/* ================================================================
   DeutscheMeister – Main CSS
   Light theme default, Dark theme via [data-theme="dark"]
   ================================================================ */

/* ── Light Theme (default) ─────────────────────────────────────── */
:root {
  --c-bg:        #f8f9fa;
  --c-surface:   #ffffff;
  --c-surface2:  #f1f3f5;
  --c-border:    #dee2e6;
  --c-text:      #212529;
  --c-text2:     #495057;
  --c-muted:     #6c757d;
  --c-primary:   #1a73e8;
  --c-primary-h: #1557b0;
  --c-primary-light: #e8f0fe;
  --c-success:   #1e8c3b;
  --c-success-bg: #d4edda;
  --c-danger:    #c0392b;
  --c-danger-bg: #fde8e6;
  --c-warning:   #b45309;
  --c-warning-bg: #fef3c7;
  --c-info:      #0277bd;
  --c-a1:        #15803d;
  --c-a1-bg:     #dcfce7;
  --c-a2:        #1d4ed8;
  --c-a2-bg:     #dbeafe;
  --c-b1:        #b45309;
  --c-b1-bg:     #fef3c7;

  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 2px 8px rgba(0,0,0,.08);
  --shadow-lg:   0 4px 20px rgba(0,0,0,.13);
  --font:        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:   'Courier New', monospace;
  --sidebar-w:   220px;
  --topbar-h:    56px;
  --transition:  0.15s ease;
}

/* ── Dark Theme ────────────────────────────────────────────────── */
[data-theme="dark"] {
  --c-bg:        #1a1d27;
  --c-surface:   #22263a;
  --c-surface2:  #2a2f47;
  --c-border:    #343a5a;
  --c-text:      #e4e6f0;
  --c-text2:     #b0b4cc;
  --c-muted:     #7a7f99;
  --c-primary:   #4d90fe;
  --c-primary-h: #6fa8ff;
  --c-primary-light: rgba(77,144,254,.18);
  --c-success:   #40c057;
  --c-success-bg: rgba(64,192,87,.15);
  --c-danger:    #fa5252;
  --c-danger-bg: rgba(250,82,82,.15);
  --c-warning:   #fd7e14;
  --c-warning-bg: rgba(253,126,20,.15);
  --c-info:      #22b8cf;
  --c-a1:        #40c057;
  --c-a1-bg:     rgba(64,192,87,.18);
  --c-a2:        #4d90fe;
  --c-a2-bg:     rgba(77,144,254,.18);
  --c-b1:        #fd7e14;
  --c-b1-bg:     rgba(253,126,20,.18);
  --shadow:      0 2px 12px rgba(0,0,0,.45);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.55);
}

/* ── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-h); }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── Mobile Input Zoom Prevention ───────────────────────────────── */
input, textarea, select, button {
  font-size: 16px !important;  /* Prevents auto-zoom on iOS when typing */
}

/* ── Layout: App Shell ─────────────────────────────────────────── */
#dm-app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
#dm-sidebar {
  width: var(--sidebar-w);
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 200;
  transition: transform var(--transition);
  overflow-y: auto;
}
#dm-sidebar.collapsed { transform: translateX(-100%); }

.sidebar-logo {
  padding: 1.2rem 1rem;
  border-bottom: 1px solid var(--c-border);
  display: flex; align-items: center; gap: .6rem;
}
.sidebar-logo .logo-icon { font-size: 1.6rem; }
.sidebar-logo .logo-text { font-weight: 700; font-size: 1rem; color: var(--c-text); letter-spacing: .5px; }
.sidebar-logo .logo-sub  { font-size: .7rem; color: var(--c-muted); }

.sidebar-nav {
  flex: 1;
  padding: .8rem 0;
}
.nav-section-label {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--c-muted);
  padding: .8rem 1rem .3rem;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .6rem 1rem;
  color: var(--c-text);
  font-size: .875rem;
  font-weight: 500;
  border-radius: 0;
  border-left: 3px solid transparent;
  transition: background var(--transition), color var(--transition);
  position: relative;
  cursor: pointer;
  border: none;
  border-left: 3px solid transparent;
  background: none;
  width: 100%;
  text-align: left;
}
.nav-item .nav-icon { font-size: 1.1rem; min-width: 1.4rem; text-align: center; }
.nav-item:hover { background: var(--c-surface2); color: var(--c-text); text-decoration: none; }
.nav-item.active {
  background: var(--c-primary-light);
  color: var(--c-primary);
  border-left: 3px solid var(--c-primary);
  border-right: none;
  font-weight: 600;
}
.nav-item .badge {
  margin-left: auto;
  font-size: .65rem;
  background: var(--c-danger);
  color: #fff;
  border-radius: 99px;
  padding: .1em .5em;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--c-border);
  font-size: .75rem;
  color: var(--c-muted);
}

/* Main content area */
#dm-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}
#dm-main.full-width { margin-left: 0; }

/* Topbar */
#dm-topbar {
  height: var(--topbar-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--c-muted);
  font-size: 1.3rem;
  padding: .2rem;
}
.topbar-title {
  font-weight: 700;
  font-size: 1rem;
  flex: 1;
}
.topbar-actions { display: flex; gap: .5rem; align-items: center; }

/* Page Content */
#dm-content {
  flex: 1;
  padding: 1.5rem;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* ── Tabs (view sections) ───────────────────────────────────────── */
.dm-view { display: none; }
.dm-view.active { display: block; }

/* ── Typography ────────────────────────────────────────────────── */
h1 { font-size: 1.6rem; font-weight: 700; margin-bottom: .5rem; }
h2 { font-size: 1.25rem; font-weight: 700; margin-bottom: .4rem; }
h3 { font-size: 1rem; font-weight: 700; margin-bottom: .3rem; }
p  { margin-bottom: .75rem; }

/* ── Cards ─────────────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.card-header {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--c-border);
}
.card-header h2, .card-header h3 { margin: 0; }
.card-icon { font-size: 1.2rem; }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: .875rem;
  font-weight: 600;
  transition: background var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.btn:disabled { opacity: .5; pointer-events: none; }
.btn-primary   { background: var(--c-primary);  color: #fff;            border-color: var(--c-primary); }
.btn-primary:hover { background: var(--c-primary-h); }
.btn-success   { background: var(--c-success);  color: #fff;            border-color: var(--c-success); }
.btn-success:hover { filter: brightness(1.1); }
.btn-danger    { background: var(--c-danger);   color: #fff;            border-color: var(--c-danger); }
.btn-danger:hover  { filter: brightness(1.1); }
.btn-outline   { background: transparent;       color: var(--c-primary); border-color: var(--c-primary); }
.btn-outline:hover { background: rgba(92,124,250,.12); }
.btn-ghost     { background: var(--c-surface2); color: var(--c-text);   border-color: var(--c-border); }
.btn-ghost:hover { background: var(--c-border); }
.btn-sm { padding: .3rem .7rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

/* ── Forms ─────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-muted);
  margin-bottom: .35rem;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.form-control {
  width: 100%;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  padding: .55rem .8rem;
  font-size: .875rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(92,124,250,.2);
}
textarea.form-control { resize: vertical; min-height: 100px; line-height: 1.6; }
select.form-control { appearance: none; }

/* ── Chips / Badges ─────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2em .6em;
  border-radius: 99px;
  font-size: .75rem;
  font-weight: 600;
}
.chip-success  { background: rgba(64,192,87,.15);  color: var(--c-success); }
.chip-danger   { background: rgba(250,82,82,.15);  color: var(--c-danger); }
.chip-info     { background: rgba(34,184,207,.15); color: var(--c-info); }
.chip-primary  { background: rgba(92,124,250,.15); color: var(--c-primary); }
.chip-warning  { background: rgba(253,126,20,.15); color: var(--c-warning); }

/* Level badges */
.badge-a1 { background: var(--c-a1-bg);  color: var(--c-a1); font-size:.7rem; font-weight:700; padding:.15em .55em; border-radius:4px; }
.badge-a2 { background: var(--c-a2-bg); color: var(--c-a2); font-size:.7rem; font-weight:700; padding:.15em .55em; border-radius:4px; }
.badge-b1 { background: var(--c-b1-bg); color: var(--c-b1); font-size:.7rem; font-weight:700; padding:.15em .55em; border-radius:4px; }

/* ── Alerts ────────────────────────────────────────────────────── */
.alert {
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .875rem;
  margin-bottom: 1rem;
}
.alert-danger  { background: rgba(250,82,82,.1);  border: 1px solid rgba(250,82,82,.3);  color: #fc8181; }
.alert-success { background: rgba(64,192,87,.1);  border: 1px solid rgba(64,192,87,.3);  color: #68d391; }
.alert-info    { background: rgba(34,184,207,.1); border: 1px solid rgba(34,184,207,.3); color: var(--c-info); }
.alert-warning { background: rgba(253,126,20,.1); border: 1px solid rgba(253,126,20,.3); color: var(--c-warning); }

/* ── Grid helpers ───────────────────────────────────────────────── */
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.flex    { display: flex; gap: .75rem; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.ml-auto { margin-left: auto; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.hidden { display: none !important; }
.text-muted { color: var(--c-muted); }
.text-sm { font-size: .8rem; }

/* ── Dashboard Stats ────────────────────────────────────────────── */
.stat-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.stat-card.stat-primary::before { background: var(--c-primary); }
.stat-card.stat-success::before { background: var(--c-success); }
.stat-card.stat-warning::before { background: var(--c-warning); }
.stat-card.stat-info::before    { background: var(--c-info); }
.stat-value { font-size: 1.8rem; font-weight: 800; line-height: 1.2; }
.stat-label { font-size: .75rem; color: var(--c-muted); margin-top: .2rem; text-transform: uppercase; letter-spacing: .5px; }
.stat-icon  { font-size: 1.8rem; position: absolute; right: 1rem; top: 50%; transform: translateY(-50%); opacity: .2; }

/* ── Forecast Panel ─────────────────────────────────────────────── */
.forecast-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.forecast-track { margin: 1rem 0; }
.forecast-track-bar {
  height: 8px;
  background: var(--c-border);
  border-radius: 99px;
  overflow: hidden;
}
.forecast-track-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-info));
  border-radius: 99px;
  transition: width .6s ease;
}
.velocity-alert {
  display: flex;
  align-items: center;
  gap: .6rem;
  background: rgba(250,82,82,.08);
  border: 1px solid rgba(250,82,82,.25);
  border-radius: var(--radius-sm);
  padding: .6rem .9rem;
  font-size: .875rem;
  color: #fc8181;
  margin-top: .75rem;
}
.on-track-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(64,192,87,.12);
  border: 1px solid rgba(64,192,87,.25);
  border-radius: var(--radius-sm);
  padding: .4rem .8rem;
  font-size: .875rem;
  color: var(--c-success);
  margin-top: .75rem;
}

/* ── 1/3 Balance ────────────────────────────────────────────────── */
.balance-ring-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 0;
}
.balance-bars { display: flex; flex-direction: column; gap: .75rem; }
.balance-bar-row { display: flex; align-items: center; gap: .75rem; }
.balance-bar-label { width: 130px; font-size: .8rem; color: var(--c-muted); text-align: right; flex-shrink: 0; }
.balance-bar-track { flex: 1; height: 10px; background: var(--c-border); border-radius: 99px; overflow: hidden; }
.balance-bar-fill  { height: 100%; border-radius: 99px; transition: width .6s ease; }
.balance-bar-fill.systematic    { background: var(--c-primary); }
.balance-bar-fill.immersion     { background: var(--c-success); }
.balance-bar-fill.active_output { background: var(--c-warning); }
.balance-bar-pct { width: 42px; font-size: .8rem; font-weight: 600; text-align: right; }
.balance-target-line {
  position: relative;
  height: 0;
  width: 33.33%;
  border-right: 2px dashed rgba(255,255,255,.2);
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   SRS WORD PRACTICE — Full Redesign
   ═══════════════════════════════════════════════════════════ */

/* ── Page header ─────────────────────────────────────────── */
.srs-page-header     { margin-bottom: 1.25rem; }
.srs-page-title-row  { display: flex; align-items: center; justify-content: space-between; margin-bottom: .75rem; flex-wrap: wrap; gap: .4rem; }
.srs-header-actions  { display: flex; gap: .4rem; }

/* ── Level filter ────────────────────────────────────────── */
.srs-level-filter { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: .5rem; }
.srs-lvl-btn {
  padding: .3rem .85rem; border-radius: 99px; border: 1.5px solid var(--c-border);
  background: var(--c-surface2); color: var(--c-text2); font-size: .8rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
}
.srs-lvl-btn:hover  { border-color: var(--c-primary); color: var(--c-primary); }
.srs-lvl-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ── Word type filter ────────────────────────────────────── */
.srs-type-filter { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: .6rem; }
.srs-type-btn {
  padding: .25rem .7rem; border-radius: 99px; border: 1.5px solid var(--c-border);
  background: var(--c-surface2); color: var(--c-text2); font-size: .75rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
}
.srs-type-btn:hover  { border-color: var(--c-primary); color: var(--c-primary); }
.srs-type-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
#srs-filter-area.hidden { display: none; }

/* ── Mode tabs ───────────────────────────────────────────── */
.srs-mode-tabs { display: flex; border-bottom: 2px solid var(--c-border); margin-bottom: .75rem; }
.srs-mode-tab {
  padding: .5rem 1.1rem; background: none; border: none; border-bottom: 2.5px solid transparent;
  color: var(--c-text2); font-size: .88rem; font-weight: 600; cursor: pointer;
  margin-bottom: -2px; transition: color var(--transition), border-color var(--transition);
  display: flex; align-items: center; gap: .35rem;
}
.srs-mode-tab:hover  { color: var(--c-primary); }
.srs-mode-tab.active { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.srs-due-badge { display: inline-block; font-size: .65rem; font-weight: 700; padding: .1rem .45rem; border-radius: 99px; background: transparent; min-width: 18px; text-align: center; }
.srs-due-badge.has-due { background: var(--c-danger); color: #fff; }

/* ── Stats row ───────────────────────────────────────────── */
.srs-stats-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.srs-stat-chip { display: inline-flex; align-items: center; gap: .3rem; padding: .25rem .75rem; border-radius: 99px; background: var(--c-surface2); border: 1px solid var(--c-border); font-size: .78rem; color: var(--c-text2); }
.srs-stat-chip span { font-weight: 700; color: var(--c-text); }

/* ── Progress ────────────────────────────────────────────── */
.srs-progress { margin-bottom: 1.1rem; }
.srs-progress-bar  { height: 7px; background: var(--c-border); border-radius: 99px; overflow: hidden; margin-bottom: .35rem; }
.srs-progress-fill { height: 100%; background: linear-gradient(90deg, var(--c-primary), var(--c-success)); transition: width .4s ease; }
.srs-progress-meta { display: flex; justify-content: space-between; font-size: .72rem; color: var(--c-muted); }

/* ── Learn wrapper ───────────────────────────────────────── */
.srs-learn-wrap { max-width: 440px; margin: 0 auto; }

/* ── 3D Flip Card ────────────────────────────────────────── */
.srs-flip-card {
  width: 100%; height: 260px; perspective: 1200px;
  cursor: pointer; margin-bottom: 1rem; -webkit-tap-highlight-color: transparent;
}
.srs-flip-inner {
  width: 100%; height: 100%; position: relative;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.4,0,.2,1);
}
.srs-flip-card.flipped .srs-flip-inner { transform: rotateY(180deg); }
.srs-flip-front, .srs-flip-back {
  position: absolute; inset: 0; backface-visibility: hidden;
  border-radius: 20px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 1.75rem 2rem; gap: .35rem;
  box-shadow: 0 8px 28px rgba(0,0,0,.11), 0 2px 6px rgba(0,0,0,.06);
  border: 1.5px solid rgba(0,0,0,.07);
}
.srs-flip-front { background: linear-gradient(145deg, var(--c-surface), var(--c-surface2)); }
.srs-flip-back  { background: var(--c-surface2); transform: rotateY(180deg); }
/* Gender tints */
.gender-der .srs-flip-front { background: linear-gradient(145deg,#e8f0fe,#ccdcfb); border-color:#93b8f8; }
.gender-die .srs-flip-front { background: linear-gradient(145deg,#fde8e8,#fac8c8); border-color:#f09494; }
.gender-das .srs-flip-front { background: linear-gradient(145deg,#e6f4ea,#c8e9cc); border-color:#8dcf92; }
[data-theme="dark"] .gender-der .srs-flip-front { background: linear-gradient(145deg,#192845,#1d3461); border-color:#3a6abf; }
[data-theme="dark"] .gender-die .srs-flip-front { background: linear-gradient(145deg,#451919,#611d1d); border-color:#bf3a3a; }
[data-theme="dark"] .gender-das .srs-flip-front { background: linear-gradient(145deg,#1a3a1c,#1e4a22); border-color:#3a8f40; }
/* Article pill */
.srs-article-pill { font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; padding: .2rem .75rem; border-radius: 99px; }
.srs-article-pill.art-der { background: rgba(26,115,232,.14); color: #1a73e8; }
.srs-article-pill.art-die { background: rgba(211,47,47,.14);  color: #d32f2f; }
.srs-article-pill.art-das { background: rgba(46,125,50,.14);  color: #2e7d32; }
/* Text */
.srs-big-word        { font-size: 2rem; font-weight: 800; color: var(--c-text); text-align: center; line-height: 1.15; }
.srs-big-translation { font-size: 1.5rem; font-weight: 700; color: var(--c-text); text-align: center; }
.srs-flip-example    { font-size: .8rem; color: var(--c-muted); font-style: italic; text-align: center; max-width: 300px; line-height: 1.5; margin-top: .2rem; }
.srs-flip-hint       { font-size: .6rem; color: var(--c-muted); letter-spacing: .07em; text-transform: uppercase; margin-top: .5rem; opacity: .65; }

/* ── Buttons ─────────────────────────────────────────────── */
.srs-reveal-wrap { text-align: center; margin-bottom: .75rem; }
.srs-reveal-btn  {
  padding: .55rem 1.8rem; border-radius: 99px; border: 2px solid var(--c-primary);
  background: transparent; color: var(--c-primary); font-size: .9rem; font-weight: 700;
  cursor: pointer; transition: background var(--transition), color var(--transition);
}
.srs-reveal-btn:hover { background: var(--c-primary); color: #fff; }
.srs-grade-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-bottom: .5rem; }
.srs-grade-btn {
  display: flex; flex-direction: column; align-items: center; gap: .25rem;
  padding: .75rem 1rem; border-radius: 14px; border: 2px solid transparent;
  font-size: .88rem; font-weight: 700; cursor: pointer;
  transition: transform .12s, box-shadow .12s, background var(--transition);
}
.srs-grade-btn:hover  { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,.15); }
.srs-grade-btn:active { transform: translateY(0); }
.srs-grade-icon { font-size: 1.35rem; }
.srs-grade-wrong { background: rgba(211,47,47,.09); color: #d32f2f; border-color: rgba(211,47,47,.3); }
.srs-grade-wrong:hover { background: #d32f2f; color: #fff; border-color: #d32f2f; }
.srs-grade-right { background: rgba(46,125,50,.09); color: #2e7d32; border-color: rgba(46,125,50,.3); }
.srs-grade-right:hover { background: #2e7d32; color: #fff; border-color: #2e7d32; }
.srs-swipe-hint  { text-align: center; font-size: .65rem; color: var(--c-muted); letter-spacing: .06em; }

/* ── Empty / complete ────────────────────────────────────── */
.srs-empty, .srs-complete { text-align: center; padding: 3.5rem 1rem; max-width: 380px; margin: 0 auto; }
.srs-empty-icon, .srs-complete-icon { font-size: 3.5rem; margin-bottom: .85rem; }
.srs-complete-stats { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; margin: 1rem 0; }

/* ── Activity burst ──────────────────────────────────────── */
.srs-burst-wrap { max-width: 540px; margin: 0 auto; }
.srs-burst-header { text-align: center; padding: 1.25rem 1rem 1rem; background: var(--c-surface2); border-radius: var(--radius); margin-bottom: 1rem; border: 1px solid var(--c-border); }
.srs-burst-header h3 { margin: .4rem 0; font-size: 1.2rem; }
.srs-burst-icon   { font-size: 2.5rem; margin-bottom: .4rem; }
.srs-burst-chips  { display: flex; flex-wrap: wrap; gap: .3rem; justify-content: center; margin-top: .65rem; }
.srs-burst-section-title { font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--c-primary); margin: 1.25rem 0 .75rem; }
.srs-fillq { margin-bottom: 1.1rem; padding: .85rem 1rem; background: var(--c-surface2); border-radius: var(--radius-sm); border: 1px solid var(--c-border); }
.srs-fill-sentence { font-size: .95rem; margin-bottom: .65rem; line-height: 1.6; }
.srs-fill-opts { display: flex; flex-wrap: wrap; gap: .4rem; }
.srs-fill-opt  { padding: .35rem .85rem; border-radius: 8px; border: 1.5px solid var(--c-border); background: var(--c-surface); font-size: .85rem; cursor: pointer; transition: background var(--transition), border-color var(--transition); }
.srs-fill-opt:hover:not(:disabled) { border-color: var(--c-primary); background: rgba(99,102,241,.07); }
.srs-fill-correct { background: rgba(46,125,50,.12) !important; border-color: #2e7d32 !important; color: #2e7d32; }
.srs-fill-wrong   { background: rgba(211,47,47,.12) !important; border-color: #d32f2f !important; color: #d32f2f; }
.srs-fill-feedback { font-size: .8rem; margin-top: .5rem; font-weight: 600; }
.srs-burst-story-card { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: 1rem 1.1rem; margin-top: .5rem; }
.srs-story-body  { line-height: 1.85; font-size: .9rem; }
.srs-story-para  { margin-bottom: .6rem; }
.srs-story-hl    { background: #fff176; color: #333; border-radius: 3px; padding: 0 2px; }
[data-theme="dark"] .srs-story-hl { background: #f9a825; color: #1a1a1a; }
.srs-burst-footer { text-align: center; padding: 1.25rem .5rem .5rem; border-top: 1px solid var(--c-border); margin-top: 1rem; }
.srs-burst-score  { font-size: 1.05rem; margin-bottom: .3rem; }

/* ── Burst progress bar ────────────────────────────────────── */
.srs-burst-progress-bar-wrap { height: 6px; background: var(--c-surface2); border-radius: 99px; margin: .5rem 0 .2rem; overflow: hidden; }
.srs-burst-progress-bar { height: 100%; background: var(--c-primary); border-radius: 99px; transition: width .4s ease; }
.srs-burst-counter { text-align: center; margin-bottom: .75rem; }

/* ── Burst question card ───────────────────────────────────── */
.srs-burst-q-card  { background: var(--c-surface); border-radius: 16px; padding: 1.4rem 1.2rem 1.2rem; box-shadow: 0 4px 20px rgba(0,0,0,.08); margin-bottom: 1rem; animation: fadeInUp .25s ease; }
.srs-burst-q-type  { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--c-muted); margin-bottom: .6rem; }
.srs-burst-q-prompt { font-size: 1.15rem; font-weight: 600; margin-bottom: 1rem; line-height: 1.4; }
.srs-burst-opts    { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem; }
.srs-burst-opt     { padding: .7rem .9rem; border-radius: 12px; border: 2px solid var(--c-border); background: var(--c-bg); cursor: pointer; font-size: .9rem; font-weight: 500; color: var(--c-text); transition: border-color .15s, background .15s; text-align: left; }
.srs-burst-opt:hover:not(:disabled) { border-color: var(--c-primary); background: var(--c-primary-light, #eff6ff); }
.srs-burst-q-feedback { margin-top: .85rem; font-size: .9rem; line-height: 1.5; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ── Edit Word Modal ─────────────────────────────────────── */
#srs-edit-modal   { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.srs-modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.45); backdrop-filter: blur(2px); }
.srs-modal-box {
  position: relative; z-index: 1; background: var(--c-surface);
  border-radius: 18px; width: 100%; max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25); overflow: hidden;
  animation: srsModalIn .22s cubic-bezier(.34,1.56,.64,1);
}
@keyframes srsModalIn { from { transform: scale(.88); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.srs-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem .75rem; border-bottom: 1px solid var(--c-border); }
.srs-modal-close  { background: none; border: none; font-size: 1.1rem; cursor: pointer; color: var(--c-muted); line-height: 1; padding: .2rem .4rem; border-radius: 6px; }
.srs-modal-close:hover { background: var(--c-surface2); }
.srs-modal-body   { padding: 1rem 1.25rem; }
.srs-modal-footer { display: flex; justify-content: flex-end; gap: .5rem; padding: .75rem 1.25rem 1rem; border-top: 1px solid var(--c-border); }


/* ── Notebook (legacy) ───────────────────────────────────── */
.notebook-layout { display: grid; grid-template-columns: 1fr 280px; gap: 1rem; align-items: start; }

/* ── Class Notebook ──────────────────────────────────────── */
.nb-entry-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: .7rem 1rem;
  margin-bottom: .75rem;
}
.nb-date-input, .nb-past-select, .nb-search-input {
  padding: .35rem .6rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: .875rem;
}
.nb-search-input { min-width: 160px; }
.nb-tabs {
  display: flex;
  gap: 2px;
  background: var(--c-surface2);
  border-radius: var(--radius);
  padding: 3px;
  margin-bottom: .75rem;
  overflow-x: auto;
}
.nb-tab {
  flex: 1;
  min-width: 80px;
  padding: .45rem .75rem;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--c-text2);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.nb-tab.active {
  background: var(--c-surface);
  color: var(--c-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.nb-tab-panel { display: block; }
.nb-tab-panel.hidden { display: none; }
.nb-section-title { font-size: .82rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--c-muted); margin-bottom: .7rem; }

/* Collapsible practice cards */
.nb-collapsible-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 14px; margin-bottom: 12px; overflow: hidden; }
.nb-collapsible-header { display: flex; align-items: center; justify-content: space-between; padding: .85rem 1.1rem; cursor: pointer; font-size: .9rem; font-weight: 700; user-select: none; transition: background .15s; }
.nb-collapsible-header:hover { background: var(--c-surface2); }
.nb-col-chevron { font-size: .75rem; color: var(--c-muted); transition: transform .25s; display: inline-block; }
.nb-collapsible-card.collapsed .nb-col-chevron { transform: rotate(-90deg); }
.nb-collapsible-body { padding: 0 1.1rem 1.1rem; }
.nb-collapsible-card.collapsed .nb-collapsible-body { display: none; }

/* Writing practice helper buttons */
.nb-helper-btns { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: .65rem; }
.nb-helper-btns .btn.active { background: var(--c-primary-light); color: var(--c-primary); border-color: var(--c-primary); }

/* Helper panels (word lookup / verb conjugation) */
.nb-helper-panel { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: 10px; padding: .75rem; margin-bottom: .75rem; }
.nb-helper-panel .form-control { margin-bottom: .5rem; }
.nb-helper-panel-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: .5rem; }
.nb-helper-close { background: none; border: none; cursor: pointer; font-size: 1.2rem; line-height: 1; color: var(--c-muted); padding: 0 .2rem; border-radius: 4px; }
.nb-helper-close:hover { color: var(--c-text); background: var(--c-border); }
.nb-word-results { display: flex; flex-direction: column; gap: .25rem; max-height: 200px; overflow-y: auto; }
.nb-word-res-item { padding: .4rem .6rem; border-radius: 7px; font-size: .87rem; line-height: 1.5; background: var(--c-surface); border: 1px solid var(--c-border); cursor: default; }

/* Topic search autocomplete */
.ts-dropdown {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  max-height: 240px;
  overflow-y: auto;
  z-index: 200;
}
.ts-item {
  padding: .45rem .7rem;
  font-size: .82rem;
  cursor: pointer;
  border-bottom: 1px solid var(--c-border);
  display: flex; align-items: center; gap: .5rem;
}
.ts-item:last-child { border: none; }
.ts-item:hover, .ts-item.ts-hl { background: var(--c-surface2); }
.ts-item.ts-hl { background: var(--c-primary-alpha); }

/* Topic chips */
.topic-chip {
  display: inline-flex; align-items: center; gap: .3rem;
  background: var(--c-primary-alpha, rgba(99,102,241,.12));
  color: var(--c-primary);
  border-radius: 99px; padding: .2rem .65rem;
  font-size: .78rem; font-weight: 700;
}
.topic-chip .tc-remove { cursor: pointer; opacity: .6; font-size: .9rem; }
.topic-chip .tc-remove:hover { opacity: 1; }

/* Grammar display */
.gram-display-card { border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1rem; margin-bottom: .75rem; }
.gram-display-card + .gram-display-card { margin-top: 0; }

/* Word list in vocab tab */
.wl-row {
  display: flex; align-items: center; gap: .6rem;
  padding: .45rem .5rem; border-bottom: 1px solid var(--c-border);
  font-size: .875rem;
}
.wl-row:last-child { border: none; }
.wl-art { font-size: .75rem; font-weight: 700; padding: .15rem .4rem; border-radius: 4px; }
.wl-art.der { background: rgba(26,115,232,.12); color: #1a73e8; }
.wl-art.die { background: rgba(211,47,47,.1); color: #d32f2f; }
.wl-art.das { background: rgba(46,125,50,.1); color: #2e7d32; }
.wl-art.none { background: var(--c-border); color: var(--c-muted); }
.wl-word { font-weight: 700; min-width: 100px; }
.wl-trans { color: var(--c-muted); flex: 1; font-size: .82rem; }
.wl-rm { background: none; border: none; color: var(--c-danger); cursor: pointer; font-size: 1rem; padding: 0 4px; opacity: .5; }
.wl-rm:hover { opacity: 1; }

/* Flashcard – modern redesign */
.wfc-card {
  width: 100%; max-width: 400px;
  height: 230px;
  perspective: 1100px;
  cursor: pointer;
  margin: 0 auto 16px;
  -webkit-tap-highlight-color: transparent;
}
.wfc-inner {
  width: 100%; height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.4,0,.2,1);
}
.wfc-card.flipped .wfc-inner { transform: rotateY(180deg); }
.wfc-front, .wfc-back {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  border-radius: 18px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 1.5rem 1.75rem;
  gap: .4rem;
  box-shadow: 0 6px 24px rgba(0,0,0,.10), 0 1px 4px rgba(0,0,0,.06);
  border: 1.5px solid rgba(0,0,0,.07);
}
/* Default (no article) front */
.wfc-front { background: linear-gradient(145deg, var(--c-surface) 0%, var(--c-surface2) 100%); }
/* Gender-tinted fronts */
.gender-der .wfc-front { background: linear-gradient(145deg,#e8f0fe 0%,#ccdcfb 100%); border-color: #93b8f8; }
.gender-die .wfc-front { background: linear-gradient(145deg,#fde8e8 0%,#fac8c8 100%); border-color: #f09494; }
.gender-das .wfc-front { background: linear-gradient(145deg,#e6f4ea 0%,#c8e9cc 100%); border-color: #8dcf92; }
[data-theme="dark"] .gender-der .wfc-front { background: linear-gradient(145deg,#192845 0%,#1d3461 100%); border-color: #3a6abf; }
[data-theme="dark"] .gender-die .wfc-front { background: linear-gradient(145deg,#451919 0%,#611d1d 100%); border-color: #bf3a3a; }
[data-theme="dark"] .gender-das .wfc-front { background: linear-gradient(145deg,#1a3a1c 0%,#1e4a22 100%); border-color: #3a8f40; }
/* Back face */
.wfc-back {
  background: var(--c-surface2);
  transform: rotateY(180deg);
  gap: .5rem;
}
/* Article badge pill */
.wfc-article-badge {
  font-size: .68rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase;
  padding: .18rem .72rem; border-radius: 99px; margin-bottom: .1rem;
}
.wfc-article-badge.art-der { background: rgba(26,115,232,.14); color: #1a73e8; }
.wfc-article-badge.art-die { background: rgba(211,47,47,.14);  color: #d32f2f; }
.wfc-article-badge.art-das { background: rgba(46,125,50,.14);  color: #2e7d32; }
/* Word & translation */
.wfc-word   { font-size: 1.8rem; font-weight: 800; color: var(--c-text); text-align: center; line-height: 1.2; }
.wfc-en     { font-size: 1.35rem; font-weight: 700; color: var(--c-text); text-align: center; }
.wfc-example { font-size: .78rem; color: var(--c-muted); font-style: italic; text-align: center; margin-top: .15rem; max-width: 280px; line-height: 1.5; }
.wfc-hint   { font-size: .6rem; color: var(--c-muted); letter-spacing: .07em; text-transform: uppercase; margin-top: .4rem; opacity: .7; }
.wfc-level-badge { font-size: .65rem; font-weight: 700; padding: .15rem .55rem; border-radius: 99px; background: var(--c-primary); color: #fff; margin-top: .35rem; opacity: .8; }
/* Navigation */
.wfc-nav   { display: flex; gap: 12px; justify-content: center; align-items: center; margin-top: 4px; }
.wfc-count { font-size: .82rem; color: var(--c-muted); min-width: 52px; text-align: center; }
.wfc-nav-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 1rem; font-weight: 700; line-height: 1;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), border-color var(--transition), transform .1s;
  box-shadow: 0 1px 4px rgba(0,0,0,.07);
}
.wfc-nav-btn:hover { background: var(--c-primary); color: #fff; border-color: var(--c-primary); transform: scale(1.08); }

/* Writing practice */
.wl-grammar-banner { background: rgba(99,102,241,.08); border-left: 3px solid var(--c-primary); padding: .55rem .85rem; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: .85rem; margin-bottom: 8px; }
.wl-words-row { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: 8px; }
.sc-chip { display: inline-block; background: var(--c-primary-alpha, rgba(99,102,241,.12)); color: var(--c-primary); border-radius: 99px; padding: .2rem .6rem; font-size: .78rem; font-weight: 700; }
.inspiration-box { font-size: .78rem; color: var(--c-muted); font-style: italic; margin-bottom: 8px; }
.nb-writing-area { width: 100%; min-height: 140px; padding: .7rem .85rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-bg); color: var(--c-text); font-size: .9rem; line-height: 1.75; resize: vertical; }
.wc-bar-wrap { height: 5px; background: var(--c-border); border-radius: 99px; overflow: hidden; margin: 6px 0; }
.wc-bar-fill { height: 100%; background: var(--c-primary); border-radius: 99px; transition: width .3s; }
.wc-label { display: flex; justify-content: space-between; font-size: .72rem; color: var(--c-muted); margin-bottom: 6px; }

/* Notes tab */
.notes-area { width: 100%; min-height: 260px; padding: .85rem 1rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-bg); color: var(--c-text); font-size: .9rem; line-height: 1.75; resize: vertical; font-family: var(--font); }
.notes-save-status { font-size: .72rem; color: var(--c-muted); margin-top: 6px; }

/* Stories tab */
.st-level-tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.st-level-btn { flex: 1; padding: .4rem .6rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: transparent; color: var(--c-text2); font-size: .82rem; font-weight: 600; cursor: pointer; }
.st-level-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.st-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: .65rem; }
.st-card { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: .85rem; cursor: pointer; transition: border-color var(--transition); }
.st-card:hover { border-color: var(--c-primary); }
.st-card-icon { font-size: 1.6rem; margin-bottom: .3rem; }
.st-card-title { font-size: .88rem; font-weight: 700; }
.st-badge { font-size: .7rem; font-weight: 700; padding: .15rem .5rem; border-radius: 99px; background: var(--c-primary); color: #fff; }
.st-reader-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--c-border); }
.st-reader-title { font-size: 1.15rem; font-weight: 800; margin-bottom: 12px; }
.st-reader-body { line-height: 1.85; margin-bottom: 14px; }
.st-quiz { background: var(--c-surface2); border-radius: var(--radius-sm); padding: 1rem; }

/* Kindle popup */
.kp-popup {
  position: fixed;
  bottom: 80px; left: 50%;
  transform: translateX(-50%);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 320px;
  z-index: 4000;
  padding: .85rem 1rem;
  font-size: .875rem;
}
.kp-header { display: flex; align-items: baseline; gap: .4rem; margin-bottom: .4rem; }
.kp-art { font-size: .8rem; font-weight: 700; padding: .1rem .4rem; border-radius: 4px; }
.kp-art.der-color { color: #1a73e8; }
.kp-art.die-color { color: #d32f2f; }
.kp-art.das-color { color: #2e7d32; }
.kp-word { font-size: 1.1rem; font-weight: 800; }
.kp-body { margin-bottom: .6rem; }
.kp-en { font-weight: 600; margin-bottom: .2rem; }
.kp-ex { font-style: italic; color: var(--c-muted); font-size: .82rem; }
.kp-notfound { color: var(--c-muted); font-size: .82rem; margin-bottom: .4rem; }
.kp-footer { display: flex; gap: 8px; justify-content: flex-end; }
.notebook-editor .textarea-wrap { position: relative; }
textarea.dm-hint {
  font-family: var(--font);
  font-size: .9rem;
  min-height: 220px;
  line-height: 1.75;
}
.dm-verb-zone {
  position: absolute;
  right: 0; bottom: 0;
  background: rgba(250,82,82,.15);
  border: 1px solid rgba(250,82,82,.4);
  border-radius: var(--radius-sm);
  font-size: .7rem;
  font-weight: 700;
  color: var(--c-danger);
  padding: .15rem .4rem;
  pointer-events: none;
}
.dm-verb-zone.hidden { display: none; }
.dm-verb-zone.active { display: block; }

.notebook-sidebar { display: flex; flex-direction: column; gap: .75rem; }
.pinned-section   { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius); padding: .9rem; }
.pinned-section h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; color: var(--c-muted); margin-bottom: .6rem; }
.pinned-item {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  padding: .45rem .5rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  margin-bottom: .4rem;
  font-size: .8rem;
}
.pinned-item .pin-word  { font-weight: 700; color: var(--c-text); }
.pinned-item .pin-trans { color: var(--c-muted); }
.pinned-item .pin-remove { margin-left: auto; color: var(--c-danger); background: none; border: none; font-size: .9rem; padding: 0; }

.nb-list-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  margin-bottom: .5rem;
  cursor: pointer;
  transition: background var(--transition);
}
.nb-list-item:hover { background: var(--c-surface2); }
.nb-list-date { font-size: .75rem; color: var(--c-muted); min-width: 5.5rem; }
.nb-list-title { font-weight: 600; flex: 1; }
.nb-list-excerpt { font-size: .8rem; color: var(--c-muted); }

/* ── Hinting Tooltip ────────────────────────────────────────────── */
#dm-hint-tooltip {
  position: absolute;
  z-index: 9999;
  background: var(--c-surface);
  border: 1px solid var(--c-primary);
  border-radius: var(--radius-sm);
  padding: .5rem .75rem;
  font-size: .8rem;
  line-height: 1.6;
  box-shadow: var(--shadow-lg);
  max-width: 280px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
}
#dm-hint-tooltip.visible { opacity: 1; }
#dm-hint-tooltip.hidden  { display: none; }

/* ── Exam Module ────────────────────────────────────────────────── */
.exam-tabs { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.exam-tab-btn {
  padding: .4rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-surface2);
  color: var(--c-muted);
  font-size: .8rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}
.exam-tab-btn:hover { background: var(--c-border); color: var(--c-text); }
.exam-tab-btn.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

.exam-template  { margin-bottom: 1.25rem; }
.exam-prompt {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .85rem;
  line-height: 1.7;
  margin-bottom: .75rem;
  white-space: pre-line;
}
.word-counter {
  font-size: .75rem;
  color: var(--c-muted);
  text-align: right;
  margin-top: .25rem;
}
.word-counter .wc-num { font-weight: 700; color: var(--c-text); }
.word-counter .wc-ok  { color: var(--c-success); }
.word-counter .wc-low { color: var(--c-warning); }

.checklist { list-style: none; }
.checklist li {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .4rem 0;
  font-size: .875rem;
  border-bottom: 1px solid var(--c-border);
}
.checklist li:last-child { border: none; }
.checklist li input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--c-primary); cursor: pointer; }
.checklist li label { cursor: pointer; flex: 1; }

/* ── AI Practice (Voice Conversation) ─────────────────────────── */

/* Responsive 3-tier grid: Mobile (1 col) | Tablet (2 col) | Desktop (3 col) */
.ai-practice-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .ai-practice-grid {
    grid-template-columns: 1fr 2fr;
  }
}
@media (min-width: 1200px) {
  .ai-practice-grid {
    grid-template-columns: 1fr 2fr 1fr;
  }
}

.ai-setup-panel,
.ai-chat-panel,
.ai-metrics-panel {
  display: flex;
  flex-direction: column;
}

/* Hide metrics panel on mobile */
@media (max-width: 767px) {
  .ai-metrics-panel { display: none !important; }
}

/* Chat messages container */
.ai-chat-messages {
  flex: 1;
  min-height: 240px;
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--c-surface2);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

/* Individual message bubbles */
.ai-msg {
  display: flex;
  flex-direction: column;
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 14px;
  line-height: 1.5;
  font-size: 0.9rem;
}
.ai-msg.bot {
  align-self: flex-start;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  color: var(--c-text);
}
.ai-msg.user {
  align-self: flex-end;
  background: var(--c-primary);
  color: #fff;
  border: none;
}

/* Feedback correction box */
.ai-feedback {
  align-self: flex-start;
  max-width: 85%;
  background: var(--c-warning-bg);
  color: var(--c-warning);
  border-left: 3px solid var(--c-warning);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  font-size: 0.85rem;
  margin-top: 0.35rem;
  line-height: 1.4;
}

/* Microphone button (primary input) */
.ai-mic-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--c-danger);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.ai-mic-btn:active {
  transform: scale(0.95);
}
.ai-mic-btn.listening {
  animation: ai-pulse 1.4s infinite;
}

@keyframes ai-pulse {
  0% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0.7); }
  70% { box-shadow: 0 0 0 18px rgba(192, 57, 43, 0); }
  100% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0); }
}

/* Input section: mic button + textarea + buttons */
.ai-input-section {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  flex-wrap: wrap;
}
.ai-input-text {
  flex: 1;
  min-width: 180px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.95rem;
  resize: none;
}

/* Grammar topics list */
.ai-g-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem;
  background: var(--c-surface2);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.ai-g-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.ai-g-item input { margin-top: 0.2rem; }

/* Pill buttons (level, language) */
.ai-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.ai-pill {
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 1px solid var(--c-border);
  background: var(--c-surface2);
  color: var(--c-text);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s;
}
.ai-pill:hover {
  border-color: var(--c-primary);
}
.ai-pill.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* Metrics display (right panel on desktop) */
.ai-metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-border);
  font-size: 0.9rem;
}
.ai-metric-row:last-child { border-bottom: none; }
.ai-metric-label {
  color: var(--c-text2);
  font-weight: 500;
}
.ai-metric-value {
  font-weight: 700;
  color: var(--c-primary);
  font-size: 1.1rem;
}

/* Mobile: chat/metrics hidden until session starts */
@media (max-width: 767px) {
  .ai-chat-panel.hidden,
  .ai-metrics-panel.hidden { display: none; }
  .ai-setup-panel { min-height: auto; }
}

/* ── Syllabus / Progress ── NEW CARD DESIGN ──────────────────── */
.syl-level-group   { margin-bottom: 2.5rem; }
.syl-level-header  { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; padding-bottom: .85rem; border-bottom: 2px solid var(--c-border); flex-wrap: wrap; }
.syl-lh-left       { display: flex; align-items: flex-start; gap: .75rem; }
.syl-lvl-badge     { font-size: .8rem; font-weight: 800; padding: .4rem .75rem; border-radius: 8px; white-space: nowrap; margin-top: .1rem; }
.syl-lvl-title     { font-size: 1.2rem; font-weight: 700; margin: 0 0 .15rem; }
.syl-complete-crown{ margin-left: .35rem; }
.syl-lvl-desc      { margin: 0; }
.syl-lh-right      { display: flex; flex-direction: column; align-items: flex-end; gap: .4rem; }
.syl-prog-wrap     { display: flex; align-items: center; gap: .5rem; }
.syl-prog-bar      { width: 120px; height: 8px; background: var(--c-surface2); border-radius: 99px; overflow: hidden; }
.syl-prog-fill     { height: 100%; background: var(--c-primary); border-radius: 99px; transition: width .4s; }
.syl-prog-label    { font-size: .8rem; color: var(--c-muted); white-space: nowrap; }
.syl-now-chip      { font-size: .75rem; padding: .2rem .65rem; background: var(--c-primary); color: #fff; border-radius: 99px; }

.syl-chapter-grid  { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .75rem; }

.syl-ch-card       { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 14px; padding: 1rem; transition: transform .15s, box-shadow .15s; display: flex; flex-direction: column; gap: .45rem; }
.syl-ch-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.08); }
.syl-ch-card.locked   { opacity: .45; }
.syl-ch-card.active   { border-color: var(--c-primary); background: rgba(92,124,250,.06); box-shadow: 0 0 0 2px rgba(92,124,250,.2); }
.syl-ch-card.completed{ border-color: var(--c-success); background: rgba(64,192,87,.05); }

.syl-ch-head       { display: flex; justify-content: space-between; align-items: center; }
.syl-ch-num        { font-size: .65rem; font-weight: 700; color: var(--c-muted); background: var(--c-surface2); padding: .2rem .5rem; border-radius: 6px; }
.syl-ch-icon       { font-size: .9rem; }
.syl-ch-title      { font-size: .9rem; font-weight: 700; line-height: 1.3; }
.syl-ch-grammar    { margin-top: .1rem; }
.syl-grammar-pill  { font-size: .7rem; color: var(--c-muted); background: var(--c-surface2); padding: .15rem .5rem; border-radius: 6px; display: inline-block; }
.syl-ch-cta        { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .25rem; }
.syl-ch-done-row   { margin-top: .25rem; }
.syl-ch-done-row .btn { font-size: .72rem; }

/* Chapter cards — enhancements */
.syl-ch-clickable  { cursor: pointer; }
.syl-ch-emoji-title{ display: flex; align-items: flex-start; gap: .4rem; margin: .1rem 0; }
.syl-ch-emoji      { font-size: 1.15rem; line-height: 1.2; flex-shrink: 0; }
.syl-ch-hint       { font-size: .65rem; color: var(--c-muted); margin-top: auto; padding-top: .3rem; opacity: .7; }
.syl-book-mini     { font-size: .6rem; font-weight: 700; background: var(--c-primary); color: #fff; padding: .1rem .35rem; border-radius: 4px; margin-left: .2rem; vertical-align: middle; }

/* ── Syllabus view toggle ──────────────────────────────────────── */
.syl-view-toggle   { display: flex; gap: .5rem; margin-bottom: 1.25rem; }

/* ── Reference Table ───────────────────────────────────────────── */
.syl-ref-level-block { margin-bottom: 2.5rem; }
.syl-ref-level-header {
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  margin-bottom: 1rem; padding-bottom: .75rem; border-bottom: 2px solid var(--c-border);
}
.syl-ref-level-name { font-size: 1.1rem; font-weight: 700; }

.syl-ref-block {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: 14px; margin-bottom: 1.5rem; overflow: hidden;
  transition: box-shadow .15s;
}
.syl-ref-block:hover { box-shadow: 0 4px 18px rgba(0,0,0,.08); }
.syl-ref-block.completed { border-color: var(--c-success); }
.syl-ref-block.active    { border-color: var(--c-primary); box-shadow: 0 0 0 2px rgba(92,124,250,.18); }
.syl-ref-block.locked    { opacity: .55; }

.syl-ref-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 1rem; padding: 1rem 1.25rem .75rem;
  background: var(--c-surface2); border-bottom: 1px solid var(--c-border);
  flex-wrap: wrap;
}
.syl-ref-header-left { display: flex; align-items: flex-start; gap: .85rem; }
.syl-ref-emoji  { font-size: 2.2rem; line-height: 1; flex-shrink: 0; margin-top: .1rem; }
.syl-ref-meta   { display: flex; align-items: center; flex-wrap: wrap; gap: .4rem; margin-bottom: .3rem; }
.syl-ref-chnum  { font-size: .75rem; font-weight: 700; color: var(--c-muted); }
.syl-ref-page   { font-size: .72rem; color: var(--c-muted); }
.syl-ref-title  { font-size: 1.2rem; font-weight: 800; line-height: 1.25; }

.syl-ref-table {
  width: 100%; border-collapse: collapse; font-size: .85rem;
}
.syl-ref-table th, .syl-ref-table td {
  padding: .65rem 1.25rem; border-bottom: 1px solid var(--c-border);
  vertical-align: top; text-align: left;
}
.syl-ref-table tr:last-child th,
.syl-ref-table tr:last-child td { border-bottom: none; }
.syl-ref-table th {
  width: 160px; min-width: 130px; font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .04em;
  color: var(--c-muted); background: var(--c-surface2);
  white-space: nowrap;
}
.syl-ref-detail-row th { background: rgba(92,124,250,.06); color: var(--c-primary); }
.syl-ref-detail-row td { background: rgba(92,124,250,.03); }

.syl-ref-ul {
  margin: 0; padding-left: 1.15rem; line-height: 1.6;
}
.syl-ref-ul li { margin-bottom: .1rem; }
.syl-ref-gram-ul li { font-family: var(--font-mono, 'Courier New', monospace); font-size: .8rem; line-height: 1.65; }
.syl-ref-tags  { display: flex; flex-wrap: wrap; gap: .3rem; align-items: center; }

.syl-plattform-divider {
  display: flex; align-items: center; gap: .75rem; margin: 1.25rem 0;
}
.syl-plattform-divider::before, .syl-plattform-divider::after {
  content: ''; flex: 1; height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-primary), transparent);
  opacity: .3;
}
.syl-plattform-divider span {
  font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--c-primary); white-space: nowrap;
  background: var(--c-surface); padding: .2rem .75rem;
  border: 1px solid var(--c-primary); border-radius: 99px; opacity: .8;
}

@media (max-width: 600px) {
  .syl-ref-table th { width: 90px; min-width: 80px; font-size: .65rem; padding: .5rem .75rem; }
  .syl-ref-table td { padding: .5rem .75rem; }
  .syl-ref-header    { padding: .75rem; }
  .syl-ref-title     { font-size: 1rem; }
}


/* ── Chapter detail modal ──────────────────────────────────────── */
.syl-detail-overlay {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(0,0,0,.55); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.syl-detail-overlay.hidden { display: none; }
.syl-detail-box {
  background: var(--c-surface); border-radius: 18px;
  width: 100%; max-width: 780px; max-height: 88vh;
  overflow-y: auto; padding: 1.75rem 1.75rem 1.5rem;
  position: relative; box-shadow: 0 24px 60px rgba(0,0,0,.25);
}
.syl-modal-close-btn {
  position: absolute; top: 1rem; right: 1rem;
  font-size: 1.4rem; z-index: 1;
}
.syl-detail-hero   { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1.25rem; }
.syl-detail-emoji  { font-size: 2.8rem; line-height: 1; flex-shrink: 0; }
.syl-detail-meta   { display: flex; align-items: center; flex-wrap: wrap; gap: .4rem; margin-bottom: .3rem; }
.syl-detail-title  { font-size: 1.35rem; font-weight: 800; margin: 0; line-height: 1.25; }
.syl-detail-page   { font-size: .75rem; color: var(--c-muted); }
.syl-detail-status { font-size: .7rem; font-weight: 700; padding: .15rem .55rem; border-radius: 99px; }
.syl-detail-status.completed { background: rgba(64,192,87,.15); color: #2a9d3a; }
.syl-detail-status.active    { background: rgba(92,124,250,.15); color: var(--c-primary); }
.syl-detail-status.locked    { background: var(--c-surface2); color: var(--c-muted); }
.syl-book-chip     { font-size: .7rem; font-weight: 700; background: var(--c-primary); color: #fff; padding: .15rem .55rem; border-radius: 99px; }

.syl-detail-grid   { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .syl-detail-grid { grid-template-columns: 1fr; } }

.syl-detail-section       { background: var(--c-surface2); border-radius: 12px; padding: .9rem 1rem; }
.syl-detail-section-title { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); margin-bottom: .5rem; }
.syl-detail-list   { margin: 0; padding-left: 1.1rem; }
.syl-detail-list li { font-size: .82rem; line-height: 1.55; margin-bottom: .15rem; }
.syl-gram-detail li { font-size: .79rem; line-height: 1.6; font-family: var(--font-mono, monospace); color: var(--c-text); }

.syl-tag-row       { display: flex; flex-wrap: wrap; gap: .35rem; }
.syl-tag-pill      { font-size: .72rem; background: var(--c-surface); border: 1px solid var(--c-border); padding: .2rem .55rem; border-radius: 8px; }
.gram-pill         { border-color: var(--c-primary); color: var(--c-primary); background: rgba(92,124,250,.07); }

.syl-detail-footer-row {
  display: flex; flex-wrap: wrap; gap: 1rem;
  background: var(--c-surface2); border-radius: 12px;
  padding: .9rem 1rem; margin-top: 1rem;
}
.syl-detail-footer-row > div { flex: 1 1 160px; }
.syl-aus-badge     { font-size: .8rem; font-weight: 600; background: var(--c-surface); border: 1px solid var(--c-border); padding: .25rem .65rem; border-radius: 8px; display: inline-block; }
.syl-film-pill     { font-size: .75rem; display: inline-block; background: var(--c-surface); border: 1px solid var(--c-border); padding: .2rem .55rem; border-radius: 8px; margin: .15rem .1rem 0 0; }

.syl-detail-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--c-border); }

/* old syllabus class aliases — kept for reference */
.chapter-num, .chapter-title { font-size: inherit; }



/* ── Vocabulary list ───────────────────────────────────────────── */
.vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .75rem;
}
.vocab-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  font-size: .875rem;
}
.vocab-card .vc-word   { font-size: 1.05rem; font-weight: 700; margin-bottom: .2rem; }
.vocab-card .vc-article{ color: var(--c-muted); font-size: .8rem; }
.vocab-card .vc-trans  { color: var(--c-info); margin-top: .2rem; }
.vocab-card .vc-example{ font-size: .78rem; color: var(--c-muted); font-style: italic; margin-top: .3rem; }
.vocab-card .vc-actions{ display: flex; gap: .3rem; margin-top: .6rem; }

/* ── Word Table (Goethe Browser) ─────────────────────────────── */
.word-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.word-table th { background: var(--c-surface2); padding: .55rem .75rem; text-align: left; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); border-bottom: 2px solid var(--c-border); white-space: nowrap; }
.word-table td { padding: .5rem .75rem; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.word-table tr:hover td { background: var(--c-surface2); }
.wt-num { font-size: .72rem; color: var(--c-muted); width: 42px; }
.wt-example { font-style: italic; color: var(--c-muted); font-size: .8rem; max-width: 260px; }
.art-der { color: #1a73e8; }
.art-die { color: #d32f2f; }
.art-das { color: #2e7d32; }

/* ── Vocab Edit Modal ─────────────────────────────────────────── */
.vocab-edit-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  z-index: 9900; display: flex; align-items: center; justify-content: center;
}
.vocab-edit-modal.hidden { display: none; }
.vocab-edit-box {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 1.25rem 1.5rem;
  width: min(520px, 95vw); box-shadow: 0 8px 32px rgba(0,0,0,.22);
  max-height: 90vh; overflow-y: auto;
}
.vocab-edit-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1rem; font-size: 1rem;
}

/* ── Goethe Word Search (Pinning UI) ──────────────────────────── */
.goethe-search-results {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  max-height: 260px;
  overflow-y: auto;
  margin-top: .25rem;
}
.goethe-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .45rem .7rem;
  font-size: .8rem;
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition: background var(--transition);
}
.goethe-result-item:hover { background: var(--c-surface2); }
.goethe-result-item:last-child { border: none; }

/* ── Mobile Bottom Navigation ───────────────────────────────────── */
#dm-bottom-nav { display: none; }

/* ── Responsive: Mobile ─────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar-w: 280px; }

  /* Sidebar: slides in from left */
  #dm-sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  #dm-sidebar.open { transform: translateX(0); }

  #dm-main { margin-left: 0; }
  .topbar-toggle { display: block; }

  /* Content: bottom padding so bottom nav doesn't overlap */
  #dm-content { padding: 1rem .85rem 5rem; }

  /* Grids: 2-col for stat cards, 1-col for form rows */
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }

  /* Stat cards */
  .stat-card { padding: .85rem; }
  .stat-value { font-size: 1.35rem; }
  .stat-icon  { font-size: 1.3rem; }

  /* Multi-column layouts → single column */
  .notebook-layout { grid-template-columns: 1fr; }

  /* SRS */
  .srs-word { font-size: 1.7rem; }
  .srs-big-word { font-size: 1.9rem; }
  .srs-flip-card { height: 220px; }
  .srs-mode-tabs { flex-wrap: wrap; gap: .25rem; }

  /* Balance */
  .balance-bar-label { width: 80px; font-size: .7rem; }

  /* Grammar */
  .chapter-grammar { display: none; }

  /* Tables: horizontal scroll */
  .dm-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .dm-table { min-width: 420px; }

  /* Headings */
  h1 { font-size: 1.3rem; }
  h2 { font-size: 1.1rem; }

  /* Cards: slightly tighter */
  .card { padding: .85rem 1rem; }

  /* Tabs: scrollable row */
  .nb-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .nb-tab  { flex-shrink: 0; }

  /* Topbar: hide username chip to save space */
  .topbar-user { display: none; }

  /* Bottom Navigation Bar */
  #dm-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 60px;
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    z-index: 150;
    box-shadow: 0 -2px 12px rgba(0,0,0,.08);
  }
  .dm-bnav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: none;
    border: none;
    color: var(--c-muted);
    padding: .35rem .2rem;
    position: relative;
    cursor: pointer;
    transition: color var(--transition);
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
  }
  .dm-bnav-item:active { background: var(--c-surface2); }
  .dm-bnav-item.active  { color: var(--c-primary); }
  .dm-bnav-icon  { font-size: 1.25rem; line-height: 1; }
  .dm-bnav-label { font-size: .6rem; font-weight: 600; letter-spacing: .2px; }
  .dm-bnav-badge {
    position: absolute;
    top: .3rem; right: calc(50% - 1rem);
    background: var(--c-danger);
    color: #fff;
    border-radius: 99px;
    font-size: .55rem;
    font-weight: 700;
    padding: .05rem .3rem;
    min-width: 14px;
    text-align: center;
    line-height: 1.4;
  }
}

@media (max-width: 480px) {
  #dm-content { padding: .85rem .65rem 5rem; }

  /* Stat cards: keep 2×2 */
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: .6rem; }
  .stat-value { font-size: 1.2rem; }

  /* Exam tabs */
  .exam-tabs { gap: .3rem; }
  .exam-tab-btn { padding: .35rem .65rem; font-size: .75rem; }

  /* SRS */
  .srs-grade-wrap { grid-template-columns: 1fr; }
  .srs-level-filter { gap: .25rem; }
  .srs-type-filter  { gap: .25rem; }
  .srs-lvl-btn  { font-size: .73rem; padding: .25rem .6rem; }
  .srs-type-btn { font-size: .68rem; padding: .2rem .5rem; }
  .srs-flip-card { height: 200px; }
  .srs-big-word { font-size: 1.7rem; }

  /* Auth box */
  .auth-box { padding: 1.5rem 1.25rem 2rem; }
}

/* ── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-muted); }

/* ── Animations ─────────────────────────────────────────────────── */
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.dm-view.active { animation: fadeIn .2s ease; }

/* ── Sidebar Overlay (mobile) ───────────────────────────────────── */
#dm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 190;
}
#dm-overlay.active { display: block; }

/* ── Loading spinner ─────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-center { display: flex; justify-content: center; padding: 2rem; }

/* ── Table ──────────────────────────────────────────────────────── */
.dm-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.dm-table th {
  text-align: left;
  padding: .5rem .75rem;
  background: var(--c-surface2);
  color: var(--c-muted);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 1px solid var(--c-border);
}
.dm-table td {
  padding: .55rem .75rem;
  border-bottom: 1px solid var(--c-border);
}
.dm-table tr:hover td { background: var(--c-surface2); }
.dm-table tr:last-child td { border: none; }

/* ── Theme Toggle Button ────────────────────────────────────────── */
.theme-toggle-btn {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-muted);
  padding: .3rem .55rem;
  font-size: 1rem;
  line-height: 1;
  transition: background var(--transition), color var(--transition);
}
.theme-toggle-btn:hover { background: var(--c-border); color: var(--c-text); }

/* ── Topbar username chip ───────────────────────────────────────── */
.topbar-user {
  font-size: .8rem;
  color: var(--c-muted);
  padding: .2rem .5rem;
  border-radius: var(--radius-sm);
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ══════════════════════════════════════════════════════════════════
   AUTH OVERLAY
══════════════════════════════════════════════════════════════════ */
#dm-auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.auth-box {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem 2.5rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0,0,0,.15);
}
.auth-logo {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: .5rem;
}
.auth-title {
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  margin: 0 0 .25rem;
  color: var(--c-primary);
}
.auth-sub {
  text-align: center;
  color: var(--c-muted);
  font-size: .875rem;
  margin: 0 0 1.5rem;
}
.auth-tabs {
  display: flex;
  gap: .5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--c-border);
}
.auth-tab {
  flex: 1;
  padding: .5rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--c-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.auth-tab:hover  { color: var(--c-text); }
.auth-tab.active { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.auth-error {
  background: rgba(252,129,74,.12);
  border: 1px solid rgba(252,129,74,.35);
  border-radius: var(--radius-sm);
  color: var(--c-danger);
  font-size: .85rem;
  padding: .5rem .75rem;
  margin-bottom: .75rem;
}
.form-hint {
  display: block;
  font-size: .76rem;
  color: var(--c-muted);
  margin-top: .2rem;
}
.btn-block { width: 100%; margin-top: .25rem; }

/* Dark-mode alert colour overrides (light theme uses darker text) */
[data-theme="dark"] .alert-danger  { color: #fc8181; }
[data-theme="dark"] .alert-success { color: #68d391; }
[data-theme="dark"] .alert-info    { color: var(--c-info); }
[data-theme="dark"] .alert-warning { color: var(--c-warning); }

/* ── Grammar View ───────────────────────────────────────────────── */
.grammar-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1rem;
  align-items: start;
}
.grammar-list { border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; }
.grammar-list-item {
  display: flex;
  align-items: center;
  padding: .6rem .85rem;
  font-size: .875rem;
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition: background var(--transition);
}
.grammar-list-item:last-child { border-bottom: none; }
.grammar-list-item:hover { background: var(--c-surface2); }
.grammar-list-item.active { background: rgba(92,124,250,.13); color: var(--c-primary); font-weight: 600; }

.grammar-detail { min-height: 200px; }
.grammar-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.grammar-card-header { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; padding-bottom: .75rem; border-bottom: 1px solid var(--c-border); }
.grammar-rule { line-height: 1.75; margin-bottom: 1rem; color: var(--c-text); }

/* ═══════════════════════════════════════════════════════════════
   SENTENCE BUILDER
   ═══════════════════════════════════════════════════════════════ */
.sb-page-header  { margin-bottom: 1.25rem; }
.sb-section-label{ font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--c-muted); margin-bottom: .6rem; }

/* Clause tabs */
.sb-clause-tabs  { display: flex; gap: .75rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.sb-clause-btn   { display: flex; align-items: center; gap: .75rem; padding: .85rem 1.1rem; border-radius: 14px; border: 2px solid var(--c-border); background: var(--c-surface); cursor: pointer; flex: 1; min-width: 240px; text-align: left; transition: border-color .15s, background .15s; }
.sb-clause-btn:hover { border-color: var(--c-primary); }
.sb-clause-btn.active { border-color: var(--c-primary); background: rgba(92,124,250,.07); box-shadow: 0 0 0 3px rgba(92,124,250,.15); }
.sb-clause-btn strong { display: block; font-size: .95rem; }
.sb-clause-btn small  { font-size: .75rem; color: var(--c-muted); }
.sb-clause-icon { font-size: 1.4rem; }

/* Conjunction picker */
.sb-conj-section  { margin-bottom: 1.25rem; }
.sb-conj-grid     { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: .75rem; }
.sb-conj-chip     { padding: .4rem .75rem; border-radius: 10px; border: 1.5px solid var(--c-border); background: var(--c-surface); cursor: pointer; font-size: .85rem; font-weight: 600; display: flex; flex-direction: column; align-items: center; gap: .05rem; transition: border-color .12s, background .12s; }
.sb-conj-chip:hover { border-color: var(--c-primary); background: rgba(92,124,250,.06); }
.sb-conj-chip.active { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }
.sb-conj-chip.active .sb-conj-en { color: rgba(255,255,255,.75); }
.sb-conj-en       { font-size: .6rem; font-weight: 400; color: var(--c-muted); }
.sb-conj-info     { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; padding: .75rem 1rem; background: var(--c-surface2); border-radius: 10px; font-size: .875rem; margin-top: .3rem; }
.sb-conj-tag      { font-weight: 800; font-size: 1rem; color: var(--c-primary); }
.sb-conj-en-big   { font-weight: 600; }
.sb-conj-tip      { font-style: italic; flex: 1; }
.sb-conj-example  { width: 100%; padding-top: .4rem; border-top: 1px solid var(--c-border); margin-top: .25rem; line-height: 1.6; }

/* Word-order diagram */
.sb-word-order-diagram { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 14px; padding: 1rem 1.25rem; margin-bottom: 1.25rem; }
.sb-wo-title  { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--c-muted); margin-bottom: .75rem; display: flex; align-items: center; gap: .5rem; }
.sb-wo-slots  { display: flex; align-items: stretch; gap: .3rem; flex-wrap: wrap; }
.sb-wo-slot   { display: flex; flex-direction: column; align-items: center; border-radius: 10px; padding: .45rem .7rem; min-width: 70px; text-align: center; border: 2px solid var(--c-border); }
.sb-wo-slot-label { font-size: .6rem; font-weight: 700; text-transform: uppercase; color: var(--c-muted); margin-bottom: .2rem; }
.sb-wo-slot-ex    { font-size: .82rem; font-style: italic; }
.sb-wo-subj  { background: rgba(92,124,250,.1); border-color: rgba(92,124,250,.3); }
.sb-wo-verb  { background: rgba(250,82,82,.1);  border-color: rgba(250,82,82,.5); }
.sb-wo-dativ { background: rgba(64,192,87,.1);  border-color: rgba(64,192,87,.3); }
.sb-wo-akk   { background: rgba(250,176,5,.1);  border-color: rgba(250,176,5,.3); }
.sb-wo-adv   { background: var(--c-surface2);   border-color: var(--c-border); }
.sb-wo-inf   { background: rgba(168,85,247,.1); border-color: rgba(168,85,247,.3); }
.sb-wo-article { background: var(--c-surface2); border-color: var(--c-border); color: var(--c-muted); }
.sb-wo-conj  { background: rgba(92,124,250,.15);border-color: var(--c-primary); }
.sb-wo-verb-end { border-color: rgba(250,82,82,.8); box-shadow: 0 0 0 2px rgba(250,82,82,.2); }
.sb-wo-arrow  { color: var(--c-muted); font-size: .9rem; display: flex; align-items: center; }

/* Live diagram slot states */
.sb-wo-dyn-slot { position: relative; transition: border-color .2s, background .2s; }
.sb-wo-slot-word { font-size: .9rem; font-weight: 700; }
.sb-wo-slot-ok    { border-color: #16a34a !important; background: rgba(22,163,74,.1) !important; }
.sb-wo-slot-error { border-color: #dc2626 !important; background: rgba(220,38,38,.1) !important; }
.sb-wo-slot-warn  { border-color: #d97706 !important; background: rgba(217,119,6,.1)  !important; }
.sb-wo-chk        { font-size: .7rem; color: #16a34a; font-weight: 900; margin-bottom: .1rem; line-height: 1; }
.sb-wo-x          { font-size: .7rem; color: #dc2626; font-weight: 900; margin-bottom: .1rem; line-height: 1; }
.sb-wo-warn-icon  { font-size: .65rem; margin-bottom: .1rem; line-height: 1; }
.sb-wo-live-badge { font-size: .58rem; background: var(--c-primary); color: #fff; border-radius: 4px; padding: .1em .4em; letter-spacing: .04em; vertical-align: middle; text-transform: uppercase; font-weight: 800; }

/* Rule messages below the slots */
.sb-wo-rules { margin-top: .85rem; display: flex; flex-direction: column; gap: .4rem; }
.sb-wo-rule   { display: flex; align-items: flex-start; gap: .5rem; font-size: .82rem; line-height: 1.5; padding: .45rem .75rem; border-radius: 8px; }
.sb-wo-rule-ok    { background: rgba(22,163,74,.08);  border-left: 3px solid #16a34a; color: var(--c-text); }
.sb-wo-rule-error { background: rgba(220,38,38,.08);  border-left: 3px solid #dc2626; color: var(--c-text); }
.sb-wo-rule-warn  { background: rgba(217,119,6,.08);  border-left: 3px solid #d97706; color: var(--c-text); }
.sb-wo-rule-info  { background: var(--c-surface2);    border-left: 3px solid var(--c-border); color: var(--c-muted); }

/* Writing area */
.sb-write-section { margin-bottom: 1.25rem; }
.sb-write-header  { display: flex; align-items: center; justify-content: space-between; margin-bottom: .5rem; }
.sb-textarea-outer { position: relative; }
.sb-textarea      { font-size: 1rem; min-height: 80px; line-height: 1.7; resize: vertical; }
.sb-neben-mode .sb-textarea { border-color: rgba(250,82,82,.5); box-shadow: 0 0 0 2px rgba(250,82,82,.1); }
.sb-verb-end-zone { position: absolute; right: .5rem; top: .5rem; background: rgba(250,82,82,.12); border: 1.5px dashed rgba(250,82,82,.7); border-radius: 8px; padding: .3rem .7rem; pointer-events: none; animation: sbPulse 2s infinite; }
.sb-vez-label     { font-size: .7rem; font-weight: 700; color: var(--c-danger); text-transform: uppercase; letter-spacing: .05em; }
@keyframes sbPulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }
.sb-hint-strip    { font-size: .78rem; color: var(--c-muted); padding: .3rem .5rem; margin-top: .35rem; }

/* Analysis panel */
.sb-analysis  { margin-bottom: 1.25rem; display: flex; flex-direction: column; gap: .5rem; }
.sb-hint-item { display: flex; align-items: flex-start; gap: .6rem; padding: .65rem .85rem; border-radius: 10px; font-size: .87rem; line-height: 1.5; }
.sb-hint-ok   { background: rgba(64,192,87,.1); border: 1px solid rgba(64,192,87,.3); }
.sb-hint-warn { background: rgba(250,176,5,.1); border: 1px solid rgba(250,176,5,.35); }
.sb-hint-info { background: rgba(92,124,250,.08); border: 1px solid rgba(92,124,250,.2); }
.sb-hint-icon { font-size: 1rem; margin-top: .05rem; flex-shrink: 0; }

/* Lower two-column grid */
.sb-lower-grid    { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: .25rem; }
@media (max-width: 700px) { .sb-lower-grid { grid-template-columns: 1fr; } }

/* Verb lookup */
.sb-verb-results  { max-height: 220px; overflow-y: auto; border: 1px solid var(--c-border); border-radius: 10px; margin-top: .5rem; }
.sb-verb-res-item { display: flex; align-items: center; gap: .5rem; padding: .55rem .75rem; cursor: pointer; border-bottom: 1px solid var(--c-border); transition: background .1s; }
.sb-verb-res-item:last-child { border-bottom: none; }
.sb-verb-res-item:hover { background: var(--c-surface2); }
.sb-verb-inf  { font-weight: 600; font-size: .9rem; }
.sb-verb-en   { font-size: .8rem; flex: 1; }
.sb-verb-lvl  { font-size: .65rem; }
.sb-verb-card { margin-top: .75rem; background: var(--c-surface2); border-radius: 12px; padding: .85rem 1rem; }
.sb-vc-header { display: flex; align-items: center; gap: .5rem; margin-bottom: .6rem; flex-wrap: wrap; }
.sb-vc-inf    { font-size: 1.1rem; font-weight: 700; }
.sb-vc-en     { font-size: .85rem; flex: 1; }
.sb-vc-rows   { display: flex; flex-direction: column; gap: .35rem; }

/* ── Nico's Weg Video Section ─────────────────────────────────── */
.nw-section {
  margin-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  padding-top: 1.25rem;
}
.nw-section-header {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .5rem;
}
.nw-dw-logo { font-size: 1.4rem; }
.nw-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 0;
}
.nw-course-note {
  font-size: .8rem;
  color: var(--c-muted);
  background: var(--c-surface2);
  border-radius: var(--radius-sm);
  padding: .45rem .75rem;
  margin-bottom: .85rem;
}
.nw-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: .75rem;
}
.nw-video-card {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  text-decoration: none !important;
  color: var(--c-text);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.nw-video-card:hover {
  border-color: var(--c-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: var(--c-text);
}
.nw-video-thumb {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.nw-video-body { flex: 1; min-width: 0; }
.nw-video-title {
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: .25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nw-video-topic {
  font-size: .75rem;
  color: var(--c-muted);
  line-height: 1.4;
}
.sb-vc-row    { display: flex; gap: .75rem; font-size: .875rem; }
.sb-vc-key    { font-weight: 600; min-width: 58px; color: var(--c-muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; margin-top: .1rem; }

/* Examples */
.sb-examples  { display: flex; flex-direction: column; gap: .6rem; }
.sb-ex-item   { padding: .6rem .75rem; background: var(--c-surface2); border-radius: 10px; }
.sb-ex-conj   { font-weight: 700; font-size: .95rem; color: var(--c-primary); margin-right: .4rem; }
.sb-ex-label  { display: block; margin-bottom: .2rem; }
.sb-ex-sent   { font-size: .9rem; line-height: 1.6; }

/* ════════════════════════════════════════════════════════════════
   AI TUTOR – Integrated into dm-app
   ════════════════════════════════════════════════════════════════ */
.tutor-subview { display: none; }
.tutor-subview.active { display: block; }

/* Tutor selection */
.tutor-select-header { text-align:center; padding:20px 16px 16px; }
.tutor-select-header h1 { font-size:1.4rem; font-weight:800; }
.tutor-select-header p  { color:var(--c-muted); margin-top:4px; font-size:0.9rem; }

.tutor-cards-grid { display:grid; grid-template-columns:1fr; gap:14px; padding:0 0 24px; }
@media(min-width:640px) { .tutor-cards-grid { grid-template-columns:repeat(3,1fr); } }

.tutor-card {
  background:var(--c-surface); border-radius:16px; padding:20px;
  border:2px solid var(--c-border); cursor:pointer; transition:all .2s ease;
  display:flex; flex-direction:column; align-items:center; text-align:center; gap:8px;
}
.tutor-card:hover  { transform:translateY(-3px); box-shadow:0 8px 24px rgba(0,0,0,.1); }
.tutor-card.selected { border-color:var(--card-color,#1a73e8); box-shadow:0 0 0 3px color-mix(in srgb, var(--card-color,#1a73e8) 20%, transparent); }
.tutor-card-emoji  { font-size:2.8rem; line-height:1; }
.tutor-card-name   { font-size:1.1rem; font-weight:700; }
.tutor-card-tagline{ font-size:0.75rem; color:var(--c-muted); font-style:italic; }
.tutor-card-lang-badge { font-size:0.7rem; font-weight:600; padding:2px 9px; border-radius:999px; }
.tutor-card-btn    { margin-top:6px; width:100%; }

/* Onboarding */
.onboard-wrap { max-width:600px; margin:0 auto; padding:4px 0 32px; }
.onboard-title { font-size:1.2rem; font-weight:700; margin-bottom:2px; }
.onboard-sub   { color:var(--c-muted); font-size:0.88rem; margin-bottom:16px; }
.onboard-section { margin-bottom:18px; }
.onboard-section-label { font-weight:600; margin-bottom:8px; font-size:0.82rem; color:var(--c-muted); text-transform:uppercase; letter-spacing:.4px; }
.onboard-pills { display:flex; flex-wrap:wrap; gap:7px; }
.onboard-pill  { padding:7px 14px; border-radius:999px; border:1.5px solid var(--c-border); cursor:pointer; font-size:0.85rem; transition:all .15s; user-select:none; }
.onboard-pill.active { background:var(--c-primary); color:#fff; border-color:transparent; }
.onboard-options { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
@media(min-width:480px) { .onboard-options { grid-template-columns:repeat(3,1fr); } }
.onboard-option { padding:10px 8px; border-radius:12px; border:1.5px solid var(--c-border); cursor:pointer; text-align:center; transition:all .15s; user-select:none; }
.onboard-option .oo-icon  { font-size:1.4rem; margin-bottom:3px; }
.onboard-option .oo-label { font-size:0.78rem; font-weight:600; }
.onboard-option .oo-desc  { font-size:0.67rem; color:var(--c-muted); margin-top:1px; }
.onboard-option.active { border-color:var(--c-primary); background:var(--c-primary-light); }
.onboard-tutor-banner { display:flex; align-items:center; gap:10px; padding:10px 14px; background:var(--c-surface2); border-radius:12px; margin-bottom:16px; cursor:pointer; }
.otb-emoji { font-size:1.8rem; }
.otb-info  { flex:1; }
.otb-name  { font-weight:700; }
.otb-lang  { font-size:0.75rem; color:var(--c-muted); }
.otb-change{ font-size:0.72rem; color:var(--c-primary); }
.scenario-grid { display:grid; grid-template-columns:1fr 1fr; gap:7px; }
@media(min-width:480px) { .scenario-grid { grid-template-columns:repeat(3,1fr); } }
.scenario-tile { padding:9px 7px; border-radius:10px; border:1.5px solid var(--c-border); cursor:pointer; text-align:center; transition:all .15s; user-select:none; }
.scenario-tile .st-icon  { font-size:1.3rem; }
.scenario-tile .st-label { font-size:0.72rem; font-weight:600; margin-top:2px; }
.scenario-tile.active { border-color:var(--c-primary); background:var(--c-primary-light); }

/* Conversation */
.conv-wrap { display:flex; flex-direction:column; height:calc(100vh - 112px); }
.conv-header { background:var(--c-surface); border-bottom:1px solid var(--c-border); padding:10px 14px; display:flex; align-items:center; gap:10px; flex-shrink:0; }
.ch-avatar  { font-size:1.8rem; flex-shrink:0; }
.ch-info    { flex:1; min-width:0; }
.ch-name    { font-weight:700; font-size:0.92rem; }
.ch-status  { font-size:0.72rem; color:var(--c-muted); }
.ch-actions { display:flex; gap:5px; }
.ch-btn     { width:34px; height:34px; border-radius:50%; border:1px solid var(--c-border); background:var(--c-surface); font-size:0.95rem; display:inline-flex; align-items:center; justify-content:center; cursor:pointer; }
.ch-btn:hover { background:var(--c-surface2); }
.conv-messages { flex:1; overflow-y:auto; padding:12px; display:flex; flex-direction:column; gap:8px; scroll-behavior:smooth; }
.conv-bubble { max-width:82%; display:flex; flex-direction:column; gap:3px; animation:fadeUpIn .25s ease; }
@keyframes fadeUpIn { from{opacity:0;transform:translateY(5px)} to{opacity:1;transform:translateY(0)} }
.conv-bubble.bot  { align-self:flex-start; }
.conv-bubble.user { align-self:flex-end; }
.bubble-inner { padding:10px 14px; border-radius:16px; line-height:1.55; font-size:0.9rem; white-space:pre-wrap; word-break:break-word; }
.bot  .bubble-inner { background:var(--c-surface2); border-radius:3px 16px 16px 16px; }
.user .bubble-inner { background:var(--c-primary); color:#fff; border-radius:16px 16px 3px 16px; }
.bubble-time { font-size:0.62rem; color:var(--c-text3,#adb5bd); padding:0 3px; }
.bot .bubble-time  { align-self:flex-start; }
.user .bubble-time { align-self:flex-end; }
.score-chips { display:flex; flex-wrap:wrap; gap:4px; margin-top:3px; }
.score-chip  { font-size:0.66rem; font-weight:600; padding:2px 7px; border-radius:999px; display:inline-flex; align-items:center; gap:2px; }
.thinking-bubble .bubble-inner { display:flex; gap:4px; align-items:center; padding:12px 16px; }
.dot-pulse { width:7px; height:7px; border-radius:50%; background:#adb5bd; animation:dotBounce 1.4s infinite; }
.dot-pulse:nth-child(2) { animation-delay:.2s; }
.dot-pulse:nth-child(3) { animation-delay:.4s; }
@keyframes dotBounce { 0%,80%,100%{transform:scale(1);opacity:.5} 40%{transform:scale(1.3);opacity:1} }

/* Correction card */
.correction-card { max-width:82%; align-self:flex-start; background:#fff8ed; border:1.5px solid #f59e0b; border-radius:12px; padding:10px 12px; font-size:0.82rem; display:flex; flex-direction:column; gap:6px; animation:fadeUpIn .25s ease; }
[data-theme="dark"] .correction-card { background:#2d2000; }
.cc-header   { display:flex; justify-content:space-between; align-items:center; }
.cc-title    { font-weight:700; color:#92400e; font-size:0.78rem; }
.cc-close    { background:none; border:none; cursor:pointer; color:var(--c-muted); }
.cc-orig     { color:var(--c-muted); }
.cc-orig span{ text-decoration:line-through; color:#ef4444; }
.cc-fixed    { font-weight:600; color:#15803d; }
.cc-mistake  { display:flex; gap:5px; align-items:flex-start; }
.cc-mistake-type { font-size:0.65rem; background:#fde68a; color:#92400e; padding:1px 5px; border-radius:999px; font-weight:600; flex-shrink:0; }
.cc-pronun   { color:#7c3aed; }
.cc-explanation { border-top:1px solid #fde68a; padding-top:5px; }

/* Input area */
.conv-input-area { background:var(--c-surface); border-top:1px solid var(--c-border); padding:10px 12px; display:flex; align-items:center; gap:8px; flex-shrink:0; }
.conv-text-input { flex:1; padding:10px 14px; border-radius:999px; border:1.5px solid var(--c-border); font-size:0.9rem; background:var(--c-surface2); outline:none; transition:border-color .15s; }
.conv-text-input:focus { border-color:var(--c-primary); background:var(--c-surface); }
.tutor-mic-btn { width:48px; height:48px; border-radius:50%; border:none; cursor:pointer; background:#e8f0fe; color:var(--c-primary); font-size:1.3rem; display:inline-flex; align-items:center; justify-content:center; transition:all .2s; flex-shrink:0; }
.tutor-mic-btn.listening { background:var(--c-danger); color:#fff; animation:micGlow 1.2s infinite; }
.tutor-mic-btn:disabled { opacity:.5; cursor:not-allowed; animation:none; }
@keyframes micGlow { 0%{box-shadow:0 0 0 0 rgba(192,57,43,.5)} 70%{box-shadow:0 0 0 14px rgba(192,57,43,0)} 100%{box-shadow:0 0 0 0 rgba(192,57,43,0)} }
.tutor-send-btn { width:42px; height:42px; border-radius:50%; border:none; cursor:pointer; background:var(--c-primary); color:#fff; font-size:1rem; display:inline-flex; align-items:center; justify-content:center; flex-shrink:0; transition:background .15s; }
.tutor-send-btn:hover { background:var(--c-primary-h); }
.tutor-send-btn:disabled { opacity:.5; cursor:not-allowed; }

/* Dashboard */
.dash-wrap { max-width:680px; margin:0 auto; padding:4px 0 32px; }
.dash-stat-row { display:flex; gap:10px; margin-bottom:18px; flex-wrap:wrap; }
.dash-stat { flex:1; min-width:100px; background:var(--c-surface); border-radius:12px; padding:12px; text-align:center; box-shadow:0 2px 8px rgba(0,0,0,.07); border:1px solid var(--c-border); }
.ds-val  { font-size:1.5rem; font-weight:800; color:var(--c-primary); }
.ds-label{ font-size:0.7rem; color:var(--c-muted); margin-top:2px; }
.dash-score-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
@media(min-width:480px) { .dash-score-grid { grid-template-columns:repeat(4,1fr); } }
.dash-score-card { background:var(--c-surface); border-radius:14px; padding:14px; text-align:center; box-shadow:0 2px 8px rgba(0,0,0,.07); border:1px solid var(--c-border); }
.dsc-icon  { font-size:1.3rem; margin-bottom:4px; }
.dsc-val   { font-size:1.6rem; font-weight:800; }
.dsc-label { font-size:0.7rem; color:var(--c-muted); }
.dsc-bar   { height:4px; border-radius:999px; background:var(--c-border); margin-top:6px; overflow:hidden; }
.dsc-bar-fill { height:100%; border-radius:999px; transition:width 1s ease; }
.dash-section-title { font-weight:700; font-size:0.82rem; color:var(--c-muted); text-transform:uppercase; letter-spacing:.4px; margin:0 0 8px; }
.dash-mistake-list  { display:flex; flex-direction:column; gap:5px; }
.dash-mistake-item  { background:var(--c-surface); border-radius:8px; padding:8px 10px; border-left:3px solid var(--c-warning); font-size:0.8rem; display:flex; justify-content:space-between; align-items:center; }
.dmi-count { font-size:0.7rem; background:var(--c-warning-bg); color:var(--c-warning); padding:2px 6px; border-radius:999px; font-weight:600; }

/* Wordbook */
.words-wrap { max-width:680px; margin:0 auto; padding:4px 0 32px; }
.words-search { display:flex; gap:7px; margin-bottom:14px; }
.words-search input { flex:1; padding:9px 12px; border-radius:10px; border:1.5px solid var(--c-border); font-size:0.88rem; background:var(--c-surface); color:var(--c-text); }
.word-cards { display:grid; grid-template-columns:1fr; gap:9px; }
@media(min-width:480px) { .word-cards { grid-template-columns:1fr 1fr; } }
.word-card { background:var(--c-surface); border-radius:12px; padding:12px; border:1px solid var(--c-border); display:flex; flex-direction:column; gap:4px; position:relative; }
.wc-word    { font-size:1rem; font-weight:700; color:var(--c-primary); }
.wc-meaning { font-size:0.82rem; }
.wc-example { font-size:0.75rem; color:var(--c-muted); font-style:italic; }
.wc-hint    { font-size:0.7rem; color:#7c3aed; }
.wc-level   { font-size:0.63rem; font-weight:700; padding:2px 6px; border-radius:999px; }
.wc-delete  { position:absolute; top:8px; right:8px; background:none; border:none; cursor:pointer; color:var(--c-muted); font-size:0.8rem; }
.wc-delete:hover { color:var(--c-danger); }

/* Shared */
.view-back-btn { display:inline-flex; align-items:center; gap:5px; background:none; border:none; color:var(--c-primary); font-size:0.85rem; cursor:pointer; padding:0; margin-bottom:14px; }

/* ════════════════════════════════════════════════════════════════
   ADMIN DASHBOARD
   ════════════════════════════════════════════════════════════════ */
.admin-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--c-border);
  padding-bottom: 15px;
}

.admin-section {
  background: var(--c-surface);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  border: 1px solid var(--c-border);
}

.admin-section h2 {
  margin-top: 0;
  margin-bottom: 15px;
  color: var(--c-text);
}

.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.admin-stat-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 15px;
  text-align: center;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--c-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--c-primary);
}

.admin-controls {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.admin-controls label {
  font-weight: 500;
}

.admin-controls select {
  padding: 8px 12px;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  background: var(--c-surface);
  color: var(--c-text);
}

.model-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.model-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border: 2px solid var(--c-border);
  background: var(--c-surface);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  color: var(--c-text);
}

.model-btn:hover {
  border-color: var(--c-primary);
  background: var(--c-surface2);
}

.model-btn.active {
  border-color: var(--c-primary);
  background: var(--c-primary);
  color: white;
}

.admin-table-wrapper {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th {
  background: var(--c-surface2);
  padding: 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--c-border);
  color: var(--c-text);
}

.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
}

.admin-table tbody tr:hover {
  background: var(--c-surface2);
}

.admin-action-btn {
  padding: 6px 10px;
  font-size: 0.8rem;
  margin-right: 5px;
  cursor: pointer;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  border-radius: 6px;
  transition: 0.2s;
  color: var(--c-text);
}

.admin-action-btn:hover {
  background: var(--c-surface2);
}

.admin-action-btn.danger {
  color: var(--c-danger);
  border-color: var(--c-danger);
}

.admin-action-btn.success {
  color: var(--c-success);
  border-color: var(--c-success);
}

@media (max-width: 768px) {
  .admin-stat-grid {
    grid-template-columns: 1fr;
  }
  
  .admin-table {
    font-size: 0.8rem;
  }
  
  .admin-table th, .admin-table td {
    padding: 8px;
  }
  
  .model-buttons {
    flex-direction: column;
  }
  
  .model-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Dynamic Word Order Strip ─────────────────────────────────── */
.sb-word-order-dynamic {
  margin: .6rem 0 .5rem;
  min-height: 0;
}
.sb-wo-dyn-label {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--c-muted);
  margin-bottom: .45rem;
}
.sb-wo-dyn-slots {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  align-items: center;
}
.sb-wo-dyn-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: .1rem;
  padding: .3rem .6rem;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: default;
}
.sb-wo-dyn-chip em {
  font-style: normal;
  font-size: .6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  opacity: .8;
}
.sb-wo-dyn-subj   { background: #dbeafe; color: #1d4ed8; border-color: #93c5fd; }
.sb-wo-dyn-verb   { background: #dcfce7; color: #15803d; border-color: #86efac; }
.sb-wo-dyn-modal  { background: #f3e8ff; color: #7e22ce; border-color: #d8b4fe; }
.sb-wo-dyn-time   { background: #fef3c7; color: #92400e; border-color: #fcd34d; }
.sb-wo-dyn-manner { background: #ffedd5; color: #c2410c; border-color: #fdba74; }
.sb-wo-dyn-place  { background: #ecfdf5; color: #065f46; border-color: #6ee7b7; }
.sb-wo-dyn-article{ background: var(--c-surface2); color: var(--c-muted); border-color: var(--c-border); font-size: .8rem; }
.sb-wo-dyn-noun   { background: #fef2f2; color: #991b1b; border-color: #fca5a5; }
.sb-wo-dyn-conj   { background: #f0f9ff; color: #0369a1; border-color: #7dd3fc; }
.sb-wo-dyn-other  { background: var(--c-surface2); color: var(--c-text2); border-color: var(--c-border); }
.sb-wo-dyn-verbzusatz { background: rgba(250,82,82,.12); color: #b91c1c; border-color: rgba(250,82,82,.45); font-weight: 700; }
.sb-wo-dyn-punc   { font-size: 1rem; font-weight: 700; color: var(--c-muted); padding: 0 .1rem; border: none; background: none; }

[data-theme="dark"] .sb-wo-dyn-subj   { background: rgba(29,78,216,.25); color: #93c5fd; border-color: rgba(147,197,253,.4); }
[data-theme="dark"] .sb-wo-dyn-verb   { background: rgba(21,128,61,.25); color: #86efac; border-color: rgba(134,239,172,.4); }
[data-theme="dark"] .sb-wo-dyn-modal  { background: rgba(126,34,206,.25); color: #d8b4fe; border-color: rgba(216,180,254,.4); }
[data-theme="dark"] .sb-wo-dyn-time   { background: rgba(146,64,14,.25); color: #fcd34d; border-color: rgba(252,211,77,.4); }
[data-theme="dark"] .sb-wo-dyn-manner { background: rgba(194,65,12,.25); color: #fdba74; border-color: rgba(253,186,116,.4); }
[data-theme="dark"] .sb-wo-dyn-place  { background: rgba(6,95,70,.25); color: #6ee7b7; border-color: rgba(110,231,183,.4); }
[data-theme="dark"] .sb-wo-dyn-noun   { background: rgba(153,27,27,.25); color: #fca5a5; border-color: rgba(252,165,165,.4); }
[data-theme="dark"] .sb-wo-dyn-conj   { background: rgba(3,105,161,.25); color: #7dd3fc; border-color: rgba(125,211,252,.4); }
[data-theme="dark"] .sb-wo-dyn-verbzusatz { background: rgba(185,28,28,.3); color: #fca5a5; border-color: rgba(252,165,165,.5); }

.grammar-note {
  background: rgba(253,126,20,.08);
  border-left: 3px solid var(--c-warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .6rem .9rem;
  font-size: .875rem;
  margin-bottom: 1rem;
}
.grammar-table-wrap { overflow-x: auto; margin-bottom: 1rem; }
.grammar-examples { display: flex; flex-direction: column; gap: .5rem; margin-bottom: 1rem; }
.gram-ex { display: flex; gap: 1rem; align-items: baseline; font-size: .875rem; }
.gram-de { font-weight: 600; color: var(--c-text); min-width: 200px; }
.gram-en { color: var(--c-muted); font-style: italic; }

.grammar-quiz, .grammar-exercises { display: flex; flex-direction: column; gap: .75rem; margin-top: .75rem; }
.quiz-item { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: .85rem 1rem; }
.quiz-q { font-weight: 600; margin-bottom: .6rem; }
.quiz-opts { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: .5rem; }
.quiz-feedback { padding: .35rem .6rem; border-radius: var(--radius-sm); font-size: .8rem; font-weight: 600; background: var(--c-surface); }

.exercise-item { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius-sm); padding: .85rem 1rem; }
.ex-q { margin-bottom: .5rem; }
.ex-opts { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: .5rem; }
.ex-answer { padding: .35rem .6rem; border-radius: var(--radius-sm); font-size: .85rem; background: rgba(64,192,87,.1); border: 1px solid rgba(64,192,87,.25); color: var(--c-success); margin-bottom: .4rem; }

/* ── Grammar Exercise Player ────────────────────────────────────── */
.ex-practice-wrap { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--c-border); }
.gx-player { background: var(--c-surface2); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.25rem; }
.gx-progress-wrap { display: flex; align-items: center; gap: .75rem; margin-bottom: .75rem; }
.gx-progress-bar { flex: 1; height: 7px; background: var(--c-border); border-radius: 99px; overflow: hidden; }
.gx-progress-fill { height: 100%; background: var(--c-primary); border-radius: 99px; transition: width .3s; }
.gx-progress-label { font-size: .75rem; color: var(--c-muted); white-space: nowrap; }
.gx-type-badge { display: inline-block; font-size: .7rem; font-weight: 700; background: var(--c-primary); color: #fff; border-radius: 99px; padding: 2px 10px; margin-bottom: .65rem; }
.gx-question { font-size: 1.05rem; font-weight: 600; margin-bottom: 1rem; line-height: 1.5; }
.gx-mc-opts { display: flex; flex-direction: column; gap: .5rem; margin-bottom: .75rem; }
.gx-mc-opts .btn { text-align: left; justify-content: flex-start; }
.gx-fill-wrap { display: flex; gap: .5rem; align-items: center; margin-bottom: .75rem; }
.gx-fill-input { flex: 1; padding: .5rem .75rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-bg); color: var(--c-text); font-size: .95rem; }
.gx-fill-input:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 2px var(--c-primary-alpha); }
.gx-reorder-wrap { margin-bottom: .75rem; }
.gx-reorder-stage { min-height: 42px; border: 2px dashed var(--c-primary); border-radius: var(--radius-sm); padding: .4rem; display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .5rem; cursor: pointer; }
.gx-reorder-pool { display: flex; flex-wrap: wrap; gap: .3rem; margin-bottom: .5rem; }
.gx-word-tile { background: var(--c-primary); color: #fff; padding: .3rem .65rem; border-radius: var(--radius-sm); font-size: .9rem; cursor: pointer; user-select: none; transition: opacity .15s; }
.gx-word-tile:hover { opacity: .85; }
.gx-feedback { padding: .5rem .75rem; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; margin-bottom: .75rem; }
.gx-correct { background: rgba(64,192,87,.12); color: var(--c-success); border: 1px solid rgba(64,192,87,.3); }
.gx-wrong   { background: rgba(255,92,92,.1);  color: var(--c-danger);  border: 1px solid rgba(255,92,92,.25); }
.gx-next { margin-top: .25rem; }
.gx-result { text-align: center; padding: 1.5rem 1rem; }
.gx-result-icon { font-size: 3rem; margin-bottom: .5rem; }
.gx-result h3 { margin-bottom: 1rem; }
.gx-result-stats { display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; }

@media (max-width: 768px) {
  .grammar-layout { grid-template-columns: 1fr; }
  .grammar-list { max-height: 220px; overflow-y: auto; }
  .gram-ex { flex-direction: column; gap: .15rem; }
  .gram-de { min-width: auto; }
}

/* ── Reading / Stories View ─────────────────────────────────────── */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .75rem;
  margin-bottom: 1rem;
}
.story-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.1rem;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.story-card:hover { border-color: var(--c-primary); box-shadow: var(--shadow); }
.story-icon { font-size: 2rem; margin-bottom: .4rem; }
.story-info { display: flex; align-items: center; gap: .4rem; margin-bottom: .4rem; }
.story-category { font-size: .75rem; color: var(--c-muted); }
.story-title { font-size: .95rem; font-weight: 700; margin: 0 0 .4rem; }
.story-meta { font-size: .75rem; color: var(--c-muted); }

.story-reader { max-width: 720px; margin: 0 auto; }
.story-reader-header { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--c-border); }
.story-body { line-height: 1.85; margin-bottom: 2rem; }
.story-para { margin-bottom: 1rem; font-size: 1rem; }

.story-quiz {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.story-quiz h3 { margin-bottom: 1rem; }
.story-quiz .quiz-item { margin-bottom: .75rem; }