/* ============================
   محمد انجلش — Styles
   ============================ */

/* ---------- Variables ---------- */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #e0e7ff;
  --secondary: #10b981;
  --secondary-light: #d1fae5;
  --accent: #f59e0b;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --warning: #f59e0b;

  --bg: #f0f4ff;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(99,102,241,.07);
  --shadow-lg: 0 8px 30px rgba(99,102,241,.12);

  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --font: 'Cairo', sans-serif;
  --transition: .2s ease;
}

/* Dark mode */
[data-theme="dark"] {
  --bg: #0d0d1a;
  --surface: #1a1a2e;
  --surface-2: #16213e;
  --border: #2d2d4e;
  --shadow: 0 1px 3px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.4);
  --text: #f1f5f9;
  --text-2: #94a3b8;
  --text-3: #64748b;
  --primary-light: #1e1b4b;
  --secondary-light: #022c22;
  --danger-light: #450a0a;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  padding-bottom: 80px;
}

/* ---------- Header ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: .75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  flex-shrink: 0;
}

.logo-emoji { font-size: 1.6rem; }

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-en {
  font-weight: 400;
  font-size: 1rem;
}

/* Desktop Nav */
.desktop-nav {
  display: flex;
  gap: .25rem;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-2);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  padding: .45rem .85rem;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-btn:hover { background: var(--primary-light); color: var(--primary); }
.nav-btn.active { background: var(--primary); color: white; }

.header-actions {
  display: flex;
  gap: .5rem;
  flex-shrink: 0;
}

.icon-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition);
}

.icon-btn:hover { background: var(--primary-light); border-color: var(--primary); }

/* ---------- Main Content ---------- */
.main-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ---------- Tabs ---------- */
.tab-pane { display: none; flex-direction: column; gap: 1.25rem; }
.tab-pane.active { display: flex; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.card:hover { box-shadow: var(--shadow-lg); }

.card-header {
  margin-bottom: 1.25rem;
}

.card-header h2, .card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.card-sub {
  display: block;
  font-size: .85rem;
  color: var(--text-2);
  margin-top: .25rem;
}

/* ---------- Stats Bar (Home) ---------- */
.stats-bar {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}

.stat-chip {
  flex: 1;
  min-width: 100px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .85rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .2rem;
  box-shadow: var(--shadow);
}

.stat-chip.highlight { border-color: var(--accent); background: linear-gradient(135deg, #fef3c7, #fffbeb); }
.stat-chip.review { border-color: var(--primary); background: var(--primary-light); }
[data-theme="dark"] .stat-chip.highlight { background: #1c1500; }

.stat-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}

.stat-chip.highlight .stat-num { color: var(--accent); }

.stat-lbl {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-2);
  text-align: center;
}

/* ---------- Add Word Card ---------- */
.add-word-card { border: 2px solid var(--primary-light); }
[data-theme="dark"] .add-word-card { border-color: var(--border); }

.word-input-row {
  display: flex;
  gap: .75rem;
  align-items: center;
}

.word-input {
  flex: 1;
  font-family: var(--font);
  font-size: 1.2rem;
  font-weight: 600;
  padding: .85rem 1.25rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
  text-align: left;
}

.word-input:focus { border-color: var(--primary); background: var(--surface); }
.word-input::placeholder { color: var(--text-3); font-weight: 400; font-size: 1rem; }

.btn-search {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .85rem 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(99,102,241,.3);
}

.btn-search:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,.4); }
.btn-search:active { transform: translateY(0); }

/* AI Result */
.ai-result { margin-top: 1.25rem; }

.loading-area {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem;
  color: var(--text-2);
  font-size: .9rem;
}

.spinner {
  width: 22px; height: 22px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.result-content {
  animation: fadeIn .3s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: 1rem;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  border: 1px solid var(--border);
}

.result-item { display: flex; flex-direction: column; gap: .25rem; }
.result-item.full { grid-column: 1 / -1; }

.ri-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.ri-val { font-size: .95rem; color: var(--text); font-weight: 500; }
.meaning-val { font-size: 1.1rem; font-weight: 700; color: var(--primary); }
.pron-val { font-family: monospace; font-size: 1rem; color: var(--text-2); direction: ltr; text-align: left; }
.example-en { font-style: italic; color: var(--text); font-size: .92rem; direction: ltr; text-align: left; }
.example-ar { color: var(--text-2); font-size: .88rem; }
.tip-val { color: var(--secondary); font-weight: 600; }

.badge {
  display: inline-block;
  padding: .15rem .6rem;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 700;
  background: var(--primary-light);
  color: var(--primary);
}

.source-row {
  margin-bottom: 1rem;
}

.source-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: .4rem;
}

.source-input {
  width: 100%;
  font-family: var(--font);
  font-size: .9rem;
  padding: .65rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}

.source-input:focus { border-color: var(--primary); }

.action-row {
  display: flex;
  gap: .75rem;
  align-items: center;
}

/* ---------- Buttons ---------- */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: var(--radius-xs);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 700;
  padding: .65rem 1.4rem;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 3px 10px rgba(99,102,241,.25);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 5px 16px rgba(99,102,241,.35); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 600;
  padding: .65rem 1.25rem;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-sm { padding: .4rem .85rem; font-size: .82rem; }

/* ---------- Review Reminder ---------- */
.review-card { border: 2px dashed var(--primary); background: var(--primary-light); }
[data-theme="dark"] .review-card { background: #1e1b4b; }

.review-reminder {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.rr-icon { font-size: 2rem; }
.rr-text { flex: 1; }
.rr-text strong { display: block; font-size: 1rem; font-weight: 700; color: var(--primary); }
.rr-text span { font-size: .88rem; color: var(--text-2); }

/* ---------- Recent Words ---------- */
.words-mini-list { display: flex; flex-direction: column; gap: .5rem; }

.word-mini-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem 1rem;
  background: var(--surface-2);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.word-mini-item:hover { border-color: var(--primary); background: var(--primary-light); }

.wmi-word {
  font-weight: 700;
  color: var(--text);
  font-size: .95rem;
  direction: ltr;
  min-width: 120px;
}

.wmi-meaning { flex: 1; color: var(--text-2); font-size: .88rem; }
.wmi-badge { font-size: .72rem; background: var(--primary-light); color: var(--primary); padding: .2rem .5rem; border-radius: 10px; font-weight: 700; }

/* ---------- Library: Words Grid ---------- */
.lib-controls {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-input {
  flex: 1;
  min-width: 150px;
  font-family: var(--font);
  font-size: .88rem;
  padding: .55rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}

.search-input:focus { border-color: var(--primary); }

.select-input {
  font-family: var(--font);
  font-size: .88rem;
  padding: .55rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}

.select-input:focus { border-color: var(--primary); }

.words-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: .75rem;
  margin-top: .5rem;
}

.word-card {
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  transition: all var(--transition);
  position: relative;
}

.word-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-1px); }

.wc-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: .5rem;
}

.wc-word {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
  direction: ltr;
}

.wc-actions { display: flex; gap: .3rem; }

.wc-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  opacity: .5;
  transition: opacity var(--transition);
  padding: .15rem;
}

.wc-btn:hover { opacity: 1; }

.wc-meaning { font-size: .92rem; font-weight: 600; color: var(--text); margin-bottom: .35rem; }
.wc-example { font-size: .82rem; color: var(--text-2); font-style: italic; direction: ltr; text-align: left; }
.wc-source { font-size: .75rem; color: var(--text-3); margin-top: .4rem; }
.wc-source span { background: var(--surface); border: 1px solid var(--border); padding: .1rem .4rem; border-radius: 4px; }

.wc-footer {
  display: flex;
  gap: .4rem;
  margin-top: .6rem;
  align-items: center;
}

.wc-badge {
  font-size: .7rem;
  padding: .15rem .5rem;
  border-radius: 10px;
  font-weight: 700;
  background: var(--primary-light);
  color: var(--primary);
}

.wc-badge.diff-سهل { background: var(--secondary-light); color: var(--secondary); }
.wc-badge.diff-صعب { background: var(--danger-light); color: var(--danger); }

.wc-review-date { font-size: .72rem; color: var(--text-3); margin-right: auto; }

/* ---------- SR Review Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn .2s ease;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  position: relative;
  animation: slideUp .3s ease;
}

@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

.review-modal { text-align: center; }

.review-progress {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.5rem;
}

.rp-bar {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.rp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 3px;
  transition: width .5s ease;
}

.review-word-display {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text);
  margin: 1.5rem 0;
  direction: ltr;
  letter-spacing: -.02em;
}

.review-hint { color: var(--text-2); font-size: .9rem; margin-bottom: 1rem; }

.review-answer {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 1.25rem;
  text-align: right;
}

.ra-meaning { font-size: 1.2rem; font-weight: 700; color: var(--primary); margin-bottom: .5rem; }
.ra-example { font-size: .88rem; font-style: italic; color: var(--text-2); direction: ltr; text-align: left; }
.ra-example-ar { font-size: .85rem; color: var(--text-2); margin-top: .25rem; }

.review-rate-label { font-size: .85rem; color: var(--text-2); margin-bottom: .75rem; }

.quality-btns { display: flex; gap: .75rem; justify-content: center; }

.qbtn {
  flex: 1;
  padding: .75rem;
  border: 2px solid;
  border-radius: var(--radius-xs);
  font-family: var(--font);
  font-size: .88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
}

.qbtn.bad { border-color: var(--danger); color: var(--danger); background: transparent; }
.qbtn.bad:hover { background: var(--danger); color: white; }
.qbtn.ok { border-color: var(--accent); color: var(--accent); background: transparent; }
.qbtn.ok:hover { background: var(--accent); color: white; }
.qbtn.good { border-color: var(--secondary); color: var(--secondary); background: transparent; }
.qbtn.good:hover { background: var(--secondary); color: white; }

.modal-close-btn {
  margin-top: 1rem;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: var(--font);
  font-size: .85rem;
  color: var(--text-2);
  padding: .4rem 1rem;
  cursor: pointer;
  transition: all var(--transition);
}

.modal-close-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ---------- Exercises ---------- */
.ex-tabs {
  display: flex;
  gap: .5rem;
  background: var(--surface);
  padding: .5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.ex-tab {
  flex: 1;
  padding: .6rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  font-family: var(--font);
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.ex-tab:hover { background: var(--primary-light); color: var(--primary); }
.ex-tab.active { background: var(--primary); color: white; box-shadow: 0 2px 8px rgba(99,102,241,.3); }

.ex-panel { display: none; }
.ex-panel.active { display: block; }

.textarea {
  width: 100%;
  font-family: 'Cairo', monospace;
  font-size: .95rem;
  padding: .85rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
  margin-bottom: 1rem;
  line-height: 1.7;
  text-align: left;
}

.textarea:focus { border-color: var(--primary); }
.textarea::placeholder { color: var(--text-3); font-size: .88rem; direction: rtl; text-align: right; }

/* Result Box */
.result-box {
  margin-top: 1.25rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  animation: fadeIn .3s ease;
}

.result-section { padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); }
.result-section:last-child { border-bottom: none; }

.rs-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .4rem;
}

.rs-val { font-size: .95rem; color: var(--text); }

.correct-box {
  background: var(--secondary-light);
  border: 1.5px solid var(--secondary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: .75rem;
}

[data-theme="dark"] .correct-box { background: #022c22; }

.correct-box-label { font-size: .78rem; font-weight: 700; color: var(--secondary); margin-bottom: .35rem; }
.correct-sentence { font-size: 1rem; font-weight: 600; color: var(--text); direction: ltr; text-align: left; }

.error-item {
  background: var(--danger-light);
  border-right: 3px solid var(--danger);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  padding: .65rem .9rem;
  margin-bottom: .5rem;
}

[data-theme="dark"] .error-item { background: rgba(239,68,68,.1); }

.ei-original { font-size: .82rem; color: var(--danger); font-weight: 700; direction: ltr; text-align: left; margin-bottom: .2rem; }
.ei-corrected { font-size: .82rem; color: var(--secondary); font-weight: 700; direction: ltr; text-align: left; margin-bottom: .25rem; }
.ei-explanation { font-size: .85rem; color: var(--text-2); }

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .35rem .9rem;
  border-radius: 20px;
  font-weight: 800;
  font-size: 1rem;
}

.score-good { background: var(--secondary-light); color: var(--secondary); }
.score-mid { background: #fef3c7; color: var(--accent); }
.score-bad { background: var(--danger-light); color: var(--danger); }

.feedback-box {
  background: var(--primary-light);
  border-radius: var(--radius-xs);
  padding: .75rem 1rem;
  font-size: .88rem;
  color: var(--text-2);
  margin-top: .5rem;
}

[data-theme="dark"] .feedback-box { background: #1e1b4b; }

/* Challenge */
.challenge-controls { display: flex; gap: .75rem; align-items: center; margin-bottom: 1.25rem; flex-wrap: wrap; }

.challenge-sentence-display {
  background: var(--surface-2);
  border: 2px solid var(--primary-light);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.csd-sentence {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  direction: ltr;
  text-align: left;
  margin-bottom: .5rem;
  line-height: 1.7;
}

.csd-meta { font-size: .82rem; color: var(--text-2); }
.csd-hint { font-size: .85rem; color: var(--accent); margin-top: .4rem; font-weight: 600; }

/* Writing result */
.scores-row { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .75rem; }

.score-chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: .4rem .75rem;
  font-size: .82rem;
  font-weight: 700;
  color: var(--text-2);
  text-align: center;
}

.score-chip span { display: block; font-size: 1.1rem; color: var(--primary); }

/* Reading result */
.reading-summary {
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 1rem;
  font-size: .92rem;
  color: var(--text);
  line-height: 1.8;
}

[data-theme="dark"] .reading-summary { background: #1e1b4b; }

.vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: .6rem;
}

.vocab-item {
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem;
  cursor: pointer;
  transition: all var(--transition);
}

.vocab-item:hover { border-color: var(--primary); }
.vi-word { font-weight: 700; color: var(--primary); direction: ltr; text-align: left; }
.vi-meaning { font-size: .85rem; color: var(--text-2); margin-top: .2rem; }
.vi-context { font-size: .78rem; color: var(--text-3); font-style: italic; direction: ltr; text-align: left; margin-top: .3rem; }

.add-vocab-btn {
  margin-top: .5rem;
  background: var(--primary-light);
  border: none;
  border-radius: 4px;
  padding: .2rem .5rem;
  font-size: .75rem;
  color: var(--primary);
  cursor: pointer;
  font-family: var(--font);
  font-weight: 700;
  transition: background var(--transition);
}

.add-vocab-btn:hover { background: var(--primary); color: white; }

/* ---------- Chat ---------- */
.chat-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; height: 70vh; min-height: 500px; }

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-header h2 { font-size: 1.1rem; }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.chat-msg { display: flex; }
.chat-msg.user { justify-content: flex-end; }
.chat-msg.ai { justify-content: flex-start; }

.msg-bubble {
  max-width: 78%;
  padding: .85rem 1.1rem;
  border-radius: 16px;
  font-size: .9rem;
  line-height: 1.7;
}

.chat-msg.user .msg-bubble {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-bottom-left-radius: 4px;
  direction: ltr;
  text-align: left;
}

.chat-msg.ai .msg-bubble {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-right-radius: 4px;
}

.msg-note {
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px dashed var(--border);
  font-size: .82rem;
  color: var(--text-2);
  direction: rtl;
  text-align: right;
}

.chat-msg.user .msg-note { color: rgba(255,255,255,.8); border-top-color: rgba(255,255,255,.3); }

.chat-typing {
  display: flex;
  gap: 4px;
  padding: .85rem 1.1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  border-bottom-right-radius: 4px;
  align-items: center;
  width: fit-content;
}

.typing-dot {
  width: 7px; height: 7px;
  background: var(--text-3);
  border-radius: 50%;
  animation: bounce .8s ease infinite;
}

.typing-dot:nth-child(2) { animation-delay: .15s; }
.typing-dot:nth-child(3) { animation-delay: .3s; }

@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); } 30% { transform: translateY(-6px); } }

.chat-input-row {
  display: flex;
  gap: .5rem;
  padding: .85rem 1.25rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  font-family: var(--font);
  font-size: .95rem;
  padding: .7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
  direction: ltr;
  text-align: left;
}

.chat-input:focus { border-color: var(--primary); }

.btn-send {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  border-radius: var(--radius-xs);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}

.btn-send:hover { transform: scale(1.08); }

/* ---------- Daily Words ---------- */
.daily-controls { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-bottom: 1.25rem; }

.daily-words { display: flex; flex-direction: column; gap: .75rem; }

.daily-word-card {
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  transition: all var(--transition);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.daily-word-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }

.dwc-main { flex: 1; }
.dwc-word { font-size: 1.15rem; font-weight: 800; color: var(--primary); direction: ltr; }
.dwc-meaning { font-size: .95rem; font-weight: 600; color: var(--text); margin-top: .2rem; }
.dwc-pron { font-size: .82rem; color: var(--text-3); font-family: monospace; direction: ltr; }
.dwc-example { font-size: .85rem; font-style: italic; color: var(--text-2); direction: ltr; text-align: left; margin-top: .35rem; }
.dwc-example-ar { font-size: .82rem; color: var(--text-2); margin-top: .15rem; }
.dwc-tip { font-size: .82rem; color: var(--secondary); margin-top: .35rem; font-weight: 600; }

.dwc-add {
  flex-shrink: 0;
  background: var(--primary-light);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-xs);
  color: var(--primary);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 700;
  padding: .4rem .8rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.dwc-add:hover { background: var(--primary); color: white; }
.dwc-add.saved { background: var(--secondary-light); border-color: var(--secondary); color: var(--secondary); cursor: default; }

/* ---------- Progress ---------- */
.streak-card {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
}

.streak-content {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: .5rem;
  flex-wrap: wrap;
}

.streak-flame { font-size: 3rem; }

.streak-info { display: flex; align-items: baseline; gap: .5rem; }
.streak-num { font-size: 3.5rem; font-weight: 900; line-height: 1; }
.streak-label { font-size: 1rem; opacity: .85; }
.streak-msg { font-size: .9rem; opacity: .85; margin-right: auto; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .75rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.sc-icon { font-size: 1.5rem; margin-bottom: .4rem; }
.sc-num { font-size: 2rem; font-weight: 900; color: var(--primary); line-height: 1.2; }
.sc-label { font-size: .78rem; color: var(--text-2); font-weight: 600; margin-top: .2rem; }

/* Activity Chart */
.activity-chart {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  margin-top: .75rem;
}

.ac-day {
  width: 22px; height: 22px;
  border-radius: 4px;
  background: var(--border);
  title-attr: '';
  cursor: default;
  transition: all var(--transition);
  position: relative;
}

.ac-day:hover { transform: scale(1.3); }

.ac-day.level-1 { background: #bbf7d0; }
.ac-day.level-2 { background: #4ade80; }
.ac-day.level-3 { background: #16a34a; }
.ac-day.level-4 { background: #14532d; }
[data-theme="dark"] .ac-day.level-1 { background: #052e16; }
[data-theme="dark"] .ac-day.level-2 { background: #15803d; }
[data-theme="dark"] .ac-day.level-3 { background: #16a34a; }
[data-theme="dark"] .ac-day.level-4 { background: #4ade80; }

/* Errors */
.error-log-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .75rem 1rem;
  background: var(--surface-2);
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  margin-bottom: .5rem;
}

.eli-count {
  background: var(--danger-light);
  color: var(--danger);
  font-weight: 800;
  font-size: .82rem;
  padding: .2rem .5rem;
  border-radius: 10px;
  flex-shrink: 0;
}

.eli-content { flex: 1; }
.eli-original { font-size: .88rem; color: var(--danger); direction: ltr; text-align: left; margin-bottom: .2rem; }
.eli-fix { font-size: .88rem; color: var(--secondary); direction: ltr; text-align: left; }
.eli-exp { font-size: .82rem; color: var(--text-2); margin-top: .2rem; }

/* ---------- Settings ---------- */
.api-status-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.api-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .9rem;
}

.api-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-3);
  flex-shrink: 0;
}

.api-item.connected .api-dot { background: var(--secondary); }
.api-item.disconnected .api-dot { background: var(--danger); }

.api-badge {
  margin-right: auto;
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  background: var(--border);
  padding: .15rem .5rem;
  border-radius: 8px;
}

.api-item.connected .api-badge { background: var(--secondary-light); color: var(--secondary); }
.api-item.disconnected .api-badge { background: var(--danger-light); color: var(--danger); }

.settings-section { margin-bottom: 1.5rem; }
.settings-section h3 { font-size: 1rem; font-weight: 700; margin-bottom: .6rem; }
.settings-note { font-size: .85rem; color: var(--text-2); margin-bottom: .5rem; line-height: 1.6; }
.settings-note a { color: var(--primary); }

.env-preview {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: .75rem 1rem;
  font-family: monospace;
  font-size: .82rem;
  color: var(--text-2);
  line-height: 2;
}

/* ---------- Translate ---------- */
.translate-direction {
  display: flex;
  align-items: center;
  gap: .75rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1.25rem;
  margin-bottom: 1.25rem;
}

.td-lang {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  flex: 1;
  justify-content: center;
}

.td-flag { font-size: 1.4rem; }

.td-swap {
  background: var(--primary-light);
  border: 1.5px solid var(--primary);
  border-radius: 50%;
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--primary);
  flex-shrink: 0;
}

.td-swap:hover { background: var(--primary); color: white; transform: rotate(180deg); }

.translate-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.translate-box { display: flex; flex-direction: column; gap: .4rem; }

.tb-label {
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.translate-textarea { margin-bottom: 0; resize: none; }

.translate-output {
  flex: 1;
  min-height: 160px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  font-size: .95rem;
  color: var(--text);
  line-height: 1.8;
  white-space: pre-wrap;
}

.translate-placeholder { color: var(--text-3); font-size: .88rem; }

.tb-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.char-count { font-size: .75rem; color: var(--text-3); }
.char-count.over { color: var(--danger); }

.translate-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.translate-engine {
  font-size: .8rem;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: .35rem;
}

.translate-engine.deepl { color: #06b6d4; font-weight: 700; }
.translate-engine.gemini { color: var(--primary); font-weight: 700; }

.quick-translate-section {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.quick-translate-section h3 { font-size: 1rem; font-weight: 700; margin-bottom: .25rem; }

.quick-result-card {
  background: var(--surface-2);
  border: 1.5px solid var(--secondary);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.qrc-info { flex: 1; }
.qrc-word { font-size: 1.1rem; font-weight: 800; color: var(--primary); direction: ltr; }
.qrc-meaning { font-size: .95rem; color: var(--text); font-weight: 600; margin-top: .2rem; }
.qrc-engine { font-size: .75rem; color: var(--text-3); margin-top: .2rem; }

/* ---------- Mobile Bottom Nav ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0; right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: .4rem .25rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,.08);
  z-index: 100;
}

.mnav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .15rem;
  padding: .35rem;
  background: transparent;
  border: none;
  font-family: var(--font);
  font-size: .62rem;
  color: var(--text-3);
  cursor: pointer;
  transition: color var(--transition);
  border-radius: var(--radius-xs);
}

.mnav-btn span:first-child { font-size: 1.2rem; }
.mnav-btn.active { color: var(--primary); }
.mnav-btn:hover { color: var(--primary); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1e293b;
  color: white;
  padding: .7rem 1.5rem;
  border-radius: 30px;
  font-size: .9rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0,0,0,.3);
  z-index: 300;
  transition: all .3s ease;
  pointer-events: none;
  opacity: 0;
  white-space: nowrap;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.success { background: var(--secondary); }
.toast.error { background: var(--danger); }

/* ---------- Empty State ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  padding: 2rem;
  color: var(--text-3);
  text-align: center;
}

.empty-icon { font-size: 2.5rem; }
.empty-state p { font-size: .9rem; }

/* ---------- Utility ---------- */
.hidden { display: none !important; }
.loading { opacity: .6; pointer-events: none; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .mobile-nav { display: flex; }
  .main-content { padding: 1rem .75rem; padding-bottom: 90px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .quality-btns { flex-direction: column; }
  .word-input-row { flex-direction: column; }
  .btn-search { width: 100%; justify-content: center; }
  .chat-card { height: 80vh; }
  .review-word-display { font-size: 2rem; }
  .logo-text { font-size: 1.1rem; }
  .words-grid { grid-template-columns: 1fr; }
  .header-inner { padding: .6rem 1rem; }
}

@media (max-width: 480px) {
  .stats-bar { flex-direction: row; }
  .stat-chip { padding: .65rem; }
  .stat-num { font-size: 1.4rem; }
  .streak-num { font-size: 2.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: .5rem; }
  .sc-num { font-size: 1.6rem; }
}