/* ===========================================================
   Persian Flashcards — Persian tile theme (light)
   Palette: Persian blue #0f3d5c · turquoise #1f9e8a · gold #c9a227
   =========================================================== */
:root {
  --blue-900: #0c2f47;
  --blue-800: #0f3d5c;
  --blue-700: #14506e;
  --blue-600: #1c6c8f;
  --turq: #1f9e8a;
  --turq-soft: #e3f3ef;
  --gold: #c9a227;
  --gold-soft: #f6efd9;
  --ink: #1d2a35;
  --ink-soft: #4a5a68;
  --paper: #f6f1e7;
  --paper-2: #fbf8f1;
  --card-ivory: #fdfaf3;
  --line: #e3ddcf;
  --shadow: 0 10px 30px rgba(15, 61, 92, .15);
  --shadow-sm: 0 3px 10px rgba(15, 61, 92, .12);
  --radius: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Noto Naskh Arabic", "Vazirmatn", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 100% -10%, #e7f1f4 0%, transparent 55%),
    radial-gradient(900px 500px at -10% 110%, #f3ecd8 0%, transparent 50%),
    var(--paper);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }

/* ---------- Header ---------- */
.app-header {
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700) 60%, var(--blue-600));
  color: #fff;
  padding: 18px clamp(14px, 4vw, 40px) 10px;
  box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 30;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 52px; height: 52px; border-radius: 14px; flex: 0 0 auto;
  display: grid; place-items: center;
  font-family: "Noto Naskh Arabic", "Vazirmatn", serif;
  font-size: 26px; font-weight: 700; color: var(--blue-900);
  background: linear-gradient(160deg, #f6e6a8, var(--gold));
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.35), var(--shadow-sm);
}
.brand-text { flex: 1 1 auto; min-width: 0; }
.brand-text h1 { margin: 0; font-size: clamp(18px, 2.4vw, 24px); letter-spacing: .2px; }
.brand-text p { margin: 3px 0 0; font-size: 12.5px; opacity: .82; line-height: 1.4; }
.app-ver {
  align-self: flex-start; font-size: 12px; font-weight: 700; color: var(--blue-900);
  background: var(--gold-soft); border-radius: 999px; padding: 3px 10px;
}

/* ---------- Level tabs ---------- */
.level-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 8px; }
.level-tab {
  border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.06);
  color: #eaf3f7; padding: 7px 13px; border-radius: 999px; cursor: pointer;
  font-size: 13px; font-weight: 600; transition: .18s; white-space: nowrap;
}
.level-tab:hover { background: rgba(255,255,255,.16); }
.level-tab.active {
  background: var(--gold); color: var(--blue-900); border-color: var(--gold);
  box-shadow: 0 4px 12px rgba(201,162,39,.4);
}
.level-tab small { display: block; font-weight: 500; opacity: .8; font-size: 10.5px; }

/* ---------- Nav ---------- */
.app-nav { display: flex; gap: 8px; flex-wrap: wrap; }
.app-nav-btn {
  border: none; background: rgba(255,255,255,.1); color: #eaf3f7;
  padding: 9px 16px; border-radius: 10px; cursor: pointer; font-size: 14px; font-weight: 600;
  transition: .18s;
}
.app-nav-btn:hover { background: rgba(255,255,255,.2); }
.app-nav-btn.active { background: #fff; color: var(--blue-800); box-shadow: var(--shadow-sm); }

/* ---------- Main ---------- */
.app-main { max-width: 860px; margin: 0 auto; padding: 18px clamp(12px, 3vw, 24px) 60px; }

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  align-items: center; margin-bottom: 16px;
}
.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.search {
  padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 14px; min-width: 230px; background: #fff; color: var(--ink);
}
.search:focus { outline: 2px solid var(--turq); border-color: var(--turq); }
.switch { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-soft); cursor: pointer; }
.switch input { width: 16px; height: 16px; accent-color: var(--turq); }
.btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 9px 14px; border-radius: 10px; cursor: pointer; font-size: 13.5px; font-weight: 600;
  transition: .15s;
}
.btn:hover { border-color: var(--turq); color: var(--blue-800); }
.btn.ghost { background: transparent; }
.btn.primary { background: var(--turq); color: #fff; border-color: var(--turq); }
.btn.primary:hover { background: #178a78; color: #fff; }
.btn.small { padding: 6px 11px; font-size: 12.5px; }
.mode-switch { display: inline-flex; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 3px; }
.btn.mode { border: none; background: transparent; border-radius: 8px; }
.btn.mode.active { background: var(--blue-800); color: #fff; }

/* ---------- Flashcard ---------- */
.card-scene { perspective: 1400px; margin: 6px auto 0; }
.card { width: 100%; max-width: 560px; margin: 0 auto; cursor: pointer; }
.card-inner {
  position: relative; width: 100%; min-height: 380px;
  transition: transform .55s cubic-bezier(.4,.2,.2,1); transform-style: preserve-3d;
}
.card.flipped .card-inner { transform: rotateY(180deg); }
.card-face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 26px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
}
.card-front {
  background:
    radial-gradient(700px 320px at 80% -10%, rgba(31,158,138,.35), transparent 60%),
    linear-gradient(160deg, var(--blue-800), var(--blue-700));
  color: #fdfaf3; border: 1px solid rgba(201,162,39,.4);
}
.card-back {
  background: var(--card-ivory); color: var(--ink); transform: rotateY(180deg);
  align-items: stretch; justify-content: flex-start; text-align: left; overflow-y: auto;
}
.pos-tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .5px;
  color: var(--blue-900); background: var(--gold); padding: 3px 10px; border-radius: 999px; text-transform: uppercase;
}
.card-front .pos-tag { background: rgba(255,255,255,.16); color: #ffe9a8; }
.persian-big {
  font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-weight: 700;
  font-size: clamp(46px, 12vw, 86px); line-height: 1.25; margin: 14px 0 6px; color: #fff;
}
.rom { font-size: 22px; color: #ffe9a8; font-weight: 600; letter-spacing: .5px; }
.match-tag { margin-top: 8px; font-size: 12px; opacity: .8; }
.speak-btn {
  margin-top: 16px; border: 1px solid rgba(255,255,255,.5); background: rgba(255,255,255,.12);
  color: #fff; padding: 10px 20px; border-radius: 999px; cursor: pointer; font-size: 15px; font-weight: 600;
  transition: .15s;
}
.speak-btn:hover { background: var(--gold); color: var(--blue-900); border-color: var(--gold); }
.speak-btn.small { margin-top: 0; padding: 6px 12px; font-size: 13px; border-color: var(--line); background: var(--turq-soft); color: var(--blue-800); }
.flip-hint { margin-top: 14px; font-size: 12.5px; opacity: .7; }

/* card back */
.back-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 2px solid var(--line); padding-bottom: 12px; margin-bottom: 12px; }
.back-word { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.persian-sm { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 34px; font-weight: 700; color: var(--blue-800); }
.rom-sm { font-size: 18px; color: var(--turq); font-weight: 600; }
.meaning-block, .scenario-block, .examples-block { margin-bottom: 14px; }
.label { font-size: 12px; font-weight: 800; letter-spacing: .4px; color: var(--blue-700); text-transform: uppercase; margin-bottom: 5px; }
.meaning { font-size: 18px; font-weight: 600; }
.scenario { font-size: 14.5px; line-height: 1.6; color: var(--ink-soft); }
.examples { margin: 0; padding-left: 4px; list-style: none; }
.examples li { margin-bottom: 16px; border-bottom: 1px dashed var(--line); padding-bottom: 12px; }
.examples li:last-child { border-bottom: none; }
.ex-top { display: flex; align-items: center; gap: 10px; justify-content: flex-end; }
.ex-fa { flex: 1; font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 20px; font-weight: 600; color: var(--blue-800); direction: rtl; text-align: right; }
.ex-speak {
  flex: 0 0 auto; width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--turq); background: var(--turq-soft); color: var(--blue-800);
  cursor: pointer; font-size: 13px; display: grid; place-items: center; transition: .15s;
}
.ex-speak:hover { background: var(--turq); color: #fff; }
.ex-rom { display: block; font-size: 14px; color: var(--turq); margin: 4px 0 1px; padding-right: 42px; direction: rtl; text-align: right; }
.ex-en { display: block; font-size: 13.5px; color: var(--ink-soft); padding-right: 42px; }

/* Teacher's tip block on card back */
.tip-block { margin-bottom: 14px; background: var(--gold-soft); border: 1px solid #ecd9a0; border-radius: 12px; padding: 12px 14px; }
.tip-block .label { color: #8a6d12; }
.tip { font-size: 14px; line-height: 1.6; color: #5a4a12; }

/* ---------- Card controls ---------- */
.card-controls { display: flex; justify-content: center; gap: 10px; margin-top: 16px; }
.card-meta { display: flex; justify-content: center; align-items: center; gap: 14px; margin-top: 12px; }
.btn.star { color: var(--gold); border-color: var(--gold); }
.btn.star.on { background: var(--gold); color: #fff; }
.counter { font-size: 13px; color: var(--ink-soft); font-weight: 600; }

/* ---------- Progress ---------- */
.progress-section { margin-top: 22px; }
.progress-bar { height: 10px; background: #fff; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--turq), var(--gold)); transition: width .4s; }
.progress-text { text-align: center; font-size: 12.5px; color: var(--ink-soft); margin-top: 6px; }

/* ---------- Quiz ---------- */
.quiz-card {
  max-width: 560px; margin: 6px auto 0; background: var(--card-ivory); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px;
}
.quiz-progress { font-size: 13px; color: var(--ink-soft); margin-bottom: 14px; font-weight: 600; }
.quiz-question { text-align: center; margin-bottom: 18px; }
.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.quiz-opt {
  border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 13px;
  cursor: pointer; font-size: 15px; font-weight: 600; text-align: center; transition: .15s;
}
.quiz-opt:hover { border-color: var(--turq); }
.quiz-opt.correct { background: #d8f1e9; border-color: var(--turq); color: #0c5b4c; }
.quiz-opt.wrong { background: #fbe0e0; border-color: #d9534f; color: #a02c2c; }
.quiz-feedback { margin-top: 14px; font-size: 14px; line-height: 1.6; min-height: 22px; text-align: center; }
.quiz-feedback.ok { color: #0c5b4c; }
.quiz-feedback.no { color: #a02c2c; }
.quiz-controls { text-align: center; margin-top: 12px; }

/* ---------- Annotator ---------- */
.annotate-card { background: var(--card-ivory); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }
.annotate-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.annotate-title { margin: 0; font-size: 19px; color: var(--blue-800); }
.head-actions { display: flex; gap: 8px; }
.anno-config-btn, .anno-edit-btn { border: 1px solid var(--line); background: #fff; border-radius: 9px; padding: 7px 12px; font-size: 12.5px; cursor: pointer; font-weight: 600; color: var(--ink-soft); }
.anno-config-btn:hover, .anno-edit-btn:hover { border-color: var(--turq); color: var(--blue-800); }
.config-panel { background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 14px; }
.config-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.config-input { width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; font-size: 13px; margin-top: 6px; }
.config-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.config-on { font-size: 12.5px; font-weight: 700; color: var(--turq); }
.config-sub { font-weight: 400; font-size: 11px; color: var(--ink-soft); margin-left: 4px; }
.config-hint { font-size: 11.5px; color: var(--ink-soft); line-height: 1.5; margin-top: 8px; }
.config-status { font-size: 12px; margin-top: 6px; min-height: 14px; }
.anno-io { display: flex; flex-direction: column; gap: 12px; }
.anno-input {
  width: 100%; min-height: 130px; padding: 14px; border: 1px solid var(--line); border-radius: 12px;
  font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 19px; line-height: 1.9; resize: vertical;
  background: #fff; color: var(--ink); text-align: right;
}
.anno-input:focus { outline: 2px solid var(--turq); border-color: var(--turq); }
.anno-result {
  border: 1px dashed var(--turq); border-radius: 12px; padding: 16px; background: #fff;
  font-size: 22px; line-height: 2.4; text-align: right; word-spacing: 2px;
}
.ruby { display: inline-block; text-align: center; vertical-align: top; margin: 0 2px; cursor: pointer; border-radius: 6px; padding: 2px 2px 0; }
.ruby:hover { background: var(--turq-soft); }
.ruby .r-rom { display: block; font-size: 12px; color: var(--turq); font-weight: 700; line-height: 1; direction: ltr; }
.ruby .r-fa { display: block; font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 22px; color: var(--blue-800); line-height: 1.3; direction: rtl; }
.ruby.latin .r-fa { direction: ltr; font-family: inherit; font-size: 18px; }
.anno-annotate { width: 100%; margin-top: 14px; padding: 13px; font-size: 15px; }
.anno-settings { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.anno-translate { border-color: var(--gold); color: #8a6d12; }
.anno-translate:hover { background: var(--gold-soft); }
.rate-label { font-size: 12.5px; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 6px; }
.rate-label input { accent-color: var(--turq); }
.anno-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.annotate-stat { margin-top: 12px; font-size: 12.5px; color: var(--ink-soft); min-height: 16px; }
.anno-translation { margin-top: 14px; padding: 14px; border: 1px solid var(--gold); background: var(--gold-soft); border-radius: 12px; font-size: 14px; line-height: 1.6; }

/* ---------- AI Tutor ---------- */
.tutor-shell { background: var(--card-ivory); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; min-height: 70vh; }
.tutor-topbar { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--blue-800); color: #fff; }
.tutor-topbar-title { font-size: 15px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.tutor-topbar-title span { font-size: 11.5px; font-weight: 500; opacity: .8; }
.tutor-topbar-actions { display: flex; align-items: center; gap: 10px; }
.py-toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; cursor: pointer; color: #eaf3f7; }
.py-toggle input { display: none; }
.py-toggle-track { width: 36px; height: 20px; border-radius: 999px; background: rgba(255,255,255,.25); position: relative; transition: .2s; }
.py-toggle-dot { position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: .2s; }
.py-toggle input:checked + .py-toggle-track { background: var(--gold); }
.py-toggle input:checked + .py-toggle-track .py-toggle-dot { transform: translateX(16px); }
.tutor-icon-btn { border: none; background: rgba(255,255,255,.14); color: #fff; width: 34px; height: 34px; border-radius: 9px; cursor: pointer; font-size: 16px; }
.tutor-icon-btn:hover { background: rgba(255,255,255,.28); }

.tutor-hero { padding: 26px; display: flex; flex-direction: column; gap: 14px; flex: 1; justify-content: center; }
.tutor-hero-card { background: linear-gradient(160deg, #fff, var(--paper-2)); border: 1px solid var(--line); border-radius: 16px; padding: 20px; box-shadow: var(--shadow-sm); }
.tutor-hero-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.tutor-hero-badge { background: var(--gold); color: var(--blue-900); font-weight: 800; font-size: 12px; padding: 4px 10px; border-radius: 999px; }
.tutor-hero-tags { font-size: 12px; color: var(--ink-soft); }
.tutor-hero-input { width: 100%; min-height: 92px; border: 1px solid var(--line); border-radius: 12px; padding: 12px; font-size: 14px; font-family: inherit; resize: vertical; }
.tutor-hero-input:focus { outline: 2px solid var(--turq); border-color: var(--turq); }
.tutor-hero-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; gap: 10px; }
.tutor-hero-tip { font-size: 12.5px; color: var(--ink-soft); }
.tutor-hero-send { border: none; background: var(--turq); color: #fff; padding: 11px 22px; border-radius: 999px; font-weight: 700; cursor: pointer; font-size: 14px; }
.tutor-hero-send:hover { background: #178a78; }
.tutor-hero-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.tutor-chip { border: 1px solid var(--turq); color: var(--blue-800); background: var(--turq-soft); border-radius: 999px; padding: 8px 14px; font-size: 13px; cursor: pointer; font-weight: 600; }
.tutor-chip:hover { background: var(--turq); color: #fff; }
.tutor-hero-note { font-size: 12.5px; color: var(--ink-soft); background: var(--paper-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }

.tutor-chat { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.tutor-body { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 14px; max-height: 60vh; }
.msg { max-width: 85%; padding: 12px 15px; border-radius: 14px; font-size: 14.5px; line-height: 1.65; }
.msg.user { align-self: flex-end; background: var(--blue-800); color: #fff; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg .msg-fa { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 19px; font-weight: 700; direction: rtl; text-align: right; display: block; color: var(--blue-800); }
.msg .msg-rom { display: block; font-size: 13.5px; color: var(--turq); direction: rtl; text-align: right; margin: 2px 0 6px; }
.msg .msg-en { display: block; }
.msg .msg-note { display: block; margin-top: 8px; font-size: 11.5px; color: var(--ink-soft); border-top: 1px dashed var(--line); padding-top: 6px; }
.tutor-ask { display: flex; gap: 10px; padding: 12px; border-top: 1px solid var(--line); background: var(--paper-2); }
.tutor-input { flex: 1; border: 1px solid var(--line); border-radius: 12px; padding: 11px 14px; font-size: 14px; resize: none; font-family: inherit; max-height: 120px; }
.tutor-input:focus { outline: 2px solid var(--turq); border-color: var(--turq); }
.tutor-send { border: none; background: var(--turq); color: #fff; width: 46px; border-radius: 12px; font-size: 18px; cursor: pointer; }
.tutor-send:hover { background: #178a78; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--blue-900); color: #fff; padding: 12px 20px; border-radius: 12px;
  font-size: 14px; box-shadow: var(--shadow); z-index: 100; max-width: 90vw;
}

/* ---------- Responsive ---------- */
/* ============ ALPHABET HUB ============ */
.alpha-hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 16px; margin-bottom: 18px; align-items: stretch; }
.alpha-hero-card {
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700) 60%, var(--blue-600));
  color: #fff; border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; justify-content: center;
}
.alpha-hero-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.alpha-hero-badge { background: var(--gold); color: var(--blue-900); font-weight: 800; font-size: 12px; padding: 4px 10px; border-radius: 999px; }
.alpha-hero-tags { font-size: 12px; opacity: .85; }
.alpha-title { margin: 0 0 8px; font-size: 24px; }
.alpha-sub { margin: 0 0 14px; font-size: 13.5px; line-height: 1.6; opacity: .92; }
.alpha-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.ab { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 5px 12px; font-size: 12px; font-weight: 600; }

.alpha-tools { display: grid; grid-template-columns: 1fr; gap: 12px; }
.alpha-tool { text-align: left; border: 1px solid var(--line); background: #fff; border-radius: var(--radius); padding: 14px 16px; cursor: pointer; transition: .15s; display: flex; flex-direction: column; gap: 2px; }
.alpha-tool:hover { border-color: var(--turq); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.alpha-tool.active { border-color: var(--turq); background: var(--turq-soft); }
.alpha-tool-ic { font-size: 22px; }
.alpha-tool-t { font-weight: 700; color: var(--blue-800); font-size: 15px; }
.alpha-tool-d { font-size: 12px; color: var(--ink-soft); }

.alpha-subtabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.alpha-subtab { border: 1px solid var(--line); background: #fff; color: var(--ink-soft); padding: 9px 16px; border-radius: 10px; cursor: pointer; font-size: 14px; font-weight: 600; transition: .15s; }
.alpha-subtab:hover { border-color: var(--turq); color: var(--blue-800); }
.alpha-subtab.active { background: var(--blue-800); color: #fff; border-color: var(--blue-800); }

.alpha-panel { animation: fade .25s ease; }
.alpha-instruction { text-align: center; font-size: 13.5px; color: var(--ink-soft); margin: 0 0 14px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* Letter overview grid */
.letter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(98px, 1fr)); gap: 12px; }
.letter-tile { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 8px 10px; text-align: center; cursor: pointer; transition: .15s; }
.letter-tile:hover { border-color: var(--turq); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.letter-tile:active { transform: scale(.97); }
.lt-ch { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 44px; font-weight: 700; color: var(--blue-800); line-height: 1.05; direction: rtl; }
.lt-name { font-size: 12px; color: var(--turq); font-weight: 700; margin-top: 4px; }
.lt-sample { font-size: 11px; color: var(--ink-soft); margin-top: 2px; direction: rtl; }

/* Forms (writing) table */
.forms-note { background: var(--gold-soft); border: 1px solid #ecd9a0; border-radius: 12px; padding: 12px 14px; font-size: 13px; line-height: 1.65; color: #5a4a12; margin-bottom: 14px; }
.forms-note b { color: #8a6d12; }
.forms-table { display: flex; flex-direction: column; gap: 6px; overflow-x: auto; }
.form-row { display: grid; grid-template-columns: 70px 1fr 1fr 1fr 1fr; gap: 8px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 8px; min-width: 360px; }
.form-row.head { background: transparent; border: none; min-width: 360px; }
.form-row.head span { font-size: 11px; color: var(--ink-soft); font-weight: 700; text-transform: uppercase; text-align: center; }
.fr-name { font-weight: 700; color: var(--blue-800); text-align: center; cursor: pointer; font-size: 15px; line-height: 1.1; }
.fr-name small { display: block; font-size: 10px; color: var(--ink-soft); font-weight: 500; margin-top: 2px; }
.form-cell { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 34px; font-weight: 700; color: var(--blue-800); text-align: center; direction: rtl; border-radius: 8px; padding: 4px 2px; cursor: pointer; transition: .12s; }
.form-cell:hover { background: var(--turq-soft); }
.form-cell.dim { color: var(--ink-soft); font-size: 14px; font-weight: 500; }

/* Numbers grid + rules */
.number-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 12px; }
.number-tile { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 8px; text-align: center; cursor: pointer; transition: .15s; }
.number-tile:hover { border-color: var(--turq); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.number-tile:active { transform: scale(.97); }
.nt-num { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; font-size: 40px; font-weight: 700; color: var(--blue-800); line-height: 1.05; direction: rtl; }
.nt-rom { font-size: 13px; color: var(--turq); font-weight: 700; margin-top: 4px; }
.nt-en { font-size: 11px; color: var(--ink-soft); }
.rules { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 20px; }
.rule-card { background: var(--paper-2); border: 1px solid var(--line); border-right: 4px solid var(--turq); border-radius: 12px; padding: 14px; }
.rule-card h4 { margin: 0 0 6px; color: var(--blue-800); font-size: 15px; }
.rule-card p { margin: 0 0 8px; font-size: 13px; color: var(--ink-soft); line-height: 1.5; }
.rule-ex { display: flex; flex-wrap: wrap; gap: 8px; }
.rule-ex span { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 4px 9px; font-size: 12.5px; color: var(--ink-soft); }
.rule-ex .re-num { font-family: "Noto Naskh Arabic", "Vazirmatn", serif; color: var(--blue-800); font-weight: 700; font-size: 15px; }

@media (max-width: 760px) {
  .alpha-hero { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .quiz-options { grid-template-columns: 1fr; }
  .brand-text p { display: none; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search { min-width: 0; width: 100%; }
  .persian-big { font-size: clamp(40px, 16vw, 64px); }
  .letter-grid { grid-template-columns: repeat(auto-fill, minmax(78px, 1fr)); }
  .lt-ch { font-size: 36px; }
  .number-grid { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); }
  .nt-num { font-size: 32px; }
  .form-cell { font-size: 28px; }
}