/* =========================================================================
   Learn German With Reza — Design System
   بر پایهٔ زبان طراحی WoSpielen: Material 3 Expressive، روشن و رنگی،
   شکل‌های گرد بزرگ، گرادیان‌های پرانرژی — تطبیق‌یافته برای فارسی (RTL).
   ========================================================================= */

:root{
  /* ---- Material 3 colour roles (same palette as WoSpielen) ---- */
  --primary:#0E9F6E;            /* emerald green */
  --on-primary:#FFFFFF;
  --primary-container:#BBF7D0;
  --on-primary-container:#04341F;

  --secondary:#2563EB;          /* electric blue */
  --on-secondary:#FFFFFF;
  --secondary-container:#DBEAFE;
  --on-secondary-container:#0B2B6B;

  --tertiary:#F97316;           /* energetic orange */
  --on-tertiary:#FFFFFF;
  --tertiary-container:#FFE4CC;
  --on-tertiary-container:#5A2400;

  --pink:#EC4899; --violet:#7C3AED; --yellow:#F59E0B; --cyan:#06B6D4;
  --error:#E11D48; --success:#16A34A;

  /* ---- Gender colours (WortSchatz convention) ---- */
  --der:#2563EB; --die:#EC4899; --das:#16A34A;

  /* ---- Surfaces ---- */
  --bg:#F4F8F4;
  --bg-2:#EAF2EC;
  --surface:#FFFFFF;
  --surface-1:#F7FAF6;
  --surface-2:#EEF3EC;
  --surface-3:#E6EEE6;
  --line:#D8E0D7;
  --line-soft:#E9EFE7;

  --ink:#101814;
  --ink-2:#4A5550;
  --ink-3:#7A857F;

  --grad:linear-gradient(125deg,#0E9F6E 0%, #22C55E 42%, #06B6D4 100%);
  --grad-warm:linear-gradient(125deg,#F97316 0%, #EC4899 100%);
  --grad-cool:linear-gradient(125deg,#2563EB 0%, #7C3AED 100%);
  --grad-sun:linear-gradient(125deg,#F59E0B 0%, #F97316 100%);

  --radius:26px; --radius-sm:16px; --radius-lg:36px; --radius-pill:999px;
  --shadow:0 12px 34px -16px rgba(16,60,40,.30);
  --shadow-lg:0 24px 60px -24px rgba(16,60,40,.40);
  --shadow-glow:0 10px 30px -10px rgba(14,159,110,.45);

  --maxw:1200px;
  --font-display:'Vazirmatn','Fredoka',-apple-system,system-ui,sans-serif;
  --font:'Vazirmatn',-apple-system,system-ui,Segoe UI,Tahoma,sans-serif;
  --font-latin:'Inter',-apple-system,system-ui,sans-serif;
  --ease:cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font); font-size:16px; line-height:1.9; -webkit-font-smoothing:antialiased;
  direction:rtl;
  background-image:
    radial-gradient(680px 460px at 12% -8%, rgba(37,99,235,.10), transparent 60%),
    radial-gradient(620px 420px at 106% 4%, rgba(14,159,110,.14), transparent 58%),
    radial-gradient(560px 500px at 40% 110%, rgba(249,115,22,.10), transparent 60%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.35;margin:0 0 .4em}
h1{font-size:clamp(1.9rem,5vw,3.2rem)}
h2{font-size:clamp(1.4rem,3vw,2.1rem)}
h3{font-size:1.25rem}
p{margin:0 0 1rem}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--ink-2)} .dim{color:var(--ink-3)}
.center{text-align:center}
section{padding:52px 0}

/* ---- German / Latin text is always LTR ---- */
.de{direction:ltr;unicode-bidi:isolate;font-family:var(--font-latin);font-weight:600}
.de-block{direction:ltr;text-align:left;font-family:var(--font-latin)}
.g-der{color:var(--der)} .g-die{color:var(--die)} .g-das{color:var(--das)}

/* ---------- Top app bar ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);
  background:rgba(244,248,244,.85);border-bottom:1px solid var(--line-soft)}
.nav-inner{display:flex;align-items:center;gap:16px;height:72px;direction:ltr}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);
  font-weight:800;font-size:1.2rem;color:var(--ink);flex:none}
.brand .mark{width:46px;height:46px;display:grid;place-items:center;flex:none}
.brand .mark img{width:100%;height:100%;object-fit:contain;
  filter:drop-shadow(0 3px 7px rgba(6,182,212,.3))}
.brand b{color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:16px;flex:1}
.nav-links{display:flex;gap:2px}
.nav-links a{padding:10px 15px;border-radius:var(--radius-pill);color:var(--ink-2);font-weight:600;font-size:.95rem;transition:.18s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--on-primary-container);background:var(--primary-container)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;direction:rtl}
.nav-toggle{display:none;background:var(--surface-2);border:1px solid var(--line);color:var(--ink);
  width:46px;height:46px;border-radius:14px;font-size:1.3rem;cursor:pointer;margin-left:auto;flex:none}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid transparent;cursor:pointer;
  font-family:var(--font-display);font-weight:700;font-size:.96rem;
  padding:12px 22px;border-radius:var(--radius-pill);transition:.18s var(--ease);white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--primary);color:var(--on-primary);box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.05);box-shadow:var(--shadow-lg)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--primary-container);border-color:var(--primary-container);color:var(--on-primary-container)}
.btn-cool{background:var(--secondary-container);color:var(--on-secondary-container)}
.btn-warm{background:var(--grad-warm);color:#fff;box-shadow:0 10px 26px -12px rgba(236,72,153,.6)}
.btn-tonal{background:var(--primary-container);color:var(--on-primary-container)}
.btn-sm{padding:8px 16px;font-size:.84rem}
.btn-lg{padding:15px 28px;font-size:1.05rem}
.btn-block{width:100%}

/* ---------- Chips / tags ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;
  padding:5px 12px;border-radius:var(--radius-pill);background:var(--surface-2);color:var(--ink-2);
  border:1px solid var(--line)}
.tag-lime{background:var(--primary-container);color:var(--on-primary-container);border-color:transparent}
.tag-blue{background:var(--secondary-container);color:var(--on-secondary-container);border-color:transparent}
.tag-warm{background:var(--tertiary-container);color:var(--on-tertiary-container);border-color:transparent}
.tag-pink{background:#FCE7F3;color:#9D174D;border-color:transparent}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 44px;overflow:hidden}
.hero .eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-display);
  font-weight:700;font-size:.82rem;color:var(--on-primary-container);
  padding:8px 16px;border-radius:var(--radius-pill);margin-bottom:22px;background:var(--primary-container)}
.hero h1 .stroke{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.15rem;color:var(--ink-2);max-width:60ch}
.hero-stats{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.hero-stats .stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 20px;box-shadow:var(--shadow)}
.stat .n{font-family:var(--font-display);font-size:1.9rem;font-weight:800;color:var(--primary);line-height:1.3}
.stat .l{font-size:.8rem;color:var(--ink-3);font-weight:600}

/* ---------- Inputs ---------- */
.field-row{display:flex;flex-direction:column;gap:7px;margin-bottom:18px}
.field-row label{font-weight:600;font-size:.9rem;color:var(--ink-2)}
input[type=text],input[type=email],input[type=password],input[type=search],input[type=number],select,textarea{
  width:100%;background:var(--surface-1);border:1.5px solid var(--line);border-radius:14px;
  color:var(--ink);padding:12px 15px;font-size:1rem;font-family:var(--font);outline:none;transition:.15s var(--ease)}
input:focus,select:focus,textarea:focus{border-color:var(--primary);background:var(--surface);box-shadow:0 0 0 4px var(--primary-container)}
.help{font-size:.82rem;color:var(--ink-3)}
.errorlist{list-style:none;margin:6px 0 0;padding:0;color:var(--error);font-size:.85rem}

/* ---------- Cards / grid ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.2s var(--ease);display:flex;flex-direction:column}
a.card:hover,.card.hov:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}

/* level card */
.level-card .media{height:110px;display:grid;place-items:center;background:var(--grad);
  font-family:var(--font-latin);font-weight:800;font-size:2.4rem;color:#fff;letter-spacing:.02em}
.level-card:nth-child(3n+2) .media{background:var(--grad-warm)}
.level-card:nth-child(3n) .media{background:var(--grad-cool)}
.level-card h3{margin:0}
.level-card .meta{color:var(--ink-2);font-size:.9rem}

/* progress bar */
.bar-track{height:10px;background:var(--surface-2);border-radius:var(--radius-pill);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--radius-pill);background:var(--grad)}
.bar-line{display:flex;align-items:center;gap:10px}
.bar-line .pct{font-weight:800;font-size:.85rem;color:var(--primary);min-width:38px}

/* topic / lesson list rows */
.list-row{display:flex;align-items:center;gap:14px;padding:14px 6px;border-bottom:1px solid var(--line-soft);
  border-radius:14px;transition:.15s var(--ease)}
.list-row:hover{background:var(--surface-1)}
.list-row:last-child{border-bottom:none}
.list-row .lr-ic{width:46px;height:46px;border-radius:14px;background:var(--surface-2);display:grid;place-items:center;font-size:1.2rem;flex:none;font-weight:800;font-family:var(--font-latin)}
.list-row .lr-main{flex:1;min-width:0}
.list-row .lr-main b{display:block}
.list-row .lr-main .sub{color:var(--ink-3);font-size:.85rem}

/* ---------- Word cards (WortSchatz style) ---------- */
.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.word-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 16px;transition:.18s var(--ease);border-right:5px solid var(--line)}
.word-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.word-card.g-der{border-right-color:var(--der)} .word-card.g-die{border-right-color:var(--die)} .word-card.g-das{border-right-color:var(--das)}
.word-card .w-de{font-family:var(--font-latin);font-weight:700;font-size:1.12rem;direction:ltr;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:8px}
.word-card .w-pl{direction:ltr;text-align:left;color:var(--ink-3);font-size:.82rem;font-family:var(--font-latin)}
.word-card .w-fa{margin-top:4px;color:var(--ink-2)}
.word-card .w-ex{margin-top:6px;padding-top:6px;border-top:1px dashed var(--line-soft);font-size:.84rem}

/* say (TTS) button */
.say{background:var(--surface-2);border:none;border-radius:50%;width:32px;height:32px;cursor:pointer;
  display:inline-grid;place-items:center;font-size:.95rem;flex:none;transition:.15s var(--ease)}
.say:hover{background:var(--primary-container)}

/* ---------- Grammar lesson (prose) ---------- */
.prose{max-width:78ch;font-size:1.05rem}
.prose h2{margin-top:1.6rem;font-size:1.45rem}
.prose .g-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem;direction:ltr}
.prose .g-table th,.prose .g-table td{border:1px solid var(--line);padding:8px 12px;text-align:center;font-family:var(--font-latin)}
.prose .g-table th{background:var(--primary-container);color:var(--on-primary-container);font-weight:700}
.prose .g-table tr:nth-child(even) td{background:var(--surface-1)}
.example{display:flex;flex-direction:column;gap:4px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:10px}
.example .ex-de{direction:ltr;text-align:left;font-family:var(--font-latin);font-weight:600;font-size:1.05rem;display:flex;align-items:center;gap:8px;justify-content:space-between}
.example .ex-fa{color:var(--ink-2)}
.example .ex-note{font-size:.82rem;color:var(--primary);font-weight:600}
.callout{border-radius:var(--radius-sm);padding:16px 18px;margin:14px 0}
.callout.usage{background:var(--secondary-container);color:var(--on-secondary-container)}
.callout.tips{background:var(--tertiary-container);color:var(--on-tertiary-container)}
.callout b.t{display:block;margin-bottom:6px}
.callout ul{margin:0;padding-right:1.2rem}
.callout li{margin-bottom:.4rem}

/* ---------- Reading ---------- */
.read-text{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 30px;direction:ltr;text-align:left;font-family:var(--font-latin);font-size:1.15rem;line-height:2;box-shadow:var(--shadow)}
.glossary-row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line-soft)}
.glossary-row .g-de{direction:ltr;font-family:var(--font-latin);font-weight:600}

/* ---------- Flashcards review ---------- */
.fc-stage{max-width:620px;margin:0 auto}
.fc-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:34px;box-shadow:var(--shadow-lg);cursor:pointer;text-align:center;transition:.2s var(--ease)}
.fc-card .de{font-size:1.7rem;font-weight:700}
.fc-card .fa-big{font-size:1.3rem;font-weight:700}
.fc-card .sub{color:var(--ink-2);font-size:.95rem}
.fc-card .sub.ex{margin-top:6px}
.fc-hint{color:var(--ink-3);font-size:.85rem;text-align:center;margin-top:10px}
.fc-grades{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px}
.fc-grades .btn{flex-direction:column;gap:2px;padding:12px 8px;border-radius:18px}
.fc-grades .iv{font-size:.72rem;opacity:.75;font-weight:600}
.g-again{background:#FFE4E6;color:#9F1239}
.g-hard{background:var(--tertiary-container);color:var(--on-tertiary-container)}
.g-good{background:var(--secondary-container);color:var(--on-secondary-container)}
.g-easy{background:var(--primary-container);color:var(--on-primary-container)}
.fc-progress{display:flex;justify-content:space-between;color:var(--ink-3);font-size:.85rem;margin-bottom:12px}

/* ---------- Quiz ---------- */
.quiz-stage{max-width:680px;margin:0 auto}
.q-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.q-q{font-size:1.15rem;font-weight:700;margin-bottom:18px}
.q-opts{display:flex;flex-direction:column;gap:10px}
.q-opt{text-align:right;background:var(--surface-1);border:1.5px solid var(--line);border-radius:14px;
  padding:13px 16px;font-size:1rem;font-family:var(--font);cursor:pointer;transition:.15s var(--ease)}
.q-opt:hover{border-color:var(--primary)}
.q-opt.correct{background:var(--primary-container);border-color:var(--primary);color:var(--on-primary-container);font-weight:700}
.q-opt.wrong{background:#FFE4E6;border-color:var(--error);color:#9F1239}
.q-opt:disabled{cursor:default}
.q-explain{margin-top:14px;padding:12px 16px;border-radius:14px;background:var(--surface-2);font-size:.92rem}
.q-explain.ok{background:var(--primary-container);color:var(--on-primary-container)}
.q-explain.no{background:#FFE4E6;color:#9F1239}
.q-fill input{direction:ltr;text-align:left;font-family:var(--font-latin);font-size:1.1rem}
.q-score{font-family:var(--font-display);font-size:3rem;font-weight:800;color:var(--primary)}

/* ---------- Stat tiles / dashboard ---------- */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow)}
.tile .n{font-family:var(--font-display);font-size:2rem;font-weight:800;line-height:1.4}
.tile .l{color:var(--ink-3);font-size:.85rem;margin-top:4px;font-weight:600}
.tile.accent{background:var(--primary-container);border-color:transparent}
.tile.accent .n{color:var(--on-primary-container)}
.tile.warm{background:var(--tertiary-container);border-color:transparent}
.tile.warm .n{color:var(--on-tertiary-container)}
.tile.cool{background:var(--secondary-container);border-color:transparent}
.tile.cool .n{color:var(--on-secondary-container)}
.tile.pinky{background:#FCE7F3;border-color:transparent}
.tile.pinky .n{color:#9D174D}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.panel h3{margin-top:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.sec-head .kicker{font-family:var(--font-display);font-size:.85rem;color:var(--primary);font-weight:700;margin-bottom:6px}
.sec-head h2{margin:0}

/* activity chart */
.act-chart{display:flex;align-items:flex-end;gap:6px;height:120px}
.act-chart .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;height:100%;gap:4px;text-align:center}
.act-chart .b{background:var(--grad);border-radius:8px 8px 4px 4px;min-height:3px;transition:.3s var(--ease)}
.act-chart .d{font-size:.6rem;color:var(--ink-3)}

/* ---------- Verbs table ---------- */
.verb-table{width:100%;border-collapse:collapse;font-size:.92rem;direction:ltr}
.verb-table th{background:var(--primary-container);color:var(--on-primary-container);padding:10px 12px;text-align:left;font-family:var(--font-latin)}
.verb-table td{padding:10px 12px;border-bottom:1px solid var(--line-soft);font-family:var(--font-latin);text-align:left}
.verb-table td.fa-cell{direction:rtl;text-align:right;font-family:var(--font)}
.verb-table tr:hover td{background:var(--surface-1)}
.verb-table tr.sein td{background:#FFF7ED}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:8px 16px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--surface);
  font-size:.85rem;font-weight:600;color:var(--ink-2);cursor:pointer;transition:.18s var(--ease)}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- انتخاب درس برای مرور/آزمون گروهی ---------- */
.pick{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;
  border-top:1px solid var(--line-soft);font-size:.82rem;font-weight:700;color:var(--ink-3);
  cursor:pointer;user-select:none;transition:.15s var(--ease)}
.pick:hover{background:var(--surface-1);color:var(--primary)}
.pick input{display:none}
.pick-box{width:20px;height:20px;border-radius:7px;border:2px solid var(--line);display:grid;
  place-items:center;font-size:.72rem;font-weight:900;color:transparent;transition:.15s var(--ease);
  background:var(--surface);flex:none}
.pick input:checked + .pick-box{background:var(--primary);border-color:var(--primary);color:#fff}
.card.picked{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-container)}
.card.picked .pick{color:var(--primary);background:var(--primary-container)}

/* ---------- Alerts / auth / misc ---------- */
.messages{position:fixed;top:84px;left:22px;z-index:90;display:flex;flex-direction:column;gap:10px;max-width:360px}
.alert{padding:14px 18px;border-radius:16px;border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow-lg);font-weight:500;animation:slidein .35s var(--ease)}
.alert.success{border-color:transparent;background:var(--primary-container);color:var(--on-primary-container)}
.alert.error{border-color:transparent;background:#FFE4E6;color:#9F1239}
@keyframes slidein{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:none}}

.auth-wrap{max-width:460px;margin:50px auto;padding:0 22px}
.auth-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px;box-shadow:var(--shadow-lg)}

.empty{text-align:center;padding:60px 20px;color:var(--ink-3)}
.empty .em{font-size:3.2rem;margin-bottom:12px}

.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin:30px 0 6px;flex-wrap:wrap}
.pager-info{color:var(--ink-2);font-weight:600;font-size:.92rem}
.pager .is-disabled{opacity:.4;pointer-events:none}

footer.site{border-top:1px solid var(--line-soft);background:var(--bg-2);padding:34px 0 26px;margin-top:40px}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--ink-3);font-size:.85rem}

.flex{display:flex;gap:12px}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}
.between{justify-content:space-between}.gap-sm{gap:8px}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.mt-2{margin-top:18px}.mt-4{margin-top:32px}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-2,.grid-3,.grid-4,.tiles{grid-template-columns:1fr}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:grid;place-items:center}
  .nav-menu{display:none;position:absolute;top:72px;right:0;left:0;flex-direction:column;align-items:stretch;gap:6px;
    direction:rtl;background:var(--surface);border-bottom:1px solid var(--line);padding:14px;box-shadow:var(--shadow-lg)}
  .nav-menu.open{display:flex}
  .nav-links{flex-direction:column;gap:2px}
  .nav-links a{padding:13px 14px;font-size:1.05rem}
  .nav-actions{margin-left:0;flex-direction:column;align-items:stretch;gap:8px;border-top:1px solid var(--line-soft);padding-top:10px}
  .nav-actions .btn{width:100%}
  .fc-grades{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .container{padding:0 16px}
  section{padding:40px 0}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .word-grid{grid-template-columns:1fr}
  .read-text{padding:20px;font-size:1.05rem}
}

/* ==================== کتاب: Deutschland entdecken ==================== */
.book-cover{background:var(--grad-cool);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);position:relative}
.book-cover::after{content:'';position:absolute;inset:0;
  background:radial-gradient(600px 300px at 85% 20%, rgba(255,255,255,.18), transparent 60%)}
.book-cover-inner{padding:44px 40px;position:relative;z-index:1}
.book-cover h1{font-family:var(--font-latin);font-weight:800;font-size:clamp(2rem,5vw,3.4rem);
  line-height:1.1;margin:14px 0 10px}
.book-cover .hero-stats .stat{background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.28);box-shadow:none;backdrop-filter:blur(4px)}
.book-cover .hero-stats .stat .n{color:#fff}
.book-cover .hero-stats .stat .l{color:rgba(255,255,255,.85)}

.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.book-card{display:flex;align-items:center;gap:12px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;
  transition:.18s var(--ease)}
.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:transparent}
.book-card .bc-num{width:38px;height:38px;border-radius:12px;background:var(--surface-2);
  display:grid;place-items:center;font-family:var(--font-latin);font-weight:800;flex:none}
.book-card.is-read .bc-num{background:var(--primary-container);color:var(--on-primary-container)}
.book-card .bc-title{flex:1;font-size:.9rem;font-weight:600;direction:ltr;text-align:left;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-card .bc-meta{display:flex;align-items:center;gap:6px;flex:none}
.book-card .bc-check{color:var(--primary);font-weight:800}

.book-reader{max-width:820px}
.book-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:8px}
.book-page{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(24px,5vw,54px);box-shadow:var(--shadow)}
.bp-head{border-bottom:2px solid var(--line-soft);padding-bottom:18px;margin-bottom:26px}
.bp-kapitel{font-family:var(--font-latin);font-size:.8rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--primary)}
.bp-head h1{font-family:var(--font-latin);text-align:left;font-size:clamp(1.5rem,3.4vw,2.2rem);
  line-height:1.25;margin:8px 0 12px}
.book-prose{direction:ltr;text-align:left;font-family:var(--font-latin);
  font-size:1.13rem;line-height:1.95;color:var(--ink)}
.book-prose p{margin:0 0 1.15em}
.book-prose h2{font-family:var(--font-latin);font-size:1.25rem;margin:1.6em 0 .6em;text-align:left}
.book-prose > p:first-of-type::first-letter{font-size:3.1em;font-weight:800;float:left;
  line-height:.85;padding:4px 10px 0 0;color:var(--primary);font-family:var(--font-latin)}
.book-prose strong{color:var(--on-primary-container);background:var(--primary-container);
  padding:0 4px;border-radius:5px;font-weight:700}
.book-prose ::selection{background:var(--secondary-container)}
.book-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;
  margin-top:22px;flex-wrap:wrap}

.word-pop{position:fixed;z-index:120;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow-lg);padding:14px 16px;direction:rtl}
.word-pop .wp-word{direction:ltr;text-align:left;font-weight:800;font-size:1.15rem;
  display:flex;align-items:center;gap:8px;border-bottom:1px dashed var(--line-soft);
  padding-bottom:8px;margin-bottom:8px}
.word-pop .wp-item{display:flex;flex-direction:column;gap:2px;padding:7px 0;
  border-bottom:1px solid var(--line-soft)}
.word-pop .wp-item:last-child{border-bottom:none}
.word-pop .wp-de{font-size:.95rem;color:var(--ink-2)}
.word-pop .wp-fa{font-weight:700}
.word-pop .wp-extra{font-size:.8rem;color:var(--ink-3)}
.word-pop .wp-meta{font-size:.72rem;color:var(--primary);font-weight:700}
.word-pop .wp-none{font-size:.85rem;color:var(--ink-3)}