/* ==== Language-wide fonts (applies to ALL descendants) ==== */
body.lang-fa { font-family:"Vazirmatn","Tahoma",sans-serif !important; letter-spacing:0 !important; }
body.lang-fa *{ font-family:"Vazirmatn","Tahoma",sans-serif !important; }

body.lang-en { font-family:Inter,"IBM Plex Mono",system-ui,sans-serif !important; }
body.lang-en *{ font-family:Inter,"IBM Plex Mono",system-ui,sans-serif !important; }

/* ================== Base theme ================== */
:root{
  --bg:#0e0f12; --card:#16181d; --card-2:#1b1e24; --text:#e7e7ea; --muted:#a7adbb;
  --accent:#5b9dff; --accent-2:#7a5bff; --ring:0 0 0 3px rgba(91,157,255,.35);
  /* code-view mapping */
  --panel: var(--card,#16181d); --panel-2: var(--card-2,#1b1e24); --border: rgba(255,255,255,.06);
  /* Prism gutter */
  --gutter-width:3em; --gutter-gap:-3em; --separator-space:0em;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f8fafc; --card:#ffffff; --card-2:#f1f5f9; --text:#0b1020; --muted:#475569;
    --accent:#1d4ed8; --accent-2:#7c3aed; --ring:0 0 0 3px rgba(29,78,216,.2);
    --panel: var(--card,#fff); --panel-2: var(--card-2,#f1f5f9); --border: rgba(0,0,0,.08);
  }
}

*{ box-sizing:border-box }
html,body{ height:100% }

body{
  margin:0; background:var(--bg); color:var(--text);
  font-family: Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial,"Noto Sans","IBM Plex Mono",sans-serif;
}
/* fixed gradient layer */
html::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(123,92,255,.25), transparent),
    radial-gradient(1000px 500px at 110% 20%, rgba(91,157,255,.25), transparent);
  background-repeat:no-repeat; background-attachment:fixed;
}

.container{
  min-height:100%; max-width:980px; margin-inline:auto; padding:40px 20px;
  display:flex; flex-direction:column; gap:32px;
}

.hero{ text-align:center; }
.hero h1{ margin:30px 0 6px; font-size:clamp(28px,4vw,40px); letter-spacing:.3px; }
.subtitle{ margin:0; color:var(--muted); font-size:clamp(14px,2.5vw,16px); }

.grid{ display:grid; gap:16px; grid-template-columns:repeat(2,minmax(0,1fr)); }
@media (max-width:600px){ .grid{ grid-template-columns:1fr; } }

.card{
  appearance:none; border:0; background:linear-gradient(180deg,var(--card),var(--card-2));
  color:inherit; border-radius:16px; padding:24px 20px; cursor:pointer;
  display:flex; align-items:center; gap:14px;
  transition: transform .15s ease, box-shadow .15s ease, background .2s ease;
  box-shadow:0 6px 22px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.04);
  outline:none; position:relative; overflow:hidden;
}
.card:hover{ transform: translateY(-2px); }
.card:focus-visible{ box-shadow: var(--ring); }

.icon{
  width:42px; height:42px; border-radius:10px; display:grid; place-items:center;
  font-weight:700; font-size:22px; color:#fff;
  background: linear-gradient(135deg,var(--accent),var(--accent-2));
}
.label{ font-size:18px; font-weight:700; letter-spacing:.2px; }

.foot{ margin-top:auto; display:flex; justify-content:center; color:var(--muted); font-size:13px; }

/* ===== Floating language toggle (dir-aware) ===== */
.lang-float{
  position:fixed; z-index:1000;
  bottom: calc(env(safe-area-inset-bottom,0px) + 20px);
  /* default logical placement; set per dir below */
  inset-inline-start:auto; inset-inline-end:auto;
  border:none; border-radius:50%; width:54px; height:54px;
  font-weight:700; font-family:inherit; color:#fff;
  background:rgba(255,255,255,.12); backdrop-filter: blur(12px);
  box-shadow:0 8px 25px rgba(0,0,0,.4); cursor:pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.lang-float:hover{ transform:scale(1.05) translateY(-2px); background:linear-gradient(135deg,var(--accent),var(--accent-2)); box-shadow:0 8px 30px rgba(91,157,255,.4); }
.lang-float:focus-visible{ outline:none; box-shadow:var(--ring); }
/* place by direction */
html[dir="rtl"] .lang-float{ inset-inline-end:20px; }
html[dir="ltr"] .lang-float{ inset-inline-start:20px; }

/* ===== Back Button (always inside, dir-aware) ===== */
.back-btn{
  position:absolute; top:24px;
  inset-inline-start:auto; inset-inline-end:auto; /* reset */
  padding:10px 18px; border-radius:12px; border:none;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff; font-weight:600; font-size:15px; font-family:inherit; cursor:pointer;
  box-shadow:0 5px 20px rgba(0,0,0,.35);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.back-btn:hover{ transform:translateY(-1px); box-shadow:0 8px 24px rgba(91,157,255,.4); }
.back-btn:focus-visible{ outline:none; box-shadow:var(--ring); }
/* desktop placement inside container by dir */
html[dir="ltr"] .back-btn{ inset-inline-start:12px; }

/* ===== Page transitions ===== */
#page{ will-change: opacity, transform; opacity:0; transform:translateY(10px); }
#page.page-enter{ opacity:1; transform:none; transition:opacity .35s ease, transform .35s ease; }
#page.page-exit{ opacity:0; transform:translateY(10px); transition:opacity .28s ease, transform .28s ease; }

/* cards delayed entrance */
.card{ opacity:0; transform:translateY(8px); filter:blur(2px); }
#page.page-enter .card{
  opacity:1; transform:none; filter:blur(0);
  transition: opacity .45s ease, transform .45s ease; transition-delay: var(--delay,0ms);
}

/* ===== Content Section ===== */
.content-card{
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border-radius:16px; padding:28px 24px; line-height:1.2; font-size:17px; color:var(--text);
  box-shadow:0 6px 20px rgba(0,0,0,.25); white-space:pre-wrap; animation:fadeIn .6s ease forwards;
}
.content-card h2{ margin-top:0; font-size:20px; color:var(--accent); }
@keyframes fadeIn{ from{ opacity:0; transform:translateY(10px);} to{ opacity:1; transform:translateY(0);} }

/* ===== Algorithm boxes ===== */
.algorithm-boxes{ display:flex; flex-direction:column; gap:24px; perspective:1000px; margin-block-start:16px; }
.algo-card{
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border-radius:20px; padding:26px 22px; line-height:1.9; font-size:17px; color:var(--text);
  box-shadow:0 12px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.05);
  transform:rotateX(0deg) translateY(0); transition:transform .3s ease, box-shadow .3s ease;
}
.algo-card:hover{ transform:translateY(-6px) rotateX(3deg); box-shadow:0 20px 40px rgba(0,0,0,.4); }
.algo-header{ display:flex; align-items:center; gap:12px; margin-bottom:8px; }
.algo-number{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff; font-weight:700; font-size:20px; width:42px; height:42px; display:grid; place-items:center;
  border-radius:12px; box-shadow:0 4px 12px rgba(0,0,0,.3);
}
.algo-title{ font-weight:700; font-size:20px; color:var(--accent); }

/* ===== Question card ===== */
.question-card {
  background: linear-gradient(180deg, var(--card), var(--card-2));
  border-radius: 16px;
  padding: 18px 16px;
  line-height: 1.9;
  font-size: 16px;
  color: var(--text);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
  margin-top: 8px;
  white-space: pre-line;
}

/* ===== Numbered steps (RTL/LTR aware) ===== */
.steps{ list-style:none; margin:14px 0 0; padding:0; counter-reset: step; }
.steps > li{
  position:relative; counter-increment: step; padding:14px 22px;
  background:rgba(255,255,255,.02); border-radius:12px; margin-top:10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.03); line-height:1.8;
}
.steps > li::before{
  content: counter(step); position:absolute; top:8px; width:34px; height:34px; border-radius:10px;
  display:grid; place-items:center; font:700 15px "IBM Plex Mono",monospace; color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent-2)); box-shadow:0 4px 12px rgba(0,0,0,.25);
}
html[dir="rtl"] .steps > li::before{ right:-30px; }
html[dir="ltr"] .steps > li::before{ left:-30px; }

.substeps{ margin:8px 0 0 0; padding-inline-start:22px; color:var(--text); }
.substeps li{ margin:4px 0; list-style:disc; }

/* ===== Mermaid center ===== */
#chart{ padding:20px; }
#chart .svg-wrap{ width:100%; display:flex; justify-content:center; align-items:center; }
#chart .svg-wrap svg{ max-width:100%; height:auto; display:block; transform:scale(.95); transform-origin:center; }

/* ================================================================== */
/* ============ 🔒 Landscape Overlay (Mobile Only) ================= */
/* ================================================================== */

/* حالت پایه: همه چی عادی */
.landscape-warning {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text);
  text-align: center;
  padding: 24px;
}

.landscape-warning .lw-card {
  background: linear-gradient(180deg, var(--card), var(--card-2));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 22px 20px;
  max-width: 460px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.lw-title {
  margin: 10px 0 6px;
  font-weight: 800;
  font-size: 18px;
  color: var(--accent);
}

.lw-text {
  margin: 0;
  font-weight: 600;
  color: var(--text);
  opacity: 0.9;
  font-size: 15px;
  line-height: 1.6;
}

.lw-phone {
  width: 86px;
  height: 54px;
  margin: 0 auto 16px; /* فاصله بیشتر از متن */
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.3); /* بردر واضح‌تر */
  position: relative;
  animation: wobble 1.6s ease-in-out infinite;
  background: rgba(255, 255, 255, 0.04); /* پس‌زمینه کمرنگ */
}

.lw-phone-screen {
  position: absolute;
  inset: 5px;
  border-radius: 7px;
  background: rgba(91, 157, 255, 0.15); /* رنگ accent کمرنگ */
  border: 1px solid rgba(91, 157, 255, 0.3);
}

.lw-rotate-arrow {
  position: absolute;
  right: -28px; /* کمی دورتر */
  top: 50%;
  transform: translateY(-50%);
  font-size: 26px; /* بزرگ‌تر */
  opacity: 0.9;
  animation: spin 1.6s linear infinite;
  color: var(--accent); /* رنگ accent */
}

@keyframes spin {
  from { transform: translateY(-50%) rotate(0deg); }
  to { transform: translateY(-50%) rotate(360deg); }
}

@keyframes wobble {
  0%, 100% { transform: rotate(-6deg); }
  50% { transform: rotate(6deg); }
}

/* ================================================================== */
/* ✅ قانون اصلی: فقط موبایل/تبلت لمسی + افقی ≤ 950px */
/* ================================================================== */
@media (max-width: 950px) and (orientation: landscape) {
  /* اگه touch هست (موبایل/تبلت واقعی) */
  @supports (pointer: coarse) {
    .landscape-warning {
      display: flex !important;
    }
    .container,
    .lang-float {
      display: none !important;
    }
    body {
      overflow: hidden !important;
    }
  }

  /* اگه touch نیست ولی عرض کمه (مثل Responsive Mode) */
  @supports not (pointer: coarse) {
    .landscape-warning {
      display: flex !important;
    }
    .container,
    .lang-float {
      display: none !important;
    }
    body {
      overflow: hidden !important;
    }
  }
}

/* ================================================================== */
/* ❌ پرتره (Portrait) → همیشه سایت عادی */
/* ================================================================== */
@media (max-width: 950px) and (orientation: portrait) {
  .landscape-warning {
    display: none !important;
  }
  .container {
    display: flex !important;
  }
  .lang-float {
    display: inline-block !important;
  }
  body {
    overflow: auto !important;
  }
}

/* ================================================================== */
/* ✅ دسکتاپ/لپ‌تاپ (≥ 951px) → همیشه سایت عادی */
/* ================================================================== */
@media (min-width: 951px) {
  .landscape-warning {
    display: none !important;
  }
  .container {
    display: flex !important;
  }
  .lang-float {
    display: inline-block !important;
  }
  body {
    overflow: auto !important;
  }
}

/* ================================================================== */
/* 🌐 متن‌های زبان (FA & EN) */
/* ================================================================== */
body.lang-fa .lw-title::before {
  content: "";
}
body.lang-fa .lw-text::before {
  content: "";
}

body.lang-en .lw-title::before {
  content: "Please rotate your phone";
}
body.lang-en .lw-text::before {
  content: "This page is only available in portrait mode on mobile.";
}

/* ================================================================== */
/* 🎨 احترام به تنظیمات سیستم (کاهش حرکت) */
/* ================================================================== */
@media (prefers-reduced-motion: reduce) {
  .lw-rotate-arrow,
  .lw-phone {
    animation: none;
  }
}

/* ================================================================== */
/* ================== code-view (isolated) ========================== */
body.code-view .container{
  max-width:1300px; width:95%; margin-inline:auto; padding:40px 0; position:relative; display:block; min-height:unset; gap:0;
}
body.code-view .hero{ text-align:center; margin-bottom:16px; }
body.code-view .hero h1{ margin:30px 0 6px; font-size:clamp(22px,3.5vw,28px); }
body.code-view .hero p{ margin:0; color:var(--muted); }

body.code-view #page{ opacity:0; transform:translateY(10px); }
body.code-view #page.page-enter{ opacity:1; transform:none; transition:opacity .35s ease, transform .35s ease; }
body.code-view #page.page-exit{ opacity:0; transform:translateY(10px); transition:opacity .28s ease, transform .28s ease; }

/* Back in code-view (desktop) */
body.code-view .back-btn{
  position:absolute; top:24px; inset-inline-start:auto; inset-inline-end:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#fff; border:none;
  padding:10px 18px; border-radius:12px; font-weight:600; font-size:15px; cursor:pointer;
  box-shadow:0 5px 20px rgba(0,0,0,.35); transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
html[dir="ltr"] body.code-view .back-btn{ inset-inline-end:auto; inset-inline-start:12px; }

body.code-view .editor{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border-radius:14px; box-shadow:0 10px 28px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.04);
  overflow:hidden;
}
body.code-view .editor-topbar{
  background:#1f232a; border-bottom:1px solid var(--border);
  padding:10px 14px; display:flex; align-items:center; justify-content:space-between;
}
body.code-view .traffic{ display:flex; gap:8px; }
body.code-view .dot{ width:12px; height:12px; border-radius:50% }
body.code-view .red{ background:#ff5f57 } .yellow{ background:#ffbd2e } .green{ background:#28c840 }
body.code-view .tab{ background:#2a2f39; color:#cfd3dc; padding:8px 12px; border-radius:8px; font:500 13px "IBM Plex Mono",monospace; }
body.code-view .toolbar{ display:flex; gap:8px; }
body.code-view .tbtn{ background:#2a2f39; color:#fff; border:1px solid var(--border); border-radius:8px; padding:8px 12px; cursor:pointer; transition:.2s; }
body.code-view .tbtn:hover{ background:#333a47 }

body.code-view .codepad{ background:#0d1117; overflow:auto; }

/* Prism + line-numbers */
body.code-view pre[class*="language-"]{
  direction:ltr !important; unicode-bidi:embed !important;
  font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace !important;
  font-variant-numeric: tabular-nums lining-nums !important;
  font-size:15px; line-height:1.7; margin:0 !important; background:transparent !important;
}
body.code-view pre.line-numbers[class*="language-"]{
  position:relative !important;
  padding-left: calc(var(--gutter-width) + var(--gutter-gap)) !important;
  overflow:auto !important;
}
body.code-view pre.line-numbers .line-numbers-rows{
  position:absolute !important; left:0; top:0; bottom:0; width:var(--gutter-width) !important; text-align:right !important;
  pointer-events:none !important; background:transparent !important;
}
body.code-view pre.line-numbers .line-numbers-rows > span{ display:block !important; padding-right:.75em !important; }
body.code-view pre.line-numbers .line-numbers-rows::after{
  content:""; position:absolute !important; top:0; bottom:0; right:var(--separator-space) !important;
  width:1px; background:rgba(255,255,255,.12);
}
body.code-view pre.line-numbers .line-numbers-rows > span:before{ color:#6b7380; font-family:"IBM Plex Mono",monospace !important; }
body.code-view pre.line-numbers code{ position:relative !important; z-index:1 !important; display:block !important; padding-right:1em !important; }
body.code-view #code{ padding-left:60px; }

body.code-view .statusbar{
  background:#1f232a; color:#a7adbb; font-size:12px;
  display:flex; justify-content:space-between; align-items:center;
  padding:8px 14px; border-top:1px solid var(--border);
}

/* ================================================================== */
/* ============================ Video Mode ========================== */
body.video-mode{
  background:
    radial-gradient(2000px 1000px at 50% -10%, rgba(123,92,255,.25), transparent),
    radial-gradient(1600px 800px at 50% 80%, rgba(91,157,255,.25), transparent),
    var(--bg);
  margin:0; min-height:100vh; display:flex; flex-direction:column; align-items:center; justify-content:center; overflow-x:hidden;
}
.video-container{ position:relative; width:100%; max-width:1600px; height:85vh; display:flex; flex-direction:column; justify-content:center; align-items:center; padding:0 20px; margin-top: 120px; }
.video-wrap{
  width:100%; max-width:1500px; background:linear-gradient(180deg,var(--card),var(--card-2));
  border-radius:24px; box-shadow:0 20px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.05);
  display:flex; flex-direction:column; justify-content:center; align-items:center; padding:24px; gap:20px;
}

.player{ width:100%; height:100%; aspect-ratio:16/9; max-height:80vh; border-radius:18px; overflow:hidden; background:#000; box-shadow:0 10px 30px rgba(0,0,0,.5); }
.hint{ text-align:center; color:var(--muted); font-size:15px; margin-top:12px; line-height:1.8; max-width:900px; }

body.video-mode .back-btn{
  position:fixed; top:20px; z-index:100; display:inline-flex;
  background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#fff; border:none;
  padding:10px 18px; border-radius:12px; font-weight:600; font-size:15px; cursor:pointer;
  box-shadow:0 5px 20px rgba(0,0,0,.35); transition: transform .2s ease, box-shadow .2s ease;
}
body.video-mode .back-btn:hover{ transform:translateY(-2px); box-shadow:0 10px 28px rgba(91,157,255,.4); }

body.video-mode .hero,
body.video-mode .grid,
body.video-mode .foot,
body.video-mode #lang-toggle{ display:none !important; }

#video-container[hidden]{ display:none !important; }
body.video-mode #video-container{ display:block !important; }
@media (max-width:900px){
  .video-container{ height:70vh; }
  .player{ max-height:65vh; border-radius:12px; }
}

/* -------------------------------------------------------
   📱 Responsive only on touch portrait (no desktop impact)
--------------------------------------------------------*/
@media (max-width:940px) and (orientation:portrait) and (hover:none) and (pointer:coarse){
  .container{ padding:24px 16px; gap:20px; max-width:640px; padding-block-start:300px; padding-block-end:76px; }
  .hero h1{ font-size:clamp(22px,5.5vw,28px); letter-spacing:.1px; }
  .subtitle{ font-size:clamp(13px,3.8vw,15px); }

  .grid{ grid-template-columns:1fr !important; gap:14px; }
  .card{ padding:18px 16px; border-radius:14px; }
  .icon{ width:38px; height:38px; font-size:20px; border-radius:10px; }
  .label{ font-size:16px; font-weight:700; }

  .content-card{ padding:20px 16px; font-size:16px; line-height:1.75; border-radius:14px; }
  .content-card h2{ font-size:18px; }

  .algorithm-boxes{ gap:16px; margin-block-start:20px; }
  .algo-card{ padding:18px 16px; border-radius:16px; line-height:1.8; font-size:16px; }
  .algo-title{ font-size:18px; }

  .steps > li{ padding:12px 18px; margin-top:8px; }
  .steps > li::before{ top:8px; width:30px; height:30px; border-radius:8px; font-size:13px; }
  html[dir="rtl"] .steps > li::before{ right:-24px; }
  html[dir="ltr"] .steps > li::before{ left:-24px; }
  .substeps{ padding-inline-start:18px; }

  #chart{ padding:12px; }
  #chart .svg-wrap svg{ transform:scale(.92); }

  /* Language button & Back exact mobile placement */
  .lang-float{
    bottom: calc(env(safe-area-inset-bottom,0px) + 16px);
    width:50px; height:50px; box-shadow:0 6px 22px rgba(0,0,0,.38);
  }
  html[dir="rtl"] .lang-float{ inset-inline-end:16px; }
  html[dir="ltr"] .lang-float{ inset-inline-start:16px; }

  .back-btn{
    position:fixed; top: calc(env(safe-area-inset-top,0px) + 16px);
    inset-inline-start:16px; inset-inline-end:auto; transform:none !important; z-index:1100;
  }

  .foot{ font-size:12px; }
}

/* -------------------------------------------------------
   🧭 Ultra-narrow phones (≤360px)
--------------------------------------------------------*/
@media (max-width:360px) and (orientation:portrait) and (hover:none) and (pointer:coarse){
  .container{ padding:20px 12px; }
  .lang-float{ width:46px; height:46px; bottom:12px; }
  html[dir="rtl"] .lang-float{ inset-inline-end:12px; }
  html[dir="ltr"] .lang-float{ inset-inline-start:12px; }
  .back-btn{ top:12px; inset-inline-start:12px; }
  .steps > li::before{ width:26px; height:26px; font-size:12px; }
  #chart .svg-wrap svg{ transform:scale(.88); }
}

/* === Fix: back button direction in FA code-view === */
body.lang-fa.code-view .back-btn {
  direction: initial !important;
}

/* === 🎯 Final desktop back button alignment (FA & EN) === */
@media (min-width: 981px) {
  .back-btn {
    position: absolute !important;
    top: 45px !important;
    transform: none !important;
    z-index: 1000 !important;
  }

  html[dir="rtl"] .back-btn {
    right: 0 !important;
    left: auto !important;
    margin-right: -59px !important;
  }

  html[dir="ltr"] .back-btn {
    left: 0 !important;
    right: auto !important;
    margin-left: -59px !important;
  }
}

/* ✅ Fix: code-view back button on mobile (portrait) */
@media (max-width: 940px) and (orientation: portrait) and (hover: none) and (pointer: coarse) {
  body.code-view .back-btn{
    position: fixed !important;
    top: 18px !important;
    inset-inline-start: 16px !important;
    inset-inline-end: auto !important;
    z-index: 1100;
    direction: initial;
  }
  html[dir="rtl"] body.code-view .back-btn{
    inset-inline-start: auto !important;
    inset-inline-end: 16px !important;
  }

  body.code-view .container{
    padding-block-start: 88px !important;
  }

  body.code-view .hero{
    margin-top: 4px;
  }
}

/* ==== بهبود خوانایی دکمه زبان در لایت مود ==== */
.lang-float{
  color:#fff;
  text-shadow: 0 1px 0 rgba(0,0,0,.35);
}

@media (prefers-color-scheme: light){
  .lang-float{
    background: rgba(0,0,0,0.06) !important;
    color: #0b1020 !important;
    text-shadow: 0 1px 0 rgba(255,255,255,.35);
    box-shadow: 0 12px 28px rgba(0,0,0,.25);
  }
  .lang-float:hover{
    background: linear-gradient(135deg, var(--accent), var(--accent-2)) !important;
    color:#fff !important;
    text-shadow: 0 1px 0 rgba(0,0,0,.25);
    box-shadow: 0 12px 32px rgba(29,78,216,.35);
  }
  .lang-float:focus-visible{
    box-shadow: var(--ring) !important;
  }
}

/* ✅ موبایل عمودی: باکس ویدیو جمع‌وجور و درست */
@media (max-width: 940px) and (orientation: portrait) and (hover: none) and (pointer: coarse) {

  body.video-mode {
    min-height: 100vh;
    overflow-x: hidden;
  }

  .video-container {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    height: auto;
    padding: 12px;
  }

  .video-wrap {
    padding: 12px;
    border-radius: 16px;
    gap: 12px;
    box-shadow: 0 12px 28px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.05);
  }

  .player {
    width: 100%;
    height: auto !important;
    aspect-ratio: 16 / 9;
    max-height: none !important;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    box-shadow: 0 8px 20px rgba(0,0,0,.35);
  }

  .player iframe,
  .player video {
    width: 100%;
    height: auto !important;
    aspect-ratio: 16 / 9;
    display: block;
  }

  .hint {
    font-size: 13px;
    line-height: 1.7;
    margin-top: 6px;
    max-width: 560px;
  }
}

/* 📱 خیلی باریک‌ها (≤360px) حتی جمع‌تر */
@media (max-width: 360px) and (orientation: portrait) and (hover: none) and (pointer: coarse) {
  .video-container { max-width: 320px; padding: 10px; }
  .video-wrap { padding: 10px; border-radius: 12px; }
  .player { border-radius: 10px; }
}