/* ============================================================
   تابلوی قیمت فولاد — Steel Price Comparison Board
   Dark forged steel. The cheapest price glows hot. Everything
   else stays quiet so that one thing pops.
   ============================================================ */

/* ---------- Self-hosted Vazirmatn (no CDN — works offline in Iran) ---------- */
@font-face{
  font-family:"Vazirmatn"; src:url("fonts/Vazirmatn-Regular.woff2") format("woff2");
  font-weight:400; font-style:normal; font-display:swap;
}
@font-face{
  font-family:"Vazirmatn"; src:url("fonts/Vazirmatn-SemiBold.woff2") format("woff2");
  font-weight:600; font-style:normal; font-display:swap;
}
@font-face{
  font-family:"Vazirmatn"; src:url("fonts/Vazirmatn-ExtraBold.woff2") format("woff2");
  font-weight:800; font-style:normal; font-display:swap;
}

/* ---------- Design tokens ---------- */
:root{
  --bg:#0f1216;
  --surface:#1a2029;
  --surface-2:#212934;
  --line:#2a3441;
  --line-soft:rgba(122,140,162,.14);
  --ink:#e8edf3;
  --muted:#8794a4;
  --faint:#5c6773;
  --forge:#ff6a2b;
  --forge-hi:#ff9052;
  --forge-glow:rgba(255,106,43,.32);
  --steel:#6fa8cf;
  --steel-glow:rgba(111,168,207,.22);
  --live:#3fd08a;

  --fa:"Vazirmatn",Tahoma,"Segoe UI",system-ui,sans-serif;

  --r-lg:18px;
  --r-md:13px;
  --r-sm:9px;
  --maxw:1120px;

  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- Reset ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--fa);
  font-weight:400;
  line-height:1.75;
  letter-spacing:0;               /* never track Arabic script */
  direction:rtl;
  min-height:100vh;
  overflow-x:hidden;              /* no horizontal scroll, ever */
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* forge backdrop: hot-steel glow bleeding from the top corner */
.forge-bg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(920px 560px at 94% -10%, rgba(255,106,43,.11) 0%, transparent 55%),
    radial-gradient(760px 620px at 4% -6%, rgba(111,168,207,.06) 0%, transparent 52%),
    radial-gradient(130% 120% at 50% 0%, transparent 62%, rgba(6,8,10,.55) 100%);
}

.wrap{
  position:relative; z-index:1;
  max-width:var(--maxw);
  margin:0 auto;
  padding:clamp(16px,4vw,34px) clamp(14px,4vw,30px) 40px;
}
/* inside Telegram: clear the client header / notch */
body.in-telegram .wrap{ padding-top:calc(clamp(16px,4vw,34px) + env(safe-area-inset-top,0px)); }

/* tabular figures helper — prices align like a terminal */
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ============================================================
   HEADER — exchange board
   ============================================================ */
.head{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(16px,3.4vw,26px) clamp(16px,3.4vw,28px);
  box-shadow:0 24px 60px -34px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.03);
}
/* slow mill-shimmer sweep */
.head-shimmer{
  position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(105deg,transparent 38%,rgba(255,144,82,.09) 48%,rgba(255,255,255,.05) 52%,transparent 62%);
  transform:translateX(120%);
  animation:shimmer 6.5s var(--ease) infinite;
}
@keyframes shimmer{
  0%{transform:translateX(120%)}
  60%,100%{transform:translateX(-130%)}
}

.head-top{
  position:relative; z-index:1;
  display:flex; flex-wrap:wrap; gap:16px 20px;
  align-items:flex-start; justify-content:space-between;
}

.brand{display:flex; align-items:center; gap:14px; min-width:0}
.brand-mark{
  display:grid; place-items:center;
  width:52px; height:52px; flex:0 0 auto;
  background:radial-gradient(120% 120% at 30% 20%,#26303b,#161c24);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:0 10px 22px -12px rgba(255,106,43,.5), inset 0 1px 0 rgba(255,255,255,.05);
}
.title{
  font-weight:800; font-size:clamp(21px,4.6vw,30px); line-height:1.15;
  letter-spacing:-.01em;
}
.subtitle{
  color:var(--muted); font-weight:400;
  font-size:clamp(12px,2.6vw,13.5px); line-height:1.6; margin-top:3px;
}

.head-status{
  display:flex; flex-direction:column; align-items:flex-start; gap:8px;
}
@media (min-width:520px){ .head-status{align-items:flex-end} }

.live-pill{
  display:inline-flex; align-items:center; gap:7px;
  background:rgba(63,208,138,.10);
  border:1px solid rgba(63,208,138,.32);
  color:var(--live);
  font-weight:600; font-size:12.5px;
  padding:5px 12px; border-radius:999px;
}
.live-dot{
  width:8px; height:8px; border-radius:50%; background:var(--live);
  box-shadow:0 0 0 0 rgba(63,208,138,.55);
  animation:pulse 2s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(63,208,138,.55)}
  70%{box-shadow:0 0 0 9px rgba(63,208,138,0)}
  100%{box-shadow:0 0 0 0 rgba(63,208,138,0)}
}
.updated{color:var(--muted); font-size:12.5px}
.updated time{color:var(--ink); font-variant-numeric:tabular-nums}

/* source chips */
.sources{
  position:relative; z-index:1;
  display:flex; flex-wrap:wrap; gap:9px;
  margin-top:18px; padding-top:16px;
  border-top:1px solid var(--line-soft);
}
.chip{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 13px 7px 14px;
  font-size:13px; font-weight:600; color:var(--ink);
}
.chip .dot{width:9px; height:9px; border-radius:50%; flex:0 0 auto}
.chip.a .dot{background:var(--forge); box-shadow:0 0 10px var(--forge-glow)}
.chip.b .dot{background:var(--steel); box-shadow:0 0 10px var(--steel-glow)}
.chip .chip-role{color:var(--muted); font-weight:400; font-size:11.5px}

/* ============================================================
   SUMMARY STRIP
   ============================================================ */
.summary{
  display:grid; grid-template-columns:1fr; gap:12px;
  margin-top:14px;
}
@media (min-width:640px){ .summary{grid-template-columns:repeat(3,1fr)} }

.stat{
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:15px 17px;
  min-height:44px;
}
.stat-label{color:var(--muted); font-size:12px; font-weight:400; margin-bottom:7px}
.stat-value{font-size:clamp(19px,4.2vw,23px); font-weight:800; line-height:1.2}
.stat-sub{color:var(--faint); font-size:11.5px; font-weight:400; margin-top:3px}
.stat.accent{
  border-color:rgba(255,106,43,.36);
  background:linear-gradient(180deg,rgba(255,106,43,.10),rgba(255,106,43,.02));
}
.stat.accent .stat-value{color:var(--forge-hi)}
/* group-status mini legend inside stat 3 */
.gstat{display:inline-flex; align-items:center; gap:6px; font-size:12.5px; font-weight:600}
.gstat + .gstat{margin-inline-start:14px}
.gstat .d{width:8px;height:8px;border-radius:50%}
.gstat.a .d{background:var(--forge)} .gstat.b .d{background:var(--steel)}

/* ============================================================
   BOARD — categories & product rows
   ============================================================ */
.board{margin-top:26px; display:flex; flex-direction:column; gap:30px}

.cat-head{
  display:flex; align-items:center; gap:14px; margin-bottom:14px;
}
.cat-eyebrow{
  font-weight:600; font-size:13px; color:var(--ink);
  white-space:nowrap;
  display:inline-flex; align-items:center; gap:9px;
}
.cat-eyebrow::before{
  content:""; width:20px; height:2px; border-radius:2px;
  background:linear-gradient(90deg,var(--forge),transparent);
}
.cat-count{color:var(--faint); font-size:11.5px; font-weight:400}
.cat-rule{flex:1; height:1px; background:linear-gradient(90deg,var(--line),transparent)}

.rows{display:flex; flex-direction:column; gap:11px}

/* product row */
.row{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:13px;
  display:grid; grid-template-columns:1fr; gap:11px;
  transition:border-color .3s var(--ease);
}
@media (min-width:640px){
  .row{
    grid-template-columns:minmax(190px,1.15fr) 1fr 1fr;
    gap:13px; align-items:stretch; padding:14px;
  }
}
.row:hover{border-color:#33414f}

/* row name block */
.name{
  display:flex; flex-direction:column; justify-content:center; gap:7px;
  padding:2px 4px;
}
.name h3{font-size:15px; font-weight:600; line-height:1.5}
.name-meta{display:flex; flex-wrap:wrap; align-items:center; gap:8px}
.unit{color:var(--muted); font-size:12px}
.diff-tag{
  display:inline-flex; align-items:center; gap:5px;
  background:rgba(122,140,162,.10);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:11.5px; font-weight:600;
  padding:3px 9px; border-radius:999px;
}
.diff-tag b{color:var(--ink); font-weight:800; font-variant-numeric:tabular-nums}

/* price cell */
.cell{
  position:relative;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:12px 14px;
  min-height:44px;
  display:flex; flex-direction:column; gap:8px;
  transition:transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.cell-top{display:flex; align-items:center; justify-content:space-between; gap:8px}
.cell-group{display:inline-flex; align-items:center; gap:7px; min-width:0}
.cell-group .d{width:9px;height:9px;border-radius:50%; flex:0 0 auto}
.cell.g-a .cell-group .d{background:var(--forge)}
.cell.g-b .cell-group .d{background:var(--steel)}
.cell-group span{color:var(--muted); font-size:12px; font-weight:400; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}

.price{
  font-weight:800; font-size:clamp(22px,5.4vw,27px); line-height:1.05;
  letter-spacing:-.01em;
  font-variant-numeric:tabular-nums; font-feature-settings:"tnum" 1;
  display:flex; align-items:baseline; gap:6px;
}
.price .cur{font-size:12px; font-weight:400; color:var(--muted); letter-spacing:0}
.stock{color:var(--muted); font-size:12px}
.stock b{color:var(--ink); font-weight:600; font-variant-numeric:tabular-nums}

/* -------- the signature: forge glow on the cheaper cell -------- */
.win-tag{
  display:inline-flex; align-items:center; gap:5px;
  background:var(--forge); color:#160b04;
  font-size:11px; font-weight:800;
  padding:3px 9px; border-radius:999px;
  box-shadow:0 4px 14px -4px var(--forge-glow);
}
.cell.win{
  border-color:rgba(255,106,43,.55);
  background:
    radial-gradient(120% 130% at 82% 12%, rgba(255,106,43,.18) 0%, transparent 60%),
    linear-gradient(180deg,#241a15,#1e1712);
  box-shadow:
    0 0 0 1px rgba(255,106,43,.18),
    0 18px 44px -22px var(--forge-glow),
    inset 0 0 24px -6px rgba(255,106,43,.20),   /* inner ring / hot core */
    inset 0 0 0 1px rgba(255,144,82,.14);
}
.cell.win .price{color:var(--forge-hi)}
.cell.win .cell-group span{color:#d9c3b4}

/* hover (desktop only): lift + intensify the hot glow */
@media (hover:hover) and (pointer:fine){
  .cell:hover{transform:translateY(-2px)}
  .cell.win:hover{
    box-shadow:
      0 0 0 1px rgba(255,106,43,.3),
      0 26px 54px -20px var(--forge-glow),
      inset 0 0 34px -4px rgba(255,106,43,.30),
      inset 0 0 0 1px rgba(255,144,82,.22);
  }
}

/* ============================================================
   FOOTER
   ============================================================ */
.foot{margin-top:34px; padding-top:18px; border-top:1px solid var(--line-soft)}
.foot-line{color:var(--muted); font-size:12.5px}
.foot-sample{
  display:inline-flex; align-items:center; gap:8px;
  margin-top:12px;
  color:var(--faint); font-size:12px;
  background:rgba(122,140,162,.06);
  border:1px dashed var(--line);
  border-radius:999px; padding:6px 13px;
}
.sample-dot{width:7px;height:7px;border-radius:50%;background:var(--faint);flex:0 0 auto}

/* ============================================================
   MOTION — staggered reveal on load
   ============================================================ */
.reveal{opacity:0; transform:translateY(14px)}
.reveal.in{
  opacity:1; transform:none;
  transition:opacity .6s var(--ease), transform .6s var(--ease);
}

/* ============================================================
   A11Y — keyboard focus
   ============================================================ */
:focus-visible{
  outline:2px solid var(--forge-hi);
  outline-offset:3px;
  border-radius:6px;
}
.cell:focus-visible{outline-color:var(--steel)}
.cell.win:focus-visible{outline-color:var(--forge-hi)}

/* ============================================================
   REDUCED MOTION — kill everything cleanly
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .head-shimmer{display:none}
  .live-dot{animation:none}
  .reveal{opacity:1; transform:none}
}