/* ============================================================
   base.css — Design tokens, reset, shared utilities
   Dark (default) + Light theme
   ============================================================ */

:root{
  --bg:#05070C;
  --surface:rgba(160,185,255,.05);
  --surface2:rgba(160,185,255,.09);
  --line:rgba(170,195,255,.12);
  --line2:rgba(170,195,255,.25);
  --text:#EAF0FF;
  --muted:#9AA6C4;
  --dim:#7D89A8;
  --blue:#A9C6FF;
  --sky:#B9E3FF;
  --peri:#BDB9FF;
  --ice:#DDEBFF;
  --ink:#06080E;
  --glow:rgba(150,180,255,.38);
  --grid:rgba(170,195,255,.12);
  --aurora-1:rgba(120,150,255,.13);
  --aurora-2:rgba(185,227,255,.06);
  --display:'Bricolage Grotesque','Vazirmatn',system-ui,sans-serif;
  --body:'Vazirmatn',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --r:22px;
  --wrap-max:1180px;
  --wrap-x:2rem;
  color-scheme:dark;
}

[data-theme="light"]{
  --bg:#F4F6FB;
  --surface:rgba(120,150,220,.06);
  --surface2:rgba(120,150,220,.11);
  --line:rgba(80,110,180,.14);
  --line2:rgba(80,110,180,.28);
  --text:#0B1424;
  --muted:#4A5878;
  --dim:#6B7899;
  --blue:#3E6FDD;
  --sky:#5B9BE8;
  --peri:#7A6DE8;
  --ice:#0A1834;
  --ink:#FFFFFF;
  --glow:rgba(62,111,221,.30);
  --grid:rgba(80,110,180,.10);
  --aurora-1:rgba(120,150,255,.16);
  --aurora-2:rgba(150,200,255,.12);
  color-scheme:light;
}

*{box-sizing:border-box;margin:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:1.02rem;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .4s ease, color .4s ease;
}
html[lang=fa] body{line-height:1.95}
[dir=rtl] *{letter-spacing:0!important}

body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 85% 65% at 50% 0%,#000 15%,transparent 75%);
  mask-image:radial-gradient(ellipse 85% 65% at 50% 0%,#000 15%,transparent 75%);
  opacity:.6;
  transition:opacity .4s ease;
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60% 45% at 88% 4%,var(--aurora-1),transparent 70%),
    radial-gradient(45% 35% at 6% 30%,var(--aurora-2),transparent 70%);
  transition:background .4s ease;
}

img,svg{max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:8px}

.skip{
  position:absolute;inset-inline-start:1rem;top:-4rem;
  background:var(--blue);color:var(--ink);
  padding:.5rem 1rem;border-radius:10px;
  z-index:100;text-decoration:none;font-weight:600;
  transition:top .2s;
}
.skip:focus{top:1rem}

.wrap,
.hero-in{
  width:min(var(--wrap-max), 100% - (var(--wrap-x) * 2));
  margin-inline:auto;
}

.ic{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
[dir=rtl] .flip{transform:scaleX(-1)}

h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.12;letter-spacing:-.02em;color:var(--ice)}
[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] h3{line-height:1.4}
h2{font-size:clamp(2rem,4.4vw,3.3rem)}
h3{font-size:1.2rem;letter-spacing:-.01em}

.muted{color:var(--muted)}
.lead{color:var(--muted);max-width:56ch;margin-top:1rem;font-size:1.06rem}
.sec{padding:clamp(4.5rem,9vw,7.5rem) 0}
.sec-head{margin-bottom:clamp(2rem,4vw,3.25rem)}

.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.8rem 1.35rem;border-radius:999px;
  border:1px solid var(--line2);color:var(--text);
  text-decoration:none;font-weight:600;font-size:.95rem;
  background:transparent;cursor:pointer;font-family:inherit;
  transition:transform .25s cubic-bezier(.2,.7,.2,1),background .25s,border-color .25s,box-shadow .25s,color .25s;
  touch-action:manipulation;
}
.btn .ic{transition:transform .25s}
.btn:hover{transform:translateY(-2px);border-color:var(--blue);background:var(--surface2)}
.btn:hover .ic{transform:translateX(3px)}
[dir=rtl] .btn:hover .ic{transform:translateX(-3px) scaleX(-1)}
.btn:active{transform:translateY(0) scale(.97)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:var(--ink)}
.btn.primary:hover{background:var(--ice);box-shadow:0 10px 34px -10px var(--glow)}
.btn.sm{padding:.5rem 1rem;font-size:.86rem}

.icon-btn{
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line2);color:var(--muted);
  transition:transform .25s,color .25s,border-color .25s,background .25s;
  text-decoration:none;touch-action:manipulation;
}
.icon-btn:hover{color:var(--ice);border-color:var(--blue);background:var(--surface2);transform:translateY(-2px)}

.panel{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);transition:background .4s ease,border-color .4s ease}
.spot{position:relative;transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .3s,background .3s}
.spot:hover{
  border-color:var(--line2);
  background:radial-gradient(320px circle at var(--x,50%) var(--y,0%),var(--surface2),transparent 62%),var(--surface);
}

.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0}
.chip{padding:.32rem .85rem;border:1px solid var(--line2);border-radius:999px;font-size:.86rem;color:var(--muted);transition:color .2s,border-color .2s,background .2s}
.chip:hover{color:var(--ice);border-color:var(--blue);background:var(--surface2)}

.js .rv{opacity:0;transform:translateY(14px);transition:opacity .7s ease var(--d,0s),transform .7s cubic-bezier(.2,.7,.2,1) var(--d,0s)}
.js .rv.in{opacity:1;transform:none}

.cglow{
  position:fixed;left:-290px;top:-290px;
  width:580px;height:580px;border-radius:50%;
  pointer-events:none;z-index:-1;
  background:radial-gradient(circle,var(--surface2),transparent 62%);
  opacity:0;transition:opacity .4s;will-change:transform;
}
.cglow.on{opacity:1}

#toast{
  position:fixed;inset-inline:0;bottom:1.5rem;margin-inline:auto;
  width:max-content;max-width:calc(100% - 2rem);
  padding:.8rem 1.3rem;border:1px solid var(--line2);border-radius:14px;
  background:var(--bg);color:var(--text);font-size:.92rem;
  z-index:80;opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .3s,transform .3s;
}
#toast.on{opacity:1;transform:none}

.badge{display:inline-flex;align-items:center;gap:.5rem;padding:.3rem .8rem;border:1px solid var(--line2);border-radius:999px;font-size:.82rem;color:var(--blue)}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--blue)}

.tag{font-size:.78rem;color:var(--blue);border:1px solid var(--line2);border-radius:999px;padding:.12rem .65rem;white-space:nowrap;display:inline-block}