/* =========================================================
   SatNet — Deep Signal brand system
   ========================================================= */
:root {
  /* Surfaces */
  --bg-0: #05070D;         /* deep space */
  --bg-1: #0A0E1A;         /* surface */
  --bg-2: #0F1426;         /* raised */
  --bg-3: #161C33;         /* card hover */
  --line: rgba(170, 190, 255, 0.10);
  --line-strong: rgba(170, 190, 255, 0.18);

  /* Light theme */
  --light-bg-0: #F6F7FB;
  --light-bg-1: #FFFFFF;
  --light-line: rgba(10, 14, 26, 0.10);

  /* Accents */
  --accent: #6BE3D6;        /* plasma teal — signal */
  --accent-2: #6E7CFF;      /* orbital indigo */
  --accent-glow: 0 0 28px rgba(107, 227, 214, 0.45);

  /* Status */
  --success: #3FD18B;
  --warning: #F2B544;
  --danger:  #FF5A6A;

  /* Text */
  --ink: #E7EAF2;
  --ink-soft: #B4BCD0;
  --ink-mute: #7A8499;
  --ink-dim: #515A72;
  --ink-light: #0A0E1A;

  /* Tier */
  --bronze-a: #E29A6C; --bronze-b: #8B4A2A;
  --silver-a: #E8EEF5; --silver-b: #8C95A3;
  --gold-a:   #F8D77F; --gold-b:   #B17A1A;
  --diamond-a:#B8F1FF; --diamond-b:#3D8FC9;
  --crown-a:  #D8B8FF; --crown-b:  #5A3DCC;

  /* Type */
  --f-display: "Space Grotesk", system-ui, sans-serif;
  --f-body: "Manrope", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, monospace;
  --f-fa: "Vazirmatn", "Manrope", system-ui, sans-serif;
  --f-ar: "Cairo", "Manrope", system-ui, sans-serif;

  /* Scale */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-0);
  color: var(--ink);
  font-family: var(--f-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Cosmic backdrop — subtle gradient + starfield */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(110, 124, 255, 0.18), transparent 60%),
    radial-gradient(700px 500px at -10% 30%, rgba(107, 227, 214, 0.10), transparent 65%),
    radial-gradient(1200px 800px at 50% 120%, rgba(168, 120, 255, 0.10), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: "";
  position: fixed; inset: 0;
  background-image:
    radial-gradient(1px 1px at 22% 18%, rgba(255,255,255,0.55), transparent 50%),
    radial-gradient(1px 1px at 78% 42%, rgba(255,255,255,0.4), transparent 50%),
    radial-gradient(1px 1px at 60% 80%, rgba(255,255,255,0.5), transparent 50%),
    radial-gradient(1px 1px at 12% 70%, rgba(255,255,255,0.35), transparent 50%),
    radial-gradient(1.5px 1.5px at 90% 15%, rgba(255,255,255,0.6), transparent 50%),
    radial-gradient(1px 1px at 40% 35%, rgba(255,255,255,0.3), transparent 50%);
  background-size: 1200px 800px;
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

main, header, section { position: relative; z-index: 1; }

/* =========== Type =========== */
.display-xl { font-family: var(--f-display); font-weight: 700; font-size: clamp(48px, 7vw, 96px); line-height: 1.02; letter-spacing: -0.03em; }
.display-l  { font-family: var(--f-display); font-weight: 700; font-size: clamp(36px, 4.5vw, 56px); line-height: 1.08; letter-spacing: -0.025em; }
.h1 { font-family: var(--f-display); font-weight: 600; font-size: 32px; line-height: 1.18; letter-spacing: -0.02em; }
.h2 { font-family: var(--f-display); font-weight: 600; font-size: 24px; line-height: 1.22; letter-spacing: -0.015em; }
.h3 { font-family: var(--f-display); font-weight: 600; font-size: 18px; line-height: 1.3; letter-spacing: -0.01em; }
.body { font-size: 15px; line-height: 1.55; color: var(--ink-soft); }
.small { font-size: 13px; line-height: 1.5; color: var(--ink-mute); }
.micro { font-size: 11px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); }
.mono { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.02em; }

a { color: inherit; text-decoration: none; }

/* =========== Layout =========== */
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 96px 0; border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; margin-bottom: 48px; }
.section-head .tag { display: inline-flex; gap: 10px; align-items: center; padding: 6px 12px; border: 1px solid var(--line-strong); border-radius: 999px; background: rgba(107, 227, 214, 0.06); color: var(--accent); font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; }
.section-head .tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.kicker { color: var(--ink-mute); max-width: 520px; }

/* =========== Cards =========== */
.card {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.card.glow::after {
  content: ""; position: absolute; inset: -1px;
  border-radius: inherit; pointer-events: none;
  background: radial-gradient(400px 200px at 50% -20%, rgba(107, 227, 214, 0.18), transparent 60%);
}
.card .label { display: flex; justify-content: space-between; gap: 16px; align-items: center; }

/* =========== Nav =========== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5, 7, 13, 0.7);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 32px; max-width: 1400px; margin: 0 auto; }
.topnav { display: flex; gap: 8px; flex-wrap: wrap; }
.topnav a { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); padding: 8px 12px; border-radius: 999px; transition: 0.15s; }
.topnav a:hover { color: var(--ink); background: rgba(255,255,255,0.04); }
.topnav a.active { color: var(--accent); background: rgba(107, 227, 214, 0.08); }
.brand-bug { display: flex; gap: 12px; align-items: center; font-family: var(--f-display); font-weight: 600; letter-spacing: -0.02em; }

/* =========== Buttons =========== */
.btn {
  display: inline-flex; gap: 10px; align-items: center;
  padding: 12px 18px;
  border-radius: 999px;
  font-family: var(--f-display); font-weight: 600; font-size: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 0.15s;
}
.btn-primary { background: var(--accent); color: #04221F; box-shadow: 0 0 0 1px rgba(107, 227, 214, 0.4), 0 10px 30px rgba(107, 227, 214, 0.22); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(107, 227, 214, 0.6), 0 16px 36px rgba(107, 227, 214, 0.32); }
.btn-ghost { background: rgba(255,255,255,0.04); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: rgba(255,255,255,0.08); }

/* =========== Hero =========== */
.hero { padding: 140px 0 80px; position: relative; }
.hero .eyebrow { display: inline-flex; gap: 12px; align-items: center; padding: 8px 14px; border: 1px solid var(--line-strong); border-radius: 999px; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 28px; }
.hero .eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: pulse 2.4s ease-in-out infinite; }
.hero .meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 64px; padding-top: 32px; border-top: 1px solid var(--line); }
.hero .meta .item .micro { display: block; margin-bottom: 8px; }
.hero .meta .item .v { font-family: var(--f-display); font-size: 18px; color: var(--ink); }

@keyframes pulse { 0%,100%{ opacity: 1; transform: scale(1);} 50% { opacity: 0.5; transform: scale(1.3);} }

/* =========== Logo board =========== */
.logo-board { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.logo-tile { aspect-ratio: 4/3; display: grid; place-items: center; padding: 32px; position: relative; }
.logo-tile.dark { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); }
.logo-tile.light { background: var(--light-bg-0); border: 1px solid var(--light-line); border-radius: var(--r-lg); color: var(--ink-light); }
.logo-tile .stamp { position: absolute; top: 14px; left: 18px; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-mute); }
.logo-tile.light .stamp { color: #6b7488; }

.logo-variants { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 32px; }
.logo-variants .tile { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-md); aspect-ratio: 1.4/1; display: grid; place-items: center; position: relative; padding: 18px; }
.logo-variants .tile.light { background: var(--light-bg-1); border-color: var(--light-line); color: var(--ink-light); }
.logo-variants .tile .name { position: absolute; bottom: 12px; left: 14px; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); }
.logo-variants .tile.light .name { color: #6b7488; }

/* concept board */
.concept-board { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.concept-card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 0; overflow: hidden; }
.concept-card .canvas { aspect-ratio: 4/3; display: grid; place-items: center; background:
  radial-gradient(circle at 50% 50%, rgba(107, 227, 214, 0.08), transparent 60%),
  linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border-bottom: 1px solid var(--line);
}
.concept-card .meta { padding: 20px 22px; }
.concept-card .meta .badge { display: inline-block; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.concept-card.locked { border-color: rgba(107, 227, 214, 0.45); box-shadow: 0 0 0 1px rgba(107, 227, 214, 0.25), 0 0 40px rgba(107, 227, 214, 0.12); }
.concept-card.locked .badge { color: var(--accent); }

/* =========== Color =========== */
.palette { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.swatch { border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--line); }
.swatch .chip { aspect-ratio: 1.1/1; }
.swatch .meta { padding: 12px 14px; background: var(--bg-1); }
.swatch .meta .name { font-family: var(--f-display); font-weight: 600; font-size: 13px; }
.swatch .meta .hex { font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); margin-top: 2px; }

.tier-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.tier-card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px 22px; text-align: center; position: relative; overflow: hidden; }
.tier-card .sat { aspect-ratio: 1; display: grid; place-items: center; margin-bottom: 16px; }
.tier-card .name { font-family: var(--f-display); font-weight: 600; font-size: 18px; letter-spacing: -0.01em; }
.tier-card .gradient { display: flex; gap: 4px; margin-top: 12px; justify-content: center; }
.tier-card .gradient span { font-family: var(--f-mono); font-size: 10px; color: var(--ink-mute); }
.tier-card.bronze   { background: radial-gradient(120% 60% at 50% 0%, rgba(226,154,108,0.18), transparent 60%), var(--bg-1); }
.tier-card.silver   { background: radial-gradient(120% 60% at 50% 0%, rgba(232,238,245,0.15), transparent 60%), var(--bg-1); }
.tier-card.gold     { background: radial-gradient(120% 60% at 50% 0%, rgba(248,215,127,0.18), transparent 60%), var(--bg-1); }
.tier-card.diamond  { background: radial-gradient(120% 60% at 50% 0%, rgba(184,241,255,0.20), transparent 60%), var(--bg-1); }
.tier-card.crown    { background: radial-gradient(120% 70% at 50% 0%, rgba(216,184,255,0.22), transparent 60%), var(--bg-1); }

/* contrast matrix */
.contrast { display: grid; grid-template-columns: repeat(6, 1fr); gap: 4px; margin-top: 16px; }
.contrast .cell { aspect-ratio: 1.6/1; border-radius: 6px; display: grid; place-items: center; font-family: var(--f-mono); font-size: 11px; }
.contrast .cell.pass { outline: 1px solid rgba(63, 209, 139, 0.5); }
.contrast .cell.fail { outline: 1px solid rgba(255, 90, 106, 0.5); opacity: 0.5; }

/* =========== Type specimen =========== */
.spec { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 36px; }
.spec .sample { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px dashed var(--line); align-items: baseline; }
.spec .sample:last-child { border-bottom: 0; }
.spec .sample .meta { color: var(--ink-mute); font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }

.specimen-stack { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.spec-card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px; }
.spec-card .glyphs { font-family: var(--f-display); font-size: 84px; line-height: 1; letter-spacing: -0.04em; margin: 18px 0 26px; color: var(--ink); }
.spec-card .weights { display: flex; gap: 16px; flex-wrap: wrap; }
.spec-card .weights span { font-family: var(--f-display); font-size: 22px; color: var(--ink-soft); }

/* =========== Icons grid =========== */
.icon-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 12px; }
.icon-tile { aspect-ratio: 1; background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-md); display: grid; place-items: center; position: relative; transition: 0.15s; }
.icon-tile:hover { background: var(--bg-3); border-color: var(--line-strong); }
.icon-tile .lbl { position: absolute; bottom: 6px; left: 0; right: 0; text-align: center; font-family: var(--f-mono); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-mute); }

/* =========== Patterns =========== */
.pattern-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pattern-tile { aspect-ratio: 4/3; border-radius: var(--r-lg); border: 1px solid var(--line); overflow: hidden; position: relative; }
.pattern-tile .lbl { position: absolute; left: 18px; bottom: 14px; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink); background: rgba(0,0,0,0.4); padding: 4px 10px; border-radius: 999px; backdrop-filter: blur(8px); }

/* =========== Social board =========== */
.social-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.social-card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; position: relative; }
.social-card .head { padding: 14px 18px; display: flex; justify-content: space-between; align-items: center; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); border-bottom: 1px solid var(--line); }
.social-card .canvas { background: var(--bg-0); }

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-12 { grid-column: span 12; }

/* =========== Animated previews =========== */
.anim-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.anim-tile { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; aspect-ratio: 1; display: grid; place-items: center; position: relative; }
.anim-tile .lbl { position: absolute; bottom: 14px; left: 18px; right: 18px; display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }

/* =========== Bio & posts =========== */
.bio-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.bio-card { background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; }
.bio-card .plat { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.bio-card .plat .name { font-family: var(--f-display); font-weight: 600; font-size: 16px; }
.bio-card .plat .ch { font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); }
.bio-card .lang { padding: 14px 0; border-top: 1px dashed var(--line); }
.bio-card .lang:first-of-type { border-top: 0; padding-top: 0; }
.bio-card .lang .tag { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.bio-card .lang.rtl { direction: rtl; text-align: right; }
.bio-card .lang.fa p { font-family: var(--f-fa); font-size: 14px; }
.bio-card .lang.ar p { font-family: var(--f-ar); font-size: 14px; }

/* =========== Don'ts =========== */
.donts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.dont {
  border: 1px solid rgba(255, 90, 106, 0.25);
  background: linear-gradient(180deg, rgba(255,90,106,0.04), transparent);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: flex; gap: 12px; align-items: flex-start;
}
.dont .x { width: 18px; height: 18px; border-radius: 50%; background: rgba(255,90,106,0.18); color: var(--danger); display: grid; place-items: center; font-size: 12px; flex-shrink: 0; margin-top: 2px; }

/* =========== Footer =========== */
.footer { padding: 64px 0 96px; border-top: 1px solid var(--line); margin-top: 64px; }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }

/* =========== Download chip (per-asset) =========== */
[data-dl] { position: relative; }
.dl-chip {
  position: absolute;
  top: 12px; right: 12px;
  display: inline-flex; gap: 4px;
  background: rgba(5, 7, 13, 0.78);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(170, 190, 255, 0.18);
  border-radius: 999px;
  padding: 4px;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.15s, transform 0.15s;
  pointer-events: none;
  z-index: 5;
}
[data-dl]:hover > .dl-chip,
[data-dl]:focus-within > .dl-chip { opacity: 1; transform: translateY(0); pointer-events: auto; }
.dl-chip button {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--ink-soft);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 9px;
  border-radius: 999px;
  cursor: pointer;
  transition: 0.12s;
}
.dl-chip button:hover { background: var(--accent); color: #04221F; }
.dl-chip button:disabled { opacity: 0.5; cursor: wait; }
/* on light surfaces flip the chip */
.logo-tile.light .dl-chip,
.tile.light .dl-chip { background: rgba(255,255,255,0.85); border-color: rgba(10,14,26,0.12); }
.logo-tile.light .dl-chip button,
.tile.light .dl-chip button { color: var(--ink-light); }

/* =========== Utilities =========== */
.muted { color: var(--ink-mute); }
.col-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.col-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gap-sm { gap: 8px; }
.flex { display: flex; }
.between { justify-content: space-between; }
.center { align-items: center; }
.wrap-row { flex-wrap: wrap; }
.divider { height: 1px; background: var(--line); margin: 32px 0; }

/* mobile */
@media (max-width: 900px) {
  .wrap { padding: 0 20px; }
  .section { padding: 64px 0; }
  .hero { padding: 80px 0 48px; }
  .hero .meta { grid-template-columns: repeat(2, 1fr); }
  .palette { grid-template-columns: repeat(3, 1fr); }
  .tier-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-board, .concept-board, .col-2, .col-3, .specimen-stack, .pattern-grid { grid-template-columns: 1fr; }
  .logo-variants { grid-template-columns: repeat(2, 1fr); }
  .icon-grid { grid-template-columns: repeat(4, 1fr); }
  .social-grid > * { grid-column: span 12; }
  .anim-grid { grid-template-columns: repeat(2, 1fr); }
  .donts { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
}