/* ============================================================
   TENSORIUM — Core Design System
   Metallic / cryptographic. Deep navy-black, chrome, electric
   cyan + violet glow. Geometric display + mono for data.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* --- Surfaces --- */
  --bg-0: #04060c;
  --bg-1: #070b14;
  --bg-2: #0a1020;
  --bg-3: #0e1526;
  --surface: rgba(150, 170, 210, 0.035);
  --surface-2: rgba(150, 170, 210, 0.06);
  --surface-hi: rgba(160, 180, 220, 0.09);

  /* --- Lines --- */
  --line: rgba(140, 165, 210, 0.12);
  --line-2: rgba(140, 165, 210, 0.20);
  --line-strong: rgba(160, 185, 230, 0.32);

  /* --- Chrome / text --- */
  --chrome-0: #f2f6fd;
  --chrome-1: #d7dfee;
  --chrome-2: #9aa6bd;
  --chrome-3: #6a778f;
  --chrome-4: #45506640;

  /* --- Accents --- */
  --cyan: #2fe6ff;
  --cyan-deep: #14b9d6;
  --blue: #4d8bff;
  --violet: #9a78ff;
  --violet-deep: #6d4dff;
  --mint: #43f5c0;
  --amber: #ffc24d;
  --danger: #ff6b7a;

  /* --- Glows --- */
  --glow-cyan: 0 0 0 1px rgba(47,230,255,.30), 0 0 28px -4px rgba(47,230,255,.45);
  --glow-soft: 0 0 40px -10px rgba(47,230,255,.35);
  --glow-violet: 0 0 50px -12px rgba(122,90,255,.45);

  /* --- Type --- */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* --- Geometry --- */
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 20px;
  --maxw: 1240px;
  --nav-h: 68px;

  /* --- Gradients --- */
  --grad-accent: linear-gradient(120deg, var(--cyan), var(--blue) 55%, var(--violet));
  --grad-text: linear-gradient(120deg, #eafcff, #9fd9ff 45%, #c5b6ff);
  --grad-chrome: linear-gradient(180deg, #ffffff, #c3ccdc 40%, #7d8aa3);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-display);
  background: var(--bg-0);
  color: var(--chrome-1);
  line-height: 1.6;
  font-size: 16px;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Page atmosphere: subtle radial wash + grid layers added per page */
.atmos {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 600px at 78% -10%, rgba(122,90,255,.18), transparent 60%),
    radial-gradient(1100px 700px at 10% 0%, rgba(47,230,255,.12), transparent 55%),
    radial-gradient(800px 800px at 50% 120%, rgba(77,139,255,.10), transparent 60%),
    var(--bg-0);
}
.grid-layer {
  position: fixed; inset: -2px; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(140,170,220,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,170,220,.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(1200px 900px at 50% 0%, #000 30%, transparent 85%);
  -webkit-mask-image: radial-gradient(1200px 900px at 50% 0%, #000 30%, transparent 85%);
}

::selection { background: rgba(47,230,255,.28); color: #fff; }

/* ---------- Type ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--chrome-0); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.2vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.7rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.5rem); }
p { margin: 0 0 1rem; color: var(--chrome-2); text-wrap: pretty; }
a { color: var(--cyan); text-decoration: none; }

.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono); font-size: .72rem; font-weight: 600;
  letter-spacing: .32em; text-transform: uppercase; color: var(--cyan);
  display: inline-flex; align-items: center; gap: .6rem;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: linear-gradient(90deg, var(--cyan), transparent); }
.grad-text { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.chrome-text {
  background: var(--grad-chrome); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { font-size: clamp(1.05rem, 1.5vw, 1.28rem); color: var(--chrome-2); line-height: 1.65; }
.muted { color: var(--chrome-3); }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head .lead { margin-top: 16px; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .6rem; cursor: pointer;
  font-family: var(--font-display); font-weight: 600; font-size: .94rem;
  padding: .8rem 1.4rem; border-radius: 11px; border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  white-space: nowrap; letter-spacing: .01em;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary {
  color: #04141a; position: relative;
  background: linear-gradient(120deg, #7af2ff, var(--cyan) 45%, #6fb6ff);
  box-shadow: 0 0 0 1px rgba(47,230,255,.4), 0 10px 30px -10px rgba(47,230,255,.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(47,230,255,.6), 0 16px 40px -12px rgba(47,230,255,.85); }
.btn-ghost {
  color: var(--chrome-1); background: var(--surface);
  border-color: var(--line-2); backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--line-strong); background: var(--surface-2); transform: translateY(-2px); color: var(--chrome-0); }
.btn-violet {
  color: #fff; background: linear-gradient(120deg, var(--violet), var(--violet-deep));
  box-shadow: 0 0 0 1px rgba(122,90,255,.4), 0 10px 30px -12px rgba(122,90,255,.7);
}
.btn-violet:hover { transform: translateY(-2px); box-shadow: 0 14px 38px -12px rgba(122,90,255,.85); }
.btn-sm { padding: .55rem 1rem; font-size: .84rem; }

/* ---------- Cards ---------- */
.card {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); backdrop-filter: blur(10px);
  transition: border-color .3s ease, transform .3s ease, background .3s ease;
}
.card-pad { padding: 26px; }
.card-hover:hover { border-color: var(--line-strong); transform: translateY(-4px); background: var(--surface-2); }
/* hairline glow on top edge */
.card-glow::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, rgba(47,230,255,.5), transparent 40%, transparent 60%, rgba(122,90,255,.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .6; transition: opacity .3s ease; pointer-events: none;
}
.card-glow:hover::before { opacity: 1; }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .45rem;
  font-family: var(--font-mono); font-size: .72rem; font-weight: 600;
  letter-spacing: .06em; padding: .32rem .66rem; border-radius: 7px;
  border: 1px solid var(--line-2); color: var(--chrome-2); background: var(--surface);
  text-transform: uppercase;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.badge-live { color: var(--mint); border-color: rgba(67,245,192,.3); background: rgba(67,245,192,.07); }
.badge-cyan { color: var(--cyan); border-color: rgba(47,230,255,.3); background: rgba(47,230,255,.07); }
.badge-violet { color: var(--violet); border-color: rgba(122,90,255,.3); background: rgba(122,90,255,.08); }
.badge-amber { color: var(--amber); border-color: rgba(255,194,77,.3); background: rgba(255,194,77,.07); }
.badge-danger { color: var(--danger); border-color: rgba(255,107,122,.3); background: rgba(255,107,122,.07); }
.badge-pulse .dot { animation: pulse-dot 1.8s ease-in-out infinite; }
@keyframes pulse-dot { 0%,100% { opacity:1; transform: scale(1); } 50% { opacity:.4; transform: scale(.7); } }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(5,8,16,.6); backdrop-filter: blur(18px) saturate(1.3);
  border-bottom: 1px solid var(--line);
}
.nav-inner { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-name { font-weight: 700; font-size: 1.12rem; color: var(--chrome-0); letter-spacing: -0.01em; }
.brand-name .sub { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.nav-links a {
  font-size: .9rem; font-weight: 500; color: var(--chrome-2); padding: .5rem .8rem; border-radius: 8px;
  transition: color .2s, background .2s; display: inline-flex; align-items: center; gap: .4rem;
}
.nav-links a:hover { color: var(--chrome-0); background: var(--surface); }
.nav-links a.active { color: var(--cyan); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; }

/* subdomain context pill in nav */
.ctx-pill {
  font-family: var(--font-mono); font-size: .72rem; color: var(--chrome-3);
  border: 1px solid var(--line); border-radius: 7px; padding: .3rem .6rem; background: var(--surface);
}
.ctx-pill b { color: var(--cyan); font-weight: 600; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 64px 0 40px; margin-top: 40px; position: relative; background: linear-gradient(180deg, transparent, rgba(122,90,255,.04)); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; }
.footer h5 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--chrome-3); margin: 0 0 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 11px; }
.footer ul a { color: var(--chrome-2); font-size: .92rem; font-weight: 500; transition: color .2s; }
.footer ul a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--line); }
.footer-bottom span { font-family: var(--font-mono); font-size: .78rem; color: var(--chrome-3); }

/* ---------- Stat tiles ---------- */
.stat-grid { display: grid; gap: 16px; }
.stat {
  padding: 22px; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--surface); position: relative; overflow: hidden;
  transition: border-color .3s, background .3s;
}
.stat:hover { border-color: var(--line-strong); background: var(--surface-2); }
.stat-label { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--chrome-3); margin-bottom: 10px; display:flex; align-items:center; gap:.5rem; }
.stat-value { font-family: var(--font-mono); font-size: 1.7rem; font-weight: 600; color: var(--chrome-0); letter-spacing: -0.01em; }
.stat-value .unit { font-size: .9rem; color: var(--chrome-3); font-weight: 500; margin-left: 4px; }

/* ---------- Terminal ---------- */
.terminal {
  border: 1px solid var(--line-2); border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, rgba(8,12,22,.94), rgba(5,8,16,.96));
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.04);
}
.terminal-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.02); }
.terminal-bar .dots { display: flex; gap: 7px; }
.terminal-bar .dots i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.terminal-bar .dots i:nth-child(1){ background:#ff5f57; } .terminal-bar .dots i:nth-child(2){ background:#febc2e; } .terminal-bar .dots i:nth-child(3){ background:#28c840; }
.terminal-bar .tt { font-family: var(--font-mono); font-size: .76rem; color: var(--chrome-3); margin-left: 8px; }
.terminal-body { padding: 22px 22px; font-family: var(--font-mono); font-size: .88rem; line-height: 1.85; overflow-x: auto; }
.terminal-body .ln { white-space: pre; }
.terminal-body .pr { color: var(--cyan); user-select: none; }
.terminal-body .cm { color: var(--chrome-3); }
.terminal-body .ok { color: var(--mint); }
.terminal-body .va { color: var(--violet); }
.terminal-body .fl { color: var(--amber); }
.cursor-blink::after { content: "▋"; color: var(--cyan); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Code inline + copy ---------- */
code.inline { font-family: var(--font-mono); font-size: .86em; background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: .12em .42em; color: var(--cyan); }
.copy-btn {
  font-family: var(--font-mono); font-size: .72rem; color: var(--chrome-2); cursor: pointer;
  border: 1px solid var(--line-2); background: var(--surface); border-radius: 7px; padding: .35rem .6rem;
  display: inline-flex; align-items: center; gap: .4rem; transition: all .2s;
}
.copy-btn:hover { color: var(--cyan); border-color: var(--line-strong); }
.copy-btn.copied { color: var(--mint); border-color: rgba(67,245,192,.4); }

/* ---------- Tables ---------- */
.tbl { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: .84rem; }
.tbl th { text-align: left; font-weight: 600; color: var(--chrome-3); text-transform: uppercase; letter-spacing: .1em; font-size: .68rem; padding: 13px 16px; border-bottom: 1px solid var(--line-2); white-space: nowrap; }
.tbl td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--chrome-1); white-space: nowrap; }
.tbl tbody tr { transition: background .2s; }
.tbl tbody tr:hover { background: var(--surface); }
.tbl a { color: var(--cyan); }
.tbl .num { color: var(--chrome-0); }
.mono-link { color: var(--cyan); font-family: var(--font-mono); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"]{ transition-delay:.08s; } .reveal[data-d="2"]{ transition-delay:.16s; } .reveal[data-d="3"]{ transition-delay:.24s; } .reveal[data-d="4"]{ transition-delay:.32s; } .reveal[data-d="5"]{ transition-delay:.4s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } * { scroll-behavior: auto; } }

/* ---------- Divider / misc ---------- */
.hr { height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); border: 0; margin: 0; }
.kicker-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.glow-line { height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent); opacity:.5; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-inner { padding: 0 18px; }
}