/* ===========================================================
   MAK CET — Defense-grade engineering & sovereign AI
   Visual DNA shared with MAKonnect, hardened for serious industries
   =========================================================== */
:root {
  /* Deep navy / carbon — defense-grade dark (default) */
  --bg-0: #060912;
  --bg-1: #0b1020;
  --bg-2: #111830;
  --bg-3: #1a2244;
  --bg-navy: #1a2547;
  --bg-navy-deep: #0f1733;

  --line:   rgba(255,255,255,0.07);
  --line-2: rgba(255,255,255,0.13);
  --line-3: rgba(255,255,255,0.22);

  --text:   #eef2fb;
  --text-2: #aab4d0;
  --text-3: #6c7796;
  --text-4: #455070;

  /* Accents — restrained, defense palette */
  --a-steel:   #6a85b6;     /* steel blue — primary brand accent */
  --a-cyan:    #5fd4ff;     /* signal cyan — AI / live */
  --a-amber:   #f4b860;     /* alert amber — premium / attention */
  --a-mint:    #8fe3c5;     /* status mint — secure / online */
  --a-rose:    #f08c8c;     /* anomaly */
  --a-violet:  #a092ff;     /* AI agents */
  --a-copper:  #d99764;     /* warm premium */

  --logo-bg: transparent;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

/* Light theme override */
html.theme-light {
  --bg-0: #f6f7fb;
  --bg-1: #ffffff;
  --bg-2: #eef1f8;
  --bg-3: #e2e7f2;
  --bg-navy: #1a2547;
  --bg-navy-deep: #f0f3fa;

  --line:   rgba(26,37,71,0.10);
  --line-2: rgba(26,37,71,0.18);
  --line-3: rgba(26,37,71,0.28);

  --text:   #0b1020;
  --text-2: #465075;
  --text-3: #6b7596;
  --text-4: #8a95b5;

  --logo-bg: #1a2547;
}
html.theme-light .hero-section { background: var(--bg-0); }
html.theme-light .hero-bg-vignette { background: radial-gradient(1200px 700px at 50% 45%, transparent 35%, color-mix(in oklab, var(--bg-0) 92%, transparent) 100%); }
html.theme-light .hero-bg-grid { opacity: 0.4; }
html.theme-light .hl-rotator { color: #b45309; }
html.theme-light .hl-rotator-bar { background: #1a2547; }
html.theme-light .text-gradient-steel { background: linear-gradient(90deg, #1a2547 0%, #465075 70%); -webkit-background-clip: text; background-clip: text; color: transparent; }
html.theme-light .noise::before { opacity: 0.02; }
html.theme-light .btn-ghost { color: var(--text); }
html.theme-light .bg-navy { background: #0f1733; color: #eef2fb; }
html.theme-light .bg-navy * { color: inherit; }
html.theme-light .bg-navy .h-section,
html.theme-light .bg-navy .ai-sub,
html.theme-light .bg-navy p,
html.theme-light .bg-navy .cap-col-domain,
html.theme-light .bg-navy .cap-row-h { color: #eef2fb; }
html.theme-light .bg-navy .cap-row-d,
html.theme-light .bg-navy .comp-desc { color: #aab4d0; }
html.theme-light .noise::before { opacity: 0.02; }
html.theme-light .btn-ghost { color: var(--text); }
html.theme-light .btn-primary { background: #1a2547; color: #fff; }
html.theme-light .hero-section { background: var(--bg-0); }
html.theme-light .logo-mark { background: #1a2547; padding: 4px; }
html.theme-light .logo-mark img { filter: none; }

/* ─── Light-mode contrast hardening ─────────────────────── */
html.theme-light .text-gradient-steel { background: linear-gradient(90deg, #0b1020 0%, #465075 70%); -webkit-background-clip: text; background-clip: text; color: transparent; }
html.theme-light .eyebrow { color: #465075; }
html.theme-light .corner-label, html.theme-light .seq-num { color: #465075; }
html.theme-light .chip { background: #fff; color: #0b1020; border-color: rgba(26,37,71,0.18); }
html.theme-light .badge { color: #1a2547; border-color: rgba(26,37,71,0.22); }
html.theme-light .badge-cyan { background: rgba(14, 116, 144, 0.10); border-color: rgba(14, 116, 144, 0.40); color: #0e7490; }
html.theme-light .badge-amber { background: rgba(180, 83, 9, 0.10); border-color: rgba(180, 83, 9, 0.40); color: #b45309; }
html.theme-light .badge-mint { background: rgba(15, 118, 110, 0.10); border-color: rgba(15, 118, 110, 0.40); color: #0f766e; }
html.theme-light .badge-violet { background: rgba(91, 33, 182, 0.10); border-color: rgba(91, 33, 182, 0.40); color: #5b21b6; }
html.theme-light .btn-primary { background: #0b1020; color: #fff; }
html.theme-light .btn-primary:hover { background: #1a2547; }
html.theme-light ::selection { background: rgba(14, 116, 144, 0.22); color: #0b1020; }
html.theme-light .surface { background: #fff; border-color: var(--line-2); }
html.theme-light .surface-strong { background: #fff; border-color: var(--line-2); box-shadow: 0 1px 2px rgba(26,37,71,0.04); }
html.theme-light .site-header.scrolled { background: color-mix(in oklab, #ffffff 82%, transparent); border-bottom-color: var(--line-2); }
html.theme-light ::-webkit-scrollbar-track { background: var(--bg-0); }
html.theme-light ::-webkit-scrollbar-thumb { background: rgba(26,37,71,0.25); }
html.theme-light ::-webkit-scrollbar-thumb:hover { background: rgba(26,37,71,0.40); }
html.theme-light .kbd { background: #fff; color: #1a2547; border-color: rgba(26,37,71,0.18); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg-0); }
body {
  margin: 0;
  font-family: 'Geist', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg-0);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11", "tnum";
  letter-spacing: -0.005em;
  line-height: 1.5;
  overflow-x: hidden;
}

.font-mono { font-family: 'Geist Mono', ui-monospace, monospace; }
.font-serif-ital { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; letter-spacing: -0.02em; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ─── Container ─────────────────────────────────────────── */
.container-x {
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
@media (min-width: 1024px) { .container-x { padding-inline: 2rem; } }

/* ─── Typography utilities ──────────────────────────────── */
.h-display { font-weight: 500; letter-spacing: -0.035em; line-height: 0.96; }
.h-section { font-weight: 500; letter-spacing: -0.03em; line-height: 1.05; font-size: clamp(2rem, 4vw, 3.4rem); }
.eyebrow {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: 'Geist Mono', monospace;
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-3);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--a-cyan); box-shadow: 0 0 0 3px color-mix(in oklab, var(--a-cyan) 22%, transparent); }
.eyebrow .bar { width: 28px; height: 1px; background: var(--line-3); }

.chip {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .4rem .8rem; border-radius: 999px;
  border: 1px solid var(--line-2);
  background: color-mix(in oklab, var(--bg-1) 70%, transparent);
  backdrop-filter: blur(12px);
  font-family: 'Geist Mono', monospace; font-size: 11px;
  letter-spacing: .08em; text-transform: uppercase; color: var(--text-2);
}
.chip .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--a-mint); box-shadow: 0 0 0 3px color-mix(in oklab, var(--a-mint) 22%, transparent); }

.corner-label {
  font-family: 'Geist Mono', monospace; font-size: 10.5px;
  letter-spacing: .14em; text-transform: uppercase; color: var(--text-3);
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .85rem 1.35rem; border-radius: 8px;
  font-weight: 500; font-size: 13.5px; letter-spacing: .01em;
  border: 1px solid transparent;
  transition: transform .25s ease, background .25s ease, border-color .25s ease;
}
.btn-primary {
  background: var(--text); color: var(--bg-0);
}
.btn-primary:hover { transform: translateY(-1px); background: color-mix(in oklab, var(--text) 90%, var(--a-cyan)); }
.btn-ghost {
  background: transparent; color: var(--text); border-color: var(--line-2);
}
.btn-ghost:hover { background: color-mix(in oklab, var(--bg-2) 60%, transparent); border-color: var(--line-3); }
.btn-amber {
  background: linear-gradient(180deg, var(--a-amber), color-mix(in oklab, var(--a-amber) 80%, #000));
  color: #1a1306;
}
.btn-amber:hover { transform: translateY(-1px); }

/* ─── Surfaces ──────────────────────────────────────────── */
.surface {
  background: linear-gradient(180deg, color-mix(in oklab, var(--bg-2) 70%, transparent) 0%, color-mix(in oklab, var(--bg-1) 60%, transparent) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
}
.surface-strong {
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-lg);
}

/* ─── Hairlines / dividers ──────────────────────────────── */
.hair { height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }
.hair-v { width: 1px; background: linear-gradient(180deg, transparent, var(--line-2), transparent); }

/* ─── Reveal on scroll ──────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ─── Selection ─────────────────────────────────────────── */
::selection { background: color-mix(in oklab, var(--a-cyan) 35%, transparent); color: var(--text); }

/* ─── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--bg-navy); }

/* ─── Focus ─────────────────────────────────────────────── */
button:focus-visible, a:focus-visible { outline: 2px solid var(--a-cyan); outline-offset: 3px; border-radius: 6px; }

/* ─── Background motifs ─────────────────────────────────── */
.grid-bg {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
}
.grid-bg-fine {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 24px 24px;
}
.noise::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  opacity: .07; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ─── Header ────────────────────────────────────────────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  transition: background .35s ease, border-color .35s ease, backdrop-filter .35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: color-mix(in oklab, var(--bg-0) 78%, transparent);
  backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
}
.nav-link {
  position: relative; padding: .5rem .9rem; border-radius: 8px;
  font-size: 13.5px; font-weight: 500; color: var(--text);
  display: inline-flex; align-items: center; gap: .35rem;
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover { background: color-mix(in oklab, var(--bg-3) 50%, transparent); }
.nav-link[data-highlight="true"] {
  background: linear-gradient(180deg, color-mix(in oklab, var(--a-cyan) 18%, transparent), color-mix(in oklab, var(--a-cyan) 6%, transparent));
  border: 1px solid color-mix(in oklab, var(--a-cyan) 35%, transparent);
}
.nav-link[data-highlight="true"]::before {
  content:""; width: 6px; height: 6px; border-radius: 999px; background: var(--a-cyan); box-shadow: 0 0 8px var(--a-cyan); animation: blink 2.4s ease-in-out infinite;
}
@keyframes blink { 0%,100%{ opacity:.85; } 50%{ opacity: .35; } }

/* Mega-nav dropdown */
.mega {
  position: absolute; left: 50%; transform: translateX(-50%) translateY(8px);
  top: 100%;
  width: min(940px, 92vw);
  background: var(--bg-1);
  border: 1px solid var(--line-2);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 30px 80px rgba(0,0,0,.55);
  opacity: 0; pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
}
.mega.open { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(4px); }

/* ─── Tweaks panel ──────────────────────────────────────── */
.tweaks-panel {
  position: fixed; right: 18px; bottom: 18px; z-index: 80;
  width: 280px; padding: 16px;
  background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 14px;
  box-shadow: 0 30px 80px rgba(0,0,0,.6);
  display: none;
}
.tweaks-panel.open { display: block; }

/* ─── Helpers ───────────────────────────────────────────── */
.mask-fade-b { mask-image: linear-gradient(180deg, #000 0%, #000 60%, transparent 100%); }
.mask-fade-y { mask-image: linear-gradient(180deg, transparent 0%, #000 15%, #000 85%, transparent 100%); }
.mask-fade-x { mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%); }

.kbd {
  font-family: 'Geist Mono', monospace; font-size: 10.5px;
  padding: 2px 6px; border-radius: 4px;
  background: var(--bg-3); border: 1px solid var(--line-2); color: var(--text-2);
}

/* Premium gradient text */
.text-gradient-amber {
  background: linear-gradient(90deg, var(--a-amber) 0%, var(--a-copper) 60%, var(--a-amber) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.text-gradient-steel {
  background: linear-gradient(90deg, #c2d1ee 0%, var(--a-steel) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* Pill badge */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .25rem .55rem; border-radius: 4px;
  font-family: 'Geist Mono', monospace; font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid var(--line-2);
  color: var(--text-2);
}
.badge-cyan { background: color-mix(in oklab, var(--a-cyan) 16%, transparent); border-color: color-mix(in oklab, var(--a-cyan) 35%, transparent); color: var(--a-cyan); }
.badge-amber { background: color-mix(in oklab, var(--a-amber) 16%, transparent); border-color: color-mix(in oklab, var(--a-amber) 35%, transparent); color: var(--a-amber); }
.badge-mint { background: color-mix(in oklab, var(--a-mint) 16%, transparent); border-color: color-mix(in oklab, var(--a-mint) 35%, transparent); color: var(--a-mint); }
.badge-violet { background: color-mix(in oklab, var(--a-violet) 16%, transparent); border-color: color-mix(in oklab, var(--a-violet) 35%, transparent); color: var(--a-violet); }

/* Section padding */
.section { padding-top: 96px; padding-bottom: 96px; position: relative; }
.section-tight { padding-top: 64px; padding-bottom: 64px; }

/* Premium gold/amber line accents */
.accent-line {
  display: inline-block; width: 28px; height: 1px;
  background: linear-gradient(90deg, var(--a-amber), transparent);
  vertical-align: middle; margin-right: .55rem;
}

/* Number sequence labels */
.seq-num {
  font-family: 'Geist Mono', monospace; font-size: 11px;
  color: var(--text-3); letter-spacing: .12em;
}

/* Deep navy section variant */
.bg-navy { background: var(--bg-navy-deep); }
.bg-card { background: var(--bg-1); }

/* Animated dashes */
@keyframes dash-flow { to { stroke-dashoffset: -200; } }

/* Slow spin */
@keyframes spin-slow { to { transform: rotate(360deg); } }
.animate-spin-slow { animation: spin-slow 60s linear infinite; }

/* Hover lift utility */
.lift { transition: transform .35s cubic-bezier(.2,.7,.2,1), border-color .35s ease, background .35s ease; }
.lift:hover { transform: translateY(-3px); border-color: var(--line-3); }

/* ─── Full-bleed section bands ──────────────────────────── */
.sec-band {
  margin: 0; width: 100%; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--bg-navy-deep), var(--bg-0));
}
.sec-band img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: saturate(.9) contrast(1.03);
}
.sec-band::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, var(--bg-0) 0%, transparent 8%, transparent 80%, var(--bg-0) 100%);
}
.sec-band.no-image img { display: none; }
.sec-band-fallback { display: none; }
.sec-band.no-image .sec-band-fallback {
  position: absolute; inset: 0; display: block;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 85% 70% at 50% 50%, #000 30%, transparent 85%);
  opacity: .4;
}