/* ============================================================
   CORTEX — design tokens & base
   Warm, confident, premium. Apple precision + Claude warmth.
   ============================================================ */

/* ---- Fonts ---- */
@import url('https://fonts.cdnfonts.com/css/calibri');
@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,200..500;1,6..72,200..400&family=Instrument+Serif:ital@0;1&family=Space+Grotesk:wght@400;500;600;700&family=Sora:wght@400;500;600;700&family=Chakra+Petch:wght@500;600;700&family=Syncopate:wght@400;700&family=Michroma&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ============================================================
   TOKENS
   ============================================================ */
:root {
  /* font pairings (overridden by [data-font]) */
  --font-display: 'Calibri', 'Carlito', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Calibri', 'Carlito', 'Segoe UI', system-ui, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* light palette (default) — creamy white */
  --bg: #f1ebdd;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #fbf6ea 0%, #f3ecdc 46%, #ece3d0 100%);
  --bg-2: #e9e1cf;
  --surface: #faf5ea;
  --surface-2: #fffdf7;
  --ink: #211e17;
  --ink-2: #5c5648;
  --ink-3: #8f897a;
  --border: #e7dfcc;
  --border-strong: #d7ccb4;
  --overlay: rgba(28, 24, 16, 0.4);
  --shadow-color: 40 34 22;

  /* accent — GRAPHITE (monochrome luxe, glossy near-black primary) */
  --accent: oklch(0.27 0.008 260);
  --accent-hover: oklch(0.34 0.01 260);
  --accent-ink: #fff;
  --accent-soft: oklch(0.93 0.004 260);
  --accent-soft-2: oklch(0.88 0.005 260);
  --accent-line: oklch(0.8 0.006 260);
  --accent-2: oklch(0.4 0.02 260);
  --synapse: oklch(0.55 0.13 255);
  --grad: linear-gradient(115deg, var(--accent), var(--accent-2));
  --grad-glow: radial-gradient(circle, oklch(0.4 0.02 260 / 0.3), transparent 70%);

  /* brand mark (light) — solid black */
  --mark-1: #141518;
  --mark-2: #141518;
  --mark-core: #141518;
  --mark-glow: rgba(0, 0, 0, 0.28);

  /* radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* density (overridden by [data-density]) */
  --pad-card: 22px;
  --gap-grid: 18px;
  --row-h: 56px;
  --pad-section: 28px;

  /* shadows */
  --sh-sm: 0 1px 2px rgb(var(--shadow-color) / 0.05), 0 1px 3px rgb(var(--shadow-color) / 0.06);
  --sh-md: 0 2px 4px rgb(var(--shadow-color) / 0.04), 0 6px 16px rgb(var(--shadow-color) / 0.08);
  --sh-lg: 0 4px 8px rgb(var(--shadow-color) / 0.05), 0 18px 40px rgb(var(--shadow-color) / 0.12);
  --sh-xl: 0 8px 18px rgb(var(--shadow-color) / 0.08), 0 40px 80px rgb(var(--shadow-color) / 0.16);

  --maxw: 1440px;
}

/* ---- DARK ---- */
[data-theme="dark"] {
  --bg: #131009;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #1c1810 0%, #141009 52%, #0d0a05 100%);
  --bg-2: #0d0b06;
  --surface: #1c1812;
  --surface-2: #221d16;
  --ink: #f4efe4;
  --ink-2: #b1a99b;
  --ink-3: #7c7567;
  --border: #2c271e;
  --border-strong: #3b352a;
  --overlay: rgba(0, 0, 0, 0.6);
  --shadow-color: 0 0 0;

  --accent: oklch(0.72 0.17 45);
  --accent-hover: oklch(0.78 0.16 45);
  --accent-ink: #1a1206;
  --accent-soft: oklch(0.34 0.07 45);
  --accent-soft-2: oklch(0.4 0.09 45);
  --accent-line: oklch(0.5 0.1 45);
  --accent-2: oklch(0.82 0.15 70);
  --synapse: oklch(0.7 0.16 270);
  --grad: linear-gradient(115deg, var(--accent), var(--accent-2));
  --grad-glow: radial-gradient(circle, oklch(0.7 0.2 45 / 0.45), transparent 70%);

  /* brand mark (dark) — solid white */
  --mark-1: #f5f5f2;
  --mark-2: #f5f5f2;
  --mark-core: #f5f5f2;
  --mark-glow: rgba(255, 255, 255, 0.4);

  --sh-sm: 0 1px 2px rgb(0 0 0 / 0.4);
  --sh-md: 0 2px 6px rgb(0 0 0 / 0.4), 0 8px 20px rgb(0 0 0 / 0.45);
  --sh-lg: 0 6px 14px rgb(0 0 0 / 0.45), 0 22px 50px rgb(0 0 0 / 0.55);
  --sh-xl: 0 10px 24px rgb(0 0 0 / 0.5), 0 44px 90px rgb(0 0 0 / 0.6);
}

/* ============================================================
   ACCENT VARIANTS (vary hue, shared chroma/lightness)
   ============================================================ */
[data-accent="ember"] {
  --accent: oklch(0.605 0.19 38); --accent-hover: oklch(0.55 0.2 35);
  --accent-soft: oklch(0.95 0.04 42); --accent-soft-2: oklch(0.9 0.06 42);
  --accent-line: oklch(0.82 0.09 42);
  --accent-2: oklch(0.74 0.16 68); --synapse: oklch(0.6 0.16 268);
}
[data-theme="dark"][data-accent="ember"] {
  --accent: oklch(0.68 0.18 40); --accent-hover: oklch(0.74 0.17 42);
  --accent-ink: #1f0d05; --accent-soft: oklch(0.34 0.08 40);
  --accent-soft-2: oklch(0.4 0.1 40); --accent-line: oklch(0.5 0.12 40);
  --accent-2: oklch(0.78 0.15 70); --synapse: oklch(0.7 0.16 268);
}
[data-accent="cobalt"] {
  --accent: oklch(0.55 0.19 258); --accent-hover: oklch(0.48 0.2 258);
  --accent-soft: oklch(0.95 0.04 258); --accent-soft-2: oklch(0.9 0.06 258);
  --accent-line: oklch(0.82 0.09 258);
  --accent-2: oklch(0.66 0.17 220); --synapse: oklch(0.6 0.18 320);
}
[data-theme="dark"][data-accent="cobalt"] {
  --accent: oklch(0.68 0.17 258); --accent-hover: oklch(0.74 0.16 258);
  --accent-ink: #07101f; --accent-soft: oklch(0.34 0.08 258);
  --accent-soft-2: oklch(0.4 0.1 258); --accent-line: oklch(0.5 0.12 258);
  --accent-2: oklch(0.74 0.16 215); --synapse: oklch(0.7 0.17 322);
}
[data-accent="emerald"] {
  --accent: oklch(0.56 0.15 168); --accent-hover: oklch(0.49 0.155 168);
  --accent-soft: oklch(0.95 0.04 168); --accent-soft-2: oklch(0.9 0.06 168);
  --accent-line: oklch(0.82 0.08 168);
  --accent-2: oklch(0.72 0.16 135); --synapse: oklch(0.62 0.16 210);
}
[data-theme="dark"][data-accent="emerald"] {
  --accent: oklch(0.72 0.15 168); --accent-hover: oklch(0.78 0.14 168);
  --accent-ink: #06160f; --accent-soft: oklch(0.34 0.07 168);
  --accent-soft-2: oklch(0.4 0.09 168); --accent-line: oklch(0.5 0.1 168);
  --accent-2: oklch(0.8 0.16 132); --synapse: oklch(0.72 0.16 212);
}
[data-accent="violet"] {
  --accent: oklch(0.55 0.2 305); --accent-hover: oklch(0.48 0.21 305);
  --accent-soft: oklch(0.95 0.045 305); --accent-soft-2: oklch(0.9 0.065 305);
  --accent-line: oklch(0.82 0.09 305);
  --accent-2: oklch(0.64 0.2 350); --synapse: oklch(0.62 0.17 250);
}
[data-theme="dark"][data-accent="violet"] {
  --accent: oklch(0.7 0.18 305); --accent-hover: oklch(0.76 0.17 305);
  --accent-ink: #150a1f; --accent-soft: oklch(0.35 0.09 305);
  --accent-soft-2: oklch(0.41 0.11 305); --accent-line: oklch(0.5 0.13 305);
  --accent-2: oklch(0.72 0.19 348); --synapse: oklch(0.72 0.17 252);
}

/* ============================================================
   FONT PAIRINGS
   ============================================================ */
[data-font="editorial"] {
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Hanken Grotesk', system-ui, sans-serif;
}
[data-font="technical"] {
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
}

/* ============================================================
   DENSITY
   ============================================================ */
[data-density="comfortable"] {
  --pad-card: 28px; --gap-grid: 24px; --row-h: 66px; --pad-section: 38px;
}
[data-density="compact"] {
  --pad-card: 16px; --gap-grid: 12px; --row-h: 46px; --pad-section: 20px;
}

/* ============================================================
   BASE
   ============================================================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--bg-grad), var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.4s ease, color 0.3s ease;
}
::selection { background: var(--accent-soft-2); color: var(--ink); }

h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; letter-spacing: -0.02em; line-height: 1.04; font-weight: 700; }
[data-font="editorial"] h1, [data-font="editorial"] h2, [data-font="editorial"] h3 { font-weight: 400; letter-spacing: -0.01em; }

/* editorial serif display — the signature hero voice */
.serif {
  font-family: var(--font-serif); font-weight: 300; letter-spacing: -0.015em;
  line-height: 1.0; font-feature-settings: "liga" 1;
}
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* scrollbars */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 99px; border: 2px solid var(--bg); }
*::-webkit-scrollbar-track { background: transparent; }

/* ============================================================
   CARD STYLES (controlled by [data-card])
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-md);
  transition: transform 0.22s cubic-bezier(.2,.7,.3,1), box-shadow 0.22s ease, border-color 0.22s ease, background 0.3s ease;
}
[data-card="flat"] .card { background: var(--surface-2); border-color: transparent; box-shadow: none; }
[data-theme="dark"][data-card="flat"] .card { background: var(--surface-2); }
[data-card="outlined"] .card { background: transparent; border-color: var(--border-strong); box-shadow: none; }
[data-card="glass"] .card {
  background: color-mix(in oklch, var(--surface) 62%, transparent);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-color: color-mix(in oklch, var(--border-strong) 70%, transparent);
  box-shadow: var(--sh-lg);
}
.card.interactive { cursor: pointer; }
.card.interactive:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); border-color: var(--accent-line); }
[data-card="flat"] .card.interactive:hover { background: var(--surface); box-shadow: var(--sh-md); }

/* launch-center app card hover affordance */
.app-card .app-open { opacity: 0.45; }
.app-card:hover .app-open { opacity: 1; color: var(--accent); transform: translate(2px, -2px); }

/* ============================================================
   PRIMITIVES
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 14.5px; line-height: 1;
  padding: 11px 18px; border-radius: var(--r-pill); border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, color 0.18s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(180deg, color-mix(in oklch, var(--accent) 82%, white 18%), var(--accent));
  color: var(--accent-ink);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.22), 0 1px 2px rgb(var(--shadow-color)/0.25), 0 6px 18px rgb(var(--shadow-color)/0.18);
}
.btn-primary:hover {
  background: linear-gradient(180deg, color-mix(in oklch, var(--accent-hover) 82%, white 20%), var(--accent-hover));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.26), 0 2px 4px rgb(var(--shadow-color)/0.28), 0 10px 28px rgb(var(--shadow-color)/0.24);
  transform: translateY(-1px);
}
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--ink-3); }
.btn-soft { background: var(--accent-soft); color: var(--accent); }
.btn-soft:hover { background: var(--accent-soft-2); }
.btn-sm { padding: 8px 13px; font-size: 13px; }
.btn-icon { padding: 0; width: 40px; height: 40px; border-radius: var(--r-pill); }

/* elevated / raised buttons */
.btn-raise { box-shadow: 0 6px 18px rgb(var(--shadow-color)/0.18), 0 2px 5px rgb(var(--shadow-color)/0.14); }
.btn-raise:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgb(var(--shadow-color)/0.24), 0 4px 9px rgb(var(--shadow-color)/0.16); }
[data-theme="dark"] .btn-raise { box-shadow: 0 6px 18px rgba(0,0,0,0.5), 0 2px 5px rgba(0,0,0,0.4); }
[data-theme="dark"] .btn-raise:hover { box-shadow: 0 14px 32px rgba(0,0,0,0.6), 0 4px 9px rgba(0,0,0,0.45); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 600; padding: 5px 11px; border-radius: var(--r-pill);
  background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--border);
}
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: transparent; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.01em;
  padding: 3px 8px; border-radius: var(--r-pill); white-space: nowrap;
}
.badge-new { background: var(--accent-soft); color: var(--accent); }
.badge-dot { width: 6px; height: 6px; border-radius: 99px; background: currentColor; }

.eyebrow {
  font-family: var(--font-mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.04em; color: var(--ink-2);
}

.kbd {
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-3);
  border: 1px solid var(--border-strong); border-radius: 6px; padding: 2px 6px; background: var(--surface);
}

.input {
  font-family: var(--font-body); font-size: 14.5px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--r-md);
  padding: 11px 14px; width: 100%; transition: border-color 0.18s, box-shadow 0.18s;
}
.input::placeholder { color: var(--ink-3); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }

.divider { height: 1px; background: var(--border); border: 0; }

/* avatars */
.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 99px; font-weight: 700; font-family: var(--font-display);
  color: #fff; flex: none; letter-spacing: -0.01em; user-select: none;
}

/* Harvey Norman Commercial Project Division lockup (nav, beside Cortex mark).
   Inlined traced wordmark; recolours per theme via currentColor (--ink-2). */
.hn-cpd { display: inline-flex; align-items: center; flex: none; line-height: 0; color: var(--ink-2); }
.hn-cpd svg { height: 100%; width: auto; display: block; }

/* utility */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.muted { color: var(--ink-2); font-weight: 500; }
.faint { color: var(--ink-2); font-weight: 600; }
.mono { font-family: var(--font-mono); }
.fade-up { animation: fadeUp 0.5s cubic-bezier(.2,.7,.3,1); }
@keyframes fadeUp { from { transform: translateY(14px); } to { transform: none; } }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.spin-slow { animation: spin 22s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   CONCEPT — "synapse" brand system
   ============================================================ */
.grad-text {
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
}
.grad-fill { background: var(--accent); }
.glow { position: relative; }

/* neural mesh background (dark surfaces) */
.mesh {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
.mesh::before {
  content: ""; position: absolute; inset: -20%;
  background:
    radial-gradient(closest-side, oklch(0.62 0.2 40 / 0.35), transparent) -10% 20% / 55% 60%,
    radial-gradient(closest-side, oklch(0.6 0.16 268 / 0.3), transparent) 90% 15% / 50% 55%,
    radial-gradient(closest-side, oklch(0.74 0.16 68 / 0.22), transparent) 70% 95% / 60% 60%;
  background-repeat: no-repeat; filter: blur(8px);
}
/* fine dotted grid */
.dotgrid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(currentColor 1px, transparent 1px);
  background-size: 26px 26px; opacity: 0.5;
}

@keyframes pulse-node { 0%,100% { opacity: 0.45; } 50% { opacity: 1; } }
@keyframes drift { 0%,100% { transform: translate(0,0); } 50% { transform: translate(0,-14px); } }
@keyframes dash { to { stroke-dashoffset: -1000; } }

/* dark section helper — neutral charcoal (monochrome luxe) */
.dark-band {
  background: radial-gradient(120% 130% at 50% 0%, #23252b 0%, #131419 55%, #0c0d10 100%);
  color: #f3f4f0; position: relative; overflow: hidden;
  --ink: #f3f4f0; --ink-2: #b6b8b2; --ink-3: #84867f;
  --border: rgba(255,255,255,0.1); --border-strong: rgba(255,255,255,0.16);
  --surface: #1c1e24; --surface-2: #23252c;
}
[data-theme="dark"] .dark-band { background: radial-gradient(120% 130% at 50% 0%, #1c1e24 0%, #0d0e12 60%, #08090b 100%); }
.marquee-track { display: inline-flex; animation: marquee 32s linear infinite; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============================================================
   REFERENCE LANGUAGE — frosted feature cards, dark hero tile
   ============================================================ */
/* frosted glass feature card (always glass, regardless of card tweak) */
.feat-card {
  /* Liquid glass: a brighter top-left sheen layered over a low-opacity surface,
     refracting the backdrop through a strong blur + saturation. */
  background:
    linear-gradient(135deg, rgba(255,255,255,0.55), rgba(255,255,255,0.10) 42%, rgba(255,255,255,0.03)),
    color-mix(in oklch, var(--surface-2) 28%, transparent);
  backdrop-filter: blur(22px) saturate(1.7);
  -webkit-backdrop-filter: blur(22px) saturate(1.7);
  border: 1px solid color-mix(in oklch, #fff 65%, var(--border));
  border-radius: 22px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.85),
    inset 0 -1px 1px rgba(255,255,255,0.12),
    0 10px 30px rgba(10,12,16,0.12),
    var(--sh-md);
  padding: 18px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  cursor: pointer;
  position: relative; overflow: hidden;
  --feat-glow: rgba(83,108,255,0.32); --feat-ring: rgba(83,108,255,0.5);
  transition: transform 0.32s cubic-bezier(.2,.7,.3,1), box-shadow 0.32s ease, border-color 0.32s ease;
}
/* always-on specular highlight (top) + faint per-card colour refraction (bottom) */
.feat-card::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  border-radius: inherit;
  background:
    radial-gradient(130% 80% at 50% -16%, rgba(255,255,255,0.55), transparent 58%),
    radial-gradient(95% 75% at 50% 122%, var(--feat-glow), transparent 72%);
  opacity: 0.55; transition: opacity 0.32s ease;
}
.feat-card:hover::before { opacity: 0.9; }
.feat-card > * { position: relative; z-index: 1; }
.feat-card .icon-tile { transition: transform 0.4s cubic-bezier(.2,.8,.3,1.1), box-shadow 0.35s ease; }
.feat-card .icon-tile svg { display: block; transition: transform 0.4s cubic-bezier(.2,.8,.3,1.1); }
.feat-card:hover { transform: scale(1.05);
  box-shadow: 0 1px 0 rgba(255,255,255,0.6) inset, var(--sh-lg); }
/* the icon tile and its glyph tilt opposite ways, both grow */
.feat-card:hover .icon-tile { transform: rotate(9deg) scale(1.1);
  box-shadow: 0 8px 18px rgba(10,12,16,0.28), inset 0 1px 0 rgba(255,255,255,0.2); }
.feat-card:hover .icon-tile svg { transform: rotate(-9deg) scale(1.04); }
[data-theme="dark"] .feat-card {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.02) 42%, transparent),
    color-mix(in oklch, var(--surface) 26%, transparent);
  border-color: rgba(255,255,255,0.12);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    0 10px 30px rgba(0,0,0,0.32),
    var(--sh-md);
  --feat-glow: rgba(124,200,255,0.4); --feat-ring: rgba(124,200,255,0.55);
}

/* dark rounded-square icon tile (glossy charcoal) — inverts with theme */
.icon-tile {
  width: 46px; height: 46px; border-radius: 14px; flex: none;
  background: linear-gradient(160deg, #3a3d45, #1a1c21 70%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 4px 10px rgba(10,12,16,0.3);
  display: grid; place-items: center; color: #eef0f4;
}
[data-theme="dark"] .icon-tile {
  background: linear-gradient(160deg, #ffffff, #e6e6e1 75%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.85), 0 4px 12px rgba(0,0,0,0.45);
  color: #1a1b1e;
}

/* hero tile — intentionally OPPOSITE the page theme (poster contrast) */
.hero-tile {
  position: relative; border-radius: 42px; overflow: hidden;
  /* light page -> dark tile, white mark */
  --tile-line: rgba(255,255,255,0.045);
  --tile-glow: radial-gradient(circle, oklch(0.55 0.16 262 / 0.55), transparent 62%);
  --mark-1: #f4f5f7; --mark-2: #f4f5f7; --mark-core: #f4f5f7;
  background: radial-gradient(120% 120% at 50% 12%, #2b2e35 0%, #15171c 46%, #0a0b0e 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.14),
    inset 0 0 0 1px rgba(255,255,255,0.05),
    0 30px 80px -20px rgba(12,14,20,0.5),
    0 8px 24px -8px rgba(12,14,20,0.4);
}
.hero-tile::before {
  content:""; position:absolute; left:6%; right:6%; top:3px; height:46%;
  border-radius: 38px 38px 60% 60%;
  background: linear-gradient(rgba(255,255,255,0.12), transparent);
  pointer-events:none;
}
[data-theme="dark"] .hero-tile {
  /* dark page -> light tile, black mark */
  --tile-line: rgba(0,0,0,0.06);
  --tile-glow: radial-gradient(circle, oklch(0.5 0.13 262 / 0.16), transparent 62%);
  --mark-1: #141518; --mark-2: #141518; --mark-core: #141518;
  background: radial-gradient(120% 120% at 50% 12%, #ffffff 0%, #fbfbfb 50%, #f4f4f4 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.7),
    inset 0 0 0 1px rgba(0,0,0,0.04),
    0 30px 70px -24px rgba(0,0,0,0.5),
    0 8px 24px -10px rgba(0,0,0,0.4);
}
[data-theme="dark"] .hero-tile::before { background: linear-gradient(rgba(255,255,255,0.5), transparent); }

/* ============================================================
   BACKDROP OPTIONS (light only) — choose the main canvas tone
   ============================================================ */
[data-theme="light"][data-bg="cream"] {
  --bg: #f1ebdd; --bg-2: #e9e1cf; --surface: #faf5ea; --surface-2: #fffdf7;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #fbf6ea 0%, #f3ecdc 46%, #ece3d0 100%);
  --ink: #211e17; --ink-2: #5c5648; --ink-3: #8f897a; --border: #e7dfcc; --border-strong: #d7ccb4;
  --shadow-color: 40 34 22;
}
[data-theme="light"][data-bg="porcelain"] {
  --bg: #ebebe7; --bg-2: #e3e3de; --surface: #f7f7f3; --surface-2: #ffffff;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #f8f8f6 0%, #f0f0ec 46%, #e7e7e2 100%);
  --ink: #1a1b1c; --ink-2: #565759; --ink-3: #8b8c8e; --border: #e3e3dd; --border-strong: #d3d3cb;
  --shadow-color: 28 28 26;
}
[data-theme="light"][data-bg="mist"] {
  --bg: #e7eaec; --bg-2: #dfe3e6; --surface: #f4f6f7; --surface-2: #ffffff;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #f5f7f9 0%, #edf0f2 46%, #e3e7ea 100%);
  --ink: #181b1e; --ink-2: #53575c; --ink-3: #878c92; --border: #dfe3e6; --border-strong: #ced3d8;
  --shadow-color: 24 28 32;
}
[data-theme="light"][data-bg="sand"] {
  --bg: #ebe2d0; --bg-2: #e2d7c1; --surface: #f5eddd; --surface-2: #fffaef;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #f7f0e1 0%, #efe6d2 46%, #e6dbc3 100%);
  --ink: #241f15; --ink-2: #605844; --ink-3: #948b76; --border: #e0d5bd; --border-strong: #cfc09f;
  --shadow-color: 48 40 24;
}
[data-theme="light"][data-bg="rose"] {
  --bg: #efe6e2; --bg-2: #e7dad4; --surface: #f8f1ee; --surface-2: #fffbf9;
  --bg-grad: radial-gradient(130% 92% at 50% -12%, #f9f1ee 0%, #f1e7e2 46%, #e8dbd5 100%);
  --ink: #221b18; --ink-2: #5e5249; --ink-3: #93857c; --border: #e8dad3; --border-strong: #d8c4ba;
  --shadow-color: 44 32 28;
}
body { background: var(--bg-grad), var(--bg); }

/* ============================================================
   USER MANAGEMENT
   ============================================================ */
.page-title {
  font-family: var(--font-display); font-weight: 400; letter-spacing: -0.035em;
  line-height: 0.96; font-size: clamp(46px, 7.4vw, 92px); color: var(--ink);
}

/* segmented view toggle */
.seg { display: inline-flex; gap: 4px; padding: 4px; border-radius: var(--r-pill);
  background: var(--surface-2); border: 1px solid var(--border); box-shadow: var(--sh-sm); }
.seg button { border: none; background: transparent; cursor: pointer; display: inline-flex;
  align-items: center; gap: 8px; padding: 9px 17px; border-radius: var(--r-pill);
  font-family: var(--font-body); font-weight: 600; font-size: 14px; color: var(--ink-2);
  transition: all 0.18s ease; }
.seg button.on { background: linear-gradient(180deg, #34373f, #17191e); color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 2px 7px rgba(10,12,16,0.28); }
[data-theme="dark"] .seg button.on { background: linear-gradient(180deg,#f4f4f2,#d9d9d4); color: #16161a;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6), 0 2px 7px rgba(0,0,0,0.4); }

/* glossy obsidian / pearl primary (matches reference Get Started / Add User) */
.btn-obsidian {
  position: relative; overflow: hidden; color: #f5f6f8; border: 1px solid #050507;
  background: linear-gradient(180deg, #3a3d45 0%, #1b1d22 52%, #0b0c0f 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 2px 5px rgba(10,12,16,0.3), 0 10px 26px rgba(10,12,16,0.22);
}
.btn-obsidian::before { content:""; position:absolute; left:0; right:0; top:0; height:50%;
  background: linear-gradient(rgba(255,255,255,0.22), rgba(255,255,255,0)); pointer-events:none; }
.btn-obsidian:hover { transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.24), 0 3px 7px rgba(10,12,16,0.34), 0 14px 32px rgba(10,12,16,0.28); }
[data-theme="dark"] .btn-obsidian { color: #15161a; border-color: #ffffff;
  background: linear-gradient(180deg, #ffffff 0%, #e6e6e2 55%, #d4d4ce 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 2px 6px rgba(0,0,0,0.4), 0 12px 28px rgba(0,0,0,0.4); }
[data-theme="dark"] .btn-obsidian::before { background: linear-gradient(rgba(255,255,255,0.5), rgba(255,255,255,0)); }

/* brushed-metal search bar */
.search-metal { display: flex; align-items: center; gap: 13px; height: 58px; padding: 0 22px;
  border-radius: var(--r-pill); color: var(--ink-2);
  background: linear-gradient(180deg, #fcfcfc 0%, #e3e3e5 48%, #f1f1f2 100%);
  border: 1px solid #d2d2d5;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.95), inset 0 -2px 4px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.05); }
.search-metal input { flex: 1; border: none; outline: none; background: transparent;
  font-family: var(--font-body); font-size: 16px; color: var(--ink); }
.search-metal input::placeholder { color: #8a8a8d; }
[data-theme="dark"] .search-metal { border-color: #45464b; color: #cfd0d3;
  background: linear-gradient(180deg, #3b3c42 0%, #1f2025 50%, #2b2c31 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 1px 2px rgba(0,0,0,0.4); }
[data-theme="dark"] .search-metal input { color: #f0f0f2; }
[data-theme="dark"] .search-metal input::placeholder { color: #8a8b8f; }

/* checkbox (sidebar filters) */
.cbx { display: flex; align-items: center; gap: 11px; padding: 7px 0; cursor: pointer;
  font-size: 15px; font-weight: 500; color: var(--ink-2); user-select: none; transition: color 0.15s; }
.cbx .box { width: 20px; height: 20px; border-radius: 6px; flex: none; display: grid; place-items: center;
  border: 1.5px solid var(--border-strong); background: var(--surface-2); color: #fff; transition: all 0.15s; }
.cbx.on { color: var(--ink); }
.cbx.on .box { background: var(--accent); border-color: var(--accent); }
.cbx:hover .box { border-color: var(--ink-3); }

/* level pill + dot */
.lvl-pill { display: inline-flex; align-items: center; font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.01em; padding: 4px 11px; border-radius: var(--r-pill); }
.lvl-dot { width: 9px; height: 9px; border-radius: 99px; flex: none; }

/* layout */
.um-layout { display: grid; grid-template-columns: 270px 1fr; gap: 24px; align-items: start; }
.user-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.um-card-actions { display: grid; gap: 9px; margin-top: 18px; }

/* table */
.um-head, .um-row { display: grid; grid-template-columns: 2.1fr 1fr 1.25fr 1.05fr 0.85fr; gap: 18px; align-items: center; }
.um-head { padding: 17px 26px; border-bottom: 1px solid var(--border);
  font-size: 15px; font-weight: 700; color: var(--ink); }
.um-row { padding: 0 26px; min-height: 74px; border-bottom: 1px solid var(--border); transition: background 0.15s; }
.um-row:last-child { border-bottom: none; }
.um-row:hover { background: var(--surface-2); }

/* footer */
.ufooter { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  margin-top: 44px; padding: 26px 0 10px; border-top: 1px solid var(--border); }
.ufooter .links { display: flex; gap: 26px; flex-wrap: wrap; }
.foot-link, .ufooter .links a {
  font-size: 14px; font-weight: 700; letter-spacing: 0; text-transform: none;
  color: var(--ink); cursor: pointer; position: relative; transition: color 0.18s; }
.foot-link:hover, .ufooter .links a:hover { color: var(--ink); }
.foot-link::after, .ufooter .links a::after {
  content:""; position:absolute; left:0; right:0; bottom:-4px; height:2px; border-radius:2px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s cubic-bezier(.2,.8,.3,1); }
.foot-link:hover::after, .ufooter .links a:hover::after { transform: scaleX(1); }

@media (max-width: 1040px) {
  .um-layout { grid-template-columns: 1fr; }
  .user-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .um-head .col-apps, .um-row .col-apps { display: none; }
  .um-head, .um-row { grid-template-columns: 2.1fr 1fr 1.05fr 0.85fr; }
}
@media (max-width: 680px) {
  .user-grid { grid-template-columns: 1fr; }
  .um-head, .um-row { grid-template-columns: 1.6fr 1fr; }
  .um-head .col-sec, .um-head .col-act, .um-row .col-sec, .um-row .col-act { display: none; }
}

/* ============================================================
   ANTI-GRAVITY HOVER — 3D tilt (JS) + cursor-follow sheen
   ============================================================ */
/* will-change removed: permanent compositor layers rendered blurry on some
   GPUs (e.g. NVIDIA + Chromium). Hover transforms below still work fine. */
.user-grid > .card { position: relative; }
.feat-card::after, .user-grid > .card::after, .hero-tile::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: 4;
  background: radial-gradient(180px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.18), transparent 56%);
  opacity: 0; transition: opacity 0.3s ease;
}
.feat-card:hover::after, .user-grid > .card:hover::after, .hero-tile:hover::after { opacity: 1; }
[data-theme="dark"] .feat-card::after, [data-theme="dark"] .user-grid > .card::after {
  background: radial-gradient(180px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.1), transparent 56%);
}
@media (prefers-reduced-motion: reduce) {
  .feat-card, .hero-tile, .user-grid > .card { transform: none !important; }
}

/* cursor-follow glow (whole page) */
.ag-cursor {
  position: fixed; top: 0; left: 0; width: 460px; height: 460px; margin: -230px 0 0 -230px;
  border-radius: 50%; pointer-events: none; z-index: 30; opacity: 0;
  transition: opacity 0.5s ease, width 0.3s ease, height 0.3s ease;
  background: radial-gradient(circle, rgba(70,100,235,0.10), rgba(70,100,235,0.04) 38%, transparent 62%);
}
.ag-cursor.press { width: 360px; height: 360px; }
[data-theme="dark"] .ag-cursor {
  z-index: 30; mix-blend-mode: screen;
  background: radial-gradient(circle, rgba(150,200,255,0.18), rgba(120,170,255,0.06) 40%, transparent 64%);
}
@media (prefers-reduced-motion: reduce) { .ag-cursor { display: none; } }
@media (pointer: coarse) { .ag-cursor { display: none; } }

/* fit larger screens */
@media (min-width: 1600px) { :root { --maxw: 1560px; } }
@media (min-width: 1880px) { :root { --maxw: 1720px; } }
@media (min-width: 1460px) { .user-grid { grid-template-columns: repeat(4, 1fr); } }

/* ============================================================
   BRAND MARK — futuristic aperture + hover motion
   ============================================================ */
.cx-mark svg { transition: filter 0.45s ease; }
.cx-ring1, .cx-ring2, .cx-core {
  transform-box: view-box; transform-origin: 24px 24px;
  transition: transform 0.6s cubic-bezier(.22,.8,.28,1);
}
.cx-core { transition: transform 0.6s cubic-bezier(.22,.8,.28,1), r 0.4s ease; }
/* idle drift so the mark feels alive */
.cx-mark-i .cx-ring1, .cx-i .cx-ring1 { animation: cxDrift1 9s ease-in-out infinite; }
.cx-mark-i .cx-ring2, .cx-i .cx-ring2 { animation: cxDrift2 9s ease-in-out infinite; }
@keyframes cxDrift1 { 0%,100% { transform: rotate(0deg); } 50% { transform: rotate(7deg); } }
@keyframes cxDrift2 { 0%,100% { transform: rotate(0deg); } 50% { transform: rotate(-9deg); } }

/* hover: counter-rotate rings, bloom the core, ignite the glow */
.cx-mark-i:hover .cx-ring1, .cx-i:hover .cx-ring1 { transform: rotate(48deg); animation: none; }
.cx-mark-i:hover .cx-ring2, .cx-i:hover .cx-ring2 { transform: rotate(-62deg); animation: none; }
.cx-mark-i:hover .cx-core, .cx-i:hover .cx-core { transform: scale(1.42); }
.cx-mark-i:hover svg, .cx-i:hover svg { filter: drop-shadow(0 0 7px var(--mark-glow)); }
@media (prefers-reduced-motion: reduce) {
  .cx-ring1, .cx-ring2, .cx-core { animation: none !important; }
}

/* wordmark hover: widen tracking + tint to brand */
.cx-word { transition: letter-spacing 0.5s cubic-bezier(.22,.8,.28,1); }
.cx-i:hover .cx-word { letter-spacing: 0.12em; }
.cx-lockup { cursor: pointer; }

/* nav links — animated underline */
.navlink { background: transparent; border: none; cursor: pointer; font-family: inherit;
  font-weight: 600; font-size: 14.5px; padding: 8px 6px; color: var(--ink-2); position: relative;
  white-space: nowrap; transition: color 0.2s ease; }
.navlink:hover, .navlink.on { color: var(--ink); }
.navlink::after { content: ""; position: absolute; left: 6px; right: 6px; bottom: 2px; height: 2px;
  border-radius: 2px; background: currentColor; transform: scaleX(0); transform-origin: center;
  transition: transform 0.3s cubic-bezier(.2,.8,.3,1); }
.navlink:hover::after, .navlink.on::after { transform: scaleX(1); }
.navlink.on::after { opacity: 0.85; }

/* user menu rows */
.menu-row { display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 11px;
  border: none; background: transparent; cursor: pointer; border-radius: 10px; font-family: inherit;
  font-size: 14px; font-weight: 500; color: var(--ink); text-align: left; transition: background 0.15s; }
.menu-row:hover { background: var(--surface-2); }
.menu-row svg { color: var(--ink-3); }