/* ─── Nocturne tokens (subset used by the site) ─────────────────────────── */
:root {
  --color-bg: #0f1524;
  --color-surface: #1b2434;
  --color-text: #e9e9ed;
  --color-accent: #6aa6e2;
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  --color-neutral-100: #f2f6fc;
  --color-neutral-200: #e1e9f4;
  --color-neutral-300: #c9d5e6;
  --color-neutral-400: #aab7cc;
  --color-neutral-500: #8b98ad;
  --color-neutral-600: #6d7a8e;
  --color-neutral-700: #525d6e;
  --color-neutral-800: #39414f;
  --color-neutral-900: #232932;

  --color-accent-100: #f1f6fd;
  --color-accent-200: #dceafb;
  --color-accent-300: #b8d6f6;
  --color-accent-400: #8bbcec;
  --color-accent-500: #5f9dda;
  --color-accent-600: #3f7cb8;
  --color-accent-700: #2d5c8d;
  --color-accent-800: #1f4064;
  --color-accent-900: #152a42;

  --font-body: "Inter", system-ui, sans-serif;
  --font-heading: "Inter", system-ui, sans-serif;
}

/* ─── Base ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; background: #070b14; }
body {
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading); font-weight: 500;
  line-height: 1.12; letter-spacing: -0.015em; margin: 0;
}
img { display: block; max-width: 100%; }
a { color: var(--color-text); text-decoration: none; }
a:hover { color: var(--color-accent-300); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

/* ─── Liquid glass ──────────────────────────────────────────────────────── */
.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}
.liquid-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg, rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.15) 20%, rgba(255,255,255,0) 40%, rgba(255,255,255,0) 60%, rgba(255,255,255,0.15) 80%, rgba(255,255,255,0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* ─── Hues + neon hover ─────────────────────────────────────────────────── */
.hue-azure  { --glow: oklch(72% 0.14 245 / 0.5); --glow-strong: oklch(80% 0.14 245 / 0.85); }
.hue-cyan   { --glow: oklch(78% 0.13 220 / 0.5); --glow-strong: oklch(84% 0.13 220 / 0.85); }
.hue-indigo { --glow: oklch(68% 0.14 275 / 0.5); --glow-strong: oklch(78% 0.14 275 / 0.85); }
.hue-teal   { --glow: oklch(80% 0.11 195 / 0.45); --glow-strong: oklch(86% 0.11 195 / 0.85); }

.neon { transition: box-shadow .35s ease, background .35s ease; }
.neon:hover {
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.14), 0 0 22px -4px var(--glow), 0 10px 44px -12px var(--glow);
  background: rgba(255,255,255,0.035);
}
.neon:hover::before {
  background: linear-gradient(180deg, var(--glow-strong) 0%, rgba(255,255,255,0.22) 28%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.22) 72%, var(--glow-strong) 100%);
}

/* ─── 3D tilt cards ─────────────────────────────────────────────────────── */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform .18s ease-out, box-shadow .35s ease, background .35s ease;
  will-change: transform;
}
.tilt-card .spot {
  position: absolute; inset: 0; opacity: 0; pointer-events: none;
  transition: opacity .3s ease;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), var(--glow), transparent 72%);
}
.tilt-card:hover .spot { opacity: 0.5; }

/* ─── Nav ───────────────────────────────────────────────────────────────── */
.nav { position: relative; z-index: 20; padding: 14px 40px; }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1120px; margin: 0 auto;
}
.nav-brand {
  display: flex; align-items: center; gap: 14px;
  font-weight: 600; font-size: 22px; color: var(--color-neutral-100);
}
.nav-brand:hover { color: var(--color-neutral-100); }
.nav-mark {
  width: 72px; height: 72px; display: block;
  margin: -6px 0;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-link {
  color: rgba(233,233,237,0.75);
  font-size: 13.5px; font-weight: 500;
}
.nav-link:hover, .nav-link.is-active, .nav-link[aria-current="page"] { color: var(--color-neutral-100); }

.nav-cta {
  background: var(--color-accent-800);
  border: 1px solid var(--color-accent-600);
  border-radius: 999px;
  padding: 9px 24px;
  font-size: 13.5px; font-weight: 500;
  color: var(--color-accent-100);
  transition: box-shadow .3s ease, background .3s ease;
}
.nav-cta:hover {
  background: var(--color-accent-600);
  border-color: var(--color-accent-400);
  color: var(--color-neutral-100);
  box-shadow: 0 0 24px -2px rgba(106,166,226,0.65), 0 0 60px -18px rgba(106,166,226,0.8);
}
.nav-cta:active { background: var(--color-accent-500); }

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn-primary {
  display: flex; align-items: center; gap: 10px;
  background: var(--color-neutral-100);
  border: none; border-radius: 999px;
  color: var(--color-neutral-900);
  font-size: 13.5px; font-weight: 500; font-family: var(--font-body);
  cursor: pointer;
  transition: box-shadow .3s ease, background .3s ease;
}
.btn-primary:hover {
  background: var(--color-accent-200);
  color: var(--color-neutral-900);
  box-shadow: 0 0 28px -4px rgba(106,166,226,0.75), 0 0 70px -16px rgba(106,166,226,0.9);
}
.btn-primary:active { background: var(--color-accent-300); }
.btn-primary:disabled { cursor: default; opacity: 0.6; }

.btn-glass {
  border-radius: 999px;
  padding: 13px 30px;
  font-size: 13.5px; font-weight: 500;
  color: var(--color-neutral-100);
}
.btn-glass:hover { color: var(--color-neutral-100); }

.icon-btn {
  border-radius: 999px; padding: 14px;
  color: rgba(233,233,237,0.8);
  display: flex;
}
.icon-btn:hover { color: var(--color-neutral-100); }

/* ─── Kicker ────────────────────────────────────────────────────────────── */
.kicker { display: flex; align-items: center; gap: 12px; }
.kicker-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent); }
.kicker-text {
  font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  color: rgba(233,233,237,0.75); font-weight: 500;
}

/* ─── Headings ──────────────────────────────────────────────────────────── */
h1.serif, h2.serif, .serif { font-family: 'Instrument Serif', serif; font-weight: 400; }
.em-gradient {
  background: linear-gradient(92deg, #eaf2fb 0%, #6aa6e2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 20px rgba(106,166,226,0.42));
}

/* ─── Form fields ───────────────────────────────────────────────────────── */
.field {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-neutral-700);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--color-neutral-100);
  font-size: 14px;
  font-family: var(--font-body);
  outline: none;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.field::placeholder { color: rgba(233,233,237,0.4); }
.field:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 18px -6px rgba(106,166,226,0.7);
}
textarea.field { resize: vertical; }
select.field { appearance: none; -webkit-appearance: none; }
select.field:focus { border-color: var(--color-accent); box-shadow: none; }
.field option { background: #16202f; }

/* ─── Section rules — Nocturne fading dividers ──────────────────────────── */
.section-rule {
  height: 1px; border: 0;
  width: 100%;
  margin: 0;
  background: linear-gradient(to right,
    transparent, var(--color-divider) 48px,
    var(--color-divider) calc(100% - 48px), transparent);
}

/* ─── Layout helpers ────────────────────────────────────────────────────── */
.wrap { max-width: 1120px; margin: 0 auto; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.grid-2-tight { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 56px;
}
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  gap: 48px;
}
.demo-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
}
.demo-row.is-flipped { grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); }
.demo-row.is-flipped .demo-frame { order: 2; }
.demo-frame { border-radius: 18px; padding: 10px; }
.demo-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  background: #060a12;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-2, .grid-2-tight, .grid-3, .hero-grid, .contact-grid, .demo-row, .demo-row.is-flipped {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
  .demo-row.is-flipped .demo-frame { order: 0; }
  .hero-portrait { height: min(56vh, 460px) !important; }
  .contact-card { margin-top: 0 !important; }
}
@media (max-width: 640px) {
  .nav { padding: 12px 20px; }
  .nav-inner { flex-wrap: wrap; row-gap: 10px; }
  .nav-links { gap: 10px 14px; margin-left: auto; flex-wrap: wrap; justify-content: flex-end; }
  .nav-brand span, .nav-cta { white-space: nowrap; }
  .nav-brand { font-size: 18px; gap: 10px; }
  .nav-mark { width: 52px; height: 52px; margin: -4px 0; }
  .section-pad { padding-left: 20px !important; padding-right: 20px !important; }
  .form-row { grid-template-columns: minmax(0, 1fr) !important; }
}