/* =====================================================================
   LEON SOFTWARE — Design System
   Aesthetic: "Aurora Tech" — midnight navy canvas, logo-derived
   blue→amber aurora glows, circuit motifs, precise neon detailing.
   ===================================================================== */

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400..800&family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---------- Design Tokens ---------- */
:root {
  /* Brand palette — sampled from the Leon Software lion mark */
  --navy-950: #060912;
  --navy-900: #0a0f1f;
  --navy-850: #0d1326;
  --navy-800: #111a33;
  --navy-700: #16224a;
  --navy-600: #1d2f63;

  --blue-deep: #122a5f;
  --blue: #235798;
  --blue-bright: #3a86d4;
  --cyan: #64b1e8;
  --cyan-soft: #8fcdf2;

  --amber-deep: #8a4a22;
  --amber: #c8753a;
  --amber-bright: #e8923f;
  --gold: #f0b063;

  --ink: #eaf1fb;
  --ink-soft: #b4c2d9;
  --ink-dim: #76859e;
  --ink-faint: #4a576e;

  --line: rgba(120, 160, 220, 0.12);
  --line-strong: rgba(120, 160, 220, 0.24);

  /* Signature gradients */
  --grad-brand: linear-gradient(115deg, var(--cyan) 0%, var(--blue-bright) 38%, var(--amber-bright) 100%);
  --grad-brand-soft: linear-gradient(115deg, var(--blue) 0%, var(--amber) 120%);
  --grad-text: linear-gradient(100deg, var(--cyan-soft) 0%, #cfe0f5 30%, var(--gold) 100%);
  --grad-surface: linear-gradient(180deg, rgba(29, 47, 99, 0.18), rgba(13, 19, 38, 0.0));

  /* Glow */
  --glow-blue: 0 0 40px rgba(58, 134, 212, 0.35);
  --glow-amber: 0 0 40px rgba(232, 146, 63, 0.30);

  /* Typography */
  --font-display: 'Bricolage Grotesque', 'Outfit', sans-serif;
  --font-body: 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Spacing / rhythm */
  --maxw: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 18px;
  --radius-lg: 26px;
  --radius-sm: 12px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --header-h: 76px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-body);
  background: var(--navy-950);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
ul { list-style: none; }
::selection { background: rgba(232, 146, 63, 0.3); color: #fff; }

/* ---------- Atmospheric background ---------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 12% -5%, rgba(35, 87, 152, 0.30), transparent 60%),
    radial-gradient(800px 600px at 92% 8%, rgba(200, 117, 58, 0.16), transparent 55%),
    radial-gradient(1000px 800px at 70% 100%, rgba(35, 87, 152, 0.14), transparent 60%),
    var(--navy-950);
}

/* faint grid + grain overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(120, 160, 220, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 220, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(5rem, 10vw, 9rem);
}

/* ---------- Typography utilities ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: '';
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.h-display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  max-width: 18ch;
}

.section-lead {
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 56ch;
  margin-top: 1.1rem;
}

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section-head {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

/* ---------- Buttons ---------- */
.btn {
  --bd: rgba(120, 160, 220, 0.28);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.95em 1.5em;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  position: relative;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), background 0.4s var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }

.btn-primary {
  color: #06101f;
  background: var(--grad-brand);
  box-shadow: 0 8px 30px rgba(58, 134, 212, 0.35), inset 0 1px 0 rgba(255,255,255,0.4);
  font-weight: 700;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 44px rgba(232, 146, 63, 0.4), 0 0 0 1px rgba(255,255,255,0.1);
}

.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--bd);
  background: rgba(120, 160, 220, 0.04);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: rgba(120, 160, 220, 0.5);
  background: rgba(120, 160, 220, 0.1);
  transform: translateY(-3px);
}

.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translate(3px, -3px); }

/* ---------- Surface card ---------- */
.glass {
  background: linear-gradient(180deg, rgba(29, 47, 99, 0.22), rgba(13, 19, 38, 0.35));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
}

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed; top: -100px; left: 16px; z-index: 200;
  background: var(--blue-bright); color: #fff; padding: 0.6em 1em;
  border-radius: 8px; transition: top 0.3s;
}
.skip-link:focus { top: 16px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}