/* ══════════════════════════════════════════════
   AZIMUTH — brand theme: obsidian × magenta→cyan
   ══════════════════════════════════════════════ */

:root {
  --obsidian-950: #050508;
  --obsidian-900: #0a0a0f;
  --obsidian-850: #0e0e16;
  --obsidian-800: #14141e;
  --obsidian-700: #1d1d2a;
  --magenta: #ff2d95;
  --cyan: #2de0ff;
  --purple: #c86bff;
  --mist: #a1a1b2;
  --frost: #ededf4;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--magenta) transparent;
}

body {
  font-family: var(--font-display);
  background: var(--obsidian-900);
  color: var(--frost);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Ambient backgrounds ── */

.ambient {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(60% 45% at 12% 0%, rgba(255, 45, 149, 0.10), transparent 62%),
    radial-gradient(55% 45% at 92% 100%, rgba(45, 224, 255, 0.10), transparent 62%),
    radial-gradient(40% 30% at 70% 6%, rgba(124, 92, 255, 0.05), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 28%),
    var(--obsidian-900);
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(70% 60% at 50% 30%, black, transparent);
}

/* ── Gradient text helper ── */

.az-gradient-text {
  background: linear-gradient(92deg, var(--magenta) 4%, var(--purple) 42%, var(--cyan) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ── Glass panel ── */

.glass {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 14px;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--frost);
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: all 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-primary {
  background: linear-gradient(135deg, var(--magenta), var(--purple));
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover {
  filter: brightness(1.12);
  box-shadow: 0 0 30px -8px rgba(255, 45, 149, 0.45);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--mist);
}

.btn-ghost:hover {
  color: var(--frost);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn svg {
  flex-shrink: 0;
}

.btn-glow {
  transition: box-shadow 0.18s ease, transform 0.12s ease, filter 0.18s ease;
}

/* ── Navigation ── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 24px;
  background: linear-gradient(180deg, rgba(10, 10, 15, 0.92), transparent);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--frost);
}

.logo-icon {
  font-size: 20px;
  line-height: 1;
}

.logo-text {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}

.nav-link {
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.18s;
}

.nav-link:hover {
  color: var(--frost);
}

/* ── Hero ── */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 45, 149, 0.12), rgba(45, 224, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--mist);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 32px;
}

.hero-title {
  font-size: clamp(44px, 9vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-sub {
  max-width: 640px;
  color: var(--mist);
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-scroll-dot {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--magenta);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.6); }
}

/* ── Sections ── */

.section {
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--mist);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* ── Feature cards ── */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.feature-card {
  padding: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px -12px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 28px;
  color: var(--accent, var(--magenta));
  margin-bottom: 16px;
  display: inline-block;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--mist);
  font-size: 14px;
  line-height: 1.65;
}

/* ── Tech items ── */

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 32px;
  min-width: 140px;
  transition: transform 0.2s ease;
}

.tech-item:hover {
  transform: translateY(-2px);
}

.tech-name {
  font-weight: 600;
  font-size: 15px;
}

.tech-desc {
  font-size: 12px;
  color: var(--mist);
}

/* ── CTA ── */

.cta-section {
  text-align: center;
}

.cta-card {
  padding: 64px 40px;
  max-width: 680px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-text {
  color: var(--mist);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 32px;
}

/* ── Footer ── */

.footer {
  margin-top: 100px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  font-size: 13px;
  color: var(--mist);
  font-weight: 500;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-link {
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s;
}

.footer-link:hover {
  color: var(--frost);
}

/* ── Fade-in on scroll (JS) ── */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Utility ── */

.hide-mobile {
  display: inline;
}

@media (max-width: 640px) {
  .hide-mobile {
    display: none;
  }
  .nav-links {
    display: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .tech-grid {
    gap: 8px;
  }
  .cta-card {
    padding: 40px 24px;
  }
}