@layer base, components, utilities;

@layer base {
  :root {
    color-scheme: dark;
    --bg-0: #05060c;
    --bg-1: #090f1f;
    --panel: rgba(10, 18, 34, 0.78);
    --text: #e9f2ff;
    --muted: #9fb0c7;
    --border: rgba(122, 154, 196, 0.28);
    --accent-cyan: #6ef4ff;
    --accent-violet: #b38bff;
    --accent-lime: #8dffb0;
    --glow-cyan: rgba(110, 244, 255, 0.35);
    --glow-violet: rgba(179, 139, 255, 0.35);
    --grad-hero: linear-gradient(120deg, #39166a 0%, #1963b8 45%, #081021 100%);
    --grad-accent: linear-gradient(135deg, #66f3ff 0%, #b38bff 100%);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --space-1: 6px;
    --space-2: 10px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 32px;
    --space-6: 48px;
    --space-7: 64px;
    --space-8: 96px;
    --shadow-soft: 0 18px 40px rgba(6, 10, 20, 0.45);
    --shadow-glow: 0 0 24px rgba(110, 244, 255, 0.2);
    --font-heading: "Space Grotesk Variable", "Space Grotesk", "Inter", sans-serif;
    --font-body: "Inter Variable", "Inter", system-ui, sans-serif;
  }

  * {
    box-sizing: border-box;
  }

  body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--bg-0);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

  a {
    color: inherit;
  }

  p {
    margin: 0 0 var(--space-3);
  }

  h1, h2, h3, h4 {
    font-family: var(--font-heading);
    letter-spacing: -0.01em;
    margin: 0 0 var(--space-3);
  }

  h1 {
    font-size: clamp(2.6rem, 2.4rem + 1.6vw, 4.2rem);
    line-height: 1.05;
  }

  h2 {
    font-size: clamp(2rem, 1.4rem + 1.2vw, 3rem);
    line-height: 1.15;
  }

  h3 {
    font-size: clamp(1.2rem, 1.05rem + 0.4vw, 1.6rem);
  }

  ul {
    margin: 0;
    padding-left: 20px;
  }

  li {
    margin-bottom: var(--space-2);
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: url("assets/starfield.svg");
    background-size: 900px 900px;
    opacity: 0.5;
    z-index: -3;
    pointer-events: none;
  }

  body::after {
    content: "";
    position: fixed;
    inset: 0;
    background:
      radial-gradient(520px 320px at 10% 10%, rgba(110, 244, 255, 0.12), transparent 60%),
      radial-gradient(640px 380px at 90% 0%, rgba(179, 139, 255, 0.16), transparent 60%),
      radial-gradient(900px 520px at 60% 90%, rgba(19, 45, 92, 0.5), transparent 70%);
    z-index: -2;
    pointer-events: none;
  }
}

@layer components {
  .container {
    width: min(1120px, 92vw);
    margin: 0 auto;
    padding: var(--space-7) 0 var(--space-8);
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(20px) saturate(150%);
    background: rgba(6, 10, 20, 0.75);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }

  .site-header.scrolled {
    border-color: rgba(122, 154, 196, 0.35);
    box-shadow: 0 12px 30px rgba(2, 8, 20, 0.7);
  }

  .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3) 0;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.02em;
  }

  .brand img {
    height: 44px;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .nav-links a {
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--text);
    transition: background 0.2s ease;
  }

  .nav-links a:hover {
    background: rgba(255, 255, 255, 0.08);
  }

  .button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    background: var(--grad-accent);
    color: #04121c;
    box-shadow: var(--shadow-soft), 0 0 18px rgba(110, 244, 255, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft), 0 0 24px rgba(110, 244, 255, 0.6);
  }

  .button.secondary {
    background: rgba(11, 20, 36, 0.7);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: none;
  }

  .button:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 3px;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(10, 18, 34, 0.8);
    color: var(--muted);
    font-size: 0.85rem;
  }

  .hero {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: var(--space-7);
    background: var(--panel);
    border: 1px solid rgba(122, 154, 196, 0.4);
    box-shadow: var(--shadow-soft);
  }

  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(120deg, rgba(6, 10, 20, 0.92) 0%, rgba(8, 14, 28, 0.55) 55%, rgba(6, 10, 20, 0.94) 100%),
      url("assets/images/hero-nebula-tech.svg");
    background-size: cover;
    background-position: center;
    animation: nebula-drift 18s ease-in-out infinite;
    z-index: 0;
  }

  .hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(420px 240px at 18% 10%, rgba(110, 244, 255, 0.25), transparent 70%),
      radial-gradient(480px 260px at 82% 20%, rgba(179, 139, 255, 0.2), transparent 70%);
    z-index: 0;
  }

  .hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-6);
    align-items: center;
  }

  .hero-card {
    background: rgba(8, 14, 28, 0.85);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-soft);
  }

  .hero-card ul {
    margin-top: var(--space-2);
  }

  .hero-media {
    display: grid;
    gap: var(--space-3);
  }

  .hero-image {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
  }

  .section {
    margin-top: var(--space-7);
  }

  .section-title {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
  }

  .section-title::after {
    content: "";
    height: 3px;
    width: 64px;
    border-radius: 999px;
    background: var(--grad-accent);
    box-shadow: 0 0 12px rgba(110, 244, 255, 0.35);
  }

  .cards {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-3);
    margin-top: var(--space-4);
    container-type: inline-size;
  }

  .card {
    background: linear-gradient(180deg, rgba(12, 22, 40, 0.9), rgba(8, 14, 28, 0.86));
    border-radius: var(--radius-md);
    padding: var(--space-4);
    border: 1px solid rgba(122, 154, 196, 0.35);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
  }

  .card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 0%, rgba(110, 244, 255, 0.12) 40%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
  }

  .card:hover::after {
    opacity: 1;
  }

  .span-4 {
    grid-column: span 4;
  }

  .span-6 {
    grid-column: span 6;
  }

  .span-12 {
    grid-column: span 12;
  }

  .icon {
    width: 26px;
    height: 26px;
    color: var(--accent-cyan);
    margin-bottom: var(--space-2);
  }

  .eyebrow {
    color: var(--muted);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
  }

  .muted {
    color: var(--muted);
  }

  .timeline {
    display: grid;
    gap: var(--space-3);
    margin-top: var(--space-4);
  }

  .timeline-step {
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
  }

  .timeline-step span {
    font-weight: 700;
    color: var(--accent-cyan);
  }

  .pricing {
    display: grid;
    gap: var(--space-3);
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .faq {
    display: grid;
    gap: var(--space-3);
  }

  .footer {
    margin-top: var(--space-7);
    padding-top: var(--space-5);
    border-top: 1px solid var(--border);
    color: var(--muted);
  }

  .footer-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--space-4);
    align-items: flex-start;
  }

  .footer-links {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
  }

  .footer-links a {
    text-decoration: none;
    color: var(--muted);
    font-weight: 600;
  }

  .footer-links a:hover {
    color: var(--text);
  }

  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  @keyframes nebula-drift {
    0% { background-position: center; }
    50% { background-position: 55% 40%; }
    100% { background-position: center; }
  }

  @container (max-width: 780px) {
    .span-4, .span-6 {
      grid-column: span 12;
    }
  }
}

@layer utilities {
  .stack {
    display: grid;
    gap: var(--space-3);
  }

  .cta-row {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    align-items: center;
  }

  .center {
    align-items: center;
  }

  .hero-labels {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .section-media {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
  }
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .container {
    padding-top: var(--space-6);
  }

  .brand img {
    height: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}