/* XStreamIO Splash — modern dark tech aesthetic */

:root {
  --bg: #07090f;
  --bg-elevated: #0d111a;
  --bg-card: #111722;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.14);
  --text: #e8ecf4;
  --text-muted: #8b95a8;
  --text-dim: #5c6678;
  --accent: #3b9eff;
  --accent-2: #22d3ee;
  --accent-soft: rgba(59, 158, 255, 0.12);
  --green: #34d399;
  --purple: #a78bfa;
  --orange: #fb923c;
  --radius: 16px;
  --radius-sm: 10px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background effects */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.glow-1 {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, #1e40af 0%, transparent 70%);
  top: -180px;
  left: -120px;
}

.glow-2 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #0e7490 0%, transparent 70%);
  bottom: 10%;
  right: -100px;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7, 9, 15, 0.75);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041018;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.logo-mark.small {
  width: 28px;
  height: 28px;
  font-size: 0.68rem;
  border-radius: 7px;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(59, 158, 255, 0.25);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
}

.gradient-text {
  background: linear-gradient(105deg, var(--accent) 10%, var(--accent-2) 55%, #67e8f9 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 560px;
  margin: 0 auto 36px;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 158, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(59, 158, 255, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-hover);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Products */
.products {
  padding: 40px 0 100px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.card-icon.chat {
  background: rgba(59, 158, 255, 0.12);
  color: var(--accent);
}

.card-icon.unreal {
  background: rgba(167, 139, 250, 0.12);
  color: var(--purple);
}

.card-icon.health {
  background: rgba(52, 211, 153, 0.12);
  color: var(--green);
}

.card-icon.mfg {
  background: rgba(251, 146, 60, 0.12);
  color: var(--orange);
}

.product-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
  flex: 1;
  margin-bottom: 18px;
}

.card-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.card-tags li {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}

.card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

.card-link:hover {
  color: var(--accent-2);
}

/* Platform */
.platform {
  padding: 40px 0 100px;
}

.platform-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px;
}

.platform-content h2 {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.platform-content > p {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 1rem;
}

.platform-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.platform-features li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.platform-features strong {
  font-size: 0.95rem;
  font-weight: 600;
}

.platform-features span {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Code window */
.code-window {
  background: #0a0d14;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.code-body {
  padding: 20px 18px;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: #c9d1d9;
  overflow-x: auto;
}

.code-body .kw { color: #ff7b72; }
.code-body .type { color: #79c0ff; }
.code-body .fn { color: #d2a8ff; }

/* CTA */
.cta {
  padding: 20px 0 100px;
}

.cta-box {
  text-align: center;
  background: linear-gradient(160deg, rgba(59, 158, 255, 0.08), rgba(34, 211, 238, 0.05));
  border: 1px solid rgba(59, 158, 255, 0.18);
  border-radius: 24px;
  padding: 56px 32px;
}

.cta-box h2 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.cta-box p {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-copy {
  color: var(--text-dim);
  font-size: 0.85rem;
}

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

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
}

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

/* Responsive */
@media (max-width: 860px) {
  .platform-inner {
    grid-template-columns: 1fr;
    padding: 32px 24px;
  }

  .nav {
    display: none;
  }

  .hero {
    padding: 72px 0 60px;
  }
}

@media (max-width: 520px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: 40px 20px;
  }
}