:root {
  --bg-dark: #040810;
  --bg-card: rgba(14, 23, 38, 0.75);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --blue-primary: #0066ff;
  --blue-glow: rgba(0, 102, 255, 0.35);
  --cyan-accent: #00d2ff;
  --text-main: #f0f4f9;
  --text-muted: #8c9ba stroke;
  --text-dim: #94a3b8;
  --line-color: rgba(255, 255, 255, 0.06);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-lg: 16px;
  --radius-md: 10px;
}

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

html { scroll-behavior: smooth; color-scheme: dark; }

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 102, 255, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(0, 210, 255, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
}

main { flex: 1; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* Glassmorphism & 3D Layering */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.card-3d {
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.card-3d:hover {
  transform: translateY(-8px) rotateX(2deg) rotateY(-2deg);
  border-color: rgba(0, 102, 255, 0.4);
  box-shadow: 0 25px 50px -12px var(--blue-glow);
}

/* Navigation Header */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(4, 8, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-color);
}

.nav {
  min-height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.logo span { color: var(--cyan-accent); }
.logo small {
  display: block;
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-dim);
  text-transform: uppercase;
}

nav { display: flex; gap: 28px; align-items: center; font-size: 14px; font-weight: 500; }
nav a { color: var(--text-dim); transition: color 0.2s; }
nav a:hover, nav a.active { color: var(--text-main); }

/* Custom Buttons */
.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--blue-primary), #0044cc);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  box-shadow: 0 10px 25px var(--blue-glow);
  transition: all 0.3s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(0, 102, 255, 0.5);
}

.button.outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: none;
}

.button.outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--cyan-accent);
}

/* Typography & Hero */
.eyebrow {
  color: var(--cyan-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(40px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #ffffff 0%, #a1b2cf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -1px;
  margin-bottom: 16px;
}

p { color: var(--text-dim); font-size: 16px; line-height: 1.7; }

section { padding: 100px 0; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

/* Interactive Forms */
.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 15px;
  margin-top: 8px;
  outline: none;
  transition: border-color 0.3s;
}

.form-control:focus { border-color: var(--blue-primary); }

footer {
  padding: 40px 0;
  border-top: 1px solid var(--line-color);
  font-size: 13px;
  color: var(--text-dim);
}

@media (max-width: 768px) {
  nav { display: none; }
  section { padding: 60px 0; }
  }