:root {
  --bg-primary: #05060a;
  --bg-secondary: #0a0b14;
  --bg-card: #0e101f;
  --bg-card-hover: #13162b;
  --bg-elevated: #181b30;
  --brand-violet: #8b5cf6;
  --brand-cyan: #22d3ee;
  --brand-gold: #fbbf24;
  --brand-pink: #f472b6;
  --gradient-primary: linear-gradient(135deg, #8b5cf6, #22d3ee);
  --gradient-accent: linear-gradient(135deg, #fbbf24, #f472b6);
  --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 60%),
                   radial-gradient(ellipse at 80% 50%, rgba(34, 211, 238, 0.1) 0%, transparent 60%);
  --gradient-card: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(34, 211, 238, 0.05));
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;
  --border-color: rgba(139, 92, 246, 0.15);
  --glow-violet: 0 0 30px rgba(139, 92, 246, 0.3);
  --glow-cyan: 0 0 30px rgba(34, 211, 238, 0.3);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
  --section-py: 6rem;
  --container-px: 2rem;
  --container-max: 1200px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition-base); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

::selection { background: rgba(139, 92, 246, 0.3); color: var(--text-primary); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--brand-violet); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #7c3aed; }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-px); }
.section { padding: var(--section-py) 0; position: relative; }

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

.section-header { text-align: center; max-width: 700px; margin: 0 auto 4rem; }

.section-tag {
  display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--brand-violet); background: rgba(139, 92, 246, 0.1);
  padding: 0.4rem 1rem; border-radius: 100px; border: 1px solid rgba(139, 92, 246, 0.2); margin-bottom: 1rem;
}

.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.2; margin-bottom: 1rem; letter-spacing: -0.02em; }
.section-desc { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.7; }

.btn {
  display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.85rem 2rem;
  font-size: 0.95rem; font-weight: 600; border-radius: 12px; transition: var(--transition-base);
  position: relative; overflow: hidden;
}
.btn-primary { background: var(--gradient-primary); color: white; border: none; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow-violet); }
.btn-outline { background: transparent; color: var(--text-primary); border: 1.5px solid rgba(255,255,255,0.15); }
.btn-outline:hover { border-color: var(--brand-violet); background: rgba(139,92,246,0.1); transform: translateY(-2px); }
.btn-large { padding: 1rem 2.5rem; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

#preloader {
  position: fixed; inset: 0; z-index: 99999; background: var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; }
.loader-ring {
  width: 48px; height: 48px; border-radius: 50%; border: 3px solid transparent;
  border-top-color: var(--brand-violet); border-right-color: var(--brand-cyan);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

[data-aos] {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-aos].aos-animate { opacity: 1; transform: translateY(0); }
[data-aos].aos-animate:nth-child(2) { transition-delay: 0.1s; }
[data-aos].aos-animate:nth-child(3) { transition-delay: 0.2s; }
[data-aos].aos-animate:nth-child(4) { transition-delay: 0.3s; }
[data-aos].aos-animate:nth-child(5) { transition-delay: 0.4s; }
[data-aos].aos-animate:nth-child(6) { transition-delay: 0.5s; }