/* ===== TECHWORLD LAB - CSS VARIABLES & BASE ===== */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Exo+2:wght@300;400;500;600&display=swap');

:root {
  --primary: #00d4ff;
  --primary-dark: #0099bb;
  --secondary: #ff6b00;
  --accent: #00ff88;
  --bg-dark: #050a14;
  --bg-card: #0d1a2e;
  --bg-card2: #0a1628;
  --border: rgba(0, 212, 255, 0.2);
  --text-main: #e8f4fd;
  --text-muted: #7a9bb5;
  --text-bright: #ffffff;
  --glow: 0 0 20px rgba(0, 212, 255, 0.4);
  --glow-strong: 0 0 40px rgba(0, 212, 255, 0.7);
  --font-display: 'Orbitron', monospace;
  --font-body: 'Exo 2', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
  cursor: none;
}

/* Custom Cursor */
.cursor {
  width: 12px; height: 12px;
  background: var(--primary);
  border-radius: 50%;
  position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9999;
  transition: transform 0.1s ease;
  box-shadow: var(--glow);
}
.cursor-ring {
  width: 36px; height: 36px;
  border: 1.5px solid var(--primary);
  border-radius: 50%;
  position: fixed; top: 0; left: 0;
  pointer-events: none; z-index: 9998;
  transition: transform 0.15s ease, opacity 0.3s;
  opacity: 0.5;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* Utility */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 4px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: rgba(0,212,255,0.05);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-title span { color: var(--primary); }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 60px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  text-decoration: none;
  border: none; cursor: pointer;
  border-radius: var(--radius);
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: var(--bg-dark);
  box-shadow: var(--glow);
}
.btn-primary:hover {
  background: var(--text-bright);
  box-shadow: var(--glow-strong);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(0,212,255,0.1);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

/* Grid BG */
.grid-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Glow orbs */
.orb {
  position: absolute; border-radius: 50%;
  filter: blur(80px); pointer-events: none; z-index: 0;
}
.orb-1 { width: 500px; height: 500px; background: rgba(0,212,255,0.06); top: -100px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: rgba(255,107,0,0.05); bottom: 0; left: -100px; }
.orb-3 { width: 300px; height: 300px; background: rgba(0,255,136,0.04); top: 50%; left: 50%; }

/* Fade-in animation */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Card base */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--primary);
  box-shadow: var(--glow);
  transform: translateY(-4px);
}
.card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.03), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.card:hover::before { opacity: 1; }