/* ==========================================================================
   NEXUS TECH & NFC - DESIGN SYSTEM & BASE STYLES
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Colors */
  --bg-dark: #07090e;
  --bg-card: rgba(18, 22, 34, 0.65);
  --bg-card-hover: rgba(28, 35, 54, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-glow: rgba(99, 102, 241, 0.4);

  /* Brand Accents */
  --primary: #6366f1;         /* Electric Indigo */
  --primary-light: #818cf8;
  --primary-glow: rgba(99, 102, 241, 0.35);
  
  --secondary: #8b5cf6;       /* Violet Tech */
  --secondary-glow: rgba(139, 92, 246, 0.35);

  --accent-green: #10b981;     /* Emerald NFC Active */
  --accent-green-glow: rgba(16, 185, 129, 0.35);

  --accent-cyan: #06b6d4;      /* Electric Cyan */
  --accent-amber: #f59e0b;     /* Gold Google Stars */

  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Shadows & Glows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
  --glow-box: 0 0 30px rgba(99, 102, 241, 0.25);
  --glow-box-green: 0 0 30px rgba(16, 185, 129, 0.25);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Normalize */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100vw;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Gradients & Mesh */
body::before {
  content: '';
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.08) 40%, rgba(7, 9, 14, 0) 70%);
  pointer-events: none;
  z-index: -1;
  filter: blur(60px);
}

body::after {
  content: '';
  position: fixed;
  bottom: -200px;
  right: -100px;
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, rgba(6, 182, 212, 0.05) 50%, rgba(7, 9, 14, 0) 70%);
  pointer-events: none;
  z-index: -1;
  filter: blur(80px);
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.2;
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-primary {
  background: linear-gradient(135deg, var(--primary-light) 0%, #a855f7 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-green {
  background: linear-gradient(135deg, #34d399 0%, var(--accent-green) 50%, #059669 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-full);
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}

.section-header h2 {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* Global Link Styles */
a {
  color: inherit;
  text-decoration: none;
}

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