/* ==========================================================================
   GLACE BYTE IT SOLUTIONS — DESIGN SYSTEM TOKENS
   Modern Software Studio & Technology Education
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #050b16;
  --bg-surface: #081325;
  --bg-surface-elevated: #0d1e38;
  --bg-surface-hover: #12284c;
  --bg-card: rgba(13, 30, 56, 0.65);
  --bg-card-border: rgba(56, 189, 248, 0.14);
  --bg-glass: rgba(8, 19, 37, 0.78);

  /* Brand Accents */
  --primary: #1677ff;
  --primary-hover: #0958d9;
  --primary-glow: rgba(22, 119, 255, 0.35);
  --cyan: #00d9ff;
  --cyan-glow: rgba(0, 217, 255, 0.28);
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #1677ff 0%, #00d9ff 100%);
  --gradient-accent: linear-gradient(135deg, #a855f7 0%, #00d9ff 100%);
  --gradient-card: linear-gradient(180deg, rgba(22, 119, 255, 0.07) 0%, rgba(8, 19, 37, 0.6) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 217, 255, 0.15), transparent 70%);

  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-inverse: #030712;

  /* Borders & Shadows */
  --border-subtle: rgba(148, 163, 184, 0.12);
  --border-active: rgba(0, 217, 255, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px -8px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px -5px rgba(22, 119, 255, 0.3);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);

  /* Container & Spacing */
  --container-max: 1280px;
  --section-pad: clamp(4.5rem, 8vw, 7.5rem);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Atmosphere */
.gb-bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.gb-bg-glow {
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 15%, rgba(22, 119, 255, 0.12), transparent 45%),
    radial-gradient(circle at 80% 60%, rgba(0, 217, 255, 0.08), transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(168, 85, 247, 0.07), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 3.5vw, 2.5rem);
  padding-right: clamp(1.25rem, 3.5vw, 2.5rem);
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.heading-display {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.heading-section {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.028em;
  margin-bottom: 0.85rem;
}

.heading-card {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

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

.text-gradient-cyan {
  background: linear-gradient(135deg, #00d9ff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 0.85rem;
}

.eyebrow-pill {
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid rgba(0, 217, 255, 0.22);
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.eyebrow-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.section-desc {
  color: var(--text-muted);
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.7;
  max-width: 620px;
}

/* Standard Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 217, 255, 0.45);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-cyan {
  background: transparent;
  color: var(--cyan);
  border-color: rgba(0, 217, 255, 0.35);
}

.btn-outline-cyan:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: var(--cyan);
  color: #ffffff;
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1.05rem 2.15rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* Glass & Card Styles */
.gb-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.gb-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 20px -5px rgba(0, 217, 255, 0.12);
}

/* Utility Badges */
.badge-tech {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}