/* ==========================================================================
   AD'S DIGITAL BUSINESS SOLUTIONS - CORE STYLESHEET
   Design System, Tokens, Global Reset, Typography & Layout
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400;500;600;700;800&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Colors */
  --bg-primary: #07080C;
  --bg-secondary: #0D0F17;
  --bg-card: #121520;
  --bg-card-hover: #181C2B;
  --bg-glass: rgba(13, 15, 23, 0.78);
  --bg-glass-card: rgba(18, 21, 32, 0.65);

  /* Accents */
  --accent-blue: #3346FF;
  --accent-blue-light: #5263FF;
  --accent-blue-glow: rgba(51, 70, 255, 0.35);
  --accent-cyan: #00F0FF;
  --accent-cyan-glow: rgba(0, 240, 255, 0.25);
  --accent-coral: #FF5A36;
  --accent-coral-glow: rgba(255, 90, 54, 0.25);
  --accent-green: #5CE0A0;
  --accent-purple: #8A3FFC;

  /* Text Colors */
  --text-white: #FFFFFF;
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-dim: #475569;

  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(51, 70, 255, 0.6);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px var(--accent-blue-glow);
  --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.6);

  /* Fonts */
  --font-heading: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --container-max: 1240px;
  --container-wide: 1400px;
  --header-height: 76px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100vh;
  background: radial-gradient(circle at 50% 0%, rgba(51, 70, 255, 0.12) 0%, rgba(7, 8, 12, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

img, video, svg {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-white);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(2rem, 3.8vw, 3.2rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(1.3rem, 2.2vw, 1.85rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.7;
}

.mono {
  font-family: var(--font-mono);
}

/* Container & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.sec-py {
  padding-top: 110px;
  padding-bottom: 110px;
}

.sec-pt {
  padding-top: 110px;
}

.sec-pb {
  padding-bottom: 110px;
}

@media (max-width: 768px) {
  .sec-py {
    padding-top: 70px;
    padding-bottom: 70px;
  }
  .sec-pt {
    padding-top: 70px;
  }
  .sec-pb {
    padding-bottom: 70px;
  }
}

/* Eyebrow / Sub-tag */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-blue-light);
  margin-bottom: 14px;
  background: rgba(51, 70, 255, 0.1);
  border: 1px solid rgba(51, 70, 255, 0.25);
  padding: 5px 14px;
  border-radius: var(--radius-full);
}

.eyebrow .dot {
  color: var(--accent-coral);
}

.eyebrow-white {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}

/* Section Header Component */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 56px;
  gap: 32px;
}

.section-head.center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.section-head.center p {
  max-width: 680px;
}

.section-head h2 {
  max-width: 650px;
}

.section-head p {
  max-width: 480px;
  font-size: 1.05rem;
}

@media (max-width: 860px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

/* Text Gradients */
.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 20%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-accent {
  background: linear-gradient(135deg, #FFFFFF 10%, var(--accent-cyan) 60%, var(--accent-blue-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Scroll Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }