/* ============================================
   PARALLAX DESIGN SYSTEM v2.0
   Comprehensive Design System with Components
   ============================================ */

/* ============================================
   1. CSS VARIABLES & THEME SYSTEM
   ============================================ */
:root {
  /* Brand Colors */
  --color-primary: #686EEE;
  --color-primary-rgb: 104, 110, 238;
  --color-primary-hover: #5659d7;
  --color-secondary: #8B5CF6;
  --color-accent: #7C7FFF;
  
  /* Neutral Colors - Light Theme */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fc;
  --color-bg-tertiary: #f3f4f8;
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #5a5a6e;
  --color-text-muted: #9a9aae;
  
  /* Glass Effects */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(104, 110, 238, 0.1);
  --glass-blur: 20px;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #686EEE 0%, #8B5CF6 100%);
  --gradient-soft: linear-gradient(135deg, rgba(104, 110, 238, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
  --gradient-dark: linear-gradient(180deg, rgba(10, 10, 20, 0.95) 0%, rgba(10, 10, 20, 0.7) 100%);
  
  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(104, 110, 238, 0.15);
  
  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;
  
  /* Typography Scale */
  --font-xs: 11px;
  --font-sm: 13px;
  --font-base: 16px;    /* INCREASED from 15px */
  --font-lg: 18px;
  --font-xl: 24px;
  --font-2xl: 32px;
  --font-3xl: 48px;
  --font-4xl: 64px;
  
  /* Font Weights */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-black: 900;
  
  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 30;
  --z-modal: 40;
  --z-popover: 50;
  --z-tooltip: 60;
  --z-notification: 70;
  
  /* Breakpoints (for reference) */
  --breakpoint-xs: 480px;
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --color-bg-primary: #0a0a14;
  --color-bg-secondary: #0f0f1a;
  --color-bg-tertiary: #14141f;
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  --glass-bg: rgba(10, 10, 20, 0.8);
  --glass-border: rgba(104, 110, 238, 0.15);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(104, 110, 238, 0.25);
}

/* ============================================
   2. GLOBAL RESET & BASE STYLES
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

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

/* AUTOMATIC 90% SCALING FOR MAC/HIGH-DPI DISPLAYS */
/* Method 1: Font-size based scaling */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  html {
    font-size: 14.4px; /* 90% of 16px */
  }
}

/* Method 2: Direct zoom for high-DPI displays (more aggressive) */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    zoom: 0.9; /* Direct 90% zoom - works on Mac Safari, Chrome */
  }
}

/* Fine-tune for very high-DPI displays */
@media (-webkit-min-device-pixel-ratio: 3), (min-resolution: 288dpi) {
  html {
    font-size: 14.4px;
  }
  body {
    zoom: 0.9;
  }
}

/* Additional viewport-based scaling for large desktop screens */
@media (min-width: 1920px) and (-webkit-min-device-pixel-ratio: 2) {
  html {
    font-size: 14.4px; /* Maintain 90% on large high-DPI displays */
  }
}

/* Ensure consistent scaling on standard displays */
@media (min-width: 1440px) and (-webkit-max-device-pixel-ratio: 1.5) {
  html {
    font-size: 16px; /* Keep 100% on standard DPI displays */
  }
  body {
    zoom: 1; /* Reset zoom to 100% on standard displays */
  }
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--font-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
  overflow-x: hidden;
  transition: background-color var(--transition-base);
}

/* ============================================
   3. TYPOGRAPHY UTILITIES
   ============================================ */
.text-xs { font-size: var(--font-xs); }
.text-sm { font-size: var(--font-sm); }
.text-base { font-size: var(--font-base); }
.text-lg { font-size: var(--font-lg); }
.text-xl { font-size: var(--font-xl); }
.text-2xl { font-size: var(--font-2xl); }
.text-3xl { font-size: var(--font-3xl); }
.text-4xl { font-size: var(--font-4xl); }

.font-light { font-weight: var(--weight-light); }
.font-regular { font-weight: var(--weight-regular); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }
.font-black { font-weight: var(--weight-black); }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-primary); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

/* ============================================
   4. LAYOUT UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-4xl) 0;
}

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-evenly { justify-content: space-evenly; }

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   5. SPACING UTILITIES
   ============================================ */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

.p-0 { padding: 0; }
.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }
.p-2xl { padding: var(--space-2xl); }

.px-xs { padding-left: var(--space-xs); padding-right: var(--space-xs); }
.px-sm { padding-left: var(--space-sm); padding-right: var(--space-sm); }
.px-md { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-lg { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.px-xl { padding-left: var(--space-xl); padding-right: var(--space-xl); }

.py-xs { padding-top: var(--space-xs); padding-bottom: var(--space-xs); }
.py-sm { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-md { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

/* ============================================
   6. RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 1280px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-3xl) 0;
  }
  
  .md\:hidden { display: none; }
  .md\:block { display: block; }
  .md\:flex { display: flex; }
  .md\:grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
  .md\:flex-col { flex-direction: column; }
  .md\:gap-md { gap: var(--space-md); }
  .md\:text-center { text-align: center; }
}

@media (max-width: 480px) {
  .sm\:hidden { display: none; }
  .sm\:block { display: block; }
  .sm\:flex { display: flex; }
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
  .sm\:flex-col { flex-direction: column; }
  .sm\:gap-sm { gap: var(--space-sm); }
  .sm\:text-sm { font-size: var(--font-sm); }
}

/* ============================================
   7. COMPONENT UTILITIES
   ============================================ */
.card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-base);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
}

/* Hover removed - only hero buttons should animate */

.btn-secondary {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

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

/* Loading states */
.skeleton {
  background: linear-gradient(90deg, 
    var(--color-bg-tertiary) 25%, 
    var(--color-bg-secondary) 50%, 
    var(--color-bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Focus states */
.focus-visible:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Disabled states */
.disabled,
:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Animation classes */
.animate-fade-in {
  animation: fadeIn var(--transition-base);
}

.animate-slide-up {
  animation: slideUp var(--transition-base);
}

.animate-scale {
  animation: scale var(--transition-base);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes scale {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}