/* ============================================
   Edge Global Styles
   Clean, modern dark theme
   ============================================ */

/* CSS Custom Properties - Edge Brand Colors */
:root {
  /* Primary Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f8f8;
  --color-bg-tertiary: #f0f0f0;
  
  /* Text Colors */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  
  /* Accent Colors */
  --color-accent: #00ff88;
  --color-accent-hover: #00cc6e;
  --color-accent-alpha: rgba(0, 255, 136, 0.1);
  
  /* Border Colors */
  --color-border: #e0e0e0;
  --color-border-light: #eeeeee;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-xxl: 3rem;
  --font-size-display: clamp(2.5rem, 8vw, 5rem);
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Container */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-accent);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Typography Styles */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-display);
}

h2 {
  font-size: var(--font-size-xxl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Utility Classes */
.text-accent {
  color: var(--color-accent);
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Responsive Breakpoints */
/* Mobile: default (320px+) */
/* Tablet: 768px+ */
/* Desktop: 1024px+ */
/* Large: 1440px+ */

@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --container-padding: 3rem;
  }
}

@media (min-width: 1440px) {
  :root {
    --container-padding: 4rem;
  }
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-accent-alpha);
  color: var(--color-text-primary);
}

/* ============================================
   Scroll Animations
   ============================================ */

/* Fade in up animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Animation classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for children */
.stagger-children > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children > *:nth-child(3) { transition-delay: 200ms; }
.stagger-children > *:nth-child(4) { transition-delay: 300ms; }
.stagger-children > *:nth-child(5) { transition-delay: 400ms; }
.stagger-children > *:nth-child(6) { transition-delay: 500ms; }

/* ============================================
   Page Transitions
   ============================================ */

main {
  animation: fadeIn 0.4s ease-out;
}

/* ============================================
   Mobile Responsiveness Improvements
   ============================================ */

/* Extra small devices (320px+) */
@media (max-width: 374px) {
  :root {
    --container-padding: 1rem;
    --font-size-display: clamp(2rem, 10vw, 3rem);
    --font-size-xxl: 2rem;
    --font-size-xl: 1.5rem;
  }
  
  /* Ensure text doesn't overflow */
  h1, h2, h3 {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
  }
}

/* Small devices (375px - 424px) */
@media (min-width: 375px) and (max-width: 424px) {
  :root {
    --container-padding: 1.25rem;
    --font-size-display: clamp(2.25rem, 9vw, 3.5rem);
  }
}

/* Medium mobile (425px - 767px) */
@media (min-width: 425px) and (max-width: 767px) {
  :root {
    --container-padding: 1.5rem;
  }
}

/* Ensure images don't overflow */
img, video, svg {
  max-width: 100%;
  height: auto;
}

/* Prevent horizontal scroll */
body {
  overflow-x: hidden;
}

/* Touch-friendly tap targets */
button, a {
  min-height: 44px;
  min-width: 44px;
}

/* Reduce motion for users who prefer it */
@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;
  }
  
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}