/* ===================================
   GC (GRAFFITI CHAMPIONS) STYLESHEET
   Simple, maintainable CSS with progressive enhancement
   Compatible with legacy browsers worldwide
   =================================== */

/* ===================================
   1. CSS VARIABLES (from GC Style Guide)
   =================================== */
:root {
  /* Colors - Foundation */
  --color-white: #FFFFFF;
  --color-off-white: #F5F5F5;
  --color-very-light-gray: #E8E8E8;
  --color-light-gray: #D0D0D0;
  --color-mid-gray: #808080;
  --color-dark-gray: #5A5A5A;
  --color-near-black: #1C1C1C;
  --color-black: #000000;

  /* Colors - Accents */
  --color-electric-green: #39FF14;
  --color-muted-green: #2DD10D;
  --color-deep-teal: #1A5F5F;
  --color-burnt-orange: #CC5500;

  /* Typography */
  --font-headline: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing (8px grid) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 80px;

  /* Border Radius */
  --radius-sm: 4px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.0, 0.0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
}

/* ===================================
   2. FONT IMPORTS
   =================================== */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@700&family=Inter:wght@400&display=swap');

/* ===================================
   3. BASE STYLES
   =================================== */
* {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  /* Fallback fonts for older browsers */
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  /* Fallback color */
  color: #1C1C1C;
  color: var(--color-near-black);
  background-color: #FFFFFF;
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: #F5F5F5;
  background-image: none;
}

/* ===================================
   4. TYPOGRAPHY
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 24px 0;
  margin: 0 0 var(--space-md) 0;
  color: #1C1C1C;
  color: var(--color-near-black);
}

h1 {
  font-size: 60px;
  line-height: 1.1;
}

h2 {
  font-size: 36px;
}

h3 {
  font-size: 24px;
}

h4 {
  font-size: 20px;
}

p {
  margin: 0 0 24px 0;
  margin: 0 0 var(--space-md) 0;
}

a {
  color: #1A5F5F;
  color: var(--color-deep-teal);
  text-decoration: none;
  transition: color 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: color var(--transition-fast);
}

a:hover {
  color: #39FF14;
  color: var(--color-electric-green);
}

/* ===================================
   5. LAYOUT
   =================================== */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Content sections with white background for readability */
.content-section {
  background: rgba(255, 255, 255, 0.95);
  /* Vendor prefix for Safari 9+ */
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 48px 20px;
  padding: var(--space-xl) 20px;
  margin-bottom: 32px;
  margin-bottom: var(--space-lg);
}

/* ===================================
   6. HERO SECTION
   =================================== */
.hero {
  text-align: center;
  padding: 48px 0;
  padding: var(--space-xl) 0;
  margin-bottom: 32px;
  margin-bottom: var(--space-lg);
  background:
    linear-gradient(to bottom,
      rgba(255, 255, 255, 0.35) 0%,
      rgba(255, 255, 255, 0.35) 60%,
      rgba(245, 245, 245, 0.7) 85%,
      #F5F5F5 100%
    ),
    url('../images/gc-images/GC-3000_Street_portrait_of_defiant_16-year-old_girl_leaning_aga_688883a4-cbe5-4de6-8ecf-43b60510fb14.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hero h1 {
  margin-bottom: 16px;
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
}

.hero-description {
  font-size: 18px;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto 48px auto;
  margin: 0 auto var(--space-lg) auto;
  color: #5A5A5A;
  color: var(--color-dark-gray);
}

/* ===================================
   7. BUTTONS
   =================================== */
.btn-primary {
  display: inline-block;
  /* Flexbox with vendor prefixes */
  display: -webkit-inline-flex;
  display: inline-flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  padding: 16px 32px;
  padding: var(--space-sm) var(--space-lg);
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #1C1C1C;
  color: var(--color-near-black);
  background-color: #39FF14;
  background-color: var(--color-electric-green);
  border: none;
  border-radius: 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
  min-height: 48px;
  text-decoration: none;
}

.btn-primary:hover {
  background-color: #2DD10D;
  background-color: var(--color-muted-green);
  color: #1C1C1C;
  color: var(--color-near-black);
}

/* Transform effects only for browsers that support them */
@supports (transform: scale(1.05)) {
  .btn-primary:hover {
    transform: scale(1.05);
  }

  .btn-primary:active {
    transform: scale(0.98);
  }
}

.btn-secondary {
  display: inline-block;
  display: -webkit-inline-flex;
  display: inline-flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  padding: 14px 30px;
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #1C1C1C;
  color: var(--color-near-black);
  background-color: transparent;
  border: 2px solid #1C1C1C;
  border: 2px solid var(--color-near-black);
  border-radius: 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
  min-height: 48px;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: #1C1C1C;
  background-color: var(--color-near-black);
  color: #FFFFFF;
  color: var(--color-white);
}

@supports (transform: scale(1.05)) {
  .btn-secondary:hover {
    transform: scale(1.05);
  }
}

/* ===================================
   8. SECTIONS
   =================================== */
.section {
  padding: 48px 0;
  padding: var(--space-xl) 0;
  margin-bottom: 32px;
  margin-bottom: var(--space-lg);
}

/* Games Section - Solid Stronger Teal below image */
.section:nth-of-type(2) {
  background-color: #D4E8E8; /* Stronger Teal fills space below image */
  background-image:
    linear-gradient(to bottom, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    url('../images/gc-images/GC-3000_Medium_shot_of_young_teen_artist_standing_before_their__b65be2ae-63b0-4ecb-9468-663168ef9a17.jpg');
  background-size: auto, contain;
  background-position: center top;
  background-repeat: no-repeat;
}

/* Creative Tools Section - Solid Stronger Green below image */
.section:nth-of-type(3) {
  background-color: #E0FFE0; /* Stronger Green fills space below image */
  background-image:
    linear-gradient(to bottom, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.35)),
    url('../images/gc-images/GC-3000_Medium_shot_of_young_teen_artist_standing_before_their__40581eed-234a-4a48-b104-ca44e87cd5da.jpg');
  background-size: auto, contain;
  background-position: center top;
  background-repeat: no-repeat;
}

.section-title {
  font-size: 36px;
  margin-bottom: 24px;
  margin-bottom: var(--space-md);
  text-align: center;
}

.section-description {
  font-size: 18px;
  color: #5A5A5A;
  color: var(--color-dark-gray);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px auto;
  margin: 0 auto var(--space-xl) auto;
}

/* ===================================
   9. GAMES SECTION (Grid with Flexbox fallback)
   =================================== */
.games-grid {
  /* Flexbox fallback for older browsers */
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
  margin: -8px;
  margin-top: 32px;
  margin-top: var(--space-lg);
}

/* Modern browsers: CSS Grid */
@supports (display: grid) {
  .games-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    gap: var(--space-sm);
    margin: 0;
    margin-top: 32px;
    margin-top: var(--space-lg);
  }
}

.game-card {
  /* Flexbox fallback: full width on mobile */
  -webkit-flex: 1 1 100%;
  flex: 1 1 100%;
  margin: 8px;
  background: #FFFFFF;
  background: var(--color-white);
  border: 1px solid #E8E8E8;
  border: 1px solid var(--color-very-light-gray);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
  text-decoration: none;
  color: inherit;
  display: block;
}

/* Remove margin when using Grid */
@supports (display: grid) {
  .game-card {
    margin: 0;
  }
}

.game-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  box-shadow: var(--shadow-lg);
}

@supports (transform: translateY(-4px)) {
  .game-card:hover {
    transform: translateY(-4px);
  }
}

.game-card-image {
  width: 100%;
  /* Fallback: padding hack for 1:1 aspect ratio (works in all browsers) */
  position: relative;
  padding-top: 100%;
  background: #F5F5F5;
  background: var(--color-off-white);
  overflow: hidden;
}

.game-card-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Modern browsers: use aspect-ratio */
@supports (aspect-ratio: 1 / 1) {
  .game-card-image {
    padding-top: 0;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .game-card-image img {
    position: static;
  }
}

.game-card-content {
  padding: 16px;
  padding: var(--space-sm);
}

.game-card-title {
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 8px;
  margin-bottom: var(--space-xs);
}

.game-card-status {
  display: inline-block;
  background: #39FF14;
  background: var(--color-electric-green);
  color: #1C1C1C;
  color: var(--color-near-black);
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 4px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  margin-bottom: 8px;
  margin-bottom: var(--space-xs);
}

/* ===================================
   10. TOOLS/EFFECTS SECTION (Grid with Flexbox fallback)
   =================================== */
.tools-grid {
  /* Flexbox fallback */
  display: -webkit-flex;
  display: flex;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
  margin: -8px;
  margin-top: 32px;
  margin-top: var(--space-lg);
}

@supports (display: grid) {
  .tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    gap: var(--space-sm);
    margin: 0;
    margin-top: 32px;
    margin-top: var(--space-lg);
  }
}

.tool-card {
  /* Flexbox fallback: full width */
  -webkit-flex: 1 1 100%;
  flex: 1 1 100%;
  margin: 8px;
  background: #F5F5F5;
  background: var(--color-off-white);
  padding: 24px;
  padding: var(--space-md);
  border-left: 4px solid #39FF14;
  border-left: 4px solid var(--color-electric-green);
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
  text-decoration: none;
  color: inherit;
  display: block;
}

@supports (display: grid) {
  .tool-card {
    margin: 0;
  }
}

.tool-card:hover {
  border-left-color: #1A5F5F;
  border-left-color: var(--color-deep-teal);
  background: #FFFFFF;
  background: var(--color-white);
}

.tool-icon {
  font-size: 48px;
  margin-bottom: 16px;
  margin-bottom: var(--space-sm);
  text-align: center;
}

.tool-name {
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 18px;
  text-align: center;
  margin: 0;
}

/* ===================================
   11. DEBUG SECTION
   =================================== */
.debug-section {
  background: #F5F5F5;
  background: var(--color-off-white);
  padding: 24px;
  padding: var(--space-md);
  margin-top: 48px;
  margin-top: var(--space-xl);
  border-top: 2px solid #E8E8E8;
  border-top: 2px solid var(--color-very-light-gray);
}

.debug-section summary {
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
  color: #5A5A5A;
  color: var(--color-dark-gray);
}

.debug-content {
  margin-top: 24px;
  margin-top: var(--space-md);
}

.debug-content h4 {
  font-size: 14px;
  margin: 24px 0 8px 0;
  margin: var(--space-md) 0 var(--space-xs) 0;
  color: #5A5A5A;
  color: var(--color-dark-gray);
}

.debug-content pre {
  background: #FFFFFF;
  background: var(--color-white);
  padding: 16px;
  padding: var(--space-sm);
  border: 1px solid #E8E8E8;
  border: 1px solid var(--color-very-light-gray);
  border-radius: 4px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  overflow-x: auto;
  color: #5A5A5A;
  color: var(--color-dark-gray);
}

/* ===================================
   12. LANGUAGE SWITCHER
   =================================== */
.language-switcher {
  text-align: center;
  padding: 32px 0;
  padding: var(--space-lg) 0;
  /* OPTION B: Language switcher with gradient fade - Street Portrait */
  background:
    linear-gradient(to bottom,
      rgba(255, 255, 255, 0.35) 0%,
      rgba(255, 255, 255, 0.35) 60%,
      rgba(245, 245, 245, 0.7) 85%,
      #F5F5F5 100%
    ),
    url('../images/gc-images/GC-3000_Street_portrait_of_defiant_16-year-old_girl_leaning_aga_688883a4-cbe5-4de6-8ecf-43b60510fb14.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

.language-switcher a {
  display: inline-block;
  padding: 16px 24px;
  padding: var(--space-sm) var(--space-md);
  margin: 0 8px;
  margin: 0 var(--space-xs);
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  text-transform: uppercase;
  border: 2px solid #1C1C1C;
  border: 2px solid var(--color-near-black);
  border-radius: 4px;
  border-radius: var(--radius-sm);
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
}

.language-switcher a:hover {
  background: #1C1C1C;
  background: var(--color-near-black);
  color: #FFFFFF;
  color: var(--color-white);
}

/* ===================================
   13. LOGIN MESSAGE (alerts)
   =================================== */
.login-message {
  padding: 16px;
  padding: var(--space-sm);
  text-align: center;
  margin: 24px 20px;
  margin: var(--space-md) 20px;
  border-radius: 4px;
  border-radius: var(--radius-sm);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-family: var(--font-body);
}

.login-message.success {
  background: #2DD10D;
  background: var(--color-muted-green);
  color: #FFFFFF;
  color: var(--color-white);
}

.login-message.error {
  background: #CC5500;
  background: var(--color-burnt-orange);
  color: #FFFFFF;
  color: var(--color-white);
}

/* ===================================
   14. RESPONSIVE - TABLET (768px+)
   =================================== */
@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }

  .content-section {
    padding: 64px 40px;
    padding: var(--space-2xl) 40px;
  }

  h1 {
    font-size: 90px;
  }

  h2 {
    font-size: 54px;
  }

  /* Flexbox fallback: 2 columns */
  .games-grid .game-card,
  .tools-grid .tool-card {
    -webkit-flex: 1 1 calc(50% - 16px);
    flex: 1 1 calc(50% - 16px);
  }

  /* Grid: 2 columns */
  @supports (display: grid) {
    .games-grid,
    .tools-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      gap: var(--space-md);
    }
  }
}

/* ===================================
   15. RESPONSIVE - DESKTOP (1024px+)
   =================================== */
@media (min-width: 1024px) {
  .container {
    padding: 0 80px;
  }

  .content-section {
    padding: 80px;
    padding: var(--space-3xl) 80px;
  }

  h1 {
    font-size: 120px;
  }

  h2 {
    font-size: 72px;
  }

  h3 {
    font-size: 48px;
  }

  .hero-description {
    font-size: 20px;
  }

  .section-description {
    font-size: 20px;
  }

  /* Flexbox fallback: 3 columns for games, 4 for tools */
  .games-grid .game-card {
    -webkit-flex: 1 1 calc(33.333% - 16px);
    flex: 1 1 calc(33.333% - 16px);
  }

  .tools-grid .tool-card {
    -webkit-flex: 1 1 calc(25% - 16px);
    flex: 1 1 calc(25% - 16px);
  }

  /* Grid: 3 columns for games, 4 for tools */
  @supports (display: grid) {
    .games-grid {
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      gap: var(--space-lg);
    }

    .tools-grid {
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      gap: var(--space-lg);
    }
  }

  .btn-primary,
  .btn-secondary {
    font-size: 18px;
  }
}

/* ===================================
   16. ACCESSIBILITY
   =================================== */
/* Focus styles - with fallback */
:focus {
  outline: 2px solid #39FF14;
  outline: 2px solid var(--color-electric-green);
  outline-offset: 2px;
}

/* Modern browsers: :focus-visible for keyboard-only focus */
@supports selector(:focus-visible) {
  :focus:not(:focus-visible) {
    outline: none;
  }

  :focus-visible {
    outline: 2px solid #39FF14;
    outline: 2px solid var(--color-electric-green);
    outline-offset: 2px;
  }
}

/* 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;
  }

  body {
    background-attachment: scroll;
  }
}

/* ===================================
   17. MERCH SECTION
   =================================== */
.section-merch {
  background-color: #1C1C1C;
  color: #FFFFFF;
}

.section-merch .section-title,
.section-merch .section-description {
  color: #FFFFFF;
}

.section-merch .section-description {
  color: #D0D0D0;
  color: var(--color-light-gray);
}

.merch-preview-grid {
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  margin-top: 32px;
  margin-top: var(--space-lg);
}

.merch-card {
  background: #2a2a2a;
  border: 1px solid #333;
  overflow: hidden;
  max-width: 400px;
  width: 100%;
  text-decoration: none;
  color: #FFFFFF;
  transition: all 0.3s cubic-bezier(0.0, 0.0, 0.2, 1);
  transition: all var(--transition-normal);
  border-radius: 4px;
  border-radius: var(--radius-sm);
}

.merch-card:hover {
  box-shadow: 0 8px 24px rgba(57, 255, 20, 0.15);
  border-color: #39FF14;
  border-color: var(--color-electric-green);
  color: #FFFFFF;
}

.merch-card-content {
  padding: 24px;
  padding: var(--space-md);
  text-align: center;
}

.merch-card-title {
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 24px;
  color: #FFFFFF;
  margin-bottom: 8px;
  margin-bottom: var(--space-xs);
}

.merch-card p {
  color: #D0D0D0;
  color: var(--color-light-gray);
  font-size: 14px;
  margin: 0;
}

/* ===================================
   18. BROWSER COMPATIBILITY NOTES
   =================================== */
/*
  Progressive Enhancement Strategy:

  ✓ Fallback values provided before CSS variables (works in IE11+)
  ✓ Flexbox used as Grid fallback (works in IE11+ with vendor prefixes)
  ✓ Padding hack for aspect-ratio fallback (works in all browsers)
  ✓ Transform effects wrapped in @supports (gracefully skipped in old browsers)
  ✓ -webkit- prefixes for backdrop-filter (Safari 9+)
  ✓ Fixed backgrounds only on desktop, scroll on mobile (iOS Safari compatible)

  Supports:
  - IE11+ (2013+)
  - Chrome 60+ (2017+)
  - Safari 10+ (2016+)
  - Firefox 60+ (2018+)
  - iOS Safari 10+ (2016+)
  - Android Browser 5+ (2015+)
*/