/* ============================================
   RESPONSIVE STYLES & THEME IMPROVEMENTS
   Mobile-first approach with comprehensive breakpoints
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (THEME VARIABLES)
   ============================================ */

:root {
  /* Brand Colors */
  --primary: #FA8F31;
  --primary-dark: #F16D26;
  --accent: #AA1811;
  --accent-dark: #7C1715;
  --near-black: #0B0605;
  
  /* Background Colors */
  --bg-primary: #000000;
  --bg-secondary: #0B0605;
  --glass-bg: rgba(11, 6, 5, 0.4);
  --glass-border: rgba(250, 143, 49, 0.2);
  
  /* Text Colors */
  --text-primary: #f0f0f0;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.6);
  
  /* Overlay & Banner */
  --banner-overlay: rgba(250, 143, 49, 0.15);
  --quote-banner: rgba(250, 143, 49, 0.08);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(250, 143, 49, 0.15);
  --shadow-md: 0 4px 16px rgba(250, 143, 49, 0.25);
  --shadow-lg: 0 8px 32px rgba(250, 143, 49, 0.35);
  --shadow-glow: 0 0 30px rgba(250, 143, 49, 0.4);
  
  /* Spacing (fluid typography) */
  --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
  --space-sm: clamp(0.5rem, 1vw, 1rem);
  --space-md: clamp(1rem, 2vw, 2rem);
  --space-lg: clamp(2rem, 4vw, 4rem);
  --space-xl: clamp(3rem, 6vw, 6rem);
  
  /* Typography */
  --font-size-xs: clamp(0.75rem, 0.8vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.9vw, 1rem);
  --font-size-base: clamp(1rem, 1.1vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1.3vw, 1.5rem);
  --font-size-xl: clamp(1.5rem, 2vw, 2rem);
  --font-size-2xl: clamp(2rem, 3vw, 3rem);
  --font-size-3xl: clamp(2.5rem, 4vw, 4rem);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-indexes */
  --z-background: 0;
  --z-content: 1;
  --z-hero: 2;
  --z-nav: 100;
  --z-overlay: 500;
  --z-modal: 1000;
  
  /* Breakpoints (for JS access) */
  --breakpoint-mobile: 768px;
  --breakpoint-tablet: 1024px;
  --breakpoint-desktop: 1440px;
}

/* ============================================
   LIGHT MODE THEME (WCAG AA COMPLIANT)
   ============================================ */

[data-theme="light"] {
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(250, 143, 49, 0.3);
  
  /* Text Colors (WCAG AA: 4.5:1 contrast ratio) */
  --text-primary: #1a1a1a;
  --text-secondary: #333333;
  --text-muted: #666666;
  
  /* Adjusted overlays for light mode */
  --banner-overlay: rgba(250, 143, 49, 0.2);
  --quote-banner: rgba(250, 143, 49, 0.12);
  
  /* Shadows for light mode */
  --shadow-sm: 0 2px 8px rgba(170, 24, 17, 0.1);
  --shadow-md: 0 4px 16px rgba(170, 24, 17, 0.15);
  --shadow-lg: 0 8px 32px rgba(170, 24, 17, 0.2);
  --shadow-glow: 0 0 20px rgba(250, 143, 49, 0.3);
}

/* ============================================
   BASE RESPONSIVE STYLES
   ============================================ */

/* Mobile-first base styles */
body {
  font-size: var(--font-size-base);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background var(--transition-base), color var(--transition-base);
}

/* Container widths */
.container {
  width: 100%;
  max-width: 100%;
  padding: 0 var(--space-md);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
  }
}

/* Extra wide screens */
@media (min-width: 1920px) {
  .container {
    max-width: 1600px;
  }
}

@media (min-width: 2560px) {
  .container {
    max-width: 2000px;
  }
}

/* ============================================
   TYPOGRAPHY RESPONSIVE SCALING
   ============================================ */

h1 {
  font-size: var(--font-size-3xl);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: var(--font-size-2xl);
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--font-size-xl);
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

h4 {
  font-size: var(--font-size-lg);
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

p {
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

/* ============================================
   NAVBAR RESPONSIVE
   ============================================ */

.pill-menu {
  position: fixed;
  top: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-nav);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 6px 8px;
  display: flex;
  gap: 4px;
  box-shadow: var(--shadow-md);
  flex-wrap: nowrap;
  overflow-x: auto;
  max-width: calc(100vw - var(--space-md));
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.pill-menu::-webkit-scrollbar {
  display: none;
}

.pill-menu a {
  padding: 8px 16px;
  border-radius: 50px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--font-size-xs);
  transition: all var(--transition-base);
  white-space: nowrap;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .pill-menu {
    padding: 8px 12px;
    gap: 8px;
  }
  
  .pill-menu a {
    padding: 10px 24px;
    font-size: var(--font-size-sm);
  }
}

@media (min-width: 1024px) {
  .pill-menu {
    top: var(--space-md);
  }
}

/* Language Switcher */
.lang-switcher {
  margin-left: var(--space-xs);
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--primary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-xs);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .lang-switcher {
    padding: 10px 16px;
    font-size: var(--font-size-sm);
  }
}

/* ============================================
   HERO SECTION RESPONSIVE
   ============================================ */

.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(60px + var(--space-md)) var(--space-md) var(--space-md);
  position: relative;
}

.hero-content {
  max-width: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: center;
  position: relative;
  z-index: var(--z-hero);
}

/* Mobile: Stack layout */
.hero-text {
  text-align: center;
  max-width: 100%;
}

.hero-text h1 {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.hero-text p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* 3D Car Container */
.car-container {
  position: relative;
  width: 100%;
  height: 300px;
  max-width: 500px;
}

/* Tablet: Increase car size */
@media (min-width: 768px) {
  .car-container {
    height: 400px;
    max-width: 600px;
  }
}

/* Desktop: Side-by-side layout */
@media (min-width: 1024px) {
  .hero-content {
    max-width: 1400px;
    display: grid;
    grid-template-columns: 1fr 700px 1fr;
    gap: var(--space-lg);
    align-items: center;
  }
  
  .hero-text {
    text-align: right;
    padding-right: var(--space-md);
  }
  
  .car-container {
    width: 700px;
    height: 700px;
    max-width: none;
  }
  
  .hero-info {
    text-align: left;
    padding-left: var(--space-md);
  }
}

/* ============================================
   3D CAR & PARTICLES CANVAS
   ============================================ */

#threejs-car {
  width: 100%;
  height: 100%;
  border-radius: 20px;
  position: relative;
  z-index: var(--z-background);
}

#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: var(--z-background);
  pointer-events: none;
  background: transparent;
}

/* ============================================
   HOTSPOT SYSTEM (Desktop only)
   ============================================ */

.car-hotspot {
  position: absolute;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 2px solid var(--primary);
  border-radius: 12px;
  padding: 12px 16px;
  max-width: 250px;
  font-size: var(--font-size-sm);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-lg);
  transform: translate(-50%, -100%);
  margin-top: -20px;
}

.car-hotspot.visible {
  opacity: 1;
}

.car-hotspot h4 {
  color: var(--primary);
  margin-bottom: var(--space-xs);
  font-size: var(--font-size-base);
  font-weight: 700;
}

.car-hotspot p {
  margin: 0;
  color: var(--text-secondary);
}

.hotspot-arrow {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 20px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}

.hotspot-arrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid var(--primary);
}

/* Hide hotspots on mobile */
@media (max-width: 768px) {
  .car-hotspot {
    display: none !important;
  }
}

/* ============================================
   HUD INDICATORS (RESPONSIVE POSITIONING)
   ============================================ */

.rotate-indicator {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 10px 20px;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0;
  animation: fadeInPulse 2s ease-in-out 2s forwards;
  z-index: var(--z-hero);
}

.rotate-indicator .material-icons {
  font-size: 18px;
}

.scroll-indicator {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 12px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  animation: fadeInPulse 2s ease-in-out 3s forwards, bounce 2s ease-in-out 5s infinite;
  z-index: var(--z-hero);
}

@keyframes fadeInPulse {
  to { opacity: 1; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* Hide rotate indicator on mobile */
@media (max-width: 768px) {
  .rotate-indicator {
    display: none;
  }
}

@media (min-width: 1024px) {
  .rotate-indicator {
    bottom: var(--space-lg);
    left: var(--space-lg);
    padding: 12px 24px;
    font-size: var(--font-size-sm);
  }
  
  .scroll-indicator {
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 60px;
    height: 60px;
  }
}

/* ============================================
   QUOTE BANNER (Semi-transparent orange strip)
   ============================================ */

.quote-section {
  position: relative;
  padding: var(--space-xl) var(--space-md);
  margin: var(--space-xl) 0;
}

.quote-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--quote-banner);
  border-left: 3px solid var(--primary);
  z-index: -1;
  opacity: 1;
}

.quote-section blockquote {
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--text-primary);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.quote-section cite {
  display: block;
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--primary);
  font-style: normal;
  font-weight: 600;
}

/* ============================================
   INFO CARDS (Matte background for readability)
   ============================================ */

.info-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
}

.info-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.info-card h3 {
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.info-card p {
  color: var(--text-secondary);
  margin: 0;
}

@media (min-width: 768px) {
  .info-card {
    padding: var(--space-lg);
  }
}

/* ============================================
   COMPETENCE BADGES (Level-based styling)
   ============================================ */

.competence-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-base);
}

/* T11 / Top Level: Squared corners */
.competence-badge.level-top {
  border-radius: 4px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
}

/* Advanced: Slightly rounded */
.competence-badge.level-advanced {
  border-radius: 12px;
  border-color: var(--primary);
}

/* Intermediate: More rounded */
.competence-badge.level-intermediate {
  border-radius: 20px;
  border-color: var(--accent);
}

/* Beginner: Fully rounded (pill) */
.competence-badge.level-beginner {
  border-radius: 50px;
  border-color: var(--glass-border);
}

.competence-badge .badge-icon {
  font-size: 16px;
}

/* ============================================
   BUTTONS (Rounded pill style)
   ============================================ */

.cta-button, .btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  border: none;
  cursor: pointer;
}

.cta-button:hover, .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--primary);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: var(--font-size-base);
  border: 2px solid var(--primary);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

@media (min-width: 768px) {
  .cta-button, .btn-primary, .btn-secondary {
    padding: 16px 40px;
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   ANIMATED NUMBER COUNTERS (Preserved)
   ============================================ */

.stats-counter {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.stat-item {
  text-align: center;
  padding: var(--space-md);
  background: var(--glass-bg);
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.stat-item:hover {
  transform: scale(1.05);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary);
  display: block;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   ROADMAP (Interactive highlight on hover)
   ============================================ */

.roadmap-container {
  margin: var(--space-xl) 0;
}

.roadmap-item {
  position: relative;
  padding: var(--space-md);
  padding-left: calc(var(--space-md) + 20px);
  margin-bottom: var(--space-md);
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-base);
}

.roadmap-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  border-radius: 3px;
  transition: all var(--transition-base);
}

.roadmap-item:hover::before,
.roadmap-item.active::before {
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  box-shadow: 0 0 10px var(--primary);
}

.roadmap-item:hover {
  transform: translateX(8px);
  border-color: var(--primary);
  background: rgba(250, 143, 49, 0.05);
}

.roadmap-item.active {
  border-color: var(--primary);
  background: rgba(250, 143, 49, 0.08);
}

.roadmap-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.roadmap-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.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); }

.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); }

.hidden-mobile { display: none; }
.hidden-tablet { display: block; }
.hidden-desktop { display: block; }

@media (min-width: 768px) {
  .hidden-mobile { display: block; }
  .hidden-tablet { display: none; }
}

@media (min-width: 1024px) {
  .hidden-desktop { display: none; }
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

/* Focus styles for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: #fff;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 9999;
}

.skip-link:focus {
  top: 10px;
  left: 10px;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --glass-bg: rgba(11, 6, 5, 0.9);
    --glass-border: rgba(250, 143, 49, 0.8);
  }
  
  [data-theme="light"] {
    --glass-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #000000;
    --text-secondary: #1a1a1a;
  }
}