/* ============================================
   VOYAGE — Site Web
   Design System Global
   ============================================ */

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

/* ===== Variables ===== */
:root {
  /* Primary */
  --primary: #4FC3F7;
  --primary-dark: #0288D1;
  --primary-light: #B3E5FC;
  
  /* Secondary */
  --secondary: #26A69A;
  --secondary-dark: #00897B;
  --secondary-light: #80CBC4;
  
  /* Accent */
  --accent: #FF7043;
  --accent-dark: #E64A19;
  --accent-light: #FFAB91;
  
  /* Surfaces */
  --bg: #FAFAFA;
  --bg-elevated: #FFFFFF;
  --bg-dark: #1A1A2E;
  --bg-dark-elevated: #252542;
  
  /* Text */
  --text: #212121;
  --text-secondary: #757575;
  --text-on-primary: #FFFFFF;
  --text-on-dark: #E0E0E0;
  --text-muted: #B0B0B0;
  
  /* Weather colors */
  --weather-sun: #FFD54F;
  --weather-rain: #2196F3;
  --weather-snow: #B3E5FC;
  --weather-wind: #00BCD4;
  --weather-storm: #7C4DFF;
  
  /* Route conditions */
  --route-good: #4CAF50;
  --route-caution: #FF9800;
  --route-danger: #F44336;
  --route-snow: #42A5F5;
  
  /* Spacing */
  --xs: 4px;
  --sm: 8px;
  --md: 12px;
  --lg: 16px;
  --xl: 24px;
  --xxl: 32px;
  --xxxl: 48px;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* 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 32px rgba(0,0,0,0.16);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.20);
  
  /* Blur */
  --blur-sm: 5px;
  --blur-md: 10px;
  --blur-lg: 20px;
  
  /* Transitions */
  --transition-fast: 200ms cubic-bezier(0.645, 0.045, 0.355, 1);
  --transition-normal: 350ms cubic-bezier(0.645, 0.045, 0.355, 1);
  --transition-slow: 500ms cubic-bezier(0.645, 0.045, 0.355, 1);
  
  /* Layout */
  --max-width: 1280px;
  --nav-height: 64px;
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

[data-theme="dark"] {
  --bg: #0F0F1E;
  --bg-elevated: #1A1A2E;
  --bg-dark-elevated: #252542;
  --text: #E0E0E0;
  --text-secondary: #A0A0B0;
  --text-muted: #606070;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.6);
}

/* ===== Base ===== */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--transition-normal), color var(--transition-normal);
}

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

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

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.display {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -1px;
}

.headline {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
}

.title {
  font-size: 1.25rem;
  font-weight: 600;
}

.subtitle {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--text-secondary);
}

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

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

.section {
  padding: var(--xxxl) 0;
}

.section-sm {
  padding: var(--xxl) 0;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: all var(--transition-normal);
  background: transparent;
}

.navbar.scrolled {
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(var(--blur-md));
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(26, 26, 46, 0.85);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--sm);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
}

.navbar-brand svg {
  width: 32px;
  height: 32px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--xl);
}

.navbar-links a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.navbar-links a:hover {
  color: var(--primary);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--md);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sm);
  padding: var(--md) var(--xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 16px rgba(79, 195, 247, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(79, 195, 247, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--text-muted);
}

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

.btn-ghost {
  color: var(--text);
  padding: var(--md) var(--lg);
}

.btn-ghost:hover {
  background: rgba(79, 195, 247, 0.1);
  color: var(--primary);
}

.btn-lg {
  padding: var(--lg) var(--xxl);
  font-size: 1.05rem;
}

.btn-sm {
  padding: var(--xs) var(--md);
  font-size: 0.85rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
}

/* ===== Glass Card ===== */
.glass-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(var(--blur-md));
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .glass-card {
  background: rgba(26, 26, 46, 0.75);
  border-color: rgba(255, 255, 255, 0.1);
}

/* ===== Grid ===== */
.grid {
  display: grid;
  gap: var(--xl);
}

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

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px var(--md);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-primary { background: rgba(79, 195, 247, 0.15); color: var(--primary-dark); }
.badge-secondary { background: rgba(38, 166, 154, 0.15); color: var(--secondary-dark); }
.badge-accent { background: rgba(255, 112, 67, 0.15); color: var(--accent-dark); }
.badge-good { background: rgba(76, 175, 80, 0.15); color: var(--route-good); }
.badge-caution { background: rgba(255, 152, 0, 0.15); color: var(--route-caution); }
.badge-danger { background: rgba(244, 67, 54, 0.15); color: var(--route-danger); }

/* ===== Stat Counter ===== */
.stat-counter {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-elevated);
  padding: var(--xxxl) 0 var(--xl);
  margin-top: var(--xxxl);
}

[data-theme="dark"] .footer {
  background: rgba(26, 26, 46, 0.5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--xxl);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--md);
  max-width: 320px;
}

.footer-links h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--md);
}

.footer-links a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: var(--xs) 0;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  margin-top: var(--xxl);
  padding-top: var(--lg);
  border-top: 1px solid rgba(0,0,0,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

[data-theme="dark"] .footer-bottom {
  border-color: rgba(255,255,255,0.08);
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: rgba(79, 195, 247, 0.1);
  color: var(--primary);
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

/* ===== Utility ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--sm); }
.mt-md { margin-top: var(--md); }
.mt-lg { margin-top: var(--lg); }
.mt-xl { margin-top: var(--xl); }
.mt-xxl { margin-top: var(--xxl); }
.mt-xxxl { margin-top: var(--xxxl); }
.mb-sm { margin-bottom: var(--sm); }
.mb-md { margin-bottom: var(--md); }
.mb-lg { margin-bottom: var(--lg); }
.mb-xl { margin-bottom: var(--xl); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--sm); }
.gap-md { gap: var(--md); }
.gap-lg { gap: var(--lg); }
.gap-xl { gap: var(--xl); }
.w-full { width: 100%; }
.hidden { display: none; }
.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }

/* ===== Language selector ===== */
.lang-selector { position: relative; }
.lang-current {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-elevated);
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 10px;
    cursor: pointer;
    color: var(--text);
    font-size: 0.875rem;
    width: 100%;
}
[data-theme="dark"] .lang-current { border-color: rgba(255,255,255,0.1); }
.lang-current:hover { border-color: var(--primary); }
.lang-flag { font-size: 1.2rem; }
.lang-name { flex: 1; text-align: left; }
.lang-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--bg-elevated);
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    overflow: hidden;
    z-index: 100;
}
[data-theme="dark"] .lang-dropdown { border-color: rgba(255,255,255,0.1); }
.lang-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background 0.1s;
}
.lang-option:hover { background: rgba(79,195,247,0.1); }
.lang-option.active { background: rgba(79,195,247,0.05); }
.lang-check { color: var(--primary); font-weight: 700; }

/* Navbar language selector (compact) */
.navbar-lang {
    display: flex;
    align-items: center;
}
.navbar-lang .lang-current {
    padding: 6px 10px;
    font-size: 0.8rem;
    background: transparent;
    border: 1px solid rgba(0,0,0,0.08);
}
[data-theme="dark"] .navbar-lang .lang-current { border-color: rgba(255,255,255,0.08); }
.navbar-lang .lang-name { display: none; } /* Flag only in navbar on desktop */
@media (min-width: 768px) {
    .navbar-lang .lang-name { display: inline; }
}
.navbar-lang .lang-dropdown {
    right: 0;
    left: auto;
    min-width: 160px;
}