/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
  --primary: #4A90E2;
  --primary-dark: #3A7BC8;
  --secondary: #7FBA00;
  --danger: #E74C3C;
  --success: #2ECC71;
  --warning: #F39C12;
  
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text-dark: #2D3748;
  --text-light: #718096;
  --border: #E2E8F0;
  
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
  
  --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-main);
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

/* ===========================
   Container & Layout
   =========================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.main-content {
  min-height: calc(100vh - 200px);
  padding: 40px 0;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.navbar-brand a {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

.logo-icon { margin-right: 10px; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-menu a {
  color: var(--text-dark);
  font-weight: 500;
  transition: color var(--transition);
  padding: 8px 15px;
  border-radius: var(--radius-sm);
}

.nav-menu a:hover {
  color: var(--primary);
  background: var(--bg-light);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  transition: var(--transition);
}

/* ===========================
   Quick Search Bar
   =========================== */
.quick-search-bar {
  background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
  padding: 15px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.quick-search-form {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  gap: 10px;
}

.quick-search-form input {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  outline: none;
  background: white;
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.quick-search-form input:focus {
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transform: translateY(-1px);
}

.quick-search-form button {
  padding: 12px 30px;
  background: white;
  color: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.quick-search-form button:hover {
  background: var(--secondary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
  .quick-search-bar {
    padding: 12px 0;
  }
  
  .quick-search-form {
    max-width: 100%;
  }
  
  .quick-search-form input {
    font-size: 14px;
    padding: 10px 16px;
  }
  
  .quick-search-form button {
    padding: 10px 20px;
    font-size: 14px;
  }
}


/* ===========================
   Hero Section
   =========================== */
.hero-section {
  background: linear-gradient(135deg, var(--primary) 0%, #6BA3F5 100%);
  color: white;
  padding: 60px 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
  text-align: center;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 15px;
}

.hero-subtitle {
  font-size: 20px;
  opacity: 0.95;
  margin-bottom: 30px;
}

/* ===========================
   Search Box
   =========================== */
.search-box {
  max-width: 600px;
  margin: 30px auto;
}

.search-box form {
  display: flex;
  gap: 10px;
}

.search-box input {
  flex: 1;
  padding: 15px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  outline: none;
}

.search-box button {
  padding: 15px 30px;
  background: var(--secondary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.search-box button:hover {
  background: #6BA000;
  transform: translateY(-2px);
}

/* ===========================
   Stats Grid
   =========================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.stat-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 5px;
}

.stat-label {
  font-size: 14px;
  opacity: 0.9;
}

/* ===========================
   Sections
   =========================== */
.section {
  margin-bottom: 50px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 30px;
  text-align: center;
}

/* ===========================
   Weather Cards
   =========================== */
.weather-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.weather-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 25px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.weather-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.weather-city {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 15px;
}

.weather-icon {
  font-size: 64px;
  margin: 15px 0;
}

.weather-temp {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin: 10px 0;
}

.weather-desc {
  color: var(--text-light);
  font-size: 14px;
}

/* ===========================
   Cities Grid
   =========================== */
.cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 15px;
}

.city-item {
  background: var(--bg-white);
  padding: 15px;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.city-item:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.city-name {
  font-weight: 600;
}

.city-weather {
  display: flex;
  align-items: center;
  gap: 5px;
}

.city-emoji {
  font-size: 20px;
}

.city-temp {
  font-weight: 600;
  color: var(--primary);
}

/* ===========================
   Forecast Page
   =========================== */
.forecast-tabs {
  display: flex;
  gap: 10px;
  margin: 30px 0;
  overflow-x: auto;
  padding: 10px 0;
}

.tab-link {
  padding: 12px 24px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-link:hover {
  background: var(--bg-light);
}

.tab-link.active {
  background: var(--primary);
  color: white;
}

.forecast-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.forecast-card {
  background: var(--bg-white);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.forecast-date {
  font-weight: 600;
  margin-bottom: 10px;
}

.forecast-date small {
  display: block;
  color: var(--text-light);
  font-size: 12px;
}

.forecast-icon-large {
  font-size: 48px;
  margin: 15px 0;
}

.forecast-temps {
  display: flex;
  justify-content: center;
  gap: 15px;
  font-size: 20px;
  font-weight: 600;
  margin: 10px 0;
}

.temp-max { color: var(--danger); }
.temp-min { color: var(--text-light); }

.forecast-desc {
  color: var(--text-light);
  font-size: 14px;
  margin-top: 10px;
}

/* ===========================
   Hourly Forecast
   =========================== */
.hourly-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 15px;
}

.hourly-item {
  background: var(--bg-white);
  padding: 15px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.hourly-time {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 10px;
}

.hourly-icon {
  font-size: 36px;
  margin: 10px 0;
}

.hourly-temp {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
}

.hourly-desc {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 5px;
}

/* ===========================
   Footer
   =========================== */
.footer {
  background: var(--bg-white);
  padding: 50px 20px 20px;
  margin-top: 60px;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 30px;
}

.footer-col h4, .footer-col h5 {
  margin-bottom: 15px;
  color: var(--text-dark);
}

.footer-col p {
  color: var(--text-light);
  font-size: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-light);
  font-size: 14px;
  transition: color var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-light);
  font-size: 14px;
}

/* ===========================
   Breadcrumb
   =========================== */
.breadcrumb {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 0;
  margin: 0;
  font-size: 14px;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  padding: 12px 0;
  margin: 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  color: var(--text-light);
  font-size: 14px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  display: inline-block;
  padding: 0 10px;
  color: var(--text-light);
  font-size: 18px;
  font-weight: 300;
}

.breadcrumb-item a {
  color: var(--text-dark);
  transition: all var(--transition);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item a:hover {
  color: var(--primary);
  background: var(--bg-light);
}

.breadcrumb-item.active {
  color: var(--text-light);
  font-weight: 500;
}

/* Responsive breadcrumb */
@media (max-width: 768px) {
  .breadcrumb {
    font-size: 13px;
  }
  
  .breadcrumb-item {
    font-size: 13px;
  }
  
  .breadcrumb-item + .breadcrumb-item::before {
    padding: 0 6px;
    font-size: 16px;
  }
}

/* ===========================
   Error Pages
   =========================== */
.error-page {
  text-align: center;
  padding: 100px 20px;
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--primary);
}

.error-title {
  font-size: 32px;
  margin: 20px 0;
}

.error-message {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 30px;
}

.btn-home {
  display: inline-block;
  padding: 15px 30px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition);
}

.btn-home:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .weather-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero-title {
    font-size: 24px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .weather-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   Utilities
   =========================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--text-light); }
.text-primary { color: var(--primary); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

.no-data, .no-results {
  text-align: center;
  padding: 40px;
  color: var(--text-light);
  font-size: 18px;
}

.page-content {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.page-content h1 {
  margin-bottom: 20px;
  color: var(--primary);
}

.page-content h3 {
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-content p {
  line-height: 1.8;
  margin-bottom: 15px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 15px;
  margin-bottom: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
}

.contact-form button {
  padding: 12px 30px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.contact-form button:hover {
  background: var(--primary-dark);
}

.map-placeholder,
.radar-placeholder {
  background: var(--bg-white);
  padding: 100px 20px;
  text-align: center;
  border-radius: var(--radius-lg);
  margin: 30px 0;
  border: 2px dashed var(--border);
}