/* ========================================
   Weather Pro - Modern Weather App Styles
   A portfolio-quality weather application
   ======================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Color Palette */
  --color-primary: #667eea;
  --color-primary-dark: #5a67d8;
  --color-secondary: #764ba2;
  --color-accent: #f093fb;
  
  /* Weather Theme Colors */
  --weather-clear-start: #4facfe;
  --weather-clear-end: #00f2fe;
  --weather-cloudy-start: #667db6;
  --weather-cloudy-end: #a8c0ff;
  --weather-rain-start: #616161;
  --weather-rain-end: #9bc5c3;
  --weather-snow-start: #e6dada;
  --weather-snow-end: #274046;
  --weather-thunder-start: #373b44;
  --weather-thunder-end: #4286f4;
  --weather-night-start: #0f0c29;
  --weather-night-end: #302b63;
  
  /* Glass Effects */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  --glass-blur: blur(16px);
  
  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 100;
  --z-overlay: 200;
  --z-modal: 300;
}

/* Dark Mode Variables */
.dark-mode {
  --glass-bg: rgba(0, 0, 0, 0.3);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: #ffffff;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-slow);
}

/* Weather Background Themes */
.weather-clear {
  background: linear-gradient(135deg, var(--weather-clear-start), var(--weather-clear-end));
}

.weather-cloudy {
  background: linear-gradient(135deg, var(--weather-cloudy-start), var(--weather-cloudy-end));
}

.weather-rain {
  background: linear-gradient(135deg, var(--weather-rain-start), var(--weather-rain-end));
}

.weather-snow {
  background: linear-gradient(135deg, var(--weather-snow-start), var(--weather-snow-end));
}

.weather-thunder {
  background: linear-gradient(135deg, var(--weather-thunder-start), var(--weather-thunder-end));
}

.weather-night {
  background: linear-gradient(135deg, var(--weather-night-start), var(--weather-night-end));
}

.weather-bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* ========================================
   Glass Morphism Component
   ======================================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
}

/* ========================================
   Layout
   ======================================== */
.app-container {
  position: relative;
  z-index: var(--z-base);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-md);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================================
   Header Styles
   ======================================== */
.app-header {
  padding: var(--spacing-lg) 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.brand-icon {
  font-size: 2rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

.control-btn:active {
  transform: scale(0.95);
}

.unit-toggle {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: 0.875rem;
}

/* ========================================
   Search Section
   ======================================== */
.search-wrapper {
  position: relative;
}

.search-container {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-normal);
}

.search-container:focus-within {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.search-icon {
  font-size: 1.25rem;
  opacity: 0.7;
  margin-right: var(--spacing-sm);
}

#cityInput {
  flex: 1;
  border: none;
  background: transparent;
  color: white;
  font-family: var(--font-secondary);
  font-size: 1rem;
  padding: var(--spacing-sm);
  outline: none;
}

#cityInput::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-full);
  background: white;
  color: var(--color-primary);
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.search-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: scale(1.05);
}

.search-btn:active {
  transform: scale(0.95);
}

.search-hint {
  display: block;
  font-size: 0.75rem;
  opacity: 0.6;
  margin-top: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

/* ========================================
   Suggestions Dropdown
   ======================================== */
.suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-sm);
  max-height: 200px;
  overflow-y: auto;
  z-index: var(--z-dropdown);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.suggestions li {
  padding: var(--spacing-md);
  color: #333;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.suggestions li::before {
  content: '📍';
}

.suggestions li:last-child {
  border-bottom: none;
}

.suggestions li:hover {
  background: rgba(102, 126, 234, 0.1);
}

/* ========================================
   Loading State
   ======================================== */
.loading-state {
  padding: var(--spacing-xl);
  animation: fadeIn 0.3s ease;
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.skeleton-location {
  width: 60%;
  height: 24px;
}

.skeleton-temp {
  width: 150px;
  height: 80px;
}

.skeleton-desc {
  width: 40%;
  height: 20px;
}

.skeleton-cards {
  display: flex;
  gap: var(--spacing-md);
}

.skeleton-card {
  flex: 1;
  height: 100px;
}

/* ========================================
   Error State
   ======================================== */
.error-state {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-2xl);
  animation: fadeIn 0.3s ease;
}

.error-card {
  text-align: center;
  padding: var(--spacing-2xl);
  max-width: 400px;
}

.error-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: var(--spacing-lg);
}

.error-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.error-card p {
  opacity: 0.8;
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: white;
  color: var(--color-primary);
}

.btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary:active {
  transform: translateY(0);
}

/* ========================================
   Main Weather Content
   ======================================== */
.weather-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Hero Section - Current Weather
   ======================================== */
.hero-section {
  padding: var(--spacing-xl);
  text-align: center;
}

.hero-location {
  margin-bottom: var(--spacing-lg);
}

.city-name {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.date-time {
  font-size: 0.875rem;
  opacity: 0.8;
}

.hero-main {
  margin-bottom: var(--spacing-xl);
}

.hero-temp-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.weather-icon-wrapper {
  position: relative;
}

.weather-icon-main {
  width: 120px;
  height: 120px;
  filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.2));
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.temp-info {
  display: flex;
  flex-direction: column;
}

.temp-value {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(180deg, #fff, rgba(255, 255, 255, 0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feels-like {
  font-size: 0.875rem;
  opacity: 0.7;
  margin-top: var(--spacing-xs);
}

.weather-description {
  font-size: 1.25rem;
  text-transform: capitalize;
  opacity: 0.9;
}

/* Weather Details Grid */
.weather-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

@media (min-width: 600px) {
  .weather-details {
    grid-template-columns: repeat(4, 1fr);
  }
}

.detail-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.detail-item:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.detail-icon {
  font-size: 1.5rem;
}

.detail-info {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.75rem;
  opacity: 0.7;
}

.detail-value {
  font-size: 1rem;
  font-weight: 600;
}

/* ========================================
   Sun Times Section
   ======================================== */
.sun-times-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}

.sun-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.sun-icon {
  font-size: 1.5rem;
}

.sun-info {
  display: flex;
  flex-direction: column;
}

.sun-label {
  font-size: 0.75rem;
  opacity: 0.7;
}

.sun-time {
  font-size: 1rem;
  font-weight: 600;
}

.sun-progress {
  flex: 1;
  padding: 0 var(--spacing-md);
}

.sun-track {
  position: relative;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
}

.sun-indicator {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.25rem;
  transition: left var(--transition-normal);
}

/* ========================================
   Section Title
   ======================================== */
.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.section-icon {
  font-size: 1.25rem;
}

/* ========================================
   Hourly Forecast Section
   ======================================== */
.hourly-section {
  padding: var(--spacing-lg);
}

.hourly-scroll {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.hourly-scroll::-webkit-scrollbar {
  height: 6px;
}

.hourly-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.hourly-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
}

.hourly-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  min-width: 80px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.hourly-item:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.hourly-item.active {
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.hourly-time {
  font-size: 0.75rem;
  opacity: 0.8;
}

.hourly-icon {
  width: 40px;
  height: 40px;
}

.hourly-temp {
  font-size: 1rem;
  font-weight: 600;
}

/* ========================================
   5-Day Forecast Section
   ======================================== */
.forecast-section {
  padding: var(--spacing-lg);
}

.forecast-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.forecast-card {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr 1fr;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.forecast-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(5px);
}

.forecast-day {
  font-weight: 600;
}

.forecast-date {
  font-size: 0.75rem;
  opacity: 0.7;
  display: block;
}

.forecast-icon-wrapper {
  display: flex;
  justify-content: center;
}

.forecast-icon {
  width: 50px;
  height: 50px;
}

.forecast-description {
  font-size: 0.875rem;
  text-transform: capitalize;
  opacity: 0.8;
}

.forecast-temps {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

.forecast-high {
  font-weight: 600;
}

.forecast-low {
  opacity: 0.6;
}

/* ========================================
   Footer
   ======================================== */
.app-footer {
  text-align: center;
  padding: var(--spacing-lg);
  font-size: 0.875rem;
  opacity: 0.7;
}

.app-footer a {
  color: white;
  text-decoration: underline;
  transition: opacity var(--transition-fast);
}

.app-footer a:hover {
  opacity: 1;
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .brand-title {
    font-size: 1.25rem;
  }
  
  .temp-value {
    font-size: 3rem;
  }
  
  .weather-icon-main {
    width: 80px;
    height: 80px;
  }
  
  .sun-times-section {
    flex-direction: column;
  }
  
  .sun-progress {
    width: 100%;
    order: 3;
  }
  
  .forecast-card {
    grid-template-columns: 1.5fr 1fr 2fr 1fr;
    font-size: 0.875rem;
  }
}

@media (min-width: 768px) {
  .app-container {
    padding: var(--spacing-xl);
  }
  
  .temp-value {
    font-size: 5rem;
  }
  
  .weather-icon-main {
    width: 150px;
    height: 150px;
  }
}

/* ========================================
   Dark Mode Styles
   ======================================== */
.dark-mode {
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
}

.dark-mode .suggestions {
  background: rgba(30, 30, 30, 0.95);
}

.dark-mode .suggestions li {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.dark-mode .suggestions li:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .glass {
    background: white;
    border: 1px solid #ddd;
    backdrop-filter: none;
  }
  
  .hidden {
    display: none !important;
  }
}