/* ============================================
   WEATHER BULLETIN SYSTEM - MAIN STYLES
   ============================================ */

/* CSS Variables */
:root {
  /* Light Theme Colors */
  --primary-color: #4a90d9;
  --secondary-color: #6b5ce7;
  --accent-color: #ffd700;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --error-color: #f44336;

  --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-secondary: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
  --bg-storm: linear-gradient(135deg, #2d3436 0%, #636e72 100%);
  --bg-sunset: linear-gradient(135deg, #ff7675 0%, #d63031 100%);

  --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, 0.1);

  --text-primary: #2d3436;
  --text-secondary: #636e72;
  --text-light: #b2bec3;
  --text-white: #ffffff;

  --sidebar-bg: rgba(255, 255, 255, 0.1);
  --sidebar-width: 280px;
  --sidebar-collapsed: 80px;

  --card-bg: rgba(255, 255, 255, 0.2);
  --card-hover: rgba(255, 255, 255, 0.3);

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-xl: 30px;
}

/* Dark Theme Colors */
[data-theme="dark"] {
  --bg-primary: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  --bg-secondary: linear-gradient(135deg, #0f3460 0%, #16213e 100%);
  --bg-storm: linear-gradient(135deg, #000000 0%, #1a1a2e 100%);
  --bg-sunset: linear-gradient(135deg, #2d132c 0%, #801336 100%);

  --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, 0.3);

  --text-primary: #ffffff;
  --text-secondary: #b2bec3;
  --text-light: #636e72;

  --sidebar-bg: rgba(0, 0, 0, 0.2);
  --card-bg: rgba(0, 0, 0, 0.3);
  --card-hover: rgba(0, 0, 0, 0.4);
}

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

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

body {
  font-family:
    "Poppins",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  transition:
    background var(--transition-normal),
    color var(--transition-normal);
}

/* ============================================
   BACKGROUND LAYERS
   ============================================ */

.bg-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  opacity: 0;
  transition: opacity 2s ease;
}

.bg-sky {
  background: var(--bg-secondary);
  opacity: 1;
}

.bg-storm {
  background: var(--bg-storm);
}

.bg-sunset {
  background: var(--bg-sunset);
}

/* Weather Canvas */
.weather-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Lightning Flash */
.lightning-flash {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.9);
  z-index: -1;
  opacity: 0;
  pointer-events: none;
}

/* Fog Layer */
.fog-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  z-index: -1;
  opacity: 0;
  pointer-events: none;
  animation: fogMove 20s ease-in-out infinite;
}

@keyframes fogMove {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.3;
  }
  50% {
    transform: translateY(-20px);
    opacity: 0.5;
  }
}

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--glass-border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition-normal),
    width var(--transition-normal);
  overflow-x: hidden;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%,
  100% {
    transform: scale(1);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.05);
    filter: brightness(1.2);
  }
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-white);
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.sidebar-nav {
  flex: 1;
  padding: 20px 0;
  overflow-y: auto;
}

.nav-list {
  list-style: none;
}

.nav-item {
  margin: 4px 12px;
}

.nav-divider {
  padding: 16px 20px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-light);
  opacity: 0.7;
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-radius: var(--border-radius-md);
  color: var(--text-white);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-link:hover::before,
.nav-item.active .nav-link::before {
  opacity: 1;
}

.nav-link:hover,
.nav-item.active .nav-link {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.nav-icon svg {
  width: 100%;
  height: 100%;
}

.nav-text {
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  white-space: nowrap;
}

/* Auto-Hide / Collapsed Sidebar State */
body.sidebar-collapsed .sidebar {
  width: var(--sidebar-collapsed);
}

body.sidebar-collapsed .main-content {
  margin-left: var(--sidebar-collapsed);
}

body.sidebar-collapsed .logo-text,
body.sidebar-collapsed .nav-text,
body.sidebar-collapsed .version,
body.sidebar-collapsed .nav-divider {
  opacity: 0;
}

body.sidebar-collapsed .sidebar:hover {
  width: var(--sidebar-width);
  box-shadow: var(--glass-shadow);
}

body.sidebar-collapsed .sidebar:hover .logo-text,
body.sidebar-collapsed .sidebar:hover .nav-text,
body.sidebar-collapsed .sidebar:hover .version {
  opacity: 1;
}

body.sidebar-collapsed .sidebar:hover .nav-divider {
  opacity: 0.7;
}

.version {
  font-size: 0.75rem;
  color: var(--text-light);
  opacity: 0.7;
}

/* Sidebar Overlay */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  width: 44px;
  height: 44px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: 24px;
  transition: margin-left var(--transition-normal);
}

/* Top Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding: 16px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--glass-shadow);
}

@media (max-width: 1024px) {
  #desktopMenuToggle {
    display: none !important;
  }
}

.page-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-white);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Language Toggle */
.language-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  padding: 6px 12px;
  border-radius: var(--border-radius-xl);
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.lang-btn.active,
.lang-btn:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.2);
}

.lang-divider {
  color: var(--text-light);
  opacity: 0.5;
}

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(15deg);
}

.theme-icon {
  position: absolute;
  transition: all var(--transition-normal);
}

.theme-icon.sun {
  opacity: 1;
  transform: rotate(0) scale(1);
}

.theme-icon.moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon.moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* ============================================
   GLASSMORPHISM CARDS
   ============================================ */

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.glass-card:hover .card-glow {
  opacity: 1;
}

/* ============================================
   DASHBOARD CONTENT
   ============================================ */

.dashboard-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main-card {
  padding: 48px 64px;
  text-align: center;
  max-width: 500px;
  width: 100%;
}

.weather-logo {
  margin-bottom: 24px;
}

.weather-logo .logo-img {
  width: 100px;
  height: 100px;
  animation: logoFloat 4s ease-in-out infinite;
}

@keyframes logoFloat {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-15px) rotate(5deg);
  }
}

.card-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.card-subtitle {
  font-size: 1rem;
  color: var(--text-light);
  opacity: 0.9;
}

.card-decoration {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.decoration-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.5),
    transparent
  );
}

.decoration-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-color);
  border-radius: 50%;
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.7;
  }
}

/* Section Title */
.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 20px;
}

/* Quick Actions Grid */
.actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.action-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 28px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.action-card:hover {
  background: var(--card-hover);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.action-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  transition: transform var(--transition-normal);
}

.action-card:hover .action-icon {
  transform: scale(1.1) rotate(5deg);
}

.action-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.action-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
}

.action-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Weather Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  background: var(--card-hover);
  transform: translateY(-4px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.stat-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

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

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ============================================
   REPORT PAGES
   ============================================ */

.report-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 900px;
  margin: 0 auto;
}

.report-header-card {
  padding: 40px;
  text-align: center;
}

.report-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
}

.report-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.report-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.report-description {
  font-size: 1rem;
  color: var(--text-light);
  max-width: 500px;
  margin: 0 auto;
}

/* Upload Section */
.upload-card {
  padding: 32px;
}

.upload-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 20px;
}

.upload-area {
  position: relative;
  border: 2px dashed var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 40px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--primary-color);
  background: rgba(74, 144, 217, 0.1);
}

.file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--text-white);
  opacity: 0.7;
}

.upload-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-white);
  margin-bottom: 4px;
}

.upload-subtext {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.upload-formats {
  font-size: 0.8rem;
  color: var(--text-light);
  opacity: 0.7;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
}

/* File List */
.file-list {
  margin-top: 24px;
  display: none;
}

.file-list.has-files {
  display: block;
}

.file-list-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 12px;
}

.file-list ul {
  list-style: none;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-sm);
  margin-bottom: 8px;
}

.file-name {
  font-size: 0.9rem;
  color: var(--text-white);
}

.file-remove {
  background: none;
  border: none;
  color: var(--error-color);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast);
}

.file-remove:hover {
  background: rgba(244, 67, 54, 0.1);
}

/* Options Section */
.options-card,
.data-source-card,
.duration-card,
.model-card,
.regions-card {
  padding: 28px;
}

.options-title,
.data-source-title,
.duration-title,
.model-title,
.regions-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 20px;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.option-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-item.full-width {
  grid-column: 1 / -1;
}

.option-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-light);
}

.option-input,
.option-select {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-white);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.option-input:focus,
.option-select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.15);
}

.option-select option {
  background: #2d3436;
  color: var(--text-white);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-label {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 26px;
  transition: background var(--transition-fast);
}

.toggle-label::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.toggle-switch input:checked + .toggle-label {
  background: var(--success-color);
}

.toggle-switch input:checked + .toggle-label::before {
  transform: translateX(24px);
}

/* Checkbox Group */
.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-white);
}

.checkbox-item input {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--glass-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.checkmark::after {
  content: "✓";
  font-size: 12px;
  color: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.checkbox-item input:checked + .checkmark {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.checkbox-item input:checked + .checkmark::after {
  opacity: 1;
}

/* Data Source Options */
.data-source-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.data-source-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.data-source-option:hover {
  background: rgba(255, 255, 255, 0.1);
}

.data-source-option input {
  display: none;
}

.option-radio {
  width: 20px;
  height: 20px;
  border: 2px solid var(--glass-border);
  border-radius: 50%;
  position: relative;
  transition: all var(--transition-fast);
}

.option-radio::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 10px;
  height: 10px;
  background: var(--primary-color);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.data-source-option input:checked + .option-radio {
  border-color: var(--primary-color);
}

.data-source-option input:checked + .option-radio::after {
  transform: translate(-50%, -50%) scale(1);
}

/* Duration Options */
.duration-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 16px;
}

.duration-option {
  cursor: pointer;
}

.duration-option input {
  display: none;
}

.duration-card-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
}

.duration-option:hover .duration-card-option {
  background: rgba(255, 255, 255, 0.1);
}

.duration-option input:checked + .duration-card-option {
  border-color: var(--primary-color);
  background: rgba(74, 144, 217, 0.15);
}

.duration-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-white);
}

.duration-unit {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* Model Options */
.model-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.model-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.model-option:hover {
  background: rgba(255, 255, 255, 0.1);
}

.model-option input {
  display: none;
}

.model-radio {
  width: 20px;
  height: 20px;
  border: 2px solid var(--glass-border);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  margin-top: 2px;
  transition: all var(--transition-fast);
}

.model-radio::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 10px;
  height: 10px;
  background: var(--primary-color);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.model-option input:checked + .model-radio {
  border-color: var(--primary-color);
}

.model-option input:checked + .model-radio::after {
  transform: translate(-50%, -50%) scale(1);
}

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

.model-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
}

.model-desc {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Regions Grid */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.region-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  color: var(--text-white);
}

.region-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

.region-item input {
  display: none;
}

.region-check {
  width: 18px;
  height: 18px;
  border: 2px solid var(--glass-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.region-check::after {
  content: "✓";
  font-size: 11px;
  color: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.region-item input:checked + .region-check {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.region-item input:checked + .region-check::after {
  opacity: 1;
}

/* Generate Button */
.generate-section {
  text-align: center;
}

.generate-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 40px;
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--secondary-color) 100%
  );
  border: none;
  border-radius: var(--border-radius-xl);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 8px 25px rgba(74, 144, 217, 0.4);
  position: relative;
  overflow: hidden;
}

.generate-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.generate-btn:hover::before {
  left: 100%;
}

.generate-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(74, 144, 217, 0.5);
}

.generate-btn:active {
  transform: translateY(-1px);
}

.generate-btn.extended {
  background: linear-gradient(135deg, #6b5ce7 0%, #9b59b6 100%);
  box-shadow: 0 8px 25px rgba(107, 92, 231, 0.4);
}

.generate-btn.extended:hover {
  box-shadow: 0 12px 35px rgba(107, 92, 231, 0.5);
}

.btn-icon {
  display: flex;
  align-items: center;
}

/* Progress Section */
.progress-section {
  display: none;
}

.progress-section.active {
  display: block;
}

.progress-card {
  padding: 28px;
  text-align: center;
}

.progress-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 20px;
}

.progress-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-status {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* Result Section */
.result-section {
  display: none;
}

.result-section.active {
  display: block;
}

.result-card {
  padding: 40px;
  text-align: center;
}

.result-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-icon.success {
  background: rgba(76, 175, 80, 0.2);
  color: var(--success-color);
}

.result-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
}

.result-filename {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

.result-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.result-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.download-btn:hover {
  background: #45a049;
  transform: translateY(-2px);
}

.preview-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
  border: 1px solid var(--glass-border);
}

.preview-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Page Loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.page-loader.active {
  opacity: 1;
  visibility: visible;
}

.loader-content {
  text-align: center;
}

.loader-spinner {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  animation: loaderSpin 2s linear infinite;
}

@keyframes loaderSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.loader-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.loader-text {
  font-size: 1rem;
  color: var(--text-white);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 80px 20px 20px;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .top-bar {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .page-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 768px) {
  .main-card {
    padding: 32px 24px;
  }

  .card-title {
    font-size: 1.5rem;
  }

  .actions-grid {
    grid-template-columns: 1fr;
  }

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

  .options-grid {
    grid-template-columns: 1fr;
  }

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

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

  .checkbox-group {
    grid-template-columns: 1fr;
  }

  .generate-btn {
    width: 100%;
    justify-content: center;
  }

  .result-actions {
    flex-direction: column;
  }

  .result-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 80px 16px 16px;
  }

  .top-bar {
    padding: 12px 16px;
  }

  .top-bar-right {
    flex-wrap: wrap;
    justify-content: center;
  }

  .page-title {
    font-size: 1.25rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .upload-area {
    padding: 24px 16px;
  }

  .report-header-card {
    padding: 24px;
  }

  .duration-options {
    grid-template-columns: 1fr;
  }

  .regions-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   SCROLLBAR STYLES
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ============================================
   SELECTION STYLES
   ============================================ */

::selection {
  background: rgba(74, 144, 217, 0.3);
  color: white;
}

/* ============================================
   FOCUS STYLES
   ============================================ */

*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .sidebar,
  .top-bar,
  .mobile-menu-toggle,
  .weather-canvas,
  .clouds-container,
  .floating-icons {
    display: none !important;
  }

  .main-content {
    margin-left: 0;
    padding: 20px;
  }

  .glass-card {
    background: white;
    border: 1px solid #ddd;
    box-shadow: none;
  }
}