/* M-Indicator App - Sky Blue Theme */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Sky Blue Color Palette */
    --primary-color: #87CEEB;
    --primary-dark: #4682B4;
    --primary-light: #B0E0E6;
    --secondary-color: #FFA500;
    --accent-color: #FF6B6B;
    
    /* Neutral Colors */
    --text-primary: #2C3E50;
    --text-secondary: #7F8C8D;
    --text-light: #BDC3C7;
    --background: #F8FAFE;
    --surface: #FFFFFF;
    --border-color: #E3F2FD;
    --shadow: rgba(135, 206, 235, 0.15);
    
    /* Status Colors */
    --success-color: #27AE60;
    --warning-color: #F39C12;
    --error-color: #E74C3C;
    --info-color: #3498DB;
    
    /* Layout */
    --header-height: 70px;
    --nav-height: 70px;
    --border-radius: 16px;
    --border-radius-small: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(135, 206, 235, 0.1);
    --shadow-md: 0 4px 12px rgba(135, 206, 235, 0.15);
    --shadow-lg: 0 8px 24px rgba(135, 206, 235, 0.2);
    --shadow-xl: 0 16px 48px rgba(135, 206, 235, 0.25);
}

body {
    font-family: var(--font-family);
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: var(--font-size-md);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
    color: white;
    animation: fadeInUp 1s ease;
}

.train-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: trainMove 2s ease-in-out infinite;
}

.loading-text {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.loading-subtitle {
    font-size: var(--font-size-md);
    opacity: 0.8;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* App Container */
.app-container {
    max-width: 100%;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo-icon {
    font-size: var(--font-size-xl);
}

.app-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

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

.icon-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: var(--font-size-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    background: var(--surface);
    border-top: 1px solid var(--border-color);
    position: sticky;
    bottom: 0;
    z-index: 50;
    box-shadow: 0 -2px 12px rgba(135, 206, 235, 0.1);
}

.nav-tab {
    flex: 1;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    min-height: var(--nav-height);
}

.nav-tab i {
    font-size: var(--font-size-lg);
    transition: all 0.3s ease;
}

.nav-tab span {
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.nav-tab.active {
    color: var(--primary-color);
    background: rgba(135, 206, 235, 0.1);
}

.nav-tab.active i {
    transform: scale(1.1);
}

.nav-tab:hover:not(.active) {
    color: var(--primary-dark);
    background: rgba(135, 206, 235, 0.05);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: calc(var(--nav-height) + var(--spacing-md));
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Cards */
.card {
    background: var(--surface);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.quick-search-card,
.weather-card,
.favorites-card,
.updates-card {
    @extend .card;
    padding: var(--spacing-lg);
}

.quick-search-card h2 {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quick-search-card i {
    color: var(--primary-color);
}

/* Search Form */
.search-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.search-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--text-secondary);
    z-index: 2;
}

.input-wrapper input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 50px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-md);
    background: var(--surface);
    transition: all 0.3s ease;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.1);
}

.swap-btn {
    position: absolute;
    right: var(--spacing-sm);
    background: var(--primary-light);
    border: none;
    color: var(--primary-dark);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 2;
}

.swap-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(180deg);
}

.search-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Weather Card */
.weather-card {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.weather-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.weather-icon {
    font-size: var(--font-size-xxl);
    color: var(--secondary-color);
}

.weather-temp {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.weather-location {
    font-size: var(--font-size-md);
    font-weight: 600;
}

.weather-desc {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

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

.weather-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

/* Favorites Card */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.card-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-header i {
    color: var(--accent-color);
}

.add-favorite-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.add-favorite-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

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

.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(135, 206, 235, 0.05);
    border-radius: var(--border-radius-small);
    cursor: pointer;
    transition: all 0.3s ease;
}

.favorite-item:hover {
    background: rgba(135, 206, 235, 0.1);
    transform: translateX(4px);
}

.favorite-route {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.favorite-stations {
    font-weight: 600;
    color: var(--text-primary);
}

.favorite-time {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.favorite-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.favorite-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-small);
    transition: all 0.3s ease;
}

.favorite-btn:hover {
    background: rgba(135, 206, 235, 0.1);
    color: var(--primary-color);
}

/* Updates Card */
.updates-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.updates-card h3 i {
    color: var(--warning-color);
}

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

.update-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(135, 206, 235, 0.05);
    border-radius: var(--border-radius-small);
    border-left: 4px solid var(--primary-color);
}

.update-time {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 600;
    min-width: 80px;
}

.update-text {
    flex: 1;
    font-size: var(--font-size-md);
    color: var(--text-primary);
}

.update-status {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.update-status.normal {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
}

.update-status.delay {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.update-status.disruption {
    background: rgba(231, 76, 60, 0.1);
    color: var(--error-color);
}

/* Schedule Tab */
.schedule-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.schedule-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.schedule-header i {
    color: var(--primary-color);
}

.schedule-filters {
    display: flex;
    gap: var(--spacing-xs);
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(135, 206, 235, 0.1);
    border: 1px solid rgba(135, 206, 235, 0.2);
    color: var(--primary-color);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.route-info {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.route-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.route-stations {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.route-distance {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.schedule-results {
    background: var(--surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.train-result {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.train-result:hover {
    background: rgba(135, 206, 235, 0.05);
}

.train-result:last-child {
    border-bottom: none;
}

.train-time {
    min-width: 120px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.departure-time {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.arrival-time {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.train-details {
    flex: 1;
    margin-left: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.train-type {
    font-weight: 600;
    color: var(--text-primary);
}

.train-duration {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.train-info-extra {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.platform-info {
    background: rgba(135, 206, 235, 0.1);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.train-status-indicator {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.train-status-indicator.on-time {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
}

.train-status-indicator.delayed {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

/* Live Tracking Tab */
.live-tracking {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.live-tracking h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.live-tracking i {
    color: var(--success-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.line-selector {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.line-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(135, 206, 235, 0.1);
    border: 2px solid rgba(135, 206, 235, 0.2);
    color: var(--primary-color);
    border-radius: var(--border-radius-small);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 100px;
}

.line-btn:hover,
.line-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.live-trains-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.live-train-item {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--success-color);
    transition: all 0.3s ease;
}

.live-train-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.train-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.train-number {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.train-route {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.train-status {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.current-location {
    font-weight: 600;
    color: var(--text-primary);
}

.delay-info {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-small);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-align: center;
}

.delay-info.on-time {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
}

.delay-info.delayed {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
}

.next-stations {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
}

.next-station {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Routes Tab */
.routes-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.routes-container h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.routes-container i {
    color: var(--info-color);
}

.route-planner {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.journey-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.option-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.option-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    background: var(--surface);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.option-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.1);
}

.route-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.route-option {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.route-option:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.route-option.selected {
    border-color: var(--primary-color);
    background: rgba(135, 206, 235, 0.05);
}

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

.route-duration {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.route-cost {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--success-color);
}

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

.route-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(135, 206, 235, 0.05);
    border-radius: var(--border-radius-small);
}

.step-icon {
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
}

.step-details {
    flex: 1;
}

.step-instruction {
    font-weight: 600;
    color: var(--text-primary);
}

.step-time {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* More Tab */
.more-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.more-options h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.option-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.option-card {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    border: 2px solid transparent;
}

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

.option-card i {
    font-size: var(--font-size-xxl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: block;
}

.option-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.option-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-md);
    line-height: 1.5;
}

/* Autocomplete Dropdown */
.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    box-shadow: var(--shadow-md);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.autocomplete-dropdown.show {
    display: block;
}

.autocomplete-item {
    padding: var(--spacing-md);
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.autocomplete-item:hover,
.autocomplete-item.highlighted {
    background: rgba(135, 206, 235, 0.1);
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.station-name {
    font-weight: 600;
    color: var(--text-primary);
}

.station-line {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(-20px);
    transition: all 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0);
}

/* Bottom Sheet */
.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--surface);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    box-shadow: var(--shadow-xl);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 1000;
    max-height: 70vh;
}

.bottom-sheet.show {
    transform: translateY(0);
}

.bottom-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--text-light);
    border-radius: 2px;
    margin: var(--spacing-md) auto var(--spacing-sm);
    cursor: pointer;
}

.bottom-sheet-content {
    padding: 0 var(--spacing-lg) var(--spacing-xl);
    max-height: calc(70vh - 60px);
    overflow-y: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 24px;
    }
    
    .main-content {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .weather-card {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .schedule-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .train-result {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .train-time {
        min-width: auto;
        flex-direction: row;
        justify-content: space-between;
    }
    
    .train-details {
        margin-left: 0;
    }
    
    .journey-options {
        grid-template-columns: 1fr;
    }
    
    .option-grid {
        grid-template-columns: 1fr;
    }
    
    .line-selector {
        flex-direction: column;
    }
    
    .line-btn {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0;
    }
    
    .app-header h1 {
        font-size: var(--font-size-lg);
    }
    
    .nav-tab span {
        display: none;
    }
    
    .nav-tab {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .quick-search-card,
    .weather-card,
    .favorites-card,
    .updates-card {
        padding: var(--spacing-md);
    }
    
    .weather-main {
        flex-direction: column;
        text-align: center;
    }
    
    .update-item {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .update-time {
        min-width: auto;
        text-align: left;
    }
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #FFFFFF;
        --text-secondary: #B0B0B0;
        --text-light: #808080;
        --background: #121212;
        --surface: #1E1E1E;
        --border-color: #333333;
        --shadow: rgba(0, 0, 0, 0.3);
    }
}

/* Animation utilities */
.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-in-up {
    animation: slideInUp 0.5s ease;
}

@keyframes slideInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.bounce-in {
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, 
        rgba(135, 206, 235, 0.1) 25%, 
        rgba(135, 206, 235, 0.2) 50%, 
        rgba(135, 206, 235, 0.1) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--border-radius-small);
}

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

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

button:focus,
input:focus,
select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.3);
}

/* Print styles */
@media print {
    .nav-tabs,
    .header-actions,
    .bottom-sheet,
    .modal-overlay {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
        margin: 0;
        max-width: 100%;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}