/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Theme Variables */
:root[data-theme="dark"] {
    --bg-primary: #0B0F14;
    --bg-secondary: #1E2530;
    --bg-tertiary: #252D3A;
    --bg-quaternary: #2D3748;
    --text-primary: #E8EAED;
    --text-secondary: #9AA0A6;
    --text-tertiary: #5F6368;
    --border-color: #2D3748;
    --border-hover: #4A90E2;
    --shadow: rgba(0, 0, 0, 0.3);
}

:root[data-theme="light"] {
    --bg-primary: #F5F5F5;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F8F9FA;
    --bg-quaternary: #E8EAED;
    --text-primary: #202124;
    --text-secondary: #5F6368;
    --text-tertiary: #9AA0A6;
    --border-color: #DADCE0;
    --border-hover: #4A90E2;
    --shadow: rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dashboard Container */
.dashboard {
    max-width: 1800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
    transition: border-color 0.3s ease;
}

.header-left {
    display: flex;
    align-items: baseline;
    gap: 15px;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
}

.tagline {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 400;
    transition: color 0.3s ease;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all 0.25s ease;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: scale(1.08);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    user-select: none;
    transition: color 0.3s ease;
}

.theme-toggle-wrapper:hover .theme-label {
    color: var(--border-hover);
}

.theme-toggle #sun-icon,
.theme-toggle #moon-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s ease, transform 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    transition: transform 0.4s ease, filter 0.3s ease;
}

#sun-icon svg {
    fill: #facc15;
}

#moon-icon svg {
    fill: #60a5fa;
}

[data-theme='dark'] #sun-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(0deg);
}

[data-theme='dark'] #moon-icon {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(-90deg);
}

[data-theme='light'] #sun-icon {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(90deg);
}

[data-theme='light'] #moon-icon {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(0deg);
}

.theme-toggle:hover #sun-icon svg {
    filter: drop-shadow(0 0 10px rgba(250, 204, 21, 0.55));
}

.theme-toggle:hover #moon-icon svg {
    filter: drop-shadow(0 0 10px rgba(96, 165, 250, 0.55));
}

.theme-toggle:active #sun-icon,
.theme-toggle:active #moon-icon {
    transform: translate(-50%, -50%) scale(0.9);
}

/* Clock */
.clock {
    font-size: 1.8rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    background: var(--bg-secondary);
    padding: 12px 24px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

/* Controls */
.controls {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.control-group {
    position: relative;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

select,
input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    transition: all 0.2s;
}

select:focus,
input[type="text"]:focus {
    outline: none;
    border-color: var(--border-hover);
    background: var(--bg-tertiary);
}

input[type="text"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Search Results */
.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 8px 8px;
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    transition: all 0.3s ease;
}

.search-results.active {
    display: block;
}

.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s;
}

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

.search-result-item:hover {
    background: var(--bg-tertiary);
}

.search-result-item.selected {
    background: var(--bg-quaternary);
}

.stop-name {
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.stop-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 2px;
    transition: color 0.3s ease;
}

/* Main Strip Map */
.main-map-container {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    min-height: 400px;
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
}

.strip-map-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--text-tertiary);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

#main-strip-map svg {
    display: block;
    margin: 0 auto;
    cursor: grab;
    touch-action: none;
}

#main-strip-map svg:active {
    cursor: grabbing;
}

/* Map Controls */
.map-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 8px;
    z-index: 10;
}

.map-control-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-control-btn:hover {
    background: var(--bg-quaternary);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

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

/* Train Arrivals */
.arrivals-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.arrivals-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.3s ease;
}

.arrivals-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.direction-icon {
    font-size: 1.5rem;
    opacity: 0.7;
}

.train-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.train-card {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid;
    transition: all 0.2s;
}

.train-card:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px var(--shadow);
}

.train-destination {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.train-stops {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 4px;
    transition: color 0.3s ease;
}

.train-time {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.train-time.arriving { color: #34A853; }
.train-time.approaching { color: #FF9500; }
.train-time.departing { color: #EA4335; }

/* Trip Planner */
.trip-planner {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.trip-planner-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.trip-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.plan-btn {
    align-self: end;
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.plan-btn:hover {
    background: var(--bg-quaternary);
    border-color: var(--border-hover);
}

.plan-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.trip-summary {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 16px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.trip-summary p {
    margin: 6px 0;
}

/* Strip Map SVG Styles */
.strip-map-track {
    stroke-linecap: round;
}

.strip-map-stop {
    transition: r 0.2s;
}

.stop-clickable:hover .strip-map-stop {
    r: 11;
}

.strip-map-stop.current-stop {
    stroke-width: 4;
    stroke: #FFFFFF;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.6));
}

:root[data-theme='light'] .strip-map-stop.current-stop {
    stroke: #202124;
    filter: drop-shadow(0 0 8px rgba(32, 33, 36, 0.4));
}

.strip-map-label {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    fill: #E8EAED;
    user-select: none;
    transition: fill 0.3s ease;
}

.strip-map-label.current-stop-label {
    font-weight: 700;
    fill: var(--text-primary);
}

:root[data-theme='light'] .strip-map-label {
    fill: #202124;
}

.line-badge {
    display: inline-block;
    color: #fff;
    font-weight: 600;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 4px;
}

.transfer-badge {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 11px;
    font-weight: 700;
    fill: #FFFFFF;
    transition: fill 0.3s ease;
}

.accessibility-icon {
    fill: #4A90E2;
    transition: fill 0.3s ease;
}

:root[data-theme='light'] .accessibility-icon {
    fill: #0057B8;
}

/* Line Colors */
.line-L1 { color: #ED230D; }
.line-L2 { color: #F1B517; }
.line-L3 { color: #016A16; }
.line-L4 { color: #49108B; }
.line-L5 { color: #00209F; }
.line-L6 { color: #76453B; }

/* Header & Footer Alignment */
.sim-header,
.sim-footer {
    width: 100%;
}

.sim-header .header-container,
.sim-footer .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.sim-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.sim-header .logo {
    font-size: 1.75rem;
    font-weight: 700;
}

.sim-header .tagline {
    font-size: 1rem;
    color: var(--text-secondary);
}

.sim-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
    text-align: center;
    padding: 1rem 0;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.sim-footer .footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.sim-footer a {
    color: var(--text-primary);
    text-decoration: underline;
    transition: color 0.3s ease;
}

.sim-footer a:hover {
    color: var(--border-hover);
    text-decoration: none;
}

.sim-footer a:visited {
    color: var(--text-primary);
}

/* Performance Optimizations */
.theme-toggle,
.map-control-btn,
.train-card {
    will-change: transform;
}

.search-results {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .arrivals-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .controls {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .clock {
        font-size: 1.5rem;
        padding: 10px 20px;
    }
    
    .map-controls {
        top: 10px;
        right: 10px;
    }
    
    .map-control-btn {
        width: 36px;
        height: 36px;
        font-size: 1.3rem;
    }
    
    .trip-controls {
        grid-template-columns: 1fr;
    }
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-quaternary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}