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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 20px;
    min-height: 100vh;
    -webkit-text-size-adjust: 100%;
    touch-action: manipulation;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: #fff;
}

.timetable-info {
    background: #2a2a2a;
    padding: 15px;
    border-radius: 8px;
    margin: 0 auto 20px;
    max-width: 800px;
    text-align: center;
    display: none; /* Hidden until timetable loaded */
}

.timetable-info.visible {
    display: block;
}

.timetable-name {
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 5px;
}

.timetable-date {
    font-size: 14px;
    color: #b0b0b0;
}

.timetable-selector {
    background: #2a2a2a;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: none; /* Hidden - will be used in future */
    justify-content: center;
}

.timetable-selector label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: bold;
}

.timetable-selector select {
    background: #3a3a3a;
    color: #e0e0e0;
    border: 1px solid #4a4a4a;
    padding: 8px 15px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    min-width: 200px;
}

.timetable-selector select:hover {
    background: #4a4a4a;
}

.controls {
    background: #2a2a2a;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.time-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.time-display {
    background: #3a3a3a;
    color: #e0e0e0;
    border: 1px solid #4a4a4a;
    padding: 6px 15px;
    border-radius: 4px;
    font: bold 16px/1;
    min-width: 80px;
    text-align: center;
}

.time-btn,
.live-btn {
    background: #4a4a4a;
    color: #e0e0e0;
    border: 1px solid #5a5a5a;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color .2s;
}

.time-btn {
    padding: 6px 12px;
    font-size: 18px;
}

.time-btn:hover,
.live-btn:hover:not(:disabled) {
    background: #5a5a5a;
}

.time-btn:active {
    background: #3a3a3a;
}

.live-btn {
    padding: 8px 20px;
    font-size: 14px;
}

.live-btn:disabled {
    background: #2a2a2a;
    border-color: #3a3a3a;
    color: #666;
    cursor: not-allowed;
}

.tracker-container,
.status-panel {
    background: #2a2a2a;
    border-radius: 8px;
    padding: 20px;
    margin: 0 auto 20px;
    max-width: 800px;
}

.station {
    background: #404040;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 2px;
    position: relative;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.station-name {
    font-weight: bold;
    font-size: 16px;
    z-index: 1;
}

.track-section {
    background: #333;
    position: relative;
    min-height: 100px;
    margin-bottom: 2px;
    display: flex;
    align-items: center;
}

.track-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #555;
    transform: translateX(-50%);
}

.train {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
    z-index: 2;
}

.train.northbound {
    left: 10%;
    flex-direction: row;
}

.train.southbound {
    right: 10%;
    flex-direction: row-reverse;
}

.train-icon {
    font-size: 20px;
}

.train-label {
    display: flex;
    flex-direction: column;
    font-size: 11px;
}

.train-number {
    font-weight: bold;
}

.direction-arrow {
    font-size: 14px;
}

.status-panel h2 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #fff;
}

.train-status {
    background: #333;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 10px;
    border-left: 4px solid;
}

.train-status-header {
    font-weight: bold;
    margin-bottom: 6px;
    font-size: 14px;
}

.train-status-detail {
    font-size: 13px;
    color: #b0b0b0;
}

.system-status {
    background: #2a2a2a;
    border-radius: 8px;
    padding: 12px 20px;
    margin: 0 auto 20px;
    max-width: 800px;
    text-align: center;
    font-size: 13px;
}

.system-status.online {
    color: #4ade80;
}

.system-status.offline {
    color: #ef4444;
}

/* Desktop Layout - Two Column */
@media (min-width: 1024px) {
    body {
        padding: 0;
        margin: 0;
        display: flex;
        height: 100vh;
        overflow: hidden;
    }
    
    /* Create left column wrapper using flexbox */
    body::before {
        content: '';
        position: fixed;
        left: 0;
        top: 0;
        width: 50%;
        height: 100vh;
        background: #1a1a1a;
        z-index: -1;
    }
    
    /* Left column content */
    h1 {
        position: fixed;
        top: 0;
        left: 0;
        width: 50%;
        padding: 30px 30px 10px 30px;
        margin-bottom: 0;
        font-size: 32px;
        background: #1a1a1a;
        z-index: 10;
    }
    
    .timetable-info {
        position: fixed;
        top: 90px;
        left: 30px;
        right: 50%;
        width: calc(50% - 60px);
        max-width: none;
        margin: 0;
        padding: 20px;
    }
    
    .controls {
        position: fixed;
        top: 180px;
        left: 30px;
        right: 50%;
        width: calc(50% - 60px);
        max-width: none;
        margin: 0;
        padding: 20px;
    }
    
    .status-panel {
        position: fixed;
        top: 280px;
        bottom: 80px;
        left: 30px;
        right: 50%;
        width: calc(50% - 60px);
        max-width: none;
        margin: 0;
        padding: 25px;
        overflow-y: auto;
    }
    
    .system-status {
        position: fixed;
        bottom: 20px;
        left: 30px;
        right: 50%;
        width: calc(50% - 60px);
        max-width: none;
        margin: 0;
        padding: 15px 25px;
        font-size: 14px;
    }
    
    /* Right column content */
    .tracker-container {
        position: fixed;
        top: 0;
        right: 0;
        width: 50%;
        height: 100vh;
        max-width: none;
        margin: 0;
        border-radius: 0;
        overflow-y: auto;
        padding: 30px;
    }
    
    .timetable-name {
        font-size: 22px;
    }
    
    .timetable-date {
        font-size: 16px;
    }
    
    .status-panel h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .train-status {
        padding: 15px;
        margin-bottom: 12px;
    }
    
    .train-status-header {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .train-status-detail {
        font-size: 14px;
    }
}

/* Extra large desktop - more breathing room */
@media (min-width: 1600px) {
    h1 {
        font-size: 36px;
        padding: 40px 50px 15px 50px;
    }
    
    .timetable-info {
        top: 110px;
        left: 50px;
        width: calc(50% - 100px);
    }
    
    .controls {
        top: 210px;
        left: 50px;
        width: calc(50% - 100px);
    }
    
    .status-panel {
        top: 310px;
        left: 50px;
        width: calc(50% - 100px);
    }
    
    .system-status {
        left: 50px;
        width: calc(50% - 100px);
    }
    
    .tracker-container {
        padding: 40px 50px;
    }
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .timetable-name {
        font-size: 16px;
    }
    
    .timetable-date {
        font-size: 13px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .controls label {
        justify-content: space-between;
    }
    
    .train {
        font-size: 11px;
    }
    
    .train-icon {
        font-size: 16px;
    }
}