:root {
    /* Brand Colors */
    --shift-a: #e53935;
    /* Red */
    --shift-b: #1e88e5;
    /* Blue */
    --shift-c: #43a047;
    /* Green */

    /* UI Colors */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #212121;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;

    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Header & Nav */
.app-header {
    background: var(--card-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    height: 60px;
}

.logo-container h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
}

.app-nav {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--bg-color);
    padding: 0.25rem;
    border-radius: 8px;
}

.app-nav button {
    border: none;
    background: transparent;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.app-nav button.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Main Layout */
main {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Today's Status */
.today-status {
    text-align: center;
    font-size: 1.35rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.today-status strong {
    font-weight: 800;
}

/* Calendar Styling */
.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.calendar-controls button {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
}

.calendar-controls h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.calendar-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.8rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.shift-red {
    color: var(--shift-a);
}

.shift-red .dot {
    background: var(--shift-a);
}

.shift-blue {
    color: var(--shift-b);
}

.shift-blue .dot {
    background: var(--shift-b);
}

.shift-green {
    color: var(--shift-c);
}

.shift-green .dot {
    background: var(--shift-c);
}

.calendar-grid-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    gap: 8px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    /* Reduced gap */
    margin-bottom: var(--spacing-md);
}

.day-cell {
    aspect-ratio: 1.2;
    /* More compact aspect ratio */
    min-height: 50px;
    background: var(--card-bg);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    border: 1px solid transparent;
    overflow: hidden;
    z-index: 1;
}

.day-cell.empty {
    background: transparent;
}

.day-cell.today {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.day-cell::before {
    content: attr(data-shift);
    position: absolute;
    font-size: 4rem;
    /* Reduced from 6.25rem */
    font-weight: 900;
    opacity: 0.08;
    z-index: -1;
    pointer-events: none;
    line-height: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.day-cell.shift-a {
    background: rgba(229, 57, 53, 0.08);
    color: var(--shift-a);
}

.day-cell.shift-a::before {
    content: 'A';
    color: var(--shift-a);
}

.day-cell.shift-b {
    background: rgba(30, 136, 229, 0.08);
    color: var(--shift-b);
}

.day-cell.shift-b::before {
    content: 'B';
    color: var(--shift-b);
}

.day-cell.shift-c {
    background: rgba(67, 160, 71, 0.08);
    color: var(--shift-c);
}

.day-cell.shift-c::before {
    content: 'C';
    color: var(--shift-c);
}

.header-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    /* Absolute centering for desktop */
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.header-controls input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .header-controls {
        display: none;
        /* Hide on mobile or move to a better place if needed, for now just hide to prevent clutter or maybe it should stack */
    }

    /* Let's actually make it stack nicely on mobile */
    .app-header {
        flex-wrap: wrap;
        height: auto;
        padding-bottom: var(--spacing-md);
        justify-content: center;
        position: relative;
        /* Ensure header is positioning context */
    }

    .header-controls {
        display: flex;
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
        /* Reset absolute positioning for mobile */
        position: static;
        left: auto;
        transform: none;
    }
}

/* Directory Styling */
.directory-controls {
    margin-bottom: var(--spacing-md);
}

#station-search {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.station-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.station-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: transform 0.2s, box-shadow 0.2s;
}

.station-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.station-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
}

.station-id {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-color);
}

.station-city {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.station-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.95rem;
}

.station-address {
    color: var(--text-primary);
}

.station-phone {
    color: var(--text-secondary);
    font-family: monospace;
    /* For better number alignment */
}

.station-phone a {
    color: var(--shift-b);
    text-decoration: none;
}

@media (max-width: 480px) {
    .app-header {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-md);
    }
}

/* Agency Tabs */
.agency-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.agency-tab {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.agency-tab:hover {
    background: var(--bg-color);
}

.agency-tab.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Footer */
.app-footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    background: var(--bg-color);
}

.app-footer p {
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}
/* Fix for mobile calendar overlap */
@media (max-width: 600px) {
    .day-cell {
        min-height: 0;
        /* Allow shrinking below 50px */
        aspect-ratio: 1.1;
        /* Slightly squarer on mobile */
    }

    .day-cell::before {
        font-size: 3rem;
        /* Smaller shift letter */
    }
}