/* CookhamTraffic.co.uk - Styles */
/* Design: Clean, utilitarian, road-sign inspired aesthetic */

:root {
    /* Core palette - inspired by UK road signage */
    --color-primary: #1a2e44;
    --color-primary-light: #2d4a6f;
    --color-secondary: #f0f4f8;
    --color-accent: #0066cc;
    
    /* Status colors */
    --color-good: #28a745;
    --color-good-bg: #d4edda;
    --color-moderate: #ffc107;
    --color-moderate-bg: #fff3cd;
    --color-heavy: #fd7e14;
    --color-heavy-bg: #ffe5d0;
    --color-severe: #dc3545;
    --color-severe-bg: #f8d7da;
    --color-closed: #6c757d;
    --color-closed-bg: #e9ecef;
    --color-flood: #17a2b8;
    --color-flood-bg: #d1ecf1;
    
    /* Text */
    --color-text: #1a2e44;
    --color-text-muted: #64748b;
    --color-text-inverse: #ffffff;
    
    /* Surfaces */
    --color-surface: #ffffff;
    --color-surface-raised: #f8fafc;
    --color-border: #e2e8f0;
    
    /* Typography */
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Space Mono', ui-monospace, monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

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

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Utility */
.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;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header */
.site-header {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

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

.logo-area {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
}

.site-header h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.8;
}

.header-status {
    display: flex;
    align-items: center;
}

.update-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    background: rgba(255,255,255,0.1);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--color-good);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.update-indicator.stale .pulse {
    background: var(--color-moderate);
}

.update-indicator.error .pulse {
    background: var(--color-severe);
    animation: none;
}

/* Flood Alert Banner */
.flood-alert {
    background: var(--color-flood);
    color: var(--color-text-inverse);
    padding: var(--space-sm) 0;
}

.flood-alert-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.alert-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.alert-text {
    flex: 1;
    min-width: 200px;
}

.alert-text strong {
    display: block;
}

.alert-link {
    color: var(--color-text-inverse);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    padding: var(--space-xs) var(--space-sm);
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.alert-link:hover {
    background: rgba(255,255,255,0.3);
}

/* Hero / Routes Section */
.hero {
    padding: var(--space-xl) 0;
}

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

/* Route Card */
.route-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.route-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-border);
    transition: background var(--transition-fast);
}

.route-card.status-good::before { background: var(--color-good); }
.route-card.status-moderate::before { background: var(--color-moderate); }
.route-card.status-heavy::before { background: var(--color-heavy); }
.route-card.status-severe::before { background: var(--color-severe); }
.route-card.status-closed::before { background: var(--color-closed); }
.route-card.status-flooded::before { background: var(--color-flood); }

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

.route-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

.route-via {
    margin: var(--space-xs) 0 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.route-status-badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.route-status-badge.good {
    background: var(--color-good-bg);
    color: var(--color-good);
}

.route-status-badge.moderate {
    background: var(--color-moderate-bg);
    color: #856404;
}

.route-status-badge.heavy {
    background: var(--color-heavy-bg);
    color: #984c0c;
}

.route-status-badge.severe {
    background: var(--color-severe-bg);
    color: var(--color-severe);
}

.route-status-badge.closed, .route-status-badge.flooded {
    background: var(--color-closed-bg);
    color: var(--color-closed);
}

.route-times {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.time-block-small {
    text-align: center;
    padding: var(--space-sm);
    background: var(--color-surface-raised);
    border-radius: var(--radius-md);
}

.time-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.time-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-text);
}

.time-value.current {
    color: var(--color-primary);
}

.route-delay {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-surface-raised);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.delay-indicator {
    font-weight: 600;
}

.delay-indicator.positive {
    color: var(--color-severe);
}

.delay-indicator.negative {
    color: var(--color-good);
}

.delay-indicator.neutral {
    color: var(--color-text-muted);
}

.route-flooded {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-flood-bg);
    border-radius: var(--radius-md);
    color: var(--color-flood);
    font-weight: 600;
}

/* Skeleton loading */
.route-card.skeleton {
    pointer-events: none;
}

.skeleton-line {
    height: 1rem;
    background: linear-gradient(90deg, var(--color-border) 25%, var(--color-surface-raised) 50%, var(--color-border) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.skeleton-line.title {
    width: 60%;
    height: 1.25rem;
}

.skeleton-line.subtitle {
    width: 40%;
    height: 0.875rem;
}

.skeleton-block {
    height: 80px;
    background: linear-gradient(90deg, var(--color-border) 25%, var(--color-surface-raised) 50%, var(--color-border) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

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

/* Error display */
.error-display, .error-message {
    background: var(--color-severe-bg);
    color: var(--color-severe);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.error-message a {
    color: var(--color-severe);
}

/* Summary Section */
.summary-section {
    padding: var(--space-lg) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.summary-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-surface-raised);
    border-radius: var(--radius-md);
}

.summary-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
}

.summary-icon svg {
    width: 24px;
    height: 24px;
}

.summary-icon.good {
    background: var(--color-good-bg);
    color: var(--color-good);
}

.summary-icon.warning {
    background: var(--color-moderate-bg);
    color: #856404;
}

.summary-icon.flood {
    background: var(--color-flood-bg);
    color: var(--color-flood);
}

.summary-content {
    display: flex;
    flex-direction: column;
}

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

.summary-value {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-text);
}

/* Map Section */
.map-section {
    padding: var(--space-2xl) 0;
}

.map-section h2 {
    margin: 0 0 var(--space-lg);
    font-size: 1.5rem;
}

.map-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-lg);
    align-items: start;
}

@media (max-width: 768px) {
    .map-container {
        grid-template-columns: 1fr;
    }
}

.route-map {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.map-svg {
    width: 100%;
    height: auto;
    max-height: 400px;
}

.map-label {
    font-family: var(--font-primary);
    font-size: 10px;
    fill: var(--color-text-muted);
}

.map-label.main {
    font-size: 12px;
    font-weight: 600;
    fill: var(--color-text);
}

.route-overlay {
    fill: none;
    stroke: var(--color-border);
    opacity: 0.8;
    transition: stroke var(--transition-fast);
}

.route-overlay.good { stroke: var(--color-good); }
.route-overlay.moderate { stroke: var(--color-moderate); }
.route-overlay.heavy { stroke: var(--color-heavy); }
.route-overlay.severe { stroke: var(--color-severe); }
.route-overlay.closed { stroke: var(--color-closed); stroke-dasharray: 8 4; }

.map-legend {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    background: var(--color-surface);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
}

.legend-color {
    width: 24px;
    height: 4px;
    border-radius: 2px;
    background: var(--color-border);
}

.legend-color.good { background: var(--color-good); }
.legend-color.moderate { background: var(--color-moderate); }
.legend-color.heavy { background: var(--color-heavy); }
.legend-color.severe { background: var(--color-severe); }
.legend-color.closed { 
    background: repeating-linear-gradient(
        90deg,
        var(--color-closed),
        var(--color-closed) 6px,
        transparent 6px,
        transparent 10px
    );
}

/* Best Times Section */
.best-times-section {
    padding: var(--space-2xl) 0;
    background: var(--color-surface);
}

.best-times-section h2 {
    margin: 0 0 var(--space-sm);
    font-size: 1.5rem;
}

.section-intro {
    margin: 0 0 var(--space-xl);
    color: var(--color-text-muted);
}

.times-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.time-card {
    background: var(--color-surface-raised);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--color-border);
}

.time-card h3 {
    margin: 0 0 var(--space-md);
    font-size: 1rem;
    color: var(--color-text);
}

.time-block {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.time-block.busy {
    background: var(--color-severe-bg);
    border-left: 4px solid var(--color-severe);
}

.time-block.moderate {
    background: var(--color-moderate-bg);
    border-left: 4px solid var(--color-moderate);
}

.time-block.light {
    background: var(--color-good-bg);
    border-left: 4px solid var(--color-good);
}

.time-range {
    display: block;
    font-weight: 600;
    font-family: var(--font-mono);
    margin-bottom: var(--space-xs);
}

.time-desc {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.time-tip {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* FAQ Section */
.faq-section {
    padding: var(--space-2xl) 0;
}

.faq-section h2 {
    margin: 0 0 var(--space-xl);
    font-size: 1.5rem;
}

.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    border: 1px solid var(--color-border);
}

.faq-item h3 {
    margin: 0 0 var(--space-sm);
    font-size: 1rem;
    color: var(--color-text);
}

.faq-item p {
    margin: 0;
    color: var(--color-text-muted);
}

.faq-item a {
    color: var(--color-accent);
}

/* Related Section */
.related-section {
    padding: var(--space-2xl) 0;
    background: var(--color-surface);
}

.related-section h2 {
    margin: 0 0 var(--space-lg);
    font-size: 1.5rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.related-card {
    display: block;
    background: var(--color-surface-raised);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-decoration: none;
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.related-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.related-card h3 {
    margin: 0 0 var(--space-xs);
    font-size: 1rem;
    color: var(--color-text);
}

.related-card p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Footer */
.site-footer {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.site-footer h3 {
    margin: 0 0 var(--space-md);
    font-size: 1rem;
    opacity: 0.8;
}

.site-footer p {
    margin: 0 0 var(--space-sm);
    font-size: 0.875rem;
    opacity: 0.8;
}

.site-footer .disclaimer {
    font-size: 0.75rem;
    opacity: 0.6;
}

.footer-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--color-text-inverse);
    text-decoration: none;
    font-size: 0.875rem;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
}

.footer-meta {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 640px) {
    .site-header h1 {
        font-size: 1.25rem;
    }
    
    .subtitle {
        display: none;
    }
    
    .header-status .status-text {
        display: none;
    }
    
    .routes-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .flood-alert-content {
        flex-direction: column;
        text-align: center;
    }
}