/* F1 NextRace — Dark Dashboard Theme */
:root {
    --bg: #15151E;
    --surface: #1F1F2E;
    --surface-hover: #282840;
    --accent: #E10600;
    --teal: #00D2BE;
    --text: #FFFFFF;
    --text-secondary: #8B8BA3;
    --text-muted: #555568;
    --border: #2A2A3C;
    --radius: 12px;
    --radius-sm: 8px;
}

/* Light Theme Override */
html[data-theme="light"] {
    --bg: #F2F2F7;
    --surface: #FFFFFF;
    --surface-hover: #E8E8ED;
    --text: #1A1A1A;
    --text-secondary: #555555;
    --text-muted: #999999;
    --border: #D5D5DC;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 16px;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Layout — fluid with comfortable max */
.app {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
}

@media (min-width: 768px) {
    .app {
        max-width: 960px;
        padding: 0 40px;
    }
}

@media (min-width: 1200px) {
    .app {
        max-width: 1100px;
        padding: 0 60px;
    }
}

/* ── Top Bar ── */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.topbar-brand {
    display: flex;
    align-items: center;
    min-width: 0;
    overflow: hidden;
}

.topbar-logo {
    height: 44px;
    width: auto;
    max-width: 100%;
    color: var(--text);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background 0.15s;
    display: flex;
    align-items: center;
}

.btn-icon:hover {
    color: var(--text);
    background: var(--surface);
}

.btn-icon-question {
    font-size: 1rem;
    color: var(--text-muted);
}

.push-text {
    display: none;
}

@media (min-width: 768px) {
    .topbar {
        padding: 24px 0;
    }

    .topbar-logo {
        height: 52px;
    }

    .btn-icon {
        font-size: 1.4rem;
        padding: 10px;
    }

    .btn-icon-question {
        font-size: 1.1rem;
    }
}

@media (min-width: 1200px) {
    .topbar-logo {
        height: 60px;
    }
}

/* ── Race Hero ── */
.race-hero {
    text-align: center;
    padding: 36px 0 30px;
}

.race-hero-name {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.race-hero-location {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.race-hero-dates {
    font-size: 0.95rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (min-width: 768px) {
    .race-hero {
        padding: 56px 0 44px;
    }

    .race-hero-name {
        font-size: 2.8rem;
        letter-spacing: 2px;
        margin-bottom: 12px;
    }

    .race-hero-location {
        font-size: 1.25rem;
        margin-bottom: 6px;
    }

    .race-hero-dates {
        font-size: 1.1rem;
        letter-spacing: 1px;
    }
}

@media (min-width: 1200px) {
    .race-hero {
        padding: 64px 0 52px;
    }

    .race-hero-name {
        font-size: 3.2rem;
    }

    .race-hero-location {
        font-size: 1.35rem;
    }

    .race-hero-dates {
        font-size: 1.2rem;
    }
}

/* ── Day Group ── */
.day-group {
    margin-bottom: 24px;
}

.day-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 0 0 10px;
}

.day-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
}

@media (min-width: 768px) {
    .day-group {
        margin-bottom: 32px;
    }

    .day-label {
        font-size: 0.9rem;
        letter-spacing: 2px;
        padding: 0 0 12px;
    }
}

/* ── Session Row ── */
.session-row {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    gap: 14px;
    transition: background 0.15s;
}

.session-row + .session-row {
    border-top: 1px solid var(--border);
}

@media (min-width: 768px) {
    .session-row {
        padding: 22px 32px;
        gap: 20px;
    }
}

@media (min-width: 1200px) {
    .session-row {
        padding: 24px 40px;
    }
}

/* Status indicator */
.session-status {
    flex-shrink: 0;
    width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-check {
    color: var(--teal);
    font-size: 0.95rem;
}

.status-live {
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    animation: live-pulse 2s ease-in-out infinite;
    box-shadow: 0 0 6px var(--accent);
}

.status-upcoming {
    width: 7px;
    height: 7px;
    background: var(--text-muted);
    border-radius: 50%;
}

.status-race {
    color: var(--accent);
    font-size: 0.9rem;
}

@media (min-width: 768px) {
    .session-status {
        width: 28px;
    }

    .status-check {
        font-size: 1.1rem;
    }

    .status-live {
        width: 14px;
        height: 14px;
    }

    .status-upcoming {
        width: 8px;
        height: 8px;
    }

    .status-race {
        font-size: 1.05rem;
    }
}

/* Session info */
.session-info {
    flex: 1;
    min-width: 0;
}

.session-name {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-time {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .session-name {
        font-size: 1.2rem;
    }

    .session-time {
        font-size: 1.1rem;
    }
}

@media (min-width: 1200px) {
    .session-name {
        font-size: 1.3rem;
    }

    .session-time {
        font-size: 1.15rem;
    }
}

/* Past session */
.session-row--past .session-name {
    color: var(--text-muted);
}

.session-row--past .session-time {
    color: var(--text-muted);
}

/* Live session */
.session-row--live {
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    box-shadow: inset 4px 0 0 var(--accent);
}

.session-row--live .session-name {
    color: var(--text);
    font-weight: 600;
}

.session-row--live .session-time {
    color: var(--text);
}

.live-badge {
    background: var(--accent);
    color: #FFFFFF;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 3px 10px;
    border-radius: 4px;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .live-badge {
        font-size: 0.75rem;
        padding: 4px 12px;
    }
}

/* Next upcoming session */
.session-row--next {
    background: color-mix(in srgb, var(--teal) 8%, transparent);
    box-shadow: inset 4px 0 0 var(--teal);
}

.session-row--next .session-name {
    color: var(--text);
    font-weight: 600;
}

.session-row--next .session-time {
    color: var(--text);
}

.status-next {
    color: var(--teal);
    font-size: 0.85rem;
}

.next-badge {
    background: var(--teal);
    color: #1A1A1A;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 3px 10px;
    border-radius: 4px;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    .status-next {
        font-size: 1rem;
    }

    .next-badge {
        font-size: 0.75rem;
        padding: 4px 12px;
    }
}

/* Race session accent */
.session-row--race .session-name {
    color: var(--accent);
    font-weight: 600;
}

/* Live pulse animation */
@keyframes live-pulse {
    0%, 100% {
        box-shadow: 0 0 4px var(--accent);
        opacity: 1;
    }
    50% {
        box-shadow: 0 0 12px var(--accent), 0 0 20px color-mix(in srgb, var(--accent) 30%, transparent);
        opacity: 0.8;
    }
}

/* ── Circuit Stats ── */
.circuit-section {
    padding: 28px 0 36px;
}

.circuit-heading {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.circuit-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.stat-box {
    background: var(--surface);
    border-radius: var(--radius-sm);
    padding: 16px 12px;
    text-align: center;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

@media (max-width: 420px) {
    .circuit-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .circuit-section {
        padding: 40px 0 52px;
    }

    .circuit-heading {
        font-size: 0.9rem;
        letter-spacing: 2px;
        margin-bottom: 16px;
    }

    .circuit-grid {
        gap: 16px;
    }

    .stat-box {
        padding: 28px 20px;
    }

    .stat-value {
        font-size: 1.4rem;
        margin-bottom: 6px;
    }

    .stat-label {
        font-size: 0.85rem;
    }
}

@media (min-width: 1200px) {
    .stat-box {
        padding: 32px 24px;
    }

    .stat-value {
        font-size: 1.55rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }
}

/* ── Modal — dark theme override ── */
.modal-content {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.modal-header {
    background: var(--accent);
    border-bottom: none;
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 16px 20px;
}

.modal-title {
    font-weight: 600;
    font-size: 1rem;
    color: #FFFFFF;
}

.modal-body {
    padding: 20px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.modal-body b {
    color: var(--text);
}

.modal-body ul {
    padding-left: 1.25rem;
    margin: 10px 0;
}

.modal-body li {
    margin: 4px 0;
}

.modal-footer {
    border-top: 1px solid var(--border);
    padding: 12px 20px;
}

.btn-primary {
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 24px;
    font-weight: 500;
    font-size: 0.95rem;
    color: #FFFFFF;
}

.btn-primary:hover,
.btn-primary:focus {
    background: #C40500;
}

/* ── Footer ── */
.footer {
    text-align: center;
    padding: 20px 0 32px;
    border-top: 1px solid var(--border);
    margin-top: 8px;
}

.footer-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* ── Theme Toggle ── */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background 0.15s;
    display: flex;
    align-items: center;
}

.theme-toggle:hover {
    color: var(--text);
    background: var(--surface);
}

@media (min-width: 768px) {
    .theme-toggle {
        font-size: 1.4rem;
        padding: 10px;
    }
}

/* Accessibility */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Print */
@media print {
    body {
        background: #fff;
        color: #000;
    }

    .topbar, .footer {
        display: none;
    }

    .day-card, .stat-box {
        background: #f5f5f5;
        border: 1px solid #ddd;
    }
}