:root {
    --font-display: Georgia, "Times New Roman", serif;
    --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --bg-primary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-warm: #f59e0b;
    --accent-success: #10b981;
    --border-light: #e2e8f0;
    --shadow-soft: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-medium: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
}

.display-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-soft);
    position: relative;
    z-index: 100;
}

.academy-name {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.current-date {
    font-size: 1rem;
    color: var(--text-secondary);
}

.clock {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.display-container {
    height: calc(100vh - 72px);
    position: relative;
    overflow: hidden;
}

.panel {
    position: absolute;
    inset: 0;
    padding: 2rem 3rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    overflow: hidden;
}

.panel.active {
    opacity: 1;
    visibility: visible;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-light);
}

.panel-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.panel-icon svg,
.fullscreen-btn svg,
.no-classes svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 1.8;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.panel-title {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--text-primary);
}

.news-panel .panel-icon {
    background: linear-gradient(135deg, var(--accent-primary), #1d4ed8);
}

.news-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 2.5rem;
    height: calc(100% - 100px);
}

.news-content.no-image {
    grid-template-columns: 1fr;
}

.news-text {
    overflow: hidden;
}

.news-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.news-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.news-body {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-height: calc(100% - 150px);
    overflow-y: auto;
    padding-right: 1rem;
}

.news-body::-webkit-scrollbar,
.day-sessions::-webkit-scrollbar,
.events-grid::-webkit-scrollbar {
    width: 6px;
}

.news-body::-webkit-scrollbar-track,
.day-sessions::-webkit-scrollbar-track,
.events-grid::-webkit-scrollbar-track {
    background: var(--border-light);
    border-radius: 3px;
}

.news-body::-webkit-scrollbar-thumb,
.day-sessions::-webkit-scrollbar-thumb,
.events-grid::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

.schedule-panel .panel-icon {
    background: linear-gradient(135deg, var(--accent-success), #059669);
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.75rem;
    height: calc(100% - 100px);
}

.day-column {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
}

.day-header {
    background: var(--accent-primary);
    color: white;
    padding: 0.75rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
}

.day-header.today {
    background: linear-gradient(135deg, var(--accent-warm), #d97706);
}

.day-sessions {
    flex: 1;
    padding: 0.5rem;
    overflow-y: auto;
}

.session-card {
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 0.6rem;
    margin-bottom: 0.5rem;
    border-left: 3px solid var(--accent-primary);
}

.session-time {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 0.25rem;
}

.session-name {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-top: 0.15rem;
}

.no-classes {
    text-align: center;
    padding: 1rem 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    display: grid;
    justify-items: center;
    gap: 0.4rem;
}

.events-panel .panel-icon {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.event-list-shell {
    display: grid;
    gap: 0.85rem;
    height: calc(100% - 100px);
    overflow-y: auto;
    align-content: start;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    height: calc(100% - 100px);
    overflow-y: auto;
    align-content: start;
}

.event-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.25rem;
    box-shadow: var(--shadow-soft);
}

.event-section-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-weight: 600;
}

.event-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
}

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

.event-date-box {
    min-width: 50px;
    text-align: center;
    background: var(--bg-primary);
    border-radius: 8px;
    padding: 0.5rem;
}

.event-date-day {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.event-date-month {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.event-details {
    flex: 1;
}

.event-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.event-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.event-category {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    color: white;
    margin-top: 0.25rem;
    background: var(--accent-primary);
}

.event-category.belt-test {
    background: #ffc107;
    color: #3f3a21;
}

.event-notes {
    margin-top: 0.35rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.45;
}

.event-empty-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
}

.event-empty-card h3,
.event-preview-card h3 {
    margin: 0 0 0.5rem;
    font-family: var(--font-display);
    color: var(--text-primary);
}

.event-empty-card p,
.event-preview-card p,
.event-preview-notes {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.45;
}

.upcoming-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.event-preview-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 1.15rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-light);
    display: grid;
    gap: 0.65rem;
    align-content: start;
}

.event-preview-card.featured {
    border-color: rgba(245, 158, 11, 0.35);
    box-shadow: 0 14px 28px rgba(245, 158, 11, 0.12);
}

.event-preview-topline {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.event-preview-date {
    color: var(--text-muted);
    font-size: 0.82rem;
    font-weight: 600;
}

.event-preview-notes {
    font-size: 0.85rem;
}

.belt-test-panel .panel-icon {
    background: linear-gradient(135deg, var(--accent-warm), #d97706);
}

.featured-event-panel .panel-icon {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.belt-test-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100% - 100px);
    text-align: center;
}

.belt-test-badge {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.belt-test-title {
    font-family: var(--font-display);
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.belt-test-date {
    font-size: 1.75rem;
    color: var(--accent-warm);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.belt-test-time {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.spotlight-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-primary);
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.spotlight-notes {
    max-width: 760px;
    font-size: 1rem;
    line-height: 1.55;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.belt-test-countdown {
    margin-top: 2rem;
    display: flex;
    gap: 2rem;
}

.countdown-item {
    text-align: center;
}

.countdown-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-warm);
    line-height: 1;
}

.countdown-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.slideshow-panel {
    padding: 0;
}

.slideshow-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

.qr-panel .panel-icon {
    background: linear-gradient(135deg, #ec4899, #db2777);
}

.qr-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100% - 100px);
    text-align: center;
}

.qr-code-container {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    margin-bottom: 2rem;
}

.qr-code-image {
    display: block;
    width: 200px;
    height: 200px;
}

.qr-message {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    max-width: 600px;
}

.qr-submessage {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
}

.panel-indicators {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 100;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-light);
    transition: all 0.3s ease;
}

.indicator.active {
    width: 32px;
    border-radius: 5px;
    background: var(--accent-primary);
}

.fullscreen-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 6px;
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.fullscreen-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.fullscreen-btn.exit-btn {
    display: none;
}

body.is-fullscreen .fullscreen-btn.enter-btn {
    display: none;
}

body.is-fullscreen .fullscreen-btn.exit-btn {
    display: flex;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

body.is-fullscreen.show-controls .fullscreen-btn.exit-btn {
    opacity: 1;
    pointer-events: auto;
}

@media (max-width: 1400px) {
    .schedule-grid {
        grid-template-columns: repeat(4, 1fr);
        height: auto;
    }

    .panel {
        overflow-y: auto;
    }
}

@media (max-width: 1024px) {
    .display-header {
        padding: 1rem 1.25rem;
        gap: 1rem;
    }

    .academy-name {
        font-size: 1.35rem;
    }

    .header-right {
        gap: 1rem;
    }

    .display-container {
        height: calc(100vh - 88px);
    }

    .panel {
        padding: 1.5rem;
    }

    .news-title {
        font-size: 2rem;
    }

    .events-grid,
    .schedule-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}