:root {
    --color-bg: #f8f4ff;
    --color-surface: #ffffff;
    --color-primary: #7c3aed;
    --color-primary-light: #a78bfa;
    --color-accent: #f59e0b;
    --color-accent-bright: #fbbf24;
    --color-magenta: #ec4899;
    --color-cyan: #06b6d4;
    --color-text: #1e1b4b;
    --color-muted: #6366a0;
    --color-border: #e9e5ff;
    --shadow-sm: 0 2px 8px rgba(124, 58, 237, 0.08);
    --shadow-md: 0 12px 32px rgba(124, 58, 237, 0.12);
    --radius: 16px;
    --font-body: "DM Sans", system-ui, -apple-system, sans-serif;
    --font-display: "Fraunces", Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background:
        radial-gradient(circle at 0% 0%, rgba(236, 72, 153, 0.12), transparent 45%),
        radial-gradient(circle at 100% 0%, rgba(6, 182, 212, 0.1), transparent 40%),
        radial-gradient(circle at 50% 100%, rgba(251, 191, 36, 0.12), transparent 50%),
        var(--color-bg);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--color-primary);
}

/* Compact header */
.page-header {
    padding: 0.85rem 1.25rem;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    width: 72px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.15);
    flex-shrink: 0;
}

.header-text h1 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-magenta) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.header-tagline {
    margin: 0.15rem 0 0;
    font-size: 0.875rem;
    color: var(--color-muted);
    font-weight: 500;
}

/* App shell */
.app-shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 1.25rem 1rem 3rem;
}

/* Year tabs */
.year-tabs-wrap {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.year-tab-arrow {
    flex: 0 0 auto;
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-surface);
    color: var(--color-primary);
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background 0.2s ease, transform 0.15s ease, opacity 0.2s ease;
}

.year-tabs-wrap.has-overflow .year-tab-arrow {
    display: flex;
}

.year-tab-arrow:hover,
.year-tab-arrow:focus-visible {
    background: #ede9fe;
    outline: none;
}

.year-tab-arrow:active {
    transform: scale(0.92);
}

.year-tab-arrow:disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

.year-tabs {
    display: flex;
    gap: 0.4rem;
    padding: 0.5rem;
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: calc(var(--radius) + 4px);
    box-shadow: var(--shadow-sm);
    scrollbar-width: thin;
    scroll-behavior: smooth;
    flex: 1;
    min-width: 0;
}

.year-tab {
    flex: 0 0 auto;
    min-width: 3.25rem;
    padding: 0.55rem 0.9rem;
    border: 2px solid transparent;
    border-radius: 999px;
    background: #f5f3ff;
    color: var(--color-muted);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.year-tab:hover,
.year-tab:focus-visible {
    color: var(--color-primary);
    background: #ede9fe;
    outline: none;
}

.year-tab.is-active {
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-magenta) 100%);
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
    transform: translateY(-1px);
}

.page-main {
    min-height: 320px;
}

.year-content {
    transition: opacity 0.2s ease;
}

.year-content.is-loading {
    opacity: 0.45;
    pointer-events: none;
}

/* Year hero — event name & attendees highlight */
.year-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: calc(var(--radius) + 4px);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.year-hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    padding: 1.5rem 1.75rem;
    background: linear-gradient(120deg, #7c3aed 0%, #a855f7 35%, #ec4899 100%);
    color: #fff;
}

.year-hero-top {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    min-width: 220px;
}

.year-hero-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 4.5rem;
    padding: 0.5rem 0.85rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(4px);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid rgba(255, 255, 255, 0.35);
}

.year-hero-theme {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.25;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.year-hero-highlight {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius);
    background: linear-gradient(145deg, var(--color-accent-bright) 0%, var(--color-accent) 100%);
    color: #78350f;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    text-align: center;
}

.year-stat-number {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
}

.year-stat-label {
    margin-top: 0.25rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    opacity: 0.9;
}

.year-meta {
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, #faf8ff 0%, #fff 100%);
}

.year-venue,
.year-mc,
.year-team {
    margin: 0.4rem 0;
    color: var(--color-muted);
    font-size: 0.95rem;
    font-weight: 500;
}

.meta-icon {
    margin-right: 0.35rem;
}

.year-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.85rem;
}

.year-link {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: #f5f3ff;
    border: 1px solid #ddd6fe;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s;
}

.year-link:hover,
.year-link:focus-visible {
    background: #ede9fe;
    transform: translateY(-1px);
}

.year-programs {
    padding: 1.5rem 1.75rem 1.75rem;
}

.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

.program-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.program-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.program-title {
    margin: 0;
    padding: 1rem 1rem 0.5rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    line-height: 1.35;
    color: var(--color-primary);
}

.program-image-link {
    display: block;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #f5f3ff;
}

.program-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.program-image-link:hover .program-image {
    transform: scale(1.04);
}

.program-body {
    padding: 0 1rem 1rem;
    flex: 1;
}

.program-description,
.program-meta {
    margin: 0.5rem 0;
    font-size: 0.925rem;
    color: var(--color-muted);
}

.program-videos {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.video-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-primary) 100%);
    color: #fff !important;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.video-btn:hover,
.video-btn:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.35);
}

.video-btn-icon {
    font-size: 0.75rem;
}

.program-error {
    padding: 2rem;
    text-align: center;
    color: #dc2626;
    font-weight: 500;
}

/* Legacy content */
.legacy-content .rowcontainer {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

.legacy-content .intro,
.legacy-content .intro2,
.legacy-content .intro3 {
    float: none !important;
    width: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.legacy-content .intro:hover,
.legacy-content .intro2:hover,
.legacy-content .intro3:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.legacy-content .intro h2,
.legacy-content .intro2 h2,
.legacy-content .intro3 h2 {
    margin: 0;
    padding: 1rem 1rem 0.5rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--color-primary);
}

.legacy-content .update {
    padding: 0 1rem 1rem !important;
    margin: 0 !important;
    font-size: 0.925rem;
    color: var(--color-muted);
}

.legacy-content .img {
    display: block;
    width: 100% !important;
    max-width: none !important;
    height: auto;
    border-bottom: 1px solid var(--color-border);
}

.legacy-content .filler225,
.legacy-content .filler150,
.legacy-content [style*="clear:both"] {
    display: none !important;
}

.legacy-content #videos a,
.legacy-content .update > a[href*="youtu"],
.legacy-content .update > a[href*="youtube"] {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 0.5rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-primary) 100%);
    color: #fff !important;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
}

.legacy-content #videos img,
.legacy-content .update > a img[src*="play"] {
    display: none;
}

.page-footer {
    text-align: center;
    padding: 1.5rem 1rem;
    color: var(--color-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.6);
}

@media (max-width: 640px) {
    .header-inner {
        gap: 0.75rem;
    }

    .header-logo {
        width: 56px;
    }

    .header-text h1 {
        font-size: 1.25rem;
    }

    .year-hero {
        flex-direction: column;
        align-items: stretch;
        padding: 1.25rem;
    }

    .year-hero-top {
        flex-direction: column;
        align-items: flex-start;
    }

    .year-hero-highlight {
        width: 100%;
    }

    .year-meta,
    .year-programs {
        padding-inline: 1.25rem;
    }
}