:root {
    --hub-bg: #f6f8fb;
    --hub-card: #ffffff;
    --hub-line: #dbe3ef;
    --hub-text: #0f172a;
    --hub-muted: #64748b;
    --hub-accent: #f97316;
}

.sport-hub-page {
    background: radial-gradient(1100px 500px at 70% -20%, #e2e8f0 0%, #f6f8fb 65%, #f8fafc 100%);
    min-height: 100vh;
    color: var(--hub-text);
    padding: 2rem 0 3rem;
}

.sport-hub-shell {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 1rem;
}

.sport-hub-header {
    border: 1px solid #d8e1ef;
    border-radius: 16px;
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    padding: 1.2rem;
    margin-bottom: 1rem;
}

.sport-hub-header h1 {
    margin: 0;
    font-size: clamp(1.4rem, 2.8vw, 2.1rem);
    color: #0f172a;
}

.sport-hub-sub {
    margin-top: 0.5rem;
    color: #475569;
    line-height: 1.45;
}

.hub-group-strip {
    margin-bottom: 1rem;
    border: 1px solid #d8e1ef;
    border-radius: 12px;
    background: #ffffff;
    padding: 0.75rem;
}

.hub-group-link {
    display: inline-block;
    text-decoration: none;
    border: 1px solid #cfd8e8;
    border-radius: 10px;
    background: #f8fafc;
    color: #334155;
    padding: 0.35rem 0.7rem;
    font-size: 0.84rem;
    font-weight: 700;
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.hub-group-link:hover {
    border-color: #f97316;
    background: #fff7ed;
}

.hub-group-link.active {
    border-color: #f97316;
    background: #fff1e6;
    color: #9a3412;
}

.hub-notice {
    margin-bottom: 1rem;
    border: 1px solid #fcd34d;
    border-radius: 10px;
    background: #fffbeb;
    color: #92400e;
    padding: 0.55rem 0.75rem;
    font-size: 0.88rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.8rem;
}

.category-button {
    display: block;
    text-decoration: none;
    border: 1px solid var(--hub-line);
    border-radius: 12px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    padding: 0.85rem 0.9rem;
    color: var(--hub-text);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.category-button:hover {
    transform: translateY(-2px);
    border-color: var(--hub-accent);
    box-shadow: 0 10px 22px rgba(2, 6, 23, 0.12);
}

.category-title {
    display: block;
    font-weight: 700;
    color: #0f172a;
}

.category-meta {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.78rem;
    color: var(--hub-muted);
}

.hub-legal-strip {
    margin-top: 1rem;
    border: 1px solid #d1dae8;
    border-radius: 12px;
    background: #ffffff;
    padding: 0.85rem 1rem;
    color: #475569;
    font-size: 0.9rem;
    text-align: center;
}

html[data-theme="dark"] .sport-hub-page {
    background: radial-gradient(1100px 500px at 70% -20%, #243b57 0%, #0f172a 55%, #0b1220 100%);
    color: #e2e8f0;
}

html[data-theme="dark"] .sport-hub-header {
    border-color: #314156;
    background: linear-gradient(145deg, #1f2d44 0%, #152238 100%);
}

html[data-theme="dark"] .sport-hub-header h1 {
    color: #f8fafc;
}

html[data-theme="dark"] .sport-hub-sub {
    color: #cbd5e1;
}

html[data-theme="dark"] .hub-group-strip {
    border-color: #334155;
    background: #0f172a;
}

html[data-theme="dark"] .hub-group-link {
    border-color: #475569;
    background: #1e293b;
    color: #cbd5e1;
}

html[data-theme="dark"] .hub-group-link:hover {
    border-color: #f97316;
    background: #2a3a53;
}

html[data-theme="dark"] .hub-group-link.active {
    border-color: #f97316;
    background: rgba(249, 115, 22, 0.2);
    color: #ffedd5;
}

html[data-theme="dark"] .hub-notice {
    border-color: rgba(252, 211, 77, 0.35);
    background: rgba(251, 191, 36, 0.12);
    color: #fde68a;
}

html[data-theme="dark"] .category-button {
    border-color: #334155;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
    color: #e2e8f0;
}

html[data-theme="dark"] .category-button:hover {
    box-shadow: 0 10px 22px rgba(2, 6, 23, 0.3);
}

html[data-theme="dark"] .category-title {
    color: #f8fafc;
}

html[data-theme="dark"] .category-meta {
    color: #94a3b8;
}

html[data-theme="dark"] .hub-legal-strip {
    border-color: #334155;
    background: rgba(255, 255, 255, 0.06);
    color: #cbd5e1;
}