/* ============================================================
   Panneau d'administration OST – Styles (Thème Demon Slayer)
   ============================================================ */

:root {
    --bg: #111;
    --surface: #1a1a1e;
    --surface-light: #242428;
    --accent: #a11414;
    --accent-hover: #c82828;
    --accent-glow: rgba(161, 20, 20, 0.4);
    --text: #e8e4e0;
    --text-dim: #8c827d;
    --border: rgba(161, 20, 20, 0.45);
    --danger: #b41e1e;
    --danger-hover: #dc3232;
    --radius: 10px;
}

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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ---------- En-tête ---------- */

header {
    background: linear-gradient(135deg, #0f0f12, #1a0808);
    border-bottom: 2px solid var(--accent);
    text-align: center;
    padding: 2rem 1rem;
    transition: all 0.3s ease;
}

header h1 {
    font-size: 2rem;
    color: #fff;
    letter-spacing: 1px;
}

header p {
    color: var(--text-dim);
    margin-top: 0.25rem;
}

/* ---------- Contenu principal ---------- */

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ---------- Cartes ---------- */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 15px var(--accent-glow);
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #fff;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
    transition: all 0.3s ease;
}

/* ---------- Tableau des pistes ---------- */

.track-table {
    width: 100%;
    border-collapse: collapse;
}

.track-table th,
.track-table td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--surface-light);
    transition: all 0.3s ease;
}

.track-table th {
    color: var(--text-dim);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
}

.track-table tr {
    transition: all 0.3s ease;
}

.track-table tbody tr:hover {
    background: var(--surface-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.track-table .url-cell {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.85rem;
    color: var(--text-dim);
}

.badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--accent);
    color: #fff;
    transition: all 0.3s ease;
}

.badge.youtube {
    background: #c00;
}

.badge.mp3 {
    background: #1a8a4a;
}

.empty-msg {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-dim);
}

.loading {
    text-align: center;
    color: var(--text-dim);
    padding: 1rem;
}

/* ---------- Formulaires ---------- */

.form-group {
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    color: var(--text-dim);
    transition: all 0.3s ease;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: none;
    border-bottom: 2px solid var(--surface-light);
    border-radius: 6px;
    background: var(--surface-light);
    color: var(--text);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="url"]:focus,
.form-group select:focus {
    border-bottom-color: var(--accent);
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* ---------- Boutons ---------- */

.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    background: #5a1010;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.7;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    padding: 0.35rem 0.8rem;
    font-size: 0.8rem;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

/* ---------- Indicateur de chargement ---------- */

.spinner-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem;
    margin-top: 0.75rem;
    background: rgba(17, 17, 17, 0.85);
    border: 1px solid var(--border);
    border-radius: 6px;
    animation: fadeIn 0.3s ease;
}

.spinner {
    width: 22px;
    height: 22px;
    border: 3px solid var(--surface-light);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-text {
    color: var(--text-dim);
    font-size: 0.9rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Pied de page ---------- */

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-dim);
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

/* ---------- Responsive ---------- */

@media (max-width: 600px) {
    header h1 {
        font-size: 1.5rem;
    }

    .track-table th:nth-child(4),
    .track-table td:nth-child(4) {
        display: none;
    }
}