/* Buttons — complemento ao Bootstrap */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-outline-primary.btn-loading::after,
.btn-outline-secondary.btn-loading::after,
.btn-ghost.btn-loading::after {
    border-color: rgba(30, 64, 175, 0.2);
    border-top-color: var(--bs-primary);
}

.btn-warning.btn-loading::after {
    border-color: rgba(15, 23, 42, 0.15);
    border-top-color: #0F172A;
}

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

/* Forms — complemento */
.form-group {    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
}

.form-input.error {
    border-color: var(--color-error);
}

.form-error {
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: 0.35rem;
}

.form-hint {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    margin-top: 0.35rem;
}

/* Navbar — Bootstrap em theme.css + navbar.php */

/* Toast */.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 280px;
    animation: slideIn 0.3s ease;
    border-left: 4px solid var(--color-primary);
}

.toast-success { border-left-color: var(--color-success); }
.toast-error { border-left-color: var(--color-error); }
.toast-warning { border-left-color: var(--color-accent); }
.toast-info { border-left-color: var(--color-accent); }

.toast i {
    font-size: 1.25rem;
}

.toast-success i { color: var(--color-success); }
.toast-error i { color: var(--color-error); }
.toast-warning i { color: var(--color-accent); }
.toast-info i { color: var(--color-primary); }

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-border) 25%, #f1f5f9 50%, var(--color-border) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Alert */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-error {
    background: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.alert-success {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-info {
    background: #EFF6FF;
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

/* Player */
.main-content.has-player { padding-bottom: 80px; }
.mini-player {
    position: fixed; bottom: 0; left: 0; right: 0; height: 72px;
    background: white; border-top: 1px solid var(--color-border);
    display: flex; align-items: center; gap: 1rem; padding: 0 1rem;
    z-index: 200; box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
}
.mini-player-cover {
    width: 48px; height: 48px; border-radius: var(--radius-sm);
    background: var(--color-primary); color: white;
    display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0;
}
.mini-player-cover img { width: 100%; height: 100%; object-fit: cover; }
.mini-player-info { flex: 1; min-width: 0; }
.mini-player-info strong, .mini-player-info small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-player-info small { color: var(--color-text-muted); }
.mini-player-controls { display: flex; gap: 0.25rem; }
.player-progress {
    height: 4px; background: var(--color-border); border-radius: 2px;
    margin-top: 0.35rem; cursor: pointer; overflow: hidden;
}
.player-progress.lg { height: 6px; margin: 1rem 0; }
.player-progress div, #player-progress-fill, #player-progress-fill-full {
    height: 100%; background: var(--color-primary); width: 0; transition: width 0.1s;
}
.full-player {
    position: fixed; inset: 0; background: linear-gradient(180deg, var(--color-primary-dark), var(--color-primary));
    z-index: 300; flex-direction: column; align-items: center; justify-content: center; color: white;
}
.full-player-content { text-align: center; padding: 2rem; max-width: 400px; width: 100%; }
.full-cover {
    width: 200px; height: 200px; border-radius: var(--radius-lg); background: rgba(255,255,255,0.15);
    margin: 0 auto 1.5rem; display: flex; align-items: center; justify-content: center; font-size: 4rem;
}
.btn-ghost.active { color: var(--color-error); }
#player-shuffle.active, #player-repeat.active,
#full-shuffle.active, #full-repeat.active { color: var(--color-accent); }

.chart-wrap { position: relative; height: 220px; }
@media (max-width: 768px) {
    .admin-content div[style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }
}

/* Catálogo / Home */
.home-section { margin-bottom: 2rem; }
.home-section h2 { font-size: 1.25rem; margin-bottom: 1rem; }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; }
.cat-card {
    background: white; border-radius: var(--radius-lg); padding: 1.25rem; text-align: center;
    box-shadow: var(--shadow-md); cursor: pointer; transition: transform 0.2s; text-decoration: none; color: inherit;
}
.cat-card:hover { transform: translateY(-3px); }
.cat-card i { font-size: 2rem; color: var(--color-primary); display: block; margin-bottom: 0.5rem; }
.song-row {
    display: flex; align-items: center; gap: 1rem; padding: 0.75rem; background: white;
    border-radius: var(--radius-md); margin-bottom: 0.5rem; box-shadow: var(--shadow-sm);
}
.song-row .info { flex: 1; min-width: 0; }
.song-row .info strong { display: block; }
.song-row .info small { color: var(--color-text-muted); }
.song-cover-sm {
    width: 48px; height: 48px; border-radius: var(--radius-sm); background: var(--color-primary);
    display: flex; align-items: center; justify-content: center; color: white; flex-shrink: 0; overflow: hidden;
}
.song-cover-sm img { width: 100%; height: 100%; object-fit: cover; }