/* ============================================
   Nyce Music - Component Styles
   ============================================ */

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0);
    transition: background var(--transition-fast);
}
.btn:hover::after { background: rgba(255,255,255,0.1); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn:disabled::after { display: none; }

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-glow);
}
.btn-primary:hover { box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 78, 17, 0.4); }

.btn-secondary {
    background: var(--bg-glass-strong);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    backdrop-filter: blur(10px);
}
.btn-secondary:hover { border-color: var(--border-hover); background: var(--bg-glass-hover); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-surface-hover); }

.btn-danger {
    background: linear-gradient(135deg, #EF4444, #DC2626);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
}

.btn-sm { padding: 0.375rem 1rem; font-size: var(--text-xs); }
.btn-lg { padding: 0.875rem 2rem; font-size: var(--text-base); }
.btn-xl { padding: 1rem 2.5rem; font-size: var(--text-lg); border-radius: var(--radius-xl); }
.btn-icon { padding: 0.625rem; width: 40px; height: 40px; border-radius: var(--radius-full); }
.btn-icon.btn-sm { width: 32px; height: 32px; padding: 0.375rem; }
.btn-icon.btn-lg { width: 48px; height: 48px; padding: 0.75rem; }

.btn-loading .btn-text { opacity: 0; }
.btn-loading::before {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ── Input Fields ── */
.form-group { margin-bottom: var(--space-5); position: relative; }

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:hover { border-color: var(--border-hover); }
.form-input:focus { border-color: var(--primary-500); box-shadow: 0 0 0 3px rgba(255, 78, 17, 0.15); background: var(--bg-glass-hover); }
.form-input.error { border-color: var(--error-500); }
.form-input.success { border-color: var(--success-500); }

.form-input-icon {
    position: relative;
}
.form-input-icon .form-input { padding-left: 2.75rem; }
.form-input-icon .input-icon {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    width: 18px; height: 18px;
    pointer-events: none;
    /* .form-input's backdrop-filter creates its own stacking context, which
       — since it comes after this icon in the DOM at the same implicit
       stacking level — paints over it instead of under it, hiding the
       icon behind the input's own blurred glass surface. */
    z-index: 1;
}

.form-hint { font-size: var(--text-xs); color: var(--text-tertiary); margin-top: var(--space-1); }
.form-error { font-size: var(--text-xs); color: var(--error-500); margin-top: var(--space-1); }

.form-select {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    transition: all var(--transition-base);
}
.form-select:focus { border-color: var(--primary-500); box-shadow: 0 0 0 3px rgba(255, 78, 17, 0.15); }

.form-checkbox, .form-radio {
    display: flex; align-items: center; gap: var(--space-2); cursor: pointer; font-size: var(--text-sm);
}
.form-checkbox input, .form-radio input { display: none; }
.form-checkbox .checkmark, .form-radio .checkmark {
    width: 18px; height: 18px;
    border: 2px solid var(--border-default);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}
.form-radio .checkmark { border-radius: 50%; }
.form-checkbox input:checked + .checkmark, .form-radio input:checked + .checkmark {
    background: var(--primary-600);
    border-color: var(--primary-600);
}
.form-checkbox input:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: 700;
}
.form-radio input:checked + .checkmark::after {
    content: '';
    width: 8px; height: 8px;
    background: white;
    border-radius: 50%;
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}
.card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-card-hover); }
.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.music-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
}
.music-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-card-hover); }
.music-card .card-image {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}
.music-card .card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.music-card:hover .card-image img { transform: scale(1.05); }
.music-card .play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.music-card:hover .play-overlay { opacity: 1; }
.music-card .play-btn-card {
    width: 48px; height: 48px;
    background: var(--primary-500);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-lg);
    transform: translateY(8px);
    transition: transform var(--transition-base);
}
.music-card:hover .play-btn-card { transform: translateY(0); }
.music-card .card-body { padding: var(--space-4); }
.music-card .card-title { font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-1); }
.music-card .card-subtitle { font-size: var(--text-xs); color: var(--text-tertiary); }

/* ── Badges ── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 10px; font-size: var(--text-xs); font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}
.badge-primary { background: rgba(255, 78, 17, 0.15); color: var(--primary-400); }
.badge-success { background: rgba(16,185,129,0.15); color: var(--success-500); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning-500); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--error-500); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--info-500); }

/* ── Alerts/Toast ── */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    display: flex; align-items: flex-start; gap: var(--space-3);
    font-size: var(--text-sm);
    border: 1px solid transparent;
    animation: fadeInDown 0.3s ease;
}
.alert-success { background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.2); color: var(--success-500); }
.alert-error { background: rgba(239,68,68,0.1); border-color: rgba(239,68,68,0.2); color: var(--error-500); }
.alert-warning { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.2); color: var(--warning-500); }
.alert-info { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.2); color: var(--info-500); }
.alert .close-alert { margin-left: auto; cursor: pointer; opacity: 0.6; background: none; border: none; color: inherit; }
.alert .close-alert:hover { opacity: 1; }

/* ── Toast Notifications ── */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.toast {
    padding: var(--space-4) var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(20px);
    display: flex; align-items: center; gap: var(--space-3);
    min-width: 320px;
    animation: slideInRight 0.3s ease;
    font-size: var(--text-sm);
}
.toast.toast-exit { animation: slideInRight 0.3s ease reverse forwards; }

/* ── Avatar ── */
.avatar {
    width: 40px; height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-default);
}
.avatar-sm { width: 32px; height: 32px; }
.avatar-lg { width: 56px; height: 56px; }
.avatar-xl { width: 80px; height: 80px; }
.avatar-placeholder {
    display: flex; align-items: center; justify-content: center;
    background: var(--gradient-primary);
    color: white; font-weight: 700;
}

/* ── Modal ── */
.modal-overlay {
    position: fixed; inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(8px);
    z-index: var(--z-modal);
    display: none; align-items: center; justify-content: center;
    padding: var(--space-6);
    animation: fadeIn 0.2s ease;
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto;
    animation: scaleIn 0.3s ease;
}
.modal-header {
    padding: var(--space-6) var(--space-6) var(--space-4);
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--border-default);
}
.modal-header h3 { font-size: var(--text-xl); }
.modal-body { padding: var(--space-6); }
.modal-footer {
    padding: var(--space-4) var(--space-6) var(--space-6);
    display: flex; gap: var(--space-3); justify-content: flex-end;
}

/* ── Table ── */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-default);
}
.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table th {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--text-tertiary);
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-default);
}
.data-table td {
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-sm);
    border-bottom: 1px solid var(--border-default);
    color: var(--text-secondary);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-surface-hover); }

/* ── Tabs ── */
.tabs {
    display: flex; gap: var(--space-1);
    border-bottom: 1px solid var(--border-default);
    margin-bottom: var(--space-6);
}
.tab-btn {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm); font-weight: 500;
    color: var(--text-tertiary);
    border-bottom: 2px solid transparent;
    cursor: pointer; transition: all var(--transition-base);
    background: none;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--primary-400);
    border-bottom-color: var(--primary-500);
}

/* ── Stat Card ── */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition-base);
}
.stat-card:hover { box-shadow: var(--shadow-card-hover); }
.stat-card .stat-icon {
    width: 44px; height: 44px;
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: var(--space-4);
}
.stat-card .stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    font-family: var(--font-display);
    margin-bottom: var(--space-1);
}
.stat-card .stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}
.stat-card .stat-change {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: var(--text-xs); font-weight: 600;
    margin-top: var(--space-2);
}
.stat-change.positive { color: var(--success-500); }
.stat-change.negative { color: var(--error-500); }

/* ── Progress Bar ── */
.progress-bar {
    width: 100%; height: 6px;
    background: var(--bg-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.progress-bar .progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* ── Search Bar ── */
.search-bar {
    position: relative;
    max-width: 400px;
    width: 100%;
}
.search-bar input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    transition: all var(--transition-base);
}
.search-bar input:focus { border-color: var(--primary-500); background: var(--bg-glass-hover); box-shadow: 0 0 0 3px rgba(255, 78, 17, 0.1); }
.search-bar .search-icon {
    position: absolute; left: 0.875rem; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* ── Dropdown ── */
.dropdown { position: relative; }
.dropdown-menu {
    position: absolute; top: calc(100% + 8px); right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-2);
    min-width: 200px;
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    display: none;
    animation: fadeInDown 0.2s ease;
}
.dropdown-menu.active { display: block; }
.dropdown-item {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer; width: 100%;
}
.dropdown-item:hover { background: var(--bg-surface-hover); color: var(--text-primary); }
.dropdown-divider { height: 1px; background: var(--border-default); margin: var(--space-2) 0; }

/* ── Waveform Visualizer ── */
.waveform {
    display: flex; align-items: flex-end; gap: 2px; height: 24px;
}
.waveform .bar {
    width: 3px;
    background: var(--primary-500);
    border-radius: 2px;
    animation: waveform 1.2s ease-in-out infinite;
}
.waveform .bar:nth-child(1) { animation-delay: 0s; }
.waveform .bar:nth-child(2) { animation-delay: 0.15s; }
.waveform .bar:nth-child(3) { animation-delay: 0.3s; }
.waveform .bar:nth-child(4) { animation-delay: 0.45s; }
.waveform .bar:nth-child(5) { animation-delay: 0.6s; }

/* ── Empty State ── */
.empty-state {
    text-align: center; padding: var(--space-16) var(--space-6);
}
.empty-state .empty-icon { font-size: 4rem; margin-bottom: var(--space-4); opacity: 0.3; }
.empty-state h3 { font-size: var(--text-xl); margin-bottom: var(--space-2); }
.empty-state p { color: var(--text-tertiary); max-width: 360px; margin: 0 auto var(--space-6); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .card { padding: var(--space-4); }
    .stat-card { padding: var(--space-4); }
    .btn-lg { padding: 0.75rem 1.5rem; font-size: var(--text-sm); }
    .empty-state { padding: var(--space-8) var(--space-4); }
    .empty-state .empty-icon { font-size: 3rem; }
}