/**
 * Global UI Components (Buttons, Cards, Badges, Modals, Tabs, Accordion)
 */

/* ==========================================================================
   1. BUTTON SYSTEM
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition: all var(--duration-base) var(--ease-standard);
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Defensive 2-Tier Rules: Khong hien thi the rong khi quan tri vien xoa chu */
.badge:empty,
.pill:empty,
.tag:empty,
.card-artist:empty,
.card-meta-tags:empty,
.form-error-msg:empty,
.modal-body:empty {
    display: none !important;
}

/* Kích thước Button & Touch Target */
.btn--sm {
    min-height: 38px;
    height: 38px;
    padding: 0 var(--space-4);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.btn--md {
    min-height: 44px;
    height: 44px;
    padding: 0 var(--space-5);
    font-size: var(--font-size-sm);
}

.btn--lg {
    min-height: 52px;
    height: 52px;
    padding: 0 var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 700;
    border-radius: var(--radius-lg);
}

.btn--icon {
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
    padding: 0;
}
.btn--icon.btn--sm { min-width: 38px; min-height: 38px; width: 38px; height: 38px; }
.btn--icon.btn--lg { min-width: 52px; min-height: 52px; width: 52px; height: 52px; }

/* Biến thể Button */
.btn--primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}
.btn--primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}
.btn--primary:active {
    transform: translateY(0);
}

.btn--secondary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-bg);
}
.btn--secondary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
}

.btn--success,
.btn--download {
    background-color: rgba(16, 185, 129, 0.15) !important;
    border: 1px solid rgba(16, 185, 129, 0.35) !important;
    color: #34d399 !important;
}
.btn--success:hover,
.btn--download:hover {
    background-color: var(--color-success) !important;
    border-color: var(--color-success) !important;
    color: #ffffff !important;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.4);
    transform: translateY(-1px);
}

.btn--ghost {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}
.btn--ghost:hover {
    background-color: var(--color-surface);
    border-color: var(--color-border-hover);
    color: #ffffff;
}

.btn--dark {
    background-color: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}
.btn--dark:hover {
    background-color: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    color: #ffffff;
}

/* ==========================================================================
   2. CARD SYSTEM
   ========================================================================== */
.card {
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--duration-base) var(--ease-standard);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.card:hover {
    border-color: var(--color-border-hover);
    background-color: var(--color-surface-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card--tab {
    padding: var(--space-5);
    gap: var(--space-3);
}

.card--feature {
    padding: var(--space-6);
    gap: var(--space-3);
}

.card--stat {
    padding: var(--space-5);
    text-align: center;
    align-items: center;
}

/* ==========================================================================
   3. BADGES & PILLS
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    font-weight: 700;
    line-height: 1;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-xs);
    text-transform: uppercase;
}

.badge--primary {
    background: var(--color-primary-subtle);
    border: var(--border-width) solid var(--color-primary-border);
    color: var(--color-primary);
}

.badge--secondary {
    background: var(--color-secondary-subtle);
    border: var(--border-width) solid rgba(56, 189, 248, 0.3);
    color: var(--color-secondary);
}

.badge--pill {
    border-radius: var(--radius-pill);
    padding: 0.35em 0.85em;
}

/* ==========================================================================
   4. MODAL COMPONENT
   ========================================================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--gutter);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-base) var(--ease-standard);
}

.modal.is-open {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(11, 13, 19, 0.85);
    backdrop-filter: blur(8px);
}

.modal-dialog {
    position: relative;
    z-index: 1;
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border-hover);
    border-radius: var(--radius-xl);
    width: min(100%, 640px);
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    padding: var(--space-6);
}

/* ==========================================================================
   5. TABS & ACCORDIONS
   ========================================================================== */
.tabs-nav {
    display: flex;
    gap: var(--space-2);
    border-bottom: var(--border-width) solid var(--color-border);
    margin-bottom: var(--space-5);
}

.tabs-btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    transition: all var(--duration-fast) ease;
}

.tabs-btn.is-active,
.tabs-btn:hover {
    color: #ffffff;
    border-bottom-color: var(--color-primary);
}

.accordion-item {
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
    overflow: hidden;
    background: var(--color-surface);
}

.accordion-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-md);
    font-weight: 600;
    text-align: left;
    color: #ffffff;
}

.accordion-panel {
    display: none;
    padding: 0 var(--space-5) var(--space-5);
    color: var(--color-text-muted);
}

.accordion-item.is-open .accordion-panel {
    display: block;
}

/* ==========================================================================
   6. ULTIMATE-GUITAR EXPLORE ARCHITECTURE (Table, Filters, View Switcher)
   ========================================================================== */

/* Explore Filter Bar & Pills */
.explore-filter-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    margin-bottom: var(--space-5);
}

.filter-pills-scroll {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
}
.filter-pills-scroll::-webkit-scrollbar {
    height: 4px;
}
.filter-pills-scroll::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--duration-fast) ease;
    cursor: pointer;
}
.filter-pill:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}
.filter-pill.is-active {
    color: #ffffff;
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(184, 106, 52, 0.35);
}

/* Secondary Filter Row */
.filter-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
}

.filter-select-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* Active Chips */
.active-chips-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
}
.active-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(184, 106, 52, 0.15);
    border: 1px solid rgba(184, 106, 52, 0.35);
    color: #e29758;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.active-chip:hover {
    background: rgba(184, 106, 52, 0.25);
    color: #ffffff;
}

/* View Switcher */
.view-switcher {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2px;
}
.view-switch-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
}
.view-switch-btn:hover {
    color: #ffffff;
}
.view-switch-btn.is-active {
    background: var(--color-surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* UG Explore Table */
.ug-table-wrapper {
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-5);
}
.ug-explore-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.ug-explore-table th {
    background: rgba(0, 0, 0, 0.25);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}
.ug-explore-table td {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    vertical-align: middle;
}
.ug-table-row {
    transition: background var(--duration-fast) ease, border-left var(--duration-fast) ease;
    border-left: 3px solid transparent;
}
.ug-table-row:hover {
    background: rgba(255, 255, 255, 0.04);
    border-left-color: var(--color-primary);
}
.ug-song-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ug-song-title {
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    transition: color var(--duration-fast) ease;
}
.ug-song-title:hover {
    color: var(--color-primary);
}
.ug-artist-link {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.ug-artist-link:hover {
    color: #ffffff;
}

/* Badges for formats */
.badge--gp5 { background: rgba(184, 106, 52, 0.18); color: #e29758; border: 1px solid rgba(184, 106, 52, 0.35); }
.badge--gp4 { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.35); }
.badge--gp3 { background: rgba(168, 85, 247, 0.15); color: #c084fc; border: 1px solid rgba(168, 85, 247, 0.35); }
.badge--gpx { background: rgba(34, 197, 94, 0.15); color: #4ade80; border: 1px solid rgba(34, 197, 94, 0.35); }
.badge--gp  { background: rgba(234, 179, 8, 0.15); color: #facc15; border: 1px solid rgba(234, 179, 8, 0.35); }

/* Responsive adjustments */
@media (max-width: 768px) {
    .ug-col-hide-mobile {
        display: none !important;
    }
    .ug-explore-table td, .ug-explore-table th {
        padding: var(--space-3) var(--space-3);
    }
    .filter-controls-row {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-select-group {
        width: 100%;
        justify-content: space-between;
    }
}

/* ==========================================================================
   7. LIVE AJAX SEARCH DROPDOWN (Header & Global Autocomplete)
   ========================================================================== */

.header-search-wrapper {
    position: relative;
}

.gp-search-results-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
    max-height: 420px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    backdrop-filter: blur(12px);
    scrollbar-width: thin;
}

.gp-search-results-dropdown.is-open {
    display: block;
    animation: fadeIn var(--duration-fast) ease;
}

.gp-search-loading,
.gp-search-no-results,
.gp-search-error {
    padding: var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

.gp-search-results-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.gp-search-result-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background var(--duration-fast) ease;
}

.gp-search-result-item:last-child {
    border-bottom: none;
}

.gp-search-result-item a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    text-decoration: none;
    gap: var(--space-3);
}

.gp-search-result-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.gp-search-item-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.gp-search-song-title {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gp-search-artist-badge {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.gp-search-item-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.gp-badge-format {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: rgba(184, 106, 52, 0.15);
    color: var(--color-primary-light);
    border: 1px solid rgba(184, 106, 52, 0.35);
}

.gp-badge-tracks {
    font-size: 11px;
    color: var(--color-text-muted);
}

/* ==========================================================================
   10. DUAL VIEW SWITCHER: TABS & CHORDS (Mô hình 2 Tab chuẩn âm nhạc)
   ========================================================================== */
.gp-view-switcher {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    padding: 4px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    gap: 4px;
}

.gp-view-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: 600;
    font-family: var(--font-primary);
    border: none;
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-standard);
    user-select: none;
}

.gp-view-tab-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.gp-view-tab-btn.is-active {
    background: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(184, 106, 52, 0.35);
}

/* ==========================================================================
   CONSOLIDATED SONG META & VIEW SWITCHER BAR
   ========================================================================== */
.gp-song-meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 6px 0;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.gp-meta-bar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gp-song-meta-bar .gp-view-switcher {
    display: inline-flex;
    align-items: center;
    background: transparent;
    border: none;
    padding: 0;
    gap: 6px;
}

.gp-song-meta-bar .gp-view-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted, #94a3b8);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.gp-song-meta-bar .gp-view-tab-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.gp-song-meta-bar .gp-view-tab-btn.is-active {
    background: #f59e0b;
    color: #0f172a;
    font-weight: 700;
    box-shadow: none;
}

.gp-song-meta-bar .gp-view-tab-btn.is-active svg {
    color: #0f172a;
    fill: currentColor;
}

/* Specs Dạng Inline Chữ Tinh Tế (Không Viền - Không Ô Lồng Ô) */
.gp-song-specs-inline {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted, #94a3b8);
}

.gp-spec-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-muted, #94a3b8);
    letter-spacing: 0.02em;
}

.gp-spec-label {
    font-size: 11px;
    font-weight: 600;
    color: #64748b;
    letter-spacing: 0.03em;
}

.gp-spec-val {
    color: #f1f5f9;
    font-weight: 700;
}

.gp-spec-dot {
    color: #475569;
    font-size: 11px;
    user-select: none;
}

.gp-spec-highlight .gp-spec-val,
.gp-spec-highlight .gp-spec-label {
    color: #38bdf8;
}

.gp-view-pane {
    display: none;
    animation: fadeInTab 0.25s ease-out;
}

.gp-view-pane.is-active {
    display: block;
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   11. CHORDS TOOLBAR & SHEET (Trình hiển thị Hợp âm & Lời tương tác)
   ========================================================================== */
.gp-chords-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.gp-chords-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: 14px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.gp-toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.gp-toolbar-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
}

.gp-tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    color: var(--color-text-main);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    gap: 6px;
}

.gp-tool-btn:hover {
    background: rgba(184, 106, 52, 0.15);
    border-color: var(--color-primary);
    color: #ffffff;
}

.gp-tool-btn.is-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.gp-tone-badge {
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    background: rgba(184, 106, 52, 0.15);
    color: var(--color-primary-light);
    font-weight: 700;
    font-size: var(--font-size-sm);
    border: 1px solid rgba(184, 106, 52, 0.35);
}

.gp-chords-container {
    background: #141210;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.gp-chords-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 24px;
    background: #1a1714;
    border-bottom: 1px solid var(--color-border);
}

.gp-chords-list-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.gp-chord-chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    background: rgba(184, 106, 52, 0.14);
    border: 1px solid rgba(184, 106, 52, 0.35);
    color: var(--color-primary-light);
    font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gp-chord-chip:hover {
    background: var(--color-primary);
    color: #ffffff;
    transform: translateY(-1px);
}

.gp-chords-sheet {
    background: #141210;
    padding: 32px 36px;
    font-size: 18px;
    line-height: 1.6;
    overflow-x: auto;
    transition: font-size 0.15s ease;
}

/* Từng dòng bài hát trong Sheet */
.gp-chord-line {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-top: 12px;
    margin-bottom: 14px;
    line-height: 1;
    user-select: text;
}

/* Ô cặp (Cột dọc: Hợp âm đặt chính xác trên đầu Từ / Âm tiết chuẩn hopam.vn) */
.gp-chord-cell {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    vertical-align: bottom;
    margin: 0;
}

/* Nốt Hợp Âm phía trên */
.gp-chord {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b !important;
    background: transparent;
    border: none;
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.88em !important;
    font-weight: 800 !important;
    line-height: 1 !important;
    margin-bottom: 7px !important;
    padding: 2px 4px !important;
    border-radius: 4px;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
    touch-action: manipulation;
    white-space: nowrap;
}

.gp-chord:hover {
    color: #fbbf24 !important;
    text-decoration: underline;
    background: rgba(245, 158, 11, 0.15) !important;
    transform: scale(1.08);
}

.gp-chord:active {
    transform: scale(0.96);
}

/* Ô trống giữ chỗ khi đoạn ca từ đó không đổi hợp âm (đảm bảo thẳng hàng tuyệt đối) */
.gp-chord-placeholder {
    display: inline-block;
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.88em !important;
    line-height: 1 !important;
    margin-bottom: 7px !important;
    padding: 2px 4px !important;
    visibility: hidden;
    user-select: none;
    pointer-events: none;
}

/* Lời bài hát phía dưới */
.gp-lyric {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 1.05em;
    font-weight: 400;
    line-height: 1.5;
    color: #f8fafc;
    white-space: pre;
}

/* Phân đoạn bài hát (Intro, Verse, Chorus, Outro) */
.gp-chord-section-header {
    margin: 28px 0 14px 0;
    display: flex;
    align-items: center;
    user-select: none;
}

.gp-chord-section-header:first-child {
    margin-top: 0;
}

.gp-section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: all 0.15s ease;
}

.gp-section-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.gp-section-tag--chorus {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.35);
}

.gp-section-tag--chorus .gp-section-dot {
    background: #f59e0b;
}

.gp-section-tag--verse {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.gp-section-tag--verse .gp-section-dot {
    background: #10b981;
}

.gp-section-tag--intro {
    background: rgba(56, 189, 248, 0.12);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.gp-section-tag--intro .gp-section-dot {
    background: #38bdf8;
}

.gp-section-sub {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    opacity: 0.75;
    margin-left: 4px;
}

/* Dòng trống giữa các khổ thơ */
.gp-chord-empty-line {
    height: 24px;
    width: 100%;
}

.gp-chords-empty {
    padding: 48px 24px;
    text-align: center;
    background: var(--color-bg-card);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
}


/* ==========================================================================
   ALBUM & ARTIST CARDS, GRIDS & STATUS BADGES (STRICT GLOBAL DESIGN SYSTEM)
   ========================================================================== */

/* Music Capability Status Badges */
.gp-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 9999px;
    font-size: 11.5px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.2px;
    border: 1px solid transparent;
    user-select: none;
    white-space: nowrap;
}

.gp-status-badge .gp-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.gp-status-badge--both {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.35);
    color: #34d399;
}
.gp-status-badge--both .gp-badge-dot {
    background: #10b981;
    box-shadow: 0 0 6px #10b981;
}

.gp-status-badge--tab {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.35);
    color: #60a5fa;
}
.gp-status-badge--tab .gp-badge-dot {
    background: #3b82f6;
    box-shadow: 0 0 6px #3b82f6;
}

.gp-status-badge--chord {
    background: rgba(245, 158, 11, 0.12);
    border-color: rgba(245, 158, 11, 0.35);
    color: #fbbf24;
}
.gp-status-badge--chord .gp-badge-dot {
    background: #f59e0b;
    box-shadow: 0 0 6px #f59e0b;
}

.gp-status-badge--none {
    background: rgba(156, 163, 175, 0.1);
    border-color: rgba(156, 163, 175, 0.25);
    color: #9ca3af;
}
.gp-status-badge--none .gp-badge-dot {
    background: #6b7280;
}

/* Album Card Component (Compact Redesign with Artist Overlay) */
.album-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg, 12px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: var(--color-text);
    position: relative;
}

.album-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
}

.album-card__cover-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
    display: block;
}

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

.album-card:hover .album-card__cover {
    transform: scale(1.04);
}

.album-card__year-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    z-index: 3;
}

/* Artist Overlay: Gradient cùng màu album-card__body (#0e172e / var(--color-surface)) chuyển dần lên */
.album-card__artist-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 36px 10px 6px;
    background: linear-gradient(
        to top,
        #0e172e 0%,
        rgba(14, 23, 46, 0.92) 30%,
        rgba(14, 23, 46, 0.5) 65%,
        rgba(14, 23, 46, 0.15) 85%,
        transparent 100%
    );
    background: linear-gradient(
        to top,
        var(--color-surface, #0e172e) 0%,
        color-mix(in srgb, var(--color-surface, #0e172e) 94%, transparent) 30%,
        color-mix(in srgb, var(--color-surface, #0e172e) 55%, transparent) 65%,
        color-mix(in srgb, var(--color-surface, #0e172e) 15%, transparent) 85%,
        transparent 100%
    );
    z-index: 2;
    pointer-events: none;
}

.album-card__artist-name {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: #cbd5e1;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.9);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.album-card:hover .album-card__artist-name {
    color: #ffffff;
}

.album-card__body {
    padding: 8px 10px 10px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.album-card__title {
    font-size: 14px;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 4px 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.album-card__title a {
    color: inherit;
    text-decoration: none;
}

.album-card__meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-muted);
}

.album-card__tracks {
    font-size: 11px;
    color: var(--color-text-muted);
}

/* Artist Card Standardized Component (Compact text-center standard) */
.artist-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg, 12px);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: var(--color-text);
}

.artist-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.6);
}

.artist-card__avatar-wrap {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--color-primary-subtle, rgba(250, 45, 72, 0.08));
    border: 2px solid var(--color-primary-border, rgba(250, 45, 72, 0.3));
    margin-bottom: 10px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: border-color 0.2s ease;
}

.artist-card:hover .artist-card__avatar-wrap {
    border-color: var(--color-primary);
}

.artist-card__avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.artist-card__avatar-fallback,
.artist-card__initial {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-light, #ff6b81);
    display: flex;
    align-items: center;
    justify-content: center;
}

.artist-card__name {
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    margin: 0 0 4px 0;
    line-height: 1.3;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.artist-card__count,
.artist-card__stats {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Modern GP Pagination Component */
.gp-pagination {
    margin: var(--space-8, 32px) 0 var(--space-6, 24px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.gp-page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
}

.gp-page-numbers li {
    list-style: none;
    margin: 0;
    padding: 0;
}

.gp-page-numbers .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border-radius: var(--radius-md, 8px);
    background: var(--color-surface, #141724);
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
    color: var(--color-text, #e2e8f0);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.gp-page-numbers a.page-numbers:hover {
    background: rgba(250, 45, 72, 0.12);
    border-color: var(--color-primary, #fa2d48);
    color: #ffffff;
    transform: translateY(-1px);
}

.gp-page-numbers .page-numbers.current {
    background: var(--color-primary, #fa2d48);
    border-color: var(--color-primary, #fa2d48);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(250, 45, 72, 0.4);
    pointer-events: none;
}

.gp-page-numbers .page-numbers.dots {
    background: transparent;
    border: none;
    color: var(--color-text-muted, #94a3b8);
    min-width: 24px;
    padding: 0 4px;
    cursor: default;
    box-shadow: none;
}

.gp-page-numbers .prev.page-numbers,
.gp-page-numbers .next.page-numbers {
    padding: 0 14px;
    font-weight: 600;
    font-size: 13px;
}

/* Home Explore Layout & Sidebar */
.home-explore-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 24px;
    align-items: start;
}

.home-explore-main {
    min-width: 0;
}

.home-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.home-widget {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
}

.home-widget .widget-title {
    font-size: 15px;
    font-weight: 700;
    color: #ffffff;
}

.home-sidebar-playlists a {
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.home-sidebar-playlists a:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    border-color: rgba(255, 255, 255, 0.12) !important;
    transform: translateX(3px);
}

@media (max-width: 991px) {
    .home-explore-layout {
        grid-template-columns: 1fr;
    }
}

/* Alphabet Filter Bar */
.alphabet-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
    justify-content: center;
}

.alphabet-filter__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: all 0.15s ease;
}

.alphabet-filter__link:hover {
    color: #ffffff;
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

.alphabet-filter__link.is-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

/* Album Details Hero Banner */
.album-hero {
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 40px 0;
}

.album-hero__grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 36px;
    align-items: center;
}

@media (max-width: 768px) {
    .album-hero__grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 24px;
    }
}

.album-hero__artwork {
    width: 240px;
    height: 240px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 0 auto;
}

/* ==========================================================================
   LIVE AJAX SEARCH & AUTO-SUGGEST DROPDOWN
   ========================================================================== */
.gp-live-search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #181512;
    border: 1px solid rgba(184, 106, 52, 0.35);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 20px rgba(184, 106, 52, 0.15);
    z-index: 1000;
    max-height: 480px;
    overflow-y: auto;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.gp-search-loading {
    padding: 20px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.gp-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(184, 106, 52, 0.25);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: gp-spin 0.6s linear infinite;
}

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

.gp-search-group {
    border-bottom: 1px solid var(--color-border);
}

.gp-search-group:last-child {
    border-bottom: none;
}

.gp-search-group-title {
    padding: 10px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary-light);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    align-items: center;
    gap: 6px;
}

.gp-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--color-text-main);
    transition: background 0.15s ease, border-left-color 0.15s ease;
    border-left: 3px solid transparent;
}

.gp-search-item:hover,
.gp-search-item.is-focused {
    background: rgba(184, 106, 52, 0.12);
    border-left-color: var(--color-primary);
}

.gp-search-item-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.gp-search-song-title,
.gp-search-artist-name,
.gp-search-album-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gp-search-song-artist,
.gp-search-artist-count,
.gp-search-album-artist {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

.gp-search-artist-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
}

.gp-search-artist-initial {
    background: var(--color-primary-subtle);
    color: var(--color-primary-light);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.gp-search-album-cover {
    width: 34px;
    height: 34px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
}

.gp-search-album-icon {
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.gp-search-footer {
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.3);
    text-align: center;
}

.gp-search-view-all {
    font-size: var(--font-size-xs);
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: color 0.15s ease;
}

.gp-search-view-all:hover {
    color: #ffffff;
    text-decoration: underline;
}

.gp-search-empty {
    padding: 24px 16px;
    text-align: center;
}

.gp-search-empty p {
    font-size: var(--font-size-sm);
    color: var(--color-text-main);
    margin-bottom: 4px;
}

/* Trạng thái Active cho nút Metronome & Loop trong Studio Toolbar */
#gpStudioPlayerWrapper .gp-toggle-btn.active,
.gp-player-toolbar .gp-toggle-btn.active,
.gp-toggle-btn.active {
    background: #0284c7 !important;
    border-color: #38bdf8 !important;
    color: #ffffff !important;
    box-shadow: 0 0 14px rgba(56, 189, 248, 0.55) !important;
}

#gpStudioPlayerWrapper .gp-toggle-btn.active svg,
.gp-player-toolbar .gp-toggle-btn.active svg,
.gp-toggle-btn.active svg {
    color: #ffffff !important;
    stroke: #ffffff !important;
}

/* ==========================================================================
   ALPHATAB PLAYBACK CURSORS & HIGHLIGHTS (CÂY HIGHLIGHT TIẾN TRÌNH GUITAR PRO)
   ========================================================================== */
.at-cursors {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

.at-cursor-beat {
    position: absolute;
    background: #ef4444 !important; /* Cây highlight màu đỏ chuẩn Guitar Pro */
    width: 3px !important;
    border-radius: 2px !important;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.85), 0 0 2px #b91c1c !important;
    pointer-events: none !important;
    z-index: 1001 !important;
    display: block !important;
}

.at-cursor-bar {
    position: absolute;
    background: rgba(245, 158, 11, 0.16) !important;
    border-left: 2px solid rgba(245, 158, 11, 0.6) !important;
    border-right: 2px solid rgba(245, 158, 11, 0.6) !important;
    border-radius: 4px;
    pointer-events: none !important;
    z-index: 999 !important;
    display: block !important;
}

.at-selection {
    position: absolute;
    background: rgba(56, 189, 248, 0.22) !important;
    border: 1px dashed rgba(56, 189, 248, 0.6) !important;
    border-radius: 4px;
    pointer-events: none !important;
    z-index: 998 !important;
}