/**
 * GuitarPro Studio Player - CSS Stylesheet
 * Giao diện phòng thu chuyên nghiệp (DAW Studio Dark Mode)
 */

:root {
    --gp-bg-main: var(--color-bg, #070d19);
    --gp-bg-surface: var(--color-surface, #0e172e);
    --gp-bg-toolbar: var(--color-surface, #0e172e);
    --gp-border: var(--color-border, rgba(255, 255, 255, 0.08));
    --gp-border-active: var(--color-primary, #fa2d48);
    --gp-primary: var(--color-primary, #fa2d48);
    --gp-primary-hover: var(--color-primary-hover, #ff375f);
    --gp-primary-text: #ffffff;
    --gp-text-main: var(--color-text, #f8fafc);
    --gp-text-muted: var(--color-text-muted, #94a3b8);
    --gp-success: var(--color-success, #10b981);
    --gp-danger: var(--color-danger, #ef4444);
    --gp-active-btn: #38bdf8;
    --gp-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="stage"] .gp-studio-player-wrapper {
    background: #000000 !important;
    border-color: #222222 !important;
}

[data-theme="stage"] .gp-player-toolbar {
    background: #0a0a0a !important;
    border-color: #222222 !important;
}

[data-theme="stage"] .gp-btn {
    background: #141414 !important;
    border-color: #262626 !important;
    color: #ffffff !important;
}

[data-theme="stage"] .gp-viewport {
    background: #000000 !important;
}

/* Wrapper chính */
.gp-studio-player-wrapper {
    position: relative;
    background: var(--gp-bg-main);
    border: 1px solid var(--gp-border);
    border-radius: 12px;
    overflow: hidden;
    margin: 24px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    font-family: var(--gp-font-sans);
    color: var(--gp-text-main);
}

/* Thanh điều khiển Toolbar */
.gp-player-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 18px;
    background: var(--gp-bg-toolbar);
    border-bottom: 1px solid var(--gp-border);
}

.gp-toolbar-left,
.gp-toolbar-center,
.gp-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Các loại nút bấm */
.gp-player-toolbar .gp-btn,
.gp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 38px;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 600;
    color: #f1f5f9;
    background: #152243;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    user-select: none;
    box-sizing: border-box;
}

.gp-player-toolbar .gp-btn svg,
.gp-btn svg {
    color: #e2e8f0;
    flex-shrink: 0;
}

.gp-player-toolbar .gp-btn svg[fill="currentColor"],
.gp-btn svg[fill="currentColor"] {
    fill: currentColor;
}

.gp-player-toolbar .gp-btn svg[stroke="currentColor"],
.gp-btn svg[stroke="currentColor"] {
    stroke: currentColor;
}

.gp-player-toolbar .gp-btn:hover,
.gp-btn:hover {
    background: #1e3160;
    border-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.gp-player-toolbar .gp-btn:hover svg,
.gp-btn:hover svg {
    color: #ffffff;
}

.gp-player-toolbar .gp-btn-icon,
.gp-btn-icon {
    width: 38px;
    min-width: 38px;
    padding: 0;
    border-radius: 8px;
}

/* Animation cho Spinner khi đang tải */
@keyframes gp-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.gp-spinner {
    animation: gp-spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
}

@keyframes gp-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.85; transform: scale(0.98); }
}

/* Nút Play/Pause chính (State Machine) */
.gp-play-pause-btn {
    min-width: 105px;
    height: 40px;
    font-size: 13.5px;
    font-weight: 700;
    border-radius: 9px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.gp-play-pause-btn.is-loading {
    background: #232735;
    border-color: #3b4256;
    color: #94a3b8;
    cursor: wait;
}

.gp-play-pause-btn.is-queued {
    background: #d97706;
    border-color: #f59e0b;
    color: #ffffff;
    animation: gp-pulse 1.2s infinite;
}

.gp-play-pause-btn.is-ready {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-color: #f59e0b;
    color: #0f172a;
    box-shadow: 0 2px 10px rgba(245, 158, 11, 0.35);
}

.gp-play-pause-btn.is-ready:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    border-color: #fbbf24;
    color: #000000;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.5);
    transform: translateY(-1px);
}

.gp-play-pause-btn.is-playing {
    background: linear-gradient(135deg, #e11d48, #be123c);
    border-color: #f43f5e;
    color: #ffffff;
    box-shadow: 0 2px 12px rgba(225, 29, 72, 0.4);
}

.gp-play-pause-btn.is-playing:hover {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
    box-shadow: 0 4px 16px rgba(225, 29, 72, 0.55);
    transform: translateY(-1px);
}

/* Nút Trạng thái Active (Toggle) */
.gp-toggle-btn.active {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--gp-active-btn);
    color: var(--gp-active-btn);
}

/* Nút Tải file Tab gốc */
.gp-player-toolbar .gp-btn-download,
.gp-btn-download {
    background: rgba(16, 185, 129, 0.15) !important;
    border: 1px solid rgba(16, 185, 129, 0.35) !important;
    color: #10b981 !important;
    border-radius: 8px !important;
}

.gp-player-toolbar .gp-btn-download svg,
.gp-btn-download svg {
    color: #10b981 !important;
    stroke: #10b981 !important;
}

.gp-player-toolbar .gp-btn-download:hover,
.gp-btn-download:hover {
    background: #10b981 !important;
    border-color: #10b981 !important;
    color: #ffffff !important;
}

.gp-player-toolbar .gp-btn-download:hover svg,
.gp-btn-download:hover svg {
    color: #ffffff !important;
    stroke: #ffffff !important;
}

/* Bộ điều khiển tốc độ Speed Chips */
.gp-speed-control {
    display: flex;
    align-items: center;
    gap: 6px;
}

.gp-speed-label {
    font-size: 12px;
    color: var(--gp-text-muted);
}

.gp-speed-chips {
    display: flex;
    background: var(--gp-bg-surface);
    border: 1px solid var(--gp-border);
    border-radius: 6px;
    padding: 2px;
}

.gp-chip {
    background: transparent;
    border: none;
    color: var(--gp-text-muted);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gp-chip:hover {
    color: var(--gp-text-main);
}

.gp-chip.active {
    background: var(--gp-primary);
    color: #ffffff;
}

/* Tempo BPM Text */
.gp-tempo-bpm {
    font-size: 12px;
    font-weight: 700;
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Zoom Dropdown */
.gp-select-zoom {
    height: 38px;
    background: var(--gp-bg-surface);
    color: var(--gp-text-main);
    border: 1px solid var(--gp-border);
    border-radius: 8px;
    padding: 0 10px;
    font-size: 12px;
    cursor: pointer;
}

/* Multi-version Selector Dropdown */
.gp-version-selector-container {
    display: inline-flex;
    align-items: center;
    position: relative;
    background: #1a1d26;
    border: 1px solid #3b4256;
    border-radius: 8px;
    padding: 0 8px 0 10px;
    height: 38px;
    gap: 6px;
    transition: all 0.2s ease;
}

.gp-version-selector-container:hover,
.gp-version-selector-container:focus-within {
    border-color: #f59e0b;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.25);
}

.gp-version-icon-wrap {
    display: flex;
    align-items: center;
    color: #f59e0b;
    flex-shrink: 0;
}

.gp-select-version {
    height: 100%;
    background: transparent;
    color: #ffffff;
    border: none;
    padding: 0 6px 0 0;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    outline: none;
    max-width: 280px;
}

.gp-select-version option {
    background: #1a1d26;
    color: #e2e8f0;
}

/* Thanh trạng thái nạp SoundFont */
.gp-player-status-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 18px;
    background: #161822;
    border-bottom: 1px solid var(--gp-border);
    font-size: 12px;
    transition: all 0.5s ease;
    max-height: 40px;
    overflow: hidden;
}

.gp-status-fade {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: none;
    pointer-events: none;
}

.gp-status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f59e0b;
    box-shadow: 0 0 6px #f59e0b;
}

.gp-status-indicator.ready {
    background: var(--gp-success);
    box-shadow: 0 0 6px var(--gp-success);
}

.gp-player-progress-track {
    flex: 1;
    height: 4px;
    background: #232736;
    border-radius: 2px;
    overflow: hidden;
}

.gp-player-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff6f00, #10b981);
    transition: width 0.2s ease;
}

/* Drawer danh sách Tracks / Mixer */
.gp-tracks-drawer {
    background: #181b24;
    border-bottom: 1px solid var(--gp-border);
    padding: 14px 18px;
}

.gp-tracks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.gp-tracks-header h4 {
    margin: 0;
    font-size: 13px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gp-close-btn {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
}

.gp-tracks-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 10px;
}

.gp-track-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--gp-bg-toolbar);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--gp-border);
}

.gp-track-info {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
}

.gp-track-num {
    font-size: 11px;
    color: #64748b;
    font-weight: 700;
}

.gp-track-name {
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.gp-track-controls {
    display: flex;
    gap: 4px;
}

.gp-btn-mixer {
    width: 24px;
    height: 24px;
    border: 1px solid var(--gp-border);
    background: #2a3042;
    color: #cbd5e1;
    font-size: 10px;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.gp-solo-btn.active {
    background: #eab308;
    border-color: #ca8a04;
    color: #000000;
}

.gp-mute-btn.active {
    background: var(--gp-danger);
    border-color: var(--gp-danger);
    color: #ffffff;
}

/* Cần đàn ảo Virtual Fretboard */
.gp-fretboard-container {
    background: #0d0f14;
    border-bottom: 1px solid var(--gp-border);
    padding: 16px;
    overflow-x: auto;
}

.gp-fretboard {
    min-height: 100px;
    background: #1e1b18;
    border: 2px solid #3e2723;
    border-radius: 6px;
}

/* Vùng hiển thị AlphaTab Canvas */
.gp-alphatab-viewport {
    background: #ffffff;
    min-height: 480px;
    padding: 24px 16px;
    overflow-x: auto;
    position: relative;
}

#alphaTab {
    width: 100%;
    margin: 0 auto;
}

/* Thông báo Notice */
.gp-player-notice {
    padding: 16px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid #f59e0b;
    border-radius: 8px;
    color: #fbbf24;
    font-size: 14px;
    margin: 16px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .gp-player-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .gp-toolbar-left,
    .gp-toolbar-center,
    .gp-toolbar-right {
        justify-content: space-between;
    }
    .gp-track-name {
        max-width: 100px;
    }
}