/**
 * TrackManagerUI Styles
 * Provides styling for video player track management controls
 * 
 * @version 1.0.0
 * @author TPLive
 */

/* ========================================
   Container & Positioning
   ======================================== */

.track-manager-container {
    position: absolute;
    z-index: 1000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    user-select: none;
}

/* Position variants */
.track-manager-bottom-right {
    bottom: 60px;
    right: 15px;
}

.track-manager-bottom-left {
    bottom: 60px;
    left: 15px;
}

.track-manager-top-right {
    top: 15px;
    right: 15px;
}

.track-manager-top-left {
    top: 15px;
    left: 15px;
}

/* ========================================
   Settings Button
   ======================================== */

.track-manager-settings-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.track-manager-settings-btn:hover {
    background: rgba(0, 0, 0, 0.85);
    transform: scale(1.05);
}

.track-manager-settings-btn:active {
    transform: scale(0.95);
}

.track-manager-settings-btn.active {
    background: rgba(220, 53, 69, 0.85);
}

.track-manager-settings-btn:focus {
    outline: 2px solid rgba(220, 53, 69, 0.5);
    outline-offset: 2px;
}

.track-manager-settings-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
}

/* ========================================
   Menu Container
   ======================================== */

.track-manager-menu {
    position: absolute;
    bottom: 50px;
    right: 0;
    min-width: 280px;
    max-width: 320px;
    max-height: 400px;
    overflow-y: auto;
    background: rgba(20, 20, 20, 0.95);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: fadeInUp 0.2s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Custom scrollbar */
.track-manager-menu::-webkit-scrollbar {
    width: 6px;
}

.track-manager-menu::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.track-manager-menu::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.track-manager-menu::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Menu Header
   ======================================== */

.track-manager-menu-header {
    padding: 16px 20px;
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px 8px 0 0;
}

/* ========================================
   Sections
   ======================================== */

.track-manager-section {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.track-manager-section:last-child {
    border-bottom: none;
}

.track-manager-section-title {
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.track-manager-section-content {
    padding: 4px 0;
}

/* ========================================
   Menu Items
   ======================================== */

.track-manager-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
}

.track-manager-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.track-manager-item:active {
    background: rgba(255, 255, 255, 0.15);
}

.track-manager-item:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.12);
}

.track-manager-item.active {
    background: rgba(220, 53, 69, 0.2);
    color: #dc3545;
}

.track-manager-item.active:hover {
    background: rgba(220, 53, 69, 0.3);
}

.track-manager-item.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.track-manager-item.disabled:hover {
    background: transparent;
}

/* ========================================
   Track Labels & Indicators
   ======================================== */

.track-label {
    font-size: 14px;
    font-weight: 400;
    flex: 1;
}

.track-checkmark {
    font-size: 16px;
    font-weight: bold;
    margin-left: 12px;
    color: #dc3545;
}

.track-manager-item.active .track-checkmark {
    animation: checkmarkPop 0.2s ease;
}

@keyframes checkmarkPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

/* ========================================
   Loading State
   ======================================== */

.track-manager-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.track-manager-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 10px;
}

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

/* ========================================
   Error State
   ======================================== */

.track-manager-error {
    padding: 16px 20px;
    color: #dc3545;
    font-size: 13px;
    text-align: center;
}

/* ========================================
   Empty State
   ======================================== */

.track-manager-empty {
    padding: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Tablet */
@media (max-width: 768px) {
    .track-manager-menu {
        min-width: 260px;
        max-width: 280px;
        right: 0;
    }

    .track-manager-settings-btn {
        width: 36px;
        height: 36px;
    }

    .track-manager-settings-btn svg {
        width: 18px;
        height: 18px;
    }

    .track-manager-menu-header {
        padding: 14px 16px;
        font-size: 16px;
    }

    .track-manager-section-title {
        padding: 6px 16px;
        font-size: 13px;
    }

    .track-manager-item {
        padding: 10px 16px;
    }

    .track-label {
        font-size: 13px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .track-manager-container {
        bottom: 50px;
        right: 10px;
    }

    .track-manager-menu {
        min-width: 240px;
        max-width: 260px;
        max-height: 300px;
    }

    .track-manager-settings-btn {
        width: 32px;
        height: 32px;
    }

    .track-manager-settings-btn svg {
        width: 16px;
        height: 16px;
    }

    .track-manager-menu-header {
        padding: 12px 14px;
        font-size: 15px;
    }

    .track-manager-section-title {
        padding: 6px 14px;
        font-size: 12px;
    }

    .track-manager-item {
        padding: 10px 14px;
    }

    .track-label {
        font-size: 13px;
    }

    .track-checkmark {
        font-size: 14px;
    }
}

/* Very small screens */
@media (max-width: 360px) {
    .track-manager-menu {
        min-width: 220px;
        max-width: 240px;
    }
}

/* ========================================
   Landscape Mobile
   ======================================== */

@media (max-height: 500px) and (orientation: landscape) {
    .track-manager-menu {
        max-height: 250px;
        font-size: 12px;
    }

    .track-manager-menu-header {
        padding: 10px 14px;
        font-size: 14px;
    }

    .track-manager-section-title {
        padding: 4px 14px;
        font-size: 11px;
    }

    .track-manager-item {
        padding: 8px 14px;
    }
}

/* ========================================
   High Contrast Mode (Accessibility)
   ======================================== */

@media (prefers-contrast: high) {
    .track-manager-menu {
        background: rgba(0, 0, 0, 0.98);
        border: 2px solid rgba(255, 255, 255, 0.3);
    }

    .track-manager-settings-btn {
        background: rgba(0, 0, 0, 0.9);
        border: 2px solid rgba(255, 255, 255, 0.5);
    }

    .track-manager-item.active {
        background: rgba(220, 53, 69, 0.4);
        border-left: 3px solid #dc3545;
    }
}

/* ========================================
   Reduced Motion (Accessibility)
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .track-manager-menu,
    .track-manager-settings-btn,
    .track-manager-item,
    .track-checkmark {
        animation: none;
        transition: none;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .track-manager-container {
        display: none;
    }
}

/* ========================================
   Dark Theme Enhancements
   ======================================== */

@media (prefers-color-scheme: dark) {
    .track-manager-menu {
        background: rgba(10, 10, 10, 0.97);
    }

    .track-manager-menu-header {
        background: rgba(0, 0, 0, 0.5);
    }
}

/* ========================================
   Focus Visible (Modern Browsers)
   ======================================== */

.track-manager-settings-btn:focus-visible {
    outline: 3px solid rgba(220, 53, 69, 0.6);
    outline-offset: 3px;
}

.track-manager-item:focus-visible {
    outline: 2px solid rgba(220, 53, 69, 0.5);
    outline-offset: -2px;
}

/* ========================================
   Keyboard Navigation Indicators
   ======================================== */

.track-manager-item:focus:not(:focus-visible) {
    outline: none;
}

/* ========================================
   Touch Device Optimizations
   ======================================== */

@media (hover: none) and (pointer: coarse) {
    .track-manager-item {
        padding: 14px 20px;
        min-height: 44px; /* iOS touch target minimum */
    }

    .track-manager-settings-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

.track-manager-hidden {
    display: none !important;
}

.track-manager-fade-out {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.track-manager-fade-in {
    opacity: 1;
    transition: opacity 0.3s ease;
}