/**
 * Inner Peace Meditations - Audio Player
 * 
 * Custom, minimal audio player with calming aesthetics.
 * Works on desktop and mobile with touch-friendly controls.
 */

/* =========================================
   AUDIO PLAYER CONTAINER
   ========================================= */

.audio-player {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-2xl);
    max-width: 100%;
}

/* Compact variant for lists */
.audio-player.compact {
    padding: var(--space-4);
    gap: var(--space-3);
}

/* =========================================
   TRACK INFO
   ========================================= */

.audio-player__info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.audio-player__artwork {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    background: var(--color-primary-100);
    flex-shrink: 0;
}

.audio-player.compact .audio-player__artwork {
    width: 48px;
    height: 48px;
}

.audio-player__details {
    flex: 1;
    min-width: 0;
}

.audio-player__title {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.audio-player__subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin: 0;
    margin-top: var(--space-1);
}

/* =========================================
   PROGRESS / SEEK BAR
   ========================================= */

.audio-player__progress-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.audio-player__progress-bar {
    position: relative;
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    overflow: visible;
}

.audio-player__progress-bar:hover,
.audio-player__progress-bar.dragging {
    height: 8px;
}

.audio-player__progress-buffered {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--color-neutral-300);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.audio-player__progress-played {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
    border-radius: var(--radius-full);
    pointer-events: none;
}

.audio-player__progress-handle {
    position: absolute;
    top: 50%;
    width: 16px;
    height: 16px;
    background: var(--color-primary-500);
    border: 2px solid var(--bg-secondary);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.audio-player__progress-bar:hover .audio-player__progress-handle,
.audio-player__progress-bar.dragging .audio-player__progress-handle {
    opacity: 1;
}

.audio-player__time {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
}

/* =========================================
   CONTROLS
   ========================================= */

.audio-player__controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.audio-player__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.audio-player__btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.audio-player__btn:active {
    transform: scale(0.95);
}

.audio-player__btn svg {
    width: 24px;
    height: 24px;
}

/* Play/Pause - Larger main button */
.audio-player__btn--play {
    width: 56px;
    height: 56px;
    background: var(--color-primary-500);
    color: white;
}

.audio-player__btn--play:hover {
    background: var(--color-primary-600);
    color: white;
}

.audio-player__btn--play svg {
    width: 28px;
    height: 28px;
}

/* Skip buttons */
.audio-player__btn--skip svg {
    width: 20px;
    height: 20px;
}

.audio-player__btn--skip span {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    position: absolute;
}

/* =========================================
   SECONDARY CONTROLS
   ========================================= */

.audio-player__secondary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-2);
    border-top: var(--border-width) solid var(--border-color);
}

.audio-player__secondary-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* Volume slider */
.audio-player__volume {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.audio-player__volume-slider {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
}

.audio-player__volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--color-primary-500);
    border-radius: var(--radius-full);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-xs);
}

.audio-player__volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--color-primary-500);
    border-radius: var(--radius-full);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: var(--shadow-xs);
}

/* Playback speed */
.audio-player__speed {
    position: relative;
}

.audio-player__speed-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.audio-player__speed-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.audio-player__speed-menu {
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: var(--space-2);
    background: var(--bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-1);
    min-width: 80px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(5px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.audio-player__speed.active .audio-player__speed-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.audio-player__speed-option {
    display: block;
    width: 100%;
    padding: var(--space-2);
    font-size: var(--text-sm);
    text-align: center;
    color: var(--text-primary);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.audio-player__speed-option:hover {
    background: var(--bg-tertiary);
}

.audio-player__speed-option.active {
    background: var(--color-primary-50);
    color: var(--color-primary-700);
    font-weight: var(--font-medium);
}

/* =========================================
   WAVEFORM VISUALIZATION (Optional)
   ========================================= */

.audio-player__waveform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: 32px;
    opacity: 0.6;
}

.audio-player__waveform-bar {
    width: 3px;
    height: 100%;
    background: var(--color-primary-300);
    border-radius: var(--radius-full);
    transform-origin: bottom;
    animation: waveform 1s ease-in-out infinite;
}

.audio-player.playing .audio-player__waveform-bar {
    animation: waveform 0.5s ease-in-out infinite;
}

.audio-player__waveform-bar:nth-child(1) {
    animation-delay: 0s;
}

.audio-player__waveform-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.audio-player__waveform-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.audio-player__waveform-bar:nth-child(4) {
    animation-delay: 0.3s;
}

.audio-player__waveform-bar:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes waveform {

    0%,
    100% {
        transform: scaleY(0.3);
    }

    50% {
        transform: scaleY(1);
    }
}

/* =========================================
   STATES
   ========================================= */

/* Loading state */
.audio-player.loading .audio-player__btn--play {
    pointer-events: none;
}

.audio-player.loading .audio-player__btn--play svg {
    animation: spin 1s linear infinite;
}

/* Error state */
.audio-player.error {
    opacity: 0.7;
}

.audio-player__error {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: rgba(196, 92, 92, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-error);
    font-size: var(--text-sm);
}

/* =========================================
   MINI PLAYER (for course navigation)
   ========================================= */

.audio-player--mini {
    flex-direction: row;
    align-items: center;
    padding: var(--space-3);
    gap: var(--space-3);
}

.audio-player--mini .audio-player__info {
    flex: 1;
    min-width: 0;
}

.audio-player--mini .audio-player__artwork {
    width: 40px;
    height: 40px;
}

.audio-player--mini .audio-player__controls {
    flex-shrink: 0;
}

.audio-player--mini .audio-player__btn--play {
    width: 40px;
    height: 40px;
}

.audio-player--mini .audio-player__btn--play svg {
    width: 20px;
    height: 20px;
}

.audio-player--mini .audio-player__progress-container,
.audio-player--mini .audio-player__secondary {
    display: none;
}

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 480px) {
    .audio-player {
        padding: var(--space-4);
    }

    .audio-player__artwork {
        width: 56px;
        height: 56px;
    }

    .audio-player__btn {
        width: 40px;
        height: 40px;
    }

    .audio-player__btn--play {
        width: 52px;
        height: 52px;
    }

    .audio-player__volume {
        display: none;
    }

    .audio-player__secondary {
        justify-content: flex-end;
    }
}

/* Larger touch targets on touch devices */
@media (hover: none) and (pointer: coarse) {
    .audio-player__btn {
        width: 48px;
        height: 48px;
    }

    .audio-player__btn--play {
        width: 60px;
        height: 60px;
    }

    .audio-player__progress-bar {
        height: 8px;
    }

    .audio-player__progress-handle {
        width: 20px;
        height: 20px;
        opacity: 1;
    }
}