/* Audio Player - Isolated Styles */
/* Prefix: ap- (audio player) để tránh xung đột CSS */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600&display=swap');

.ap-container {
    --ap-primary: #6366f1;
    --ap-primary-light: #818cf8;
    --ap-pink: #ec4899;
    --ap-pink-light: #f472b6;
    --ap-bg: #ffffff;
    --ap-bg-player: #f8fafc;
    --ap-text: #1e293b;
    --ap-text-muted: #64748b;
    --ap-border: #e2e8f0;
    --ap-progress-bg: #e2e8f0;
    --ap-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
    
    font-family: 'Be Vietnam Pro', sans-serif;
    max-width: 360px;
    box-sizing: border-box;
    padding: 20px;
}

.ap-container *,
.ap-container *::before,
.ap-container *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.ap-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--ap-text);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ap-label::before {
    content: '';
    width: 3px;
    height: 14px;
    background: linear-gradient(135deg, var(--ap-primary), var(--ap-primary-light));
    border-radius: 2px;
}

.ap-player {
    background: var(--ap-bg-player);
    border: 1px solid var(--ap-border);
    border-radius: 14px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.ap-player:hover {
    box-shadow: var(--ap-shadow);
    border-color: var(--ap-primary-light);
}

/* ========== GRADIENT BORDER ANIMATION ========== */
.ap-gradient-border {
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(
        90deg,
        var(--ap-primary) 0%,
        var(--ap-primary-light) 25%,
        var(--ap-pink) 50%,
        var(--ap-pink-light) 75%,
        var(--ap-primary) 100%
    );
    background-size: 200% 100%;
    border-radius: 17px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease;
}

/* Keyframes for smooth flowing gradient */
@keyframes ap-flow-gradient {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: -200% 50%;
    }
}

/* When playing - show animated gradient border */
.ap-player.ap-is-playing .ap-gradient-border {
    opacity: 1;
    animation: ap-flow-gradient 3s linear infinite;
}

/* Inner background to cover the gradient except border */
.ap-player::before {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    right: 1px;
    bottom: 1px;
    background: var(--ap-bg-player);
    border-radius: 13px;
    z-index: 0;
}

/* Ensure all player content is above the pseudo-elements */
.ap-player > *:not(.ap-gradient-border) {
    position: relative;
    z-index: 1;
}

/* Optional: Subtle shadow when playing */
.ap-player.ap-is-playing {
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.2);
}

/* ========== END GRADIENT BORDER ANIMATION ========== */

/* Play Button */
.ap-play-btn {
    width: 42px;
    height: 42px;
    min-width: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ap-primary), var(--ap-primary-light));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    flex-shrink: 0;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}

.ap-play-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.ap-play-btn:active {
    transform: scale(0.95);
}

.ap-play-btn svg {
    width: 18px;
    height: 18px;
    fill: white;
}

.ap-play-btn .ap-pause-icon {
    display: none;
}

.ap-play-btn.ap-playing .ap-play-icon {
    display: none;
}

.ap-play-btn.ap-playing .ap-pause-icon {
    display: block;
}

/* Play button gradient animation when playing */
.ap-play-btn.ap-playing {
    background: linear-gradient(
        90deg,
        var(--ap-primary) 0%,
        var(--ap-pink) 50%,
        var(--ap-primary) 100%
    );
    background-size: 200% 100%;
    animation: ap-btn-gradient 2s linear infinite;
}

@keyframes ap-btn-gradient {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: -200% 50%;
    }
}

/* Progress Section */
.ap-progress-section {
    flex: 1;
    min-width: 0;
}

.ap-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--ap-progress-bg);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.ap-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--ap-primary), var(--ap-primary-light));
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
    position: relative;
}

/* Progress bar gradient when playing */
.ap-player.ap-is-playing .ap-progress-fill {
    background: linear-gradient(
        90deg,
        var(--ap-primary) 0%,
        var(--ap-pink) 50%,
        var(--ap-primary) 100%
    );
    background-size: 200% 100%;
    animation: ap-progress-gradient 2s linear infinite;
}

@keyframes ap-progress-gradient {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: -200% 50%;
    }
}

.ap-progress-fill::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: white;
    border: 2px solid var(--ap-primary);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.ap-progress-bar:hover .ap-progress-fill::after {
    opacity: 1;
}

.ap-time-display {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 11px;
    color: var(--ap-text-muted);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

/* Volume Control */
.ap-volume-control {
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.ap-volume-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ap-text-muted);
    transition: color 0.2s ease, background 0.2s ease;
    border-radius: 6px;
}

.ap-volume-btn:hover {
    color: var(--ap-primary);
    background: rgba(99, 102, 241, 0.08);
}

.ap-volume-btn svg {
    width: 18px;
    height: 18px;
}

.ap-volume-slider-wrapper {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ap-bg);
    border: 1px solid var(--ap-border);
    border-radius: 10px;
    padding: 12px 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    margin-bottom: 8px;
    z-index: 100;
}

.ap-volume-control:hover .ap-volume-slider-wrapper,
.ap-volume-slider-wrapper:hover {
    opacity: 1;
    visibility: visible;
}

.ap-volume-slider {
    writing-mode: vertical-lr;
    direction: rtl;
    width: 6px;
    height: 70px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--ap-progress-bg);
    border-radius: 3px;
    cursor: pointer;
}

.ap-volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--ap-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
}

.ap-volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--ap-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Hidden audio element */
.ap-container audio {
    display: none;
}

/* Responsive */
@media (max-width: 400px) {
    .ap-container {
        max-width: 100%;
    }
}