/**
 * Frequency Relax - Audio Player Styles
 */

/* ============================================
   Player Container
   ============================================ */
.player-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    animation: fadeIn 0.6s ease-out;
}

/* ============================================
   Player Header
   ============================================ */
.player-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.player-header h1 {
    font-size: 1.5rem;
    margin: 0;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-info span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ============================================
   License Info
   ============================================ */
.license-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.license-badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.license-expiry {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.license-expiry strong {
    color: var(--accent-teal);
    font-weight: 600;
}

/* ============================================
   Frequency List
   ============================================ */
.frequency-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.frequency-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.frequency-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0.1;
    transition: width var(--transition-normal);
}

.frequency-item:hover {
    border-color: var(--accent-teal);
    transform: translateX(5px);
}

.frequency-item:hover::before {
    width: 100%;
}

.frequency-item.active {
    border-color: var(--accent-teal);
    background: rgba(93, 226, 163, 0.1);
}

.frequency-item.active::before {
    width: 100%;
}

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

.frequency-item.disabled:hover {
    transform: none;
    border-color: var(--border-glass);
}

.frequency-info {
    flex: 1;
    z-index: 1;
}

.frequency-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.frequency-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.frequency-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    z-index: 1;
}

.frequency-badge.premium {
    background: var(--accent-gradient);
    color: var(--text-primary);
}

/* ============================================
   Now Playing Section
   ============================================ */
.now-playing {
    padding: var(--spacing-lg);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-medium);
}

.now-playing-info {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.frequency-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.frequency-description {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ============================================
   Audio Controls
   ============================================ */
.audio-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.btn-control {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-control:hover {
    background: var(--bg-glass-hover);
    transform: scale(1.1);
}

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

.btn-control:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-control:disabled:hover {
    transform: none;
}

/* ⭐ Loading state for protocol preload */
.btn-control:disabled.loading {
    opacity: 0.6;
    cursor: wait;
}

.btn-control:disabled.loading .fa-spinner {
    color: var(--accent-teal);
    animation: spin 1s linear infinite;
}

.btn-play {
    width: 70px;
    height: 70px;
    font-size: 1.75rem;
    background: var(--accent-gradient);
    box-shadow: 0 4px 20px rgba(93, 226, 163, 0.4);
}

.btn-play:hover {
    box-shadow: 0 6px 30px rgba(93, 226, 163, 0.6);
}

/* Play button during preload - slightly dimmed but visible */
.btn-play:disabled {
    opacity: 0.6;
    cursor: wait;
    background: linear-gradient(135deg, var(--accent-teal) 0%, var(--accent-purple) 100%);
}

.btn-play:disabled:hover {
    transform: none;
    box-shadow: 0 4px 20px rgba(93, 226, 163, 0.3);
}

.btn-loop.active {
    background: var(--accent-gradient);
    box-shadow: 0 4px 15px rgba(93, 226, 163, 0.4);
}

/* ============================================
   Progress Bar
   ============================================ */
.progress-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.time-current,
.time-total {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 40px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

.progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(93, 226, 163, 0.6);
}

.progress-bar:hover .progress-fill::after {
    width: 16px;
    height: 16px;
}

/* ============================================
   Volume Control
   ============================================ */
.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.volume-icon {
    font-size: 1.25rem;
}

#volume-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

#volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-teal);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(93, 226, 163, 0.6);
    transition: all var(--transition-fast);
}

#volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px rgba(93, 226, 163, 0.8);
}

#volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-teal);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(93, 226, 163, 0.6);
    border: none;
    transition: all var(--transition-fast);
}

#volume-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px rgba(93, 226, 163, 0.8);
}

.volume-value {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 40px;
    text-align: right;
}

/* ============================================
   Loading State
   ============================================ */
.frequency-item.loading {
    pointer-events: none;
}

.frequency-item.loading::after {
    content: '';
    position: absolute;
    right: var(--spacing-md);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent-teal);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 2;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .player-container {
        max-width: 100%;
    }

    .player-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .player-header h1 {
        font-size: 1.25rem;
    }

    .license-info {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .frequency-name {
        font-size: 1rem;
    }

    .frequency-desc {
        font-size: 0.8rem;
    }

    .now-playing {
        padding: var(--spacing-md);
    }

    .frequency-title {
        font-size: 1.25rem;
    }

    .frequency-description {
        font-size: 0.9rem;
    }

    .audio-controls {
        gap: var(--spacing-sm);
    }

    .btn-control {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }

    .btn-play {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .player-header,
    .license-info,
    .now-playing {
        padding: var(--spacing-sm);
    }

    .frequency-item {
        padding: var(--spacing-sm);
    }

    .frequency-item:hover {
        transform: none;
    }

    .audio-controls {
        gap: var(--spacing-xs);
    }

    .btn-control {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }

    .btn-play {
        width: 55px;
        height: 55px;
        font-size: 1.25rem;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes pulse-playing {
    0%, 100% {
        box-shadow: 0 0 20px rgba(93, 226, 163, 0.4);
    }
    50% {
        box-shadow: 0 0 30px rgba(93, 226, 163, 0.6);
    }
}

.frequency-item.active {
    animation: pulse-playing 2s ease-in-out infinite;
}

/* Visualizer animation (optional) */
.audio-visualizer {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    height: 40px;
    margin: var(--spacing-md) 0;
}

.visualizer-bar {
    width: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
    animation: visualize 0.8s ease-in-out infinite;
}

.visualizer-bar:nth-child(1) { animation-delay: 0s; }
.visualizer-bar:nth-child(2) { animation-delay: 0.1s; }
.visualizer-bar:nth-child(3) { animation-delay: 0.2s; }
.visualizer-bar:nth-child(4) { animation-delay: 0.3s; }
.visualizer-bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes visualize {
    0%, 100% {
        height: 10px;
    }
    50% {
        height: 30px;
    }
}

/* ============================================
   Protocol Markers (Orange Step Indicators)
   ============================================ */
.protocol-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--warning);
    border: 2px solid rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 0 8px rgba(255, 152, 0, 0.6);
}

.protocol-marker:hover {
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 12px rgba(255, 152, 0, 0.8);
}

.protocol-marker.active {
    background: #ffeb3b;
    border-color: #ffffff;
    animation: pulse-marker 1s infinite;
    width: 14px;
    height: 14px;
}

.protocol-marker.completed {
    background: #4caf50;
    border-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0 0 6px rgba(76, 175, 80, 0.5);
}

@keyframes pulse-marker {
    0%, 100% {
        box-shadow: 0 0 8px rgba(255, 235, 59, 0.6);
    }
    50% {
        box-shadow: 0 0 16px rgba(255, 235, 59, 0.9);
    }
}

/* Mobile touch targets */
@media (max-width: 768px) {
    .protocol-marker {
        width: 16px;
        height: 16px;
        border-width: 3px;
    }

    .protocol-marker.active {
        width: 18px;
        height: 18px;
    }
}