/* Premium Podcast Manager - Ultra Modern Design */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-glow: 0 0 30px rgba(99, 102, 241, 0.3);
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glass-backdrop: blur(20px);
    
    /* Surface Colors */
    --surface-primary: #ffffff;
    --surface-secondary: #f8fafc;
    --surface-tertiary: #f1f5f9;
    --surface-glass: rgba(255, 255, 255, 0.95);
    --surface-dark: #1e293b;
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Status Colors */
    --success: #22c55e;
    --success-light: #86efac;
    --error: #ef4444;
    --error-light: #fca5a5;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Spacing & Sizing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    
    /* Animations */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

.podcast-upload-container,
.podcast-list-container {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Advanced Upload Form */
.podcast-upload-form {
    background: var(--surface-glass);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.podcast-upload-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.podcast-upload-form h3 {
    margin: 0 0 2rem 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.podcast-upload-form h3::before {
    content: '🎙️';
    font-size: 1.5rem;
}

/* Premium Form Groups */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.form-group input[type="text"] {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--surface-tertiary);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--surface-primary);
    transition: all var(--transition-normal);
    outline: none;
}

.form-group input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

/* Revolutionary File Upload */
.file-upload-area {
    position: relative;
    border: 3px dashed var(--surface-tertiary);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: linear-gradient(145deg, var(--surface-secondary), var(--surface-primary));
    transition: all var(--transition-normal) var(--bounce);
    cursor: pointer;
    overflow: hidden;
    width: 100%;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.file-upload-area::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    background: var(--primary-gradient);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform var(--transition-slow) var(--bounce);
    opacity: 0.1;
}

.file-upload-area:hover::before {
    transform: translate(-50%, -50%) scale(3);
}

.file-upload-area:hover {
    border-color: var(--primary);
    background: var(--surface-primary);
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.file-upload-area.dragover {
    border-color: var(--primary);
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    transform: scale(1.05);
    box-shadow: var(--primary-glow);
}

.file-upload-area.file-selected {
    border-color: var(--success);
    background: linear-gradient(145deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
}

.file-upload-area.file-selected .upload-icon {
    background: linear-gradient(135deg, var(--success), #16a34a);
}

.file-upload-area.file-selected .upload-text {
    color: var(--success);
    font-weight: 700;
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
    cursor: pointer;
    user-select: none;
    transition: transform var(--transition-normal);
}

.upload-icon:hover {
    transform: scale(1.1) translateY(-10px);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.upload-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-normal);
}

.upload-text:hover {
    color: var(--primary);
}

.upload-subtext {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-normal);
}

.upload-subtext:hover {
    color: var(--primary);
}

.file-input-hidden {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

/* Next-Gen Buttons */
.podcast-upload-btn {
    background: var(--primary-gradient) !important;
    border: none !important;
    border-radius: var(--radius-lg) !important;
    padding: 1rem 2.5rem !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    color: var(--text-inverse) !important;
    cursor: pointer !important;
    position: relative !important;
    overflow: hidden !important;
    transition: all var(--transition-normal) !important;
    box-shadow: var(--shadow-lg) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.025em !important;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif !important;
    outline: none !important;
    text-decoration: none !important;
    display: inline-block !important;
    text-align: center !important;
    vertical-align: middle !important;
    user-select: none !important;
    line-height: 1.5 !important;
    margin: 0 !important;
}

.podcast-upload-btn::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: -100% !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent) !important;
    transition: left var(--transition-slow) !important;
    z-index: 1 !important;
}

.podcast-upload-btn:hover::before {
    left: 100% !important;
}

.podcast-upload-btn:hover {
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-2xl), var(--primary-glow) !important;
    background: var(--primary-gradient) !important;
    color: var(--text-inverse) !important;
}

.podcast-upload-btn:active {
    transform: translateY(-1px) !important;
}

.podcast-upload-btn:focus {
    outline: 2px solid var(--primary) !important;
    outline-offset: 2px !important;
}

.podcast-upload-btn:disabled {
    background: var(--text-tertiary) !important;
    cursor: not-allowed !important;
    transform: none !important;
    box-shadow: var(--shadow-sm) !important;
    opacity: 0.6 !important;
}

/* Legacy support for .btn-upload class */
.btn-upload {
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-lg);
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-inverse);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.btn-upload::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn-upload:hover::before {
    left: 100%;
}

.btn-upload:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl), var(--primary-glow);
}

.btn-upload:active {
    transform: translateY(-1px);
}

.btn-upload:disabled {
    background: var(--text-tertiary);
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-sm);
}

/* Futuristic Progress Bar */
.upload-progress {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--surface-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--surface-tertiary);
}

.progress-container {
    position: relative;
    height: 8px;
    background: var(--surface-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
}

/* Ultra Modern Management Section */
.podcast-management {
    background: var(--surface-glass);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.podcast-management::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.podcast-management h3 {
    margin: 0 0 2rem 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.podcast-management h3::before {
    content: '⚙️';
    font-size: 1.5rem;
}

.manage-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    margin-bottom: 1rem;
    background: var(--surface-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--surface-tertiary);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.manage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.manage-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.manage-item:hover::before {
    transform: scaleY(1);
}

.manage-info strong {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.manage-info small {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.manage-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-rename,
.btn-delete {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    position: relative;
    overflow: hidden;
}

.btn-rename {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-rename:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(102, 126, 234, 0.4);
}

.btn-delete {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-delete:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(255, 107, 107, 0.4);
}

/* Revolutionary Podcast Player */
.podcast-list-container {
    display: grid;
    gap: 1.5rem;
}

.no-podcasts {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--surface-glass);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 500;
}

.podcast-item {
    background: var(--surface-glass);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.podcast-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.podcast-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary);
}

.podcast-item:hover::before {
    transform: scaleX(1);
}

.podcast-item.playing {
    border-color: var(--primary);
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1), var(--surface-glass));
    box-shadow: var(--shadow-2xl), var(--primary-glow);
}

.podcast-item.playing::before {
    transform: scaleX(1);
    animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.podcast-info {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.podcast-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.podcast-item:hover .podcast-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl), var(--primary-glow);
}

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

@keyframes pulse-icon {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.podcast-details {
    flex: 1;
}

.podcast-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.podcast-meta {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Advanced Audio Controls */
.podcast-controls {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    align-items: center;
    gap: 1rem;
}

.play-btn {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.play-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all var(--transition-fast);
}

.play-btn:hover::before {
    width: 100%;
    height: 100%;
}

.play-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl), var(--primary-glow);
}

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

.audio-progress {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-track {
    width: 100%;
    height: 6px;
    background: var(--surface-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.progress-track::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: loading-shimmer 2s infinite;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.podcast-item.playing .progress-track::before {
    opacity: 1;
}

@keyframes loading-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--transition-fast);
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    transform: translateY(-50%) scale(0);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.progress-track:hover .progress-bar::after {
    transform: translateY(-50%) scale(1);
}

.time-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* Premium Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--surface-tertiary);
}

.volume-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.volume-btn:hover {
    color: var(--primary);
    background: var(--surface-primary);
}

.volume-slider {
    width: 60px;
    height: 4px;
    background: var(--surface-tertiary);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-lg), var(--primary-glow);
}

/* Action Buttons */
.download-btn,
.share-btn {
    background: var(--surface-secondary);
    border: 1px solid var(--surface-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.75rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-btn:hover,
.share-btn:hover {
    color: var(--primary);
    background: var(--surface-primary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Messages & Notifications */
#upload-message {
    margin-top: 1rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    display: none;
    position: relative;
    overflow: hidden;
}

#upload-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

#upload-message.success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.2);
    display: block;
}

#upload-message.success::before {
    background: var(--success);
}

#upload-message.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: block;
}

#upload-message.error::before {
    background: var(--error);
}

/* Responsive Design */
@media (max-width: 768px) {
    .podcast-upload-container,
    .podcast-list-container {
        padding: 0 0.5rem;
        margin: 1rem auto;
    }
    
    .podcast-upload-form,
    .podcast-management {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .podcast-item {
        padding: 1.5rem;
    }
    
    .podcast-info {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .podcast-icon {
        margin-bottom: 1rem;
    }
    
    .podcast-controls {
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        gap: 1rem;
    }
    
    .audio-progress {
        grid-column: 1 / -1;
        order: -1;
    }
    
    .volume-control {
        display: none;
    }
    
    .manage-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .manage-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid var(--surface-tertiary);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Focus States for Accessibility */
.play-btn:focus,
.volume-btn:focus,
.download-btn:focus,
.share-btn:focus,
.btn-upload:focus,
.podcast-upload-btn:focus,
.btn-rename:focus,
.btn-delete:focus {
    outline: 2px solid var(--primary) !important;
    outline-offset: 2px !important;
}

/* Hidden Audio Element */
audio {
    display: none;
}

/* High-end Animations */
@keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.podcast-item.playing {
    animation: breathe 4s ease-in-out infinite;
}