/**
 * Modern Upload Components
 * Beautiful drag & drop interfaces for audio and images
 */

/* Upload Zone Base */
.upload-zone {
    position: relative;
    border: 2px dashed #404040;
    border-radius: 12px;
    background: #1a1a1a;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover {
    border-color: #4CAF50;
    background: #222;
    transform: translateY(-2px);
}

.upload-zone.drag-over {
    border-color: #4CAF50;
    background: rgba(76, 175, 80, 0.1);
    border-style: solid;
    transform: scale(1.02);
}

.upload-zone input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

/* Upload Zone Content */
.upload-icon {
    font-size: 3.5rem;
    color: #4CAF50;
    margin-bottom: 15px;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.upload-zone:hover .upload-icon {
    opacity: 1;
    transform: scale(1.1);
}

.upload-text {
    color: #e0e0e0;
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.upload-hint {
    color: #9e9e9e;
    font-size: 0.9rem;
    margin-top: 8px;
}

/* Audio Upload Specific */
.audio-upload-zone {
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Image Upload Specific */
.image-upload-zone {
    min-height: 200px;
    display: flex;
    align-items: center;
    gap: 30px;
}

.image-upload-preview-area {
    width: 150px;
    height: 150px;
    border-radius: 8px;
    background: #2d2d2d;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.image-upload-preview-area img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-upload-content {
    flex: 1;
    text-align: left;
}

/* Upload Progress */
.upload-progress {
    margin-top: 20px;
    display: none;
}

.upload-progress.active {
    display: block;
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background: #2d2d2d;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #4CAF50, #66BB6A);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 3px;
}

.progress-text {
    font-size: 0.85rem;
    color: #9e9e9e;
    text-align: center;
}

/* Upload Success State */
.upload-success {
    display: none;
    background: #2d2d2d;
    border: 2px solid #4CAF50;
    border-radius: 12px;
    padding: 25px;
}

.upload-success.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.upload-success-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.upload-success-icon {
    font-size: 2rem;
    color: #4CAF50;
}

.upload-success-info {
    flex: 1;
}

.upload-filename {
    font-size: 1rem;
    font-weight: 600;
    color: #e0e0e0;
    margin-bottom: 5px;
}

.upload-meta {
    font-size: 0.85rem;
    color: #9e9e9e;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.upload-meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Audio Preview Player */
.audio-preview-player {
    margin-top: 15px;
    padding: 15px;
    background: #1a1a1a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.audio-preview-player audio {
    flex: 1;
    height: 40px;
}

/* Upload Actions */
.upload-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.upload-actions button {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-remove {
    background: #f44336;
    color: white;
}

.btn-remove:hover {
    background: #d32f2f;
}

.btn-preview {
    background: #2196F3;
    color: white;
}

.btn-preview:hover {
    background: #1976D2;
}

/* Upload Error State */
.upload-error {
    display: none;
    background: rgba(244, 67, 54, 0.1);
    border: 2px solid #f44336;
    border-radius: 12px;
    padding: 20px;
    margin-top: 15px;
}

.upload-error.active {
    display: block;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.upload-error-icon {
    font-size: 1.5rem;
    color: #f44336;
    margin-bottom: 10px;
}

.upload-error-message {
    color: #f44336;
    font-size: 0.95rem;
    font-weight: 500;
}

/* Waveform Visualization (Optional) */
.audio-waveform {
    width: 100%;
    height: 60px;
    background: #1a1a1a;
    border-radius: 8px;
    margin-top: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 0 10px;
}

.waveform-bar {
    width: 3px;
    background: #4CAF50;
    border-radius: 2px;
    transition: height 0.1s ease;
}

/* Loading Spinner */
.upload-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #404040;
    border-top-color: #4CAF50;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .image-upload-zone {
        flex-direction: column;
    }
    
    .image-upload-content {
        text-align: center;
    }
    
    .upload-meta {
        justify-content: center;
    }
}