* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.control-panel {
    padding: 30px;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(245, 158, 11, 0.3);
}

.btn-secondary {
    background: #64748b;
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.status {
    margin-left: auto;
    padding: 10px 20px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid #10b981;
    font-weight: 500;
}

.folders-container {
    padding: 30px;
}

.folders-container h2 {
    color: #334155;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.folders-list {
    display: grid;
    gap: 20px;
}

.folder-item {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.folder-item:hover {
    border-color: #94a3b8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.folder-info {
    flex: 1;
}

.folder-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.folder-stats {
    display: flex;
    gap: 20px;
    color: #64748b;
    font-size: 0.9rem;
}

.progress-container {
    width: 200px;
    margin: 10px 0;
}

.progress-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress {
    flex: 1;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    font-weight: 600;
    color: #1e293b;
    min-width: 50px;
}

.folder-actions {
    display: flex;
    gap: 10px;
}

.no-folders {
    text-align: center;
    padding: 60px 20px;
    color: #64748b;
}

.no-folders i {
    font-size: 4rem;
    color: #10b981;
    margin-bottom: 20px;
}

.no-folders p {
    font-size: 1.2rem;
}

.api-info {
    padding: 30px;
    background: #f1f5f9;
    border-top: 1px solid #e2e8f0;
}

.api-info h3 {
    color: #334155;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.api-info code {
    background: #e2e8f0;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.api-info p {
    margin: 10px 0;
    color: #475569;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 20px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 20px;
    flex: 1;
    overflow-y: auto;
}

.progress-container {
    background: #f8fafc;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    position: relative;
}

.progress-bar {
    height: 10px;
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
    border-radius: 5px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    font-weight: 600;
    color: #1e293b;
}

.download-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.stat-item {
    background: #f8fafc;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.stat-label {
    display: block;
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
}

.stat-value.success {
    color: #10b981;
}

.stat-value.pending {
    color: #f59e0b;
}

.log-container {
    background: #f8fafc;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

.log-container h4 {
    color: #334155;
    margin-bottom: 10px;
}

.log-content {
    max-height: 200px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    color: #475569;
}

.log-entry {
    padding: 5px 0;
    border-bottom: 1px solid #e2e8f0;
}

.log-entry.success {
    color: #10b981;
}

.log-entry.error {
    color: #ef4444;
}

.log-entry.info {
    color: #3b82f6;
}

.modal-footer {
    padding: 20px;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    text-align: right;
}

@media (max-width: 768px) {
    .container {
        border-radius: 10px;
    }

    header {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    .control-panel {
        flex-direction: column;
        align-items: stretch;
    }

    .status {
        margin-left: 0;
        margin-top: 10px;
        text-align: center;
    }

    .folder-item {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }

    .folder-actions {
        justify-content: center;
    }

    .download-stats {
        grid-template-columns: 1fr;
    }
}