/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

h2 {
    color: #34495e;
    margin-bottom: 20px;
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.auth-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 90%;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #4a5568;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #4299e1;
}

.form-actions {
    text-align: center;
}

/* 上传区域样式 */
.upload-section {
    background: white;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.drop-zone {
    border: 2px dashed #cbd5e0;
    border-radius: 8px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.drop-zone:hover {
    border-color: #4299e1;
    background-color: #f7fafc;
}

.drop-zone.drag-over {
    border-color: #4299e1;
    background-color: #e6f3ff;
}

.drop-zone-content {
    pointer-events: none;
}

.upload-icon {
    width: 60px;
    height: 60px;
    color: #718096;
    margin-bottom: 20px;
}

.drop-zone p {
    color: #4a5568;
    font-size: 18px;
    margin-bottom: 10px;
}

.sub-text {
    font-size: 14px;
    color: #718096;
}

.select-btn {
    background-color: #4299e1;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
    pointer-events: auto; /* 确保按钮可以接收鼠标事件 */
}

.select-btn:hover {
    background-color: #3182ce;
}

/* 上传进度样式 */
.upload-progress {
    margin-top: 20px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
    color: #4a5568;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: #48bb78;
    transition: width 0.3s ease;
    width: 0%;
}

/* 视频列表样式 */
.video-section {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.video-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.video-item {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 15px;
    transition: box-shadow 0.3s ease;
}

.video-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.video-info {
    margin-bottom: 15px;
}

.video-name {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 5px;
    word-break: break-all;
}

.video-meta {
    font-size: 14px;
    color: #718096;
}

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

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: #4299e1;
    color: white;
}

.btn-primary:hover {
    background-color: #3182ce;
}

.btn-success {
    background-color: #48bb78;
    color: white;
}

.btn-success:hover {
    background-color: #38a169;
}

.btn-danger {
    background-color: #f56565;
    color: white;
}

.btn-danger:hover {
    background-color: #e53e3e;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #718096;
}

.empty-state svg {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    opacity: 0.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .upload-section, .video-section {
        padding: 20px;
    }
    
    .drop-zone {
        padding: 40px 20px;
    }
    
    .video-list {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4299e1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 提示消息 */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #2d3748;
    color: white;
    padding: 16px 24px;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast.success {
    background-color: #48bb78;
}

.toast.error {
    background-color: #f56565;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}