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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.2em;
    margin-bottom: 8px;
}

header p {
    opacity: 0.9;
    font-size: 1.1em;
}

/* 通用区域样式 */
.upload-section, .progress-section, .logs-section, .result-section, .error-section {
    padding: 25px;
    border-bottom: 1px solid #eee;
}

/* 配置项样式 */
.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
}

/* 上传区域样式 */
.upload-area {
    border: 3px dashed #bdc3c7;
    border-radius: 10px;
    padding: 50px 30px;
    text-align: center;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #e3f2fd;
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.upload-text {
    font-size: 1.3em;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.upload-hint {
    color: #7f8c8d;
    margin-bottom: 20px;
}

/* 按钮样式 */
.upload-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* 进度条样式 */
.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.progress-header h3 {
    color: #2c3e50;
}

#progressText {
    font-weight: 600;
    color: #667eea;
}

progress {
    width: 100%;
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
}

progress::-webkit-progress-bar {
    background: #ecf0f1;
    border-radius: 6px;
}

progress::-webkit-progress-value {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 6px;
    transition: width 0.3s ease;
}

/* 日志区域样式 */
.logs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.logs-header h3 {
    color: #2c3e50;
}

.logs-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 15px;
    background: #f8f9fa;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.log-entry {
    padding: 5px 0;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: flex-start;
}

.log-entry:last-child {
    border-bottom: none;
}

.log-time {
    color: #7f8c8d;
    min-width: 120px;
    font-size: 12px;
}

.log-message {
    flex: 1;
    word-break: break-word;
}

.log-entry.info .log-message { color: #2c3e50; }
.log-entry.warning .log-message { color: #f39c12; }
.log-entry.error .log-message { color: #e74c3c; font-weight: 600; }
.log-entry.success .log-message { color: #27ae60; font-weight: 600; }

/* 结果区域样式 */
.result-section {
    max-height: 400px;
    overflow-y: auto;
}

.result-header h3 {
    color: #27ae60;
    margin-bottom: 15px;
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 10px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4);
}

/* 错误区域样式 */
.error-header h3 {
    color: #e74c3c;
    margin-bottom: 15px;
}

#errorContent {
    color: #e74c3c;
    font-size: 16px;
}

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* 响应式适配 */
@media (max-width: 768px) {
    body { padding: 10px; }
    .container { border-radius: 8px; }
    header { padding: 20px; }
    header h1 { font-size: 1.8em; }
    .upload-section, .progress-section, .logs-section, .result-section, .error-section { padding: 20px; }
    .upload-area { padding: 30px 20px; }
    .log-entry { flex-direction: column; }
    .log-time { min-width: auto; margin-bottom: 2px; }
}