:root {
    /* 主题色 */
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --success-color: #28a745;
    --success-light: #f8fff9;
    --success-lighter: #e6f7e9;
    --danger-color: #dc3545;
    --warning-color: #856404;
    --warning-bg: #fff3cd;
    --warning-border: #ffeaa7;
    
    /* 文本色 */
    --text-primary: #333;
    --text-secondary: #495057;
    --text-tertiary: #6c757d;
    --text-light: #ffffff;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-quaternary: #e7f3ff;
    
    /* 边框色 */
    --border-color: #ced4da;
    --border-light: #e9ecef;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 15px rgba(0, 0, 0, 0.3);
    
    /* 模态框背景 */
    --modal-backdrop: rgba(0, 0, 0, 0.5);
}

/* 暗黑模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
/* 主题色 - 暗色模式下保持一致 */
--primary-color: #007bff;
--primary-hover: #0056b3;
--success-color: #28a745;
--success-light: #1a2a21;
--success-lighter: #132c19;
--danger-color: #dc3545;
--warning-color: #ffd700;
--warning-bg: #4a4016;
--warning-border: #6b5c1e;

/* 文本色 - 暗色模式适配 */
--text-primary: #e9ecef;
--text-secondary: #adb5bd;
--text-tertiary: #868e96;
--text-light: #ffffff;

/* 背景色 - 暗色模式适配 */
--bg-primary: #1a1a1a;
--bg-secondary: #2d3436;
--bg-tertiary: #495057;
--bg-quaternary: #18202b;

/* 边框色 - 暗色模式适配 */
--border-color: #495057;
--border-light: #6c757d;

/* 阴影 - 暗色模式适配 */
--shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
--shadow-md: 0 2px 10px rgba(0, 0, 0, 0.4);
--shadow-lg: 0 5px 15px rgba(0, 0, 0, 0.5);

/* 模态框背景 */
--modal-backdrop: rgba(0, 0, 0, 0.7);
    }
}

/* 语言切换器样式 */
.language-switcher {
    position: relative;
    z-index: 1000;
}
.language-dropdown {
    position: relative;
    display: inline-block;
}
.lang-select {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 40px 8px 15px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 14px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='currentColor' class='bi bi-chevron-down' viewBox='0 0 16 16'%3E%3Cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    color: var(--text-primary);
}
.lang-select:hover {
    background-color: var(--bg-tertiary);
}
.lang-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}
.language-flag {
    margin-right: 6px;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.header-section h1 {
    margin: 0;
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--bg-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

h1 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 30px;
    font-size: 28px;
}

.steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    flex: 1;
    min-width: 120px;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 15px;
    right: -50%;
    width: 100%;
    height: 3px;
    background-color: var(--border-light);
    z-index: 0;
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.step.active .step-number {
    background-color: var(--success-color);
    color: var(--text-light);
}

.step.completed .step-number {
    background-color: var(--success-color);
    color: var(--text-light);
}

.step.completed:not(:last-child)::after {
    background-color: var(--success-color);
}

.step-text {
    margin-top: 8px;
    font-size: 14px;
    color: var(--text-tertiary);
    text-align: center;
}

.step.active .step-text,
.step.completed .step-text {
    color: var(--success-color);
    font-weight: 500;
}

.config-section {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}

select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

select:focus {
    outline: none;
    border-color: var(--success-color);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.25);
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    margin: 0;
    cursor: pointer;
}

.upload-section {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 40px 25px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 2px dashed var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.upload-section:hover {
    border-color: var(--success-color);
    background-color: var(--success-light);
}

.upload-section.dragover {
    border-color: var(--success-color);
    background-color: var(--success-lighter);
}

.upload-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.upload-subtext {
    font-size: 14px;
    color: var(--text-tertiary);
}

#file-input {
    display: none;
}

.file-info {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    text-align: left;
    width: 100%;
    display: none;
}

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-all;
}

.file-size {
    color: var(--text-tertiary);
    font-size: 14px;
    margin-top: 5px;
}

.progress-section {
    margin-top: 20px;
    display: none;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background-color: var(--success-color);
    width: 0%;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 12px;
    font-weight: 500;
}

.progress-text {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

.note-section {
    background-color: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 25px;
}

.note-icon {
    color: var(--warning-color);
    font-weight: bold;
    margin-right: 8px;
}

.note-text {
    color: var(--warning-color);
    font-size: 14px;
}

.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

.success-message {
    color: var(--success-color);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: var(--modal-backdrop);
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: modalFadeIn 0.3s ease;
    transition: background-color 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.close-button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.close-button:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.modal-body {
    margin-bottom: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border-light);
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-light);
}

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #6c757d;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.form-help {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 5px;
    font-style: italic;
}

.config-note {
    background-color: var(--bg-quaternary);
    border-left: 4px solid var(--primary-color);
    padding: 10px;
    margin: 10px 0;
    border-radius: 0 4px 4px 0;
    font-size: 13px;
    color: var(--text-secondary);
}

/* 响应式设计 - 增强版 */
@media (max-width: 768px) {
    .steps {
flex-direction: column;
align-items: center;
    }
    
    .step:not(:last-child)::after {
display: none;
    }
    
    .step {
flex-direction: row;
margin-bottom: 15px;
min-width: auto;
    }
    
    .step-text {
margin-top: 0;
margin-left: 15px;
text-align: left;
    }
    
    .container {
padding: 15px;
margin: 10px;
max-width: calc(100% - 20px);
    }
    
    h1 {
font-size: 24px;
    }
    
    .header-section {
flex-direction: column;
gap: 15px;
text-align: center;
    }
    
    .upload-section {
padding: 30px 15px;
min-height: 180px;
    }
    
    .modal-content {
margin: 20% auto;
width: 95%;
padding: 15px;
    }
}

/* 针对平板和小屏幕的额外响应式调整 */
@media (max-width: 1024px) {
    .container {
max-width: 90%;
    }
}

/* 针对大屏设备的优化 */
@media (min-width: 1200px) {
    .container {
max-width: 900px;
    }
}