:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --error-color: #dc2626;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;  
    --border-color: #e2e8f0;
    --border-focus: #3b82f6;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 40px 30px;
    text-align: center;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 12px;
    letter-spacing: -0.025em;
}

.header .subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

.header .features {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.feature-icon {
    width: 20px;
    height: 20px;
    color: var(--success-color);
}

.main-content {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.form-container {
    padding: 40px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    color: var(--text-primary);
    background: var(--surface-color);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.btn-primary {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-secondary:hover {
    background: #047857;
    transform: translateY(-1px);
}

.result-container {
    margin-top: 32px;
    padding: 24px;
    background: var(--background-color);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    display: none;
}

.audio-player {
    width: 100%;
    margin-bottom: 16px;
    border-radius: var(--radius-md);
}

.error-message {
    color: var(--error-color);
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 16px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-weight: 500;
}

.loading-container {
    text-align: center;
    padding: 32px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

.loading-text {
    color: var(--text-secondary);
    font-weight: 500;
}

.wechat-promotion {
    margin-top: 40px;
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.promotion-header {
    background: #f1f5f9;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.promotion-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.promotion-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.promotion-content {
    padding: 30px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    align-items: center;
}

.qr-code {
    width: 120px;
    height: 120px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.promotion-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.promotion-info p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.benefits-list li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    font-size: 1rem;
}

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

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

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* 输入方式选择优化样式 */
.input-method-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--background-color);
    padding: 4px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 20px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tab-btn:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.tab-btn .tab-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

.tab-btn:not(.active) .tab-icon {
    background: rgba(100, 116, 139, 0.1);
}

.file-upload-container {
    width: 100%;
}

.file-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, var(--background-color) 0%, rgba(248, 250, 252, 0.8) 100%);
    position: relative;
    overflow: hidden;
}

.file-drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.file-drop-zone:hover::before,
.file-drop-zone.dragover::before {
    opacity: 1;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
}

.file-drop-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}

.file-drop-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #3b82f6 100%);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: 8px;
    box-shadow: var(--shadow-md);
    position: relative;
}

.file-drop-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.file-drop-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    padding: 8px 16px;
    background: rgba(100, 116, 139, 0.1);
    border-radius: var(--radius-sm);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: linear-gradient(135deg, var(--surface-color) 0%, rgba(248, 250, 252, 0.5) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-top: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.file-info:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.file-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.file-name::before {
    content: '';
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 3px;
    opacity: 0.8;
    flex-shrink: 0;
}

.file-size {
    font-size: 0.8rem;
    color: var(--text-secondary);
    background: rgba(100, 116, 139, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
}

.file-remove-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--error-color);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
}

.file-remove-btn:hover {
    background: #b91c1c;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

/* 主功能切换器样式 */
.mode-switcher {
    max-width: 900px;
    margin: 0 auto 30px;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.mode-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 32px;
    border: 2px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    flex: 1;
    max-width: 250px;
}

.mode-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mode-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.mode-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 语音转录界面样式 */
.transcription-container {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.audio-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, var(--background-color) 0%, rgba(248, 250, 252, 0.8) 100%);
    position: relative;
    overflow: hidden;
}

.audio-upload-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.audio-upload-zone:hover::before,
.audio-upload-zone.dragover::before {
    opacity: 1;
}

.audio-upload-zone:hover,
.audio-upload-zone.dragover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
}

.token-config {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
}

.token-option {
    display: flex;
    align-items: center;
}

.token-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.token-label:hover {
    color: var(--text-primary);
}

.token-label input[type="radio"] {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    margin: 0;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.transcription-result {
    margin-top: 20px;
}

.result-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.result-actions .btn-secondary {
    flex: 1;
    min-width: 140px;
}

/* 顶部工具栏 */
.top-toolbar {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 语言切换器样式 */
.language-switcher {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.language-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 120px;
    display: none;
}

.language-dropdown.show {
    display: block;
}

.language-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: background-color 0.2s ease;
}

.language-option:hover {
    background: var(--background-color);
    color: var(--text-primary);
}

.language-option.active {
    background: var(--primary-color);
    color: white;
}

/* 滑块控制样式 */
.range-control {
    margin-top: 8px;
}

.control-value {
    float: right;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { 
        box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
    }
    50% { 
        box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
    }
}

.range-presets {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    justify-content: space-between;
}

.preset-btn {
    flex: 1;
    padding: 10px 8px;
    border: 2px solid var(--border-color);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.preset-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.preset-btn:hover::before {
    width: 100%;
    height: 100%;
}

.preset-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.preset-btn.active {
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.preset-btn.active::before {
    display: none;
}

.form-range {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, 
        #ef4444 0%, 
        #f59e0b 20%, 
        #10b981 40%, 
        #3b82f6 60%, 
        #8b5cf6 80%, 
        #ec4899 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    position: relative;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Chrome/Safari 滑块样式 */
.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4), 0 0 0 1px var(--border-color);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.5), 0 0 0 2px var(--primary-color);
}

.form-range::-webkit-slider-thumb:active {
    transform: scale(1.1);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.6), 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* Firefox 滑块样式 */
.form-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), #3b82f6);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4), 0 0 0 1px var(--border-color);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-range::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.5), 0 0 0 2px var(--primary-color);
}

.form-range::-moz-range-thumb:active {
    transform: scale(1.1);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.6), 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* Firefox 滑轨样式 */
.form-range::-moz-range-track {
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, 
        #ef4444 0%, 
        #f59e0b 20%, 
        #10b981 40%, 
        #3b82f6 60%, 
        #8b5cf6 80%, 
        #ec4899 100%);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.range-labels span {
    background: var(--background-color);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .container {
        padding: 16px;
    }
    
    .header {
        padding: 30px 20px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .form-container {
        padding: 24px;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .promotion-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 20px;
    }
    
    .qr-code {
        margin: 0 auto;
    }
    
    .input-method-tabs {
        gap: 2px;
        padding: 2px;
    }
    
    .tab-btn {
        padding: 12px 16px;
        font-size: 0.85rem;
        gap: 8px;
    }
    
    .tab-btn .tab-icon {
        width: 18px;
        height: 18px;
    }
    
    .file-drop-zone {
        padding: 32px 16px;
    }
    
    .file-drop-icon {
        width: 56px;
        height: 56px;
    }
    
    .file-info {
        padding: 16px;
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .file-remove-btn {
        align-self: flex-end;
    }
    
    /* 移动端模式切换器样式 */
    .mode-switcher {
        padding: 0 16px;
        margin-bottom: 20px;
        flex-direction: column;
        gap: 12px;
    }
    
    .mode-btn {
        max-width: none;
        padding: 14px 20px;
        font-size: 0.9rem;
        gap: 8px;
    }
    
    .mode-icon {
        width: 20px;
        height: 20px;
    }
    
    /* 移动端语音转录界面样式 */
    .audio-upload-zone {
        padding: 32px 16px;
    }
    
    .token-config {
        flex-direction: column;
        gap: 12px;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .result-actions .btn-secondary {
        min-width: auto;
    }
    
    /* 移动端滑块控制优化 */
    .range-presets {
        gap: 4px;
    }
    
    .preset-btn {
        padding: 8px 6px;
        font-size: 1rem;
    }
    
    .control-value {
        font-size: 0.7rem;
        padding: 3px 10px;
    }
    
    .form-range::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }
    
    .form-range::-moz-range-thumb {
        width: 20px;
        height: 20px;
    }
    
    .range-labels {
        font-size: 0.7rem;
    }
    
    .range-labels span {
        padding: 1px 6px;
    }
}

/* ========== Toast 通知样式 ========== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 350px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.95rem;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.success {
    background: linear-gradient(135deg, #059669, #10b981);
}

.toast.error {
    background: linear-gradient(135deg, #dc2626, #ef4444);
}

.toast.warning {
    background: linear-gradient(135deg, #d97706, #f59e0b);
}

.toast.info {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
}

.toast-icon {
    font-size: 1.2rem;
}

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

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

/* ========== 微信二维码弹窗 ========== */
.wechat-qrcode {
    position: relative;
    margin-right: 10px;
}

.wechat-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.wechat-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #07c160;
}

.wechat-btn svg {
    width: 22px;
    height: 22px;
}

.qrcode-popup {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 16px;
    display: none;
    z-index: 1000;
    text-align: center;
}

.qrcode-popup.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

.qrcode-content img {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-sm);
}

.qrcode-content p {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ========== 暗色模式 ========== */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #0f172a;
        --surface-color: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
        --border-focus: #60a5fa;
        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.2);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
    }

    body {
        background-color: var(--background-color);
    }

    .wechat-btn:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    .qrcode-popup {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    }

    .form-select,
    .form-textarea {
        background-color: var(--surface-color);
        color: var(--text-primary);
        border-color: var(--border-color);
    }

    .form-select:focus,
    .form-textarea:focus {
        border-color: var(--border-focus);
    }

    .mode-tab {
        color: var(--text-secondary);
    }

    .mode-tab.active {
        background: var(--primary-color);
        color: white;
    }

    .input-method-btn.active {
        background: var(--primary-color);
        color: white;
    }

    .file-upload-area {
        background: rgba(37, 99, 235, 0.1);
        border-color: var(--border-color);
    }

    .file-upload-area:hover {
        border-color: var(--primary-color);
        background: rgba(37, 99, 235, 0.15);
    }
}

/* ========== 暗色模式手动切换支持 ========== */
[data-theme="dark"] {
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --border-focus: #60a5fa;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.2);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
}

[data-theme="dark"] body {
    background-color: var(--background-color);
}

[data-theme="dark"] .wechat-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .qrcode-popup {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background-color: var(--surface-color);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .mode-tab {
    color: var(--text-secondary);
}

[data-theme="dark"] .mode-tab.active {
    background: var(--primary-color);
    color: white;
}

[data-theme="dark"] .input-method-btn.active {
    background: var(--primary-color);
    color: white;
}

[data-theme="dark"] .file-upload-area {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--border-color);
}

[data-theme="dark"] .file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.15);
}

/* 主题切换按钮 */
.theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    margin-right: 10px;
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-sun,
[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

.theme-toggle .icon-moon {
    display: block;
}

/* 移动端 Toast 适配 */
@media (max-width: 480px) {
    .toast-container {
        left: 10px;
        right: 10px;
        max-width: none;
    }
}

/* ========== 停顿语法帮助按钮 + 弹窗 ========== */

/* textarea label 行：让 label 和 ⓘ 按钮并排 */
.form-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.form-label-row .form-label {
    margin-bottom: 0;
}

/* 常驻 ⓘ 按钮（label 旁） */
.pause-help-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.78rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.pause-help-btn svg {
    flex-shrink: 0;
    opacity: 0.85;
}

.pause-help-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.08);
}

.pause-help-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 弹窗外层（fixed 全屏定位） */
.pause-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.pause-modal.show {
    display: flex !important;
    animation: fadeIn 0.18s ease;
}

.pause-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
}

.pause-modal__panel {
    position: relative;
    width: min(600px, calc(100vw - 32px));
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 28px 28px 22px;
    animation: pauseModalIn 0.22s cubic-bezier(.2,.8,.2,1.2);
}

@keyframes pauseModalIn {
    from { opacity: 0; transform: translateY(10px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0)    scale(1); }
}

.pause-modal__close {
    position: absolute;
    top: 8px;
    right: 12px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease;
}

.pause-modal__close:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary);
}

.pause-modal__header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding-right: 32px;
}

.pause-modal__icon {
    font-size: 1.4rem;
    line-height: 1;
}

.pause-modal__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.pause-modal__intro {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0 0 14px;
    line-height: 1.55;
}

.pause-modal__examples {
    list-style: none;
    padding: 0;
    margin: 0 0 14px;
    display: grid;
    gap: 8px;
}

.pause-modal__examples li {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.5;
}

.pause-modal__examples code {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    margin-right: 4px;
}

.pause-modal__example-box {
    background: var(--background-color);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    margin-bottom: 14px;
}

.pause-modal__example-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.pause-modal__example-code {
    display: block;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.5;
}

.pause-modal__limits {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0 0 18px;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.025);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    line-height: 1.5;
}

.pause-modal__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.pause-modal__dontshow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    user-select: none;
}

.pause-modal__dontshow input[type="checkbox"] {
    cursor: pointer;
    accent-color: var(--primary-color);
}

.pause-modal__ok {
    padding: 8px 22px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s ease, transform 0.15s ease;
}

.pause-modal__ok:hover {
    filter: brightness(1.08);
}

/* === 指令速查卡分组 === */
.marker-help-section {
    margin-bottom: 12px;
}

.marker-help-section__title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
    padding-bottom: 4px;
    border-bottom: 1px dashed var(--border-color);
}

.marker-help-section .pause-modal__examples {
    margin-bottom: 0;
}

.pause-modal__ok:active {
    transform: translateY(1px);
}

/* 暗色主题适配 */
[data-theme="dark"] .pause-help-btn:hover {
    background: rgba(96, 165, 250, 0.14);
}

[data-theme="dark"] .pause-modal__backdrop {
    background: rgba(0, 0, 0, 0.65);
}

[data-theme="dark"] .pause-modal__close:hover {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .pause-modal__examples code {
    background: rgba(96, 165, 250, 0.18);
    color: #93c5fd;
}

[data-theme="dark"] .pause-modal__limits {
    background: rgba(255, 255, 255, 0.04);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .pause-help-btn:hover {
        background: rgba(96, 165, 250, 0.14);
    }
    :root:not([data-theme="light"]) .pause-modal__backdrop {
        background: rgba(0, 0, 0, 0.65);
    }
    :root:not([data-theme="light"]) .pause-modal__close:hover {
        background: rgba(255, 255, 255, 0.08);
    }
    :root:not([data-theme="light"]) .pause-modal__examples code {
        background: rgba(96, 165, 250, 0.18);
        color: #93c5fd;
    }
    :root:not([data-theme="light"]) .pause-modal__limits {
        background: rgba(255, 255, 255, 0.04);
    }
}

/* 移动端适配 */
@media (max-width: 480px) {
    .pause-modal__panel {
        padding: 22px 18px 18px;
        border-radius: var(--radius-lg);
    }
    .pause-modal__title {
        font-size: 1.05rem;
    }
    .pause-modal__footer {
        flex-direction: column-reverse;
        align-items: stretch;
    }
    .pause-modal__ok {
        width: 100%;
    }
}

/* ========== 赞赏入口 / 赞赏码 ========== */

/* 顶栏文字入口（仅中文用户显示） */
.tip-trigger {
    position: relative;
}

.tip-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.82rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.tip-btn-emoji {
    font-size: 0.95rem;
    line-height: 1;
}

.tip-btn:hover {
    color: #b45309; /* 暖色（焦糖色），暗示"咖啡/请喝"语境 */
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.08);
}

.tip-btn:focus-visible {
    outline: 2px solid #f59e0b;
    outline-offset: 2px;
}

/* 顶栏赞赏码弹窗：复用 qrcode-popup 的定位/动画思路 */
.tip-popup {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 14px;
    display: none;
    z-index: 1000;
    text-align: center;
    min-width: 290px;
}

.tip-popup.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

.tip-popup-content img {
    width: 260px;
    height: auto;
    border-radius: var(--radius-sm);
    display: block;
    margin: 0 auto;
}

.tip-popup-content p {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 双二维码布局：微信 + 支付宝 */
.tip-qr-codes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: center;
}

.tip-qr-item {
    text-align: center;
}

.tip-qr-item img {
    width: 100%;
    max-width: 260px;
    height: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: #fff; /* QR 背景必须是白色保证可扫 */
    padding: 4px;
    display: block;
    margin: 0 auto;
}

.tip-qr-item p {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 成功面板内的赞赏区（横向：左文案，右 QR） */
.tip-section {
    border-top: 1px dashed var(--border-color);
    padding: 22px 30px 26px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.04), rgba(245, 158, 11, 0));
}

.tip-divider {
    /* 视觉上和 promotion-content 隔开，dashed border 已在 .tip-section 上 */
    display: none;
}

.tip-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
}

.tip-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.tip-emoji {
    font-size: 1.15rem;
}

.tip-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.55;
}

.tip-qr {
    text-align: center;
    flex-shrink: 0;
}

.tip-qr img {
    width: 220px;
    height: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: #fff; /* QR 背景必须是白色保证可扫 */
    padding: 4px;
    display: block;
}

.tip-qr-caption {
    margin: 6px 0 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 暗色主题适配 */
[data-theme="dark"] .tip-btn:hover {
    color: #fbbf24;
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.14);
}

[data-theme="dark"] .tip-popup {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .tip-section {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(245, 158, 11, 0));
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .tip-btn:hover {
        color: #fbbf24;
        border-color: #f59e0b;
        background: rgba(245, 158, 11, 0.14);
    }
    :root:not([data-theme="light"]) .tip-section {
        background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(245, 158, 11, 0));
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .tip-btn-text {
        display: none; /* 窄屏只剩 ☕ emoji，避免顶栏拥挤 */
    }
    .tip-btn {
        padding: 6px 10px;
    }
    .tip-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .tip-section {
        padding: 18px 20px 22px;
    }
    .tip-qr {
        margin: 0 auto;
    }
    .tip-popup {
        right: -8px; /* 防止贴边出屏 */
    }
}

@media (max-width: 480px) {
    .tip-popup {
        right: 0;
        left: auto;
        max-width: calc(100vw - 32px);
    }
    .tip-popup-content img {
        width: 220px;
    }
    .tip-qr-codes {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .tip-qr-item img {
        max-width: 220px;
    }
}