/* ==========================================================================
   VoiceCraft Precision Design System (v3.0)
   Precision Audio Workbench · Cool Slate & Deep Cobalt Theme
   Strict 60-30-10 Palette · Clean Typography · Zero Gimmicks
   ========================================================================== */

:root {
    /* 色彩系统 - 严谨沉稳的精密钴蓝 (Deep Cobalt) 与冷中性石板灰 (Slate) */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-active: #1e40af;
    --primary-light: #eff6ff;
    --primary-border: #bfdbfe;

    --secondary-color: #475569;
    --success-color: #059669;
    --success-light: #ecfdf5;
    --warning-color: #d97706;
    --warning-light: #fffbeb;
    --error-color: #dc2626;
    --error-light: #fef2f2;
    --error-border: #fecaca;

    /* 表面与画布背景 (冷中性 Slate 族) */
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --surface-muted: #f1f5f9;
    --surface-hover: #f8fafc;
    --surface-active: #e2e8f0;

    /* 排版与边界层次 */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;

    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-focus: #2563eb;

    /* 阴影系统：克制、精密、无脏暗漫反射 */
    --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);

    /* 精密圆角体系：杜绝轻浮大药丸，回归工具严谨度 */
    --radius-sm: 5px;
    --radius-md: 7px;
    --radius-lg: 10px;
    --radius-xl: 12px;
    --radius-full: 9999px;

    /* 字体栈工程 (Font Stack Engineering) */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: 'JetBrains Mono', 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* 动画过渡 */
    --transition-fast: 0.12s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 暗色模式：深空碳晶黑与分层表面 (Dark Mode Elevation) ========== */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-active: #2563eb;
    --primary-light: rgba(59, 130, 246, 0.12);
    --primary-border: rgba(59, 130, 246, 0.28);

    --secondary-color: #94a3b8;
    --success-color: #10b981;
    --success-light: rgba(16, 185, 129, 0.12);
    --warning-color: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --error-color: #ef4444;
    --error-light: rgba(239, 68, 68, 0.12);
    --error-border: rgba(239, 68, 68, 0.25);

    --background-color: #090d16;
    --surface-color: #101623;
    --surface-muted: #172033;
    --surface-hover: #1e293b;
    --surface-active: #26354d;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    --border-focus: #3b82f6;

    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.35);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.45), 0 2px 4px -2px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --primary-color: #3b82f6;
        --primary-hover: #60a5fa;
        --primary-active: #2563eb;
        --primary-light: rgba(59, 130, 246, 0.12);
        --primary-border: rgba(59, 130, 246, 0.28);

        --secondary-color: #94a3b8;
        --success-color: #10b981;
        --success-light: rgba(16, 185, 129, 0.12);
        --warning-color: #f59e0b;
        --warning-light: rgba(245, 158, 11, 0.12);
        --error-color: #ef4444;
        --error-light: rgba(239, 68, 68, 0.12);
        --error-border: rgba(239, 68, 68, 0.25);

        --background-color: #090d16;
        --surface-color: #101623;
        --surface-muted: #172033;
        --surface-hover: #1e293b;
        --surface-active: #26354d;

        --text-primary: #f8fafc;
        --text-secondary: #94a3b8;
        --text-tertiary: #64748b;

        --border-color: rgba(255, 255, 255, 0.08);
        --border-hover: rgba(255, 255, 255, 0.16);
        --border-focus: #3b82f6;

        --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.35);
        --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.45), 0 2px 4px -2px rgba(0, 0, 0, 0.35);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
        --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    }
}

/* ========== 全局重置与排版基底 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--background-color);
    /* 彻底移除 3 层蓝粉紫弥散光斑，使用极其克制的高品质微网格底纹与纯色基底 */
    background-image: 
        linear-gradient(to right, rgba(148, 163, 184, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

[data-theme="dark"] body,
:root:not([data-theme="light"]) body {
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* ========== 顶部工具栏 (Top Toolbar) ========== */
.top-toolbar {
    max-width: 900px;
    margin: 0 auto;
    padding: 14px 16px 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    user-select: none;
    text-decoration: none;
}

.brand-logo-img {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    display: block;
    flex-shrink: 0;
}

.brand-title {
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-tag {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    background: var(--surface-muted);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-btn {
    height: 32px;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-xs);
    white-space: nowrap;
}

.toolbar-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--surface-hover);
}

.toolbar-btn:active {
    background: var(--surface-active);
}

.icon-svg {
    flex-shrink: 0;
}

.external-icon {
    opacity: 0.5;
    margin-left: -2px;
}

/* 主题切换图标显隐 */
.icon-sun {
    display: none;
}
.icon-moon {
    display: block;
}

[data-theme="dark"] .icon-sun,
:root:not([data-theme="light"]) .icon-sun {
    display: block;
}
[data-theme="dark"] .icon-moon,
:root:not([data-theme="light"]) .icon-moon {
    display: none;
}

/* 微信二维码与赞赏 Popup */
.wechat-qrcode, .tip-trigger {
    position: relative;
}

.qrcode-popup, .tip-popup {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    display: none;
    z-index: 1000;
    text-align: center;
}

.qrcode-popup.show, .tip-popup.show {
    display: block;
    animation: fadeInDown 0.15s ease-out;
}

.qrcode-content img, .tip-popup-content img {
    width: 220px;
    height: 220px;
    border-radius: var(--radius-sm);
    display: block;
    margin-bottom: 6px;
    object-fit: contain;
}

.qrcode-content p, .tip-popup-content p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* 语言下拉菜单 */
.language-switcher {
    position: relative;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 4px;
    min-width: 110px;
    display: none;
    z-index: 1000;
}

.language-dropdown.show {
    display: block;
    animation: fadeInDown 0.15s ease-out;
}

.language-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.language-option.active {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 500;
}

/* ========== 主容器与精简 Header ========== */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 8px 16px 48px;
}

.header {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    border: 1px solid var(--border-color);
    padding: 20px 24px 18px;
    text-align: center;
    margin-bottom: 12px;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-brand-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 4px;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    line-height: 1.25;
}

.header .subtitle {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-weight: 400;
}

/* 顶部特性徽章：收敛为微型元数据标签，移除营销感 */
.header .features {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.feature-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    font-size: 0.6875rem;
    font-weight: 500;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
}

/* ========== 核心模式切换 (Segmented Control) ========== */
.mode-switcher {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
    background: var(--surface-muted);
    padding: 3px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.mode-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.mode-btn.active {
    background: var(--surface-color);
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: var(--shadow-xs);
}

.mode-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ========== 主操作卡片容器与表单 ========== */
.main-content, .transcription-container {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 16px;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.form-container {
    padding: 24px;
}

.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.8125rem;
    letter-spacing: -0.01em;
}

.form-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

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

/* 指令速查帮助按钮 */
.pause-help-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--surface-muted);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 2px 7px;
    font-size: 0.6875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pause-help-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-border);
    background: var(--primary-light);
}

/* 输入方式选项卡 (Input Method Tabs) */
.input-method-tabs {
    display: flex;
    gap: 4px;
    background: var(--surface-muted);
    padding: 3px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.tab-btn.active {
    background: var(--surface-color);
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: var(--shadow-xs);
}

.tab-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 表单输入控件 (Input / Select / Textarea) */
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--surface-color);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1.5;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-textarea {
    min-height: 130px;
    resize: vertical;
}

.ssml-editor {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
    background: var(--surface-muted);
}

.ssml-hint-text {
    margin-top: 6px;
    font-size: 0.6875rem;
    color: var(--text-tertiary);
}

/* 文件上传区域 */
.file-upload-container {
    width: 100%;
}

.file-drop-zone {
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    text-align: center;
    background: var(--surface-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-drop-zone:hover, .file-drop-zone.dragover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.file-drop-icon {
    color: var(--text-tertiary);
    margin-bottom: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.file-drop-text {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.file-drop-hint {
    font-size: 0.6875rem;
    color: var(--text-tertiary);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: 8px;
}

.file-details {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
}

.file-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-tertiary);
}

.file-remove-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 0.8125rem;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast);
}

.file-remove-btn:hover {
    color: var(--error-color);
}

/* ========== 控制面板网格与声学滑块 (Controls Grid) ========== */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

/* 等宽防抖数字指标 */
.control-value {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    float: right;
}

.range-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.range-presets {
    display: flex;
    gap: 4px;
}

.preset-btn {
    flex: 1;
    padding: 4px 2px;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.6875rem;
    font-weight: 500;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.preset-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--surface-hover);
}

.preset-btn.active {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    font-weight: 600;
}

/* 精密滑动条轨道与滑块 */
.form-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--border-color);
    outline: none;
    margin: 6px 0;
    cursor: pointer;
}

.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-xs);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.form-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-xs);
    cursor: pointer;
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.625rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

/* ========== 按钮系统 (纯色高级手感 · 拒绝刺眼大发光) ========== */
.btn-primary {
    width: 100%;
    background: var(--primary-color);
    color: #ffffff;
    border: 1px solid transparent;
    padding: 11px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: inset 0 1px 0 0 rgba(255, 255, 255, 0.16), var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-primary:active:not(:disabled) {
    background: var(--primary-active);
    transform: translateY(1px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 14px;
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--surface-muted);
    border-color: var(--border-hover);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ========== 结果输出容器 ========== */
.result-container {
    margin-top: 20px;
    padding: 16px;
    background: var(--surface-muted);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    display: none;
}

.audio-player {
    width: 100%;
    margin-bottom: 10px;
    border-radius: var(--radius-sm);
}

.error-message {
    color: var(--error-color);
    background: var(--error-light);
    border: 1px solid var(--error-border);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    margin-top: 10px;
    font-size: 0.8125rem;
}

.loading-container {
    text-align: center;
    padding: 20px 16px;
}

.loading-spinner, .animate-spin {
    animation: spin 0.8s linear infinite;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 10px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.progress-info {
    margin-top: 6px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    color: var(--text-tertiary);
}

.token-config {
    display: flex;
    gap: 14px;
    margin-bottom: 10px;
}

.token-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.result-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}

/* ========== 微信推广与赞赏展示区 (保留 220px 优质扫码框) ========== */
.wechat-promotion {
    margin-top: 16px;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.promotion-header {
    background: var(--surface-muted);
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
}

.promotion-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.promotion-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.promotion-content {
    display: flex;
    padding: 20px;
    gap: 24px;
    align-items: center;
}

.qr-code {
    width: 180px;
    height: 180px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: #ffffff;
    padding: 6px;
    box-shadow: var(--shadow-xs);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-sm);
    display: block;
    object-fit: contain;
}

.promotion-info h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.promotion-info p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.5;
}

.benefits-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
}

.benefits-list li {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.benefits-list li::before {
    content: "•";
    color: var(--primary-color);
    font-size: 1.1rem;
    line-height: 1;
}

.tip-section {
    border-top: 1px solid var(--border-color);
    padding: 16px 20px;
    background: var(--surface-muted);
}

.tip-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.tip-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}

.tip-icon {
    color: #d97706;
}

.tip-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

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

.tip-qr img {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-md);
    background: #ffffff;
    border: 1px solid var(--border-color);
    display: block;
    padding: 6px;
    box-shadow: var(--shadow-xs);
    object-fit: contain;
}

.tip-qr-caption {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

/* ========== 免责声明与开源自建卡片 ========== */
.app-disclaimer-card {
    margin-top: 16px;
    padding: 16px 20px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.disclaimer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.disclaimer-title-wrap {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}

.disclaimer-icon {
    color: var(--primary-color);
    flex-shrink: 0;
}

.disclaimer-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.disclaimer-repo-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.6875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.disclaimer-repo-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-border);
    background: var(--primary-light);
}

.disclaimer-text {
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

/* ========== 指令帮助弹窗样式 (Pause Modal) ========== */
.pause-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.pause-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
}

.pause-modal__panel {
    position: relative;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 560px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 24px;
    z-index: 1;
}

.pause-modal__close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.pause-modal__close:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.pause-modal__header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.pause-modal__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.pause-modal__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.pause-modal__intro {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px;
}

.marker-help-section {
    margin-bottom: 12px;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
}

.marker-help-section__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.pause-modal__examples {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.pause-modal__examples li {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.pause-modal__examples code, .pause-modal__intro code {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: 2px 5px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--primary-color);
    font-weight: 500;
}

.pause-modal__example-box {
    margin: 14px 0;
    padding: 10px 14px;
    background: var(--surface-muted);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--radius-sm);
}

.pause-modal__example-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3px;
}

.pause-modal__example-code {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-primary);
    word-break: break-all;
}

.pause-modal__limits {
    font-size: 0.6875rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.pause-modal__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.pause-modal__dontshow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.pause-modal__ok {
    padding: 6px 16px;
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.pause-modal__ok:hover {
    background: var(--primary-hover);
}

/* ========== 动效与动画 ========== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 响应式与移动端适配 ========== */
@media (max-width: 768px) {
    .top-toolbar {
        padding: 10px 14px 6px;
    }

    .brand-title {
        font-size: 0.875rem;
    }

    .brand-tag {
        display: none;
    }

    .toolbar-actions {
        gap: 5px;
    }

    .toolbar-btn {
        width: 32px;
        min-width: 32px;
        height: 32px;
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-md);
    }

    /* 移动端彻底隐藏所有顶栏按钮文字与附属图标，保持统一纯图标尺寸 */
    .toolbar-btn-text,
    .tip-btn-text,
    #currentLangName,
    .external-icon,
    .chevron-icon {
        display: none !important;
    }

    .container {
        padding: 6px 12px 32px;
    }

    .header {
        padding: 16px 16px 14px;
    }

    .header h1 {
        font-size: 1.25rem;
    }

    .form-container {
        padding: 16px;
    }

    .controls-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .promotion-content, .tip-content {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .qr-code, .tip-qr img {
        width: 160px;
        height: 160px;
    }

    .benefits-list {
        justify-items: center;
    }

    .benefits-list li {
        justify-content: center;
    }
}

#captionBtn {
    margin-top: 10px;
}