/* ============================================
   我的水印 - Glassmorphism Design System
   Based on UI/UX Pro Max recommendations
   ============================================ */

/* 导入 Inter 字体 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS 变量 - 玻璃拟态设计系统 */
:root {
    /* 主色调 - Teal */
    --primary: #0D9488;
    --primary-light: #14B8A6;
    --primary-dark: #0F766E;

    /* 强调色 - Orange CTA */
    --cta: #F97316;
    --cta-hover: #EA580C;

    /* 背景色 */
    --bg-gradient-start: #F0FDFA;
    --bg-gradient-end: #CCFBF1;
    --bg-accent: #5EEAD4;

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-bg-hover: rgba(255, 255, 255, 0.35);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --blur-amount: 20px;

    /* 文字颜色 */
    --text-primary: #134E4A;
    --text-secondary: #115E59;
    --text-muted: #5F9B97;
    --text-light: #FFFFFF;

    /* 间距和圆角 */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;

    /* 暗色模式变量占位 */
    --bg-body: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
}

/* 暗色模式 */
[data-theme="dark"] {
    --primary: #14B8A6;
    --primary-light: #2DD4BF;
    --primary-dark: #0D9488;

    --cta: #FB923C;
    --cta-hover: #F97316;

    --bg-gradient-start: #0F172A;
    --bg-gradient-end: #1E293B;
    --bg-accent: #134E4A;

    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-bg-hover: rgba(30, 41, 59, 0.85);
    --glass-border: rgba(71, 85, 105, 0.5);
    --glass-shadow: rgba(0, 0, 0, 0.3);

    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-light: #FFFFFF;
}

[data-theme="dark"] body {
    background:
        radial-gradient(circle at 20% 20%, rgba(13, 148, 136, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(20, 184, 166, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(249, 115, 22, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(circle at 30% 30%, rgba(20, 184, 166, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(249, 115, 22, 0.1) 0%, transparent 30%);
}

[data-theme="dark"] .image-wrapper {
    background: rgba(30, 41, 59, 0.5);
    border-color: var(--glass-border);
}

[data-theme="dark"] .method-options {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] select {
    background: rgba(30, 41, 59, 0.7);
    color: var(--text-primary);
}

[data-theme="dark"] .method-select select {
    background-color: rgba(30, 41, 59, 0.7);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2314B8A6' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="dark"] .form-group select {
    background-color: rgba(30, 41, 59, 0.7);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2314B8A6' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="dark"] .watermark-upload-area {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .watermark-tabs {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .watermark-tab:hover {
    background: rgba(71, 85, 105, 0.5);
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    min-height: 100vh;
    padding: 24px;
    position: relative;
    overflow-x: hidden;

    /* 渐变背景 + 装饰圆形 */
    background:
        radial-gradient(circle at 20% 20%, var(--bg-accent) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--primary-light) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(249, 115, 22, 0.15) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
}

/* 动态背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 30% 30%, rgba(20, 184, 166, 0.3) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(249, 115, 22, 0.2) 0%, transparent 30%);
    animation: bgFloat 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

/* 主容器 - 玻璃卡片 */
.container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow:
        0 8px 32px var(--glass-shadow),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    overflow: hidden;
}

/* 标题区域 */
h1 {
    font-weight: 600;
    text-align: center;
    color: var(--text-light);
    font-size: 1.75rem;
    letter-spacing: -0.025em;
    margin: 0;
    padding: 28px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

/* 标题光效 */
h1::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    50%, 100% { left: 100%; }
}

/* 标题图标 */
.title-icon {
    display: inline-block;
    margin: 0 8px;
    font-size: 1.5rem;
}

/* 副标题栏 */
.subtitle-bar {
    text-align: center;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid var(--glass-border);
}

.subtitle-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

/* 内容区域 */
.upload-section,
.preview-section {
    padding: 28px;
}

/* 上传区域 - 玻璃卡片 */
.upload-area {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px dashed var(--primary-light);
    border-radius: var(--radius-md);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.05) 0%, rgba(249, 115, 22, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--glass-bg-hover);
    transform: translateY(-2px);
    box-shadow:
        0 12px 40px rgba(13, 148, 136, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.upload-area:hover::before {
    opacity: 1;
}

.upload-area.dragover {
    border-color: var(--cta);
    background: rgba(249, 115, 22, 0.1);
}

/* 上传图标 */
.upload-icon-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.3);
    transition: transform var(--transition-normal);
}

.upload-area:hover .upload-icon-wrapper {
    transform: scale(1.05);
}

.upload-icon-wrapper svg {
    width: 32px;
    height: 32px;
    color: white;
}

.upload-prompt p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.upload-prompt span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 预览区域 */
.preview-section {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 图片容器 */
.image-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

/* 图片盒子 - 玻璃效果 */
.image-box {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
}

.image-box:hover {
    background: var(--glass-bg-hover);
    box-shadow: 0 8px 32px var(--glass-shadow);
}

.image-box h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.box-icon {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

/* 图片包装器 */
.image-wrapper {
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.image-wrapper img {
    max-width: 100%;
    max-height: 380px;
    object-fit: contain;
    border-radius: 8px;
}

.image-wrapper canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: crosshair;
}

/* 占位符 */
.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.placeholder-icon {
    width: 48px;
    height: 48px;
    color: var(--primary-light);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.95); }
}

/* 控制面板 - 玻璃效果 */
.controls {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

/* 控制面板头部 */
.controls-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--glass-border);
}

.controls-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.controls-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 方法选择器 */
.method-select {
    margin-bottom: 20px;
}

.method-select > label {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.label-icon {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.method-select select {
    width: 100%;
    padding: 14px 18px;
    font-family: inherit;
    font-size: 1rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%230D9488' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.method-select select:hover {
    border-color: var(--primary-light);
}

.method-select select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* 方法按钮组 */
.method-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.method-btn {
    flex: 1;
    min-width: calc(20% - 8px);
    max-width: calc(20% - 8px);
    padding: 12px 8px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--glass-bg-hover);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.method-btn:hover {
    color: var(--primary);
    border-color: var(--primary-light);
    background: rgba(13, 148, 136, 0.08);
}

.method-btn.active {
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

/* 小屏幕适配 */
@media (max-width: 768px) {
    .method-btn {
        min-width: calc(33.33% - 8px);
        max-width: calc(33.33% - 8px);
        padding: 10px 6px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .method-btn {
        min-width: calc(50% - 8px);
        max-width: calc(50% - 8px);
    }
}

/* 方法选项面板 */
.method-options {
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

.option-header {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-icon {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.method-options label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.method-options p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

/* 数值显示 */
.value-display {
    font-weight: 600;
    color: var(--primary);
    background: rgba(13, 148, 136, 0.1);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.95rem;
}

/* 滑块样式 */
.method-options input[type="range"] {
    width: 100%;
    height: 6px;
    margin: 12px 0;
    appearance: none;
    background: rgba(13, 148, 136, 0.2);
    border-radius: 3px;
    cursor: pointer;
}

.method-options input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.4);
    transition: transform var(--transition-fast);
}

.method-options input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* 滑块标签 */
.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 区域输入和颜色输入 */
.region-inputs, .color-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 14px;
}

.region-inputs label, .color-inputs label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0;
}

.coord-label, .color-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 24px;
}

.region-inputs input[type="number"] {
    width: 75px;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.95rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.6);
    transition: all var(--transition-fast);
}

.region-inputs input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.color-inputs input[type="color"] {
    width: 48px;
    height: 40px;
    padding: 3px;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
}

/* 操作按钮组 */
.action-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* 按钮基础样式 */
.btn {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex: 1;
    min-width: 140px;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* 主要按钮 - CTA Orange */
.btn.primary {
    background: linear-gradient(135deg, var(--cta) 0%, var(--cta-hover) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(249, 115, 22, 0.5);
}

.btn.primary:active {
    transform: translateY(0);
}

/* 下载按钮 - Primary Teal */
.btn.download:not(:disabled) {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(13, 148, 136, 0.4);
}

.btn.download:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(13, 148, 136, 0.5);
}

/* 重置按钮 */
.btn.reset {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn.reset:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}

/* 禁用状态 */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* 加载遮罩 - 玻璃效果 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(240, 253, 250, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 40px 60px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
}

/* 加载动画 */
.spinner {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    position: relative;
}

.spinner-cube {
    width: 100%;
    height: 100%;
    border: 3px solid rgba(13, 148, 136, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.loading-dots {
    display: flex;
    gap: 6px;
    margin-top: 12px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotPulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* 页脚 */
.footer {
    padding: 20px 28px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 768px) {
    body {
        padding: 16px;
    }

    .container {
        border-radius: var(--radius-md);
    }

    h1 {
        font-size: 1.4rem;
        padding: 24px 20px;
    }

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

    .subtitle-bar {
        padding: 12px 20px;
    }

    .upload-section,
    .preview-section {
        padding: 20px;
    }

    .upload-area {
        padding: 36px 20px;
    }

    .upload-icon-wrapper {
        width: 60px;
        height: 60px;
    }

    .upload-icon-wrapper svg {
        width: 28px;
        height: 28px;
    }

    /* 单列布局 */
    .image-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .image-wrapper {
        min-height: 180px;
    }

    .image-wrapper img {
        max-height: 280px;
    }

    .controls {
        padding: 20px;
    }

    .method-options {
        padding: 16px;
    }

    .region-inputs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .region-inputs input[type="number"] {
        width: 100%;
    }

    .action-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .btn {
        width: 100%;
        padding: 16px 24px;
    }
}

@media (max-width: 375px) {
    body {
        padding: 12px;
    }

    h1 {
        font-size: 1.25rem;
        padding: 20px 16px;
    }

    .upload-area {
        padding: 28px 16px;
    }

    .region-inputs {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   滚动条样式
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(13, 148, 136, 0.1);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 选中文字样式 */
::selection {
    background: rgba(13, 148, 136, 0.3);
    color: var(--text-primary);
}

/* ============================================
   水印功能样式
   ============================================ */

/* 水印类型标签页 */
.watermark-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    padding: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
}

.watermark-tab {
    flex: 1;
    min-width: 70px;
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.watermark-tab:hover {
    background: rgba(255, 255, 255, 0.4);
    color: var(--text-primary);
}

.watermark-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

/* 水印面板 */
.watermark-panel {
    padding: 16px 0;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 16px;
}

/* 通用选项区域 */
.watermark-common-options {
    padding-top: 8px;
}

/* 表单组 */
.form-group {
    margin-bottom: 16px;
}

.form-group > label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 表单行 - 多列布局 */
.form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 140px;
}

/* 文本输入框 */
.form-group input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.95rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.form-group input[type="text"]::placeholder {
    color: var(--text-muted);
}

/* 下拉选择框 */
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.95rem;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%230D9488' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* 数字输入框 */
.form-group input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.95rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.6);
    transition: all var(--transition-fast);
}

.form-group input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* 滑块样式 */
.form-group input[type="range"] {
    width: 100%;
    height: 6px;
    margin: 8px 0;
    appearance: none;
    background: rgba(13, 148, 136, 0.2);
    border-radius: 3px;
    cursor: pointer;
}

.form-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(13, 148, 136, 0.4);
    transition: transform var(--transition-fast);
}

.form-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

/* 颜色选择器 */
.form-group input[type="color"] {
    width: 48px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
}

/* 水印图片上传区域 */
.watermark-upload-area {
    background: rgba(255, 255, 255, 0.4);
    border: 2px dashed var(--primary-light);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.watermark-upload-area:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.5);
}

.watermark-upload-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
}

.watermark-upload-prompt svg {
    width: 40px;
    height: 40px;
    color: var(--primary-light);
}

.watermark-upload-prompt span {
    font-size: 0.9rem;
}

#watermarkPreview {
    max-width: 100%;
    max-height: 100px;
    object-fit: contain;
    border-radius: 8px;
}

/* 格式说明提示 */
.format-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
    font-style: italic;
    line-height: 1.5;
}

/* 自定义坐标 */
.custom-coords {
    display: flex;
    gap: 16px;
}

.custom-coords .form-group {
    flex: 1;
}

.custom-coords label {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ============================================
   Focus 状态（可访问性）
   ============================================ */

*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ============================================
   工具栏和主题切换
   ============================================ */

.toolbar {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 100;
    display: flex;
    gap: 8px;
}

.toolbar-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--glass-border);
}

.toolbar-btn:hover {
    background: var(--glass-bg-hover);
    transform: translateY(-2px);
}

.toolbar-btn svg {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

[data-theme="dark"] .theme-icon-light {
    display: none;
}

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

/* ============================================
   模式切换标签
   ============================================ */

.mode-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    margin: 20px 28px 0;
    background: var(--glass-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

.mode-tab {
    flex: 1;
    padding: 12px 20px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-tab:hover {
    background: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

.mode-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

[data-theme="dark"] .mode-tabs {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .mode-tab:hover {
    background: rgba(71, 85, 105, 0.5);
}

/* ============================================
   批量上传相关
   ============================================ */

.batch-upload {
    min-height: 160px;
}

.batch-preview-list {
    margin-top: 16px;
    padding: 16px;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.batch-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.batch-count {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.batch-count span {
    color: var(--primary);
    font-weight: 600;
}

.batch-clear-btn {
    padding: 6px 14px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--cta);
    background: rgba(249, 115, 22, 0.1);
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.batch-clear-btn:hover {
    background: rgba(249, 115, 22, 0.2);
}

.batch-thumbnails {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
}

.batch-thumbnail {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--glass-border);
    transition: all var(--transition-fast);
}

.batch-thumbnail:hover {
    border-color: var(--primary);
}

.batch-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.batch-thumbnail-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.batch-thumbnail:hover .batch-thumbnail-remove {
    opacity: 1;
}

/* ============================================
   输出设置
   ============================================ */

.output-options {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}

[data-theme="dark"] .output-options {
    background: rgba(30, 41, 59, 0.5);
}

.output-options .option-header {
    margin-bottom: 16px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ============================================
   水印模板功能
   ============================================ */

.template-section {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
}

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

.template-header label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.template-save-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    background: rgba(13, 148, 136, 0.1);
    border: 1px solid rgba(13, 148, 136, 0.3);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.template-save-btn:hover {
    background: rgba(13, 148, 136, 0.2);
}

.template-save-btn svg {
    width: 14px;
    height: 14px;
}

.template-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.template-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.template-item:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary-light);
}

.template-item-name {
    color: var(--text-primary);
    font-weight: 500;
}

.template-item-delete {
    width: 16px;
    height: 16px;
    border: none;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.2);
    color: #EF4444;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.template-item-delete:hover {
    background: rgba(239, 68, 68, 0.3);
}

.template-empty {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ============================================
   批量处理控制面板
   ============================================ */

.batch-controls {
    padding: 28px;
}

/* ============================================
   手动标记区域功能
   ============================================ */

.region-mode-select {
    margin-bottom: 20px;
}

.region-mode-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.region-mode-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.region-mode-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.region-mode-tab svg {
    width: 18px;
    height: 18px;
}

.region-mode-tab:hover {
    background: rgba(255, 255, 255, 0.5);
    border-color: var(--primary-light);
}

.region-mode-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

[data-theme="dark"] .region-mode-tab {
    background: rgba(30, 41, 59, 0.5);
}

[data-theme="dark"] .region-mode-tab:hover {
    background: rgba(71, 85, 105, 0.5);
}

.region-mode-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
    font-style: italic;
}

.region-marker-section {
    margin-top: 16px;
}

.region-marker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.region-marker-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.region-marker-progress {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(13, 148, 136, 0.1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
}

.region-marker-canvas-wrapper {
    position: relative;
    min-height: 250px;
    background: rgba(255, 255, 255, 0.4);
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .region-marker-canvas-wrapper {
    background: rgba(30, 41, 59, 0.4);
}

.region-marker-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
}

.region-marker-placeholder svg {
    width: 48px;
    height: 48px;
    color: var(--primary-light);
    opacity: 0.6;
}

.region-marker-placeholder span {
    font-size: 0.9rem;
}

#regionMarkerImage {
    max-width: 100%;
    max-height: 350px;
    object-fit: contain;
    display: block;
}

#regionMarkerCanvas {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: crosshair;
    touch-action: none;
}

.region-marker-toolbar {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 12px;
}

.marker-tool-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.marker-tool-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.02);
}

.marker-tool-btn.confirm {
    background: var(--primary);
}

.marker-tool-btn.confirm:hover {
    background: var(--primary-dark);
}

.marker-tool-btn svg {
    width: 18px;
    height: 18px;
}

.region-coords-display {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    justify-content: center;
}

.coord-chip {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.5);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
}

.coord-chip span {
    color: var(--primary);
    font-weight: 600;
}

[data-theme="dark"] .coord-chip {
    background: rgba(30, 41, 59, 0.5);
}

.region-nav-buttons {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    justify-content: center;
}

.btn-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-nav:hover:not(:disabled) {
    background: var(--glass-bg-hover);
    border-color: var(--primary-light);
}

.btn-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-nav svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   响应式补充
   ============================================ */

@media (max-width: 768px) {
    .toolbar {
        top: 8px;
        right: 8px;
    }

    .mode-tabs {
        margin: 16px 20px 0;
    }

    .batch-thumbnails {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .template-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}