/* ========================================
   木目工具箱 - 公共样式
   ======================================== */

/* --- CSS Variables --- */
:root {
    --color-primary: #4CAF50;
    --color-primary-dark: #388E3C;
    --color-primary-light: #C8E6C9;
    --color-primary-bg: #E8F5E9;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    --color-bg: #F5F7FA;
    --color-white: #FFFFFF;
    --color-border: #E0E0E0;
    --color-border-light: #F0F0F0;
    --color-danger: #E53935;
    --color-success: #43A047;
    --color-warning: #FB8C00;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --max-width: 1100px;
    --header-height: 64px;
    --transition: 0.25s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4 {
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2rem; margin-bottom: 0.75rem; }
h2 { font-size: 1.5rem; margin-bottom: 0.6rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }

/* 工具页 h1 统一样式（与 AI抠图 一致：大号、加粗、深色） */
.tool-page-h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

/* --- Header --- */
.site-header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

/* 与 logo 对齐的通用内容区（header、面包屑共用，保证左对齐） */
.site-content-width {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    box-sizing: border-box;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1.25rem;
}

.site-logo:hover {
    text-decoration: none;
    color: var(--color-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    text-decoration: none;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* --- Breadcrumb（外层全宽，内层 .breadcrumb 用与 header 相同的宽度约束） --- */
.breadcrumb-wrap:empty {
    display: none;
}

.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem 0;
    box-sizing: border-box;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.breadcrumb-list li::after {
    content: " › ";
    margin-left: 0.35rem;
    margin-right: 0.35rem;
    color: var(--color-text);
    font-weight: 600;
    opacity: 0.9;
}

.breadcrumb-list li:last-child::after {
    content: "";
    margin-left: 0;
}

.breadcrumb-list a {
    color: var(--color-text-secondary);
}

.breadcrumb-list a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb-list .current {
    color: var(--color-text);
    font-weight: 500;
}

/* --- Main Content --- */
.site-main {
    flex: 1;
    padding: 2rem 0;
}

.main-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Content Card --- */
.content-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

/* --- Hero Section (Home) --- */
.hero-section {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-white) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
}

.hero-section h1 {
    font-size: 2.25rem;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.hero-section .hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* --- Tool Cards Grid --- */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.tool-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border-light);
}

.tool-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-primary-light);
}

.tool-card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tool-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.tool-card h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.tool-card h3 a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.tool-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    flex: 1;
    margin-bottom: 1rem;
}

.tool-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-primary-dark);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
}

.tool-card .card-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.tool-card .card-link::after {
    content: "\2192";
}

/* --- Coming Soon Card --- */
.coming-soon-card {
    background: var(--color-bg);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
    color: var(--color-text-light);
}

.coming-soon-card .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* --- Section --- */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.5;
}

.btn:hover {
    text-decoration: none;
}

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

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

.btn-success {
    background: var(--color-success);
    color: var(--color-white);
}

.btn-success:hover {
    background: #388E3C;
    color: var(--color-white);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
    color: var(--color-text);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color var(--transition);
    background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.15);
}

.form-group .helptext {
    display: block;
    font-size: 0.825rem;
    color: var(--color-text-light);
    margin-top: 0.3rem;
}

/* --- Alerts --- */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.alert-success {
    background: var(--color-primary-bg);
    color: #1B5E20;
    border: 1px solid var(--color-primary-light);
}

.alert-error {
    background: #FFEBEE;
    color: #B71C1C;
    border: 1px solid #FFCDD2;
}

/* --- Result Section --- */
.result-section {
    background: var(--color-primary-bg);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.result-section h3 {
    color: var(--color-primary-dark);
    margin-bottom: 1rem;
}

.result-preview {
    max-height: 300px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    border: 1px solid var(--color-border-light);
}

.result-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

/* --- Steps / Tutorial --- */
.steps-list {
    counter-reset: step;
}

.steps-list li {
    counter-increment: step;
    padding: 1rem 1rem 1rem 3.5rem;
    position: relative;
    margin-bottom: 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary);
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 1rem;
    top: 1rem;
    width: 1.75rem;
    height: 1.75rem;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
}

/* --- Features List --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* --- FAQ Accordion --- */
.faq-list {
    margin-top: 1rem;
}

.faq-item {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: var(--color-white);
    border: none;
    padding: 1rem 2.5rem 1rem 1rem;
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    color: var(--color-text);
    font-family: inherit;
    line-height: 1.5;
    transition: background var(--transition);
}

.faq-question:hover {
    background: var(--color-bg);
}

.faq-question::after {
    content: "+";
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-primary);
    transition: transform var(--transition);
}

.faq-item.open .faq-question::after {
    content: "\2212";
}

.faq-answer {
    display: none;
    padding: 0 1rem 1rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    display: block;
}

/* --- Mini-program Section (About Page) --- */
.miniprogram-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.miniprogram-section h2 {
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.miniprogram-intro {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.miniprogram-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.miniprogram-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    text-align: center;
}

.miniprogram-qr {
    margin-bottom: 1rem;
}

.miniprogram-qr img {
    display: block;
    border-radius: 8px;
}

.miniprogram-content h3 {
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.miniprogram-content p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 0.5rem;
}

.miniprogram-cta {
    color: var(--color-primary);
    font-weight: 500;
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

/* --- About Page --- */
.about-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.info-block {
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.info-block h3 {
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
}

.info-block p,
.info-block li {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.info-block ul {
    padding-left: 1.25rem;
    list-style: disc;
}

.info-block ul li {
    margin-bottom: 0.35rem;
}

/* --- Tool List (reusable in about/footer) --- */
.tool-list-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.75rem;
}

.tool-list-inline a {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    border-radius: 20px;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition);
}

.tool-list-inline a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
}

/* --- Footer --- */
.site-footer {
    background: var(--color-text);
    color: rgba(255,255,255,0.85);
    margin-top: auto;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2.5rem 1.5rem 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-title {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.65);
    margin-bottom: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.footer-links a {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.25rem;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.footer-bottom p {
    margin-bottom: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-list {
        display: none !important;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border-light);
    }

    .nav-list.nav-open {
        display: flex !important;
    }

    .nav-link {
        padding: 0.75rem 1rem;
    }

    .hero-section {
        padding: 2rem 1rem;
    }

    .hero-section h1 {
        font-size: 1.6rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-info {
        grid-template-columns: 1fr;
    }

    .miniprogram-cards {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.3rem; }

    .content-card {
        padding: 1.25rem;
    }
}

@media (max-width: 480px) {
    .main-container {
        padding: 0 1rem;
    }

    .header-container {
        padding: 0 1rem;
    }

    .hero-section h1 {
        font-size: 1.4rem;
    }
}

/* --- Compress Tool Layout --- */
.compress-layout {
    margin-top: 1rem;
}

.compress-form-area {
    width: 100%;
}

/* --- Upload Dropzone --- */
.upload-dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--color-bg);
    position: relative;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.upload-dropzone input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.dropzone-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.5rem;
}

.dropzone-text {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.dropzone-hint {
    font-size: 0.825rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* 图片压缩页：移动端上传区优化 */
@media (max-width: 600px) {
    .compress-form-area .upload-dropzone {
        padding: 1.5rem 1rem;
    }
    .compress-form-area .form-group {
        margin-bottom: 1rem;
    }
}

.dropzone-batch-hint {
    margin-top: 0.25rem;
}

.dropzone-queue-hint {
    margin-top: 0.25rem;
    color: var(--color-text-light);
}

/* 上传后原图预览 */
.dropzone-preview {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: var(--color-bg);
}

.dropzone-preview-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* --- File List --- */
.file-list {
    margin-top: 0.75rem;
}

.file-list-header {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border-light);
}

.file-list-items {
    max-height: 200px;
    overflow-y: auto;
    list-style: none;
}

.file-list-items li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--color-border-light);
}

.file-list-items .file-name {
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70%;
}

.file-list-items .file-size {
    color: var(--color-text-light);
    flex-shrink: 0;
}

.file-list-footer {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    padding: 0.5rem 0;
    font-weight: 500;
}

/* --- Params Grid --- */
.params-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 1rem;
}

/* 移动端：参数区单列，横向铺满 */
@media (max-width: 600px) {
    .params-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

/* --- Results Table --- */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.result-header h3 {
    margin-bottom: 0;
}

.results-table-wrapper {
    overflow-x: auto;
    margin-bottom: 1rem;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.results-table th,
.results-table td {
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.results-table th {
    background: rgba(76, 175, 80, 0.08);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.85rem;
    white-space: nowrap;
}

.results-table tbody tr:hover {
    background: rgba(76, 175, 80, 0.04);
}

.filename-cell {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ratio-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.ratio-high {
    background: #E8F5E9;
    color: #2E7D32;
}

.ratio-mid {
    background: #FFF3E0;
    color: #E65100;
}

.ratio-low {
    background: #FFEBEE;
    color: #C62828;
}

/* --- Buttons Extra --- */
.btn-sm {
    padding: 0.45rem 1rem;
    font-size: 0.875rem;
}

.btn-xs {
    padding: 0.3rem 0.65rem;
    font-size: 0.8rem;
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-white);
}

.btn-danger:hover {
    background: #C62828;
    color: var(--color-white);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
}

/* --- Loading Spinner --- */
.btn-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 0.5rem;
}

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

/* --- Cleanup Section --- */
.cleanup-section {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.cleanup-hint {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
    flex: 1;
    min-width: 200px;
}

/* --- Field Errors --- */
.field-errors {
    margin-top: 0.5rem;
}

.field-errors .helptext {
    display: block;
    margin-bottom: 0.25rem;
}

.text-danger {
    color: var(--color-danger);
}

/* --- Result errors --- */
.result-errors {
    background: #FFF3E0;
    border: 1px solid #FFE0B2;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cleanup-section {
        flex-direction: column;
        align-items: flex-start;
    }

    .results-table {
        font-size: 0.8rem;
    }

    .results-table th,
    .results-table td {
        padding: 0.5rem;
    }

    .filename-cell {
        max-width: 120px;
    }
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-secondary); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ============================================
   Watermark Tool Styles
   ============================================ */

/* Layout */
.watermark-layout {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.watermark-form-area {
    width: 100%;
}

/* Watermark Type Tabs */
.wm-type-tabs {
    display: flex;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.wm-type-tab {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.wm-type-tab:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.wm-type-tab.active {
    background: var(--color-primary);
    color: #fff;
}

.wm-type-tab + .wm-type-tab {
    border-left: 1px solid var(--color-border);
}

/* Params Section */
.wm-params-section {
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.params-section-title {
    margin: 0 0 1rem 0;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

/* Color Input */
.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.color-input-wrapper input[type="color"] {
    width: 48px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    background: none;
}

.color-value {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-family: monospace;
}

/* Range Input with linked number */
.range-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.range-input-wrapper .range-input {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-border);
    border-radius: 3px;
    outline: none;
}

.range-input-wrapper .range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.range-input-wrapper .range-input::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.range-input-wrapper input[type="number"] {
    width: 70px;
    text-align: center;
}

.range-value {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    min-width: 45px;
    text-align: right;
    font-weight: 500;
}

/* Watermark Image Upload Area */
.wm-image-upload {
    padding: 1rem;
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.wm-image-upload:hover {
    border-color: var(--color-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .wm-type-tabs {
        flex-direction: column;
    }

    .wm-type-tab + .wm-type-tab {
        border-left: none;
        border-top: 1px solid var(--color-border);
    }

    .range-input-wrapper {
        flex-wrap: wrap;
    }

    .range-input-wrapper .range-input {
        width: 100%;
        flex: none;
    }

    .color-input-wrapper {
        flex-wrap: wrap;
    }
}

/* ============================================
   Image Cropper Tool Styles
   ============================================ */

.cropper-layout {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* -- Ratio Bar -- */
.cropper-ratio-bar,
.cropper-social-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.cropper-social-bar {
    padding: 0.6rem 1rem;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.04), rgba(76, 175, 80, 0.01));
}

.ratio-bar-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.ratio-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.ratio-btn {
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: var(--color-white);
    color: var(--color-text-secondary);
    font-size: 0.825rem;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-weight: 500;
}

.ratio-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-bg);
    box-shadow: 0 1px 4px rgba(76, 175, 80, 0.15);
}

.ratio-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.social-btn {
    font-size: 0.8rem;
    padding: 0.35rem 0.7rem;
    border-style: dashed;
}

.social-btn.active {
    border-style: solid;
}

/* -- Cropper Main Area -- */
.cropper-main {
    display: flex;
    gap: 1.5rem;
}

.cropper-canvas-wrap {
    flex: 1;
    min-height: 320px;
    max-height: 520px;
    background: #f0f0f0;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
}

.cropper-canvas-wrap img {
    display: block;
    max-width: 100%;
}

/* -- Sidebar / Preview -- */
.cropper-sidebar {
    width: 210px;
    flex-shrink: 0;
}

.preview-section h4 {
    font-size: 0.875rem;
    margin-bottom: 0.6rem;
    color: var(--color-text);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.crop-preview-box {
    width: 210px;
    height: 210px;
    overflow: hidden;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: repeating-conic-gradient(#eee 0% 25%, #fff 0% 50%) 0 0 / 14px 14px;
    margin-bottom: 0.6rem;
    box-shadow: var(--shadow-sm);
    transition: border-radius var(--transition);
}

.crop-preview {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Preview shape variants */
.crop-preview-box.preview-corner-round .crop-preview {
    border-radius: var(--preview-round-pct, 15%);
    overflow: hidden;
}

.crop-preview-box.preview-corner-circle,
.crop-preview-box.preview-corner-circle .crop-preview {
    border-radius: 50%;
    overflow: hidden;
}

.crop-preview-box.preview-corner-star .crop-preview {
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

.crop-preview-box.preview-corner-ellipse {
    border-radius: 50%;
    overflow: hidden;
    /* width/height set dynamically via JS to match crop aspect ratio */
}
.crop-preview-box.preview-corner-ellipse .crop-preview {
    border-radius: 50%;
    overflow: hidden;
    width: 100% !important;
    height: 100% !important;
}

.crop-info {
    text-align: center;
    font-size: 0.825rem;
    color: var(--color-text-secondary);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
    font-weight: 500;
}

/* -- Toolbar -- */
.cropper-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.85rem 1.15rem;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    align-items: center;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
    padding-right: 0.75rem;
    border-right: 1px solid var(--color-border-light);
}

.toolbar-group:last-child {
    padding-right: 0;
    border-right: none;
}

.toolbar-label {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    margin-right: 0.15rem;
}

.tool-btn {
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 0.825rem;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-weight: 500;
}

.tool-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-bg);
    box-shadow: 0 1px 4px rgba(76, 175, 80, 0.12);
}

.tool-btn:active {
    transform: scale(0.96);
}

.rotate-slider-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rotate-slider-wrap .range-input {
    width: 120px;
}

/* -- Options Panel -- */
.cropper-options {
    padding: 1.15rem 1.25rem;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.options-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.85rem;
}

.options-row:last-child {
    margin-bottom: 0;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.option-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.corner-buttons,
.format-buttons {
    display: flex;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.corner-btn,
.format-btn {
    padding: 0.45rem 0.85rem;
    border: none;
    background: var(--color-white);
    color: var(--color-text-secondary);
    font-size: 0.825rem;
    cursor: pointer;
    transition: all var(--transition);
    border-right: 1px solid var(--color-border);
    white-space: nowrap;
    font-weight: 500;
}

.corner-btn:last-child,
.format-btn:last-child {
    border-right: none;
}

.corner-btn:hover,
.format-btn:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.corner-btn.active,
.format-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

/* -- Mode Tabs (crop / grid toggle) -- */
.cropper-mode-tabs {
    display: inline-flex;
    gap: 0;
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-white);
}

.mode-tab {
    padding: 0.4rem 1.1rem;
    border: none;
    background: var(--color-white);
    color: var(--color-primary-dark);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    letter-spacing: 0.01em;
}

.mode-tab:first-child {
    border-right: 1px solid var(--color-primary-light);
}

.mode-tab:hover {
    background: var(--color-primary-bg);
}

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

/* -- Action Buttons -- */
.cropper-actions {
    margin-top: 0.25rem;
}

.actions-main {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.btn-action {
    min-width: 100px;
    padding: 0.45rem 1.2rem;
    font-size: 0.88rem;
}

.btn-action.btn-lg {
    flex: none;
    padding: 0.45rem 1.5rem;
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.18);
    letter-spacing: 0.01em;
}

.btn-action.btn-lg:hover {
    box-shadow: 0 3px 12px rgba(76, 175, 80, 0.28);
    transform: translateY(-1px);
}

.btn-action.btn-lg:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(76, 175, 80, 0.15);
}

/* -- Grid Panel -- */
.grid-panel {
    padding: 1.25rem;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.06), rgba(76, 175, 80, 0.02));
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-md);
}

.grid-options {
    margin-bottom: 1rem;
}

.grid-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.85rem;
}

.grid-preset-btn {
    padding: 0.45rem 0.95rem;
    border: 1px solid var(--color-primary-light);
    border-radius: 20px;
    background: var(--color-white);
    color: var(--color-primary-dark);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.grid-preset-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
    box-shadow: 0 1px 4px rgba(76, 175, 80, 0.15);
}

.grid-preset-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.grid-custom {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.grid-input {
    width: 64px;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    text-align: center;
    transition: border-color var(--transition);
}

.grid-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.12);
}

.grid-x {
    font-weight: 600;
    color: var(--color-text-light);
}

.grid-preview-area {
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--color-primary-light);
    aspect-ratio: 1 / 1;
    max-width: 280px;
    background-color: var(--color-bg);
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.grid-overlay {
    display: grid;
    width: 100%;
    height: 100%;
}

.grid-cell {
    border: 1px solid rgba(255, 255, 255, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
    color: transparent;
    background: rgba(76, 175, 80, 0.08);
    transition: all var(--transition);
    position: relative;
    box-shadow: inset 0 0 0 1px rgba(76, 175, 80, 0.2);
}

.grid-cell::after {
    content: attr(data-num);
    position: absolute;
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(76, 175, 80, 0.5);
    opacity: 0;
    transition: opacity var(--transition);
}

.grid-cell:hover {
    background: rgba(76, 175, 80, 0.2);
}

.grid-cell:hover::after {
    opacity: 1;
}

/* -- Grid Result Panel -- */
.grid-result-panel {
    padding: 0;
}

.grid-result-info {
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.grid-result-thumbs {
    display: grid;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.grid-thumb-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.grid-thumb-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.grid-thumb-img {
    display: block;
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    background: repeating-conic-gradient(#eee 0% 25%, #fff 0% 50%) 0 0 / 10px 10px;
}

.grid-thumb-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.35rem 0.5rem;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-light);
}

.grid-thumb-num {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
}

.grid-result-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    padding-top: 0.25rem;
}

/* -- Result Download -- */
.crop-result {
    margin-top: 1rem;
}

.result-download p {
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

/* -- Responsive -- */
@media (max-width: 768px) {
    .cropper-main {
        flex-direction: column;
    }

    .cropper-sidebar {
        width: 100%;
    }

    .crop-preview-box {
        width: 160px;
        height: 160px;
    }

    .cropper-toolbar {
        gap: 0.5rem;
        padding: 0.65rem 0.85rem;
    }

    .toolbar-group {
        padding-right: 0.5rem;
    }

    .rotate-slider-wrap .range-input {
        width: 80px;
    }

    .options-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .actions-main {
        flex-direction: column;
    }

    .btn-action {
        min-width: auto;
    }

    .btn-action.btn-lg {
        padding: 0.4rem 1.2rem;
        font-size: 0.85rem;
    }

    .grid-preview-area {
        max-width: 100%;
    }

    .cropper-mode-tabs {
        border-width: 1px;
    }

    .mode-tab {
        padding: 0.35rem 0.75rem;
        font-size: 0.8rem;
    }

    .corner-buttons {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .cropper-ratio-bar,
    .cropper-social-bar {
        padding: 0.6rem 0.75rem;
    }

    .ratio-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.775rem;
    }

    .tool-btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.775rem;
    }

    .cropper-canvas-wrap {
        min-height: 220px;
    }

    .grid-result-thumbs {
        gap: 0.4rem;
    }
}

/* Markdown 转换器 - 提示列表 */
.warnings-list {
    margin: 0.5rem 0 0 1.25rem;
    padding-left: 0.5rem;
}
.warnings-list li {
    margin-bottom: 0.35rem;
}
.warnings-list li:last-child {
    margin-bottom: 0;
}

/* ============================================
   AI 抠图 (Rembg) Tool Styles
   ============================================ */

.rembg-tool-card .tool-intro {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.rembg-tool-card .rembg-queue-tip {
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* 工具选项：紧凑精致一行展示 */
.rembg-toolbar {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0;
    padding: 0.4rem 0.75rem;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary, #f8f9fa) 100%);
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.rembg-toolbar-item {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

.rembg-toolbar-block {
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
}

.rembg-toolbar-block--model {
    background: transparent;
    border: none;
    border-right: 1px solid var(--color-border);
    margin-right: 0.35rem;
    padding-right: 0.5rem;
}

.rembg-toolbar-block--options {
    background: transparent;
    border: none;
    padding: 0 0.4rem;
    border-left: 1px solid var(--color-border);
}

.rembg-toolbar-block--options:first-of-type {
    border-left: none;
    padding-left: 0;
}

.rembg-toolbar-btn {
    margin-left: auto;
    flex-shrink: 0;
    padding: 0.35rem 0.9rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.rembg-toolbar-label {
    font-size: 0.78rem;
    color: var(--color-text-secondary);
    margin-right: 0.25rem;
    white-space: nowrap;
}

.rembg-toolbar-select {
    width: auto;
    min-width: 100px;
    max-width: 180px;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

/* 模型说明：横向云朵形式 */
.rembg-model-desc {
    display: inline-block;
    font-size: 0.65rem;
    color: var(--color-text-light);
    margin-left: 0.35rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(34, 197, 94, 0.04) 100%);
    border: 1px solid rgba(34, 197, 94, 0.15);
    max-width: 260px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: 0 1px 2px rgba(34, 197, 94, 0.06);
}

.rembg-toolbar .checkbox-label {
    font-size: 0.8rem;
    white-space: nowrap;
}

.rembg-toolbar .checkbox-label input {
    margin-right: 0.2rem;
    width: 0.9em;
    height: 0.9em;
}

.rembg-helptext-inline {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 0.9rem;
    height: 0.9rem;
    font-size: 0.65rem;
    color: var(--color-text-light);
    background: var(--color-border);
    border-radius: 50%;
    cursor: help;
}

.rembg-helptext-inline:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.rembg-helptext-inline[data-tooltip]::after {
    content: attr(data-tooltip);
    display: block;
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.4rem 0.6rem;
    font-size: 0.75rem;
    line-height: 1.4;
    color: var(--color-white);
    background: var(--color-text);
    border-radius: var(--radius-sm);
    min-width: 160px;
    max-width: 260px;
    width: max-content;
    white-space: normal;
    writing-mode: horizontal-tb;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.rembg-helptext-inline[data-tooltip]::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-text);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 101;
}

.rembg-helptext-inline[data-tooltip]:hover::after,
.rembg-helptext-inline[data-tooltip]:hover::before {
    opacity: 1;
    visibility: visible;
}

/* 上传与结果：左右两栏，等高且固定 */
.rembg-tool-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 420px;
    gap: 2rem;
    align-items: stretch;
}

.rembg-form-area,
.rembg-result-area {
    min-width: 0;
    height: 420px;
    min-height: 420px;
    max-height: 420px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.rembg-upload-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    height: 100%;
}

.rembg-upload-panel .file-list {
    flex-shrink: 0;
    max-height: 2.5em;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rembg-form-area {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
}

.rembg-upload-panel .upload-dropzone {
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.rembg-result-area {
    flex: 1;
}

.rembg-panel-label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.rembg-result-area {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
}

.rembg-placeholder {
    color: var(--color-text-light);
    text-align: center;
    font-size: 0.95rem;
}

.rembg-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--color-text-secondary);
}

.rembg-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: rembg-spin 0.8s linear infinite;
}

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

.rembg-result-container {
    width: 100%;
    flex: 1;
    min-height: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    align-content: start;
    overflow-y: auto;
}

.rembg-result-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.rembg-result-card img {
    max-width: 100%;
    max-height: 200px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* PC 和移动端均显示下载按钮，移动端额外显示长按提示 */
.rembg-download-pc { display: block; }
.rembg-download-mobile { display: none; }
@media (max-width: 768px) {
    .rembg-download-pc { display: block; }
    .rembg-download-mobile {
        display: block;
        font-size: 0.8rem;
        color: var(--color-text-light);
        margin: 0;
    }
}

.rembg-result {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.rembg-result img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    background: repeating-conic-gradient(#eee 0% 25%, #fff 0% 50%) 50% / 16px 16px;
}

.rembg-error {
    color: var(--color-danger);
    text-align: center;
    font-size: 0.95rem;
}

/* 能处理/不能处理 卡片网格 */
.rembg-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

.rembg-info-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    transition: box-shadow var(--transition);
}

.rembg-info-card:hover {
    box-shadow: var(--shadow-md);
}

.rembg-info-card--do {
    border-left: 4px solid #22c55e;
}

.rembg-info-card--dont {
    border-left: 4px solid #ef4444;
}

.rembg-info-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.rembg-info-card-icon {
    font-size: 1.25rem;
}

.rembg-info-card h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.rembg-info-card-list {
    padding-left: 1.25rem;
    margin: 0;
}

.rembg-info-card-list li {
    margin-bottom: 0.35rem;
    list-style: disc;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* 核心特点 卡片网格 */
.rembg-features-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.rembg-feature-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.rembg-feature-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-primary-light);
}

.rembg-feature-card-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.rembg-feature-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.form-select {
    width: 100%;
    padding: 0.6rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    cursor: pointer;
}

.file-list-header {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* 移动端：功能选项竖向布局 */
@media (max-width: 900px) {
    .rembg-toolbar {
        flex-direction: column;
        align-items: stretch;
        flex-wrap: wrap;
        gap: 0.6rem;
        padding: 0.6rem 0.75rem;
    }
    .rembg-toolbar-block--model {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        margin-right: 0;
        margin-bottom: 0.25rem;
        padding-right: 0;
        padding-bottom: 0.5rem;
        gap: 0.35rem;
    }
    .rembg-toolbar-block--model .rembg-toolbar-label {
        margin-right: 0;
    }
    .rembg-toolbar-block--model.rembg-toolbar-item {
        flex-direction: column;
        align-items: stretch;
    }
    .rembg-toolbar-block--model .rembg-toolbar-select {
        min-width: 100%;
        max-width: none;
    }
    .rembg-toolbar-block--model .rembg-model-desc {
        margin-left: 0;
        margin-top: 0.2rem;
        max-width: none;
        white-space: normal;
    }
    .rembg-toolbar-block--options {
        border-left: none;
        padding-left: 0;
    }
    .rembg-toolbar-btn {
        margin-left: 0;
        margin-top: 0.25rem;
    }
}

@media (max-width: 768px) {
    .rembg-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .rembg-tool-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 420px 420px;
    }

    .rembg-cards-grid {
        grid-template-columns: 1fr;
    }

    .rembg-features-cards {
        grid-template-columns: 1fr;
    }
}

/* 保存图片弹窗 */
.rembg-save-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}
.rembg-save-modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
}
.rembg-save-modal {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-lg);
    max-width: 90%;
    min-width: 260px;
}
.rembg-save-modal-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}
.rembg-save-modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}
.rembg-save-modal-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    flex: 1;
    min-width: 0;
}