:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --primary-light: #ebf5fb;
    --text-dark: #2c3e50;
    --text-medium: #666;
    --text-light: #999;
    --border-color: #ddd;
    --bg-light: #f8f9fa;
    --success-color: #2ecc71;
    --error-color: #e74c3c;

    /* 颜色 */
    --background-color: #f8f9fa;
    --sidebar-background: #ffffff;
    --tool-group-background: #ffffff;
    --button-background: #f8f9fa;
    --button-hover-background: #e9ecef;
    --text-color: #212529;
    --heading-color: #343a40;
    --label-color: #6c757d;
    --border-color: #dee2e6;
    --accent-color: #0d6efd;
    --accent-hover-color: #0b5ed7;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* 圆角 */
    --border-radius-sm: 4px;
    --border-radius-md: 6px;
    --border-radius-lg: 8px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 50px auto;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 0;
    color: #2c3e50;
}

.upload-container {
    margin-bottom: 30px;
}

.upload-box {
    border: 2px dashed #bdc3c7;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    background-color: white;
    transition: border 0.3s ease;
}

.upload-box:hover {
    border-color: #3498db;
}

.upload-box.drag-over {
    background-color: #f7f9fc;
    border-color: #3498db;
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 15px;
}

.upload-btn {
    background-color: #3498db;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.3s ease;
}

.upload-btn:hover {
    background-color: #2980b9;
}

.convert-options {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    overflow: hidden;
}

.convert-header {
    padding: 15px 20px;
    background-color: #f8f9fa;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.convert-header h3 {
    margin: 0;
    color: #2c3e50;
    font-size: 16px;
}

.convert-body {
    padding: 20px;
}

.format-selector {
    text-align: left;
}

.format-selector label {
    display: block;
    margin-bottom: 12px;
    color: #666;
    font-weight: 500;
}

.format-options {
    display: flex;
    gap: 12px;
}

.format-option {
    flex: 1;
    position: relative;
    cursor: pointer;
}

.format-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.format-label {
    display: block;
    padding: 10px;
    text-align: center;
    background-color: #f8f9fa;
    border: 2px solid #eee;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.format-option:hover .format-label {
    border-color: #3498db;
    background-color: #f0f7fc;
}

.format-option input[type="radio"]:checked + .format-label {
    background-color: #3498db;
    border-color: #3498db;
    color: white;
}

.convert-btn {
    background-color: #2ecc71;
    color: white;
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.convert-btn:not(:disabled):hover {
    background-color: #27ae60;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.convert-btn:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

@media (max-width: 480px) {
    .format-options {
        flex-direction: column;
    }
    
    .format-option {
        width: 100%;
    }
}

/* 添加一些响应式调整 */
@media (max-width: 768px) {
    .container {
        margin: 20px auto;
        padding: 15px;
    }

    .upload-box {
        padding: 20px;
    }

    h1 {
        font-size: 24px;
        margin-bottom: 20px;
    }
}

/* 在文件末尾添加提示框样式 */

.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.toast {
    background-color: #2ecc71;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    margin: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
}

.toast.error {
    background-color: #e74c3c;
}

.toast-message {
    margin-right: 12px;
    flex-grow: 1;
}

.toast-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 18px;
    padding: 0 4px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.toast-close:hover {
    opacity: 1;
}

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

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

/* 在文件末尾添加进度条样式 */
.progress-container {
    margin-top: 20px;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress {
    width: 0;
    height: 100%;
    background-color: #2ecc71;
    transition: width 0.3s ease;
    border-radius: 10px;
    position: relative;
}

.progress-text {
    color: #666;
    font-size: 14px;
}

/* 添加进度条动画效果 */
.progress.active {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 40px 40px;
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    from {
        background-position: 40px 0;
    }
    to {
        background-position: 0 0;
    }
}

/* 在文件末尾添加下载按钮样式 */
.download-container {
    margin-top: 20px;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    animation: fadeIn 0.5s ease-out;
}

.download-btn {
    background-color: #3498db;
    color: white;
    padding: 8px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    gap: 4px;
    width: 100%;
}

.download-btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.download-icon {
    fill: currentColor;
    width: 16px;
    height: 16px;
    margin-right: 0;
}

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

/* 在文件中添加新的样式 */

.options-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 15px 0;
}

.option-group {
    text-align: left;
}

.option-group label {
    display: block;
    margin-bottom: 8px;
    color: #666;
}

.size-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.size-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px;
    border-radius: 5px;
    background-color: #f8f9fa;
    transition: background-color 0.2s;
}

.size-checkbox:hover {
    background-color: #e9ecef;
}

.size-checkbox input {
    margin: 0;
}

.download-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.download-item {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    text-align: left;
}

.download-item-info {
    margin-bottom: 10px;
    font-size: 14px;
    color: #666;
}

.download-item .download-btn {
    width: 100%;
    justify-content: center;
    padding: 8px 15px;
    font-size: 14px;
}

/* 在文件中添加尺寸选择器样式 */
.size-selector {
    margin-bottom: 20px;
    text-align: left;
}

.size-selector label {
    display: block;
    margin-bottom: 8px;
    color: #666;
}

.size-select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: white;
    margin-bottom: 15px;
    font-size: 14px;
}

.size-select option {
    padding: 8px;
    line-height: 1.4;
}

.size-select option.warning {
    background-color: #fff3cd;
    color: #856404;
}

.size-select option.upscale {
    background-color: #f8f9fa;
    color: #666;
}

.size-select option.recommended {
    background-color: #d4edda;
    color: #155724;
}

/* 修改 optgroup 样式 */
.size-select optgroup {
    font-weight: 600;
    color: #666;
    background-color: #f8f9fa;
    padding: 8px 4px;
}

/* 添加图标提示说明 */
.size-select-info {
    margin-top: 8px;
    font-size: 12px;
    color: #666;
}

.size-select-info .icon-info {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 4px 0;
}

.download-item {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    text-align: left;
}

.download-item-info {
    margin-bottom: 10px;
    font-size: 14px;
    color: #666;
}

/* 在文件中添加预览下载区域样式 */
.preview-download {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 15px;
}

.preview-area {
    text-align: left;
}

.preview-area h4 {
    margin-bottom: 10px;
    color: #666;
}

.preview-frame {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#downloadPreview {
    max-width: 100%;
    max-height: 200px;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .preview-download {
        grid-template-columns: 1fr;
    }
}

/* 添加警告样式 */
.size-warning {
    margin-top: 10px;
    padding: 12px;
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 5px;
    color: #856404;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 14px;
    animation: fadeIn 0.3s ease-out;
}

.warning-item {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.warning-icon {
    font-size: 16px;
    line-height: 1.4;
}

.warning-text {
    flex: 1;
    line-height: 1.4;
}

/* 添加下拉框选项样式 */
.size-select option {
    padding: 8px;
}

.size-select option.warning {
    background-color: #fff3cd;
    color: #856404;
}

.size-select option.upscale {
    background-color: #f8f9fa;
    color: #666;
    font-style: italic;
}

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

/* 修改 select 样式以更好地显示分组 */
optgroup {
    font-weight: 600;
    color: #666;
    background-color: #f8f9fa;
}

option {
    padding: 4px 8px;
    color: #333;
}

option[data-will-distort="true"] {
    color: #856404;
    background-color: #fff3cd;
}

/* 更新格式选择器样式 */
.format-groups {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.format-group {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
}

.format-group-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 12px;
    font-weight: 500;
}

.format-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
}

.format-option {
    flex: 1;
    position: relative;
    cursor: pointer;
}

.format-label {
    display: flex;
    padding: 10px;
    text-align: center;
    background-color: white;
    border: 2px solid #eee;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
    align-items: center;
    justify-content: center;
    min-height: 42px;
}

/* 添加格式说明提示 */
.format-label::after {
    content: attr(data-description);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.format-label:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 5px);
}

@media (max-width: 480px) {
    .format-options {
        grid-template-columns: 1fr;
    }
}

/* 添加网站头部和 logo 样式 */
.site-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    margin-bottom: 40px;
    gap: 20px;
}

.header-left {
    justify-self: start;
}

.header-center {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-right {
    justify-self: end;
}

.site-logo {
    width: 48px;
    height: 48px;
    animation: logoRotate 8s linear infinite;
}

@keyframes logoRotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 更新标题样式 */
.site-header h1 {
    margin: 0;
    color: #2c3e50;
}

/* 移除原有的 h1 margin */
h1 {
    margin-bottom: 0;
}

/* 工具切换器样式 */
.tool-switcher {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
}

.switcher-container {
    background: white;
    padding: 3px;
    border-radius: 100px;
    display: inline-flex;
    position: relative;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.switcher-container input[type="radio"] {
    display: none;
}

.switcher-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    font-size: 14px;
    color: #333;
    cursor: pointer;
    position: relative;
    z-index: 2;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.switcher-icon {
    fill: #333;
    width: 20px;
    height: 20px;
    transition: fill 0.3s ease;
}

.switcher-highlight {
    position: absolute;
    top: 3px;
    left: 3px;
    bottom: 3px;
    width: 33.333%;
    background: #66A4F8;
    border-radius: 100px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

/* 切换动画 */
#generator:checked ~ .switcher-highlight {
    transform: translateX(100%);
}

#editor:checked ~ .switcher-highlight {
    transform: translateX(194%);
}

/* 选中状态 */
#converter:checked ~ label[for="converter"],
#generator:checked ~ label[for="generator"],
#editor:checked ~ label[for="editor"] {
    color: #ffffff !important;
}

#converter:checked ~ label[for="converter"] .switcher-icon,
#generator:checked ~ label[for="generator"] .switcher-icon,
#editor:checked ~ label[for="editor"] .switcher-icon {
    fill: #ffffff !important;
}

/* 悬停状态 */
.switcher-option:hover {
    color: #66A4F8;
}

.switcher-option:hover .switcher-icon {
    fill: #66A4F8;
}

/* 选中项的悬停状态 */
#converter:checked ~ label[for="converter"]:hover,
#generator:checked ~ label[for="generator"]:hover,
#editor:checked ~ label[for="editor"]:hover {
    color: #ffffff !important;
}

#converter:checked ~ label[for="converter"]:hover .switcher-icon,
#generator:checked ~ label[for="generator"]:hover .switcher-icon,
#editor:checked ~ label[for="editor"]:hover .switcher-icon {
    fill: #ffffff !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tool-switcher {
        position: fixed;
        top: auto;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
    }

    .switcher-container {
        box-shadow: 0 2px 15px rgba(0,0,0,0.15);
    }
}

/* 格式支持提示样式 */
.format-support {
    margin-top: 20px;
    color: #666;
    font-size: 13px;
    line-height: 1.5;
    padding: 15px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.format-support:hover {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.format-support-title {
    color: #333;
    font-weight: 500;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.format-support-title::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 16px;
    background: #66A4F8;
    border-radius: 2px;
}

.format-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin: 10px 0;
}

.format-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background-color: #f0f7fc;
    color: #66A4F8;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid rgba(102, 164, 248, 0.1);
    cursor: help;
}

.format-tag:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(102, 164, 248, 0.15);
    background-color: #e6f3ff;
}

.format-tag.recommended::after {
    content: "★";
    font-size: 10px;
    color: #66A4F8;
}

.format-tip {
    margin-top: 8px;
    font-size: 12px;
    color: #666;
    text-align: center;
    padding: 6px 12px;
    background: #f8f9fa;
    border-radius: 100px;
    display: inline-block;
}

.format-tip-icon {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: 4px;
    vertical-align: -2px;
}

/* 尺寸选择器样式 */
.size-selector {
    margin-top: 20px;
}

.size-options {
    margin-top: 10px;
}

.size-select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    color: #333;
    background-color: #fff;
    transition: all 0.3s ease;
}

.size-select:hover {
    border-color: #66A4F8;
}

.size-select:focus {
    outline: none;
    border-color: #66A4F8;
    box-shadow: 0 0 0 2px rgba(102, 164, 248, 0.2);
}

.custom-size {
    margin-top: 12px;
}

.custom-size-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    color: #666;
}

.custom-size-toggle input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.custom-size-inputs {
    margin-top: 12px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.size-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.size-input-group label {
    min-width: 60px;
    color: #666;
    font-size: 13px;
}

.size-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.size-input-wrapper input {
    width: 100%;
    padding: 6px 30px 6px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    color: #333;
    transition: all 0.3s ease;
}

.size-input-wrapper input:hover {
    border-color: #66A4F8;
}

.size-input-wrapper input:focus {
    outline: none;
    border-color: #66A4F8;
    box-shadow: 0 0 0 2px rgba(102, 164, 248, 0.2);
}

.size-unit {
    position: absolute;
    right: 10px;
    color: #999;
    font-size: 12px;
    pointer-events: none;
}

.maintain-ratio {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    color: #666;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.maintain-ratio input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

/* 尺寸设置区域样式 */
.size-control {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.size-control h3 {
    margin: 0 0 15px 0;
    color: #2c3e50;
    font-size: 1.1em;
    font-weight: 600;
}

/* 自定义尺寸开关 */
.custom-size-toggle {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 8px 12px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.custom-size-toggle label {
    margin-left: 8px;
    color: #4a5568;
    font-size: 0.95em;
    user-select: none;
}

/* 自定义尺寸输入区域 */
.custom-size-inputs {
    display: none;
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.custom-size-inputs.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

/* 预设尺寸选择 */
.preset-sizes {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.preset-sizes select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    background-color: #fff;
    color: #2d3748;
    font-size: 0.95em;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    height: 38px; /* 与输入框高度保持一致 */
}

.size-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.size-input-group:last-child {
    margin-bottom: 0;
}

.size-input-group label {
    min-width: 80px; /* 统一标签宽度 */
    color: #4a5568;
    font-size: 0.95em;
}

.size-input-group input[type="number"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    font-size: 0.95em;
    color: #2d3748;
    transition: border-color 0.2s;
    height: 38px; /* 与选择框高度保持一致 */
}

.size-input-group input[type="number"]:focus,
.preset-sizes select:focus {
    border-color: #4299e1;
    outline: none;
    box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.2);
}

/* 维持比例选项 */
.maintain-ratio {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    margin-top: 12px;
    background: #f7fafc;
    border-radius: 6px;
    border: 1px solid #e1e4e8;
}

.maintain-ratio input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
}

.maintain-ratio label {
    font-size: 0.95em;
    color: #4a5568;
    user-select: none;
}

/* 尺寸控制容器布局 */
.size-control-container {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.size-control-item {
    flex: 1;
    min-width: 0; /* 防止子元素溢出 */
}

/* 响应式调整 */
@media (max-width: 768px) {
    .size-control-container {
        flex-direction: column;
    }
    
    .size-control-item {
        width: 100%;
    }
}

/* 尺寸设置区域样式 */
.size-control {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.size-control h3 {
    margin: 0 0 15px 0;
    color: #2c3e50;
    font-size: 1.1em;
    font-weight: 600;
}

/* 自定义尺寸开关 */
.custom-size-toggle {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 8px 12px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.custom-size-toggle label {
    margin-left: 8px;
    color: #4a5568;
    font-size: 0.95em;
    user-select: none;
}

/* 自定义尺寸输入区域 */
.custom-size-inputs {
    display: none;
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.custom-size-inputs.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

/* 预设尺寸选择 */
.preset-sizes {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e1e4e8;
}

.preset-sizes select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    background-color: #fff;
    color: #2d3748;
    font-size: 0.95em;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    height: 38px; /* 与输入框高度保持一致 */
}

.size-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.size-input-group:last-child {
    margin-bottom: 0;
}

.size-input-group label {
    min-width: 80px; /* 统一标签宽度 */
    color: #4a5568;
    font-size: 0.95em;
}

.size-input-group input[type="number"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    font-size: 0.95em;
    color: #2d3748;
    transition: border-color 0.2s;
    height: 38px; /* 与选择框高度保持一致 */
}

.size-input-group input[type="number"]:focus,
.preset-sizes select:focus {
    border-color: #4299e1;
    outline: none;
    box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.2);
}

/* 维持比例选项 */
.maintain-ratio {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    margin-top: 12px;
    background: #f7fafc;
    border-radius: 6px;
    border: 1px solid #e1e4e8;
}

.maintain-ratio input[type="checkbox"] {
    margin-right: 8px;
    width: 16px;
    height: 16px;
}

.maintain-ratio label {
    font-size: 0.95em;
    color: #4a5568;
    user-select: none;
}

/* 尺寸控制容器布局 */
.size-control-container {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.size-control-item {
    flex: 1;
    min-width: 0; /* 防止子元素溢出 */
}

/* 响应式调整 */
@media (max-width: 768px) {
    .size-control-container {
        flex-direction: column;
    }
    
    .size-control-item {
        width: 100%;
    }
}

/* 尺寸警告提示 */
.size-warning {
    margin-top: 12px;
    font-size: 0.9em;
}

.warning-item {
    display: flex;
    align-items: flex-start;
    padding: 8px 12px;
    margin-bottom: 8px;
    background: #fff8dc;
    border: 1px solid #ffd700;
    border-radius: 6px;
}

.warning-item:last-child {
    margin-bottom: 0;
}

.warning-icon {
    margin-right: 8px;
    font-size: 1.1em;
}

.warning-text {
    color: #6b5900;
    line-height: 1.4;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式调整 */
@media (max-width: 480px) {
    .size-control {
        padding: 15px;
    }

    .size-input-group {
        flex-direction: column;
        align-items: stretch;
    }

    .size-input-group label {
        margin-bottom: 5px;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--label-color);
}

/* 输入框样式 */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--button-background);
    border-radius: var(--border-radius-sm);
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

/* 工具提示样式 */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 8px;
    background: var(--text-color);
    color: white;
    font-size: 12px;
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

[data-tooltip]:hover:before {
    opacity: 1;
    visibility: visible;
}

/* 裁剪尺寸控制样式 */
.crop-size-controls {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-light);
    border-radius: var(--border-radius-md);
}

.crop-size-controls .tool-item {
    margin-bottom: var(--spacing-sm);
}

.crop-size-controls .size-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    color: var(--text-color);
    background: white;
}

.crop-size-controls .size-input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.crop-size-controls #applyCropSize {
    width: 100%;
    margin-top: var(--spacing-sm);
}

/* 尺寸警告提示 */
.size-warning {
    margin-top: 12px;
    padding: 8px 12px;
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 6px;
    color: #856404;
    font-size: 0.9em;
    display: none;
}

.size-warning.show {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

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

[data-tooltip] {
    position: relative;
}

[data-tooltip]:before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 8px;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 12px;
    white-space: nowrap;
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
    margin-bottom: 5px;
}

[data-tooltip]:hover:before {
    opacity: 1;
    visibility: visible;
}