styles.css

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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    min-height: 100vh;
    background-color: #f5f7fa;
    margin: 0;
    padding: 40px;
}

.container {
    max-width: 1400px;
    min-height: calc(100vh - 80px);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: 40px;
    align-items: start;
}

.controls {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: 40px; /* 保留内边距 */
    border-radius: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    height: calc(100vh - 80px); /* 设置与 .preview-container 相同的高度 */
    box-sizing: border-box; /* 确保 padding 包含在高度内 */
    position: sticky;
    top: 40px;
    overflow-y: auto; /* 如果内容超出高度，允许滚动 */
}

h1 {
    color: #2c3e50;
    margin-bottom: 35px;
    font-size: 26px;
    border-bottom: 2px solid #eee;
    padding-bottom: 15px;
}

.control-group {
    margin: 25px 0;
}

.control-group label {
    display: block;
    margin-bottom: 10px;
    color: #34495e;
    font-weight: bold;
    font-size: 14px;
}

input[type="number"], select {
    width: 120px;
    padding: 8px 12px;
    border: 2px solid #e0e6ed;
    border-radius: 8px;
    margin-right: 10px;
    font-size: 14px;
    transition: border-color 0.3s;
}

input[type="number"]:focus, select:focus {
    border-color: #3498db;
    outline: none;
}

input[type="color"] {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 2px;
}

input[type="color"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

input[type="range"] {
    width: 100%;
    margin: 10px 0;
    -webkit-appearance: none;
    height: 6px;
    background: #e0e6ed;
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: #3498db;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}

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

button {
    background: #3498db;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 10px;
    cursor: pointer;
    margin-top: 30px;
    width: 100%;
    font-size: 16px;
    transition: background 0.3s;
}

button:hover {
    background: #2980b9;
}

.preview {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    width: 100%;
    height: 100%;
    transition: all 0.3s ease;
    position: relative;
}

/* 尺寸输入组样式 */
.size-inputs {
    display: flex;
    align-items: center;
    gap: 10px;
}

.size-inputs span {
    color: #7f8c8d;
    font-size: 16px;
    font-weight: bold;
}

/* 颜色选择组样式 */
.color-inputs {
    display: flex;
    gap: 12px;
}

/* 格式选择样式 */
select {
    width: 100%;
    padding: 10px;
    background-color: white;
    cursor: pointer;
}

/* 角度显示样式 */
#angleValue {
    display: inline-block;
    min-width: 50px;
    text-align: right;
    color: #7f8c8d;
    font-weight: bold;
}

.preset-gradients {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.preset-btn {
    background: white;
    border: 2px solid transparent;
    padding: 4px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 10px;
    position: relative;
}

.preset-btn:hover {
    transform: translateY(-2px);
    border-color: #e2e8f0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.preset-preview {
    width: 100%;
    height: 100%;
    border-radius: 8px;
    transition: all 0.3s ease;
}

/* 修改悬停提示样式 */
.preset-btn::after {
    content: attr(title);
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
}

.preset-btn:hover::after {
    opacity: 1;
    visibility: visible;
    top: -30px;
}

.preset-btn span {
    font-size: 13px;
    color: #4a5568;
    font-weight: 500;
    display: block;
    padding: 4px 0;
}

button#download {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: white;
    border: none;
    padding: 16px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.2);
    margin-top: 35px;
}

button#download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(66, 153, 225, 0.25);
    background: linear-gradient(135deg, #4299e1 0%, #2b6cb0 100%);
}

button#download:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.2);
}

/* 添加响应式设计 */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .controls {
        position: relative;
        top: 0;
    }
} 

/* 添加格式选择样式 */
.format-options {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.format-option {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 8px 16px;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.format-option:hover {
    border-color: #4299e1;
    background: #f7fafc;
}

.format-option input[type="radio"] {
    display: none;
}

.format-option span {
    font-size: 14px;
    color: #4a5568;
    font-weight: 500;
}

.format-option input[type="radio"]:checked + span {
    color: #4299e1;
}

.format-option input[type="radio"]:checked ~ .format-option {
    border-color: #4299e1;
    background: #ebf8ff;
}

/* 优化滚动条样式 */
.controls::-webkit-scrollbar {
    width: 8px;
}

.controls::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.controls::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
}

.controls::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
} 

/* 修改预览区域相关样式 */
.preview-container {
    width: 100%;
    height: calc(100vh - 80px);
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    padding: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: 0;
    position: sticky;
    top: 40px;
}

/* 调整网格背景 */
.preview-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, #f5f5f5 25%, transparent 25%),
        linear-gradient(-45deg, #f5f5f5 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f5f5f5 75%),
        linear-gradient(-45deg, transparent 75%, #f5f5f5 75%);
    background-size: 24px 24px; /* 增大网格尺寸 */
    background-position: 0 0, 0 12px, 12px -12px, -12px 0px;
    border-radius: 24px;
    opacity: 0.5;
}

.preview {
    position: relative;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    z-index: 1;
}

.preview-content {
    width: 100%;
    height: 100%;
}