/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f5f5f7;
    color: #1d1d1f;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
}

/* 上传区域样式 */
.upload-area {
    background-color: white;
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.upload-btn {
    background-color: #0071e3;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 20px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.upload-btn:hover {
    background-color: #0077ed;
}

.upload-tip {
    margin-top: 1rem;
    color: #86868b;
}

/* 编辑区域样式 */
.edit-area {
    background-color: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.canvas-container {
    width: 100%;
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid #e5e5e5;
}

/* 控制面板样式 */
.control-panel {
    max-width: 500px;
    margin: 0 auto;
}

.control-group {
    margin-bottom: 1.5rem;
    position: relative;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #1d1d1f;
    font-weight: 500;
}

input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #d2d2d7;
    border-radius: 8px;
    font-size: 16px;
}

input[type="range"] {
    width: calc(100% - 50px);
    height: 6px;
    background: #d2d2d7;
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: #0071e3;
    border-radius: 50%;
    cursor: pointer;
}

.range-value {
    position: absolute;
    right: 0;
    bottom: 0;
    color: #86868b;
    font-size: 14px;
    min-width: 40px;
    text-align: right;
}

.download-btn {
    width: 100%;
    background-color: #0071e3;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 20px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 1rem;
}

.download-btn:hover {
    background-color: #0077ed;
}