body {
    font-family: sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    padding:20px;
}

h1 {
    color: #0056b3;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 800px;
}

.upload-section, .watermark-section, .canvas-container, .download-section {
    margin-bottom: 20px;
}

.download-section {
    display: flex;
    gap: 10px;
}

#watermark-selector {
    padding: 8px;
    font-size: 16px;
    border-radius: 4px;
    border: 1px solid #ddd;
    min-width: 200px;
}

.canvas-container {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 10px;
    background-color: #fafafa;
    max-height: 70vh; /* 最大高度为视口高度的70% */
    display: none; /* 默认隐藏 */
    justify-content: center; /* 水平居中 */
    align-items: center; /* 垂直居中 */
}

#imageCanvas {
    max-width: 100%;
    display: block;
}

#resultImage {
    max-width: 100%;
    display: block;
    margin: 0 auto; /* 居中显示 */
}

button {
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}
#drop-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s, border-color 0.3s;
}

#drop-zone.dragover {
    background-color: #f0f8ff;
    border-color: #007bff;
}

.custom-watermark-section {
    margin-top: 15px;
}

.fullscreen-option {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.fullscreen-option label {
    cursor: pointer;
}

.separator {
    text-align: center;
    margin: 15px 0;
    color: #888;
}

#customWatermark {
    width: calc(100% - 20px); /* 减去内边距 */
    padding: 10px;
    font-size: 16px;
    border: 2px solid #ddd;
    border-radius: 8px;
    transition: border-color 0.3s;
}

#customWatermark:focus {
    outline: none;
    border-color: #007bff;
}
#watermark-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.watermark-option {
    padding: 10px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.3s, background-color 0.3s;
    background-color: #f9f9f9;
    text-align: center;
}

.upload-new {
    font-weight: bold;
    color: #007bff;
}

#no-watermark-option {
    font-weight: bold;
    color: #007bff;
}

.watermark-option.selected {
    border-color: #007bff;
}

.option-controls {
    display: flex;
    gap: 20px; /* Add some space between the two options */
    margin-top: 10px;
}

.advanced-option, .fullscreen-option {
    margin-top: 0; /* Remove the top margin to align them */
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.advanced-option label {
    cursor: pointer;
}

#advanced-controls {
    margin-top: 15px;
    padding: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.control-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.control-group label {
    flex-basis: 30%;
}

.control-group input {
    flex-basis: 70%;
}

.control-group input[type="color"] {
    flex-basis: 60px;
    flex-grow: 0;
    padding: 2px;
    min-width: 0;
    height: 30px; /* 统一高度 */
}

.color-controls {
    justify-content: space-between;
}

.color-controls label {
    flex-grow: 0;
}

.color-controls #apply-color-container {
    display: flex;
    align-items: center;
    gap: 5px;
}

.color-controls #apply-color-container label {
    flex-shrink: 0; /* 防止标签收缩 */
    white-space: nowrap; /* 防止文字换行 */
}
#time-watermark {
    margin-left: 15px;
    vertical-align: middle;
}