/* 
 * 图片字幕生成器样式表
 * 采用模块化CSS结构，遵循现代前端开发规范
 */

:root {
    --apple-blue: #007AFF;
    --apple-light-gray: #F5F5F7;
    --apple-dark-gray: #333333;
    --apple-border-color: #D2D2D7;
    --apple-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    margin: 0 auto;
    padding: 40px 20px;
    max-width: 1200px;
    color: var(--apple-dark-gray);
    background-color: #FFFFFF;
    line-height: 1.5;
}

/* 标题样式 */
h1 {
    text-align: center;
    margin-bottom: 40px;
    font-weight: 500;
    font-size: 32px;
    letter-spacing: -0.5px;
}

h2 {
    font-weight: 500;
    font-size: 22px;
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

/* 布局容器 */
.container {
    display: flex;
    gap: 40px;
    margin: 0 auto;
}

.control-panel {
    flex: 1;
    max-width: 400px;
    background-color: #FFFFFF;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--apple-shadow);
}

.preview-panel {
    flex: 2;
    background-color: #FFFFFF;
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--apple-shadow);
}

/* 表单元素样式 */
.form-group {
    margin-bottom: 20px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #86868B;
}

/* 文件上传样式 */
input[type="file"] {
    width: 100%;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--apple-dark-gray);
    border: none;
    padding: 8px 0;
}

input[type="file"]::-webkit-file-upload-button {
    background-color: var(--apple-light-gray);
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-family: inherit;
    font-size: 14px;
    color: var(--apple-dark-gray);
    margin-right: 12px;
    cursor: pointer;
    transition: background-color 0.2s;
}

input[type="file"]::-webkit-file-upload-button:hover {
    background-color: #E8E8ED;
}

/* 数字输入框样式 */
input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--apple-border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s;
    -moz-appearance: textfield;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* 颜色选择器样式 */
input[type="color"] {
    -webkit-appearance: none;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
    background: none;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--apple-border-color);
    border-radius: 8px;
}

.color-input-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.color-label {
    font-size: 16px;
    color: var(--apple-dark-gray);
}

/* 文本区域样式 */
textarea {
    width: 100%;
    height: 150px;
    resize: vertical;
    margin-bottom: 24px;
    padding: 12px;
    border: 1px solid var(--apple-border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 16px;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* 按钮样式 */
.buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

button {
    padding: 12px 24px;
    background-color: var(--apple-blue);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s;
}

button:hover {
    background-color: #0062CC;
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    background-color: #A2A2A7;
    cursor: not-allowed;
    transform: none;
}

/* 预览区域样式 */
#preview-container {
    text-align: center;
    border-radius: 12px;
    padding: 24px;
    margin-top: 20px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--apple-light-gray);
    overflow: hidden;
}

#preview {
    max-width: 100%;
    max-height: 600px;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: var(--apple-shadow);
    transition: transform 0.3s ease;
}

#preview:hover {
    transform: scale(1.01);
}

.subtitle-line {
    color: white;
    padding: 8px 0;
    margin: 0;
    text-align: center;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .control-panel {
        max-width: 100%;
    }
}

/* 动画效果 */
.preview-animation {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

/* 提示框样式 */
.apple-alert {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
}

/* 保存反馈样式 */
.save-feedback {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 18px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
}

#preview-container.has-image {
    background-color: #E8E8ED;
}