/* 前台留言板样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
    background: transparent;
    color: #333;
    font-size: 14px;
}

.guestbook-container {
    max-width: 700px;
    margin: 0 auto;
    padding: 24px 20px;
}

.guestbook-header {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.guestbook-header h2 {
    font-size: 22px;
    color: #1a1a2e;
    margin-bottom: 6px;
}

.guestbook-desc {
    color: #999;
    font-size: 13px;
}

/* 表单组 */
.gb-form-group {
    margin-bottom: 20px;
}

.gb-form-group > label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: #444;
    font-size: 14px;
}

.gb-required {
    color: #e53e3e;
    margin-right: 2px;
}

.gb-optional {
    color: #aaa;
    font-weight: normal;
    font-size: 12px;
}

.gb-field-hint {
    font-size: 12px;
    color: #999;
    margin-top: 4px;
}

/* 输入框 */
.gb-form-group input[type="text"],
.gb-form-group input[type="tel"],
.gb-form-group input[type="email"],
.gb-form-group input[type="datetime-local"],
.gb-form-group select,
.gb-form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color .2s, box-shadow .2s;
    background: #fff;
}

.gb-form-group input:focus,
.gb-form-group select:focus,
.gb-form-group textarea:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.gb-form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 单选框/多选框 */
.gb-radio-group,
.gb-checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 8px 0;
}

.gb-radio-label,
.gb-checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-weight: normal;
    font-size: 14px;
    padding: 6px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    transition: all .2s;
}

.gb-radio-label:hover,
.gb-checkbox-label:hover {
    border-color: #4facfe;
    background: #f0f8ff;
}

.gb-radio-label input,
.gb-checkbox-label input {
    width: 16px;
    height: 16px;
}

/* 区域联动 */
.gb-region-group {
    display: flex;
    gap: 10px;
}

.gb-region-group select {
    flex: 1;
}

/* 上传区域 */
.gb-upload-area {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    transition: border-color .2s;
    background: #fafbfc;
}

.gb-upload-area:hover {
    border-color: #4facfe;
}

.gb-upload-area input[type="file"] {
    margin-bottom: 8px;
}

.gb-upload-hint {
    font-size: 12px;
    color: #aaa;
    margin-top: 6px;
}

/* 图片预览 */
.gb-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.gb-preview .preview-item {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.gb-preview .preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gb-preview .preview-item .remove-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(229,62,62,0.9);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
    display: none;
}

.gb-preview .preview-item:hover .remove-btn {
    display: block;
}

/* 按钮 */
.gb-form-actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.gb-btn-submit {
    flex: 1;
    padding: 12px 24px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .2s, transform .1s;
    font-family: inherit;
}

.gb-btn-submit:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.gb-btn-submit:active {
    transform: translateY(0);
}

.gb-btn-reset {
    padding: 12px 20px;
    background: #f0f2f5;
    color: #666;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background .2s;
    font-family: inherit;
}

.gb-btn-reset:hover {
    background: #e2e8f0;
}

/* 提示信息 */
.gb-alert {
    padding: 12px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.gb-alert-success {
    background: #f0fff4;
    color: #276749;
    border: 1px solid #c6f6d5;
}

.gb-alert-error {
    background: #fff5f5;
    color: #c53030;
    border: 1px solid #fed7d7;
}

.gb-empty {
    text-align: center;
    padding: 40px;
    color: #999;
}

/* 响应式 */
@media (max-width: 480px) {
    .guestbook-container {
        padding: 16px 12px;
    }
    .gb-region-group {
        flex-direction: column;
    }
    .gb-form-actions {
        flex-direction: column;
    }
}