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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 20px;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    border-radius: 20px;
    width: 100%;
    max-width: 400px;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-header h3 {
    margin: 0;
    color: #333;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s;
}

.close-btn:hover {
    background: #f5f5f5;
}

.modal-body {
    padding: 20px;
}

.modal-body .form-group {
    margin-bottom: 15px;
}

.modal-body .form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.modal-body .form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    box-sizing: border-box;
}

.modal-body .form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.modal-body .btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
    margin-top: 10px;
}

.modal-body .btn-submit:active {
    transform: scale(0.98);
}

/* 按钮样式 */
button {
    font-family: inherit;
}

/* 输入框样式 */
input, select, textarea {
    font-family: inherit;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .login-box {
        padding: 20px;
    }
    
    .event-types-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 8px;
    }
    
    .event-type-btn {
        padding: 12px 8px;
    }
    
    .event-type-btn .icon {
        font-size: 28px;
    }
    
    .event-type-btn .name {
        font-size: 12px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.record-card {
    animation: fadeIn 0.3s ease;
}

/* 提示框样式 */
.alert {
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state i {
    font-size: 60px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 16px;
}

/* 分享链接样式 */
.share-section {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.share-link {
    background: #f5f5f5;
    padding: 12px;
    border-radius: 8px;
    word-break: break-all;
    font-size: 14px;
    color: #667eea;
    margin-top: 10px;
}

/* 切换宝宝下拉菜单 */
.switch-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 200px;
    z-index: 100;
    display: none;
}

.switch-dropdown.show {
    display: block;
}

.switch-dropdown-item {
    padding: 12px 15px;
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid #f0f0f0;
}

.switch-dropdown-item:last-child {
    border-bottom: none;
}

.switch-dropdown-item:hover {
    background: #f5f5f5;
}

/* 移动端优化 */
@media (max-width: 480px) {
    .record-container, .history-container, .analysis-container {
        padding: 15px;
    }
    
    .baby-info-header {
        padding: 15px;
    }
    
    .baby-info-header h2 {
        font-size: 18px;
    }
    
    .record-form {
        padding: 15px;
    }
    
    .stats-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-card .value {
        font-size: 24px;
    }
}

/* 打印样式 */
@media print {
    .bottom-nav, .header-actions, .record-actions {
        display: none !important;
    }
}