/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.header {
    background-color: #fff;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.header h1 {
    font-size: 18px;
    font-weight: 600;
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    padding: 60px 15px 70px;
    overflow-y: auto;
}

/* 反馈列表样式 */
.feedback-list {
    margin-bottom: 20px;
}

.feedback-item {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 悬浮按钮 */
.floating-button {
    position: fixed;
    right: 20px;
    bottom: 80px;
    z-index: 99;
}

.add-feedback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: #007AFF;
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.add-feedback i {
    font-size: 24px;
}

/* 底部导航 */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    display: flex;
    padding: 8px 0;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #666;
    font-size: 12px;
}

.nav-item i {
    font-size: 20px;
    margin-bottom: 4px;
}

.nav-item.active {
    color: #007AFF;
}

/* 响应式调整 */
@media (max-width: 320px) {
    .header h1 {
        font-size: 16px;
    }
    
    .main-content {
        padding: 50px 10px 60px;
    }
}