/* 全局样式 */
body {
    font-family: 'PingFang SC', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

/* iPhone 容器样式 */
.iphone-container {
    position: relative;
    width: 375px;
    height: 667px;
    margin: 0 auto;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    background-color: black;
}

.iphone-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 32px;
    overflow: hidden;
}

/* 状态栏样式 */
.status-bar {
    height: 44px;
    width: 100%;
    background-color: #ffffff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    font-size: 12px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.status-bar-left {
    display: flex;
    align-items: center;
}

.status-bar-center {
    font-size: 15px;
    font-weight: 600;
}

.status-bar-right {
    display: flex;
    align-items: center;
}

/* 导航栏样式 */
.nav-bar {
    height: 60px;
    width: 100%;
    background-color: #ffffff;
    display: flex;
    justify-content: space-around;
    align-items: center;
    position: fixed;
    bottom: 0;
    border-top: 1px solid #eaeaea;
    padding: 6px 0;
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 10px;
    color: #999;
}

.nav-item.active {
    color: #1971fc;
}

.nav-item i {
    font-size: 24px;
    margin-bottom: 4px;
}

/* 中国联通品牌色 */
.unicom-blue {
    color: #1971fc;
}

.unicom-bg-blue {
    background-color: #1971fc;
}

.unicom-red {
    color: #f54336;
}

.unicom-bg-red {
    background-color: #f54336;
}

/* 卡片样式 */
.card {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    margin-bottom: 16px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    padding: 16px;
    border-bottom: 1px solid #f2f2f2;
}

.card-content {
    padding: 16px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    border-radius: 20px;
    padding: 8px 20px;
    text-align: center;
    font-weight: 500;
    font-size: 14px;
}

.btn-primary {
    background-color: #1971fc;
    color: white;
}

.btn-secondary {
    background-color: #f2f2f2;
    color: #333;
}

/* 青少年专区特殊样式 */
.youth-gradient {
    background: linear-gradient(135deg, #1971fc, #66a6ff);
}

.ai-feature {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.ai-feature::before {
    content: "";
    position: absolute;
    top: -10px;
    right: -10px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(25, 113, 252, 0.2), rgba(25, 113, 252, 0.4));
    border-radius: 50%;
    z-index: 0;
}

/* 通用间距 */
.content-container {
    padding: 16px;
    padding-bottom: 80px; /* 为底部导航留出空间 */
}