/* header-styles.css - 头部两栏布局样式 */

/* 头部容器 */
.header-container {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
}

/* 标题栏 - 两栏布局 */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 80px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 5px;
    flex: 0 0 auto;
}

.logo-container h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    color: white;
    line-height: 1.2;
}

/* 导航栏容器 */
.header-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    background: rgba(0, 0, 0, 0.1);
    min-height: 50px;
    border-bottom: none; /* 移除底部边框避免白线 */
}

/* 主导航 */
.main-nav {
    flex: 1;
}

.main-nav-links {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
    flex-wrap: nowrap;
    justify-content: flex-start;
}

.main-nav-links li {
    margin: 0;
}

.main-nav-links a {
    color: white;
    font-weight: 500;
    padding: 15px 20px;
    position: relative;
    white-space: nowrap;
    transition: all 0.3s;
    display: block;
    font-size: 14px;
    text-decoration: none;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.main-nav-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.main-nav-links a.active {
    background: rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

.main-nav-links a.active::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--secondary-color);
}

.main-nav-links li:first-child a {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

/* 导航栏右侧区域 */
.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: 20px;
}

/* 导航栏语言切换器 */
.nav-lang-switcher {
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 5px;
}

.nav-lang-switcher button {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 5px 15px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.3s;
    min-width: 40px;
    text-align: center;
}

.nav-lang-switcher button:hover {
    background: rgba(255, 255, 255, 0.2);
}

.nav-lang-switcher button.active {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
    font-weight: 600;
}

/* 隐藏原来的头部和导航 */
body > header {
    display: none;
}

/* 注意：移除原来的语言切换器隐藏规则，只隐藏原来的nav-lang-switcher */
body > .lang-switcher {
    display: none;
}

/* 调整主体内容以防止被头部遮挡 */
.main-content {
    margin-top: 130px; /* header-top (80px) + header-bottom (50px) */
}

/* Hero Section 调整以适应新的头部高度 */
.hero {
    margin-top: 0; /* 移除之前的margin-top */
    min-height: calc(100vh - 130px);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .header-top {
        padding: 15px 30px;
    }
    
    .header-bottom {
        padding: 0 30px;
    }
    
    .main-nav-links a {
        padding: 15px 15px;
        font-size: 13px;
    }
    
    .logo-container h1 {
        font-size: 22px;
    }
    
    .nav-right {
        gap: 15px;
    }
    
    .nav-lang-switcher button {
        padding: 5px 12px;
        font-size: 11px;
        min-width: 35px;
    }
    
    .main-content {
        margin-top: 125px;
    }
    
    .hero {
        min-height: calc(100vh - 125px);
    }
}

@media (max-width: 992px) {
    /* 在小屏幕下保持完整桌面布局 */
    .header-top {
        padding: 12px 20px;
        min-height: 70px;
    }
    
    .header-bottom {
        padding: 0 20px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        min-height: 45px;
    }
    
    .main-nav-links {
        gap: 0;
    }
    
    .main-nav-links a {
        padding: 12px 12px;
        font-size: 12px;
    }
    
    .logo-container h1 {
        font-size: 20px;
    }
    
    .nav-right {
        gap: 10px;
        margin-left: 10px;
    }
    
    .nav-lang-switcher {
        padding: 4px;
    }
    
    .nav-lang-switcher button {
        padding: 4px 10px;
        font-size: 10px;
        min-width: 30px;
    }
    
    .main-content {
        margin-top: 115px;
    }
    
    .hero {
        min-height: calc(100vh - 115px);
    }
}

@media (max-width: 768px) {
    /* 在最小宽度下仍保持可用的桌面布局 */
    .header-top {
        padding: 10px 15px;
        min-height: 60px;
    }
    
    .header-bottom {
        padding: 0 15px;
        min-height: 40px;
    }
    
    .main-nav-links a {
        padding: 10px 8px;
        font-size: 11px;
    }
    
    .logo-container h1 {
        font-size: 18px;
    }
    
    .nav-lang-switcher button {
        padding: 3px 8px;
        font-size: 9px;
        min-width: 25px;
    }
    
    .main-content {
        margin-top: 100px;
    }
    
    .hero {
        min-height: calc(100vh - 100px);
    }
}

/* 超小屏幕调整 */
@media (max-width: 576px) {
    .logo-container h1 {
        font-size: 16px;
    }
    
    .main-nav-links a {
        padding: 8px 6px;
        font-size: 10px;
    }
    
    .nav-lang-switcher {
        flex-direction: column;
        gap: 2px;
    }
    
    .nav-lang-switcher button {
        padding: 2px 6px;
        font-size: 8px;
    }
}