/* 导航栏样式文件 - navigation.css */

/* 顶部导航样式 */
.main-nav {
    background: #FFFFFF;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo 样式 */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.logo-link:hover {
    transform: scale(1.05);
}

.logo-link:hover .logo-icon {
    filter: brightness(1.1);
}

.logo-link:hover h1 {
    background: linear-gradient(135deg, #FFB6C1, #FFC773);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    flex-shrink: 0;
}

.logo h1 {
    background: linear-gradient(135deg, #FFB6C1, #FFC773);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0;
}

/* 导航菜单样式 */
.nav-list {
    display: flex;
    list-style: none;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-color));
    color: white;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(173, 216, 230, 0.3);
}

/* 让导航中的按钮与链接在同一水平线上 */
.nav-list .btn {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-weight: 500;
    line-height: 1.2;
}
.nav-list .btn:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-color));
    color: white;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(173, 216, 230, 0.3);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover {
    background: var(--secondary-color);
    color: white;
}

/* 响应式导航设计 */

/* PC端 - 大屏幕 (1200px以上) */
@media (min-width: 1200px) {
    .nav-content {
        padding: 1rem 2rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .nav-list {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem;
        font-size: 1rem;
    }
}

/* 平板端 - 中等屏幕 (768px - 1199px) */
@media (min-width: 768px) and (max-width: 1199px) {
    .nav-content {
        padding: 1rem 1.5rem;
    }
    
    .logo h1 {
        font-size: 1.4rem;
    }
    
    .nav-list {
        gap: 0.8rem;
    }
    
    .nav-link {
        padding: 0.35rem 0.7rem;
        font-size: 0.95rem;
    }
}

/* 移动端 - 小屏幕 (480px - 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    .nav-content {
        padding: 0.8rem 1rem;
    }
    
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        gap: 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        padding: 1rem 0;
        z-index: 999; /* 确保菜单在内容之上 */
    }
    
    .nav-list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 0.8rem 1rem;
        border-radius: 0;
        font-size: 0.9rem;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    /* 移动端下按钮样式与链接一致 */
    .nav-list .btn {
        display: block;
        padding: 0.8rem 1rem;
        border-radius: 0;
        font-size: 0.9rem;
        border-bottom: 1px solid #f0f0f0;
        width: 100%;
        text-align: left;
    }
}

/* 超小屏幕 - 手机端 (479px以下) */
@media (max-width: 479px) {
    .nav-content {
        padding: 0.6rem 0.8rem;
    }
    
    .logo {
        gap: 0.5rem;
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
    }
    
    .mobile-menu-toggle {
        display: block;
        font-size: 1.3rem;
        padding: 0.4rem;
    }
    
    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        gap: 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        padding: 0.8rem 0;
        z-index: 999; /* 确保菜单在内容之上 */
    }
    
    .nav-list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: 0.7rem 0.8rem;
        border-radius: 0;
        font-size: 0.85rem;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    /* 超小屏下按钮样式与链接一致 */
    .nav-list .btn {
        display: block;
        padding: 0.7rem 0.8rem;
        border-radius: 0;
        font-size: 0.85rem;
        border-bottom: 1px solid #f0f0f0;
        width: 100%;
        text-align: left;
    }
}

/* 确保导航栏在所有设备上都固定在顶部 */
@media (max-width: 767px) {
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
    }
}