/**
 * ランテース・ジャンパン合同会社 - 導航栏样式
 * 和纸主题配色 + 固定导航功能
 */

/* 导航栏基础样式 - 和纸主题 */
.navbar {
    padding: 1.2rem 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(250, 248, 243, 0.95) !important;  /* 和纸基础色 */
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(229, 225, 216, 0.6);  /* 和纸边框色 */
    position: fixed;  /* 固定定位 */
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;   /* 确保在其他内容之上 */
    box-shadow: 0 2px 12px rgba(74, 111, 165, 0.08);  /* 和纸阴影 */
}

/* 为固定导航栏添加纸质纹理 */
.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(74, 111, 165, 0.08) 1px, transparent 0),
        radial-gradient(circle at 3px 3px, rgba(74, 111, 165, 0.04) 1px, transparent 0);
    background-size: 4px 4px;
    pointer-events: none;
    opacity: 0.6;
}

/* 滚动时的导航栏样式 */
.navbar.navbar-scrolled {
    padding: 0.8rem 0;
    background: rgba(255, 255, 255, 0.98) !important;  /* 滚动时更白 */
    box-shadow: 0 4px 24px rgba(74, 111, 165, 0.12);   /* 增强阴影 */
    border-bottom: 1px solid rgba(74, 111, 165, 0.15); /* 更明显的边框 */
}

.navbar.navbar-scrolled::before {
    opacity: 0.8;  /* 滚动时增强纹理 */
}

/* 品牌标志样式 - 和纸主题（只有logo） */
.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 500;
    color: #3d4142 !important;  /* 深墨色 */
    transition: all 0.3s ease;
    z-index: 10;
    position: relative;
    padding: 0.5rem 0;  /* 增加上下内边距以保持导航栏高度 */
}

.navbar-brand:hover {
    transform: translateY(-1px);
    color: #4a6fa5 !important;  /* 藍鼠色 */
}

.navbar-brand .logo {
    height: 48px;  /* 增加logo高度 */
    width: auto;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(74, 111, 165, 0.1));
}

.navbar-brand:hover .logo {
    transform: scale(1.05) rotate(1deg);
}

/* 移除品牌文字相关样式 */
.brand-text {
    display: none;
}

/* 导航菜单样式 - 和纸主题 */
.navbar-nav {
    align-items: center;
    position: relative;
    z-index: 10;
}

/* 菜单项样式 */
.nav-item {
    margin: 0 0.1rem;
    position: relative;
}

/* 菜单分隔线样式 */
.nav-separator {
    width: 1px;
    height: 24px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(74, 111, 165, 0.3) 20%, 
        rgba(74, 111, 165, 0.6) 50%, 
        rgba(74, 111, 165, 0.3) 80%, 
        transparent 100%);
    margin: 0 0.8rem;
    align-self: center;
    position: relative;
}

/* 为分隔线添加和纸风格 */
.nav-separator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 3px;
    height: 20px;
    background: rgba(74, 111, 165, 0.1);
    border-radius: 2px;
    filter: blur(1px);
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0.8rem 1.2rem;
    color: #3d4142 !important;  /* 深墨色 */
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    letter-spacing: 0.3px;
    backdrop-filter: blur(5px);
}

/* 导航链接悬停效果 - 和纸风格 */
.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(74, 111, 165, 0.1) 0%, 
        rgba(107, 139, 199, 0.05) 100%);
    border-radius: 8px;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: -1;
}

.nav-link i {
    margin-right: 0.6rem;
    font-size: 0.9rem;
    color: #4a6fa5;  /* 藍鼠色 */
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #4a6fa5 !important;  /* 藍鼠色 */
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 111, 165, 0.15);
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link:hover i {
    color: #364f7a;  /* 深藍鼠色 */
    transform: scale(1.1);
}

.nav-link.active {
    color: #4a6fa5 !important;  /* 藍鼠色 */
    background: linear-gradient(135deg, 
        rgba(74, 111, 165, 0.15) 0%, 
        rgba(107, 139, 199, 0.08) 100%);
    box-shadow: 0 2px 8px rgba(74, 111, 165, 0.1);
}

.nav-link.active i {
    color: #364f7a;  /* 深藍鼠色 */
}

/* 特殊样式 - 联系我们按钮 (和纸风格) */
.nav-link.contact-link {
    background: linear-gradient(135deg, #4a6fa5 0%, #6b8bc7 100%);  /* 藍鼠色渐变 */
    color: white !important;
    margin-left: 0.5rem;  /* 减少左边距 */
    border-radius: 25px;
    padding: 0.8rem 1.8rem;
    box-shadow: 0 3px 12px rgba(74, 111, 165, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-link.contact-link::before {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.2) 0%, 
        rgba(255, 255, 255, 0.1) 100%);
}

.nav-link.contact-link i {
    color: white;
}

.nav-link.contact-link:hover {
    background: linear-gradient(135deg, #364f7a 0%, #4a6fa5 100%);  /* 深藍鼠色渐变 */
    color: white !important;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(74, 111, 165, 0.35);
}

.nav-link.contact-link:hover i {
    color: white;
    transform: scale(1.1) rotate(5deg);
}

/* 下拉菜单样式 - 和纸主题 */
.dropdown-menu {
    border: 1px solid rgba(229, 225, 216, 0.8);  /* 和纸边框色 */
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(74, 111, 165, 0.15);
    padding: 0.8rem 0;
    margin-top: 0.8rem;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    animation: dropdownFadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* 为下拉菜单添加和纸纹理 */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(74, 111, 165, 0.06) 1px, transparent 0),
        radial-gradient(circle at 3px 3px, rgba(74, 111, 165, 0.03) 1px, transparent 0);
    background-size: 4px 4px;
    pointer-events: none;
    opacity: 0.7;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-15px) scale(0.95);
        filter: blur(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.dropdown-item {
    padding: 1rem 1.8rem;
    color: #3d4142;  /* 深墨色 */
    font-weight: 400;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 3px solid transparent;
    font-family: 'Noto Sans JP', sans-serif;
    position: relative;
    z-index: 10;
}

.dropdown-item:hover {
    background: linear-gradient(90deg, 
        rgba(74, 111, 165, 0.1) 0%, 
        rgba(107, 139, 199, 0.05) 100%);
    color: #4a6fa5;  /* 藍鼠色 */
    border-left-color: #4a6fa5;  /* 藍鼠色 */
    padding-left: 2rem;
    transform: translateX(3px);
}

.dropdown-divider {
    margin: 0.8rem 1.5rem;
    border-top: 1px solid rgba(229, 225, 216, 0.6);  /* 和纸边框色 */
}

/* 移动端菜单切换按钮 - 和纸主题 */
.navbar-toggler {
    border: 2px solid rgba(74, 111, 165, 0.3);
    padding: 0.6rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
    border-color: #4a6fa5;
}

.navbar-toggler:hover {
    background: rgba(74, 111, 165, 0.1);
    border-color: #4a6fa5;
    transform: scale(1.05);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2874, 111, 165, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    width: 1.5em;
    height: 1.5em;
}

/* 为页面内容添加顶部间距以适应固定导航栏 */
body {
    padding-top: 85px;  /* 增加padding以适应更大的logo */
}

/* 滚动时调整body的padding */
body.navbar-scrolled {
    padding-top: 80px;
}

/* 响应式设计 - 和纸主题 */
@media (max-width: 991.98px) {
    body {
        padding-top: 80px;
    }
    
    body.navbar-scrolled {
        padding-top: 75px;
    }
    
    .navbar {
        padding: 1rem 0;
    }
    
    .navbar-brand .logo {
        height: 42px;  /* 移动端稍小的logo */
    }
    
    /* 移动端隐藏分隔线 */
    .nav-separator {
        display: none;
    }
    
    .navbar-collapse {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .nav-link {
        padding: 1rem;
        margin: 0.25rem 0;
        border-radius: 8px;
        background-color: rgba(0, 0, 0, 0.02);
    }
    
    .nav-link.contact-link {
        margin: 1rem 0 0 0;
        text-align: center;
    }
    
    .dropdown-menu {
        border: none;
        box-shadow: none;
        background-color: rgba(44, 90, 160, 0.05);
        margin: 0.5rem 0 0 1rem;
        border-radius: 8px;
    }
    
    .dropdown-item {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 575.98px) {
    .navbar-brand .logo {
        height: 36px;  /* 小屏幕更小的logo */
    }
    
    .nav-link {
        padding: 0.875rem;
        font-size: 0.95rem;
    }
    
    .nav-link i {
        font-size: 0.85rem;
    }
}

/* 平滑过渡效果 */
.navbar,
.nav-link,
.dropdown-menu,
.dropdown-item,
.nav-separator {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 可访问性改进 */
.nav-link:focus,
.dropdown-item:focus {
    outline: 2px solid #2c5aa0;
    outline-offset: 2px;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .navbar {
        border-bottom: 2px solid #000;
    }
    
    .nav-link {
        border: 1px solid transparent;
    }
    
    .nav-link:hover,
    .nav-link.active {
        border-color: #2c5aa0;
    }
    
    .nav-separator {
        background: #000;
    }
}