/**
 * 导航栏增强样式
 * 作者: Claude Code
 * 日期: 2025-12-10
 * 说明: 智能导航栏、动画优化、移动端增强
 */

/* ==========================================================================
   导航栏基础优化
   ========================================================================== */

#header {
    padding-top: 12px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                background-color 0.3s ease,
                box-shadow 0.3s ease;
    will-change: transform;
}

#header .navbar {
    min-height: 72px;
    padding: 0;
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    background: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.82);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

#header .navbar .container {
    min-height: 72px;
    padding-left: 20px;
    padding-right: 20px;
}

#header.at-top .navbar {
    background: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.72);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}

#header.scrolled .navbar {
    background: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.94);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
}

#header.scrolled.blur .navbar {
    background: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.8);
}

/* 导航栏隐藏状态 (向下滚动) */
#header.nav-hide {
    transform: translateY(-100%);
}

/* 导航栏显示状态 (向上滚动/顶部) */
#header.nav-show {
    transform: translateY(0);
}

/* 滚动后状态 - 增加阴影和实体背景 */
#header.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    background-color: var(--pk-bg-box) !important;
}

#header.scrolled.blur {
    background-color: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.85) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

body.puock-dark #header.scrolled {
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}

body.puock-dark #header .navbar {
    border-color: rgba(255, 255, 255, 0.08);
    background: rgba(17, 24, 39, 0.78);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.32);
}

body.puock-dark #header.at-top .navbar {
    background: rgba(17, 24, 39, 0.66);
}

body.puock-dark #header.scrolled .navbar {
    background: rgba(17, 24, 39, 0.9);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

/* 顶部状态 - 半透明 */
#header.at-top {
    background-color: transparent !important;
    box-shadow: none !important;
}

#header.at-top.blur {
    background-color: rgba(var(--pk-bg-box-rgb, 255, 255, 255), 0.7) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* ==========================================================================
   Logo 动态缩放
   ========================================================================== */

#logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    max-height: 44px;
    padding: 8px 14px;
    border-radius: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#logo .txt-logo {
    font-weight: 700;
    letter-spacing: 0.02em;
}

#header.scrolled #logo {
    transform: scale(0.94);
}

#logo img {
    max-height: 32px;
    width: auto;
    transition: all 0.3s ease;
}

/* ==========================================================================
   桌面端菜单优化
   ========================================================================== */

#menus > ul > li {
    position: relative;
}

#menus > ul > li > a {
    position: relative;
    overflow: hidden;
}

/* 菜单项 Hover 波纹效果 */
#menus > ul > li > a::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(var(--bs-primary-rgb), 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

#menus > ul > li:hover > a::before {
    width: 200%;
    height: 200%;
}

/* ==========================================================================
   下拉菜单增强
   ========================================================================== */

#menus .sub-menu {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease,
                transform 0.3s ease,
                visibility 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

#menus > ul > li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    display: block !important;
}

/* 下拉菜单箭头指示 */
#menus > ul > li.menu-item-has-children > a .menu-sub-icon {
    transition: transform 0.2s ease;
}

#menus > ul > li.menu-item-has-children:hover > a .menu-sub-icon {
    transform: rotate(180deg);
}

/* 下拉菜单项动画 */
#menus .sub-menu li {
    opacity: 0;
    transform: translateX(-10px);
    animation: slideInFromLeft 0.3s ease forwards;
}

#menus .sub-menu li:nth-child(1) { animation-delay: 0.05s; }
#menus .sub-menu li:nth-child(2) { animation-delay: 0.1s; }
#menus .sub-menu li:nth-child(3) { animation-delay: 0.15s; }
#menus .sub-menu li:nth-child(4) { animation-delay: 0.2s; }
#menus .sub-menu li:nth-child(5) { animation-delay: 0.25s; }

@keyframes slideInFromLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 下拉菜单项 Hover */
#menus .sub-menu li a {
    position: relative;
}

#menus .sub-menu li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--pk-c-primary);
    transition: height 0.2s ease;
}

#menus .sub-menu li:hover a::before {
    height: 60%;
}

body.puock-dark #menus .sub-menu {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   搜索框优化
   ========================================================================== */

#search {
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

#search-main {
    animation: searchDropDown 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes searchDropDown {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#search .search-input input {
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

#search .search-input input:focus {
    border-color: var(--pk-c-primary);
    box-shadow: 0 0 0 3px rgba(var(--bs-primary-rgb), 0.1);
}

/* 搜索按钮动画 */
.search-modal-btn {
    transition: all 0.2s ease;
}

.search-modal-btn:hover {
    transform: scale(1.1);
    color: var(--pk-c-primary);
}

.search-modal-btn:active {
    transform: scale(0.95);
}

/* ==========================================================================
   移动端菜单增强
   ========================================================================== */

#mobile-menu {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-100%);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
}

#mobile-menu.show {
    transform: translateX(0);
}

/* 移动端菜单项动画 */
#mobile-menu nav > ul > li {
    opacity: 0;
    transform: translateX(-20px);
}

#mobile-menu.show nav > ul > li {
    animation: mobileMenuSlideIn 0.4s ease forwards;
}

#mobile-menu.show nav > ul > li:nth-child(1) { animation-delay: 0.1s; }
#mobile-menu.show nav > ul > li:nth-child(2) { animation-delay: 0.15s; }
#mobile-menu.show nav > ul > li:nth-child(3) { animation-delay: 0.2s; }
#mobile-menu.show nav > ul > li:nth-child(4) { animation-delay: 0.25s; }
#mobile-menu.show nav > ul > li:nth-child(5) { animation-delay: 0.3s; }
#mobile-menu.show nav > ul > li:nth-child(6) { animation-delay: 0.35s; }

@keyframes mobileMenuSlideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 移动端菜单项 */
#mobile-menu nav li a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

#mobile-menu nav li a:hover,
#mobile-menu nav li.menu-current a {
    background-color: rgba(var(--bs-primary-rgb), 0.08);
    transform: translateX(8px);
}

/* 移动端背景遮罩增强 */
#mobile-menu-backdrop,
#search-backdrop {
    transition: opacity 0.3s ease, backdrop-filter 0.3s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    background-color: rgba(0, 0, 0, 0.4);
}

body.puock-dark #mobile-menu-backdrop,
body.puock-dark #search-backdrop {
    background-color: rgba(0, 0, 0, 0.6);
}

/* 移动端关闭按钮 */
.mobile-menu-close {
    transition: all 0.2s ease;
}

.mobile-menu-close:hover {
    transform: rotate(90deg) scale(1.2);
    color: var(--pk-c-danger);
}

/* ==========================================================================
   移动端按钮组优化
   ========================================================================== */

.mobile-menus i {
    transition: all 0.2s ease;
    cursor: pointer;
}

.mobile-menus i:hover {
    color: var(--pk-c-primary);
    transform: scale(1.15);
}

.mobile-menus i:active {
    transform: scale(0.9);
}

/* 汉堡菜单按钮动画 */
.mobile-menu-s {
    position: relative;
}

.mobile-menu-s::before,
.mobile-menu-s::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: all 0.3s ease;
}

.mobile-menu-s::before {
    top: -6px;
}

.mobile-menu-s::after {
    bottom: -6px;
}

.mobile-menu-s.active::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-s.active::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ==========================================================================
   主题切换按钮优化
   ========================================================================== */

.colorMode {
    position: relative;
}

.colorMode::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: rgba(var(--bs-primary-rgb), 0.1);
    transition: transform 0.3s ease;
}

.colorMode:hover::before {
    transform: translate(-50%, -50%) scale(1);
}

/* ==========================================================================
   响应式优化
   ========================================================================== */

@media (max-width: 992px) {
    /* 平板设备 */
    #header {
        padding-top: 10px;
    }

    #header .navbar,
    #header .navbar .container {
        min-height: 64px;
    }

    #header .navbar {
        border-radius: 16px;
    }

    #header.scrolled #logo {
        transform: scale(0.88);
    }
}

@media (max-width: 576px) {
    /* 移动设备 */
    #header {
        padding-top: 8px;
    }

    #header .navbar,
    #header .navbar .container {
        min-height: 58px;
    }

    #header .navbar {
        border-radius: 14px;
    }

    #header .navbar .container {
        padding-left: 14px;
        padding-right: 14px;
    }

    #mobile-menu {
        width: 80vw;
        max-width: 320px;
    }

    #header.scrolled #logo {
        transform: scale(0.84);
    }

    #logo {
        padding: 6px 10px;
        max-height: 40px;
    }

    #logo img {
        max-height: 28px;
    }

    /* 移动端简化动画 */
    #menus .sub-menu {
        transition: none;
    }

    #mobile-menu nav li a:hover {
        transform: translateX(4px);
    }
}

/* ==========================================================================
   性能优化
   ========================================================================== */

#header,
#menus,
#mobile-menu,
#logo {
    backface-visibility: hidden;
    perspective: 1000px;
}

/* 减少重绘 */
#menus > ul > li,
#mobile-menu nav > ul > li {
    will-change: auto;
}

#header:hover,
#menus > ul > li:hover {
    will-change: transform;
}

/* ==========================================================================
   辅助功能优化
   ========================================================================== */

/* 去掉点击菜单后的浏览器焦点外框 */
#menus a:focus,
#mobile-menu a:focus {
    outline: none !important;
    box-shadow: none !important;
}

/* 桌面菜单：取消旧的背景/波纹效果，改用底部蓝线滑入 */
#menus > ul > li::after {
    display: none !important;
    opacity: 0 !important;
    transition: none !important;
}

#menus > ul > li > a::before {
    display: none !important;
    width: 0 !important;
    height: 0 !important;
    background: transparent !important;
    transition: none !important;
}

#menus .ripple,
#menus .ripple-animate {
    display: none !important;
    animation: none !important;
    opacity: 0 !important;
}

#menus > ul > li > a {
    position: relative;
    background: transparent !important;
    background-color: transparent !important;
    box-shadow: none !important;
    transition: color 0.2s ease !important;
    transform: none !important;
    animation: none !important;
}

/* 底部蓝线（默认隐藏，hover时从左往右滑入） */
#menus > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--pk-c-primary, #2563eb);
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#menus > ul > li:hover > a::after,
#menus > ul > li.menu-current > a::after {
    width: 100%;
}

#menus > ul > li:hover > a,
#menus > ul > li.menu-current > a,
#menus > ul > li:hover > a i,
#menus > ul > li.menu-current > a i {
    color: var(--pk-c-primary) !important;
}

#menus > ul > li > a *,
#menus > ul > li:hover > a *,
#menus > ul > li.menu-current > a * {
    transition: color 0.2s ease !important;
    transform: none !important;
    animation: none !important;
}

#menus > ul > li.menu-current > a .menu-sub-icon,
#menus > ul > li:hover > a .menu-sub-icon,
#menus > ul > li.menu-item-has-children:hover > a .menu-sub-icon {
    transform: none !important;
}

/* 移动端菜单同样取消蓝色底和位移动画，保留文字变蓝 */
#mobile-menu nav li a:hover,
#mobile-menu nav li.menu-current a,
#mobile-menu nav li a:focus,
#mobile-menu nav li a:active {
    background: transparent !important;
    background-color: transparent !important;
    transform: none !important;
    box-shadow: none !important;
    transition: color 0.12s ease !important;
    animation: none !important;
}

#mobile-menu nav li a:hover,
#mobile-menu nav li.menu-current a,
#mobile-menu nav li a:hover i,
#mobile-menu nav li.menu-current a i {
    color: var(--pk-c-primary) !important;
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}