/*
Theme Name: Zalo Custom Apple Style
Description: High-performance, modular monolithic stylesheet. 
Version: 1.0.0
*/

/**
 * @section 01_CORE_ENGINE
 * Baseline resets and global design tokens.
 */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

html { 
    scroll-behavior: smooth; 
    -webkit-font-smoothing: antialiased; 
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #1d1d1f; /* Apple's primary text color */
    background-color: #ffffff;
    font-size: 16px;
    overflow-x: hidden;
}

/* Global Layout Constraint */
.container { 
    max-width: 1400px; 
    margin: 0 auto; 
    padding: 0 40px; 
}

/**
 * @section 02_ANIMATIONS_AND_UTILS
 * Reusable micro-interactions and atomic classes.
 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in { 
    animation: fadeIn 0.6s cubic-bezier(0.25, 1, 0.5, 1) forwards; 
}

/* UI Component: Capsule Button */
.apple-btn {
    display: inline-block;
    background: #0071e3;
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 980px; /* Infinite radius for pill shape */
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.apple-btn:hover { 
    background: #0077ed; 
    transform: scale(1.02);
}

/**
 * @section 03_SITE_HEADER
 * Sticky navigation engine with multi-level dropdown support.
 */
.site-header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px); /* Frosted glass effect */
    border-bottom: 1px solid #f2f2f7;
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.header-content { 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    gap: 90px; 
}

/* Branding Logic */
.site-logo .logo-link { display: flex; align-items: center; text-decoration: none; margin-right: 80px}
.logo-img { height: 70px; width: auto; display: block; }
.logo-text { font-size: 22px; font-weight: 700; color: #1d1d1f; letter-spacing: -0.5px; }

/* Main Navigation Menu */
.main-navigation .nav-menu { 
    display: flex; 
    list-style: none; 
    gap: 38px; 
    position: relative;
}

.main-navigation .nav-menu li {
    position: relative; 
    display: flex;
    align-items: center;
}

.main-navigation .nav-menu li a {
    color: #1d1d1f;
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    transition: color 0.3s;
}

.main-navigation .nav-menu li a:hover { color: #0071e3; }

/* WP Dropdown Implementation */
.main-navigation .nav-menu li .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: #ffffff;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    border-radius: 12px;
    padding: 12px 0;
    display: none; 
    z-index: 9999;
    border: 1px solid #f2f2f7;
}

.main-navigation .nav-menu li:hover > .sub-menu {
    display: block;
    animation: fadeIn 0.2s ease-out;
}

/* Tertiary Level (Horizontal Fly-out) */
.main-navigation .nav-menu li .sub-menu li .sub-menu {
    top: 0;
    left: 100%;
    margin-left: 2px;
}

/* Nav Hover State Indicator */
.main-navigation .nav-menu li::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 30px;
    height: 3px;
    background: #0071e3;
    border-radius: 3px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-navigation .nav-menu li:hover::after { transform: translateX(-50%) scaleX(1); }

/* Breadcrumb Styling */
#global-breadcrumbs { 
    background: #fbfbfd; 
    border-bottom: 1px solid #d2d2d7; 
    padding: 14px 0; 
    margin-bottom: 30px; 
    font-size: 14px; 
    color: #6e6e73; 
}

/**
 * @section 04_PAGE_MODULES
 * Styles for specific page templates (Home, Archive, Single).
 */
/* Archive/Single Title Defaults */
.entry-title { font-weight: 700; letter-spacing: -0.02em; }
.entry-content { color: #424245; }

/**
 * @section 05_SITE_FOOTER
 * Footer layout with dark-mode contrast.
 */
.site-footer {
    background-color: #161617;
    color: #a1a1a6;
    padding: 60px 0 40px;
    font-size: 12px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr 1.5fr;
    gap: 40px;
    border-bottom: 1px solid #424245;
    padding-bottom: 40px;
    margin-bottom: 20px;
}

.footer-title { color: #f5f5f7; font-weight: 600; margin-bottom: 16px; }
.footer-list { list-style: none; }
.footer-list li { margin-bottom: 10px; }
.footer-list a { color: #a1a1a6; text-decoration: none; transition: color 0.2s; }
.footer-list a:hover { color: #ffffff; text-decoration: underline; }

.footer-bottom { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    color: #86868b; 
}

/**
 * @section 06_RESPONSIVE_PATCH
 * Breakpoint management for Tablet and Mobile devices.
 */

/* Medium Devices (Tablets) */
@media (max-width: 1024px) {
    .container { max-width: 90%; padding: 0 30px; }
    .header-content { gap: 40px; }
}

/* Small Devices (Mobiles) */
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    
    /* Header/Nav Stack */
    .header-content { flex-direction: column; gap: 20px; }
    .main-navigation .nav-menu { flex-direction: column; gap: 15px; text-align: center; }
    
    /* Force dropdowns to static flow on mobile */
    .main-navigation .nav-menu li .sub-menu {
        position: static;
        box-shadow: none;
        border: none;
        display: block; 
        padding-left: 20px;
        background: transparent;
    }
    
    /* Footer Grid: Stack to 2 columns */
    .footer-content { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
}

/* Extra Small Devices */
@media (max-width: 480px) {
    .footer-content { grid-template-columns: 1fr; }
}

/* 导航栏补丁*/
/* ========== 导航栏优化版 ========== */
.site-header {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(191, 219, 254, 0.5); /* 淡蓝分割线 */
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.06);
    transition: background 0.3s;
}

/* 滚动时背景稍微变实一点，可配合 JS 添加类，这里先保留 */
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.1);
}

/* 导航菜单 */
.main-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 38px;
}

.main-navigation .nav-menu li a {
    color: #1e293b;           /* 深蓝灰，比纯黑柔和 */
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    transition: color 0.2s;
}

.main-navigation .nav-menu li a:hover {
    color: #2563eb;
}

/* 悬浮下划线改成渐变小条 */
.main-navigation .nav-menu li::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 24px;
    height: 3px;
    background: linear-gradient(to right, #3b82f6, #60a5fa);
    border-radius: 3px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-navigation .nav-menu li:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* 下拉菜单 */
.main-navigation .nav-menu li .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.1);
    border-radius: 16px;
    padding: 8px 0;
    display: none;
    z-index: 9999;
    border: 1px solid rgba(191, 219, 254, 0.6);
}

.main-navigation .nav-menu li:hover > .sub-menu {
    display: block;
    animation: fadeIn 0.25s ease-out;
}

/* 下拉菜单项 */
.main-navigation .nav-menu li .sub-menu li a {
    padding: 10px 20px;
    display: block;
    font-size: 16px;
    color: #334155;
}

.main-navigation .nav-menu li .sub-menu li a:hover {
    background: #eff6ff;
    color: #2563eb;
}

/* 三级菜单（如有）微调 */
.main-navigation .nav-menu li .sub-menu li .sub-menu {
    top: 0;
    left: 100%;
    margin-left: 4px;
}

/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
    .site-header {
        backdrop-filter: none;
        background: rgba(255, 255, 255, 0.95);
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }

    .main-navigation .nav-menu {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .main-navigation .nav-menu li .sub-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: transparent;
        backdrop-filter: none;
        display: block;
        padding-left: 20px;
    }

    .main-navigation .nav-menu li::after {
        display: none; /* 移动端隐藏下划线 */
    }
}

/**
 * @section 05_SITE_FOOTER (Official Zalo Dark Mode)
 */
.site-footer {
    background-color: #161617;
    color: #86868b;
    padding: 80px 0 40px;
    font-size: 14px;
    border-top: 1px solid #333336;
}

/* 移除链接下划线，改用颜色变化 */
.footer-list a { 
    color: #86868b; 
    text-decoration: none; 
    transition: color 0.2s ease; 
}

/* 这里的蓝色使用 Zalo 官方质感的科技蓝 */
.footer-list a:hover { 
    color: #0068ff; 
    text-decoration: none; 
}

/* 品牌标题高亮 */
.brand-info .footer-title {
    font-size: 20px;
    letter-spacing: 0.5px;
    color: #ffffff;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #00d959;
    border-radius: 50%;
    /* 呼吸灯特效，增强官方在线感 */
    box-shadow: 0 0 8px rgba(0, 217, 89, 0.6);
    animation: pulseStatus 2s infinite;
}

@keyframes pulseStatus {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* 底部法律链接间隔 */
.footer-legal a {
    margin-left: 20px;
    color: #424245;
}

.footer-legal a:hover {
    color: #86868b;
}