/* ============================================ */
/* VARIABLES */
/* ============================================ */
:root {
    --green: #2E7D32;
    --green-light: #E8F5E9;
    --green-hover: #1B5E20;
    --text-dark: #1B2E1B;
    --text-light: #4A5B4A;
    --white: #fff;
    --off-white: #F9FBF9;
}

/* ============================================ */
/* RESET & BASE */
/* ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================ */
/* TYPOGRAPHY */
/* ============================================ */
h1, h2, h3, h4 {
    line-height: 1.2;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.2rem; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.5rem; }

.section-lead {
    max-width: 700px;
    margin: 0 auto 2rem;
    color: var(--text-light);
    text-align: center;
}

/* ============================================ */
/* BUTTONS */
/* ============================================ */
.btn {
    display: inline-block;
    background: var(--green);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    transition: 0.25s;
    font-weight: 500;
    text-align: center;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: var(--green-hover);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 3rem;
}

/* ============================================ */
/* NAVIGATION - FIXED FOR ALL BROWSERS */
/* ============================================ */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Desktop navbar (all browsers) */
@media (min-width: 769px) {
    .navbar {
        padding: 0.6rem 0;
    }
    
    .nav-brand img {
        height: 44px;
        width: auto;
        display: block;
    }
    
    .nav-menu {
        gap: 1.8rem;
    }
    
    .nav-menu a {
        font-size: 0.95rem;
    }
    
    .nav-right {
        gap: 1rem;
    }
    
    .language-switcher {
        font-size: 0.85rem;
    }
}

/* Large desktop */
@media (min-width: 1400px) {
    .navbar {
        padding: 0.7rem 0;
    }
    
    .nav-brand img {
        height: 48px;
    }
    
    .nav-menu {
        gap: 2rem;
    }
    
    .nav-menu a {
        font-size: 1rem;
    }
}

/* Mobile navbar */
@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 0;
    }
    
    .nav-brand img {
        height: 38px;
    }
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.nav-brand {
    flex-shrink: 0;
}

.nav-brand a {
    display: block;
    line-height: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: 0.2s;
    white-space: nowrap;
}

.nav-menu a:hover {
    color: var(--green);
}

.nav-right {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* Language Switcher */
.lang-wrapper {
    display: block;
    flex-shrink: 0;
}

.language-switcher {
    white-space: nowrap;
}

.language-switcher a {
    text-decoration: none;
    color: var(--text-dark);
    padding: 0 3px;
    transition: 0.2s;
}

.language-switcher a:hover {
    color: var(--green);
}

.language-switcher a.active {
    color: var(--green);
    font-weight: 600;
}

.language-switcher .sep {
    margin: 0 2px;
    color: var(--text-light);
}

/* Hamburger */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================ */
/* MOBILE MENU */
/* ============================================ */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 60px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        gap: 1.5rem;
        padding: 2rem;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu a {
        display: block;
        padding: 0.75rem;
        font-size: 1.1rem;
    }
    
    .nav-right {
        gap: 0.75rem;
    }
    
    .language-switcher {
        font-size: 0.8rem;
    }
}

/* ============================================ */
/* SECTIONS */
/* ============================================ */
section {
    padding: 6rem 0;
}

.hero {
    background: linear-gradient(135deg, var(--green-light), white);
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    margin-bottom: 1rem;
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto 2rem;
    color: var(--text-light);
}

@media (max-width: 768px) {
    section, .hero {
        padding: 3rem 0;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.2rem; }
    
    .hero h1 { font-size: 1.8rem; }
}

/* ============================================ */
/* GRIDS */
/* ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 3rem;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .about-grid,
    .services-grid,
    .cases-grid,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* ============================================ */
/* CARDS */
/* ============================================ */
.about-card {
    background: var(--off-white);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: 0.2s;
}

.about-card:hover {
    transform: translateY(-5px);
}

.about-card i {
    font-size: 2rem;
    color: var(--green);
    margin-bottom: 1rem;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 30px;
    text-align: center;
    transition: 0.2s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.icon-circle {
    width: 80px;
    height: 80px;
    background: var(--green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.icon-circle i {
    font-size: 30px;
    color: var(--green);
}

.card-sub {
    color: var(--green);
    margin-bottom: 10px;
    font-weight: 500;
}

.card-desc {
    color: var(--text-light);
    margin-bottom: 20px;
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    background: var(--off-white);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 13px;
}

.trust-badge {
    text-align: center;
    margin-top: 2rem;
    color: var(--green);
    font-weight: 500;
}

.case-card {
    background: var(--off-white);
    padding: 2rem;
    border-radius: 20px;
    transition: 0.2s;
}

.case-card:hover {
    transform: translateY(-5px);
}

.contact {
    text-align: center;
    background: linear-gradient(135deg, var(--green-light), white);
}

@media (max-width: 768px) {
    .service-card {
        padding: 2rem 1.5rem;
    }
    
    .icon-circle {
        width: 60px;
        height: 60px;
    }
    
    .icon-circle i {
        font-size: 24px;
    }
    
    .btn, .btn-large {
        display: block;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
        padding: 0.8rem 1.5rem;
    }
}

/* ============================================ */
/* FOOTER */
/* ============================================ */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0;
}

.footer-brand img {
    height: 40px;
    width: auto;
    margin-bottom: 10px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
}

.footer a:hover {
    opacity: 1;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-social {
    text-align: center;
    margin-bottom: 1.5rem;
}

.footer-social a {
    margin: 0 10px;
    font-size: 1.125rem;
}

.footer-bottom {
    text-align: center;
    opacity: 0.6;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .footer-content {
        text-align: center;
    }
    
    .footer-links {
        align-items: center;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-social {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }
}

/* ============================================ */
/* CHINESE LANGUAGE - SITE WIDE */
/* ============================================ */

/* Chinese font stack */
:lang(zh-CN) body,
[lang="zh-CN"] body {
    font-family: "Inter", "Microsoft YaHei", "微软雅黑", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

/* Chinese headings */
:lang(zh-CN) h1,
:lang(zh-CN) h2,
:lang(zh-CN) h3,
[lang="zh-CN"] h1,
[lang="zh-CN"] h2,
[lang="zh-CN"] h3 {
    line-height: 1.4;
}

/* Chinese text spacing */
:lang(zh-CN) p,
:lang(zh-CN) li,
[lang="zh-CN"] p,
[lang="zh-CN"] li {
    line-height: 1.65;
}

/* Chinese buttons */
:lang(zh-CN) .btn,
[lang="zh-CN"] .btn {
    letter-spacing: 1px;
}

/* Chinese nav links - slightly smaller on desktop */
@media (min-width: 769px) {
    :lang(zh-CN) .nav-menu a,
    [lang="zh-CN"] .nav-menu a {
        font-size: 0.9rem;
    }
}

/* Chinese price page */
:lang(zh-CN) .fee-name,
[lang="zh-CN"] .fee-name {
    font-size: 1.5rem;
}

:lang(zh-CN) .fee-price,
[lang="zh-CN"] .fee-price {
    font-size: 1.8rem;
}

@media (max-width: 768px) {
    :lang(zh-CN) .fee-name,
    [lang="zh-CN"] .fee-name {
        font-size: 1.2rem;
    }
    
    :lang(zh-CN) .fee-price,
    [lang="zh-CN"] .fee-price {
        font-size: 1.5rem;
    }
}

/* Chinese path cards */
:lang(zh-CN) .path-card h3,
[lang="zh-CN"] .path-card h3 {
    font-size: 1.6rem;
}

@media (max-width: 768px) {
    :lang(zh-CN) .path-card h3,
    [lang="zh-CN"] .path-card h3 {
        font-size: 1.3rem;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .nav-right {
        gap: 0.5rem;
    }
    
    .language-switcher {
        font-size: 0.7rem;
    }
    
    .nav-brand img {
        height: 32px;
    }
    
    .btn, .btn-large {
        max-width: 100%;
    }
    
    :lang(zh-CN) .hero h1,
    [lang="zh-CN"] .hero h1 {
        font-size: 1.5rem;
    }
}