/* Modern Reset & Base Styles */
:root {
    --primary-green: #004d40;
    --primary-gold: #d4af37;
    --secondary-gold: #f2d06b;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --transition: all 0.3s ease;
    --font-main: 'Inter', system-ui, sans-serif;
    --font-heading: 'Noto Sans TC', system-ui, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--primary-green);
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold), var(--secondary-gold));
    color: var(--primary-green);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 0.9;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Header & Navigation */
.site-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

.logo-gold {
    color: var(--primary-gold);
}

.header-logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.company-name {
    font-size: 1.25rem;
    color: var(--primary-green);
    font-weight: 700;
    white-space: nowrap;
}

.main-nav ul {
    display: flex;
    gap: 2rem;
}

.main-nav a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-gold);
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--primary-gold);
}

.main-nav a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-green);
    margin: 5px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 85vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at top right, rgba(212, 175, 55, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(0, 77, 64, 0.05), transparent 40%);
    overflow: hidden;
}

.hero-content {
    max-width: 650px;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-green);
}

.text-gold {
    color: var(--primary-gold);
    background: -webkit-linear-gradient(45deg, var(--primary-gold), #b8860b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.hero-desc {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Section Common Styles */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-green);
}

.section-header .subtitle {
    color: var(--primary-gold);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.9rem;
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.feature-list li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.icon-check {
    color: var(--primary-gold);
    font-weight: bold;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--primary-gold);
}

.service-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    background: var(--bg-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.contact-info {
    background: var(--primary-green);
    color: rgba(255, 255, 255, 0.9);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
}

.contact-info h3 {
    color: var(--primary-gold);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-form {
    padding: 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
}

/* Footer */
.site-footer {
    background-color: var(--primary-green);
    color: #fff;
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 2rem;
}

.footer-logo {
    /* REMOVED text styles as it now contains an image */
    display: flex;
    align-items: center;
}

.footer-logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a:hover {
    color: var(--primary-gold);
}

.footer-bottom {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Animations - Fade In Up */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-header .container {
        padding: 0 20px;
    }

    .mobile-menu-toggle {
        display: block;
        z-index: 1001;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        /* Hidden by default */
        width: 100%;
        height: 100vh;
        background-color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: right 0.4s ease;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }

    .main-nav a {
        font-size: 1.25rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Language Toggle */
.lang-btn {
    background: transparent;
    border: 1px solid var(--primary-green);
    color: var(--primary-green);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    font-family: var(--font-main);
}

.lang-btn:hover {
    background: var(--primary-green);
    color: #fff;
    transform: translateY(-2px);
}

/* Mobile adjustments for lang button */
@media (max-width: 768px) {
    .lang-btn {
        border-color: var(--text-dark);
        color: var(--text-dark);
        width: 100%;
        text-align: center;
    }
}