/* ==================== CSS Variables ==================== */
:root {
    --color-primary: #1a237e;
    --color-secondary: #607d8b;
    --color-cta: #f97316;
    --color-bg: #f8fafc;
    --color-text: #334155;
    --color-text-light: #64748b;
    --color-white: #ffffff;
    --color-border: #e2e8f0;

    --font-primary: 'Noto Sans TC', sans-serif;

    --container-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --transition: all 0.3s ease;
}

/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==================== Typography ==================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.125rem;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--color-cta);
}

.subsection-title {
    font-size: 1.5rem;
    margin: var(--spacing-lg) 0 var(--spacing-md);
    color: var(--color-primary);
}

/* ==================== Navigation ==================== */
.navbar {
    background: var(--color-white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    height: 50px;
    width: auto;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-menu a {
    padding: 0.5rem 1rem;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition);
}

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

/* ==================== Hero Section ==================== */
.hero {
    position: relative;
    height: 90vh;
    min-height: 500px;
    background: url('assets/images/hero-banner.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26,35,126,0.85), rgba(96,125,139,0.75));
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    font-weight: 900;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.btn-cta {
    display: inline-block;
    background: var(--color-cta);
    color: var(--color-white);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(249,115,22,0.4);
}

.btn-cta:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(249,115,22,0.5);
}

/* ==================== Stats Section ==================== */
.stats {
    background: var(--color-white);
    padding: var(--spacing-lg) 0;
    border-top: 4px solid var(--color-cta);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 500;
}

/* ==================== Features Section ==================== */
.features {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ==================== About Section ==================== */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.about-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-content .highlight {
    background: linear-gradient(120deg, rgba(249,115,22,0.1) 0%, rgba(249,115,22,0.2) 100%);
    padding: 1.5rem;
    border-left: 4px solid var(--color-cta);
    border-radius: 8px;
    font-weight: 500;
    font-size: 1.125rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.value-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: 12px;
    transition: var(--transition);
}

.value-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.value-item img {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
}

.value-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

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

/* ==================== Facilities Section ==================== */
.facilities {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.facility-block {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.facility-title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--color-cta);
}

.facility-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.facility-info h4 {
    color: var(--color-primary);
    margin: 1.5rem 0 0.75rem;
}

.facility-info h4:first-child {
    margin-top: 0;
}

.facility-info ul {
    list-style: disc;
    margin-left: 1.5rem;
}

.facility-info ul li {
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.facility-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.facility-images img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.facility-images img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* ==================== Services Section ==================== */
.services {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.service-card {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: 12px;
    border-top: 4px solid var(--color-cta);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.service-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.temp-range {
    display: inline-block;
    background: var(--color-cta);
    color: var(--color-white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.suitable-for {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.flow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.flow-step {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: 12px;
    position: relative;
}

.flow-number {
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    margin: 0 auto 1rem;
}

.flow-step h4 {
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

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

/* ==================== FAQ Section ==================== */
.faq {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.faq-item h3 {
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.faq-item p {
    color: var(--color-text);
    line-height: 1.7;
}

/* ==================== Contact Section ==================== */
.contact {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contact-item {
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: 8px;
}

.contact-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--color-text);
    line-height: 1.6;
}

.contact-item a {
    color: var(--color-cta);
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

.map-container {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

/* ==================== Contact Form ==================== */
.contact-form-wrapper {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.contact-form-wrapper h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cta);
    box-shadow: 0 0 0 3px rgba(249,115,22,0.15);
}

/* ==================== Footer ==================== */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    width: 120px;
    height: auto;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}

.footer-logo p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1rem;
    color: var(--color-cta);
}

.footer-links ul li,
.footer-contact p {
    margin-bottom: 0.5rem;
    opacity: 0.85;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.2);
    opacity: 0.8;
}

/* ==================== Responsive ==================== */
@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1.5fr;
        align-items: start;
    }

    .facility-grid {
        grid-template-columns: 1fr 1.2fr;
    }

    .contact-grid {
        grid-template-columns: 1fr 1.5fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: 0;
        width: 70%;
        height: calc(100vh - 70px);
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: -2px 0 8px rgba(0,0,0,0.1);
        transition: transform 0.3s ease;
        transform: translateX(100%);
        gap: 0;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li {
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu a {
        display: block;
        padding: 1rem 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .flow-steps {
        grid-template-columns: 1fr;
    }

    .hero {
        height: 70vh;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}