/* Reset & Base Styles */
:root {
    --bg-color: #F8F8F8;
    --text-color: #333333;
    --accent-color: #A68B5B;
    /* Muted Gold for subtle elegance */
    --white: #FFFFFF;
    --black: #000000;
    --font-en: 'Inter', sans-serif;
    --font-zh: 'Noto Serif TC', serif;
    --font-heading: 'Playfair Display', serif;
}

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

html,
body {
    height: 100%;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-en);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Scrollbar */
.parallax-wrapper::-webkit-scrollbar {
    width: 8px;
}

.parallax-wrapper::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.parallax-wrapper::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 4px;
}

.parallax-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

body.zh {
    font-family: var(--font-zh);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3,
h4 {
    font-weight: 400;
    margin-bottom: 1rem;
}

h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    /* Larger, more dramatic */
    letter-spacing: -0.02em;
    line-height: 1.1;
}

h2 {
    font-family: var(--font-heading);
    font-size: 3rem;
    text-align: center;
    letter-spacing: -0.01em;
}

p {
    margin-bottom: 1.5rem;
    font-weight: 300;
    font-size: 1.05rem;
    color: #555;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 5%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--black);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    font-weight: 500;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-color);
}

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

.lang-btn {
    background: transparent;
    border: 1px solid var(--black);
    padding: 0.5rem 1.2rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: var(--black);
    color: var(--white);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--black);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    /* Height handled by parallax-group */
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.4));
}

.hero-content {
    color: var(--white);
    max-width: 900px;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    /* Ensure content centers vertically in the base layer */
}

.hero-content h1 {
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    font-size: 4.3rem;
    /* Increased even more */
}

.hero-content p {
    font-family: var(--font-heading);
    /* Switch to Heading font for elegance */
    font-size: 2rem;
    /* Increased even more */
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    /* Slightly heavier than 300 to match elegance */
    letter-spacing: 0;
    /* Reduced from 0.05em */
    font-style: italic;
    /* Adding italic for style, optional but often looks better with Playfair */
}

.cta-btn {
    display: inline-block;
    padding: 1.2rem 2.5rem;
    background: var(--white);
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid var(--white);
}

.cta-btn:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-3px);
}

/* Sections General */
.section {
    padding: 8rem 5%;
    background: var(--bg-color);
    position: relative;
    z-index: 2;
    /* Sit above parallax background if needed */
}

.container {
    max-width: 1300px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.line {
    width: 60px;
    height: 1px;
    background: var(--accent-color);
    margin: 1.5rem auto 0;
}

/* Vision & Mission */
.vision-mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.vm-card {
    padding: 3rem;
    background: var(--white);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease;
}

.vm-card:hover {
    transform: translateY(-10px);
}

.vm-card h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.mission-list li {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
}

.mission-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-size: 1.2rem;
}

/* Next Chapter */
.chapter-section {
    background: var(--white);
}

.chapter-content {
    display: flex;
    align-items: center;
    gap: 6rem;
}

.chapter-text {
    flex: 1;
}

.chapter-image {
    flex: 1;
    position: relative;
}

.chapter-image::after {
    content: '';
    position: absolute;
    top: 20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 1px solid var(--accent-color);
    z-index: -1;
}

.chapter-image img {
    width: 100%;
    height: auto;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1);
}

.chapter-text h4 {
    font-size: 1.3rem;
    font-style: italic;
    font-family: var(--font-heading);
    margin-bottom: 2.5rem;
    color: #888;
}

.highlight {
    font-weight: 500;
    color: var(--accent-color);
    font-size: 1.3rem;
    margin-top: 2.5rem;
    font-family: var(--font-heading);
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Contact */
.contact-wrapper {
    display: flex;
    gap: 5rem;
}

.contact-info {
    flex: 1;
}

.map-placeholder {
    flex: 1;
    height: 450px;
    background: #eee;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.contact-details p {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.social-links {
    margin-top: 3rem;
    display: flex;
    gap: 2rem;
}

.social-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--black);
    padding-bottom: 2px;
}

.social-links a:hover {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Footer */
footer {
    background: var(--black);
    color: var(--white);
    padding: 3rem 5%;
    text-align: center;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* Event Photos Section */
.events-section {
    background: var(--bg-color);
}

.events-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    margin-bottom: 1.5rem;
    border: 1px solid #ddd;
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem 2rem;
    background: var(--white);
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--black);
    transition: background 0.3s ease;
}

.accordion-header:hover {
    background: #f9f9f9;
}

.accordion-header .icon {
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.accordion-header.active .icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out;
    background: #fafafa;
}

.month-group {
    padding: 2rem;
    border-top: 1px solid #eee;
}

.month-group h4 {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    font-family: var(--font-heading);
}

.event-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.event-photo {
    aspect-ratio: 4/3;
    background: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.9rem;
    border-radius: 4px;
}

.placeholder {
    padding: 1rem;
    text-align: center;
}

/* Archives Section */
.archives-section {
    background: #fdfdfd;
}

.album-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.album-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.album-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

/* Event Modal (Full Screen Album View) */
.event-modal {
    display: none;
    position: fixed;
    z-index: 2500;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: #fff;
    overflow: hidden;
    animation: fadeIn 0.3s ease;
}

.event-modal-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    z-index: 10;
}

.event-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-family: var(--font-heading);
    color: var(--black);
    max-width: 80%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.close-modal-btn {
    font-size: 2rem;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    line-height: 1;
    transition: transform 0.3s ease, color 0.3s ease;
}

.close-modal-btn:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

.event-modal-body {
    height: 100%;
    padding-top: 100px;
    /* Header height + spacing */
    padding-bottom: 50px;
    padding-left: 5%;
    padding-right: 5%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Updated Event Grid for Modal */
.event-modal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.modal-photo-item {
    aspect-ratio: 4/3;
    background: #f0f0f0;
    overflow: hidden;
    border-radius: 4px;
    cursor: zoom-in;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.modal-photo-item:hover {
    transform: scale(1.02);
}

.modal-photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Album Card in Accordion (formerly event-grid items) */
.album-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.album-preview-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.album-preview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
}

.album-preview-cover {
    aspect-ratio: 16/9;
    background: #eee;
    overflow: hidden;
}

.album-preview-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.album-preview-card:hover .album-preview-cover img {
    transform: scale(1.05);
}

.album-preview-info {
    padding: 1.2rem;
}

.album-preview-info h4 {
    margin: 0 0 0.5rem 0;
    color: var(--black);
    font-size: 1.1rem;
    font-family: var(--font-heading);
}

.album-preview-info span {
    font-size: 0.85rem;
    color: #888;
}

.album-cover {
    aspect-ratio: 4/3;
    overflow: hidden;
    background: #eee;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.album-card:hover .album-cover img {
    transform: scale(1.05);
}

.album-info {
    padding: 1.5rem;
}

.album-info h4 {
    margin: 0;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    color: var(--black);
}

.album-info span {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: #888;
}

.album-view {
    animation: fadeIn 0.5s ease;
}

.back-to-albums-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    font-size: 1rem;
    color: var(--accent-color);
    cursor: pointer;
    margin-bottom: 2rem;
    padding: 0;
    font-family: var(--font-en);
    transition: color 0.3s ease;
}

.back-to-albums-btn:hover {
    color: var(--black);
}

#current-album-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Upcoming Events Section */
.upcoming-section {
    background: #1a1a1a;
    color: var(--white);
    text-align: center;
    padding: 8rem 5%;
}

.upcoming-content {
    max-width: 800px;
    margin: 0 auto;
}

.upcoming-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--accent-color);
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.8rem;
    margin-bottom: 2rem;
    border-radius: 50px;
}

.upcoming-section h2 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.upcoming-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

.upcoming-poster {
    max-width: 400px;
    margin: 0 auto;
    aspect-ratio: 2/3;
    background: #2a2a2a;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #333;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.upcoming-poster:hover {
    transform: scale(1.02);
}

.poster-placeholder {
    color: #555;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 3000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(5px);
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    animation: zoomIn 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.close-lightbox {
    position: absolute;
    top: 25px;
    right: 40px;
    color: #f1f1f1;
    font-size: 50px;
    font-weight: 100;
    transition: 0.3s;
    cursor: pointer;
    line-height: 1;
}

.close-lightbox:hover,
.close-lightbox:focus {
    color: var(--accent-color);
    text-decoration: none;
    cursor: pointer;
    transform: rotate(90deg);
}

@keyframes zoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Scroll Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Reveal Classes */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}


/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 3rem;
    }

    .navbar {
        padding: 1rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .vision-mission-grid,
    .chapter-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 3rem;
    }

    .chapter-image {
        order: -1;
    }

    .section {
        padding: 5rem 5%;
    }
}