:root {
    --bg-color: #0b0c10;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-gold: #c5a059;
    --accent-blue: #1f2833;

    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-display: 'Cinzel', serif;
    --font-eng: 'Outfit', sans-serif;

    --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
    --transition-slow: 0.8s var(--ease-out);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Language Visibility Logic */
[data-lang] {
    display: none;
}

body.lang-jp [data-lang="jp"] {
    display: inline-block;
}

body.lang-en [data-lang="en"] {
    display: inline-block;
}

body.lang-cn [data-lang="cn"] {
    display: inline-block;
}

/* In block contexts where inline-block messes up layout, override via specialized classes or just use span */
p[data-lang],
div[data-lang],
h1[data-lang],
h2[data-lang] {
    display: none;
}

body.lang-jp p[data-lang="jp"],
body.lang-jp div[data-lang="jp"],
body.lang-jp h1[data-lang="jp"] {
    display: block;
}

body.lang-en p[data-lang="en"],
body.lang-en div[data-lang="en"],
body.lang-en h1[data-lang="en"] {
    display: block;
}

body.lang-cn p[data-lang="cn"],
body.lang-cn div[data-lang="cn"],
body.lang-cn h1[data-lang="cn"] {
    display: block;
}


/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-serif);
    font-weight: 400;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 5rem);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-gold);
}

.section-desc {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Navigation */
.fixed-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    mix-blend-mode: difference;
    color: white;
}

.logo {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.1em;
}

.nav-links button {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    font-family: var(--font-eng);
    text-transform: uppercase;
    margin-left: 1.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links button.active,
.nav-links button:hover {
    color: white;
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 2.0s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
    transform: scale(1.05); /* Slight zoom effect */
    transition: opacity 2.0s ease-in-out, transform 10s linear;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    pointer-events: none; /* Ensure clicks pass through overlay */
    z-index: 1; /* Overlay on top of slides */
}

.hero-content {
    position: relative;
    z-index: 2; /* Content above overlay */
    opacity: 0;
    /* Animated in JS */
    transform: translateY(20px);
    transition: var(--transition-slow);
}

.hero-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-meta {
    font-family: var(--font-eng);
    letter-spacing: 0.2em;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
}

.divider {
    margin: 0 0.5rem;
    opacity: 0.5;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-eng);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translate(-50%, 0);
    }

    50% {
        transform: translate(-50%, 10px);
    }
}

/* Base Section */
.section {
    padding: 8rem 2rem;
}

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

/* View Grid */
.view-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.view-item {
    position: relative;
}

.view-img-placeholder {
    width: 100%;
    height: 400px;
    background-color: #222;
    margin-bottom: 1.5rem;
    background-size: cover;
    background-position: center;
}

#img-gate-bridge {
    background-image: url('file:///c:/Users/sheng/.gemini/antigravity/scratch/lux_estate_listings/Image/眺望1.jpg');
}

#img-rainbow-fuji {
    background-image: url('file:///c:/Users/sheng/.gemini/antigravity/scratch/lux_estate_listings/Image/眺望3.jpg');
}

.view-item h3 {
    font-family: var(--font-display);
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

/* Simulator */
.simulator-display {
    width: 100%;
    height: 60vh;
    background-size: cover;
    background-position: center;
    position: relative;
    transition: background-image 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Default to Morning as we have it */
    background-image: url('file:///c:/Users/sheng/.gemini/antigravity/scratch/lux_estate_listings/Image/眺望1.jpg');
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.slider-controls button {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    font-family: var(--font-eng);
    transition: all 0.3s;
}

.slider-controls button:hover,
.slider-controls button.active {
    background: var(--accent-gold);
    color: #000;
    border-color: var(--accent-gold);
}

.sim-text {
    background: rgba(0, 0, 0, 0.6);
    padding: 2rem;
    backdrop-filter: blur(5px);
    max-width: 600px;
    text-align: center;
}

/* Architecture */
.eco-void-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 4rem;
}

#img-ecovoid {
    height: 500px;
    background-color: #333;
    background-image: url('file:///c:/Users/sheng/.gemini/antigravity/scratch/lux_estate_listings/Image/建物全体.jpg');
    background-size: cover;
    background-position: center;
}

.arch-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.arch-card {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
}

.arch-card h3 {
    font-family: var(--font-eng);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--accent-gold);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

/* Privilege */
.privilege-section {
    background: #111;
}

.spec-highlight {
    display: flex;
    justify-content: space-around;
    padding: 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.spec-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.spec-item span {
    font-family: var(--font-eng);
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.spec-item strong {
    font-family: var(--font-display);
    font-size: 2rem;
    color: white;
}

/* Resilience / Amenities grid */
.tech-grid,
.amenities-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.tech-card,
.amenity-item,
.adv-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 2rem;
    transition: background 0.3s;
}

.tech-card:hover,
.amenity-item:hover,
.adv-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.tech-card h3,
.amenity-item h4,
.adv-item h3 {
    font-family: var(--font-serif);
    color: var(--accent-gold);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* Specs Table */
.specs-table {
    border-top: 1px solid #333;
}

.spec-row {
    display: flex;
    border-bottom: 1px solid #333;
    padding: 1.5rem 0;
}

.spec-row .label {
    width: 30%;
    color: var(--text-secondary);
    font-family: var(--font-serif);
}

.spec-row .value {
    width: 70%;
    color: var(--text-primary);
}

/* Footer */
footer {
    text-align: center;
    padding: 4rem 2rem;
    font-family: var(--font-eng);
    font-size: 0.8rem;
    color: #555;
    border-top: 1px solid #222;
}

/* Responsive */
@media (max-width: 768px) {

    .view-grid,
    .eco-void-feature,
    .spec-highlight {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 2rem;
    }

}

/* Gallery Section */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
}

.gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
    display: block;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item h4 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    font-family: var(--font-eng);
    letter-spacing: 0.1em;
}

/* Amenity Images */
.amenity-img {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    margin-bottom: 1rem;
    background-color: #222;
}