:root {
    --bg-color: #0a0a0a;
    --text-color: #e0e0e0;
    --accent-color: #d4af37; /* Amber/Gold */
    --font-serif: 'Shippori Mincho', serif;
    --font-sans: 'Zen Kaku Gothic New', sans-serif;
}

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

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

/* Noise Overlay */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)" opacity="0.05"/%3E%3C/svg%3E');
    pointer-events: none;
    z-index: 999;
}

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

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

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

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
    animation: slowZoom 20s infinite alternate;
}

.vignette {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0) 0%, rgba(10,10,10,0.8) 100%);
}

.hero-content {
    z-index: 10;
    padding: 2rem;
}

.logo {
    font-size: 4rem;
    letter-spacing: 0.2rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.tagline {
    font-size: 1.5rem;
    font-family: var(--font-serif);
    margin-bottom: 0.5rem;
}

.sub-tagline {
    font-size: 1rem;
    opacity: 0.7;
    margin-bottom: 3rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.6;
}

.scroll-indicator .line {
    width: 1px;
    height: 60px;
    background-color: var(--text-color);
    margin-top: 10px;
}

/* Concept Section */
.concept {
    padding: 8rem 2rem;
    background-color: var(--bg-color);
    text-align: center;
}

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

.section-title {
    font-size: 2rem;
    margin-bottom: 4rem;
    letter-spacing: 0.1rem;
    color: var(--accent-color);
}

.concept-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    background-color: #0f0f0f;
}

.features .container {
    max-width: 1100px;
}

.dev-notice {
    font-size: 0.75rem;
    color: #888;
    text-align: center;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 6rem;
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 1s ease, transform 1s ease;
}

.feature-item:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-item:last-child {
    margin-bottom: 0;
}

.feature-content {
    flex: 1;
    padding: 2rem;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-image {
    flex-shrink: 0;
    position: relative;
}

.feature-image img {
    width: 280px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    position: relative;
}

.feature-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    max-width: 320px;
    border-radius: 8px;
    background: radial-gradient(circle, rgba(0,0,0,0) 50%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
    z-index: 1;
}

.feature-item:nth-child(even) .feature-image {
    display: flex;
    justify-content: flex-end;
}

.feature-item:nth-child(even) .feature-image::before {
    left: auto;
    right: 0;
}

.feature-number {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.3;
    margin-bottom: -1rem;
    margin-left: -1rem;
}

.features h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* CTA Section */
.cta {
    padding: 8rem 2rem;
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-color), #151515);
}

.btn-primary {
    display: inline-block;
    margin-top: 3rem;
    padding: 1rem 3rem;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    text-decoration: none;
    font-family: var(--font-serif);
    letter-spacing: 0.1rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Subscribe Form */
.subscribe-form {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.subscribe-form input[type="email"] {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-family: var(--font-sans);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-color);
    width: 280px;
    outline: none;
    transition: border-color 0.3s ease;
}

.subscribe-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.subscribe-form input[type="email"]:focus {
    border-color: var(--accent-color);
}

.subscribe-form button {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-family: var(--font-serif);
    background-color: transparent;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.subscribe-form button:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.footer {
    margin-top: 5rem;
    font-size: 0.8rem;
    opacity: 0.4;
}

/* Animation Keyframes */
@keyframes slowZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

/* Utility for JS animation */
.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .logo { font-size: 3rem; }
    .tagline { font-size: 1.2rem; }

    .feature-item,
    .feature-item:nth-child(even) {
        flex-direction: column;
        gap: 2rem;
        margin-bottom: 4rem;
    }

    .feature-content {
        padding: 1.5rem;
        order: 1;
    }

    .feature-image {
        order: 2;
        display: flex;
        justify-content: center;
    }

    .feature-item:nth-child(even) .feature-image {
        justify-content: center;
    }

    .feature-image img {
        width: 240px;
        max-width: 100%;
    }

    .feature-image::before {
        max-width: 280px;
        left: 50%;
        transform: translateX(-50%);
    }
}