:root {
    --color-brand-primary: #E8C547;
    --color-brand-hover: #f3d460;
    --color-bg-base: #060606;
    --color-bg-card: #141414;
    --color-bg-glass: rgba(20, 20, 20, 0.7);
    --color-border-glass: rgba(255, 255, 255, 0.1);
    
    --color-text-primary: #F5F5F5;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #666666;

    --font-brand: 'Playfair Display', serif;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Film Grain Overlay */
.grain-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.glass-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 72px;
    background: rgba(6, 6, 6, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-glass);
    z-index: 100;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-brand);
    font-size: 24px;
    font-weight: 600;
    font-style: italic;
    letter-spacing: 0.5px;
}
.logo-lut { color: var(--color-brand-primary); }
.logo-ive { color: var(--color-text-primary); }

.desktop-nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.desktop-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.desktop-nav a:hover {
    color: var(--color-text-primary);
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--color-brand-primary);
    color: #000;
}

.btn-primary.disabled {
    background: #333;
    color: #888;
    cursor: not-allowed;
}

.btn-outline {
    border: 1px solid var(--color-brand-primary);
    color: var(--color-brand-primary);
}

.btn-outline:hover {
    background: var(--color-brand-primary);
    color: #000;
}

/* Hero */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
}

.hero-bg-image {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-gradient {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to right, rgba(6,6,6,0.95) 0%, rgba(6,6,6,0.6) 50%, rgba(6,6,6,0.2) 100%), linear-gradient(to bottom, rgba(6,6,6,0) 60%, var(--color-bg-base) 100%);
    z-index: -1;
}

.hero-content {
    width: 100%;
}

.hero-text {
    max-width: 640px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(48px, 6vw, 72px);
    line-height: 1.15;
    font-weight: 700;
    margin-bottom: 24px;
}

.hero .subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.cta-group {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cta-group .note {
    font-size: 14px;
    color: var(--color-text-tertiary);
}

/* Sections */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 40px;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.section-header p {
    color: var(--color-brand-primary);
    font-size: 18px;
    font-weight: 500;
}

/* Compare Section */
.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    border-radius: 24px;
    overflow: hidden;
    background: #222;
}

.compare-item {
    position: relative;
    aspect-ratio: 4/5;
}

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

.compare-item .label {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255,255,255,0.1);
}

.compare-item .label.highlight {
    background: var(--color-brand-primary);
    color: #000;
    border: none;
}

.compare-desc {
    text-align: center;
    max-width: 800px;
    margin: 40px auto 0;
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

/* Photo Gallery */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.photo-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.photo-card .img-base,
.photo-card .img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.photo-card:hover .img-base,
.photo-card:active .img-base {
    transform: scale(1.03);
}

.photo-card:hover .img-overlay,
.photo-card:active .img-overlay {
    opacity: 0;
    transform: scale(1.03);
}

.photo-tag {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    z-index: 10;
}

.photo-tag .hint {
    font-size: 12px;
    color: var(--color-brand-primary);
    opacity: 0.8;
}

/* RAW Note */
.raw-note {
    margin-top: 64px;
    padding: 24px 32px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.raw-note-icon {
    color: var(--color-brand-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.raw-note-content strong {
    display: block;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    font-size: 15px;
}

.raw-note-content p {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin: 0;
}

/* Params Section */
.params-content {
    display: flex;
    align-items: center;
    gap: 80px;
}

.params-text {
    flex: 1;
}

.params-text h2 {
    font-family: var(--font-heading);
    font-size: 40px;
    margin-bottom: 24px;
}

.params-text p {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.params-image {
    flex: 1;
}

/* UI Showcase Section */
.ui-section {
    background: linear-gradient(to bottom, #060606 0%, #0d0d0d 100%);
}

.ui-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    margin-top: 40px;
}

.ui-mockup {
    position: relative;
    width: 300px;
    border-radius: 36px;
    padding: 8px;
    background: #222;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transition: transform 0.4s ease;
}

.ui-mockup.highlight {
    transform: scale(1.08);
    z-index: 10;
    box-shadow: 0 30px 60px rgba(0,0,0,0.8), 0 0 0 1px var(--color-brand-primary);
}

.ui-mockup img {
    width: 100%;
    border-radius: 28px;
    display: block;
}

.ui-caption {
    text-align: center;
    margin-top: 24px;
    font-size: 15px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.ui-mockup.highlight .ui-caption {
    color: var(--color-brand-primary);
}

.rounded-img {
    width: 100%;
    border-radius: 24px;
    display: block;
}

.shadow-lg {
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}

/* LUT Section */
.glass-card {
    background: var(--color-bg-glass);
    backdrop-filter: blur(24px);
    border: 1px solid var(--color-border-glass);
    border-radius: 32px;
}

.lut-content {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 64px;
}

.lut-text {
    flex: 1;
}

.lut-text h2 {
    font-family: var(--font-heading);
    font-size: 36px;
    margin-bottom: 20px;
}

.lut-text p {
    color: var(--color-text-secondary);
    font-size: 16px;
    line-height: 1.8;
}

.lut-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.lut-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

/* Collab Section */
.collab-section {
    background: linear-gradient(to bottom, var(--color-bg-base) 0%, #111 100%);
}

.collab-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 60px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--color-border-glass);
    border-radius: 24px;
}

.collab-card p {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

/* Footer */
footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--color-border-glass);
    background: #000;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-brand .logo {
    margin-bottom: 16px;
    display: block;
}

.footer-brand .copyright {
    color: var(--color-text-tertiary);
    font-size: 14px;
    max-width: 300px;
}

.footer-legal a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    margin-right: 24px;
    transition: color 0.2s;
}

.footer-legal a:hover {
    color: var(--color-brand-primary);
}

.footer-legal .note {
    margin-top: 16px;
    font-size: 12px;
    color: var(--color-text-tertiary);
    max-width: 400px;
}

/* Animations */
.fade-up {
    animation: fadeUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(30px);
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }

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

/* Responsive */
@media (max-width: 968px) {
    .compare-grid {
        grid-template-columns: 1fr;
    }
    .photo-grid {
        grid-template-columns: 1fr;
    }
    .params-content {
        flex-direction: column;
        text-align: center;
    }
    .lut-content {
        flex-direction: column;
        padding: 40px 24px;
        text-align: center;
    }
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
}