:root {
    --black: #000000;
    --dark-grey: #1a1a1a;
    --grey: #888888;
    --white: #ffffff;
    --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

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

body {
    background-color: var(--black);
    color: var(--white);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography mimic for Helvetica Neue Extended / Black */
h1, h2, .logo {
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -2px;
    line-height: 0.9;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 2rem;
    background: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 2rem;
    right: 2rem;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.15), transparent);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-mark {
    color: var(--grey);
    font-size: 0.5rem;
    opacity: 0.5;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0;
}

.nav-links li {
    position: relative;
}

.nav-links li + li::before {
    content: '/';
    color: rgba(255,255,255,0.15);
    padding: 0 1rem;
    font-weight: 100;
}

.nav-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 2px;
    padding: 0.25rem 0;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--white);
    transition: width 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

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

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

.nav-links a.active-nav {
    color: var(--white);
    font-weight: 700;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 1rem;
}

.hero-title {
    font-size: clamp(5rem, 15vw, 12rem);
    transform: scaleX(1.2); /* Mimicking Extended width */
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1rem;
    letter-spacing: 5px;
    color: var(--grey);
    margin-bottom: 3rem;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    animation: scrollFade 2.5s ease-in-out infinite;
}

.scroll-text {
    font-size: 0.85rem;
    letter-spacing: 4px;
    font-weight: 700;
    color: var(--white);
}

.scroll-arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.arrow {
    display: block;
    width: 16px;
    height: 16px;
    border-left: 1.5px solid var(--white);
    border-bottom: 1.5px solid var(--white);
    transform: rotate(135deg);
}

@keyframes scrollFade {
    0% {
        opacity: 0;
        transform: translateY(12px);
    }
    20% {
        opacity: 1;
        transform: translateY(0);
    }
    60% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-12px);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
    40% {transform: translateY(-10px);}
    60% {transform: translateY(-5px);}
}

/* Gallery Section */
.gallery-section {
    padding: 5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.filter-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.filter-line {
    flex: 1;
    height: 1px;
    background: var(--grey);
    opacity: 0.3;
}

.filter-options {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.filter-btn {
    background: transparent;
    border: none;
    color: var(--grey);
    padding: 0.5rem 0;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.7rem;
    letter-spacing: 2px;
    transition: var(--transition);
    position: relative;
}

.filter-btn:hover {
    color: var(--white);
}

.filter-btn.active {
    color: var(--white);
    font-weight: 700;
}

.filter-dot {
    color: var(--grey);
    font-size: 0.4rem;
    opacity: 0.3;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/5;
    background: var(--dark-grey);
    transition: var(--transition);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: var(--transition);
}

.gallery-item:hover img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.6) 35%, rgba(0,0,0,0.2) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    text-align: left;
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
    transform: translateY(10px);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
    transform: translateY(0);
}

.gallery-overlay h3 {
    font-size: 1.1rem;
    font-weight: 900;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.gallery-overlay p {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--grey);
    max-width: 90%;
}


/* About Section */
.about-section {
    padding: 12rem 2rem;
    background: var(--dark-grey);
    display: flex;
    justify-content: center;
}

.about-container {
    max-width: 900px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-label {
    font-size: 0.75rem;
    letter-spacing: 5px;
    color: var(--grey);
    margin-bottom: 3rem;
    font-weight: 500;
}

.about-headline {
    font-size: clamp(3.5rem, 8vw, 5.5rem);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 0.92;
    text-transform: uppercase;
    margin-bottom: 2.5rem;
}

.about-divider {
    width: 50px;
    height: 2px;
    background: var(--grey);
    margin-bottom: 2.5rem;
}

.about-text {
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    color: var(--grey);
    line-height: 1.9;
    max-width: 700px;
}

.about-meta {
    font-size: 0.7rem;
    letter-spacing: 5px;
    color: var(--grey);
    margin-top: 3.5rem;
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    padding: 10rem 2rem;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-section h2 {
    font-size: 3rem;
    margin-bottom: 3rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input, .contact-form textarea {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--grey);
    color: var(--white);
    padding: 1rem 0;
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.contact-form input:focus, .contact-form textarea:focus {
    border-bottom-color: var(--white);
}

.contact-form button {
    background: var(--white);
    color: var(--black);
    border: none;
    padding: 1rem 2rem;
    font-weight: 900;
    cursor: pointer;
    margin-top: 2rem;
    transition: var(--transition);
}

.contact-form button:hover {
    background: var(--grey);
}

footer {
    padding: 3rem 2rem;
    text-align: center;
    font-size: 0.7rem;
    color: var(--grey);
    letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .hero-title {
        font-size: 5rem;
    }
}