:root {
    --bg-black: #050505;
    --bg-dark-gray: #121212;
    --text-white: #ffffff;
    --border-color: #333333;
    --accent: #e0e0e0;
    font-weight: bold;
}

body {
    background-color: var(--bg-black);
    color: var(--text-white);
    font-family: 'Helvetica Neue', sans-serif;
    margin: 0;
    line-height: 1.6;
}

/* Navbar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center; 
    padding: 1.5rem 2rem;
    background: rgba(5,5,5,0.9);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.4rem;
}

nav ul { 
    display: flex; 
    list-style: none; 
    gap: 2rem; 
    margin: 0; 
    padding: 0;
}

nav a { 
    color: var(--text-white); 
    text-decoration: none; 
    text-transform: uppercase; 
    font-size: 1.0rem; 
    letter-spacing: 1px; 
    transition: 0.3s; 
}

nav a:hover { color: #888; }

.hamburger { 
    display: none; 
    cursor: pointer; 
    font-size: 1.5rem; 
    color: var(--text-white);
    transition: transform 0.3s ease;
}

/* Hero */
.hero {
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    animation: fadeIn 1.5s ease-in-out;
}

.hero h1 { font-size: 3.5rem; font-weight: 300; margin-bottom: 0.5rem; }

.btn {
    padding: 10px 25px;
    border: 1px solid var(--text-white);
    color: var(--text-white);
    text-decoration: none;
    transition: 0.3s;
    background: transparent;
    cursor: pointer;
}

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

/* Gallery Layout - Performance Optimized */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    padding: 2rem;
}

.gallery-item {
    background: #111;
    overflow: hidden;
    border-radius: 4px;
}

.gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    filter: grayscale(20%);
    transition: 0.4s;
    display: block;
}

.gallery-item img:hover { filter: grayscale(0%); transform: scale(1.02); }

/* Forms */
input, textarea, select {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    background: var(--bg-dark-gray);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    box-sizing: border-box;
}

/* --- Mobile Navigation Update with Animation --- */
@media(max-width: 768px) {
    nav {
        padding: 1rem 1.5rem;
    }

    nav ul { 
        /* Flex setup but hidden by default */
        display: flex; 
        flex-direction: column; 
        position: absolute; 
        top: 100%; 
        left: 0;
        right: 0;
        background: var(--bg-dark-gray); 
        width: 100%; 
        border-bottom: 1px solid var(--border-color);
        align-items: center;
        gap: 0; /* Managed by padding for better click targets */
        
        /* Animation properties */
        max-height: 0;
        opacity: 0;
        visibility: hidden;
        overflow: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        transform: translateY(-10px);
    }

    nav ul.active { 
        max-height: 400px; /* High enough to contain all links */
        opacity: 1;
        visibility: visible;
        padding: 1.5rem 0;
        transform: translateY(0);
    }

    nav ul li {
        width: 100%;
        text-align: center;
    }

    nav a {
        font-size: 1.2rem;
        padding: 15px 20px;
        display: block;
        width: 100%;
        box-sizing: border-box; /* Prevents text cutoff */
    }

    .hamburger { 
        display: block; 
    }

    /* Rotates hamburger when menu is open */
    nav ul.active ~ .hamburger {
        transform: rotate(90deg);
    }

    .hero h1 { font-size: 2rem; }
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }