:root {
    --primary-color: #e31e24; /* Construction Red */
    --dark-bg: #1a1a1a;
    --darker-bg: #111111;
    --text-color: #f0f0f0;
    --text-muted: #a0a0a0;
    --white: #ffffff;
    --max-width: 1200px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    padding: 1rem 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
}

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

.btn-contact {
    background-color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 2px;
    color: var(--white) !important;
}

.btn-contact:hover {
    background-color: #c0151a;
    transform: translateY(-2px);
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    filter: grayscale(30%);
    transform: scale(1.05); /* Slight zoom for parallax feel if JS added later */
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero h1 span {
    color: var(--primary-color);
}

.hero p {
    font-size: 1.25rem;
    color: #cccccc;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--white);
}

/* Sections General */
.section {
    padding: 5rem 0;
}

.section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.line {
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin-bottom: 2rem;
}

.line.center {
    margin-left: auto;
    margin-right: auto;
}

/* About Section */
.about {
    background-color: var(--darker-bg);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.about-image {
    text-align: center;
}

.about-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5));
}

/* Services */
.services h2, .references h2 {
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background-color: var(--darker-bg);
    padding: 2.5rem;
    border-bottom: 4px solid transparent;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    border-bottom-color: var(--primary-color);
}

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

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* References */
.references p.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1; /* Square images */
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item .caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    color: var(--white);
    font-family: 'Oswald', sans-serif;
    transform: translateY(100%);
    transition: var(--transition);
}

.gallery-item:hover .caption {
    transform: translateY(0);
}

/* Contact */
.contact {
    background-color: var(--darker-bg);
}

.contact-list li {
    margin-bottom: 1rem;
    color: var(--text-muted);
    display: flex;
}

.contact-list li span {
    font-weight: 700;
    color: var(--white);
    width: 80px;
    display: inline-block;
}

.map-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
    opacity: 0.8;
}

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple Hide for mobile in this mvp version, normally add hamburger */
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-image {
        order: -1; /* Image first on mobile */
    }
}