/* Google Fonts */
/* font-family: 'Montserrat', sans-serif; (Headings) */
/* font-family: 'Open Sans', sans-serif; (Body) */

:root {
    --primary-color: #0d2b4f; /* Dark Blue */
    --accent-color: #f76b1c; /* Construction Orange */
    --bg-light: #f4f5f7; /* Light Grey */
    --bg-dark: #1f2937;
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --border-color: #e5e7eb;
    
    --heading-font: 'Montserrat', sans-serif;
    --body-font: 'Open Sans', sans-serif;
    
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--body-font);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

.text-center { text-align: center; }
.text-white { color: var(--white) !important; }
.text-accent { color: var(--accent-color) !important; }
.bg-light { background-color: var(--bg-light); }
.bg-dark { background-color: var(--bg-dark); }
.bg-accent { background-color: var(--accent-color); }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--heading-font);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #d15610;
    color: var(--white);
}

.btn-outline-light {
    background-color: transparent;
    border-color: var(--white);
    color: var(--white);
}

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

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

.btn-dark:hover {
    background-color: #081d36;
    color: var(--white);
}

.btn-nav {
    padding: 8px 20px;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* Titles */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.title-underline {
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 0 auto 40px;
}

.left-aligned {
    margin-left: 0;
}

.underline-accent {
    background-color: var(--white);
}


/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    padding: 10px 0;
}

.header:not(.scrolled) {
    padding: 20px 0;
}

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

.logo {
    font-family: var(--heading-font);
    font-size: 1.5rem;
    font-weight: 800;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-link:hover {
    color: var(--accent-color);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 220px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    padding: 10px 0;
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}

.dropdown li:last-child a {
    border-bottom: none;
}

.dropdown li a:hover {
    background-color: var(--bg-light);
    color: var(--accent-color);
    padding-left: 25px; /* Slight indent effect */
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* --- Hero --- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background-image: url('https://images.unsplash.com/photo-1541888086425-d81bb19240f5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    padding-top: 80px; /* Offset for header */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(13, 43, 79, 0.8), rgba(13, 43, 79, 0.6));
}

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

.hero-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

/* Animation */
.fade-in-up {
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Services --- */
.grid {
    display: grid;
    gap: 30px;
}

.cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.service-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

.icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.service-card:hover .icon-wrapper {
    background-color: var(--accent-color);
}

.icon-wrapper i {
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .icon-wrapper i {
    color: var(--white);
}

.card-title {
    font-size: 1.25rem;
}

.card-desc {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* --- Projects --- */
.projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    background-color: var(--primary-color);
}

.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover img {
    transform: scale(1.05);
    opacity: 0.3;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-info {
    text-align: center;
    color: var(--white);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.project-card:hover .project-info {
    transform: translateY(0);
}

.project-info h4 {
    color: var(--white);
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 600;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90vh;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    color: var(--white);
    font-size: 3rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.lightbox-close:hover {
    color: var(--accent-color);
}

/* --- Features (Why Choose Us) --- */
.features-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.feature-item h4 {
    color: var(--white);
    font-size: 1.1rem;
}

.feature-item p {
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* --- About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-list {
    margin-top: 20px;
}

.about-list li {
    margin-bottom: 10px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-image img {
    border-radius: 8px;
    box-shadow: -15px 15px 0 var(--accent-color);
}

/* --- Testimonials --- */
.testimonials-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.review-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    position: relative;
    border-top: 4px solid var(--accent-color);
}

.quote-icon {
    position: absolute;
    top: -20px;
    left: 30px;
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.review-text {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 20px;
}

.reviewer h4 {
    margin-bottom: 2px;
    font-size: 1.1rem;
}

.reviewer span {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
}

/* --- CTA --- */
.cta-title {
    color: var(--white);
    font-size: 2.5rem;
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* --- Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-top: 30px;
}

.contact-method i {
    width: 50px;
    height: 50px;
    background-color: var(--bg-light);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.contact-method h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-form {
    background-color: var(--white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--body-font);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* --- Footer --- */
.footer {
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: #9ca3af;
}

.footer-links ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.05);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icons a:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #9ca3af;
    font-size: 0.9rem;
}

/* --- Responsive --- */
@media (max-width: 991px) {
    .hero-title { font-size: 2.8rem; }
    .about-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    .about-image { margin-top: 30px; }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        padding: 20px;
        display: none; /* hidden by default */
    }
    
    .nav.active { display: block; }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .nav-item { width: 100%; }
    
    .dropdown {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        padding-left: 20px;
        border-left: 2px solid var(--accent-color);
        margin-top: 10px;
    }
    
    .has-dropdown.active .dropdown { display: block; }
    
    .hero-title { font-size: 2.2rem; }
    .hero-buttons { flex-direction: column; }
    .cta-buttons { flex-direction: column; }
    
    .section-padding { padding: 50px 0; }
}