/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3 {
    margin-bottom: 1rem;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
}

p {
    margin-bottom: 1rem;
}

/* Navigation */
nav {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
}
.logo span { color: #2a6fa3; }

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li a {
    text-decoration: none;
    color: #333;
    padding: 0.5rem 1rem;
    display: block;
}
.nav-menu li a:hover { color: #2a6fa3; }

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
}
.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    background: #2a6fa3;
    color: white;
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    border: none;
    cursor: pointer;
}
.btn:hover { background: #1c5a8a; }

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

.bg-light { background-color: #f4f4f4; }

/* Hero Section */
header {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://placehold.co/1200x600/2a6fa3/white?text=Construction+Site') no-repeat center center/cover;
    height: 80vh;
    color: #fff;
    display: flex;
    align-items: center;
    text-align: center;
    margin-top: 60px; /* Offset fixed nav */
}

.hero-content { max-width: 800px; }

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

.service-card {
    background: #fff;
    padding: 2rem;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.service-card h3 { color: #2a6fa3; }
.service-card ul { margin-left: 1.5rem; }
.service-card li { margin-bottom: 0.5rem; }

/* Process Steps */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}
.step { padding: 1.5rem; }

/* CTA Section */
.cta {
    text-align: center;
    background: #2a6fa3;
    color: white;
}

/* Contact Form */
.form-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; }
input, textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    background: #333;
    color: #fff;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-menu {
        position: fixed;
        top: 60px;
        right: -100%;
        background: #fff;
        width: 80%;
        height: 100vh;
        flex-direction: column;
        transition: 0.3s;
        box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    }
    .nav-menu.active { right: 0; }
    .nav-menu li { margin: 1rem 0; text-align: center; }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
}