/* MODERN RESET & VARIABLES */
:root {
    --primary-color: #2c3e50; /* Slate Blue */
    --secondary-color: #ecf0f1; /* Light Silver */
    --accent-color: #e67e22; /* Safety Orange */
    --text-dark: #333;
    --text-light: #fff;
    --font-main: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --max-width: 1200px;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #f9f9f9;
}

/* NAVIGATION */
header {
    background: var(--primary-color);
    color: var(--text-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: auto;
    padding: 0 20px;
}

.logo { font-size: 1.5rem; font-weight: bold; text-transform: uppercase; letter-spacing: 1px; }
.logo span { color: var(--accent-color); }

.nav-links { list-style: none; display: flex; gap: 20px; }
.nav-links a { color: var(--text-light); text-decoration: none; font-weight: 500; transition: color 0.3s; }
.nav-links a:hover { color: var(--accent-color); }
.nav-links .highlight { background: var(--accent-color); padding: 5px 15px; border-radius: 4px; }

/* HERO SECTION */
.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('https://source.unsplash.com/1600x900/?roof,metal'); /* Placeholder Image */
    background-size: cover;
    background-position: center;
    color: var(--text-light);
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.hero h1 { font-size: 3rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; max-width: 600px; }

.btn {
    display: inline-block;
    background: var(--accent-color);
    color: var(--text-light);
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn:hover { transform: translateY(-3px); background: #d35400; }

/* SECTIONS */
.container { max-width: var(--max-width); margin: 4rem auto; padding: 0 20px; }
.section-title { text-align: center; margin-bottom: 3rem; color: var(--primary-color); }

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    border-bottom: 4px solid var(--accent-color);
}

/* FORMS */
.contact-form { max-width: 600px; margin: auto; background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: bold; }
.form-group input, .form-group textarea { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; }

/* FOOTER */
footer { background: var(--primary-color); color: var(--text-light); text-align: center; padding: 2rem 0; margin-top: auto; }
.footer-links a { color: #ccc; margin: 0 10px; text-decoration: none; font-size: 0.9rem; }
.domain-tag { margin-top: 1rem; font-size: 0.8rem; opacity: 0.7; }

/* RESPONSIVE */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Simplified for this demo */
    .hero h1 { font-size: 2rem; }
}