:root {
    --primary-color: #c41e3a;
    --dark-color: #2c3e50;
    --light-gray: #f4f4f4;
    --text-color: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}
.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--dark-color);
}
.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
}
.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    transition: color 0.3s;
}
.nav-menu a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('https://images.unsplash.com/photo-1508098682722-e99c2aa2b6de?auto=format&fit=crop&w=1600&q=80') no-repeat center center/cover;
    background-attachment: fixed;
    height: 100vh;
    display: flex;
    align-items: center;
    color: #fff;
    text-align: center;
    padding-top: 80px;
}
.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}
.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}
.btn-primary {
    background: var(--primary-color);
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background 0.3s;
}
.btn-primary:hover {
    background: #a01830;
}

/* Sections */
section {
    padding: 80px 0;
}
.services h2, .references h2, .contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.service-card {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.service-card:hover {
    transform: translateY(-5px);
}
.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}
.references ul {
    max-width: 800px;
    margin: 0 auto;
    list-style-type: none;
    columns: 2;
    column-gap: 2rem;
    font-size: 1.1rem;
}
.references li {
    margin-bottom: 1rem;
}

/* Contact */
.contact-info {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: grid;
    gap: 1rem;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}
.contact-form button {
    width: 100%;
    padding: 15px;
    border: none;
    background: var(--primary-color);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    border-radius: 5px;
}
.contact-form button:hover {
    background: #a01830;
}

/* Footer */
footer {
    background: var(--dark-color);
    color: #ccc;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive */
@media(max-width: 768px){
    nav {
        flex-direction: column;
    }
    .nav-menu {
        margin-top: 1rem;
        gap: 1rem;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .references ul {
        columns: 1;
    }
}