:root {
    --primary-blue: #021a32;
    --secondary-blue: #00509e;
    --accent-blue: #3a86ff;
    --text-dark: #333;
    --text-light: #fff;
    --bg-light: #f4f7f9;
}

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

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

/* Header */
header {
    background-color: var(--primary-blue);
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.logo img {
    height: 50px;
    /*background: rgba(255,255,255,0.1);*/
    padding: 5px;
    border-radius: 5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--accent-blue);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(2, 26, 50, 0.85), rgba(2, 26, 50, 0.85)), url('assets/image1.jpg') no-repeat center center/cover;
    color: var(--text-light);
    text-align: center;
    padding: 120px 5%;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    background-color: var(--accent-blue);
    color: var(--text-light);
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background 0.3s, transform 0.2s;
    display: inline-block;
}

.btn:hover {
    background-color: var(--secondary-blue);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 80px 5%;
}

h2 {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.2rem;
    margin-bottom: 40px;
}

/* About */
.about {
    background-color: #fff;
    text-align: center;
}

.about p {
    max-width: 800px;
    margin: 0 auto 40px auto;
    font-size: 1.1rem;
}

.modalities img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    max-width: 500px;
}

/* Services */
.services {
    background-color: var(--bg-light);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.service-card h3 {
    color: var(--secondary-blue);
    margin-bottom: 15px;
}

/* Footer */
footer {
    background-color: var(--primary-blue);
    color: var(--text-light);
    text-align: center;
    padding: 60px 5% 30px;
}

footer h2 {
    color: var(--text-light);
    margin-bottom: 20px;
}

.contact-info {
    margin: 30px 0;
    font-size: 1.2rem;
}

.contact-info a {
    color: var(--accent-blue);
    text-decoration: none;
}

.copyright {
    margin-top: 40px;
    font-size: 0.9rem;
    opacity: 0.7;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
    }
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero h1 {
        font-size: 2rem;
    }
}