:root {
--navy: #001F3F;
--silver: #C0C0C0;
--white: #FFFFFF;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Roboto', sans-serif; color: var(--navy); background: var(--white); }
h1, h2, h3 { font-family: 'Montserrat', sans-serif; }

.navbar { background: var(--navy); color: var(--white); position: fixed; width: 100%; top: 0; z-index: 1000; padding: 1rem 0; }
.nav-container { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 2rem; }
.logo { height: 60px; }
.nav-menu { display: flex; gap: 2rem; list-style: none; }
.nav-menu a { color: var(--white); text-decoration: none; font-weight: 500; }
.hamburger { display: none; cursor: pointer; }
.hamburger span { display: block; width: 25px; height: 3px; background: var(--white); margin: 5px 0; }

.hero { background: var(--navy); color: var(--white); text-align: center; padding: 160px 2rem 100px; }
.hero h1 { font-size: 3.5rem; margin-bottom: 1rem; }
.hero p { font-size: 1.4rem; margin-bottom: 3rem; }
.btn { background: var(--silver); color: var(--navy); padding: 1rem 2rem; margin: 0 1rem; text-decoration: none; border-radius: 5px; font-weight: bold; }

.section { padding: 80px 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; text-align: center; }
.zahy-logo { max-width: 250px; margin: 3rem auto; display: block; }

.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-top: 3rem; }
.service-card { background: #f8f8f8; padding: 2rem; border-radius: 10px; border: 1px solid var(--silver); }

#contact form { max-width: 600px; margin: 3rem auto; display: flex; flex-direction: column; gap: 1rem; }
#contact input, #contact textarea { padding: 1rem; border: 1px solid var(--silver); border-radius: 5px; }
#contact button { background: var(--navy); color: var(--white); padding: 1rem; border: none; border-radius: 5px; cursor: pointer; font-size: 1.1rem; }
.whatsapp-btn { display: inline-block; background: #25D366; color: white; padding: 1rem 2rem; border-radius: 50px; text-decoration: none; margin-top: 2rem; font-size: 1.1rem; }

footer { background: var(--navy); color: var(--white); padding: 3rem 0; text-align: center; }
.social-links a { color: var(--silver); text-decoration: none; }

@media (max-width: 768px) {
.hamburger { display: block; }
.nav-menu { position: absolute; top: 100%; left: 0; width: 100%; background: var(--navy); flex-direction: column; display: none; }
.nav-menu.active { display: flex; padding: 2rem; }
.hero h1 { font-size: 2.5rem; }
.btn { display: block; margin: 1rem auto; width: 80%; }
}