:root {
    --primary-color: #0056b3;
    --secondary-color: #28a745;
    --dark-color: #1a1a1a;
    --light-color: #f4f4f4;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }

.container { width: 85%; max-width: 1200px; margin: auto; }

/* Navbar */
.navbar { background: #fff; padding: 1rem 0; box-shadow: 0 2px 10px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: bold; text-decoration: none; color: var(--dark-color); }
.logo span { color: var(--primary-color); }
.nav-links { display: flex; list-style: none; align-items: center; }
.nav-links li a { text-decoration: none; color: #333; margin: 0 15px; transition: 0.3s; }
.nav-links li a:hover { color: var(--primary-color); }
.btn-teklif { background: var(--primary-color); color: #fff !important; padding: 10px 20px; border-radius: 5px; }

/* Hero Section */
.hero { background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('hero-bg.jpg'); background-size: cover; height: 80vh; display: flex; align-items: center; text-align: center; color: #fff; }
.hero h1 { font-size: 3rem; margin-bottom: 20px; }
.hero-btns .btn { padding: 15px 30px; text-decoration: none; border-radius: 5px; margin: 10px; display: inline-block; }
.btn.primary { background: var(--primary-color); color: #fff; }
.btn.secondary { background: var(--secondary-color); color: #fff; }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 40px; }
.card { padding: 30px; background: #fff; border-bottom: 4px solid var(--primary-color); box-shadow: 0 5px 15px rgba(0,0,0,0.05); text-align: center; }
.card i { font-size: 3rem; color: var(--primary-color); margin-bottom: 15px; }

.section-title { text-align: center; margin: 50px 0 20px; font-size: 2.5rem; }
.cta-banner { background: var(--dark-color); color: #fff; padding: 60px 0; text-align: center; }