body {
    margin: 0;
    font-family: Arial, sans-serif;
}

header {
    background: #0b1c2d;
    color: white;
    padding: 15px 0;
}

.container {
    width: 90%;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav a {
    color: white;
    margin-left: 15px;
    text-decoration: none;
    font-weight: 500;
}

.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
    url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e');
    background-size: cover;
    color: white;
    text-align: center;
    padding: 120px 20px;
}

.btn {
    background: #007bff;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
}

.section {
    padding: 60px 20px;
    text-align: center;
}

.cards {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.card {
    background: #f4f4f4;
    padding: 25px;
    width: 280px;
    border-radius: 10px;
}

.dark {
    background: #0b1c2d;
    color: white;
}

.whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25D366;
    color: white;
    padding: 15px;
    border-radius: 50%;
    font-size: 22px;
    text-align: center;
}

footer {
    background: #0b1c2d;
    color: white;
    text-align: center;
    padding: 15px;
}

.site-title {
    color: white;
    font-size: 26px;   /* büyüttük */
    margin: 0 0 0 15px;
    font-weight: 600;
}

.left-area {
    display: flex;
    align-items: center;
}