/* Genel Ayarlar */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f8f9fa, #e3f2fd);
    color: #333;
}

/* Başlık */
header {
    background: linear-gradient(135deg, #4CAF50, #43A047);
    color: white;
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    font-weight: bold;
}

/* Ana İçerik */
main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Grid Düzeni */
.customer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* Varsayılan 3 kolon */
    gap: 2rem;
    align-items: stretch;
}

/* Müşteri Kartları */
.customer {
    background: white;
    border: 2px solid #4CAF50;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
}

.customer:hover {
    transform: scale(1.03);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.customer h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: #4CAF50;
    text-transform: uppercase;
}

/* Sosyal Medya Bağlantıları */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    text-decoration: none;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-weight: bold;
    transition: color 0.2s, transform 0.2s;
}

.social-links a img {
    width: 48px;
    height: 48px;
    margin-bottom: 0.5rem;
    transition: transform 0.2s;
}

.social-links a:hover img {
    transform: scale(1.2);
}

.social-links a:hover {
    color: #4CAF50;
    transform: translateY(-5px);
}

/* Altbilgi */
footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: white;
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* Responsive Tasarım */
@media (max-width: 768px) {
    .customer-grid {
        grid-template-columns: 1fr; /* Küçük ekranlarda tek kolon */
    }

    header h1 {
        font-size: 2rem; /* Başlığı biraz küçült */
    }

    .customer {
        padding: 1rem; /* Kartların içeriğini küçült */
    }

    .social-links a img {
        width: 36px; /* Logoları küçült */
        height: 36px;
    }
}