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

body {
    font-family: 'Poppins', sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #000000, #1f1f1f); /* Sayfa arka planı */
    color: white;
}

/* Header styling */
header {
    width: 100%;
    position: absolute;
    top: 0;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #000000, #1f1f1f); /* Üst kısım arka planı */
}

.logo-section {
    display: flex;
    align-items: center;
}

.logo img {
    height: 80px;
    width: auto;
    display: block;
}

.company-name {
    font-size: 1.8rem;
    font-weight: 600;
    margin-left: 15px;
    color: #fff;
}

/* Navigation */
nav ul {
    display: flex;
    gap: 20px;
}

nav ul li {
    list-style: none;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.3s;
}

nav ul li:hover {
    opacity: 1;
}

/* Main content */
.container {
    text-align: center;
}

h1 {
    font-size: 3rem;
    letter-spacing: 2px;
    margin-top: 20px;
}

p {
    font-size: 1.2rem;
    margin-top: 10px;
    opacity: 0.8;
}

.icon {
    width: 360px;
    height: 360px;
    margin: 0 auto;
    position: relative;
}

.circle {
    width: 100%;
    height: 100%;
    border: 18px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: pulse 4s infinite ease-in-out; /* Büyüme ve küçülme animasyonu */
    position: relative;
}

.inner-circle {
    width: 70%;
    height: 70%;
    border-radius: 50%;
    position: absolute;
    top: 15%;
    left: 15%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.center-logo {
    width: 150px;
    height: auto;
}

@keyframes pulse {
    0% {
        transform: scale(2.25);
    }
    50% {
        transform: scale(2.35); /* Çemberin büyüme oranı */
    }
    100% {
        transform: scale(2.25);
    }
}

/* Footer styling */
footer {
    position: absolute;
    bottom: 10px;
    text-align: center;
    width: 100%;
    font-size: 0.9rem;
    opacity: 0.7;
}