/* --- Genel Ayarlar ve Sıfırlama --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

.container {
    max-width: 960px;
    margin: auto;
    overflow: hidden;
    padding: 0 20px;
}

/* --- Header (Üst Kısım) ve Navigasyon --- */
header {
    background: #ffffff;
    padding: 1rem 0;
    border-bottom: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #0056b3;
    text-decoration: none;
}

nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

nav ul li {
    display: inline;
    margin-left: 20px;
}

nav a {
    color: #555;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    color: #0056b3;
}

/* --- Ana İçerik Alanları --- */
main {
    padding: 2rem 0;
}

.hero {
    background: #007bff;
    color: #ffffff;
    padding: 4rem 20px;
    text-align: center;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero p {
    font-size: 1.2rem;
}

.content-section {
    background: #ffffff;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.content-section h2 {
    color: #0056b3;
    border-bottom: 2px solid #f4f4f4;
    padding-bottom: 0.5rem;
    margin-top: 0;
}

/* --- Footer (Alt Kısım) --- */
footer {
    text-align: center;
    padding: 2rem 0;
    background: #333;
    color: #fff;
    margin-top: 2rem;
}