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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #0d253f;
    padding: 15px 30px;
    color: #fff;
}

header .logo {
    font-size: 1.4rem;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
}

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    transition: 0.3s;
}

nav ul li a:hover {
    color: #00bcd4;
}

.hero {
    background: url('https://picsum.photos/1600/600?grayscale') no-repeat center center/cover;
    height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.btn {
    background: #00bcd4;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    transition: 0.3s;
}

.btn:hover {
    background: #02889a;
}

footer {
    background: #0d253f;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
    position: relative;
    bottom: 0;
    width: 100%;
}


/* Bootstrap sayfalarında da çalışması için */
html,
body {
    height: 100%;
}

main,
section,
header {
    flex: 1;
}