:root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --accent-color: #90ee90; /* Açık yeşil detaylar */
    --card-bg: #1e1e1e;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    line-height: 1.6;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
    padding: 20px 0;
}

header {
    background: #0a0a0a;
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: 3px solid var(--accent-color);
}

header h1 {
    float: left;
    margin: 0;
    font-size: 2rem;
    letter-spacing: 2px;
}

header nav {
    float: right;
    margin-top: 10px;
}

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

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

header nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

header nav a:hover {
    color: var(--accent-color);
}

section {
    background: var(--card-bg);
    margin: 20px 0;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

h2, h3 {
    color: var(--accent-color);
}

footer {
    text-align: center;
    padding: 20px;
    background: #0a0a0a;
    color: #777;
    margin-top: 40px;
}