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

/* Body */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f5f7fa;
    color: #333;
}

/* Header */
.site-header {
    background-color: #1a1a1a;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

/* Logo */
.logo-placeholder {
    width: 80px;
    height: 40px;
    background-color: #444;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 14px;
    border-radius: 4px;
}

/* Navigation */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    padding: 6px 12px;
    border-radius: 4px;
    transition: background 0.3s;
}

.main-nav a:hover {
    background-color: #555;
}

.main-nav a.active {
    background-color: #f39c12;
    color: #fff;
}

/* Main content */
.site-main {
    max-width: 900px;
    margin: 50px auto;
    padding: 0 20px;
    text-align: center;
}

.site-main h1 {
    margin-bottom: 20px;
    font-size: 2em;
    color: #222;
}

/* Footer */
.site-footer {
    background-color: #1a1a1a;
    color: #fff;
    text-align: center;
    padding: 15px;
    margin-top: 50px;
    font-size: 14px;
}