body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f9f9f9;
    color: #333;
}

header {
    background: #0066cc;
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 { margin: 0; }

nav a {
    color: white;
    margin-left: 15px;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
}

.hero input {
    padding: 8px;
    width: 50%;
    max-width: 300px;
    border: none;
    border-radius: 4px;
}

.hero button {
    padding: 8px 15px;
    border: none;
    background: #fff;
    color: #333;
    cursor: pointer;
    border-radius: 4px;
}

.category-grid, .ad-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px;
}

.cat-card, .ad-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.premium {
    border: 2px solid gold;
    background: #fff9e6;
}

footer {
    text-align: center;
    padding: 10px;
    background: #222;
    color: white;
    margin-top: 20px;
}

@media (max-width: 768px) {
    .hero input {
        width: 80%;
    }
}
/* ======= SABİT BAŞLIQ DİZAYNI ======= */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #0073e6;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 40px;
    z-index: 1000;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.logo a {
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    text-decoration: none;
}

.main-nav {
    display: flex;
    gap: 25px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: #ffeb3b;
}

.auth-links a {
    margin-left: 15px;
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

.signup-btn {
    background: #ffeb3b;
    color: #333 !important;
    padding: 6px 10px;
    border-radius: 5px;
}

.logout-btn {
    background: #ff5252;
    color: #fff !important;
    padding: 6px 10px;
    border-radius: 5px;
}

/* Kontentin başlıqdan aşağıda qalması üçün */
body {
    padding-top: 70px;
}