body {
    background: linear-gradient(135deg, #2E8B57, #006666);  /* Koyu ve parlak safir yeşili tonları */
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 40px 0;
}

.category-box {
    transition: all 0.3s ease;
    background: linear-gradient(145deg, #ffd700, #b8860b);
    border: none;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-bottom: 30px;
}

.category-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.category-name {
    color: #2c1810;
    font-weight: bold;
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.category-count {
    color: #4a3520;
    font-size: 1.1rem;
}

.login-prompt {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.login-btn {
    background: linear-gradient(45deg, #bf953f, #b38728);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 10px 30px;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #fff;
}