body {
    margin-bottom: 72px;
}
.content {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 20px;
}

.category {
    margin: 30px 0;
}

h5 {
    text-align: center;
    font-size: 1.1rem;
    color: #a0aab5;
    font-weight: 400;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

h2 {
    text-align: center;
    font-size: 2rem;
    color: #a0aab5;
    font-weight: 400;
    margin-bottom: 10px;
    letter-spacing: 1px;
}


.center {
    justify-content: center;
    align-items: center;
    text-align: center;
    margin: 0 auto;
}

a {
    color: yellow;
    text-decoration: none;
    font-weight: bold;
}

footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    /*background-color: #333;*/
    color: white;
    text-align: center;
    padding: 10px;
    box-sizing: border-box;
    height: 36px;
    opacity: 1;
    z-index: 9999;
    border-top: 1px solid #00e5ff;
    background: linear-gradient(180deg, #515961 0%, #2e3338 100%);
}

.btn {
    appearance: none;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: #ffffff;
    cursor: pointer;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: transform 0.06s ease, box-shadow 0.2s ease, background 0.2s ease, filter 0.2s ease;
    filter: brightness(0.8);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: linear-gradient(180deg, #00e5ff 0%, #00b8d4 100%);
}

.btn-primary:hover {
    filter: brightness(1.08);
}

.btn-secondary {
    background: linear-gradient(180deg, #7a8591 0%, #5b6570 100%);
}

.btn-secondary:hover {
    filter: brightness(1.08);
}

.btn-accent {
    background: linear-gradient(180deg, #ff5f6d 0%, #ff3d54 100%);
}

.btn-accent:hover {
    filter: brightness(1.08);
}