:root {
    --black: #0d0d0d;
    --red: #D72638;
    --dark-red: #320000;
    --yellow: #FFD700;
    --white: #f2f2f2;
    --gray-dark: #222;
    --shadow-red: rgba(215, 38, 56, 0.5);
    --shadow-yellow: rgba(255, 215, 0, 0.6);
    --transition: 0.3s ease-in-out;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Prompt', sans-serif;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: inherit;
    text-decoration: none;
}

.banner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin: 2rem 0;
}

.banner a {
  display: block;
  flex: 1 1 300px;
  max-width: 480px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 12px;
  overflow: hidden;
}

.banner a img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.banner a:hover img,
.banner a:focus img {
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.6);
}


nav {
    background-color: var(--gray-dark);
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
    z-index: 999;
}

nav a {
    font-weight: 600;
    font-size: 1rem;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    transition: background-color var(--transition);
}

nav a:hover,
nav a:focus {
    background-color: var(--red);
    color: var(--yellow);
    outline-offset: 2px;
}

header {
    text-align: center;
    padding: 1.75rem 1rem;
    box-shadow: 0 4px 12px var(--shadow-red);
}

header h1 {
    color: var(--yellow);
    margin: 0;
    font-size: clamp(1.6rem, 5vw, 2.4rem);
    font-weight: 800;
    text-shadow: 0 0 6px var(--shadow-yellow);
}

.container {
    max-width: 1080px;
    margin: auto;
    padding: 2rem 1rem;
}

h2,
h3 {
    font-weight: 800;
    letter-spacing: 0.05em;
    user-select: none;
}

h2 {
    color: var(--yellow);
    border-bottom: 3px solid var(--red);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

h3 {
    color: var(--red);
    margin-top: 2rem;
}

p,
li {
    font-size: 1rem;
    line-height: 1.5;
}

.game-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-top: 1rem;
}

.game-card {
    background-color: var(--gray-dark);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    cursor: pointer;
}

.game-card:hover,
.game-card:focus {
    background-color: var(--red);
    transform: translateY(-6px);
    box-shadow: 0 6px 16px var(--shadow-red);
}

.game-card:hover h3,
.game-card:focus h3 {
     color: var(--yellow);
}

.game-card img {
    width: 50%;
    object-fit: cover;
    border-radius: 8px;
    filter: drop-shadow(0 0 4px var(--shadow-yellow));
    transition: filter var(--transition);
}

.game-card:hover img {
    filter: drop-shadow(0 0 8px var(--shadow-yellow));
}


.main-menu {
    display: flex;
    padding: 5px;
}


.btn {
    display: inline-block;
    color: var(--white);
    padding: 0.5rem 2rem;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 10px;
    margin: 0.8rem;
    transition: all var(--transition);
    text-align: center;
    background-color: var(--red);
}

.btn:hover,
.btn:focus {
    background-color: var(--red);
    color: var(--yellow);
}

footer {
    background-color: var(--gray-dark);
    color: var(--white);
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .game-list {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}

.btn-register {
    background-color: var(--red);
}

.btn-login {
    background-color: var(--gray-dark);
}

.box-center {
    display: flex;
    justify-content: center;
}
