:root {
    --bg-color: #0b0e14;
    --text-color: #f8f8f8;
}

body,
html {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    scroll-behavior: smooth;
    background: radial-gradient(circle at center, #161b22 0%, #0b0e14 100%);
    background-attachment: fixed;
}

.hero {
    height: 88vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero-content {
    transform: translateY(-4vh);
}

h1 {
    font-size: 7rem;
    font-weight: 100;
    letter-spacing: 2px;
    margin-bottom: 6rem;
    padding: 2rem;
    color: var(--text-color);
    text-shadow: 0 0 5px var(--text-color);
}

.enter-btn {
    padding: 18px 50px;
    border-radius: 16px;
    border: 2px solid var(--text-color);
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 1.2rem;
    letter-spacing: 3px;
    background: rgba(255, 255, 255, 0.05);
}

.enter-btn:hover {
    background: var(--text-color);
    color: var(--bg-color);
}


.theme-grid {
    padding: min(100px, 5vw);
    display: grid;
    grid-template-columns: repeat(auto-fit, 484px);
    gap: min(100px, 20vw);
    justify-content: center;
    align-content: start;
    margin-top: -5vh;
    position: relative;
    z-index: 10;
}

.theme-card {
    width: 484px;
    height: 308px;
    overflow: hidden;
    position: relative;
    border-radius: 16px;
    border-style: solid;
    border-width: 3px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background-color: #161b22;
}

.theme-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.theme-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6),
        0 0 20px rgba(255, 255, 255, 0.05);
}

footer {
    padding: 80px 10% 40px 10%;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: var(--bg-color);
    color: rgba(248, 248, 248, 0.4);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links a {
    color: rgba(248, 248, 248, 0.4);
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s ease;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.footer-links a:hover {
    color: var(--text-color);
}