:root {
    --bg: #000000;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border: #333333;
    --accent: #ffffff;
    --accent-text: #000000;
    --glow: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] {
    --bg: #ffffff;
    --text-primary: #1d1d1b;
    --text-secondary: #555555;
    --border: #e2e8f0;
    --accent: #1d1d1b;
    --accent-text: #ffffff;
    --glow: rgba(0, 0, 0, 0.03);
}

.logo-light {
    display: none;
}

.logo-dark {
    display: block;
}

[data-theme="light"] .logo-light {
    display: block;
}

[data-theme="light"] .logo-dark {
    display: none;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px auto;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    transition: background 0.2s, color 0.2s;
}

.theme-toggle:hover {
    background: rgba(128, 128, 128, 0.1);
    color: var(--text-primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

[data-theme="light"] .title {
    background: linear-gradient(180deg, #111111 0%, #666666 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: 'Google Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

/* A very subtle glow effect at the top center */
.glow {
    position: absolute;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse at center, var(--glow) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
    padding: 0 20px;
    min-height: 100vh;
    text-align: center;
}

header {
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.logo {
    height: 42px;
    width: auto;
    opacity: 0.9;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: -50px;
}


.title {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    background: linear-gradient(180deg, #FFFFFF 0%, #999999 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    line-height: 1.6;
    margin-bottom: 48px;
    font-weight: 400;
}



.game-container {
    width: 100%;
    max-width: 600px;
    height: 180px;
    margin: 0 auto 40px auto;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    z-index: 2;
    background: transparent;
}

.game-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    pointer-events: auto;
}

footer {
    position: absolute;
    bottom: 30px;
    font-size: 0.85rem;
    color: #444;
}

.about {
    max-width: 650px;
    margin: -10px auto 40px auto;
    text-align: center;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.about h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.about p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .title {
        font-size: 3.5rem;
    }
}