:root {
    --bg: #66bb6a;
    --surface: #ffffff;
    --text: #1d2420;
    --border: #d8ddd9;
    --accent: #1565c0;
    --accent-text: #ffffff;
    --danger: #b3261e;
    color-scheme: light;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main { max-width: 640px; margin: 0 auto; padding: 0 16px 32px; }

h1 { margin: 32px 0 16px; color: #fff; font-size: 2rem; text-align: center; }

.card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    background: var(--surface);
    border-radius: 16px;
}

label { display: block; }

input[type="email"], input[type="password"] {
    width: 100%;
    margin-top: 4px;
    padding: 10px 12px;
    font: inherit;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.check { display: flex; align-items: center; gap: 8px; }

button {
    padding: 10px 16px;
    font: inherit;
    color: var(--accent-text);
    background: var(--accent);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
}

.error { margin: 0; color: var(--danger); }

.games {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.games a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 200px;
    padding: 20px 12px;
    color: var(--accent);
    font-weight: 700;
    font-size: 1.25rem;
    text-align: center;
    text-decoration: none;
    background: var(--surface);
    border-radius: 20px;
    box-shadow: 0 6px 0 #0d47a1;
}

.games span { font-size: 4rem; line-height: 1; }

h2 { margin: 0; font-size: 1.125rem; }

.card + .card { margin-top: 16px; }

.hint { margin: 0; color: #66706a; font-size: 0.875rem; }

.review { margin: 0; padding-left: 20px; }

table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }

th, td { padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--border); }

th { font-weight: 600; }

.links { margin: 24px 0 0; text-align: center; }

.links a { color: #fff; }