:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --text: #15181d;
    --muted: #59606b;
    --border: #dde1e6;
    --danger: #b3261e;
    --danger-text: #ffffff;
    --focus: #1a73e8;
    --accent: #072f5d;
    --accent-text: #ffffff;
    color-scheme: light;
}
body[data-app="jokes"] { --accent: #5a3be0; }

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #101317;
        --surface: #1a1e24;
        --text: #eceff3;
        --muted: #a5adb8;
        --border: #2d333b;
        --danger: #f2b8b5;
        --danger-text: #601410;
        --focus: #8ab4f8;
        --accent: #a8c7fa;
        --accent-text: #0b1d36;
        color-scheme: dark;
    }
    body[data-app="jokes"] { --accent: #c6b9ff; --accent-text: #21106b; }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header.brand {
    background: var(--accent);
    color: var(--accent-text);
    padding: 20px 16px;
}
header.brand .inner, main, footer { max-width: 640px; margin: 0 auto; }
header.brand a { color: inherit; text-decoration: none; font-weight: 700; font-size: 1.15rem; }

main { padding: 24px 16px 8px; }

h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 0 0 12px; }
h2:focus { outline: none; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.muted { color: var(--muted); }
ul { padding-left: 20px; }
li { margin: 4px 0; }

.buttons { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }

button, .button {
    font: inherit;
    font-weight: 600;
    border-radius: 999px;
    padding: 10px 20px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    min-height: 44px;
}
a.button { display: inline-flex; align-items: center; text-decoration: none; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.danger { background: var(--danger); color: var(--danger-text); border-color: var(--danger); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

label.check { display: flex; gap: 10px; align-items: flex-start; margin-top: 12px; }
label.check input { width: 20px; height: 20px; margin-top: 3px; flex: none; }

.error {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--danger);
    color: var(--danger);
}

a { color: var(--accent); }
@media (prefers-color-scheme: dark) { a { color: var(--accent); } }

footer { padding: 8px 16px 40px; font-size: 0.9rem; }
footer p { margin: 6px 0; }