:root {
    --bg: #f3f5f9;
    --card: #ffffff;
    --text: #172033;
    --muted: #5b667a;
    --line: #cfd6e3;
    --accent: #1f5fd1;
    --accent-text: #ffffff;
    --danger-bg: #fdecec;
    --danger: #a11d1d;
    --ok: #1b7a43;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1522;
        --card: #182033;
        --text: #eaeef7;
        --muted: #9aa6bd;
        --line: #33405c;
        --accent: #5b8def;
        --accent-text: #0b1220;
        --danger-bg: #3a1c1f;
        --danger: #ff9b9b;
        --ok: #5fd38d;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 16px;
    background: var(--bg);
    color: var(--text);
    font: 17px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.card {
    width: 100%;
    max-width: 440px;
    margin-top: 4vh;
    padding: 24px 20px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
}

h1 { margin: 0 0 16px; font-size: 1.5rem; }
h2 { margin: 24px 0 8px; font-size: 1.1rem; }

label, legend { display: block; margin: 16px 0 6px; font-weight: 600; }

input[type="text"], input[type="password"] {
    width: 100%;
    padding: 14px;
    font: inherit; /* 16px+ verhindert Zoom auf iOS */
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 10px;
}

input:focus-visible, .btn:focus-visible, .choice input:focus-visible + span {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }

.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.choice { margin: 0; position: relative; }
.choice input { position: absolute; opacity: 0; inset: 0; }
.choice span {
    display: block;
    padding: 18px 8px;
    text-align: center;
    font-weight: 600;
    background: var(--bg);
    border: 2px solid var(--line);
    border-radius: 12px;
    cursor: pointer;
}
.choice input:checked + span {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--accent-text);
}

.btn {
    display: block;
    width: 100%;
    margin-top: 24px;
    padding: 16px;
    font: inherit;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    color: var(--accent-text);
    background: var(--accent);
    border: 0;
    border-radius: 12px;
    cursor: pointer;
}
.btn.secondary { color: var(--text); background: transparent; border: 1px solid var(--line); }
.btn.danger { background: var(--danger); color: var(--card); }

.alert {
    margin: 0 0 8px;
    padding: 12px 14px;
    color: var(--danger);
    background: var(--danger-bg);
    border-radius: 10px;
}
.notice { margin: 0 0 8px; padding: 12px 14px; color: var(--ok); border: 1px solid var(--ok); border-radius: 10px; }

.done { text-align: center; }
.check { font-size: 3rem; color: var(--ok); line-height: 1; margin-bottom: 8px; }

.muted { color: var(--muted); font-size: .9rem; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 8px 0 0; }
.stat { padding: 12px 6px; text-align: center; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
.stat b { display: block; font-size: 1.5rem; }
.confirm { display: flex; gap: 10px; align-items: center; font-weight: 400; margin: 12px 0; }
.confirm input { width: 22px; height: 22px; }

/* Honeypot: für Menschen unsichtbar */
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }