:root {
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --text: #1c1e21;
    --text-muted: #6b7280;
    --border: #e3e5e8;
    --accent: #2454ff;
    --accent-text: #ffffff;
    --warn-bg: #fff4e5;
    --warn-text: #9a5b00;
    --ok-bg: #e8f7ee;
    --ok-text: #146c3c;
    --error: #b3261e;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
}

.page {
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 24px;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    text-decoration: none;
}

.brand-sub {
    color: var(--text-muted);
    font-size: 0.85rem;
}

main { flex: 1; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

h1 {
    margin-top: 0;
    font-size: 1.4rem;
}

.lede {
    color: var(--text-muted);
}

.scan-form {
    display: flex;
    gap: 8px;
    margin: 20px 0 8px;
}

.scan-form input[type="text"] {
    flex: 1;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
}

.scan-form input[type="text"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: -1px;
}

button, .button {
    background: var(--accent);
    color: var(--accent-text);
    border: none;
    border-radius: 8px;
    padding: 11px 20px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

button:hover, .button:hover { opacity: 0.9; }

.hint {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.error {
    background: #fdecea;
    color: var(--error);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.9rem;
}

.explainer {
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
    font-size: 0.92rem;
}

.explainer summary {
    cursor: pointer;
    font-weight: 600;
}

.explainer ol { padding-left: 20px; }

.spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 20px 0;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.summary-line { margin: 18px 0; }

.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
}

.badge-warn { background: var(--warn-bg); color: var(--warn-text); }
.badge-ok { background: var(--ok-bg); color: var(--ok-text); }

.findings {
    margin: 20px 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
}

.findings dt {
    color: var(--text-muted);
    font-size: 0.88rem;
    white-space: nowrap;
}

.findings dd {
    margin: 0;
    font-weight: 500;
}

.another { margin-top: 24px; }
.another a { color: var(--accent); text-decoration: none; }

.site-footer {
    margin-top: 32px;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-align: center;
}

code {
    background: #f0f1f3;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    word-break: break-all;
}