:root {
    color-scheme: light;
    --bg: #f4f7f5;
    --surface: #ffffff;
    --text: #14201a;
    --muted: #64756b;
    --line: #d8e2dc;
    --brand: #147a4b;
    --brand-dark: #0f5d3a;
    --danger: #b42318;
    --warning: #9a6200;
    --ok: #16704a;
}

* { box-sizing: border-box; }

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

.page-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 60px;
}

.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 0.88rem;
}

.breadcrumbs a { color: var(--brand); font-weight: 800; text-decoration: none; }
.breadcrumbs a:hover, .breadcrumbs a:focus { text-decoration: underline; }

.hero { padding: 28px 0 30px; }
.hero h1 { max-width: 850px; margin: 0; font-size: clamp(2.15rem, 5vw, 4.15rem); line-height: 1; letter-spacing: 0; }
.hero p { max-width: 780px; margin: 18px 0 0; color: var(--muted); font-size: 1.08rem; }

h2, h3, h4 { letter-spacing: 0; }
.tool-panel, .generator { padding: 26px 0 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tool-panel h2, .generator h2, .results h2, .seo-content h2, .related-links h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 2rem); }
.section-intro, .generator > p { max-width: 760px; margin: 8px 0 22px; color: var(--muted); }

form { display: grid; gap: 18px; }
.field { min-width: 0; }
.field label { display: block; margin: 0 0 8px; font-weight: 800; }
.two-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }

input, textarea {
    width: 100%;
    padding: 12px 14px;
    color: var(--text);
    background: #fbfdfc;
    border: 1px solid #bdcbc3;
    border-radius: 6px;
    font: inherit;
}

input { min-height: 50px; }
textarea { min-height: 116px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.91rem; }
input:focus, textarea:focus { outline: 3px solid rgba(20, 122, 75, 0.18); border-color: var(--brand); }

button {
    justify-self: start;
    min-height: 50px;
    padding: 0 21px;
    color: #fff;
    background: var(--brand);
    border: 1px solid var(--brand);
    border-radius: 6px;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}
button:hover, button:focus { background: var(--brand-dark); border-color: var(--brand-dark); }

.alert-list { display: grid; gap: 10px; margin: 20px 0; }
.alert { margin: 0; padding: 14px 16px; color: var(--danger); background: #fff5f3; border-left: 3px solid var(--danger); font-weight: 700; }

.results { margin: 30px 0; padding: 28px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.source-line { margin: 10px 0 0; color: var(--muted); overflow-wrap: anywhere; }
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 22px; }
.summary-grid.six { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.summary-grid > div { display: grid; gap: 3px; min-width: 0; padding-top: 12px; border-top: 2px solid var(--line); }
.summary-grid strong { font-size: 1.55rem; line-height: 1.15; overflow-wrap: anywhere; }
.summary-grid span { color: var(--muted); font-size: 0.9rem; }

.verdict { margin-top: 24px; padding: 16px 0 0; border-top: 2px solid var(--ok); }
.verdict.is-blocked { border-color: var(--danger); }
.verdict > span { display: block; color: var(--muted); font-size: 0.88rem; font-weight: 800; text-transform: uppercase; }
.verdict > strong { display: block; margin-top: 3px; color: var(--ok); font-size: 1.4rem; }
.verdict.is-blocked > strong { color: var(--danger); }
.verdict p { margin: 7px 0 0; }

.issues { margin-top: 28px; }
.issues > h3, .location-list h3 { margin: 0 0 10px; font-size: 1.05rem; }
.issue { display: grid; grid-template-columns: 74px minmax(0, 1fr); gap: 14px; padding: 14px 0; border-top: 1px solid var(--line); }
.issue > span { color: var(--muted); font-size: 0.78rem; font-weight: 900; text-transform: uppercase; }
.issue-critical > span { color: var(--danger); }
.issue-warning > span { color: var(--warning); }
.issue h4, .issue p { margin: 0; }
.issue p { margin-top: 3px; color: var(--muted); }
.no-issues { margin: 0; color: var(--ok); font-weight: 800; }
.location-list { margin-top: 25px; }
.location-list p { margin: 4px 0; color: var(--muted); overflow-wrap: anywhere; }

.generated-output { margin: 20px 0 0; padding: 18px; overflow-x: auto; color: var(--text); background: #eaf2ed; border: 0; border-radius: 6px; font-size: 0.92rem; }
.generator { margin-top: 34px; }

.seo-content { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--line); }
.seo-content > p { max-width: 860px; margin: 12px 0 0; color: var(--muted); }
.content-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 30px; margin-top: 28px; }
.content-grid article h3 { margin: 0 0 7px; font-size: 1.05rem; }
.content-grid article p { margin: 0; color: var(--muted); }

.related-links { margin-top: 34px; padding-top: 25px; border-top: 1px solid var(--line); }
.related-links h2 { font-size: 1.15rem; }
.related-links div { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 13px; }
.related-links a { color: var(--brand); font-weight: 800; text-decoration-thickness: 2px; text-underline-offset: 5px; }

@media (max-width: 880px) {
    .summary-grid.six { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
    .page-shell { width: min(100% - 22px, 1120px); padding-top: 20px; }
    .breadcrumbs { margin-bottom: 10px; font-size: 0.8rem; }
    .hero { padding: 18px 0 24px; }
    .hero h1 { font-size: 2.05rem; line-height: 1.03; }
    .hero p { margin-top: 12px; font-size: 1rem; }
    .tool-panel, .generator { padding: 21px 0 24px; }
    .two-fields, .content-grid { grid-template-columns: 1fr; }
    .summary-grid, .summary-grid.six { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
    .summary-grid strong { font-size: 1.35rem; }
    .issue { grid-template-columns: 1fr; gap: 4px; }
    button { width: 100%; justify-self: stretch; }
}