/* nsusosed.ru — one stylesheet for every page. Mobile first: the base rules
   are for phones, the @media (min-width) blocks add room on bigger screens. */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5b6470;
  --border: #d5dae1;
  --primary: #1f5fbf;
  --primary-hover: #184c99;
  --primary-text: #ffffff;
  --focus: #f0a400;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --success: #1e7a3c;
  --success-bg: #e8f5ec;
  --info-bg: #e8f0fb;
  --warn: #8a5a00;
  --warn-bg: #fff4dc;
  --radius: 10px;
  --space: 16px;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171b;
    --surface: #1d2126;
    --text: #e8eaed;
    --muted: #a3abb5;
    --border: #3a414a;
    --primary: #6aa5ff;
    --primary-hover: #8fbbff;
    --primary-text: #0d1726;
    --danger: #ff8a80;
    --danger-bg: #3a1f1d;
    --success: #7fd39a;
    --success-bg: #1b3324;
    --info-bg: #1c2a3d;
    --warn: #ffcf70;
    --warn-bg: #3a2f17;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--font);
}

main { flex: 1; }
main:focus { outline: none; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 0.75em; }
p:last-child { margin-bottom: 0; }

a { color: var(--primary); text-underline-offset: 2px; }
a:hover { color: var(--primary-hover); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

[hidden] { display: none !important; }

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--surface);
  border-radius: var(--radius);
}
.skip-link:focus { top: 8px; }

/* ---------- layout ---------- */

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px var(--space) 48px;
}
.container.narrow { max-width: 720px; }

.stack > * + * { margin-top: var(--space); }

.lead { font-size: 1.05rem; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.hint { font-size: 0.875rem; color: var(--muted); margin: 4px 0 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space);
  margin-bottom: var(--space);
}
.card-danger { border-color: var(--danger); }

.grid-2, .grid-3 { display: grid; gap: var(--space); }

@media (min-width: 600px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .container { padding-top: 32px; }
  h1 { font-size: 2rem; }
}

/* ---------- header / footer ---------- */

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 8px var(--space);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  padding: 8px 0;
}
.lang-switch {
  margin-left: auto;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font: inherit;
  font-size: 0.875rem;
  cursor: pointer;
  min-height: 36px;
}
.lang-switch:hover { border-color: var(--primary); }

/* On phones the menu takes its own row and wraps if it doesn't fit. */
.site-nav {
  order: 3;
  width: 100%;
}
.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
}
.site-nav a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav a:hover { background: var(--bg); }
.site-nav a[aria-current='page'] {
  background: var(--info-bg);
  color: var(--primary);
  font-weight: 600;
}

@media (min-width: 760px) {
  .site-nav { order: 0; width: auto; }
  .site-nav ul { padding: 0; }
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}
.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px var(--space) 24px;
}
.footer-inner p { margin: 0 0 4px; }

.mock-banner {
  background: var(--warn-bg);
  color: var(--warn);
  padding: 6px var(--space);
  font-size: 0.875rem;
  text-align: center;
}
.mock-banner a { color: inherit; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--primary-text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: var(--primary-text); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-secondary { background: transparent; color: var(--primary); }
.btn-secondary:hover { background: var(--info-bg); color: var(--primary); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger); filter: brightness(0.9); color: #fff; }
.btn-link {
  background: none;
  border-color: transparent;
  color: var(--primary);
  font-weight: 400;
  padding-left: 0;
  padding-right: 0;
  text-decoration: underline;
}
.btn-link:hover { background: none; border-color: transparent; color: var(--primary-hover); }
.btn-link:disabled { color: var(--muted); text-decoration: none; opacity: 1; }
.btn-small { min-height: 36px; padding: 6px 12px; font-size: 0.875rem; }

.btn.is-busy::after,
.spinner {
  content: '';
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .btn.is-busy::after, .spinner { animation-duration: 3s; }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  margin-top: var(--space);
}
.stack > .actions { margin-top: var(--space); }

/* ---------- forms ---------- */

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  min-width: 0;
}
legend {
  font-weight: 600;
  padding: 0;
  margin-bottom: 8px;
}
form fieldset + fieldset,
form > fieldset + .field,
form > .field + fieldset { margin-top: 24px; }

.field + .field { margin-top: var(--space); }
.grid-2 > .field + .field, .grid-3 > .field + .field { margin-top: 0; }

.field > label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}
.req { color: var(--danger); }

input[type='text'], input[type='email'], input[type='number'], input:not([type]), select, textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 0.8; }
input:focus-visible, select:focus-visible, textarea:focus-visible { border-color: var(--primary); }

[aria-invalid='true'] { border-color: var(--danger) !important; }
.field-error {
  color: var(--danger);
  font-size: 0.9rem;
  margin: 6px 0 0;
}
.has-error > fieldset > legend { color: var(--danger); }

.input-code {
  max-width: 12ch;
  font-size: 1.5rem !important;
  letter-spacing: 0.3em;
  font-variant-numeric: tabular-nums;
}
.input-mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9rem !important; }
.input-row { display: flex; gap: 8px; }
.input-row input { flex: 1; min-width: 0; }

.field-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.field-check > label { font-weight: 400; margin: 0; }
.field-check > .field-error { flex-basis: 100%; }
.field-check { flex-wrap: wrap; }

input[type='checkbox'], input[type='radio'] {
  width: 22px;
  height: 22px;
  margin: 1px 0 0;
  flex-shrink: 0;
  accent-color: var(--primary);
}

.choices { display: grid; gap: 6px; }
.choices > legend { margin-bottom: 8px; }
.choice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.choice:has(input:checked) { border-color: var(--primary); background: var(--info-bg); }
.choice label { flex: 1; cursor: pointer; }
.choice label .hint { display: block; }
.choices-inline { grid-template-columns: 1fr 1fr; }
.choices-inline > legend { grid-column: 1 / -1; }

.range-row { display: flex; align-items: center; gap: 12px; }
.range-row input[type='range'] { flex: 1; min-height: 44px; accent-color: var(--primary); }
.range-value {
  min-width: 2.5ch;
  font-weight: 700;
  font-size: 1.15rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.counter { text-align: right; }

/* ---------- questionnaire ---------- */

.question { padding-top: 20px; }
.question > * + * { margin-top: var(--space); }
.question-title { font-size: 1.1rem; }
.question-number { color: var(--muted); }

/* ---------- alerts, toast, dialog ---------- */

.alert {
  border-radius: var(--radius);
  padding: 12px var(--space);
  margin: var(--space) 0;
  border: 1px solid transparent;
}
.alert-error { background: var(--danger-bg); border-color: var(--danger); color: var(--text); }
.alert-success { background: var(--success-bg); border-color: var(--success); }
.alert-info { background: var(--info-bg); border-color: var(--primary); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 50;
  max-width: calc(100% - 32px);
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--text);
  color: var(--bg);
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.2);
}

.dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 20px;
  width: min(440px, calc(100% - 32px));
}
.dialog::backdrop { background: rgb(0 0 0 / 0.45); }

.loading { display: flex; align-items: center; gap: 10px; color: var(--muted); padding: 24px 0; }

.empty { text-align: center; padding: 32px var(--space); }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
}
.badge-ok { background: var(--success-bg); border-color: var(--success); color: var(--success); }
.badge-warn { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }

/* ---------- matches ---------- */

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin: 24px 0 var(--space);
}
.tabs [role='tab'] {
  flex: 1;
  min-height: 44px;
  padding: 10px 16px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: none;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.tabs [role='tab'][aria-selected='true'] { color: var(--primary); border-bottom-color: var(--primary); }
@media (min-width: 600px) { .tabs [role='tab'] { flex: 0 0 auto; } }

#panel:focus-visible { outline-offset: 6px; }

.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space); }
@media (min-width: 760px) { .cards { grid-template-columns: 1fr 1fr; } }
.cards .card { margin: 0; height: 100%; }

.match-card { position: relative; }
.match-card:hover { border-color: var(--primary); }
.match-card:focus-within { border-color: var(--primary); }
.match-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.match-title { font-size: 1.1rem; margin: 0; }
.match-title a { color: var(--text); text-decoration: none; }
.match-title a:hover { text-decoration: underline; }
/* Makes the whole card clickable while the link stays the only focus stop. */
.stretched-link::after { content: ''; position: absolute; inset: 0; border-radius: var(--radius); }
.stretched-link:focus-visible { outline: none; }
.stretched-link:focus-visible::after { outline: 3px solid var(--focus); outline-offset: 2px; }

.meta { display: flex; flex-wrap: wrap; gap: 4px 16px; color: var(--muted); font-size: 0.9rem; margin: 8px 0; }

.score { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.1; flex-shrink: 0; }
.score-value { font-size: 1.6rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.score-label { font-size: 0.75rem; color: var(--muted); }
.score-high .score-value { color: var(--success); }
.score-mid .score-value { color: var(--primary); }
.score-low .score-value { color: var(--warn); }

.explain, .warnings, .breakdown, .residents, .steps { margin: 8px 0 0; padding: 0; list-style: none; }
.explain li { display: flex; gap: 6px; font-size: 0.95rem; }
.explain-icon { width: 1.2em; text-align: center; font-weight: 700; flex-shrink: 0; }
.explain-similar .explain-icon { color: var(--success); }
.explain-minor_difference .explain-icon { color: var(--primary); }
.explain-noticeable_difference .explain-icon { color: var(--warn); }

.warnings li {
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--warn-bg);
  color: var(--text);
  font-size: 0.9rem;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- listing detail / my listing ---------- */

.detail-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.detail-head h1, .detail-head h2 { margin: 0; }

details { margin-top: var(--space); }
summary { cursor: pointer; color: var(--primary); min-height: 32px; }

.breakdown li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.breakdown li:last-child { border-bottom: 0; }
.breakdown p { margin: 0; }
.breakdown-title .topic::first-letter { text-transform: uppercase; }
.breakdown-title { font-weight: 600; }

.facts { display: grid; gap: 8px 16px; margin: 0; }
.facts div { display: grid; grid-template-columns: minmax(8em, 40%) 1fr; gap: 12px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

.description { white-space: pre-line; margin-top: var(--space); }

.residents li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.residents li:last-child { border-bottom: 0; }

.contact { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 1.1rem; margin-top: var(--space); }
.contact-type { color: var(--muted); }

.status-card.status-hidden { border-color: var(--warn); }

/* ---------- home / text pages ---------- */

.hero { padding: 16px 0 24px; }
.steps { counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding: 6px 0 6px 40px; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 4px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--info-bg);
  color: var(--primary);
  font-weight: 700;
  display: grid;
  place-items: center;
}

.prose h2 { margin-top: 1.5em; }
.prose ul { padding-left: 1.25em; }
.prose li + li { margin-top: 4px; }