:root {
  --bg: #f7f8fa;
  --bg-elevated: #ffffff;
  --bg-sunken: #eef0f4;
  --text: #16181d;
  --text-muted: #5d6470;
  --border: #dfe3ea;
  --accent: #2f6fed;
  --accent-soft: #e6eefd;
  --good: #128a5b;
  --warn: #b25e00;
  --bad: #c2334d;
  --bar: #9aa4b6;
  --bar-subject: #2f6fed;
  --radius: 10px;
  --wrap: 1120px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --bg-elevated: #161a21;
    --bg-sunken: #1c2128;
    --text: #e7eaf0;
    --text-muted: #97a0ae;
    --border: #262c36;
    --accent: #5c8dff;
    --accent-soft: #16233d;
    --good: #3fbb87;
    --warn: #e0a04a;
    --bad: #ef6a80;
    --bar: #48515f;
    --bar-subject: #5c8dff;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, .mono { font-family: var(--mono); font-size: 0.9em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--text-muted); }
.small { font-size: 0.875rem; }

/* --- Шапка --- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 10px; color: inherit; font-weight: 600; }
.brand:hover { text-decoration: none; }

.brand-mark {
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.site-nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.9375rem; }
.site-nav a { color: var(--text-muted); }
.site-nav a:hover { color: var(--accent); }

/* --- Секции --- */

section { padding: 44px 0; }
section + section { border-top: 1px solid var(--border); }

h1 { font-size: clamp(1.75rem, 1.2rem + 2vw, 2.6rem); line-height: 1.2; margin: 0 0 16px; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; margin: 0 0 8px; letter-spacing: -0.01em; }
h3 { font-size: 1.125rem; margin: 24px 0 8px; }
p { margin: 0 0 14px; }

.lede { font-size: 1.125rem; color: var(--text-muted); max-width: 68ch; }
.section-intro { color: var(--text-muted); max-width: 72ch; margin-bottom: 24px; }

/* --- Hero --- */

.hero { padding: 56px 0 40px; }
.hero .wrap { display: grid; gap: 32px; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: start; }

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
}

.headline-metrics {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-top: 24px;
}

.metric-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.metric-card .value { font-size: 1.6rem; font-weight: 650; letter-spacing: -0.02em; display: block; }
.metric-card .label { color: var(--text-muted); font-size: 0.8125rem; }

/* --- Карточки библиотек --- */

.lib-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }

.lib-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lib-card.is-subject { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.lib-card h3 { margin: 0; font-size: 1.0625rem; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lib-card .pkg { font-family: var(--mono); font-size: 0.8125rem; color: var(--text-muted); word-break: break-all; }
.lib-card .note { font-size: 0.875rem; color: var(--text-muted); margin: 0; }

.badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--bg-sunken);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.badge.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge.good { color: var(--good); }
.badge.stream { color: var(--good); }

/* --- Переключатели --- */

.controls { display: flex; flex-wrap: wrap; gap: 20px; align-items: flex-end; margin-bottom: 22px; }
.control-group { display: flex; flex-direction: column; gap: 6px; }
.control-group > span { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }

.segmented { display: inline-flex; background: var(--bg-sunken); border: 1px solid var(--border); border-radius: 8px; padding: 3px; gap: 3px; flex-wrap: wrap; }

.segmented button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.875rem;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
}

.segmented button:hover { color: var(--text); }
.segmented button[aria-pressed="true"] { background: var(--bg-elevated); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.12); }

.dataset-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }

.dataset-tabs button {
  appearance: none;
  font: inherit;
  font-size: 0.875rem;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  cursor: pointer;
}

.dataset-tabs button:hover { color: var(--text); }
.dataset-tabs button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }

/* --- Панель набора данных --- */

.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.panel + .panel { margin-top: 18px; }
.panel-head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: baseline; margin-bottom: 4px; }
.panel-head h3 { margin: 0; font-size: 1.1875rem; }

.file-facts { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 0.8125rem; color: var(--text-muted); margin: 10px 0 20px; }
.file-facts span { white-space: nowrap; }
.file-facts b { font-weight: 600; color: var(--text); }

/* --- Бары --- */

.bars { display: grid; gap: 10px; }

.bar-row {
  display: grid;
  grid-template-columns: minmax(120px, 200px) minmax(0, 1fr) minmax(120px, auto);
  gap: 14px;
  align-items: center;
}

@media (max-width: 700px) {
  .bar-row { grid-template-columns: 1fr; gap: 4px; }
  .bar-row .bar-value { text-align: left; }
}

.bar-label { font-size: 0.9375rem; display: flex; align-items: center; gap: 7px; min-width: 0; }
.bar-label .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-row.is-subject .bar-label .name { font-weight: 650; color: var(--accent); }

.bar-track { background: var(--bg-sunken); border-radius: 5px; height: 22px; overflow: hidden; }

.bar-fill {
  height: 100%;
  width: var(--w, 0%);
  background: var(--bar);
  border-radius: 5px;
  transition: width .35s ease;
}

.bar-row.is-subject .bar-fill { background: var(--bar-subject); }
.bar-row.is-failed .bar-track { background: repeating-linear-gradient(45deg, var(--bg-sunken), var(--bg-sunken) 6px, transparent 6px, transparent 12px); }

.bar-value { text-align: right; font-variant-numeric: tabular-nums; font-size: 0.9375rem; white-space: nowrap; }
.bar-value .ratio { color: var(--text-muted); font-size: 0.8125rem; margin-left: 6px; }
.bar-value .fail { color: var(--bad); }
.bar-value .fail.skipped { color: var(--warn); }

.mode-block + .mode-block { margin-top: 26px; padding-top: 22px; border-top: 1px dashed var(--border); }
.mode-block h4 { margin: 0 0 2px; font-size: 1rem; }
.mode-block .mode-desc { margin: 0 0 14px; font-size: 0.875rem; color: var(--text-muted); max-width: 78ch; }

/* --- Таблица --- */

.table-scroll { overflow-x: auto; margin: 18px 0; }

table.data { border-collapse: collapse; width: 100%; font-size: 0.9375rem; }
table.data th, table.data td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); font-weight: 600; }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr.is-subject td { background: var(--accent-soft); }
table.data tr.is-subject td:first-child { font-weight: 650; }

/* --- Форма --- */

.upload-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 640px;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
  background: var(--bg-sunken);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.dropzone:hover, .dropzone.is-over { border-color: var(--accent); background: var(--accent-soft); }
.dropzone input[type=file] { position: absolute; width: 1px; height: 1px; opacity: 0; }
.dropzone .hint { color: var(--text-muted); font-size: 0.875rem; margin-top: 6px; }
.dropzone .picked { font-family: var(--mono); font-size: 0.875rem; margin-top: 10px; color: var(--accent); word-break: break-all; }

.btn {
  appearance: none;
  border: 0;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 8px;
  cursor: pointer;
}

.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--border); }

.form-row { display: flex; align-items: center; gap: 14px; margin-top: 18px; flex-wrap: wrap; }

.notice {
  border-left: 3px solid var(--accent);
  background: var(--bg-sunken);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 0.9375rem;
}

.notice.warn { border-left-color: var(--warn); }
.notice.bad { border-left-color: var(--bad); }

/* --- Прогресс прогона --- */

.progress-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.progress-track { height: 8px; background: var(--bg-sunken); border-radius: 999px; overflow: hidden; margin: 14px 0 10px; }
.progress-fill { height: 100%; background: var(--accent); width: 0; transition: width .4s ease; }

.spinner {
  width: 15px; height: 15px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  animation: spin .8s linear infinite;
  vertical-align: -2px;
}

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

/* --- Прочее --- */

.site-footer { border-top: 1px solid var(--border); padding: 28px 0 44px; color: var(--text-muted); font-size: 0.875rem; }

.env-list { display: grid; gap: 4px 18px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); font-size: 0.875rem; margin: 0; }
.env-list div { display: flex; gap: 8px; justify-content: space-between; border-bottom: 1px dotted var(--border); padding: 3px 0; }
.env-list dt { color: var(--text-muted); }
.env-list dd { margin: 0; font-family: var(--mono); font-size: 0.8125rem; text-align: right; }

.takeaways { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); margin: 20px 0 0; padding: 0; list-style: none; }
.takeaways li { background: var(--bg-elevated); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; padding: 12px 16px; font-size: 0.9375rem; }

/* Без JS переключатели бесполезны — вместо них показываем сразу всё. */
.no-js .dataset-tabs, .no-js .controls { display: none; }
.no-js [data-panel][hidden], .no-js [data-metric-panel][hidden] { display: block; }