:root {
  --bg: #f2f5fa;
  --panel: #ffffff;
  --ink: #1b2333;
  --muted: #6c7689;
  --line: #e1e6f0;
  --accent: #2f6fed;
  --accent-dark: #1f55c9;
  --ok: #0f7b3f;
  --ok-bg: #e8f6ee;
  --warn: #8a5a00;
  --warn-bg: #fdf3dc;
  --err: #b42318;
  --err-bg: #fdeceb;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 30, 60, .05), 0 8px 28px rgba(20, 30, 60, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  font: 13px/1.4 ui-monospace, "SF Mono", Consolas, monospace;
  background: #eef2f9;
  padding: 1px 5px;
  border-radius: 5px;
}

.wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.mono { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 13px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.ok { color: var(--ok); }
.err { color: var(--err); }
.warn { color: var(--warn); }

/* шапка */
.top { background: var(--panel); border-bottom: 1px solid var(--line); }
.top-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 650; color: var(--ink); font-size: 16px; letter-spacing: .2px; }
.brand:hover { text-decoration: none; }
.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--ink); text-decoration: none; }
.inline { display: inline; margin: 0; }
.link {
  background: none; border: 0; padding: 0; cursor: pointer;
  color: var(--muted); font: inherit; font-size: 14px;
}
.link:hover { color: var(--err); }

main.wrap { padding: 26px 0 44px; }
.foot { color: var(--muted); font-size: 12px; padding-bottom: 28px; }

/* карточки */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
  margin-bottom: 18px;
}
.card h1 { font-size: 21px; margin: 0 0 6px; }
.card h2 { font-size: 16px; margin: 0 0 12px; }
.card p { margin: 0 0 16px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); margin-bottom: 4px; }
.stat-value { font-size: 15px; font-weight: 600; }

/* кнопки */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 38px; padding: 0 16px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  font: inherit; font-size: 14px; cursor: pointer; text-decoration: none;
  transition: background .15s, border-color .15s, transform .02s;
}
.btn:hover { background: #f7f9fd; border-color: #cdd6e6; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.wide { width: 100%; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 16px; }
.toolbar {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  padding: 12px 0 14px; border-top: 1px solid var(--line); margin-top: 6px;
}
.toolbar .spacer { flex: 1; }
.check { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; color: var(--muted); cursor: pointer; }

/* загрузка */
.upload { display: grid; gap: 14px; }
.drop {
  display: grid; gap: 4px; justify-items: center;
  padding: 30px 20px; border: 1.5px dashed #c9d3e6; border-radius: var(--radius);
  background: #f8faff; cursor: pointer; text-align: center;
}
.drop:hover { border-color: var(--accent); background: #f3f7ff; }
.drop input[type=file] { max-width: 100%; margin-bottom: 6px; font-size: 14px; }
.drop-title { font-weight: 600; }
.alert { border-radius: 9px; padding: 11px 14px; font-size: 14px; margin: 12px 0 0; }
.alert.err { background: var(--err-bg); color: var(--err); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }

/* таблицы */
.table-scroll { overflow: auto; border: 1px solid var(--line); border-radius: 10px; }
.grid { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--panel); }
.grid th {
  text-align: left; font-weight: 600; font-size: 12px; text-transform: uppercase;
  letter-spacing: .5px; color: var(--muted); background: #f8fafd;
  border-bottom: 1px solid var(--line); padding: 9px 10px; position: sticky; top: 0; z-index: 1;
}
.grid td { border-bottom: 1px solid #eef2f8; padding: 8px 10px; vertical-align: middle; }
.grid tbody tr:last-child td { border-bottom: 0; }
.grid tbody tr:hover { background: #fafcff; }
.preview-grid td { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.preview-grid th { font-size: 11px; }

/* выбор столбца */
.col-list { display: grid; gap: 8px; }
.col-option {
  display: flex; align-items: baseline; gap: 12px; padding: 9px 12px;
  border: 1px solid var(--line); border-radius: 9px; cursor: pointer; background: #fbfcff;
}
.col-option:hover { border-color: #c3d1ec; }
.col-option input { margin-top: 3px; }
.col-option:has(input:checked) { border-color: var(--accent); background: #f2f7ff; }
.col-letter {
  font-family: ui-monospace, Consolas, monospace; font-weight: 700;
  background: #e9effb; color: var(--accent-dark); border-radius: 6px;
  padding: 1px 7px; min-width: 28px; text-align: center;
}
.col-meta { color: var(--muted); font-size: 13px; white-space: nowrap; }
.col-sample { color: #45506a; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.inline-form { display: flex; gap: 12px; align-items: flex-end; margin-bottom: 14px; }
.field { display: grid; gap: 6px; }
.field span { font-size: 13px; color: var(--muted); }
.field.inline { display: flex; align-items: center; gap: 8px; }
.field.inline span { font-size: 14px; }
select {
  height: 38px; border: 1px solid var(--line); border-radius: 9px; padding: 0 10px;
  font: inherit; background: var(--panel); color: var(--ink); min-width: 220px;
}

/* редактор строк */
.edit { min-width: 980px; }
.edit td { padding: 6px 6px; }
.in {
  width: 100%; border: 1px solid transparent; border-radius: 7px; padding: 6px 8px;
  font: inherit; font-size: 13.5px; background: #f8fafd; color: var(--ink);
}
.in:hover { border-color: var(--line); }
.in:focus { outline: none; border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px rgba(47, 111, 237, .12); }
.in.tiny { width: 58px; text-align: center; }
.comment { resize: vertical; min-height: 38px; line-height: 1.35; }
.src { color: var(--muted); font-size: 13px; max-width: 300px; }
.pick { width: 34px; }
.warn-cell { width: 150px; }
tr.problem { background: #fffafa; }
tr.dup { background: #fffdf5; }

/* статусы */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
  background: #eef2f9; color: var(--muted);
}
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.err { background: var(--err-bg); color: var(--err); }
.badge.busy { background: #e8f0fe; color: var(--accent-dark); }

/* прогресс */
.progress { margin: 14px 0; }
.progress-bar { height: 8px; border-radius: 999px; background: #e6ecf7; overflow: hidden; }
.progress-bar span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, #4a86ff, var(--accent));
  border-radius: 999px; transition: width .4s ease;
}
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 12px; }

/* вход */
.login-body { display: grid; place-items: center; min-height: 100vh; padding: 20px; }
.login { width: min(380px, 100%); margin: 0; display: grid; gap: 14px; }
.login h1 { margin: 0; font-size: 20px; }
.login p { margin: 0; }
.login input[type=password] {
  height: 40px; border: 1px solid var(--line); border-radius: 9px; padding: 0 12px; font: inherit;
}
.login input[type=password]:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(47, 111, 237, .12); }

@media (max-width: 720px) {
  .card { padding: 16px; }
  .top-inner { height: auto; padding: 10px 0; flex-direction: column; gap: 8px; }
  .nav { gap: 14px; }
  .src { display: none; }
}