/* calculon — базовые стили публичного сайта */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1d2433;
  --muted: #5c6577;
  --border: #d9dee7;
  --accent: #1652f0;
  --accent-hover: #0f3fc4;
  --error: #b3261e;
  --warn-bg: #fff7e0;
  --warn-border: #e6b800;
  --error-bg: #fdecea;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PT Sans", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
}

main { padding: 24px 0 48px; }

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  padding: 16px 0;
}

h1 { font-size: 26px; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 24px 0 12px; }
h3 { font-size: 17px; margin: 0 0 8px; }

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

.rate-note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin: 12px 0 20px;
  font-size: 15px;
}

/* --- Форма --- */

fieldset {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0 0 16px;
}

legend { font-weight: 600; padding: 0 6px; }

.field { max-width: 260px; }
.field label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 14px; }
.hint { color: var(--muted); font-size: 13px; margin: 4px 0 0; }

input[type="date"], input[type="text"], input[type="number"] {
  font: inherit;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  width: 100%;
}

input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }

.has-error input { border-color: var(--error); }

.field-error { color: var(--error); font-size: 13px; margin-top: 2px; }
.cell-error { color: var(--error); font-size: 13px; }

.table-wrap { overflow-x: auto; }

table {
  border-collapse: collapse;
  width: 100%;
  background: var(--surface);
}

th, td {
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
}

thead th {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.rows-table td input { min-width: 120px; }
.actions-col { width: 36px; text-align: center; }

.btn {
  font: inherit;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 9px 18px;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-link { background: none; border: none; color: var(--muted); font-size: 16px; padding: 2px 6px; }
.btn-link:hover { color: var(--error); }

.form-actions { margin-top: 8px; }

.alert { border-radius: var(--radius); padding: 12px 14px; margin: 12px 0; font-size: 15px; }
.alert ul { margin: 0; padding-left: 18px; }
.alert-error { background: var(--error-bg); border: 1px solid var(--error); color: var(--error); }
.alert-warn { background: var(--warn-bg); border: 1px solid var(--warn-border); }

/* --- Результат --- */

.result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px 20px;
  margin-top: 8px;
}

.summary {
  display: grid;
  gap: 6px;
  margin: 0 0 12px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 7px 12px;
  background: var(--bg);
  border-radius: 8px;
}

.summary-row dt { color: var(--muted); }
.summary-row dd { margin: 0; font-weight: 600; }

.summary-total {
  background: #eaf1ff;
  border: 1px solid var(--accent);
  font-size: 17px;
}
.summary-total dt { color: var(--text); }
.summary-total dd { font-weight: 700; }

.result-table { margin: 18px 0; }
.result-table .num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
.result-table tr.total td { font-weight: 700; border-top: 2px solid var(--border); }

.params-note { margin-top: 20px; color: var(--muted); font-size: 14px; }
.params-note summary { cursor: pointer; }

/* --- Результат: действия, шаринг --- */

.result-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 0 0 14px;
}

.share-box { flex: 1 1 320px; min-width: 240px; }
.share-box label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.share-row { display: flex; gap: 8px; }
.share-row input {
  flex: 1;
  font-size: 13px;
  color: var(--muted);
  background: var(--bg);
}

/* --- Печать --- */

.print-only { display: none; }

@media print {
  body { background: #fff; font-size: 12pt; }
  .site-header, .site-footer, form, .params-note, .no-print, .alert-warn { display: none !important; }
  main { padding: 0; max-width: none; }
  .container { max-width: none; padding: 0; }

  .result { border: none; padding: 0; margin: 0; }

  .print-only { display: block; }
  .print-head { border-bottom: 2px solid #000; padding-bottom: 10px; margin-bottom: 14px; }
  .print-title { font-size: 16pt; margin: 0 0 8px; }
  .print-head p { margin: 4px 0; font-size: 11pt; }

  h2 { font-size: 14pt; margin: 14px 0 8px; }

  .summary-row { background: none; border: 1px solid #999; border-radius: 0; }
  .summary-total { border: 2px solid #000; }

  table { width: 100%; }
  th, td { border: 1px solid #999; font-size: 10.5pt; padding: 5px 7px; }
  thead th { color: #000; }
  .result-table { page-break-inside: auto; }
  tr { page-break-inside: avoid; }

  .print-sign { margin-top: 28px; page-break-inside: avoid; }
  .print-sign p { margin: 10px 0; }
}

/* --- Главная страница --- */

.hero { margin: 8px 0 24px; }
.hero h1 { margin-bottom: 6px; }
.hero p { max-width: 640px; margin: 0; }

.calc-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.calc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.calc-card h2 { margin: 0; font-size: 20px; }
.calc-card h2 a { color: var(--text); text-decoration: none; }
.calc-card h2 a:hover { color: var(--accent); }
.calc-card p { margin: 0; color: var(--muted); font-size: 15px; flex: 1; }

.calc-features {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
}

.seo-note {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  color: var(--muted);
  font-size: 15px;
}
.seo-note h2 { color: var(--text); margin-top: 0; }

.error-page { text-align: center; padding: 60px 0; }

/* --- Админка --- */

.manage-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.manage-nav nav { display: flex; gap: 14px; flex-wrap: wrap; }
.manage-nav nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.manage-nav nav a:hover { color: var(--accent); }
.manage-nav .inline-form { margin-left: auto; }
.login-box { max-width: 380px; margin: 48px auto; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }

.manage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0 0 16px;
}

.manage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.alert-success { background: #e9f7ee; border: 1px solid #2e9e5b; color: #1d6b3f; }
.alert-warning { background: var(--warn-bg); border: 1px solid var(--warn-border); }
.alert-info { background: var(--bg); border: 1px solid var(--border); }

@media print { .manage-page { display: none; } }

@media (max-width: 640px) {
  .rows-table td, .rows-table th { padding: 6px; }
  .rows-table td input { min-width: 100px; }
  .summary-row { flex-direction: column; gap: 2px; }
}