/* Палитра «Кавказский вечер»:
   Бордовая ночь, золото-бронза акцент, изумруд success, терракота ошибка,
   слоновая кость для текста. */
:root {
  --bg: #fbf7ed;            /* пергамент / слоновая кость */
  --bg-elev: #ffffff;
  --fg: #1a0e12;            /* тёмный бордо для текста */
  --fg-muted: #6b5547;      /* приглушённый бурый */
  --line: #e8dcc6;          /* песочный */
  --accent: #8a1538;        /* бордо */
  --accent-fg: #fbf7ed;
  --gold: #b08842;          /* старая бронза */
  --emerald: #1e6657;       /* изумруд */
  --good: #1e6657;
  --warn: #b08842;
  --err: #b8341c;           /* терракота */
  --radius: 14px;
  --pad: 16px;
  --tap: 52px;
  --serif: "Cormorant Garamond", "Times New Roman", Georgia, serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14080c;            /* бордовая ночь */
    --bg-elev: #1d1014;       /* приподнятый бордо */
    --fg: #f5efe2;            /* слоновая кость */
    --fg-muted: #b8a890;      /* пыльное золото */
    --line: #2c1820;          /* глубокий тёмный бордо */
    --accent: #c9a961;        /* золотая бронза */
    --accent-fg: #14080c;
    --gold: #c9a961;
    --emerald: #3d8b6e;
    --good: #3d8b6e;
    --warn: #d4a544;
    --err: #d1492a;           /* тёплая терракота */
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  padding-bottom: env(safe-area-inset-bottom);
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  padding-top: calc(12px + env(safe-area-inset-top));
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex; align-items: center; gap: 12px; font-weight: 700;
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.04em;
}
.dot {
  width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent-fg);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--gold) 40%, transparent),
              0 4px 12px color-mix(in srgb, var(--accent) 30%, transparent);
}
.badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--good) 20%, transparent);
  color: var(--good);
  border: 1px solid color-mix(in srgb, var(--good) 40%, transparent);
}
.badge.online {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

#app { max-width: 720px; margin: 0 auto; padding: var(--pad); }

.screen { display: none; }
.screen.active { display: block; }

h1 {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 12px 0 4px;
  line-height: 1.1;
}
h2 { font-size: 18px; margin: 24px 0 8px; }
.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-muted); margin: 20px 0 8px; font-weight: 600; }
.section-title:first-of-type { margin-top: 12px; }
.hint { color: var(--fg-muted); margin: 0 0 16px; font-size: 14px; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (min-width: 540px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}

.tile {
  display: block;
  text-align: left;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--fg);
  cursor: pointer;
  min-height: 104px;
  transition: transform 0.08s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}
.tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 6%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.tile:active { transform: scale(0.98); }
.tile:hover { border-color: var(--gold); box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 12%, transparent); }
.tile:hover::before { opacity: 1; }
.tile-title { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }
.tile-sub { color: var(--fg-muted); font-size: 13px; margin-top: 6px; }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 0;
  color: var(--accent);
  font-size: 16px;
  padding: 4px 0;
  margin-bottom: 8px;
  cursor: pointer;
}

label.field {
  display: block;
  margin: 12px 0;
}
label.field > span {
  display: block;
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 6px;
}
input[type="text"], input[type="number"], textarea, select {
  width: 100%;
  padding: 14px;
  font-size: 17px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-elev);
  color: var(--fg);
  min-height: var(--tap);
  font-family: inherit;
}
textarea { min-height: 100px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.row { display: flex; gap: 8px; align-items: end; }
.row > * { flex: 1; }

.btn {
  min-height: var(--tap);
  padding: 12px 18px;
  border-radius: 10px;
  border: 0;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--gold)));
  color: var(--accent-fg);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--accent) 30%, transparent);
  transition: box-shadow 0.15s ease, transform 0.06s ease;
}
.btn:hover { box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 40%, transparent); }
.btn:active { transform: scale(0.98); }
.btn.secondary {
  background: var(--bg-elev);
  color: var(--fg);
  border: 1px solid var(--line);
}
.btn.danger { background: var(--err); color: white; }
.btn-row { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin: 12px 0;
}

.result {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-elev));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
}
.result h3 { margin: 0 0 10px; font-size: 15px; color: var(--fg-muted); font-weight: 500; }
.result .big { font-size: 26px; font-weight: 700; }
.result .small { font-size: 14px; color: var(--fg-muted); margin-top: 4px; }
.result .row-out { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.result .row-out:last-child { border-bottom: 0; }
.result .row-out span:first-child { color: var(--fg-muted); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 6px; text-align: left; border-bottom: 1px solid var(--line); }
th { font-weight: 600; color: var(--fg-muted); font-size: 12px; text-transform: uppercase; }
td input, td select { padding: 8px; font-size: 14px; min-height: 40px; }
.table-wrap { overflow-x: auto; margin: 8px -4px; padding: 0 4px; }

.foot {
  margin-top: 32px;
  padding: 12px 0;
  text-align: center;
  color: var(--fg-muted);
  font-size: 12px;
}

.formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  margin: 8px 0;
  overflow-x: auto;
}

.warn-box {
  background: color-mix(in srgb, var(--warn) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  margin: 10px 0;
  color: var(--fg);
}

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  color: var(--fg-muted);
  margin: 2px 4px 2px 0;
}

.gost-card { margin: 8px 0; }
.gost-card:hover { border-color: var(--accent); }

/* Шпаргалка */
.cs-toolbar { position: sticky; top: 60px; z-index: 5; }
.cs-toc-card summary { padding: 4px 0; }
.cs-toc {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 10px;
  max-height: 50vh;
  overflow-y: auto;
}
.toc-item {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  border-left: 3px solid transparent;
}
.toc-item:hover { background: color-mix(in srgb, var(--accent) 10%, transparent); border-left-color: var(--accent); color: var(--accent); }

.cs-content { margin-top: 12px; }
.cs-section {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 12px;
}
.cs-section h2 {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 12px;
  color: var(--accent);
  border-bottom: 1px solid color-mix(in srgb, var(--gold) 30%, transparent);
  padding-bottom: 8px;
}
.cs-section h3 { font-size: 16px; margin: 16px 0 6px; color: var(--gold); }
.cs-section h4 { font-size: 14px; margin: 12px 0 4px; color: var(--fg-muted); }
.cs-section p { margin: 8px 0; line-height: 1.6; }
.cs-section ul, .cs-section ol { padding-left: 22px; line-height: 1.6; }
.cs-section li { margin: 4px 0; }
.cs-section strong { color: var(--fg); font-weight: 700; }
.cs-section code {
  font-family: ui-monospace, monospace;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.cs-section pre {
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  padding: 12px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13px;
  border: 1px solid var(--line);
}
.cs-section pre code { background: transparent; padding: 0; }
.cs-section blockquote {
  margin: 12px 0;
  padding: 8px 14px;
  border-left: 3px solid var(--gold);
  background: color-mix(in srgb, var(--gold) 6%, transparent);
  color: var(--fg-muted);
  font-style: italic;
}
.cs-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}
.cs-section th, .cs-section td {
  padding: 8px 10px;
  border: 1px solid var(--line);
  text-align: left;
}
.cs-section th {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-weight: 700;
  color: var(--fg);
  text-transform: none;
  font-size: 13px;
}
.cs-section hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }

/* Статусы для МПИ */
.status-ok    { color: var(--good); }
.status-warn  { color: var(--warn); }
.status-err   { color: var(--err); }
.status-pill  {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 999px;
  font-weight: 600;
}
.status-pill.ok   { background: color-mix(in srgb, var(--good) 15%, transparent); color: var(--good); }
.status-pill.warn { background: color-mix(in srgb, var(--warn) 15%, transparent); color: var(--warn); }
.status-pill.err  { background: color-mix(in srgb, var(--err) 15%, transparent); color: var(--err); }