/* Калькулятор отопления — встраиваемый блок */
@import url("https://fonts.googleapis.com/css2?family=Geologica:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap");

:root {
  --hc-bg: #14181d;
  --hc-surface: #1e252e;
  --hc-surface-2: #273039;
  --hc-border: rgba(232, 196, 152, 0.14);
  --hc-text: #f2ebe3;
  --hc-muted: #9aa3ad;
  --hc-accent: #e08a3c;
  --hc-accent-2: #f0b27a;
  --hc-ok: #6fbf8b;
  --hc-danger: #e07a6a;
  --hc-radius: 14px;
  --hc-font: "IBM Plex Sans", system-ui, sans-serif;
  --hc-display: "Geologica", "IBM Plex Sans", sans-serif;
  --hc-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--hc-font);
  color: var(--hc-text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(224, 138, 60, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(90, 120, 140, 0.12), transparent 50%),
    linear-gradient(165deg, #10141a 0%, #1a222b 45%, #12171d 100%);
}

.hc-page {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.hc-hero {
  margin-bottom: 2rem;
}

.hc-brand {
  font-family: var(--hc-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.4rem;
  background: linear-gradient(120deg, var(--hc-accent-2), var(--hc-accent) 55%, #fff6ea);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hc-lead {
  margin: 0;
  max-width: 42rem;
  color: var(--hc-muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

.hc-shell {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 960px) {
  .hc-shell {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

.hc-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%),
    var(--hc-surface);
  border: 1px solid var(--hc-border);
  border-radius: var(--hc-radius);
  box-shadow: var(--hc-shadow);
  padding: 1.25rem 1.35rem 1.5rem;
}

.hc-panel h2 {
  font-family: var(--hc-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hc-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.hc-step-pill {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--hc-muted);
  border: 1px solid var(--hc-border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}

.hc-step-pill.is-active {
  color: #1a120a;
  background: linear-gradient(120deg, var(--hc-accent-2), var(--hc-accent));
  border-color: transparent;
}

.hc-step {
  display: none;
  animation: hc-fade 0.28s ease;
}

.hc-step.is-active {
  display: block;
}

@keyframes hc-fade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.hc-grid {
  display: grid;
  gap: 0.9rem;
}

.hc-grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .hc-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.hc-field label {
  display: block;
  font-size: 0.82rem;
  color: var(--hc-muted);
  margin-bottom: 0.35rem;
}

.hc-field input,
.hc-field select,
.hc-field textarea {
  width: 100%;
  border: 1px solid var(--hc-border);
  background: var(--hc-surface-2);
  color: var(--hc-text);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font: 500 0.95rem/1.3 var(--hc-font);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.hc-field input:focus,
.hc-field select:focus {
  border-color: rgba(224, 138, 60, 0.55);
  box-shadow: 0 0 0 3px rgba(224, 138, 60, 0.15);
}

.hc-choice {
  display: grid;
  gap: 0.55rem;
}

.hc-choice-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}

@media (min-width: 480px) {
  .hc-choice-row {
    grid-template-columns: 1fr 1fr;
  }
}

.hc-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.hc-choice label.hc-opt {
  display: block;
  border: 1px solid var(--hc-border);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  background: var(--hc-surface-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}

.hc-choice label.hc-opt strong {
  display: block;
  font-family: var(--hc-display);
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.hc-choice label.hc-opt span {
  font-size: 0.8rem;
  color: var(--hc-muted);
}

.hc-choice input:checked + label.hc-opt {
  border-color: rgba(224, 138, 60, 0.7);
  background: linear-gradient(135deg, rgba(224, 138, 60, 0.16), rgba(30, 37, 46, 0.9));
  transform: translateY(-1px);
}

.hc-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.4rem;
  color: var(--hc-muted);
  font-size: 0.92rem;
}

.hc-check input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--hc-accent);
}

.hc-rooms {
  display: grid;
  gap: 0.75rem;
}

.hc-room {
  border: 1px solid var(--hc-border);
  border-radius: 12px;
  padding: 0.85rem;
  background: rgba(0, 0, 0, 0.15);
}

.hc-room-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
  gap: 0.5rem;
}

.hc-room-head strong {
  font-family: var(--hc-display);
  font-size: 0.92rem;
}

.hc-room-grid {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .hc-room-grid {
    grid-template-columns: 1.2fr 0.7fr 0.7fr auto;
    align-items: end;
  }
}

.hc-room-grid[style*="grid-template-columns"] {
  display: grid;
  gap: 0.5rem;
}

@media (max-width: 720px) {
  .hc-room-grid[style*="grid-template-columns"] {
    grid-template-columns: 1fr 1fr !important;
  }
}

.hc-btn {
  appearance: none;
  border: none;
  border-radius: 11px;
  font-family: var(--hc-font);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.1rem;
  cursor: pointer;
  transition: transform 0.12s, filter 0.12s, background 0.12s;
}

.hc-btn:active {
  transform: scale(0.98);
}

.hc-btn-primary {
  background: linear-gradient(120deg, var(--hc-accent-2), var(--hc-accent));
  color: #1a120a;
  width: 100%;
}

.hc-btn-primary:hover {
  filter: brightness(1.05);
}

.hc-btn-ghost {
  background: transparent;
  color: var(--hc-muted);
  border: 1px solid var(--hc-border);
}

.hc-btn-ghost:hover {
  color: var(--hc-text);
  border-color: rgba(232, 196, 152, 0.35);
}

.hc-btn-danger {
  background: transparent;
  color: var(--hc-danger);
  border: 1px solid rgba(224, 122, 106, 0.35);
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
}

.hc-nav {
  display: flex;
  gap: 0.65rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.hc-nav .hc-btn {
  flex: 1;
  min-width: 120px;
}

.hc-hint {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--hc-muted);
  line-height: 1.45;
}

.hc-summary-sticky {
  position: sticky;
  top: 1rem;
}

.hc-kpi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.hc-kpi-item {
  background: var(--hc-surface-2);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--hc-border);
}

.hc-kpi-item span {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--hc-muted);
  margin-bottom: 0.25rem;
}

.hc-kpi-item strong {
  font-family: var(--hc-display);
  font-size: 1.15rem;
  font-weight: 600;
}

.hc-kpi-item.hc-kpi-total {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(224, 138, 60, 0.22), rgba(39, 48, 57, 0.95));
}

.hc-kpi-item.hc-kpi-total strong {
  font-size: 1.55rem;
  color: var(--hc-accent-2);
}

.hc-empty {
  color: var(--hc-muted);
  font-size: 0.92rem;
  line-height: 1.5;
  margin: 0;
}

.hc-results {
  display: none;
  margin-top: 1.5rem;
}

.hc-results.is-visible {
  display: block;
  animation: hc-fade 0.35s ease;
}

.hc-section-title {
  font-family: var(--hc-display);
  font-size: 1.05rem;
  margin: 1.4rem 0 0.7rem;
}

.hc-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hc-border);
  border-radius: 12px;
}

table.hc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  min-width: 520px;
}

.hc-table th,
.hc-table td {
  padding: 0.65rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--hc-border);
}

.hc-table th {
  color: var(--hc-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: rgba(0, 0, 0, 0.2);
}

.hc-table tr:last-child td {
  border-bottom: none;
}

.hc-table td.num,
.hc-table th.num {
  text-align: right;
  white-space: nowrap;
}

.hc-table tfoot td {
  font-weight: 600;
  background: rgba(224, 138, 60, 0.08);
}

.hc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.5rem 0 0;
}

.hc-chip {
  font-size: 0.78rem;
  color: var(--hc-text);
  background: var(--hc-surface-2);
  border: 1px solid var(--hc-border);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
}

.hc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.hc-note {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--hc-accent);
  background: rgba(224, 138, 60, 0.08);
  border-radius: 0 10px 10px 0;
  color: var(--hc-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.hc-footer-note {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--hc-muted);
  font-size: 0.78rem;
}

@media print {
  body {
    background: #fff;
    color: #111;
  }
  .hc-nav,
  .hc-steps,
  .hc-actions,
  .hc-btn,
  #hc-form-panel {
    display: none !important;
  }
  .hc-panel {
    box-shadow: none;
    border: 1px solid #ccc;
    background: #fff;
  }
  .hc-results {
    display: block !important;
  }
}