/* ═══════════════════════════════════════════════════════════════
   PileCalculator styles
   ═══════════════════════════════════════════════════════════════ */

.pc-shell {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 24px;
  align-items: stretch;
}

/* ─── Левая колонка — форма ─────────────────────────────────── */
.pc-form {
  background: #fff;
  border: 1px solid var(--color-border-1);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.pc-tabs {
  display: flex;
  gap: 6px;
  background: #F5F5F4;
  padding: 5px;
  border-radius: 8px;
  margin-bottom: 24px;
}
.pc-tab {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 14px;
  font: 600 13.5px var(--font-family-sans);
  color: var(--color-fg-2);
  background: transparent;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 160ms;
}
.pc-tab.active {
  background: #fff;
  color: #0A0A0A;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.06);
}

.pc-fields {
  display: flex; flex-direction: column;
  gap: 22px;
}

.pc-field { display: flex; flex-direction: column; gap: 8px; }

.pc-label {
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-fg-3);
}

.pc-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.pc-input {
  height: 48px;
  padding: 0 16px;
  border: 1.5px solid var(--color-border-1);
  border-radius: 6px;
  font: 600 16px var(--font-family-sans);
  color: #0A0A0A;
  outline: none;
  background: #fff;
  transition: border-color 120ms;
}
.pc-input:focus { border-color: #0A0A0A; }
.pc-input::placeholder { color: var(--color-fg-3); font-weight: 400; }

.pc-hint {
  font-size: 12px;
  color: var(--color-fg-3);
  line-height: 1.45;
  margin-top: 2px;
}

.pc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pc-chip {
  padding: 9px 14px;
  border: 1.5px solid var(--color-border-1);
  border-radius: 6px;
  font: 600 13px var(--font-family-sans);
  color: var(--color-fg-1);
  background: #fff;
  cursor: pointer;
  transition: all 140ms;
  text-transform: lowercase;
}
.pc-chip:first-letter { text-transform: uppercase; }
.pc-chip:hover { border-color: #0A0A0A; }
.pc-chip.active {
  background: #0A0A0A;
  color: #fff;
  border-color: #0A0A0A;
}

.pc-divider {
  height: 1px;
  background: var(--color-border-1);
  margin: 22px 0;
}

/* ─── Coating radio cards ────────────────────────────────────── */
.pc-radio-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.pc-coat {
  position: relative;
  text-align: left;
  background: #fff;
  border: 1.5px solid var(--color-border-1);
  border-radius: 8px;
  padding: 14px 14px 14px 36px;
  font-family: inherit;
  cursor: pointer;
  transition: all 160ms;
}
.pc-coat:hover { border-color: #0A0A0A; }
.pc-coat.active {
  border-color: #E3421F;
  background: rgba(227,66,31,0.04);
}
.pc-coat-mark {
  position: absolute;
  left: 12px; top: 16px;
  width: 16px; height: 16px;
  border: 1.5px solid var(--color-border-2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #fff;
}
.pc-coat.active .pc-coat-mark {
  background: #E3421F;
  border-color: #E3421F;
  color: #fff;
}
.pc-coat-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: #0A0A0A;
}
.pc-coat.active .pc-coat-title { color: #E3421F; }
.pc-coat-desc {
  font-size: 11.5px;
  color: var(--color-fg-3);
  margin-top: 4px;
  line-height: 1.35;
}
.pc-coat-badge {
  position: absolute;
  top: 8px; right: 8px;
  background: #0A0A0A; color: #fff;
  font-size: 9px; font-weight: 900;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 3px;
}
.pc-coat.active .pc-coat-badge { background: #E3421F; }

/* ─── Toggle ─────────────────────────────────────────────────── */
.pc-toggle-row { display: flex; align-items: center; }
.pc-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  user-select: none;
}
.pc-toggle input { display: none; }
.pc-toggle-track {
  width: 46px; height: 26px;
  background: #D6D5D2;
  border-radius: 999px;
  position: relative;
  transition: background 160ms;
  flex-shrink: 0;
}
.pc-toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.pc-toggle input:checked + .pc-toggle-track { background: #E3421F; }
.pc-toggle input:checked + .pc-toggle-track .pc-toggle-thumb { transform: translateX(20px); }
.pc-toggle-label { display: flex; flex-direction: column; gap: 2px; }
.pc-toggle-label b { font-size: 14px; font-weight: 700; color: #0A0A0A; }
.pc-toggle-label small { font-size: 12px; color: var(--color-fg-3); }

/* ─── Правая колонка — результат ─────────────────────────────── */
.pc-result {
  background: #0A0A0A;
  color: #fff;
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 100px;
  align-self: flex-start;
  min-height: 480px;
}

.pc-result-empty {
  align-items: center;
  justify-content: center;
}
.pc-result-empty-msg {
  text-align: center;
  font-size: 15px;
  color: #B5B5B5;
  max-width: 280px;
  line-height: 1.5;
}

.pc-result-error {
  align-items: flex-start;
  color: #FF8866;
  font-size: 14px;
}

.pc-result-head {
  display: flex; flex-direction: column;
  gap: 8px;
  padding-bottom: 24px;
  border-bottom: 1px solid #232323;
}
.pc-result-eyebrow {
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: #E3421F;
}
.pc-result-total {
  font-size: 52px;
  font-weight: 900;
  letter-spacing: -0.022em;
  line-height: 1;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.pc-result-total-unit {
  font-size: 22px;
  color: #B5B5B5;
  font-weight: 500;
  margin-left: 4px;
}
.pc-result-summary {
  font-size: 14px;
  color: #B5B5B5;
  line-height: 1.55;
  margin-top: 4px;
}
.pc-result-summary b { color: #fff; font-weight: 700; }

.pc-result-rows {
  display: flex;
  flex-direction: column;
}
.pc-result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid #1A1A1A;
}
.pc-result-row:last-child { border-bottom: none; }
.pc-result-row-l { display: flex; flex-direction: column; gap: 2px; }
.pc-result-row-label {
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
}
.pc-result-row-sub {
  font-size: 12px;
  color: #808080;
  font-variant-numeric: tabular-nums;
}
.pc-result-row-value {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.pc-result-row-value span {
  color: #808080;
  font-weight: 500;
  margin-left: 2px;
}

.pc-result-warn {
  padding: 12px 14px;
  background: rgba(227, 66, 31, 0.10);
  border: 1px solid rgba(227, 66, 31, 0.30);
  color: #FFB8A8;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.45;
}

.pc-result-note {
  font-size: 12.5px;
  color: #808080;
  line-height: 1.55;
  padding: 14px 16px;
  background: rgba(255,255,255,0.03);
  border-left: 2px solid #E3421F;
  border-radius: 0 6px 6px 0;
}
.pc-result-note b { color: #fff; font-weight: 700; }

.pc-result-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pc-result-actions .btn { width: 100%; }