/* ============================================================
   Runway - calculator-specific styles
   Depends on shared.css for theme tokens and base components
   ============================================================ */

.calc-shell.calc-shell--wide { max-width: 760px; }

/* ---------- Steps (reuse calc's chip pattern) ---------- */
.step { margin-bottom: 22px; }
.step:last-of-type { margin-bottom: 0; }

.step__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.step__options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

/* Frequency grid gets its own breakpoints (8 chips) */
.freq-options { grid-template-columns: repeat(4, 1fr); }

.step__option {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px 8px;
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
  user-select: none;
  min-height: 44px;
}
.step__option:hover { border-color: var(--accent); color: var(--accent); }
.step__option.selected { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.step__option:focus-visible { outline: none; box-shadow: var(--focus-ring); border-color: var(--accent); }

.step__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

/* Dose unit toggle (mcg / mg) */
.unit-toggle {
  display: inline-flex;
  background: var(--bg-subtle);
  border-radius: 6px;
  padding: 2px;
  border: 1px solid var(--border);
}
.unit-toggle.hidden { display: none; }
.unit-toggle button {
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.unit-toggle button[aria-pressed="true"] {
  background: var(--bg-elevated);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}
.unit-toggle button:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* ---------- Stockpile field groups ---------- */
.stock-group.hidden { display: none; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.grid-2 .field, .grid-3 .field { margin-bottom: 0; }

/* Repeatable "add another size" rows (peptide / oil / oral / other) */
.size-row {
  display: grid;
  gap: 12px;
  align-items: end;
  margin-bottom: 10px;
}
.size-row:last-child { margin-bottom: 0; }
.size-row .field { margin-bottom: 0; }
/* Only the first row keeps its labels; later rows are just inputs */
.size-row:not(:first-child) .field label { display: none; }

/* Column layouts by field count, with a trailing column for the remove button */
.size-rows[data-cols="1"] .size-row { grid-template-columns: 1fr auto; }
.size-rows[data-cols="2"] .size-row { grid-template-columns: 1fr 1fr auto; }
.size-rows[data-cols="3"] .size-row { grid-template-columns: 1fr 1fr 1fr auto; }
/* When there's only one row, drop the remove column entirely */
.size-rows:not(.has-multiple)[data-cols="1"] .size-row { grid-template-columns: 1fr; }
.size-rows:not(.has-multiple)[data-cols="2"] .size-row { grid-template-columns: 1fr 1fr; }
.size-rows:not(.has-multiple)[data-cols="3"] .size-row { grid-template-columns: 1fr 1fr 1fr; }
.size-rows:not(.has-multiple) .size-remove { display: none; }

.size-remove {
  width: 40px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.size-remove:hover { border-color: var(--danger); color: var(--danger); }
.size-remove:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.add-row-btn {
  margin-top: 10px;
  width: 100%;
  padding: 9px 12px;
  background: transparent;
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.add-row-btn:hover { border-color: var(--accent); color: var(--accent); }
.add-row-btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.field .opt { color: var(--text-faint); font-weight: 400; }

.stock-total {
  margin: 12px 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.stock-total strong {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  color: var(--text);
  font-weight: 600;
}

/* Custom frequency row */
.custom-freq-row { display: flex; gap: 8px; }
.custom-freq-row input[type="number"] {
  flex: 0 0 90px;
  padding: 10px 12px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--accent);
  border-radius: 8px;
  -moz-appearance: textfield;
}
.custom-freq-row input::-webkit-outer-spin-button,
.custom-freq-row input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.custom-freq-row select {
  flex: 1;
  padding: 0 12px;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  cursor: pointer;
}
.custom-freq-row input:focus, .custom-freq-row select:focus {
  outline: none; box-shadow: var(--focus-ring); border-color: var(--accent);
}

/* ---------- Result panel ---------- */
.calc-result {
  margin-top: 28px;
  padding: 22px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
}

.runway-name {
  margin: 0 0 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.runway-name.hidden { display: none; }

.runway-headline { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.runway-headline__big {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 2.6rem;
  font-weight: 600;
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.02em;
}
.runway-headline__unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.runway-sub {
  margin: 8px 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

.calc-result__warning {
  display: none;
  margin: 12px 0 0;
  padding: 10px 12px;
  background: var(--danger-soft);
  border-left: 3px solid var(--danger);
  border-radius: 6px;
  color: var(--danger);
  font-size: 0.85rem;
  font-weight: 500;
}
.calc-result__warning.visible { display: block; }

.runway-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.runway-stat { display: flex; flex-direction: column; gap: 4px; }
.runway-stat__label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.runway-stat__val {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

/* ---------- Export actions ---------- */
.export-actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.export-actions .btn { flex: 1 1 auto; min-width: 150px; }
.export-actions .btn svg {
  width: 16px; height: 16px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

.export-note {
  margin: 10px 0 0;
  font-size: 0.82rem;
  min-height: 1.1em;
  font-weight: 500;
}
.export-note.is-ok { color: var(--success); }
.export-note.is-error { color: var(--danger); }

/* ---------- Comparison card ---------- */
.compare-card { margin-top: 24px; padding: 24px; }
.compare-card h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}
.compare-sub {
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.compare-table th, .compare-table td {
  text-align: left;
  padding: 10px 12px;
  white-space: nowrap;
}
.compare-table thead th {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.compare-table tbody tr { border-bottom: 1px solid var(--border); }
.compare-table tbody tr:last-child { border-bottom: none; }
.compare-table td strong {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  color: var(--text);
}
.compare-table tr.is-current {
  background: var(--accent-soft);
}
.compare-table tr.is-current td:first-child {
  box-shadow: inset 3px 0 0 var(--accent);
  font-weight: 600;
  color: var(--accent);
}
.you-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 6px;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-text);
  background: var(--accent);
  border-radius: 999px;
  vertical-align: middle;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .calc-shell.calc-shell--wide { padding: 0 16px; margin-top: 80px; }
  .freq-options { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .runway-headline__big { font-size: 2.1rem; }
  .runway-stats { grid-template-columns: 1fr; gap: 10px; }
  .runway-stat { flex-direction: row; justify-content: space-between; align-items: baseline; }
  .export-actions .btn { flex: 1 1 100%; }
  .compare-card { padding: 18px; }
}

@media (max-width: 400px) {
  .step__options { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   Below-tool reference section (on-page SEO)
   ============================================================ */
.section-divider {
  max-width: 760px;
  margin: 56px auto 0;
  border: 0;
  border-top: 1px solid var(--border);
}
.reference {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 22px 8px;
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}
.reference h2 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.reference h3 { margin: 24px 0 6px; font-size: 1rem; font-weight: 600; color: var(--text); }
.reference p { margin: 0 0 12px; }
.reference strong { color: var(--text); font-weight: 600; }
.reference code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.85em;
  background: var(--bg-subtle);
  padding: 1px 5px;
  border-radius: 4px;
}
.reference a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}
.reference a:hover { border-bottom-color: var(--accent); }
.reference .ref-formula {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  line-height: 1.7;
}
.reference .ref-disclaimer {
  font-size: 0.85rem;
  border-left: 3px solid var(--border-strong);
  padding-left: 14px;
}
.reference .related-tools { list-style: none; padding: 0; margin: 0 0 12px; }
.reference .related-tools li { margin: 0 0 8px; }

.footer-disclaimer {
  max-width: 760px;
  margin: 0 auto 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .reference { padding: 28px 16px 8px; }
  .section-divider { margin-top: 40px; }
}