/* :root vars, .topnav, body, .app, .panel, label, input/select, .result-row, .muted all come
   from the shared /css/theme.css (linked before this file) - only calculator-specific rules
   live here now, so this page can't drift out of sync with the rest of the app again. */

header h1 {
  margin: 0 0 4px;
  font-size: 26px;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--muted);
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 20px;
}

#tab-sim .grid {
  grid-template-columns: 320px 1fr;
}

#tab-sim .results:last-child {
  grid-column: 2 / -1;
}

/* !important here is deliberate, not laziness - .hidden must always win regardless of what other
   display rules get added for whatever layout context a hidden field happens to sit in (already
   bit us once: .pnf-inputs-row label's display:flex has equal specificity to label.hidden, and
   being later in the file silently overrode the hide). Toggling visibility is exactly the kind of
   rule that should never lose a specificity fight to a layout rule. */
label.hidden {
  display: none !important;
}

.section-label {
  display: block;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.04em;
  margin-top: 14px;
  margin-bottom: 4px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.ccy {
  color: var(--accent);
}

.pnf-inputs-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 14px 20px;
}
.pnf-inputs-row label {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  flex: 1 1 160px;
  min-width: 140px;
  margin-bottom: 0;
}

.pnf-tier-row {
  display: grid;
  grid-template-columns: 140px 130px 110px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.pnf-tier-row:last-child { border-bottom: none; }
.pnf-tier-row input, .pnf-tier-row select { margin-top: 0; }
.pnf-tier-target { font-size: 15px; text-align: right; }
.pnf-tier-text { color: var(--muted); font-size: 12px; line-height: 1.5; font-family: monospace; }
.pnf-tier-copy-btn { padding: 6px 10px; font-size: 12px; }
@media (max-width: 700px) {
  .pnf-tier-row { grid-template-columns: 1fr 1fr; }
  .pnf-tier-target, .pnf-tier-text, .pnf-tier-copy-btn { grid-column: 1 / -1; }
  .pnf-tier-target { text-align: left; }
}

.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-top: 8px;
}

.scenario {
  background: var(--panel-alt);
  border-radius: 6px;
  padding: 12px 14px;
  border: 1px solid var(--border);
}

.scenario h3 {
  margin: 0 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.scenario.worst h3 { color: var(--red); }
.scenario.median h3 { color: var(--amber); }
.scenario.best h3 { color: var(--green); }

footer {
  margin-top: 30px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 900px) {
  .grid, #tab-sim .grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
}