/* How Long Will My Savings Last? — page-specific presentation.

   Shared shell, panels, hero (.rp-hero), stat tiles (.rp-tiles), chips, FAQ, related cards and
   Cozy's pick come from styles.css and results.css. This file adds the savings form, monthly gap,
   stacked cash-flow bar, runway chart, scenario comparison, goal solver and calculation prose. */

.runway-page .optional { font-weight: 400; color: var(--muted); }

.runway-page .field-error {
  margin: 4px 0 0;
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--danger);
}
.runway-page .field-error:empty { display: none; }
.runway-page input[aria-invalid="true"],
.runway-page select[aria-invalid="true"] {
  border-color: var(--danger);
}

.runway-page .hint {
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
  margin: 8px 0 0;
}
.runway-page .field .hint { font-size: 0.8rem; margin-top: 4px; }

.runway-page .mode-chips { margin: 0 0 10px; }
.runway-page .mode-chips .chip { min-height: 44px; }
.runway-page .preset-row .chip { min-height: 36px; }

.runway-page .runway-gap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 2px 12px;
  margin: 16px 0 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--accent);
}
.runway-page .runway-gap-label { font-size: 0.8rem; color: var(--muted); }
.runway-page .runway-gap strong { font-size: 1.15rem; overflow-wrap: anywhere; }
.runway-page .runway-gap .hint { grid-column: 1 / -1; margin: 2px 0 0; }

.runway-page .advanced {
  margin: 18px 0;
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 0 14px;
  background: var(--input-bg);
}
.runway-page .advanced summary {
  padding: 12px 0;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.runway-page .advanced .field { margin: 4px 0 12px; }
.runway-page .advanced[open] summary { border-bottom: 1px solid var(--border); margin-bottom: 10px; }

.runway-page .slider-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-weight: 600;
  margin: 16px 0 6px;
}
.runway-page .slider-label output {
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.runway-page input[type="range"] {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  margin: 0;
  accent-color: var(--primary);
}
.runway-page input[type="range"]:focus-visible {
  outline: 2px solid var(--highlight);
  outline-offset: 3px;
  border-radius: 5px;
}
.runway-page .privacy-note { margin: 12px 0 0; }

/* ---------------------------------------------------------------- Results */

.runway-page .result-block { margin: 26px 0 0; }
.runway-page .result-block .rp-heading { margin-top: 0; }
.runway-page .runway-reserve-note {
  margin: 10px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  font-size: 0.82rem;
  line-height: 1.55;
}
.runway-page .runway-reserve-note.hidden { display: none; }

.runway-page .runway-tiles { gap: 10px; margin-top: 4px; }
.runway-page .runway-tiles .value { font-size: clamp(1rem, 2.2vw, 1.25rem); overflow-wrap: anywhere; }

/* ---------------------------------------------------------------- Cash-flow split */

.runway-page .runway-stack-bar {
  display: flex;
  width: 100%;
  height: 22px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--border);
}
.runway-page .runway-stack-income { display: block; height: 100%; background: var(--primary); }
.runway-page .runway-stack-savings { display: block; height: 100%; background: var(--highlight); }
.runway-page .runway-stack-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}
.runway-page .runway-stack-legend span { display: inline-flex; align-items: center; gap: 6px; }
.runway-page .runway-key {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--primary);
}
.runway-page .runway-key.is-savings { background: var(--highlight); }
.runway-page .runway-surplus {
  margin: 10px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  font-size: 0.84rem;
  color: var(--text);
}
.runway-page .runway-surplus.hidden { display: none; }

/* ---------------------------------------------------------------- Chart */

.runway-page .runway-chart-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin: 6px 0 8px;
}
.runway-page .runway-chart-controls .chips { margin: 0; }
.runway-page .runway-chart-card {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}
.runway-page .runway-chart { width: 100%; min-height: 160px; }
.runway-page .runway-chart svg { display: block; width: 100%; height: auto; }
.runway-page .runway-grid { stroke: var(--border); stroke-width: 1; }
.runway-page .runway-axis { fill: var(--muted); font-size: 16px; }
.runway-page .runway-axis-title { fill: var(--muted); font-size: 14px; font-weight: 600; }
.runway-page .runway-area { fill: var(--accent); }
.runway-page .runway-line { fill: none; stroke: var(--primary); stroke-width: 2.4; }
.runway-page .runway-zero { stroke: var(--highlight); stroke-width: 1.6; stroke-dasharray: 4 3; }
.runway-page .runway-start { fill: var(--highlight); stroke: var(--card); stroke-width: 2; }
.runway-page .runway-point { fill: var(--primary); opacity: 0.55; }
.runway-page .runway-point.is-selected { fill: var(--highlight); opacity: 1; }
.runway-page .runway-selected-line {
  stroke: var(--highlight);
  stroke-width: 1.4;
  stroke-dasharray: 2 3;
}

.runway-page .runway-scrub {
  margin: 10px 0 12px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--accent);
}
.runway-page .runway-scrub-label {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
}
.runway-page .runway-scrub-label output { color: var(--primary); font-weight: 700; }
.runway-page .runway-scrub-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 16px;
  margin-top: 8px;
  font-size: 0.84rem;
  color: var(--muted);
}
.runway-page .runway-scrub-card b { color: var(--text); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.runway-page .runway-scrub-title {
  grid-column: 1 / -1;
  color: var(--text);
  font-weight: 700;
  font-size: 0.92rem;
}
.runway-page .runway-status {
  justify-self: start;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--ok-bg);
  color: var(--ok-text);
  font-size: 0.72rem;
  font-weight: 600;
}
.runway-page .runway-status.is-partial { background: var(--danger-bg); color: var(--danger); }

.runway-page .runway-table-details { margin-top: 10px; }
.runway-page .runway-table-wrap { overflow-x: auto; margin-top: 8px; }
.runway-page .runway-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}
.runway-page .runway-table th,
.runway-page .runway-table td {
  padding: 6px 7px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
}
.runway-page .runway-table th:first-child,
.runway-page .runway-table td:first-child { text-align: left; }
.runway-page .runway-table thead th {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.runway-page .runway-table tbody tr.is-partial { background: var(--danger-bg); color: var(--danger); }

/* ---------------------------------------------------------------- Scenarios */

.runway-page .runway-scenario-sliders {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 16px;
}
.runway-page .runway-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 0;
}
.runway-page .runway-scenario-card {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
}
.runway-page .runway-scenario-card.is-spend { border-color: var(--highlight); }
.runway-page .runway-scenario-card.is-income { background: var(--accent); }
.runway-page .runway-scenario-card .label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.runway-page .runway-scenario-card strong { font-size: 1.05rem; overflow-wrap: anywhere; }
.runway-page .runway-scenario-card .hint { margin: 0; font-size: 0.72rem; }
.runway-page .runway-scenario-track {
  height: 9px;
  margin-top: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
.runway-page .runway-scenario-track span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--primary);
}
.runway-page .runway-scenario-card.is-spend .runway-scenario-track span { background: var(--highlight); }
.runway-page .runway-scenario-card.is-income .runway-scenario-track span { background: var(--primary); }
.runway-page #scenario-reset { margin-top: 12px; }

/* ---------------------------------------------------------------- Solver */

.runway-page .runway-solver-custom { max-width: 420px; }
.runway-page .runway-solver-chips .chip { min-height: 36px; }
.runway-page .runway-solver-answer {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 12px 0 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--accent);
}
.runway-page .runway-solver-answer .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.runway-page .runway-solver-answer strong { font-size: 1.25rem; overflow-wrap: anywhere; }
.runway-page .runway-solver-answer .hint { margin: 0; }
.runway-page .runway-caveat {
  margin: 26px 0 0;
  padding: 14px;
  border-left: 3px solid var(--highlight);
  border-radius: 0 8px 8px 0;
  background: var(--input-bg);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------------------------------------------------------------- Article */

.runway-page .calc-info .fact-list { display: grid; gap: 12px; margin-top: 12px; }
.runway-page .calc-info .fact {
  background: var(--accent);
  border-radius: 12px;
  padding: 14px 16px;
}
.runway-page .calc-info .fact h3 { font-size: 0.95rem; margin: 0 0 6px; }
.runway-page .calc-info .fact p { font-size: 0.88rem; line-height: 1.6; margin: 0; }
.runway-page .formula {
  padding: 10px 12px;
  border-left: 3px solid var(--highlight);
  border-radius: 0 8px 8px 0;
  background: var(--accent);
  font-weight: 600;
}
.runway-page .runway-code {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.55;
  overflow-x: auto;
}
.runway-page .runway-sources { padding-left: 20px; }
.runway-page .runway-sources li { margin-bottom: 8px; }
.runway-page .runway-sources a { color: var(--primary); }

/* ---------------------------------------------------------------- Small screens */

@media (max-width: 900px) {
  .runway-page .runway-scenario-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .runway-page .runway-scenario-sliders { grid-template-columns: minmax(0, 1fr); }
  .runway-page .runway-scrub-card { grid-template-columns: minmax(0, 1fr); }
  .runway-page .runway-chart-controls { flex-direction: column; }
  .runway-page .runway-chart-controls .chips { width: 100%; }
  .runway-page .runway-chart-controls .chip { flex: 1 1 auto; justify-content: center; }
  .runway-page .runway-table { min-width: 580px; }
}

@media (max-width: 430px) {
  .runway-page .runway-gap { grid-template-columns: minmax(0, 1fr); }
  .runway-page .runway-gap strong { white-space: normal; }
  .runway-page .runway-chart-card { padding: 6px; }
  .runway-page .runway-table { min-width: 520px; }
}

@media (prefers-reduced-motion: reduce) {
  .runway-page .runway-scenario-track span { transition: none; }
}