/* Travel Points Stretch Calculator */
:root {
  --bg: #faf6ef;
  --surface: #ffffff;
  --surface-2: #f4ede0;
  --ink: #1c1a17;
  --ink-soft: #5a554b;
  --ink-muted: #8a8377;
  --line: #e4dccb;
  --line-strong: #cfc4ad;
  --accent: #b8541a;
  --accent-soft: #f3d9c4;
  --accent-ink: #7a3408;
  --positive: #2d6a4f;
  --positive-soft: #d6ece0;
  --neutral: #9a6a1b;
  --neutral-soft: #f1e3c4;
  --negative: #a4342a;
  --negative-soft: #f3d2cd;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(28, 26, 23, 0.06), 0 2px 8px rgba(28, 26, 23, 0.04);
  --shadow-md: 0 4px 16px rgba(28, 26, 23, 0.08);
  --max: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-ink); }
a:hover { color: var(--accent); }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent-soft);
  padding: 4px;
}
.site-nav {
  display: flex;
  gap: 22px;
  font-size: 0.95rem;
}
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent); }

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 56px 0 32px;
}
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  line-height: 1.12;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.lede {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 0 0 22px;
  max-width: 56ch;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.last-updated {
  font-size: 0.82rem;
  color: var(--ink-muted);
  margin: 0;
}
.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.hero-card-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 12px;
}
.hero-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
  margin: 0 0 14px;
}
.hero-card-grid dt {
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin: 0;
}
.hero-card-grid dd {
  margin: 2px 0 0;
  font-weight: 600;
  font-size: 1.05rem;
  font-family: var(--mono);
}
.hero-card-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--positive);
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.05s;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #9a4512; color: #fff; }
.btn-secondary {
  background: var(--surface-2);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-secondary:hover { background: var(--line); }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--ink); }
.btn-danger-ghost {
  background: transparent;
  color: var(--negative);
  border-color: var(--negative-soft);
}
.btn-danger-ghost:hover { background: var(--negative-soft); }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

/* Calculator */
.calculator {
  padding: 32px 0;
}
.section-lede {
  color: var(--ink-soft);
  margin: 0 0 24px;
  max-width: 60ch;
}
.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 28px;
  align-items: start;
}
.calc-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.calc-form h2 {
  margin: 0 0 4px;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}
.field-group {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 18px 6px;
  margin: 0 0 18px;
  background: var(--surface-2);
}
.field-group legend {
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0 8px;
}
.field-row {
  margin-bottom: 14px;
}
.field-row label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 6px;
}
.field-row input,
.field-row select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--ink);
}
.field-row input:focus,
.field-row select:focus {
  outline: 2px solid var(--accent-soft);
  outline-offset: 1px;
  border-color: var(--accent);
}
.field-hint {
  margin: 6px 0 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}
.input-affix {
  display: flex;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}
.input-affix:focus-within {
  border-color: var(--accent);
  outline: 2px solid var(--accent-soft);
  outline-offset: 1px;
}
.input-affix .affix {
  padding: 0 10px;
  color: var(--ink-muted);
  font-weight: 600;
  font-family: var(--mono);
  background: var(--surface-2);
  height: 100%;
  display: flex;
  align-items: center;
}
.input-affix input {
  border: none;
  outline: none;
  flex: 1;
  background: transparent;
}
.input-affix .affix-end {
  border-left: 1px solid var(--line);
}

.presets {
  margin: 8px 0 18px;
}
.presets-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.preset {
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--ink-soft);
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.preset:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

/* Results rail */
.calc-results {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 84px;
}
.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}
.result-head h3 {
  margin: 0;
  font-size: 1.1rem;
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.badge-strong { background: var(--positive-soft); color: var(--positive); }
.badge-ok { background: var(--neutral-soft); color: var(--neutral); }
.badge-weak { background: var(--negative-soft); color: var(--negative); }
.result-metric {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 18px;
  text-align: center;
  margin-bottom: 16px;
}
.metric-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin-bottom: 4px;
}
.metric-value {
  font-size: 2.4rem;
  font-weight: 700;
  font-family: var(--mono);
  letter-spacing: -0.02em;
}
.positive { color: var(--positive); }
.neutral { color: var(--neutral); }
.negative { color: var(--negative); }
.result-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-bottom: 18px;
}
.result-secondary > div {
  display: flex;
  flex-direction: column;
}
.sec-label {
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.sec-value {
  font-weight: 600;
  font-family: var(--mono);
  font-size: 1rem;
}
.result-bar {
  position: relative;
  margin-bottom: 14px;
}
.bar-track {
  display: flex;
  height: 28px;
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.7rem;
  font-weight: 600;
  color: #fff;
}
.bar-zone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}
.zone-weak { background: var(--negative); }
.zone-ok { background: var(--neutral); }
.zone-strong { background: var(--positive); }
.bar-marker {
  position: absolute;
  top: -4px;
  width: 3px;
  height: 36px;
  background: var(--ink);
  border-radius: 2px;
  transform: translateX(-1.5px);
  transition: left 0.25s ease;
}
.verdict-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 16px;
  line-height: 1.55;
}
.alternate {
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.alternate h4 {
  margin: 0 0 6px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.alternate p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* Scenarios */
.scenarios { padding: 40px 0; }
.scenarios h2, .reference h2, .history h2, .assumptions h2 {
  font-size: 1.6rem;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.scenario {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.scenario h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}
.scenario dl {
  margin: 0 0 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
}
.scenario dt {
  font-size: 0.78rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.scenario dd {
  margin: 0;
  font-weight: 600;
  font-family: var(--mono);
  font-size: 0.95rem;
}
.scenario p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* Reference */
.reference { padding: 40px 0; }
.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.ref-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.ref-card h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}
.ref-card p, .ref-card li {
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.ref-card ul {
  margin: 0;
  padding-left: 18px;
}
.ref-card li { margin-bottom: 6px; }
.benchmark {
  list-style: none;
  padding: 0;
  margin: 0;
}
.benchmark li {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 0.92rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.benchmark li:last-child { margin-bottom: 0; }
.bm-range {
  font-weight: 700;
  font-family: var(--mono);
  font-size: 0.95rem;
}
.bm-weak { background: var(--negative-soft); }
.bm-ok { background: var(--neutral-soft); }
.bm-strong { background: var(--positive-soft); }
.bm-excellent { background: #cde4d6; color: var(--positive); }

/* History */
.history { padding: 40px 0; }
.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.history-list {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}
.history-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
}
.history-item .hi-name {
  font-weight: 600;
  font-size: 0.95rem;
}
.history-item .hi-meta {
  font-size: 0.82rem;
  color: var(--ink-muted);
}
.history-item .hi-cpp {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
}
.history-item .hi-actions {
  display: flex;
  gap: 6px;
}
.history-item .hi-actions button {
  padding: 4px 10px;
  font-size: 0.78rem;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  cursor: pointer;
  font-family: inherit;
  color: var(--ink-soft);
}
.history-item .hi-actions button:hover {
  background: var(--line);
}
.empty-state {
  background: var(--surface-2);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* Assumptions */
.assumptions {
  padding: 32px 0 48px;
}
.assumptions ul {
  margin: 12px 0 0;
  padding-left: 20px;
}
.assumptions li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

/* Footer */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding: 28px 0;
  margin-top: 20px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
}
.footer-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}
.footer-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--accent); }
.footer-note {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
  width: 100%;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

/* Responsive */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 36px 0 16px; }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-results { position: static; }
}
@media (max-width: 640px) {
  .header-inner { height: auto; padding: 12px 0; flex-wrap: wrap; }
  .site-nav { gap: 14px; font-size: 0.88rem; flex-wrap: wrap; }
  .hero h1 { font-size: 1.7rem; }
  .calc-form, .calc-results { padding: 18px; }
  .result-metric { padding: 14px; }
  .metric-value { font-size: 2rem; }
  .result-secondary { grid-template-columns: 1fr; }
  .history-item { grid-template-columns: 1fr; gap: 8px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media print {
  .site-header, .site-footer, .form-actions, .presets, .hero-actions, .last-updated, .history, .assumptions { display: none; }
  body { background: #fff; }
  .calc-results { box-shadow: none; border: 1px solid #ccc; position: static; }
  .calc-form { box-shadow: none; border: 1px solid #ccc; }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}