:root {
  --ink: #f5f0e6;
  --muted: #b8b49f;
  --paper: #07110d;
  --surface: #111b14;
  --accent: #d99a32;
  --accent-dark: #f0bd63;
  --teal: #1a281d;
  --line: #4b5441;
  --error: #ff9588;
  --space-1: .45rem;
  --space-2: .8rem;
  --space-3: 1.2rem;
  --space-4: 2rem;
  --space-5: 3.5rem;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .34);
  font-family: "Helvetica Neue", Helvetica, Arial, ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--paper); }
.hero { color: var(--ink); background: var(--paper); padding: var(--space-5) max(5vw, 1rem) 7rem; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; width: 24rem; height: 24rem; right: -8rem; top: -12rem; border: 1px solid rgba(217,154,50,.3); border-radius: 50%; box-shadow: 0 0 0 4rem rgba(217,154,50,.055), 0 0 0 8rem rgba(217,154,50,.035); }
.hero__inner, .layout, footer { width: min(1160px, 90vw); margin-inline: auto; }
.eyebrow, .step { text-transform: uppercase; letter-spacing: .16em; font-size: .72rem; font-weight: 800; color: var(--accent); margin: 0 0 var(--space-2); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-family: "Snell Roundhand", "Brush Script MT", "Segoe Script", cursive; font-size: clamp(2.8rem, 8vw, 6.3rem); font-weight: 400; line-height: .95; letter-spacing: -.025em; max-width: 760px; margin-bottom: var(--space-3); }
.lede { color: var(--muted); font-size: 1.08rem; max-width: 550px; line-height: 1.6; }
.layout { margin-top: -4rem; position: relative; z-index: 1; padding-bottom: var(--space-5); }
.search-panel, .results-panel, .detail { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: clamp(1.25rem, 3vw, 2.5rem); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: var(--space-4); }
.section-heading h2 { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-weight: 400; font-size: 2rem; margin: 0; }
.form-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-3); }
label { display: grid; gap: var(--space-1); font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; color: var(--muted); }
input, select { width: 100%; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); font: inherit; font-size: .96rem; padding: .55rem .15rem; border-radius: 0; }
input:focus, select:focus, button:focus-visible { outline: 3px solid rgba(217,154,50,.4); outline-offset: 3px; }
.input-prefix { display: flex; align-items: center; border-bottom: 1px solid var(--line); font-size: 1rem; }
.input-prefix input { border: 0; }
button { border: 0; border-radius: 999px; background: var(--accent); color: var(--paper); font-weight: 800; padding: .95rem 1.35rem; margin-top: var(--space-4); display: flex; gap: 2rem; align-items: center; cursor: pointer; }
button:hover { background: var(--accent-dark); }
button:disabled { opacity: .55; cursor: wait; }
.results-panel { margin-top: var(--space-4); box-shadow: none; background: transparent; border: 0; padding-inline: 0; }
.results-heading { border-bottom: 1px solid var(--line); padding-bottom: var(--space-3); }
.data-pill { border: 1px solid var(--line); border-radius: 999px; padding: .5rem .8rem; color: var(--muted); font-size: .75rem; }
.status { color: var(--muted); min-height: 1.5rem; }
.status--error { color: var(--error); font-weight: 700; }
.filter-summary { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; padding: 1px; margin: var(--space-3) 0; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.filter-summary[hidden] { display: none; }
.filter-summary__item { background: var(--surface); padding: .75rem; }
.filter-summary dt { color: var(--muted); font-size: .65rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; }
.filter-summary dd { margin: .3rem 0 0; font-size: .82rem; font-weight: 700; }
.adjustments { margin: var(--space-4) 0; padding: var(--space-3); border: 1px solid var(--line); border-radius: var(--radius); background: var(--teal); color: var(--ink); display: grid; grid-template-columns: minmax(180px, .7fr) 2fr; gap: var(--space-4); align-items: center; }
.adjustments[hidden] { display: none; }
.adjustments h3 { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 1.45rem; font-weight: 400; margin-bottom: var(--space-1); }
.adjustments p:not(.step) { color: var(--muted); font-size: .85rem; line-height: 1.45; margin-bottom: 0; }
.adjustments__controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); align-items: end; }
.adjustments label { color: var(--muted); }
.adjustments input, .adjustments select { color: var(--ink); border-color: var(--line); }
.adjustments input[type="range"] { accent-color: var(--accent); }
.adjustments output { color: var(--ink); font-size: .86rem; letter-spacing: 0; text-transform: none; }
.adjustments button { margin: 0; white-space: nowrap; }
.adjustment-summary { margin: 0 0 var(--space-3); padding: .8rem 1rem; border-left: 3px solid var(--accent); background: rgba(217,154,50,.1); color: var(--muted); font-size: .86rem; }
.adjustment-summary[hidden] { display: none; }
.coverage { margin: 0 0 var(--space-4); padding: var(--space-3); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.coverage[hidden] { display: none; }
.coverage__heading { display: flex; justify-content: space-between; gap: var(--space-3); align-items: end; }
.coverage h3 { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 1.4rem; font-weight: 400; margin: 0; }
.coverage h4 { margin: var(--space-3) 0 var(--space-2); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
.coverage__heading > p { max-width: 320px; color: var(--muted); font-size: .82rem; margin: 0; }
.example-searches { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.example-search { margin: 0; padding: .65rem .9rem; background: var(--teal); color: var(--ink); }
.coverage details { margin-top: var(--space-3); border-top: 1px solid var(--line); padding-top: var(--space-3); }
.coverage summary { cursor: pointer; color: var(--accent-dark); font-weight: 800; font-size: .82rem; }
.coverage-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2); margin-top: var(--space-3); }
.coverage-card { display: grid; gap: .25rem; border: 1px solid var(--line); border-radius: 10px; padding: .8rem; }
.coverage-card span { color: var(--muted); font-size: .75rem; line-height: 1.35; }
.results { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
.result-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--space-4); display: grid; gap: var(--space-3); }
.card-top, .metric-row { display: flex; justify-content: space-between; gap: 1rem; align-items: start; }
.rank { color: var(--accent); font-size: .75rem; letter-spacing: .12em; font-weight: 800; }
.price { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 2rem; font-weight: 300; }
.route { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 1.55rem; font-weight: 400; margin: 0; }
.meta, .tradeoff { color: var(--muted); font-size: .9rem; line-height: 1.5; }
.metric { display: grid; gap: .25rem; }
.metric b { font-size: .95rem; }
.metric span { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.card-action { margin: 0; background: transparent; color: var(--accent-dark); padding: 0; border-radius: 0; justify-content: start; }
.card-action:hover { background: transparent; color: var(--accent); }
.detail { position: fixed; z-index: 4; inset: auto 2rem 2rem auto; width: min(460px, calc(100vw - 2rem)); max-height: calc(100vh - 4rem); overflow: auto; }
.detail__header { display: flex; justify-content: space-between; gap: 1rem; }
.detail__close { margin: 0; padding: .5rem .75rem; background: var(--teal); color: var(--ink); }
.detail__actions { display: flex; justify-content: flex-end; }
.detail__adjust { margin-top: var(--space-2); }
.leg { border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1rem; }
.empty { border: 1px dashed var(--line); border-radius: var(--radius); padding: var(--space-4); color: var(--muted); }
footer { border-top: 1px solid var(--line); color: var(--muted); padding: var(--space-4) 0; font-size: .78rem; }
@media (max-width: 800px) {
  .hero { padding-bottom: 6rem; }
  .form-grid, .results { grid-template-columns: 1fr 1fr; }
  .filter-summary { grid-template-columns: repeat(3, 1fr); }
  .coverage-options { grid-template-columns: repeat(2, 1fr); }
  .adjustments { grid-template-columns: 1fr; }
  .adjustments__controls { grid-template-columns: 1fr 1fr; }
  .detail { inset: auto 1rem 1rem; }
}
@media (max-width: 520px) {
  .hero__inner, .layout, footer { width: min(92vw, 100%); }
  .form-grid, .results { grid-template-columns: 1fr; }
  .filter-summary { grid-template-columns: repeat(2, 1fr); }
  .coverage__heading { align-items: start; flex-direction: column; }
  .coverage-options { grid-template-columns: 1fr; }
  .adjustments__controls { grid-template-columns: 1fr; }
  .section-heading { align-items: start; flex-direction: column; }
  .result-card { padding: 1.3rem; }
}