/* Affordagas — single stylesheet */

:root {
  --ink: #14202b;
  --ink-soft: #5b6b7a;
  --line: #dce3ea;
  --bg: #f5f7f9;
  --card: #ffffff;
  --green: #12795a;
  --green-dark: #0d5c45;
  --amber: #a86500;
  --amber-bg: #fdf3e0;
  --red: #b3261e;
  --red-bg: #fdeceb;
  --green-bg: #e7f4ef;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 32, 43, .06), 0 4px 16px rgba(20, 32, 43, .05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--green-dark); }

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -.01em;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  font-size: 17px;
}

.topbar nav { display: flex; gap: 6px; flex-wrap: wrap; }

.topbar nav a {
  padding: 7px 13px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 500;
}

.topbar nav a:hover { background: var(--bg); color: var(--ink); }
.topbar nav a.on { background: var(--green-bg); color: var(--green-dark); }

/* ---------- hero ---------- */
.hero { margin-bottom: 28px; }
.hero h1 { font-size: clamp(28px, 4vw, 40px); line-height: 1.15; margin: 0 0 10px; letter-spacing: -.02em; }
.hero p { font-size: 18px; color: var(--ink-soft); max-width: 60ch; margin: 0 0 18px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

h1 { letter-spacing: -.02em; }
h2 { font-size: 21px; margin-top: 34px; letter-spacing: -.01em; }
.lede { color: var(--ink-soft); font-size: 17px; margin-top: -6px; }
.result-head { margin-top: 26px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover { border-color: #c2ccd6; }

.btn-primary {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.btn-primary:hover { background: var(--green-dark); border-color: var(--green-dark); }

/* ---------- cards & forms ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h2 { margin-top: 0; }

.form { margin: 18px 0; }
.row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-start; margin-bottom: 14px; }
.row > .btn { margin-top: 24px; }
.row:last-child { margin-bottom: 0; }

label { display: flex; flex-direction: column; gap: 5px; min-width: 150px; }
label.grow { flex: 1 1 240px; }
label > span { font-size: 13px; font-weight: 600; letter-spacing: .01em; }
label > span em { font-style: normal; font-weight: 400; color: var(--ink-soft); }

input[type=text], input[type=date], select {
  padding: 10px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
  color: var(--ink);
  min-width: 0;
}

input:focus, select:focus { outline: 2px solid var(--green); outline-offset: 1px; border-color: var(--green); }
input.warn { border-color: var(--amber); }
input.bad { border-color: var(--red); }

.check { flex-direction: row; align-items: center; gap: 7px; min-width: 0; margin-top: 30px; }
.check span { font-size: 14px; font-weight: 500; }

.hint { color: var(--ink-soft); font-size: 12.5px; min-height: 1.2em; }
.hint.warn { color: var(--amber); }
.hint.bad { color: var(--red); }
.hint.good { color: var(--green-dark); }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

/* ---------- station autocomplete ---------- */
.autocomplete { position: relative; }

.ac-list {
  position: absolute;
  top: calc(100% - 1.35em);
  left: 0;
  right: 0;
  z-index: 20;
  margin: 3px 0 0;
  padding: 4px;
  list-style: none;
  max-height: 260px;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(20, 32, 43, .13);
}

.ac-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  padding: 7px 9px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}

.ac-list li:hover, .ac-list li.on { background: var(--green-bg); }
.ac-list li strong { font-weight: 600; }
.ac-list li small { color: var(--ink-soft); }
.ac-count { margin-left: auto; color: var(--green-dark); font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.filter { margin-bottom: 8px; }

/* ---------- alerts ---------- */
.alert { border-radius: var(--radius); padding: 14px 16px; margin: 18px 0; border: 1px solid; }
.alert p { margin: 6px 0 0; }
.alert ul { margin: 8px 0 0; padding-left: 20px; }
.alert-ok    { background: var(--green-bg); border-color: #bfe0d3; color: #0b4b39; }
.alert-warn  { background: var(--amber-bg); border-color: #f0d6a4; color: #6d4300; }
.alert-error { background: var(--red-bg);   border-color: #f3c4c1; color: #8a1d17; }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 24px; }

.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex; flex-direction: column;
}

.stat strong { font-size: 26px; letter-spacing: -.02em; }
.stat span { color: var(--ink-soft); font-size: 13px; }

/* ---------- summary cards ---------- */
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 18px 0 26px; }

.summary-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.summary-card h3 { margin: 0 0 6px; font-size: 14px; color: var(--ink-soft); font-weight: 600; }
.summary-card .big { margin: 0 0 10px; font-size: 30px; font-weight: 700; letter-spacing: -.02em; color: var(--green-dark); }
.summary-card .big span { font-size: 12px; font-weight: 600; color: var(--ink-soft); margin-left: 7px; text-transform: uppercase; letter-spacing: .06em; }
.summary-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; margin: 0; font-size: 13.5px; }
.summary-card dl div { display: flex; justify-content: space-between; gap: 8px; }
.summary-card dt { color: var(--ink-soft); }
.summary-card dd { margin: 0; font-variant-numeric: tabular-nums; }

/* ---------- table ---------- */
.grid {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 12px;
}

.grid th, .grid td { padding: 11px 13px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.grid th { background: #f0f4f7; font-size: 12.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft); }
.grid tr:last-child td { border-bottom: 0; }
.grid td.price { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.grid tr.is-best td.price { color: var(--green-dark); }
.grid tr.is-flagged { background: #fffaf0; }

.tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--amber-bg);
  color: var(--amber);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  vertical-align: middle;
}

.tag-best { background: var(--green-bg); color: var(--green-dark); }

.chip {
  display: inline-block;
  padding: 4px 10px;
  margin: 3px 4px 3px 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  text-decoration: none;
  font-size: 13.5px;
}

.chip:hover { border-color: var(--green); }

.muted { color: var(--ink-soft); }
.small { font-size: 13.5px; }
.empty { padding: 22px; background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); color: var(--ink-soft); }

.how ol { margin: 0; padding-left: 20px; }
.how li { margin-bottom: 7px; }

footer {
  border-top: 1px solid var(--line);
  padding: 18px 20px;
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
  background: var(--card);
}

footer p { margin: 0; }

@media (max-width: 620px) {
  .form .row { flex-direction: column; align-items: stretch; }
  label { min-width: 0; }
  .grid th:nth-child(4), .grid td:nth-child(4) { display: none; }
}