/* Layout: una columna estrecha tipo ticket de caja; pestañas arriba, resultado grande, anuncio entre bloques */
:root {
  --bg: #eef2f6;
  --paper: #ffffff;
  --ink: #14263a;
  --muted: #5b6b7d;
  --line: #d3dce6;
  --accent: #1d3b5c;
  --accent-ink: #ffffff;
  --mint: #0f8a6a;
  --mint-soft: #dff3ec;
  --ad: #e4eaf1;
  --f-display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
  --f-body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-num: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1722; --paper: #15222f; --ink: #e6edf4; --muted: #94a5b6; --line: #2a3a4b;
    --accent: #8fb8e3; --accent-ink: #0d1722; --mint: #4fd3a8; --mint-soft: #123329; --ad: #1b2a39;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1722; --paper: #15222f; --ink: #e6edf4; --muted: #94a5b6; --line: #2a3a4b;
  --accent: #8fb8e3; --accent-ink: #0d1722; --mint: #4fd3a8; --mint-soft: #123329; --ad: #1b2a39;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 var(--f-body);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 600px; margin: 0 auto; padding-block: 28px 48px; display: grid; gap: 20px; }
header { display: grid; gap: 4px; }
.brand { font: 800 2rem/1.05 var(--f-display); letter-spacing: -0.02em; margin: 0; text-wrap: balance; }
.brand span { color: var(--mint); }
.tagline { margin: 0; color: var(--muted); }
.nav a:focus-visible, input:focus-visible, select:focus-visible, .seg button:focus-visible { outline: 3px solid var(--mint); outline-offset: 2px; }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 20px; display: grid; gap: 16px; }
.panel h1, .panel h2 { font: 600 1.25rem/1.2 var(--f-display); margin: 0; }
.row { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
@media (max-width: 420px) { .row { grid-template-columns: 1fr; } }
label { display: grid; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; min-width: 0; }
input, select { font: 500 1.2rem var(--f-num); width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); }
.seg { display: flex; gap: 6px; flex-wrap: wrap; }
.seg button { font: 600 0.95rem var(--f-body); flex: 1 1 auto; padding: 9px 12px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--mint-soft); border-color: var(--mint); color: var(--mint); }
.ticket { border-top: 2px dashed var(--line); padding-top: 14px; display: grid; gap: 6px; font-variant-numeric: tabular-nums; }
.line { display: flex; justify-content: space-between; gap: 12px; font-family: var(--f-num); color: var(--muted); }
.line.total { color: var(--ink); font-size: 1.6rem; font-weight: 700; align-items: baseline; }
.line.total small { font: 600 0.85rem var(--f-body); text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.big { font: 700 1.6rem var(--f-num); color: var(--mint); }
.sub { display: grid; gap: 10px; padding-top: 14px; border-top: 1px solid var(--line); }
.sub:first-of-type { border-top: 0; padding-top: 0; }
.sub p { margin: 0; }
.ad-slot { min-height: 100px; border-radius: 10px; background: var(--ad); display: grid; place-items: center; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; }
.guide { display: grid; gap: 10px; max-width: 65ch; }
.guide h2 { font: 600 1.15rem var(--f-display); margin: 0; }
.guide p { margin: 0; color: var(--muted); }
.guide code { font-family: var(--f-num); font-size: 0.9em; color: var(--ink); }
footer { color: var(--muted); font-size: 0.85rem; display: flex; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }
@media (prefers-reduced-motion: no-preference) { .nav a, .seg button { transition: background .15s, color .15s; } }
.nav { display: flex; flex-wrap: wrap; gap: 4px; padding: 5px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; scrollbar-width: none; }
.nav a { flex: 1 1 auto; text-align: center; font: 600 0.92rem var(--f-body); text-decoration: none; padding: 9px 14px; border-radius: 8px; color: var(--muted); white-space: nowrap; }
.nav a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); }
.nav a:hover:not([aria-current="page"]) { color: var(--ink); }
.note { margin: 0; font-size: 0.85rem; color: var(--muted); }
.brand a { color: inherit; text-decoration: none; }
select { font: 500 1.05rem var(--f-body); }
.line span:first-child { font-family: var(--f-body); font-size: 0.95rem; }