/* ---- Japandi: cálido, claro, sereno. Madera, lino, piedra. ---- */
:root {
  --bg: #f4f1ea;          /* lino */
  --card: #fdfcf9;        /* papel */
  --card-2: #f7f4ed;      /* papel sombreado */
  --border: #e4ded0;      /* arena */
  --text: #3d3830;        /* tinta cálida */
  --muted: #8a8172;       /* piedra */
  --accent: #7c8f6e;      /* verde salvia */
  --accent-deep: #5f7054;
  --accent-ink: #f4f6f0;
  --meli: #b5854c;        /* arcilla / madera */
  --meli-deep: #96693a;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(61, 56, 48, 0.04), 0 6px 18px rgba(61, 56, 48, 0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 "Avenir Next", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---------- header ---------- */
.topbar {
  max-width: 1440px;
  margin: 0 auto;
  padding: 26px 32px 6px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar h1 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.topbar .sub { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.topbar-actions { display: flex; gap: 8px; align-items: center; padding-bottom: 2px; }

/* ---------- layout 3 columnas: todo visible sin scroll ---------- */
.layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: 18px 32px 36px;
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.15fr;
  gap: 20px;
  align-items: start;
}
.col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr 1fr; }
  .col:last-child { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .layout { grid-template-columns: 1fr; padding: 14px 16px 28px; }
  .col:last-child { grid-column: auto; }
  .topbar { padding: 20px 16px 4px; }
}

/* ---------- cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.card h2::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 8px;
  transform: translateY(-3px);
}

/* ---------- campos ---------- */
.grid { display: grid; gap: 12px 14px; margin-bottom: 4px; }
.grid.two { grid-template-columns: 1fr 1fr; }
.grid:not(.two) { grid-template-columns: 1fr; }
@media (max-width: 460px) { .grid.two { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.grid .field { margin-bottom: 0; }
.field-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.input {
  width: 100%;
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 9px;
  padding: 9px 12px;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 143, 110, 0.18);
}
.input.compact { width: auto; padding: 7px 10px; font-size: 13px; background: var(--card); }

.input-row { display: flex; align-items: center; gap: 8px; }
.suffix { color: var(--muted); font-size: 13px; }

.hint { margin: 0; font-size: 12px; color: var(--muted); }
.hint.subtle { opacity: 0.8; font-style: italic; margin-top: 4px; }
#printer-source:empty { display: none; }

/* ---------- chips multiplicador ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent-deep); }
.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* ---------- referencias ---------- */
.refs { margin: 10px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
.refs li { margin-bottom: 3px; }
.refs[hidden] { display: none; }

/* ---------- resultados ---------- */
.results-card { position: sticky; top: 18px; }

.totals { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }
.total-box {
  background: rgba(124, 143, 110, 0.1);
  border: 1px solid rgba(124, 143, 110, 0.4);
  border-radius: 11px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.total-box.meli {
  background: rgba(181, 133, 76, 0.09);
  border-color: rgba(181, 133, 76, 0.4);
}
.total-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent-deep);
}
.total-box.meli .total-label { color: var(--meli-deep); }
.total-value {
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
@media (max-width: 460px) { .totals { grid-template-columns: 1fr; } }

.results { display: flex; flex-direction: column; }
.result-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
}
.result-row:last-child { border-bottom: none; }
.result-row.strong { font-weight: 700; }
.result-label { color: var(--muted); }
.result-row.strong .result-label { color: var(--text); }

/* ---------- botones ---------- */
.btn {
  border-radius: 9px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent-deep); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  width: 100%;
  margin-top: 16px;
  padding: 12px 16px;
}
.btn.primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--accent-deep); }
.btn.small { padding: 5px 12px; font-size: 12px; margin-top: 2px; }