:root {
  color-scheme: light;
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --line: #e3e6ec;
  --line-strong: #cbd1dc;
  --ink: #17202e;
  --ink-2: #59647a;
  --ink-3: #8a93a5;
  --brand: #1f4fa3;
  --brand-ink: #ffffff;
  --brand-soft: #e8f0fd;
  --ok: #12805c;
  --ok-soft: #e2f5ee;
  --warn: #9a6412;
  --warn-soft: #fdf3e0;
  --danger: #b3261e;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(17, 24, 39, .06), 0 8px 24px rgba(17, 24, 39, .06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #10141b;
    --surface: #181d26;
    --surface-2: #1f2530;
    --line: #2b3341;
    --line-strong: #3b4453;
    --ink: #e8ecf3;
    --ink-2: #a4aebf;
    --ink-3: #78839a;
    --brand: #6ea3f5;
    --brand-ink: #0d1420;
    --brand-soft: #1b2942;
    --ok: #4ecfa2;
    --ok-soft: #133029;
    --warn: #e0b063;
    --warn-soft: #33280f;
    --danger: #f08a82;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 14px 132px; }

/* ---------------------------------------------------------------- encabezado */

.top {
  background: var(--brand);
  color: var(--brand-ink);
  padding: 20px 14px 22px;
}
.top .wrap { padding-bottom: 0; }
.top .eyebrow {
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .8;
  margin: 0 0 4px;
}
.top h1 { margin: 0 0 2px; font-size: 21px; line-height: 1.25; }
.top .sub { margin: 0; font-size: 14px; opacity: .85; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-top: 14px;
  overflow: hidden;
}
.card > h2 {
  margin: 0;
  padding: 12px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.card .pad { padding: 14px; }

.hint { font-size: 14px; color: var(--ink-2); margin: 14px 2px 0; }

/* -------------------------------------------------------------------- items */

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 12px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.row:last-child { border-bottom: 0; }
.row.off .name, .row.off .meta { text-decoration: line-through; color: var(--ink-3); }
.row.off .line-total { color: var(--ink-3); }

.name { font-weight: 600; font-size: 15px; }
.meta { font-size: 13px; color: var(--ink-2); margin-top: 1px; }
.meta .note { color: var(--warn); }
.unit { font-size: 13px; color: var(--ink-3); margin-top: 2px; }

/* ---------------------------------------------------- elegir modelo con foto */

.variant-pick {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 7px;
  padding: 5px 10px 5px 5px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--ink);
  font-family: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.variant-pick:active { background: var(--brand-soft); }
.variant-pick img {
  width: 34px; height: 34px;
  object-fit: cover;
  border-radius: 7px;
  background: var(--bg);
  flex: none;
}
.variant-pick span { display: block; font-weight: 600; line-height: 1.3; }
.variant-pick em {
  display: block;
  font-style: normal;
  font-weight: 400;
  font-size: 12px;
  color: var(--brand);
}
.row.off .variant-pick { opacity: .55; }

.sheet {
  border: 0;
  border-radius: 16px 16px 0 0;
  padding: 0;
  background: var(--surface);
  color: var(--ink);
  width: 100%;
  max-width: 560px;
  max-height: 86vh;
  margin: auto auto 0;
  box-shadow: var(--shadow);
}
.sheet::backdrop { background: rgba(0, 0, 0, .5); }
@media (min-width: 600px) {
  .sheet { border-radius: 16px; margin: auto; }
}

.sheet-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 8px;
}
.sheet-head h2 { margin: 0; font-size: 17px; flex: 1; }
.sheet-hint { margin: 0 16px 12px; font-size: 13px; color: var(--ink-2); }

#variantList { padding: 0 16px 16px; display: grid; gap: 10px; overflow-y: auto; max-height: 62vh; }

.variant-option {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 10px;
  border: 2px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}
.variant-option[aria-pressed="true"] { border-color: var(--brand); background: var(--brand-soft); }
.variant-option:active { border-color: var(--brand); }

.variant-photo {
  width: 92px; height: 92px;
  border-radius: 9px;
  overflow: hidden;
  background: var(--surface-2);
  display: flex; align-items: center; justify-content: center;
}
.variant-photo img { width: 100%; height: 100%; object-fit: cover; }
.variant-photo.empty { font-size: 12px; color: var(--ink-3); }

.variant-name { font-weight: 600; font-size: 15px; }
.variant-price { margin-top: 5px; font-size: 16px; font-weight: 700; font-variant-numeric: tabular-nums; }

.item-main { min-width: 0; }

.qty { display: flex; align-items: center; gap: 6px; }
.qty button {
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  border-radius: 10px;
  font-size: 21px;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.qty button:active { background: var(--brand-soft); }
.qty button:disabled { opacity: .35; cursor: default; }
.qty input {
  width: 52px; height: 40px;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface);
  -moz-appearance: textfield;
}
.qty input::-webkit-outer-spin-button,
.qty input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.line-total {
  grid-column: 2;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--ink-2);
  margin-top: -4px;
}

/* ------------------------------------------------------------------ paralelo */

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
}
.chip[aria-pressed="true"] {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--brand-ink);
  font-weight: 600;
}

/* --------------------------------------------------------------- formulario */

label.field { display: block; margin-bottom: 12px; }
label.field:last-child { margin-bottom: 0; }
label.field span { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 5px; }
input[type="text"], input[type="tel"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
}
textarea { min-height: 84px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--brand); outline-offset: 1px; }

/* ------------------------------------------------------------- barra inferior */

.bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 20px rgba(17, 24, 39, .08);
  z-index: 20;
}
.bar .inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.bar .total-label { font-size: 12px; color: var(--ink-2); }
.bar .total { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.1; }
.bar .grow { flex: 1; }

.btn {
  border: 0;
  border-radius: 10px;
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--brand);
  color: var(--brand-ink);
}
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--line-strong); }
.btn.small { padding: 8px 13px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }

.saving {
  font-size: 12px;
  color: var(--ink-3);
  min-height: 16px;
}
.saving.ok { color: var(--ok); }
.saving.err { color: var(--danger); }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.row.unavailable { background: var(--surface-2); }
.row.unavailable .name { color: var(--ink-2); }
.row.unavailable .aviso { color: var(--warn); margin-top: 3px; }

.badge.nodisp {
  background: var(--warn-soft);
  color: var(--warn);
  white-space: nowrap;
  align-self: center;
}

.badge.nueva     { background: var(--surface-2); color: var(--ink-2); }
.badge.vista     { background: var(--brand-soft); color: var(--brand); }
.badge.editada   { background: var(--warn-soft); color: var(--warn); }
.badge.confirmada{ background: var(--ok-soft); color: var(--ok); }

.banner {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  background: var(--ok-soft);
  color: var(--ok);
  border: 1px solid color-mix(in srgb, var(--ok) 25%, transparent);
}
.banner.warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }

@media print {
  .bar, .no-print { display: none !important; }
  body { background: #fff; }
  .wrap { padding-bottom: 0; max-width: none; }
  .card { box-shadow: none; break-inside: avoid; }
  .top { background: #fff; color: #000; border-bottom: 2px solid #000; }
}