:root {
  --navy: #1c1856;
  --navy-deep: #100d38;
  --green: #4fb84a;
  --green-deep: #368a33;
  --paper: #f7f4ee;
  --ink: #23212f;
  --ink-soft: #6b6878;
  --white: #ffffff;
  --border: #e5e3ea;
  --danger: #c0392b;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: 76px; /* espacio para la barra inferior */
}
a { text-decoration: none; color: inherit; }
h1, h2, h3 { margin: 0 0 8px; color: var(--navy-deep); }
p { margin: 0 0 10px; }

.container { max-width: 720px; margin: 0 auto; padding: 16px; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.topbar h1 { font-size: 1.15rem; margin: 0; }
.topbar .volver { font-size: 1.3rem; color: var(--navy); margin-right: 10px; }
.topbar-left { display: flex; align-items: center; }

/* ---------- Bottom nav ---------- */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  background: var(--white);
  border-top: 1px solid var(--border);
  display: flex;
  padding: 6px 0 10px;
}
.bottom-nav a {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  font-size: 0.68rem;
  color: var(--ink-soft);
  padding: 6px 0;
}
.bottom-nav a .ico { font-size: 1.25rem; }
.bottom-nav a.active { color: var(--green-deep); font-weight: 600; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-weight: 600; font-size: 0.94rem;
  padding: 12px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  background: var(--paper); color: var(--navy-deep);
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:disabled { background: #b9dab8; cursor: not-allowed; }
.btn-outline { background: transparent; border-color: var(--navy); color: var(--navy-deep); }
.btn-danger-outline { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 12px; font-size: 0.82rem; }
.fab {
  position: fixed; right: 18px; bottom: 90px; z-index: 45;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--green); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; box-shadow: 0 10px 24px -6px rgba(0,0,0,0.35);
}

/* ---------- Cards ---------- */
.card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 12px;
}

/* ---------- Forms ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 0.84rem; font-weight: 600; color: var(--navy-deep); margin-bottom: 5px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font-size: 0.95rem;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--white); color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--green); border-color: var(--green);
}
.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 0.9rem; }
.flash.success { background: #e6f4e5; color: var(--green-deep); }
.flash.danger { background: #fbe7e7; color: #a53434; }
.flash.warning { background: #fdf1da; color: #92650c; }
.flash.info { background: #e8ecfb; color: var(--navy-deep); }

/* ---------- Listados ---------- */
.list-item {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 10px;
}
.list-item .titulo { font-weight: 600; color: var(--navy-deep); font-size: 0.95rem; }
.list-item .sub { font-size: 0.8rem; color: var(--ink-soft); margin-top: 2px; }
.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.72rem; font-weight: 600; background: #e6f4e5; color: var(--green-deep); }

.searchbar {
  display: flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; margin-bottom: 14px;
}
.searchbar input { border: none; outline: none; flex: 1; font-size: 0.95rem; background: transparent; }

.empty-state { text-align: center; color: var(--ink-soft); padding: 40px 20px; }

/* ---------- Nueva cotización: pasos ---------- */
.chip-row { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 14px; }
.chip {
  flex: 0 0 auto; padding: 8px 16px; border-radius: 20px; font-size: 0.82rem; font-weight: 600;
  background: var(--white); border: 1px solid var(--border); color: var(--ink-soft); white-space: nowrap;
}
.chip.active { background: var(--green); color: #fff; border-color: var(--green); }

.producto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 90px; }
.producto-card {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px; text-align: left; position: relative;
}
.producto-card .precio { font-weight: 700; color: var(--navy-deep); font-size: 1rem; }
.producto-card .nombre { font-size: 0.82rem; color: var(--ink); margin: 4px 0; min-height: 34px; }
.producto-card .stock { font-size: 0.72rem; color: var(--green-deep); }
.producto-card .agregar {
  margin-top: 8px; width: 100%; padding: 8px; border-radius: 8px; border: none;
  background: var(--navy); color: #fff; font-weight: 600; font-size: 0.82rem;
}
.producto-card .badge-cant {
  position: absolute; top: 8px; right: 8px;
  background: var(--navy); color: #fff; font-size: 0.72rem; font-weight: 700;
  border-radius: 50%; width: 22px; height: 22px; display: flex; align-items: center; justify-content: center;
}

.carrito-panel {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 55;
  background: var(--white); border-top: 1px solid var(--border);
  border-radius: 16px 16px 0 0; box-shadow: 0 -8px 24px -12px rgba(0,0,0,0.3);
  max-height: 78vh; overflow-y: auto;
  padding: 16px;
}
.carrito-item { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.carrito-item .info { flex: 1; }
.carrito-item .info .nombre { font-weight: 600; font-size: 0.88rem; color: var(--navy-deep); }
.stepper { display: flex; align-items: center; gap: 6px; }
.stepper button {
  width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--paper); font-size: 1rem; font-weight: 700; color: var(--navy-deep);
}
.stepper input { width: 46px; text-align: center; border: 1px solid var(--border); border-radius: 6px; padding: 5px; }
.precio-input { width: 76px; border: 1px solid var(--border); border-radius: 6px; padding: 6px; text-align: right; font-size: 0.85rem; }

.barra-total {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 46;
  background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
}
.barra-total .monto { font-weight: 700; font-size: 1.05rem; }
.barra-total button {
  background: var(--green); color: #fff; border: none; border-radius: 8px;
  padding: 10px 18px; font-weight: 700; font-size: 0.9rem;
}

.logo-preview { width: 72px; height: 72px; object-fit: contain; background: var(--paper); border-radius: 8px; border: 1px solid var(--border); margin-bottom: 10px; }

/* ---------- Detalle de cotización (estilo comprobante) ---------- */
.comprobante {
  background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 22px;
}
.comprobante-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.comprobante-header img { width: 52px; height: 52px; object-fit: contain; }
.comprobante-empresa { font-weight: 700; color: var(--navy-deep); }
.comprobante-meta { text-align: right; font-size: 0.78rem; color: var(--ink-soft); }
.comprobante-fila { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.88rem; }
.comprobante-total { display: flex; justify-content: space-between; font-size: 1.15rem; font-weight: 700; color: var(--navy-deep); margin-top: 14px; }

@media (min-width: 640px) {
  .producto-grid { grid-template-columns: repeat(3, 1fr); }
}