:root {
  --bg: #f5f4f1;
  --panel: #ffffff;
  --ink: #1f2624;
  --ink-soft: #5c6663;
  --line: #e1ded6;
  --accent: #1c4b3f;
  --accent-soft: #e6ede9;
  --warn: #b3492f;
  --radius: 6px;
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 20px;
  background: var(--accent);
  color: #fff;
}
.brand { font-size: 1.15rem; font-weight: 600; letter-spacing: 0.2px; }
.brand span { font-weight: 400; opacity: 0.8; }

.tabs { display: flex; gap: 4px; }
.tab-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.75);
  padding: 8px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.92rem;
}
.tab-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }
.tab-btn.active { color: var(--accent); background: #fff; font-weight: 600; }

main { max-width: 1100px; margin: 0 auto; padding: 20px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 800px) {
  .panel-grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 1rem; font-weight: 600; }
.card h3 { margin: 18px 0 8px; font-size: 0.9rem; font-weight: 600; color: var(--ink-soft); }

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.card-header-row h2 { margin: 0; }

/* ---------- Inputs ---------- */
input[type="text"], input[type="number"], input[type="date"], textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field { position: relative; margin-bottom: 6px; }
.hint { color: var(--ink-soft); font-size: 0.82rem; margin: 8px 0 4px; }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.88rem;
  padding: 4px 0;
  text-decoration: underline;
}

.btn-primary, .btn-secondary {
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 0.92rem;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #163d33; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-secondary:hover { background: var(--accent-soft); }
.btn-secondary:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- Dropdown de búsqueda ---------- */
.dropdown-results {
  position: absolute;
  z-index: 20;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  max-height: 260px;
  overflow-y: auto;
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}
.dropdown-results:empty { display: none; }
.dropdown-item {
  padding: 8px 11px;
  cursor: pointer;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}
.dropdown-item:last-child { border-bottom: none; }
.dropdown-item:hover { background: var(--accent-soft); }
.dropdown-item .item-code { color: var(--ink-soft); font-size: 0.8rem; }
.dropdown-item .item-price { color: var(--ink-soft); white-space: nowrap; }

.cliente-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 8px 11px;
  margin-top: 6px;
  font-size: 0.92rem;
  font-weight: 600;
}
.cliente-chip button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink-soft);
  font-size: 1rem;
}

/* ---------- Tabla de items ---------- */
.items-table { width: 100%; border-collapse: collapse; margin-top: 4px; }
.items-table th {
  text-align: left;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  padding: 6px 8px;
}
.items-table td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
  vertical-align: middle;
}
.items-table .num { text-align: right; }
.items-table input[type="number"] { width: 68px; padding: 5px 6px; text-align: right; }
.empty-row { text-align: center; color: var(--ink-soft); padding: 20px 0; font-size: 0.9rem; }
.row-remove {
  background: none; border: none; cursor: pointer; color: var(--warn); font-size: 1rem;
}

.totals-row {
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 10px;
  padding: 12px 8px 4px;
  font-size: 1rem;
}
.totals-row strong { font-size: 1.25rem; }

.actions-row { display: flex; gap: 10px; margin-top: 14px; }
.msg { font-size: 0.85rem; margin-top: 8px; min-height: 1.2em; }
.msg.error { color: var(--warn); }
.msg.ok { color: var(--accent); }

/* ---------- Clientes ---------- */
.clientes-lista { list-style: none; margin: 10px 0 0; padding: 0; max-height: 480px; overflow-y: auto; }
.clientes-lista li {
  padding: 9px 8px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  font-size: 0.92rem;
}
.clientes-lista li:hover { background: var(--accent-soft); }
.clientes-lista li.active { background: var(--accent); color: #fff; }

.ficha-header { display: flex; justify-content: space-between; align-items: center; }
.ficha-header h2 { margin: 0; }
.ficha-datos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 14px 0; }
.ficha-datos span { font-size: 0.75rem; text-transform: uppercase; color: var(--ink-soft); letter-spacing: 0.03em; }
.ficha-datos p { margin: 2px 0 0; font-size: 0.92rem; }
@media (max-width: 600px) { .ficha-datos { grid-template-columns: 1fr; } }

.ficha-stats { display: flex; gap: 24px; margin: 16px 0; flex-wrap: wrap; }
.ficha-stats .stat { display: flex; flex-direction: column; }
.ficha-stats strong { font-size: 1.4rem; }
.ficha-stats span { font-size: 0.78rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; }

/* ---------- Modal ---------- */
.modal {
  position: fixed; inset: 0; background: rgba(20,24,22,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal-box {
  background: #fff; border-radius: var(--radius); padding: 20px 22px; width: 100%; max-width: 420px;
}
.modal-box h2 { margin: 0 0 14px; font-size: 1.05rem; }
.modal-box label { display: block; font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 10px; }
.modal-box label input, .modal-box label textarea { margin-top: 4px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

/* ---------- Impresión ---------- */
.print-area { display: none; }
@media print {
  body * { visibility: hidden; }
  .print-area, .print-area * { visibility: visible; }
  .print-area {
    display: block;
    position: absolute; top: 0; left: 0; width: 100%;
    padding: 20px;
  }
  .print-area h1 { font-size: 1.3rem; margin: 0 0 4px; }
  .print-fecha { color: #555; margin: 0 0 14px; }
  .print-cliente { font-size: 1.05rem; font-weight: 600; margin: 0 0 16px; }
  #printTable { width: 100%; border-collapse: collapse; }
  #printTable th, #printTable td { border-bottom: 1px solid #ccc; padding: 6px 4px; text-align: left; font-size: 0.9rem; }
  #printTable th:nth-child(3), #printTable td:nth-child(3),
  #printTable th:nth-child(4), #printTable td:nth-child(4),
  #printTable th:nth-child(5), #printTable td:nth-child(5) { text-align: right; }
  .print-total { text-align: right; font-size: 1.05rem; margin-top: 14px; }
}