/* =====================================================================
   ERP Inventario Multibodega - Sistema de diseño
   ---------------------------------------------------------------------
   Dirección: "sala de control" de inventario. Fondo oscuro tipo consola
   industrial, acento ámbar para alertas de stock/operación, tipografía
   monoespaciada para todo dato cuantitativo (SKU, cantidades, Kardex)
   y sans-serif para texto de interfaz. Densidad alta: esto es una
   herramienta de trabajo diario, no una landing page.

   Paleta:
     --bg-0   #11151c  fondo general (casi negro azulado)
     --bg-1   #171c25  paneles / sidebar
     --bg-2   #1f2630  tarjetas / inputs
     --line   #2a313d  bordes
     --ink-1  #e8ebf0  texto principal
     --ink-2  #97a1b0  texto secundario
     --amber  #e8a23d  acento principal (alerta / acción)
     --green  #4caf7d  entradas / positivo
     --red    #d96b6b  salidas / negativo
     --blue   #5b9bd9  transferencias / info
   ===================================================================== */

:root {
  --bg-0: #11151c;
  --bg-1: #171c25;
  --bg-2: #1f2630;
  --bg-3: #262e3a;
  --line: #2a313d;
  --ink-1: #e8ebf0;
  --ink-2: #97a1b0;
  --ink-3: #5e6776;
  --amber: #e8a23d;
  --amber-dim: #3a2f1c;
  --green: #4caf7d;
  --green-dim: #1c2e26;
  --red: #d96b6b;
  --red-dim: #2e1f1f;
  --blue: #5b9bd9;
  --blue-dim: #1c2733;

  --font-display: "Spline Sans", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;

  --radius: 6px;
  --sidebar-w: 230px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  height: 100vh;
}

::selection { background: var(--amber); color: #1a1304; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-3); }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.mono { font-family: var(--font-mono); }

/* ===================== LAYOUT GENERAL ===================== */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: 56px 1fr;
  height: 100vh;
}

/* ----- Topbar ----- */
.topbar {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line);
}

.topbar__search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 12px;
  width: 360px;
  color: var(--ink-2);
}

.topbar__search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink-1);
  font-size: 13px;
  width: 100%;
  font-family: var(--font-body);
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.topbar__clock {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.02em;
}

.badge-local {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid #2a4636;
  padding: 4px 9px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.badge-local::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px var(--green-dim);
}

/* ----- Sidebar ----- */
.sidebar {
  grid-column: 1;
  grid-row: 1 / 3;
  background: var(--bg-1);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 18px 0;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 18px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.sidebar__brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.sidebar__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.sidebar__brand-text strong {
  font-family: var(--font-display);
  font-size: 13.5px;
  letter-spacing: 0.01em;
}

.sidebar__brand-text span {
  font-size: 10.5px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-group {
  margin-top: 14px;
  padding: 0 12px;
}

.nav-group__label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  padding: 0 10px 6px;
  font-family: var(--font-mono);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius);
  color: var(--ink-2);
  font-size: 13px;
  margin-bottom: 2px;
  border: 1px solid transparent;
  transition: background 0.12s, color 0.12s;
}

.nav-link svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.85; }

.nav-link:hover {
  background: var(--bg-2);
  color: var(--ink-1);
}

.nav-link.active {
  background: var(--amber-dim);
  color: var(--amber);
  border-color: #4a3a20;
  font-weight: 600;
}

.sidebar__footer {
  margin-top: auto;
  padding: 14px 20px 0;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--ink-3);
  font-family: var(--font-mono);
}

/* ----- Main content ----- */
.main {
  grid-column: 2;
  grid-row: 2;
  overflow-y: auto;
  padding: 24px 28px 60px;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 21px;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.page-header p {
  margin: 0;
  color: var(--ink-2);
  font-size: 13px;
}

/* ===================== COMPONENTES ===================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--ink-1);
  white-space: nowrap;
}

.btn:hover { background: var(--bg-3); }

.btn-primary {
  background: var(--amber);
  border-color: var(--amber);
  color: #1a1304;
}

.btn-primary:hover { background: #f0ad55; }

.btn-danger {
  background: transparent;
  border-color: #4a2e2e;
  color: var(--red);
}

.btn-danger:hover { background: var(--red-dim); }

.btn-sm { padding: 5px 10px; font-size: 12px; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Tarjetas KPI */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  position: relative;
  overflow: hidden;
}

.kpi-card__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-3);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.kpi-card__value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  color: var(--ink-1);
}

.kpi-card__sub {
  font-size: 12px;
  color: var(--ink-2);
  margin-top: 4px;
}

.kpi-card--amber .kpi-card__value { color: var(--amber); }
.kpi-card--green .kpi-card__value { color: var(--green); }
.kpi-card--red .kpi-card__value { color: var(--red); }

/* Paneles */
.panel {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 20px;
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.panel__header h2 {
  font-size: 14px;
  font-family: var(--font-display);
  margin: 0;
}

.panel__body { padding: 18px; }
.panel__body--flush { padding: 0; }

/* Tablas de datos */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  font-family: var(--font-mono);
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
  position: sticky;
  top: 0;
}

.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-1);
  vertical-align: middle;
}

.data-table tbody tr:hover { background: var(--bg-2); }
.data-table tbody tr:last-child td { border-bottom: none; }

.cell-mono { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2); }
.cell-strong { font-weight: 600; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
}

.tag-green { background: var(--green-dim); color: var(--green); }
.tag-red { background: var(--red-dim); color: var(--red); }
.tag-blue { background: var(--blue-dim); color: var(--blue); }
.tag-amber { background: var(--amber-dim); color: var(--amber); }
.tag-gray { background: var(--bg-3); color: var(--ink-2); }

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--ink-3);
}

.empty-state svg { width: 40px; height: 40px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { margin: 4px 0; font-size: 13px; }
.empty-state strong { color: var(--ink-2); font-size: 14px; }

/* Formularios */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.form-grid--full { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-size: 11.5px;
  color: var(--ink-2);
  font-weight: 600;
}

.field--required label::after {
  content: " *";
  color: var(--amber);
}

.field input,
.field select,
.field textarea {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 9px 11px;
  color: var(--ink-1);
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--amber);
}

.field textarea { resize: vertical; min-height: 70px; }

.field-hint { font-size: 11px; color: var(--ink-3); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 14, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 10px;
  width: 560px;
  max-width: 92vw;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.modal--wide { width: 760px; }

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--bg-1);
}

.modal__header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15px;
}

.modal__close {
  background: none;
  border: none;
  color: var(--ink-3);
  font-size: 18px;
  line-height: 1;
  padding: 4px;
}

.modal__close:hover { color: var(--ink-1); }

.modal__body { padding: 20px; }

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid var(--line);
}

/* Toasts */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 2000;
}

.toast {
  min-width: 280px;
  max-width: 380px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--ink-1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  animation: toast-in 0.18s ease-out;
}

.toast.success { border-left-color: var(--green); }
.toast.error { border-left-color: var(--red); }
.toast.warning { border-left-color: var(--amber); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tabs (para carga de facturas: JSON/XML/OCR) */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 9px 14px;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
}

.tab-btn.active { color: var(--amber); border-bottom-color: var(--amber); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Items dinámicos (factura manual / transferencia) */
.item-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
}

.item-row-transfer {
  display: grid;
  grid-template-columns: 2fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
}

.icon-btn {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-2);
}

.icon-btn:hover { color: var(--red); border-color: #4a2e2e; }

.dropzone {
  border: 1.5px dashed var(--line);
  border-radius: 8px;
  padding: 30px 20px;
  text-align: center;
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--amber);
  background: var(--amber-dim);
}

.dropzone svg { width: 28px; height: 28px; margin-bottom: 10px; opacity: 0.6; }

textarea.code-input {
  width: 100%;
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 12px;
  min-height: 220px;
  resize: vertical;
  outline: none;
}

textarea.code-input:focus { border-color: var(--amber); }

.helper-box {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 12px;
  color: var(--ink-2);
  margin-bottom: 14px;
}

.helper-box code {
  font-family: var(--font-mono);
  color: var(--amber);
  background: var(--bg-0);
  padding: 1px 5px;
  border-radius: 3px;
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-2) 25%, var(--bg-3) 50%, var(--bg-2) 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s infinite;
  border-radius: 4px;
  height: 14px;
}

@keyframes skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.text-right { text-align: right; }
.flex-end { display: flex; justify-content: flex-end; gap: 10px; }
.w-full { width: 100%; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.muted { color: var(--ink-2); }
.small { font-size: 12px; }

/* ===================== COTIZACIONES / NOTAS CRÉDITO ===================== */

.input-full {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 12px;
  padding: 4px 6px;
  box-sizing: border-box;
}
.input-full:focus {
  outline: none;
  border-color: var(--amber);
}

.input-sm {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 12px;
  padding: 4px 8px;
  height: 30px;
}

.tag-gray { background: var(--bg-3); color: var(--ink-2); }

/* ===================== ALARMAS BADGE ===================== */
.badge-alarma {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.badge-alarma--proxima {
  background: rgba(var(--amber-rgb, 245,166,35), 0.18);
  color: var(--amber);
  border: 1px solid rgba(var(--amber-rgb, 245,166,35), 0.35);
}
.badge-alarma--urgente {
  background: rgba(var(--red-rgb, 220,53,69), 0.18);
  color: var(--red);
  border: 1px solid rgba(var(--red-rgb, 220,53,69), 0.35);
  animation: alarma-pulse 1.6s ease-in-out infinite;
}
@keyframes alarma-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.55; }
}

/* ===================== ALARMAS PAGE ===================== */
.alarma-row--vencida  { background: rgba(220,53,69,0.07) !important; }
.alarma-row--urgente  { background: rgba(245,166,35,0.10) !important; }
.alarma-row--ok       { background: transparent !important; }


/* =====================================================================
   RESPONSIVE — Mobile & Tablet
   ===================================================================== */

/* ── Tablet (≤1024px): sidebar compacto con solo iconos ─────────────── */
@media (max-width: 1024px) {
  :root { --sidebar-w: 64px; }

  .sidebar__brand-text,
  .nav-group__label,
  .nav-link span,
  .sidebar__footer { display: none; }

  .sidebar__brand { justify-content: center; padding: 0 0 18px; }
  .sidebar__brand-logo { margin: 0 auto; }

  .nav-group { padding: 0 8px; }
  .nav-link { justify-content: center; padding: 10px; }
  .nav-link svg { opacity: 1; }

  .topbar__search { width: 200px; }
  .topbar__clock { display: none; }
}

/* ── Mobile (≤768px): sidebar oculto, drawer lateral ────────────────── */
@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }

  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 56px 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 240px;
    height: 100vh;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,.5);
  }

  .sidebar.open { transform: translateX(0); }

  /* Overlay oscuro detrás del drawer */
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    z-index: 199;
  }
  .sidebar-overlay.open { display: block; }

  .topbar {
    grid-column: 1;
    grid-row: 1;
    padding: 0 16px;
  }

  .main {
    grid-column: 1;
    grid-row: 2;
    padding: 16px 14px 60px;
  }

  /* Botón hamburguesa */
  .btn-hamburger {
    display: flex !important;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ink-1);
    padding: 6px;
    border-radius: 6px;
    flex-shrink: 0;
  }
  .btn-hamburger:hover { background: var(--bg-2); }

  /* Mostrar texto del sidebar cuando está abierto */
  .sidebar.open .sidebar__brand-text,
  .sidebar.open .nav-group__label,
  .sidebar.open .nav-link span,
  .sidebar.open .sidebar__footer { display: flex; }
  .sidebar.open .nav-link { justify-content: flex-start; }
  .sidebar.open .nav-group { padding: 0 12px; }
  .sidebar.open .sidebar__brand { justify-content: flex-start; padding: 0 20px 18px; }

  /* Tablas: scroll horizontal en móvil */
  .panel__body--flush { overflow-x: auto; }
  .data-table { min-width: 600px; }

  /* KPIs en columna */
  .kpi-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
  }

  /* Formularios en columna */
  .form-grid { grid-template-columns: 1fr !important; }

  /* Ocultar reloj y badge backend en móvil */
  .topbar__clock,
  #topbar-usuario,
  .badge-local { display: none; }

  /* Búsqueda más compacta */
  .topbar__search { width: 150px; }

  /* Page header en columna */
  .page-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  /* Modales fullscreen en móvil */
  .modal {
    width: 95vw !important;
    max-width: 95vw !important;
    margin: 10px auto;
    max-height: 90vh;
    overflow-y: auto;
  }
}

/* ── Extra small (≤480px) ────────────────────────────────────────────── */
@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr !important; }
  .topbar__search { width: 120px; }
  .topbar__right { gap: 8px; }
}