:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #172033;
  --muted: #6d7788;
  --border: #dfe5ec;
  --primary: #6d3df5;
  --primary-dark: #5426d4;
  --success: #138a52;
  --warning: #b46a00;
  --danger: #c83a48;
  --shadow: 0 14px 40px rgba(23, 32, 51, 0.08);
}

body.dark {
  --bg: #111521;
  --surface: #1a2030;
  --surface-soft: #222a3c;
  --text: #f4f7fb;
  --muted: #a9b3c3;
  --border: #30394d;
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 245px;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  background: #121625;
  color: #fff;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(135deg, #8c5cff, #5c2ce5);
  font-weight: 800;
  font-size: 22px;
}

.brand div {
  display: grid;
  gap: 2px;
}

.brand small {
  color: #9ea8bc;
}

nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  border: 0;
  padding: 12px 14px;
  border-radius: 10px;
  text-align: left;
  color: #b9c2d3;
  background: transparent;
  cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.09);
}

.sidebar-note {
  margin-top: auto;
  padding: 14px;
  display: grid;
  gap: 6px;
  border-radius: 12px;
  color: #cbd3e2;
  background: rgba(255, 255, 255, 0.06);
  font-size: 13px;
}

.app {
  margin-left: 245px;
  padding: 34px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 28px;
}

.topbar h1,
.panel h2 {
  margin: 0;
}

.topbar p {
  margin: 8px 0 0;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 6px !important;
  color: var(--primary) !important;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 800;
  font-size: 12px;
}

.ghost-button,
.secondary-button,
.primary-button {
  border-radius: 10px;
  padding: 11px 16px;
  border: 1px solid var(--border);
  cursor: pointer;
}

.ghost-button,
.secondary-button {
  color: var(--text);
  background: var(--surface);
}

.primary-button {
  color: #fff;
  border-color: var(--primary);
  background: var(--primary);
}

.primary-button:hover {
  background: var(--primary-dark);
}

.page-section {
  display: none;
}

.page-section.active {
  display: block;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.metric-card,
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.metric-card {
  min-height: 145px;
  padding: 20px;
  display: grid;
  align-content: center;
  gap: 10px;
  border-radius: 16px;
}

.metric-card span,
.metric-card small {
  color: var(--muted);
}

.metric-card strong {
  font-size: clamp(26px, 4vw, 36px);
}

.metric-card.primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, #7c4dff, #5426d4);
}

.metric-card.primary span,
.metric-card.primary small {
  color: rgba(255, 255, 255, 0.78);
}

.two-column-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.column {
  display: grid;
  gap: 20px;
}

.panel {
  padding: 24px;
  border-radius: 16px;
}

.sticky-panel {
  position: sticky;
  top: 20px;
}

.panel-heading {
  margin-bottom: 22px;
}

.panel-heading.split {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

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

input,
select {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-soft);
  color: var(--text);
}

input:focus,
select:focus {
  outline: 2px solid rgba(109, 61, 245, 0.22);
  border-color: var(--primary);
}

.input-suffix {
  position: relative;
}

.input-suffix input {
  padding-right: 38px;
}

.input-suffix span {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.mini-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.mini-summary div {
  padding: 14px;
  display: grid;
  gap: 6px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.mini-summary span {
  color: var(--muted);
  font-size: 13px;
}

.result-group {
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.result-group:first-of-type {
  border-top: 0;
}

.result-group h3 {
  margin: 0 0 12px;
  font-size: 15px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 7px 0;
  color: var(--muted);
}

.result-row strong {
  color: var(--text);
}

.result-row.total {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.highlight-group {
  margin: 8px -8px 0;
  padding: 18px 16px;
  border-radius: 12px;
  background: var(--surface-soft);
}

.status-badge {
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.status-badge.neutral {
  color: var(--muted);
  background: var(--surface-soft);
}

.status-badge.good {
  color: var(--success);
  background: rgba(19, 138, 82, 0.12);
}

.status-badge.warning {
  color: var(--warning);
  background: rgba(180, 106, 0, 0.12);
}

.status-badge.danger {
  color: var(--danger);
  background: rgba(200, 58, 72, 0.12);
}

.comparison-box,
.notice {
  margin-top: 16px;
  padding: 15px;
  border-radius: 12px;
  line-height: 1.55;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.muted {
  color: var(--muted);
}

@media (max-width: 1180px) {
  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-column-layout {
    grid-template-columns: 1fr;
  }

  .sticky-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .sidebar {
    position: static;
    width: 100%;
    padding: 14px;
  }

  .brand {
    margin-bottom: 14px;
  }

  nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .sidebar-note {
    display: none;
  }

  .nav-item {
    text-align: center;
    padding: 10px 6px;
    font-size: 13px;
  }

  .app {
    margin-left: 0;
    padding: 18px;
  }

  .topbar {
    flex-direction: column;
  }

  .metrics-grid,
  .form-grid,
  .mini-summary {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
  }
}


/* Catálogo de productos */
.import-box {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 14px;
  margin: 20px 0;
  padding: 18px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
}

.progress-message {
  margin: 12px 0;
  padding: 13px 15px;
  border-radius: 10px;
  background: rgba(109, 61, 245, 0.10);
  color: var(--primary);
  font-weight: 700;
}

.catalog-toolbar {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 14px;
  margin: 20px 0;
}

.catalog-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.catalog-stats article {
  display: grid;
  gap: 5px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
}

.catalog-stats span {
  color: var(--muted);
  font-size: 12px;
}

.catalog-stats strong {
  font-size: 23px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.catalog-table {
  width: 100%;
  min-width: 1050px;
  border-collapse: collapse;
}

.catalog-table th,
.catalog-table td {
  padding: 12px 13px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

.catalog-table th {
  position: sticky;
  top: 0;
  background: var(--surface-soft);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: 11px;
}

.catalog-table tbody tr:hover {
  background: var(--surface-soft);
}

.sku-missing {
  color: var(--danger);
  font-weight: 800;
}

.stock-ok {
  color: var(--success);
}

.stock-out {
  color: var(--danger);
}

.empty-state {
  padding: 28px !important;
  text-align: center !important;
  color: var(--muted);
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  margin-top: 16px;
}

.pagination button {
  padding: 8px 13px;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: var(--surface-soft);
}

@media (max-width: 760px) {
  .import-box,
  .catalog-toolbar,
  .catalog-stats {
    grid-template-columns: 1fr;
  }
}