/* Variables globales de color, sombras y apariencia general del sistema. */
:root {
  --bg: #f4efe7;
  --panel: rgba(255, 250, 243, 0.88);
  --panel-border: rgba(104, 73, 34, 0.14);
  --text: #1f1a16;
  --muted: #726657;
  --accent: #b95c2e;
  --accent-dark: #8a3f1b;
  --accent-soft: #f2d7c8;
  --success: #2b7a4b;
  --shadow: 0 24px 60px rgba(68, 46, 23, 0.12);
}

/* Ajustes base para que medidas y espaciados sean consistentes en todos los elementos. */
* {
  box-sizing: border-box;
}

/* Configuracion visual general del documento y del fondo principal. */
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 214, 176, 0.75), transparent 30%),
    linear-gradient(145deg, #f7f1e8 0%, #eadfce 45%, #f2ece4 100%);
  position: relative;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Suaviza el desplazamiento cuando se navega a otra seccion de la misma pagina. */
html {
  scroll-behavior: smooth;
}

/* Figuras decorativas fijas que flotan detras del contenido. */
.background-shape {
  position: fixed;
  border-radius: 999px;
  filter: blur(18px);
  opacity: 0.45;
  pointer-events: none;
}

.shape-a {
  width: 280px;
  height: 280px;
  background: rgba(214, 102, 48, 0.22);
  top: -40px;
  right: -60px;
}

.shape-b {
  width: 240px;
  height: 240px;
  background: rgba(124, 157, 85, 0.22);
  bottom: 10%;
  left: -80px;
}

/* Capas superiores que deben mantenerse por encima del fondo decorativo. */
.hero,
.dashboard {
  position: relative;
  z-index: 1;
}

/* Barra de navegacion fija en la parte superior. */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 32px;
  background: rgba(247, 241, 232, 0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(104, 73, 34, 0.12);
  animation: slideDown 0.7s ease both;
}

/* Logo o marca del sistema. */
.brand-mark {
  color: var(--text);
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

/* Contenedor de los enlaces del menu principal. */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Estilo de cada enlace de navegacion. */
.nav-link {
  position: relative;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  transition: transform 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 6px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(185, 92, 46, 0.1);
  color: var(--accent-dark);
  transform: translateY(-1px);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-link.is-active {
  color: var(--accent-dark);
  background: rgba(185, 92, 46, 0.12);
}

/* Boton hamburguesa para pantallas pequenas. */
.nav-toggle {
  display: none;
  width: 54px;
  height: 54px;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: none;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent-dark);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Cabecera principal de cada modulo. */
.hero {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  padding: 40px 32px 20px;
}

/* Etiquetas pequenas usadas como subtitulos visuales. */
.eyebrow,
.section-tag {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: var(--accent-dark);
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 0.95;
  margin-bottom: 14px;
}

.hero-copy {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  align-self: end;
}

.sales-hero {
  align-items: end;
}

.sales-hero-stats {
  grid-template-columns: minmax(220px, 320px);
  justify-content: end;
}

/* Tarjetas resumen y paneles grandes del contenido. */
.stat-card,
.panel {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.stat-card {
  border-radius: 22px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-card strong {
  font-size: 1.45rem;
}

.sales-summary-card {
  padding: 22px 24px;
}

.sales-summary-card span {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sales-summary-card strong {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1;
}

/* Contenedor principal de secciones dentro de cada pagina. */
.dashboard {
  display: grid;
  gap: 20px;
  padding: 0 32px 32px;
}

/* Cajas visuales que agrupan formularios, tablas o historiales. */
.panel {
  border-radius: 26px;
  padding: 24px;
  animation: fadeUp 0.6s ease both;
}

/* Encabezados internos de cada panel. */
.panel-heading {
  margin-bottom: 18px;
}

/* Variante de encabezado con elementos separados a izquierda y derecha. */
.split {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

/* Rejillas base para formularios de inventario y ventas. */
.grid-form,
.sale-form {
  display: grid;
  gap: 16px;
}

.grid-form {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: end;
}

.sale-form {
  grid-template-columns: 1.4fr 1.7fr 1fr 1fr auto;
  margin-bottom: 20px;
}

/* Estilo compartido de etiquetas y controles de formulario. */
label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
}

/* Apariencia general de campos y botones. */
input,
select,
button {
  font: inherit;
}

input,
select {
  border: 1px solid rgba(96, 72, 44, 0.18);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  padding: 13px 14px;
  border-radius: 16px;
  outline: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

input:focus,
select:focus {
  border-color: var(--accent);
  transform: translateY(-1px);
}

button {
  border: 0;
  border-radius: 16px;
  padding: 13px 18px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
}

/* Variantes de botones segun importancia de la accion. */
.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, #d17b43 100%);
  color: #fff7f1;
  box-shadow: 0 16px 30px rgba(185, 92, 46, 0.25);
}

.secondary-button {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.ghost-button {
  background: rgba(114, 102, 87, 0.08);
  color: var(--text);
  padding: 10px 12px;
}

.search-input {
  width: min(320px, 100%);
}

.hint-text {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Tabla principal del inventario y sus controles embebidos. */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(96, 72, 44, 0.12);
}

/* Controles especificos para editar precio y sumar stock. */
.price-editor {
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.toggle-field input {
  width: 22px;
  height: 22px;
  accent-color: var(--accent);
}

.form-actions-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.stock-adjuster {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.price-editor input {
  width: 120px;
  padding: 10px 12px;
  border-radius: 12px;
}

.stock-adjuster input {
  width: 130px;
  padding: 10px 12px;
  border-radius: 12px;
}

.danger-button {
  background: rgba(185, 92, 46, 0.14);
  color: var(--accent-dark);
}

th {
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Distribucion especial de la pagina de ventas. */
.sales-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 22px;
}

/* Caja visual del carrito temporal. */
.cart-box {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(96, 72, 44, 0.1);
  border-radius: 22px;
  padding: 18px;
}

.cart-header,
.cart-footer,
.sale-card-top,
.sale-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* Listas y tarjetas para historial de ventas y cortes. */
.cart-list,
.sale-products {
  list-style: none;
  padding: 0;
  margin: 14px 0;
}

.cart-list {
  min-height: 60px;
}

.cart-item,
.sale-products li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(96, 72, 44, 0.16);
}

.sales-history {
  display: grid;
  gap: 14px;
}

.sale-card {
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(96, 72, 44, 0.12);
  border-radius: 20px;
  padding: 18px;
}

/* Agrupadores de ventas por fecha o por corte. */
.sale-date-group {
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(96, 72, 44, 0.12);
  border-radius: 20px;
  padding: 0;
  overflow: hidden;
}

.sale-date-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.sale-date-summary::-webkit-details-marker {
  display: none;
}

.sale-date-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.sale-date-content {
  display: grid;
  gap: 12px;
  padding: 0 18px 18px;
  border-top: 1px solid rgba(96, 72, 44, 0.08);
}

.sale-date-content .sale-card {
  background: rgba(247, 238, 229, 0.7);
}

.sale-id {
  color: var(--accent-dark);
}

/* Etiquetas destacadas para contadores o estados cortos. */
.badge-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(185, 92, 46, 0.12);
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 800;
}

/* Tarjetas destacadas para accesos rapidos, clientes y analitica. */
.clients-showcase {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

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

.best-seller-card {
  padding: 22px;
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(242, 215, 200, 0.58));
  border: 1px solid rgba(96, 72, 44, 0.12);
  animation: floatIn 0.7s ease both;
}

.best-seller-label {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.best-seller-card strong {
  display: block;
  margin-bottom: 12px;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1;
  color: var(--accent-dark);
}

.best-seller-copy {
  margin-bottom: 0;
  color: var(--muted);
}

.client-highlight {
  padding: 20px;
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(242, 215, 200, 0.6));
  border: 1px solid rgba(96, 72, 44, 0.12);
  animation: floatIn 0.7s ease both;
}

.client-highlight strong {
  display: block;
  margin-bottom: 10px;
}

.client-highlight p {
  margin-bottom: 0;
  color: var(--muted);
}

.quick-link-card {
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.quick-link-card:hover,
.quick-link-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 20px 36px rgba(68, 46, 23, 0.12);
  border-color: rgba(185, 92, 46, 0.25);
}

.client-link-card {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.client-link-card:hover,
.client-link-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 18px 34px rgba(68, 46, 23, 0.1);
  border-color: rgba(185, 92, 46, 0.22);
}

.back-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

/* Utilidades de texto y estados visuales de stock. */
.muted-text {
  color: var(--muted);
}

.stock-ok {
  color: var(--success);
  font-weight: 800;
}

.stock-low {
  color: var(--accent-dark);
  font-weight: 800;
}

/* Animaciones suaves de entrada para dar sensacion de dinamismo. */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Ajustes responsivos para tablets y pantallas medianas. */
@media (max-width: 1024px) {
  .hero,
  .sales-layout,
  .grid-form,
  .sale-form {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .sales-hero-stats {
    justify-content: stretch;
  }

  .best-seller-grid,
  .clients-showcase {
    grid-template-columns: 1fr;
  }
}

/* Ajustes responsivos para celulares y menu movil. */
@media (max-width: 720px) {
  .main-nav,
  .hero,
  .dashboard {
    padding-left: 18px;
    padding-right: 18px;
  }

  .main-nav {
    flex-wrap: wrap;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: max-height 0.3s ease, opacity 0.25s ease, transform 0.25s ease;
  }

  .nav-menu.is-open {
    max-height: 220px;
    opacity: 1;
    transform: translateY(0);
    padding-top: 8px;
  }

  .nav-link {
    text-align: center;
  }

  .panel {
    padding: 18px;
    border-radius: 22px;
  }

  .split {
    flex-direction: column;
    align-items: stretch;
  }
}