:root {
  --bg-body: #f0f3f6;
  --bg-card: #ffffff;
  --bg-card-subtle: #f8fafc;
  --bg-header-box: #eef2f5;
  --border-color: #e2e8f0;
  --border-focus: #3182ce;
  --text-main: #2d3748;
  --text-muted: #718096;
  --text-heading: #1e3a8a;
  --table-header-bg: #1e3a8a;
  --table-header-color: #ffffff;
  --table-row-even: #fafbfc;
  --shadow-card: 0 4px 14px rgba(0, 0, 0, 0.06);
  --highlight-color: #27ae60;
  --carrillo-blue: #1e3a8a;
  --scrollbar-thumb: #cbd5e1;
  --scrollbar-thumb-hover: #94a3b8;
}

body.dark-mode {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-card-subtle: #182234;
  --bg-header-box: #243248;
  --border-color: #334155;
  --border-focus: #60a5fa;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-heading: #93c5fd;
  --table-header-bg: #0f172a;
  --table-header-color: #f8fafc;
  --table-row-even: #1b2537;
  --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.35);
  --highlight-color: #4ade80;
  --carrillo-blue: #3b82f6;
  --scrollbar-thumb: #334155;
  --scrollbar-thumb-hover: #475569;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-body);
  color: var(--text-main);
  transition: background-color 0.25s ease, color 0.25s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Barra Superior de Marca CarrilloDev */
.top-brand-banner {
  background: linear-gradient(90deg, #0f172a 0%, #1e3a8a 100%);
  color: #ffffff;
  padding: 10px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  border-bottom: 2px solid #3b82f6;
}

.brand-logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: white;
}

.brand-logo-area img {
  height: 38px;
  width: 38px;
  object-fit: contain;
  background-color: #ffffff;
  border-radius: 50%;
  padding: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  display: block;
}

.brand-title-badge {
  display: flex;
  flex-direction: column;
}

.brand-title-badge .site-name {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.brand-title-badge .site-tagline {
  font-size: 0.72rem;
  color: #93c5fd;
}

.brand-link-btn {
  color: #bfdbfe;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  transition: all 0.2s;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-link-btn:hover {
  background: #ffffff;
  color: #1e3a8a;
}

/* Layout principal */
.page-wrapper {
  flex: 1;
  padding: 20px;
}

.app-layout {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 22px;
  align-items: start;
  transition: grid-template-columns 0.3s ease;
}

/* Cuando el sidebar está oculto en Desktop / Tablet */
.app-layout.sidebar-collapsed {
  grid-template-columns: 0px 1fr;
  gap: 0;
}

.app-layout.sidebar-collapsed .sidebar-card {
  transform: translateX(-360px);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  padding: 0;
  margin: 0;
  border: none;
}

/* Tarjetas principales */
.sidebar-card,
.main-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

/* Barra lateral */
.sidebar-card {
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 12px;
}

.sidebar-header h3 {
  margin: 0;
  color: var(--text-heading);
  font-size: 1.15rem;
}

.search-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 12px;
  outline: none;
  background: var(--bg-card-subtle);
  color: var(--text-main);
}

.search-input:focus {
  border-color: var(--border-focus);
}

/* LISTA DE PRODUCTOS Y SCROLLBAR PERSONALIZADO ULTRA MODERNO */
.products-list {
  list-style: none;
  padding: 2px 4px 2px 0;
  margin: 0;
  max-height: 440px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

.products-list::-webkit-scrollbar {
  width: 6px;
}

.products-list::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 8px;
}

.products-list::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 8px;
  transition: background 0.2s;
}

.products-list::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

.product-item {
  padding: 12px;
  border-radius: 8px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.product-item:hover {
  background: var(--bg-header-box);
}

.product-item.active {
  background: rgba(49, 130, 206, 0.12);
  border-color: #3182ce;
  box-shadow: 0 0 0 1px #3182ce;
}

.product-item-info {
  flex: 1;
  overflow: hidden;
  padding-right: 8px;
}

.product-item-name {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-item-price {
  font-size: 0.85rem;
  color: var(--highlight-color);
  font-weight: bold;
  margin-top: 3px;
}

.product-item-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.item-delete-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s;
}

.item-delete-btn:hover {
  color: #e53e3e;
  background: rgba(229, 62, 62, 0.15);
}

.sidebar-section-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 18px 0 10px 0;
  padding-top: 15px;
  border-top: 1px dashed var(--border-color);
  display: block;
}

.sidebar-tools-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Encabezado del Calculador */
.app-title-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.title-left-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

h2 {
  color: var(--text-heading);
  margin: 0;
  font-size: 1.5rem;
}

/* Barra Superior de Exportación del Producto Actual */
.product-top-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

/* Datos del cliente / empresa y producto */
.product-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 20px;
  background: var(--bg-header-box);
  padding: 16px;
  border-radius: 8px;
}

.product-header .full-col {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.form-group label {
  font-weight: bold;
  color: var(--text-heading);
  font-size: 0.88rem;
}

.form-group input {
  padding: 9px 12px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  outline: none;
  background: var(--bg-card);
  color: var(--text-main);
}

.form-group input:focus {
  border-color: var(--border-focus);
}

/* Tabla */
.table-responsive {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 6px;
}

th,
td {
  border: 1px solid var(--border-color);
  padding: 8px 10px;
  text-align: left;
}

th {
  background-color: var(--table-header-bg);
  color: var(--table-header-color);
  font-weight: 600;
  font-size: 0.9rem;
}

tbody tr:nth-child(even) {
  background-color: var(--table-row-even);
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.9rem;
  outline: none;
  background: var(--bg-card);
  color: var(--text-main);
}

input[type="text"]:focus,
input[type="number"]:focus {
  border-color: var(--border-focus);
}

.table-actions-bar {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* Botones y estilos */
.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  background: #27ae60;
  color: white;
  border: none;
  padding: 8px 14px;
  cursor: pointer;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s, transform 0.1s, border-color 0.2s;
}

.btn:hover {
  background: #219150;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: #2980b9;
}

.btn-primary:hover {
  background: #1f6391;
}

.btn-excel {
  background: #107c41;
}

.btn-excel:hover {
  background: #0d5f32;
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-header-box);
  color: var(--text-main);
}

.btn-toggle-sidebar {
  background: var(--bg-card-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 7px 11px;
  font-size: 0.9rem;
}

.btn-toggle-sidebar:hover {
  background: var(--bg-header-box);
}

.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 7px 11px;
  font-size: 1rem;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-theme-toggle:hover {
  background: var(--bg-header-box);
}

.btn-danger {
  background: #e74c3c;
  padding: 5px 9px;
  font-size: 0.85rem;
}

.btn-danger:hover {
  background: #c0392b;
}

.btn-save {
  background: #8e44ad;
}

.btn-save:hover {
  background: #732d91;
}

/* Caja de totales */
.summary-box {
  margin-top: 25px;
  background: var(--bg-card-subtle);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 1rem;
}

.summary-row label {
  font-weight: 600;
  color: var(--text-muted);
}

.summary-row span {
  font-weight: bold;
  color: var(--text-main);
}

.highlight {
  color: var(--highlight-color) !important;
  font-size: 1.4rem !important;
}

/* Pie de página web */
.page-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 18px 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 30px;
}

.page-footer a {
  color: var(--carrillo-blue);
  text-decoration: none;
  font-weight: 700;
}

.page-footer a:hover {
  text-decoration: underline;
}

.footer-links {
  margin-top: 8px;
}

.footer-link-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 4px;
  text-decoration: underline;
  transition: all 0.2s;
}

.footer-link-btn:hover {
  color: var(--carrillo-blue);
  background: var(--bg-header-box);
}

/* Modal Legal (Privacidad & Términos) */
.legal-modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.legal-modal-backdrop.active {
  display: flex;
  opacity: 1;
}

.legal-modal-card {
  background: var(--bg-card);
  color: var(--text-main);
  width: 100%;
  max-width: 650px;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.legal-modal-backdrop.active .legal-modal-card {
  transform: scale(1);
}

.legal-modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card-subtle);
}

.legal-modal-header h3 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--text-heading);
}

.legal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s;
}

.legal-close-btn:hover {
  color: #e53e3e;
  background: rgba(229, 62, 62, 0.1);
}

.legal-modal-body {
  padding: 20px;
  overflow-y: auto;
  font-size: 0.92rem;
  line-height: 1.6;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

.legal-modal-body h4 {
  margin: 18px 0 6px 0;
  color: var(--text-heading);
  font-size: 0.98rem;
}

.legal-modal-body p {
  margin: 0 0 10px 0;
  color: var(--text-main);
}

.legal-modal-body code {
  background: var(--bg-header-box);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--carrillo-blue);
}

.legal-badge-pill {
  display: inline-block;
  background: rgba(39, 174, 96, 0.12);
  color: var(--highlight-color);
  border: 1px solid var(--highlight-color);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.legal-modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-card-subtle);
  display: flex;
  justify-content: flex-end;
}

/* Overlay de Advertencia Móvil */
.mobile-warning-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  z-index: 99999;
  padding: 24px 20px;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
}

.mobile-warning-card {
  background: var(--bg-card);
  color: var(--text-main);
  max-width: 440px;
  width: 100%;
  padding: 28px 22px;
  border-radius: 16px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  text-align: center;
}

.mobile-warning-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.mobile-warning-card h2 {
  font-size: 1.25rem;
  color: var(--text-heading);
  margin: 0 0 12px 0;
  line-height: 1.35;
}

.mobile-warning-card p {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-main);
  margin: 0 0 14px 0;
}

.mobile-tip-box {
  background: var(--bg-header-box);
  border: 1px solid var(--border-color);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.5;
  text-align: left;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.mobile-warning-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* En pantallas móviles (menores a 650px), mostrar el aviso automáticamente */
@media (max-width: 560px) {
  body:not(.bypass-mobile-warning) .mobile-warning-overlay {
    display: flex;
  }
}

/* Toast */
#toast-msg {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1e293b;
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  border: 1px solid #334155;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 9999;
}

#toast-msg.show {
  opacity: 1;
  transform: translateY(0);
}

/* Backdrop móvil */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 998;
  backdrop-filter: blur(2px);
}

/* Encabezado y pie especiales para el PDF */
.print-only-header,
.print-only-footer {
  display: none;
}

/* Adaptación Móvil y Tablets */
@media (max-width: 960px) {
  .app-layout {
    display: block;
  }

  .sidebar-card {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    max-width: 85vw;
    z-index: 999;
    border-radius: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.25);
  }

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

  .sidebar-overlay.active {
    display: block;
  }

  .product-header {
    grid-template-columns: 1fr;
  }

  .product-top-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .product-top-toolbar .btn-group {
    justify-content: space-between;
  }
}

/* ==========================================
   OPTIMIZACIÓN PROFESIONAL PARA PDF / IMPRESIÓN
   ========================================== */
@page {
  size: letter portrait;
  margin: 12mm 15mm 15mm 15mm;
}

@media print {
  body {
    background: #ffffff !important;
    color: #111827 !important;
    margin: 0 !important;
    padding: 0 !important;
    font-size: 10pt !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  .top-brand-banner,
  .page-footer,
  .sidebar-card,
  .product-top-toolbar,
  .sidebar-overlay,
  .no-print {
    display: none !important;
  }

  .page-wrapper {
    padding: 0 !important;
  }

  .app-layout {
    display: block !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .main-card {
    box-shadow: none !important;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
  }

  .app-title-bar {
    display: none !important;
  }

  /* Encabezado PDF con marca CarrilloDev y Empresa del Cliente */
  .print-only-header {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-bottom: 2.5px solid #1e3a8a !important;
    padding-bottom: 12px !important;
    margin-bottom: 16px !important;
  }

  .pdf-title-col h1 {
    margin: 0 !important;
    font-size: 16pt !important;
    color: #1e3a8a !important;
    font-weight: 800 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  .pdf-title-col .pdf-company-sub {
    font-size: 11pt !important;
    color: #334155 !important;
    font-weight: 700 !important;
    margin-top: 3px !important;
  }

  .pdf-brand-col {
    text-align: right !important;
  }

  .pdf-brand-col img {
    height: 38px !important;
    max-width: 160px !important;
    object-fit: contain !important;
  }

  .pdf-brand-col .pdf-powered {
    font-size: 8pt !important;
    color: #64748b !important;
    margin-top: 2px !important;
  }

  .pdf-brand-col .pdf-link {
    font-size: 8.5pt !important;
    color: #1e3a8a !important;
    font-weight: 700 !important;
  }

  /* Datos del producto */
  .product-header {
    background: #f8fafc !important;
    border: 1px solid #cbd5e1 !important;
    padding: 10px 14px !important;
    border-radius: 6px !important;
    margin-bottom: 14px !important;
    display: grid !important;
    grid-template-columns: 2fr 1fr !important;
    gap: 8px !important;
  }

  .product-header .hide-on-print {
    display: none !important;
  }

  .form-group label {
    color: #475569 !important;
    font-size: 8pt !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  input {
    border: none !important;
    background: transparent !important;
    padding: 0 !important;
    font-size: 10.5pt !important;
    font-weight: 600 !important;
    color: #0f172a !important;
  }

  table {
    width: 100% !important;
    border-collapse: collapse !important;
    margin-top: 6px !important;
    page-break-inside: auto !important;
  }

  tr {
    page-break-inside: avoid !important;
    page-break-after: auto !important;
  }

  th,
  td {
    border: 1px solid #cbd5e1 !important;
    padding: 6px 8px !important;
    font-size: 8.8pt !important;
  }

  th {
    background-color: #1e3a8a !important;
    color: #ffffff !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    font-size: 8.5pt !important;
  }

  td input {
    font-size: 8.8pt !important;
    font-weight: normal !important;
  }

  tbody tr:nth-child(even) {
    background-color: #f8fafc !important;
  }

  .col-accion {
    display: none !important;
  }

  .summary-box {
    margin-top: 18px !important;
    border: 1.5px solid #94a3b8 !important;
    background: #f8fafc !important;
    padding: 12px 18px !important;
    border-radius: 6px !important;
    page-break-inside: avoid !important;
  }

  .summary-row {
    font-size: 9.5pt !important;
    margin-bottom: 6px !important;
  }

  .summary-row span,
  .summary-row label {
    color: #1e293b !important;
  }

  .highlight {
    color: #15803d !important;
    font-size: 14pt !important;
    font-weight: 800 !important;
  }

  /* Pie de página en PDF */
  .print-only-footer {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    border-top: 1px solid #cbd5e1 !important;
    margin-top: 24px !important;
    padding-top: 8px !important;
    font-size: 8pt !important;
    color: #64748b !important;
    page-break-inside: avoid !important;
  }

  .print-only-footer strong {
    color: #1e3a8a !important;
  }
}