:root {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;

  /* Status Colors */
  --status-paid-bg: #dcfce7;
  --status-paid-text: #166534;
  --status-paid-border: #86efac;

  --status-pending-bg: #fef9c3;
  --status-pending-text: #854d0e;
  --status-pending-border: #fde047;

  --status-partial-bg: #dbeafe;
  --status-partial-text: #1e40af;
  --status-partial-border: #93c5fd;

  --status-overdue-bg: #fee2e2;
  --status-overdue-text: #991b1b;
  --status-overdue-border: #fca5a5;

  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-light: #fef2f2;

  --sidebar-width: 260px;
  --header-height: 64px;
  --radius: 10px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* App Container */
.app-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

/* Sidebar Navigation */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 40;
  transition: transform 0.25s ease-in-out;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border-color);
  gap: 0.75rem;
}

.brand-icon {
  font-size: 1.6rem;
  background: var(--primary-light);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.sidebar-menu {
  list-style: none;
  padding: 1.25rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.93rem;
  transition: background-color 0.15s, color 0.15s;
}

.nav-item a:hover {
  background-color: #f1f5f9;
  color: var(--text-primary);
}

.nav-item.active a {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-icon {
  font-size: 1.15rem;
}

.nav-badge {
  margin-left: auto;
  font-size: 0.75rem;
  background: #f1f5f9;
  color: var(--text-secondary);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
}

.nav-badge.danger {
  background: var(--status-overdue-bg);
  color: var(--status-overdue-text);
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--border-color);
  background: #fdfdfd;
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  max-width: calc(100% - var(--sidebar-width));
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow-x: hidden;
}

/* Mobile Header */
.top-header {
  height: var(--header-height);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 30;
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.25rem;
}

.header-info {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.today-badge {
  background: #f1f5f9;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
}

/* Page Views */
.content-container {
  padding: 1.5rem 2rem;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow-x: hidden;
}

.view-section {
  display: none;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.view-section.active {
  display: flex;
  flex-direction: column;
  width: 100%;
  box-sizing: border-box;
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
  width: 100%;
  box-sizing: border-box;
}

.view-title-group h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin: 0;
}

.view-title-group p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: 0.15rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

.btn-danger {
  background-color: var(--danger);
  color: white;
}

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

.btn-danger-outline {
  background: transparent;
  border-color: #fca5a5;
  color: var(--danger);
}

.btn-danger-outline:hover {
  background: var(--danger-light);
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

/* Dashboard Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.15rem;
  margin-bottom: 2rem;
}

/* Suppliers and Due Dates Stats Grid (Requirement: 4 on desktop, 2 on medium, 1 on mobile) */
.suppliers-stats-grid, .due-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.15rem;
  margin-bottom: 1.5rem;
  width: 100%;
  box-sizing: border-box;
}

@media (max-width: 1200px) {
  .suppliers-stats-grid, .due-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .suppliers-stats-grid, .due-stats-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  min-width: 0;
  overflow: hidden;
  box-sizing: border-box;
}

.stat-card:hover {
  box-shadow: var(--shadow);
}

.stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.stat-icon {
  font-size: 1.25rem;
}

.stat-value {
  font-size: clamp(1.2rem, 1.8vw, 1.65rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  word-break: break-word;
}

.stat-subtext {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.4rem;
}

.stat-card.alert-danger {
  border-left: 4px solid var(--danger);
}

.stat-card.alert-warning {
  border-left: 4px solid #eab308;
}

.stat-card.alert-primary {
  border-left: 4px solid var(--primary);
}

.stat-card.alert-success {
  border-left: 4px solid #16a34a;
}

/* Status Badges */
.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
}

.badge-status.pagada {
  background-color: var(--status-paid-bg);
  color: var(--status-paid-text);
  border-color: var(--status-paid-border);
}

.badge-status.pendiente {
  background-color: var(--status-pending-bg);
  color: var(--status-pending-text);
  border-color: var(--status-pending-border);
}

.badge-status.pago_parcial {
  background-color: var(--status-partial-bg);
  color: var(--status-partial-text);
  border-color: var(--status-partial-border);
}

.badge-status.vencida {
  background-color: var(--status-overdue-bg);
  color: var(--status-overdue-text);
  border-color: var(--status-overdue-border);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.badge-status.pagada .status-dot { background-color: #16a34a; }
.badge-status.pendiente .status-dot { background-color: #ca8a04; }
.badge-status.pago_parcial .status-dot { background-color: #2563eb; }
.badge-status.vencida .status-dot { background-color: #dc2626; }

/* Filter Tabs & Search Bar */
.filter-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.15rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  width: 100%;
  box-sizing: border-box;
}

.filter-row-top {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  width: 100%;
}

.search-input-wrapper {
  flex: 1;
  min-width: 0;
  width: 100%;
  position: relative;
  box-sizing: border-box;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.6rem 0.85rem 0.6rem 2.4rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--text-primary);
  background-color: #f8fafc;
  transition: all 0.15s ease;
}

.search-input:focus {
  outline: none;
  background-color: #fff;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.filter-tabs {
  display: flex;
  gap: 0.35rem;
  background: #f1f5f9;
  padding: 0.25rem;
  border-radius: 8px;
  overflow-x: auto;
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.tab-btn.active {
  background: #fff;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.filter-row-secondary {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.form-select, .form-input {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--text-primary);
  background: #fff;
}

/* Data Tables */
.table-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.table-wrapper {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 750px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

#suppliers-table, #due-dates-table {
  min-width: 900px;
  width: 100%;
}

.badge-days {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-days.vencida {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}
.badge-days.hoy {
  background: #fef9c3;
  color: #854d0e;
  border: 1px solid #fde047;
}
.badge-days.prox-7 {
  background: #ffedd5;
  color: #9a3412;
  border: 1px solid #fdba74;
}
.badge-days.prox-30 {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #93c5fd;
}
.badge-days.mas-30 {
  background: #f1f5f9;
  color: var(--text-secondary);
  border: 1px solid #cbd5e1;
}
.badge-days.pagada {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #86efac;
}

.due-group-row td {
  padding: 0.7rem 1rem !important;
  background: #f1f5f9;
  border-top: 2px solid var(--border-color);
  border-bottom: 2px solid var(--border-color) !important;
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.88rem;
}

.due-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 0.85rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.data-table th {
  background-color: #f8fafc;
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
  user-select: none;
}

.data-table th.sortable {
  cursor: pointer;
}

.data-table th.sortable:hover {
  background-color: #f1f5f9;
  color: var(--text-primary);
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background-color 0.1s ease;
  cursor: pointer;
}

.data-table tbody tr:hover {
  background-color: #f8fafc;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.currency {
  font-family: inherit;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* Form Styles */
.form-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  max-width: 900px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.col-span-2 {
  grid-column: span 2;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.form-control {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--text-primary);
  background-color: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.form-hint.warning {
  color: #b45309;
  font-weight: 500;
}

.form-hint.danger {
  color: var(--danger);
  font-weight: 500;
}

/* Calculations Summary Box in Form */
.calc-summary-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.calc-row.total-row {
  border-top: 1px solid var(--border-color);
  padding-top: 0.65rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* File Upload Drag & Drop Area */
.file-dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all 0.15s ease;
}

.file-dropzone:hover, .file-dropzone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.file-preview {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: 0.75rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--bg-surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 2rem);
  max-height: calc(100dvh - 2rem);
  margin: auto;
  overflow: hidden;
  position: relative;
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.modal-card form {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-header {
  padding: 1.15rem 1.4rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  background: var(--bg-surface);
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem 1.4rem;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  min-height: 0;
}

.modal-footer {
  padding: 0.9rem 1.4rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  background: #f8fafc;
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  z-index: 10;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 110;
}

.toast {
  background: #0f172a;
  color: white;
  padding: 0.75rem 1.15rem;
  border-radius: 8px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  animation: slideIn 0.2s ease;
}

.toast.success { background: #15803d; }
.toast.error { background: #b91c1c; }
.toast.warning { background: #b45309; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Empty states */
.empty-state {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.6;
}

/* Responsive Grid Helper Classes */
.invoice-detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

.detail-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.payment-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  font-size: 0.86rem;
}

.restore-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

/* Sidebar Backdrop for Mobile */
.sidebar-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  z-index: 39;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  pointer-events: none;
}

.sidebar-backdrop.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Responsive styles */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
    width: 100%;
    max-width: 100%;
  }
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.col-span-2 {
    grid-column: span 1;
  }
  .invoice-detail-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .view-header {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
}

@media (max-width: 640px) {
  .content-container {
    padding: 0.75rem;
  }

  /* Top Header on mobile */
  .top-header {
    padding: 0 0.75rem;
    height: 56px;
  }
  .top-header #today-display {
    display: none;
  }
  .top-header .header-info {
    gap: 0.4rem;
  }
  .top-header .btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.76rem;
  }
  .connection-status-badge {
    padding: 0.2rem 0.45rem;
    font-size: 0.72rem;
  }

  /* Dashboard Cards */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }
  .stat-card {
    padding: 0.85rem 1rem;
  }
  .stat-value {
    font-size: 1.35rem;
    word-break: break-all;
  }

  /* View Header */
  .view-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    margin-bottom: 1rem;
  }
  .view-header h1 {
    font-size: 1.25rem;
  }
  .view-header > div:last-child {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    width: 100%;
  }
  .view-header > div:last-child .btn {
    flex: 1;
    min-height: 40px;
    justify-content: center;
  }

  /* Filters & Tabs */
  .filter-card {
    padding: 0.85rem;
    margin-bottom: 1rem;
  }
  .filter-row-top {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
  }
  .filter-tabs {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.25rem;
  }
  .filter-row-secondary {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  .filter-row-secondary > * {
    width: 100% !important;
  }

  /* Tables: Smooth Horizontal Scroll */
  .table-card {
    border-radius: var(--radius);
  }
  .table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }
  .data-table th, .data-table td {
    padding: 0.65rem 0.75rem;
    font-size: 0.82rem;
  }

  /* Forms and Inputs */
  .form-card {
    padding: 1rem;
  }
  .form-control, .form-input, .form-select, select, input[type="text"], input[type="number"], input[type="date"], textarea {
    font-size: 16px !important; /* Prevents auto-zoom on iOS */
    min-height: 42px;
  }
  .form-row-2col {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
  }
  .detail-info-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .payment-info-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .restore-compare-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  /* MODALS: Full mobile scrollability and accessibility */
  .modal-overlay {
    padding: 0.5rem;
    align-items: center;
  }
  .modal-card {
    max-height: calc(100dvh - 1rem);
    max-height: calc(100vh - 1rem);
    border-radius: 12px;
    width: 100%;
  }
  .modal-header {
    padding: 0.85rem 1rem;
  }
  .modal-title {
    font-size: 1.05rem;
  }
  .modal-body {
    padding: 0.85rem 1rem;
  }
  .modal-footer {
    padding: 0.75rem 1rem;
    flex-direction: column-reverse;
    gap: 0.5rem;
  }
  .modal-footer .btn {
    width: 100%;
    min-height: 44px;
    font-size: 0.95rem;
    justify-content: center;
  }

  /* Suppliers and Due Dates stats */
  .suppliers-stats-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 0.95rem;
  }
  .brand-subtitle {
    display: none;
  }
  .top-header #current-view-name {
    font-size: 0.85rem;
  }
  .btn-sm {
    padding: 0.35rem 0.6rem;
  }
}

/* ==========================================================================
   VENCIMIENTOS / DUE DATES MODULE
   ========================================================================== */
.due-banner {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid #334155;
  flex-wrap: wrap;
  gap: 1rem;
}
.due-banner-content h3 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.due-banner-content .due-total-amount {
  font-size: 1.85rem;
  font-weight: 800;
  color: #38bdf8;
  letter-spacing: -0.02em;
}
.due-banner-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}
.due-banner-metric {
  text-align: right;
}
.due-banner-metric .meta-title {
  font-size: 0.72rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.due-banner-metric .meta-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f1f5f9;
}

.due-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 1024px) {
  .due-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .due-stats-grid {
    grid-template-columns: 1fr;
  }
}

.due-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  position: relative;
  border-left-width: 5px;
}
.due-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.due-card.active {
  background: #f8fafc;
  outline: 2px solid var(--primary);
}
.due-card.card-vencida { border-left-color: var(--danger); }
.due-card.card-vencen-hoy { border-left-color: #eab308; }
.due-card.card-prox-7 { border-left-color: #f97316; }
.due-card.card-prox-30 { border-left-color: #3b82f6; }

.due-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.due-card-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.due-card-count {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: #f1f5f9;
  color: var(--text-primary);
}
.card-vencida .due-card-count { background: #fee2e2; color: #991b1b; }
.card-vencen-hoy .due-card-count { background: #fef3c7; color: #92400e; }
.card-prox-7 .due-card-count { background: #ffedd5; color: #9a3412; }
.card-prox-30 .due-card-count { background: #e0f2fe; color: #075985; }

.due-card-amount {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0.2rem;
}
.card-vencida .due-card-amount { color: var(--danger); }
.card-vencen-hoy .due-card-amount { color: #ca8a04; }
.card-prox-7 .due-card-amount { color: #c2410c; }
.card-prox-30 .due-card-amount { color: #1d4ed8; }

.due-card-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.period-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}
.period-tab {
  background: white;
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.period-tab:hover {
  background: #f8fafc;
  color: var(--text-primary);
}
.period-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.period-tab .tab-count {
  background: rgba(0,0,0,0.06);
  border-radius: 9999px;
  padding: 0.1rem 0.45rem;
  font-size: 0.72rem;
}
.period-tab.active .tab-count {
  background: rgba(255,255,255,0.25);
  color: white;
}

.badge-days {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge-days.vencida {
  background: #fee2e2;
  color: #991b1b;
}
.badge-days.hoy {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  animation: pulse-border 2s infinite;
}
.badge-days.prox-7 {
  background: #ffedd5;
  color: #9a3412;
}
.badge-days.prox-30 {
  background: #e0f2fe;
  color: #075985;
}
.badge-days.mas-30 {
  background: #f1f5f9;
  color: #475569;
}
.badge-days.pagada {
  background: #dcfce7;
  color: #166534;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.4); }
  50% { box-shadow: 0 0 0 3px rgba(234, 179, 8, 0); }
}

.due-group-row {
  background: #f8fafc;
  font-weight: 700;
  border-top: 2px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.due-group-row td {
  padding: 0.75rem 1rem !important;
}
.due-group-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.due-group-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.due-group-title {
  font-size: 0.92rem;
  font-weight: 700;
}
.due-group-count {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: #e2e8f0;
  color: var(--text-primary);
}
.due-group-total {
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.due-group-total strong {
  color: var(--text-primary);
}

/* ==========================================================================
   REPORTES / REPORTS MODULE
   ========================================================================== */
.report-actions-group {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.reports-stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 1200px) {
  .reports-stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 768px) {
  .reports-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .reports-stats-grid {
    grid-template-columns: 1fr;
  }
}

.quick-date-presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}
.preset-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-right: 0.25rem;
}
.preset-btn {
  background: white;
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.preset-btn:hover {
  background: #f8fafc;
  color: var(--text-primary);
  border-color: #cbd5e1;
}
.preset-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.reports-filter-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}
@media (max-width: 1100px) {
  .reports-filter-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 700px) {
  .reports-filter-grid {
    grid-template-columns: 1fr;
  }
}

.filter-hint-box {
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #0369a1;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 1100px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
}
.chart-header {
  margin-bottom: 1rem;
}
.chart-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.15rem 0;
}
.chart-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.chart-body {
  flex: 1;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.report-nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}
.rep-nav-tab {
  background: white;
  border: 1px solid var(--border-color);
  padding: 0.55rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.rep-nav-tab:hover {
  background: #f8fafc;
  color: var(--text-primary);
}
.rep-nav-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.15);
}

/* ==========================================================================
   CONFIGURACIÓN Y RESPALDO / BACKUP MODULE
   ========================================================================== */
.backup-stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}
@media (max-width: 1200px) {
  .backup-stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 768px) {
  .backup-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .backup-stats-grid {
    grid-template-columns: 1fr;
  }
}

.backup-operations-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
@media (max-width: 900px) {
  .backup-operations-grid {
    grid-template-columns: 1fr;
  }
}

.backup-action-card {
  display: flex;
  flex-direction: column;
}
.backup-card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}
.backup-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.backup-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.2rem 0;
}
.backup-card-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.35;
}
.backup-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.last-backup-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  margin-top: 1.5rem;
}

.backup-dropzone {
  border: 2px dashed #cbd5e1;
  background: #f8fafc;
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 1rem;
}
.backup-dropzone:hover, .backup-dropzone.dragover {
  border-color: var(--primary);
  background: #f0f7ff;
}

.backup-validation-card {
  background: white;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  animation: fadeIn 0.25s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Print Styles */
@media print {
  body {
    background: white !important;
    color: black !important;
    font-size: 10pt !important;
  }
  .sidebar,
  .top-header,
  .report-actions-group,
  .quick-date-presets,
  .reports-filter-grid,
  .filter-card,
  .charts-grid,
  .report-nav-tabs,
  #rep-table-search,
  .toast-container,
  .modal-overlay,
  .btn,
  .mobile-toggle {
    display: none !important;
  }
  .main-wrapper {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
  }
  .content-container {
    padding: 0 !important;
    max-width: 100% !important;
  }
  .view-section {
    display: none !important;
  }
  #view-reports {
    display: block !important;
  }
  .view-header {
    border-bottom: 2px solid #000;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
  }
  .view-header h1 {
    font-size: 16pt !important;
    color: #000 !important;
  }
  .reports-stats-grid {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 0.5rem !important;
    margin-bottom: 1rem !important;
  }
  .stat-card {
    border: 1px solid #ccc !important;
    padding: 0.5rem !important;
    box-shadow: none !important;
  }
  .stat-value {
    font-size: 11pt !important;
  }
  .table-card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
  .data-table {
    font-size: 8.5pt !important;
    width: 100% !important;
  }
  .data-table th, .data-table td {
    padding: 4px 6px !important;
    border: 1px solid #ddd !important;
  }
}

/* Connection Status Badge (Sección 13: Indicador discreto de conexión) */
.connection-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.25s ease;
  user-select: none;
}
.connection-status-badge.online {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}
.connection-status-badge.offline {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
  animation: pulseOffline 1.5s infinite;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.connection-status-badge.online .status-dot {
  background: #22c55e;
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}
.connection-status-badge.offline .status-dot {
  background: #ef4444;
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}
@keyframes pulseOffline {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}