/* ============================================================================
   SISTEMA DE DISEÑO PREMIUM (VANILLA CSS) - SAAS MULTI-TENANT DE PRÉSTAMOS
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Paleta de Colores HSL - Tema Oscuro Premium */
  --bg-main: 220, 24%, 7%;          /* #0b0d11 */
  --bg-sidebar: 224, 25%, 10%;      /* #131720 */
  --bg-card: 220, 22%, 14%;         /* #1d222e */
  --bg-card-glass: rgba(29, 34, 46, 0.65);
  
  --border-color: rgba(255, 255, 255, 0.07);
  --border-focus: 245, 75%, 65%;
  
  --text-primary: 210, 38%, 95%;    /* Slate 50 */
  --text-secondary: 215, 16%, 65%;  /* Slate 400 */
  --text-muted: 215, 13%, 45%;     /* Slate 600 */
  
  --primary: 245, 75%, 60%;         /* Indigo */
  --primary-hover: 245, 75%, 52%;
  --primary-glow: rgba(99, 102, 241, 0.2);
  
  --success: 150, 84%, 37%;         /* Esmeralda */
  --success-glow: rgba(16, 185, 129, 0.15);
  
  --warning: 35, 92%, 50%;          /* Ámbar */
  --warning-glow: rgba(245, 158, 11, 0.15);
  
  --danger: 350, 84%, 55%;          /* Rojo */
  --danger-glow: rgba(239, 68, 68, 0.15);

  --font-family: 'Outfit', sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
}

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

body {
  font-family: var(--font-family);
  background-color: hsl(var(--bg-main));
  color: hsl(var(--text-primary));
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

/* ============================================================================
   ESTRUCTURA PRINCIPAL Y SIDEBAR
   ============================================================================ */

.app-container {
  display: flex;
  width: 100vw;
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  background-color: hsl(var(--bg-sidebar));
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, hsl(var(--primary)), #ec4899);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.sidebar-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, #fff, hsl(var(--text-secondary)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-menu {
  list-style: none;
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-radius: var(--border-radius-md);
  color: hsl(var(--text-secondary));
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.menu-item:hover, .menu-item.active {
  background-color: rgba(255, 255, 255, 0.03);
  color: hsl(var(--text-primary));
}

.menu-item.active {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.02) 100%);
  border-left: 3px solid hsl(var(--primary));
  padding-left: 13px;
}

.menu-item i {
  font-size: 18px;
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: hsl(var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 14px;
  font-weight: 600;
}

.user-role {
  font-size: 12px;
  color: hsl(var(--text-muted));
}

/* ============================================================================
   CONTENIDO PRINCIPAL Y HEADER
   ============================================================================ */

.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: auto;
}

.content-header {
  height: 80px;
  border-bottom: 1px solid var(--border-color);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(11, 13, 17, 0.5);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-title-section h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.tenant-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.select-custom {
  background-color: hsl(var(--bg-card));
  color: hsl(var(--text-primary));
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--border-radius-md);
  font-family: var(--font-family);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: var(--transition-smooth);
}

.select-custom:focus {
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.content-body {
  padding: 40px;
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

/* ============================================================================
   ESTILOS DE VISTAS (PÁGINAS)
   ============================================================================ */

.view-section {
  display: none;
  animation: fadeIn 0.4s ease;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tarjetas de Métricas (KPIs) */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.metric-card {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, hsl(var(--primary)), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: hsl(var(--text-secondary));
  font-size: 14px;
  font-weight: 500;
}

.metric-icon-box {
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.metric-value {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
}

.metric-trend {
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Variaciones de Iconos */
.icon-primary { background-color: var(--primary-glow); color: hsl(var(--primary)); }
.icon-success { background-color: var(--success-glow); color: hsl(var(--success)); }
.icon-warning { background-color: var(--warning-glow); color: hsl(var(--warning)); }
.icon-danger { background-color: var(--danger-glow); color: hsl(var(--danger)); }

/* ============================================================================
   DISEÑO DE FORMULARIOS Y COMPONENTES
   ============================================================================ */

.card {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
  margin-bottom: 24px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: hsl(var(--text-primary));
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: hsl(var(--text-secondary));
}

.input-custom {
  background-color: rgba(11, 13, 17, 0.4);
  border: 1px solid var(--border-color);
  color: hsl(var(--text-primary));
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  font-family: var(--font-family);
  outline: none;
  font-size: 15px;
  transition: var(--transition-smooth);
}

.input-custom:focus {
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 3px var(--primary-glow);
  background-color: rgba(11, 13, 17, 0.7);
}

/* Switch / Checkbox Premium */
.switch-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: rgba(11, 13, 17, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-bottom: 20px;
}

.switch-label-wrapper {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.switch-label-title {
  font-size: 14px;
  font-weight: 500;
}

.switch-label-desc {
  font-size: 12px;
  color: hsl(var(--text-muted));
}

.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: hsl(var(--bg-card));
  border: 1px solid var(--border-color);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background-color: hsl(var(--text-secondary));
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: hsl(var(--primary));
  border-color: hsl(var(--primary));
}

input:checked + .slider:before {
  transform: translateX(24px);
  background-color: white;
}

/* Botones */
.btn {
  font-family: var(--font-family);
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  outline: none;
  border: none;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, hsl(var(--primary)), #4f46e5);
  color: white;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background-color: hsl(var(--bg-card));
  color: hsl(var(--text-primary));
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

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

.btn-danger:hover {
  background-color: #dc2626;
}

/* ============================================================================
   TABLAS Y LISTADOS
   ============================================================================ */

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
}

.table-custom {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.table-custom th {
  background-color: rgba(19, 23, 32, 0.8);
  color: hsl(var(--text-secondary));
  font-weight: 600;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.table-custom td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  color: hsl(var(--text-primary));
}

.table-custom tbody tr {
  transition: var(--transition-smooth);
}

.table-custom tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Badges de Estado */
.badge {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-pending { background-color: var(--warning-glow); color: hsl(var(--warning)); }
.badge-paid { background-color: var(--success-glow); color: hsl(var(--success)); }
.badge-partial { background-color: var(--primary-glow); color: hsl(var(--primary)); }
.badge-overdue { background-color: var(--danger-glow); color: hsl(var(--danger)); }

/* ============================================================================
   SECTOR COBRANZA Y CAJAS
   ============================================================================ */

.box-action-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  margin-bottom: 32px;
}

.box-status-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  animation: pulse 1.5s infinite;
}

.status-dot.open { background-color: hsl(var(--success)); box-shadow: 0 0 10px hsl(var(--success)); }
.status-dot.closed { background-color: hsl(var(--danger)); box-shadow: 0 0 10px hsl(var(--danger)); animation: none; }

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.box-cash-detail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.cash-sub-card {
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  border-radius: var(--border-radius-md);
}

.cash-sub-card h5 {
  font-size: 13px;
  color: hsl(var(--text-secondary));
  margin-bottom: 8px;
}

.cash-sub-card p {
  font-size: 22px;
  font-weight: 700;
}

/* Buscador e Instalments interactivos */
.search-container {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.search-container .input-custom {
  flex-grow: 1;
}

.customer-detail-section {
  animation: fadeIn 0.3s ease;
}

.customer-info-row {
  display: flex;
  gap: 40px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.info-item span:first-child {
  font-size: 12px;
  color: hsl(var(--text-muted));
}

.info-item span:last-child {
  font-size: 15px;
  font-weight: 600;
}

/* Cuotas grid interactiva */
.installments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.installment-tile {
  background-color: hsl(var(--bg-card));
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 16px;
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
}

.installment-tile:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

.installment-tile.paid {
  border-color: hsl(var(--success));
  background-color: var(--success-glow);
  cursor: default;
}

.installment-tile.partial {
  border-color: hsl(var(--primary));
  background-color: var(--primary-glow);
}

.installment-tile.overdue {
  border-color: hsl(var(--danger));
  background-color: var(--danger-glow);
}

.tile-number {
  font-size: 13px;
  font-weight: 700;
  color: hsl(var(--text-secondary));
  margin-bottom: 8px;
}

.tile-date {
  font-size: 12px;
  color: hsl(var(--text-muted));
  margin-bottom: 12px;
}

.tile-amount {
  font-size: 16px;
  font-weight: 700;
}

.tile-pending {
  font-size: 12px;
  color: hsl(var(--text-muted));
  margin-top: 4px;
}

/* ============================================================================
   MODALES Y POPUPS
   ============================================================================ */

.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(11, 13, 17, 0.85);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.modal-container {
  background-color: hsl(var(--bg-card));
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  width: 500px;
  max-width: 90%;
  padding: 32px;
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: hsl(var(--text-secondary));
  font-size: 20px;
  cursor: pointer;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  margin-top: 32px;
}

/* Previsualización del cronograma en el Creador de Préstamos */
.preview-container {
  max-height: 480px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-top: 12px;
}

/* ============================================================================
   PANTALLA DE LOGIN PREMIUM
   ============================================================================ */

.login-screen-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 50% 50%, #17162e 0%, #06070a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  overflow-y: auto;
}

.login-card {
  background: rgba(19, 23, 32, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  width: 440px;
  max-width: 100%;
  padding: 40px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
  animation: fadeIn 0.5s ease-out;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, hsl(var(--primary)), #4f46e5);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 800;
  margin: 0 auto 16px auto;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  letter-spacing: -1px;
}

.login-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: hsl(var(--text-primary));
  margin-bottom: 8px;
}

.login-header p {
  font-size: 14px;
  color: hsl(var(--text-muted));
}

.login-error {
  background-color: var(--danger-glow);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  margin-bottom: 24px;
  font-size: 14px;
  text-align: center;
  font-weight: 500;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* Botón de logout en sidebar footer */
.btn-logout-sidebar {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: hsl(var(--text-secondary));
  width: 38px;
  height: 38px;
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-logout-sidebar:hover {
  background-color: var(--danger-glow);
  border-color: hsl(var(--danger));
  color: #ef4444;
  transform: scale(1.05);
}