/* ==========================================================================
   SISTEMA DE DISEÑO PREMIUM - CONTROL DE PRÉSTAMOS PWA
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  /* Paleta de Colores Finanzas Nocturnas */
  --bg-main: #0b0f19;
  --bg-card: rgba(21, 30, 48, 0.75);
  --bg-card-hover: rgba(30, 43, 67, 0.85);
  --bg-input: #172033;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #10b981;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent Colors */
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-teal: #14b8a6;
  --accent-blue: #3b82f6;
  --accent-amber: #f59e0b;
  --accent-rose: #ef4444;

  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-glow: 0 0 25px rgba(16, 185, 129, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --glass-blur: blur(16px);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset y Bases */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Fondo dinámico de gradiente abstracto */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  pointer-events: none;
  z-index: -1;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
  pointer-events: none;
  z-index: -1;
}

/* Pantalla de Inicio de Sesión (Auth Screen) */
.auth-container {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  overflow-y: auto;
}

.auth-card {
  background: rgba(30, 41, 59, 0.75);
  backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(16, 185, 129, 0.15);
  animation: fadeIn 0.4s ease-out;
}

/* Header Navbar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-emerald), var(--accent-teal));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-glow);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.status-dot.online {
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

/* Botones */
.btn {
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-emerald), #059669);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
}

.btn-whatsapp:hover {
  background: #1eb956;
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Layout Principal */
.app-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  flex: 1;
  padding-bottom: 5rem; /* espacio para barra de navegación móvil */
}

/* Secciones / Vistas (Tabs) */
.view-section {
  display: none;
  animation: fadeIn var(--transition-normal);
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Grid de Métricas KPI */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.kpi-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast);
}

.kpi-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-emerald);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.25);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.kpi-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.kpi-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.kpi-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.kpi-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.kpi-icon.rose { background: rgba(239, 68, 68, 0.15); color: var(--accent-rose); }

.kpi-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Tarjetas y Listas */
.card-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
}

.search-filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  width: 100%;
  margin-bottom: 1.5rem;
}

.input-search {
  flex: 1;
  min-width: 220px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-main);
}

.input-search:focus {
  outline: none;
  border-color: var(--border-focus);
}

.loan-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.loan-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition-fast);
}

.loan-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
}

.loan-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.client-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
}

.loan-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Badges */
.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.badge-success { background: rgba(16, 185, 129, 0.18); color: #34d399; }
.badge-danger { background: rgba(239, 68, 68, 0.18); color: #f87171; }
.badge-info { background: rgba(59, 130, 246, 0.18); color: #60a5fa; }

/* Barra de progreso de préstamo */
.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(to right, var(--accent-emerald), var(--accent-teal));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* Tablas */
.table-container {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th, td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Modales */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #131b2e;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.75rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

/* Formularios */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.9rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 600px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Barra de Navegación Inferior (Móvil / PWA Dock) */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(11, 15, 25, 0.92);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
  z-index: 90;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 600;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast);
}

.nav-item-icon {
  font-size: 1.3rem;
}

.nav-item.active {
  color: var(--accent-emerald);
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none;
  }

  .desktop-nav-inline {
    display: flex;
    gap: 1rem;
    margin-left: 2rem;
  }
}

/* Estilos de Impresión (PDF / Papel) */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .app-header, .mobile-nav, .search-filter-bar, .modal-header, .btn {
    display: none !important;
  }
  .modal-overlay {
    position: static !important;
    background: transparent !important;
    opacity: 1 !important;
    pointer-events: auto !important;
  }
  .modal-content {
    background: #ffffff !important;
    border: none !important;
    box-shadow: none !important;
    color: #000000 !important;
    max-width: 100% !important;
    padding: 0 !important;
  }
  #dailyReportPrintArea {
    background: #ffffff !important;
    border: 1px solid #000000 !important;
    color: #000000 !important;
    padding: 1rem !important;
  }
  #reportHeaderTitle {
    color: #000000 !important;
  }
  #reportTotalEsperado {
    color: #000000 !important;
  }
  th, td {
    color: #000000 !important;
    border-bottom: 1px solid #cccccc !important;
  }
}