:root {
  --primary: #7c3aed;
  --primary-hover: #6d28d9;
  --bg-main: #f9fafb;
  --bg-sidebar: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --danger: #ef4444;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  overflow-x: hidden;
}

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

.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.logo h2 {
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 2.5rem;
  letter-spacing: -0.025em;
}

.nav-menu { display: flex; flex-direction: column; gap: 0.5rem; }

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-link:hover, .nav-link.active {
  background-color: #f3f4f6;
  color: var(--primary);
}

.main-content { flex: 1; display: flex; flex-direction: column; }

.top-bar {
  padding: 1.25rem 2rem;
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.user-profile-dropdown {
  position: relative;
  cursor: pointer;
}

.profile-trigger {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
  user-select: none; /* Evita que el texto se seleccione al hacer clic */
}

.profile-trigger:hover {
  background-color: #f3f4f6;
}

.dropdown-arrow {
  font-size: 0.6rem;
  color: var(--text-muted);
}

.dropdown-content {
  visibility: hidden; /* Usamos visibility en lugar de display para transiciones */
  position: absolute;
  top: 100%;
  right: 0;
  background-color: #ffffff;
  min-width: 180px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  z-index: 1002;
  margin-top: 0.5rem;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.2s ease-out, transform 0.2s ease-out, visibility 0.2s;
}

.dropdown-content.show {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.dropdown-item {
  width: 100%;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: none;
  background: none;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.dropdown-item:hover {
  background-color: #fee2e2;
  color: var(--danger);
}

.view-container { padding: 2rem; }

/* Cards Dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* Gráficos Dashboard */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.dashboard-header {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

.card {
  background: #fff;
  padding: 1.2rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card canvas {
  max-height: 250px; /* Reducimos el tamaño visual de los gráficos */
}

.card h3 { font-size: 0.875rem; color: var(--text-muted); text-transform: uppercase; }
.card .value { font-size: 1.875rem; font-weight: 700; margin-top: 0.5rem; }
.card.balance .value { color: var(--primary); }

/* Tablas y Forms */
.table-container {
  background: #fff;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

table { width: 100%; border-collapse: collapse; text-align: left; }
th { background: #f9fafb; padding: 1rem; font-weight: 600; font-size: 0.875rem; color: var(--text-muted); }
td { padding: 1rem; border-top: 1px solid var(--border); }

.btn {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
}

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

form { display: flex; flex-direction: column; gap: 1rem; max-width: 650px; margin-bottom: 2rem; }

.modern-form .form-row {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 0.5rem;
}

.modern-form .form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.modern-form label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
}

@media (max-width: 600px) {
  .modern-form .form-row {
    flex-direction: column;
    gap: 1rem;
  }
}

input, select, textarea {
  padding: 0.625rem;
  border: 1px solid var(--border);
  border-radius: 0.375rem;
  font-family: inherit;
}

@media (max-width: 768px) {
  .app-container { flex-direction: column; }
  .sidebar { width: 100%; padding: 1rem; }
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
}

.modal.active { display: flex; }

.modal-content {
  background: #fff;
  padding: 2.5rem;
  border-radius: 0.75rem;
  width: 95%;
  max-width: 500px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.close-btn { position: absolute; top: 1.25rem; right: 1.25rem; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); }
.modal-content h2 { margin-bottom: 1.5rem; }

.badge { padding: 0.25rem 0.5rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 700; color: #fff; }
.badge.ingreso { background: var(--success); }
.badge.gasto { background: var(--danger); }
.badge.system { background: var(--primary); }
.badge.personal { background: var(--text-muted); }

.btn-small { padding: 0.25rem 0.5rem; font-size: 0.875rem; }

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background-color: #333;
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transform: translateY(20px);
  animation: fadein 0.5s forwards, fadeout 0.5s 2.5s forwards;
  min-width: 250px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.success { background-color: var(--success); }
.toast.error { background-color: var(--danger); }
.toast.info { background-color: var(--primary); }

.toast .icon {
  font-size: 1.2em;
}

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

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

/* Responsive adjustments for toast */
@media (max-width: 600px) {
  #toast-container {
    bottom: 10px;
    right: 10px;
    left: 10px;
    align-items: center;
  }
  .toast {
    width: 100%;
    max-width: none;
  }
}

/* Estilos para el Registro Rápido (Wizard) */
.wizard-step { 
  text-align: center;
  animation: wizardStepIn 0.35s ease-out;
}

@keyframes wizardStepIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.wizard-step h2 { margin-bottom: 2rem; color: var(--primary); }
.wizard-options { display: flex; gap: 1rem; justify-content: center; }
.btn-lg { padding: 1.5rem 2rem; font-size: 1.25rem; flex: 1; }
.wizard-nav { display: flex; justify-content: space-between; margin-top: 2rem; gap: 1rem; }
.wizard-nav .btn { flex: 1; }
.wizard-step select, .wizard-step input { 
  width: 100%; font-size: 1.25rem; padding: 1rem; text-align: center; 
  border: 1px solid var(--border); border-radius: 0.5rem;
}

.wizard-progress-container {
  width: 100%;
  height: 8px;
  background-color: var(--border);
  border-radius: 4px;
  margin-bottom: 2rem;
  overflow: hidden;
}

.wizard-progress-bar {
  height: 100%;
  background-color: var(--primary);
  transition: width 0.3s ease;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.spinner {
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Modernización de Autenticación */
body:not(.is-logged-in) .sidebar,
body:not(.is-logged-in) .top-bar {
  display: none;
}

body:not(.is-logged-in) .main-content {
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
  height: 100vh;
  width: 100vw;
}

body:not(.is-logged-in) .view-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  min-height: 100vh;
}

.auth-card {
  background: #ffffff;
  padding: 3rem 2.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  width: 100%;
  max-width: 440px;
  border: 1px solid var(--border);
}

.animate-in { animation: wizardStepIn 0.5s ease-out; }

.auth-card h2 {
  color: var(--text-main);
  font-size: 2.25rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.05em;
}

.auth-card p {
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 2.5rem;
  font-size: 1rem;
  line-height: 1.5;
}

.auth-form .form-group {
  margin-bottom: 1.5rem;
}

.auth-form label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.auth-submit {
  width: 100%;
  margin-top: 1rem;
  padding: 0.9rem !important;
  font-size: 1rem;
}

.password-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.btn-toggle-pass {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0;
}

.auth-form input {
  width: 100%;
  padding: 0.875rem 1.25rem;
  padding-right: 3rem; /* Espacio para el icono de ojo */
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background-color: var(--bg-main);
  transition: all 0.2s;
  font-size: 1rem;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15);
  background-color: #fff;
}

.auth-footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s;
}

.auth-footer a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Estados de Validación Visual */
.auth-form input.is-valid {
  border-color: var(--success);
}

.auth-form input.is-valid:focus {
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
}

.auth-form input.is-invalid {
  border-color: var(--danger);
}

.auth-form input.is-invalid:focus {
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

/* Medidor de Fuerza de Contraseña */
.password-strength-meter {
  height: 6px;
  background-color: var(--border);
  border-radius: 3px;
  margin-top: 8px;
  overflow: hidden;
}

.strength-bar {
  height: 100%;
  width: 0;
  transition: all 0.3s ease;
}

.strength-bar.weak { background-color: var(--danger); }
.strength-bar.medium { background-color: #fbbf24; } /* Ambar */
.strength-bar.strong { background-color: var(--success); }

.strength-text {
  font-size: 0.75rem;
  margin-top: 4px;
  font-weight: 600;
  text-align: right;
}

.text-weak { color: var(--danger); }
.text-medium { color: #d97706; } /* Naranja oscuro para legibilidad */
.text-strong { color: var(--success); }