/* Login CSS - Diseño moderno inspirado en las mejores prácticas de UI/UX */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* Colores consistentes con el dashboard */
  --color-primary: #6366F1;
  --color-primary-light: #818CF8;
  --color-primary-dark: #4F46E5;
  --color-secondary: #8B5CF6;
  --color-accent-success: #10B981;
  --color-accent-warning: #F59E0B;
  --color-accent-danger: #EF4444;
  
  /* Backgrounds */
  --color-bg-primary: #FAFBFC;
  --color-bg-secondary: #FFFFFF;
  
  /* Gradientes modernos */
  --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  --gradient-background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Texto */
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-text-inverse: #F9FAFB;
  
  /* Sombras profesionales */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Radios */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Animaciones */
  --transition-normal: 0.2s ease;
}

/* Reset y base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background: linear-gradient(-45deg, #F8F9FB 0%, #EEF2FF 40%, rgba(99,102,241,0.06) 100%);
  background-size: 400% 400%;
  position: relative;
  min-height: 100vh;
  -webkit-overflow-scrolling: touch;
}

/* Overlay pattern decorativo */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

/* Container principal */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  position: relative;
  z-index: 2;
}

/* Tarjeta de login principal */
.login-card {
  background: #FFFFFF;
  border: 1px solid rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-2xl);
  box-shadow: 
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 
    0 10px 10px -5px rgba(0, 0, 0, 0.04),
    0 0 0 1px rgba(99, 102, 241, 0.05);
  padding: 2rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  max-height: calc(100vh - 100px);
  overflow: visible;
  backdrop-filter: blur(8px);
  animation: fadeInUp 0.6s ease;
}

/* Header del login */
.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.05);
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.04));
}

.login-logo img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
}

/* Cuando existe imagen, quitar degradado fuerte y centrar con fondo neutro */
.login-logo.has-image {
  background: rgba(255,255,255,0.65);
}
.login-logo.has-image img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 6px;
}

.login-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.login-subtitle {
  font-size: 0.98rem;
  color: #4b5563;
  font-weight: 500;
}

/* Formulario */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Grupos de campos */
.form-group {
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.5rem;
  letter-spacing: 0.025em;
}

/* Inputs modernos */
.form-input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  border: 2px solid #E5E7EB;
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  font-size: 1rem;
  font-weight: 400;
  color: #111827;
  transition: all var(--transition-normal);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.form-input:focus {
  outline: none;
  border-color: #6366F1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: #FFFFFF;
  transform: translateY(-1px);
}

.form-input::placeholder {
  color: #9CA3AF;
  font-weight: 400;
}

/* Íconos de los inputs */
.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  color: #6b7280;
  transition: color var(--transition-normal);
  pointer-events: none;
  z-index: 1;
}

.form-input:focus + .input-icon {
  color: var(--color-primary);
}

/* Botón principal */
.login-button {
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 
    0 4px 6px -1px rgba(99, 102, 241, 0.3), 
    0 2px 4px -1px rgba(99, 102, 241, 0.2);
  position: relative;
  overflow: hidden;
}

.login-button:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 10px 15px -3px rgba(99, 102, 241, 0.4), 
    0 4px 6px -2px rgba(99, 102, 241, 0.3);
}

.login-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Efecto de ondas en el botón */
.login-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.login-button:active::before {
  width: 300px;
  height: 300px;
}

/* Estado de carga del botón */
.login-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.login-button.loading {
  color: transparent;
}

.login-button.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Toggle password button */
.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #9ca3af;
  z-index: 2;
}

/* Mensajes de error y éxito */
.alert {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  border: 1px solid transparent;
  animation: slideInDown 0.3s ease;
}

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

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: #DC2626;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: #059669;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: #D97706;
}

/* Footer del login */
.login-footer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Responsive design */
@media (max-width: 640px) {
  .login-container {
    padding: 1rem;
  }
  
  .login-card {
    padding: 1.5rem;
    margin: 1rem;
  }
  
  .login-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 1.25rem;
  }
  
  .login-title {
    font-size: 1.375rem;
  }
  
  .form-input {
    padding: 0.75rem 0.875rem 0.75rem 2.5rem;
  }
  
  .input-icon {
    left: 0.875rem;
    width: 1rem;
    height: 1rem;
  }
}

/* Animaciones de entrada */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Estados de validación */
.form-input.error {
  border-color: var(--color-accent-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
  background: rgba(255, 255, 255, 1);
}

.form-input.success {
  border-color: var(--color-accent-success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
  background: rgba(255, 255, 255, 1);
}

/* Modal de carga premium */
.modal-loading-bg {
  display: none;
  position: fixed;
  z-index: 9999;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background: linear-gradient(120deg, rgba(99,102,241,0.18) 0%, rgba(236,72,153,0.10) 100%);
  backdrop-filter: blur(3.5px) saturate(1.2);
  animation: fadeInBg 0.4s;
}

.modal-loading-bg.show { 
  display: block; 
  animation: fadeInBg 0.4s; 
}

@keyframes fadeInBg { 
  from { opacity: 0; } 
  to { opacity: 1; } 
}

.modal-loading-card {
  position: absolute;
  top: 50%; left: 50%; transform: translate(-50%,-50%) scale(0.98);
  background: rgba(255,255,255,0.98);
  border-radius: 1.5rem;
  box-shadow: 0 8px 32px rgba(99,102,241,0.13), 0 1.5px 8px rgba(0,0,0,0.07);
  padding: 2.7rem 2.7rem 2.1rem 2.7rem;
  min-width: 320px;
  display: flex; flex-direction: column; align-items: center;
  animation: popInCard 0.45s cubic-bezier(.23,1.12,.32,1);
}

@keyframes popInCard {
  0% { opacity: 0; transform: translate(-50%,-60%) scale(0.92); }
  100% { opacity: 1; transform: translate(-50%,-50%) scale(1); }
}

.modal-loading-spinner {
  width: 3.2rem; height: 3.2rem;
  border: 4px solid #e0e7ff;
  border-top: 4px solid #6366f1;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1.3rem;
}

.modal-loading-text {
  color: #3730a3;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  text-align: center;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  text-shadow: 0 1px 8px #e0e7ff;
}

@media (max-width: 480px) {
  .modal-loading-card {
    min-width: 280px;
    padding: 2rem;
  }
  
  .modal-loading-text {
    font-size: 1.1rem;
  }
}

/* Contenedor para alertas flotantes */
.alert-wrapper {
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  z-index: 9999;
  pointer-events: none;
}

/* Alerta flotante */
.floating-alert {
  position: relative;
  max-width: 90%;
  width: 400px;
  padding: 0.875rem 2.5rem 0.875rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0;
  border: 1px solid transparent;
  animation: slideInDown 0.5s ease, fadeOutUp 0.5s ease 4.5s forwards;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  opacity: 0.95;
}

.floating-alert:hover {
  opacity: 1;
}

/* Botón de cerrar alerta */
.alert-close {
  position: absolute;
  top: 50%;
  right: 0.75rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  color: inherit;
  opacity: 0.7;
}

.alert-close:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.05);
}

/* Animaciones para alertas */
@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 0.95;
    transform: translateY(0);
  }
}

@keyframes fadeOutUp {
  from {
    opacity: 0.95;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-30px);
    visibility: hidden;
  }
}