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

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  font-family: "Inter", sans-serif;
}

.form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25);
  transition: all 0.3s ease;
}

.form-control.is-invalid {
  border-color: #dc3545;
  background-image: none;
  animation: shake 0.5s ease-in-out;
}

.form-control.is-valid {
  border-color: #28a745;
  background-image: none;
}

.form-control.checking {
  border-color: #ffc107;
  background-image: none;
}

@keyframes shake {
  0%,
  20%,
  40%,
  60%,
  80% {
    transform: translateX(0);
  }
  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translateX(-5px);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.card {
  border: none;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  overflow: hidden;
}

.section-title {
  color: #667eea;
  border-bottom: 3px solid #667eea;
  padding-bottom: 0.5rem;
  position: relative;
  overflow: hidden;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 2px;
}

.form-label {
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 0.5rem;
}

.form-control {
  border-radius: 12px;
  border: 2px solid #e2e8f0;
  padding: 0.75rem 1rem;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.btn-success {
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  border: none;
  border-radius: 12px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(72, 187, 120, 0.3);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(72, 187, 120, 0.4);
}

.invalid-feedback,
.valid-feedback,
.warning-feedback {
  display: none;
  margin-top: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.form-control.is-invalid ~ .invalid-feedback {
  display: block;
}

.form-control.is-valid ~ .valid-feedback {
  display: block;
}

.form-control.checking ~ .warning-feedback {
  display: block;
}

.invalid-feedback {
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
  border-left: 3px solid #dc3545;
}

.valid-feedback {
  background: rgba(40, 167, 69, 0.1);
  color: #28a745;
  border-left: 3px solid #28a745;
}

.warning-feedback {
  background: rgba(255, 193, 7, 0.1);
  color: #ffc107;
  border-left: 3px solid #ffc107;
}

.field-icon {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  pointer-events: none;
}

.field-wrapper {
  position: relative;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.dni-status {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.dni-status.show {
  opacity: 1;
  transform: translateY(0);
}

.dni-status.exists {
  background: rgba(255, 193, 7, 0.1);
  color: #e67e22;
  border-left: 3px solid #e67e22;
}

.dni-status.available {
  background: rgba(40, 167, 69, 0.1);
  color: #28a745;
  border-left: 3px solid #28a745;
}

.dni-status.error {
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
  border-left: 3px solid #dc3545;
}

.main-title {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  margin-bottom: 2rem;
}

/* =========================
   OPTIMIZACIONES MÓVILES
========================= */

/* Contenedor principal responsivo */
.container {
  padding-left: 1rem !important;
  padding-right: 1rem !important;
}

/* Espaciado vertical optimizado para móvil */
.py-5 {
  padding-top: 2rem !important;
  padding-bottom: 2rem !important;
}

/* Card adaptable */
.card {
  margin: 0.5rem 0;
  padding: 1.5rem !important;
}

/* Formulario optimizado para móvil */
.row.g-3 {
  --bs-gutter-x: 1rem;
  --bs-gutter-y: 1rem;
}

/* Campos de formulario móvil-first */
.form-control {
  font-size: 16px; /* Previene zoom en iOS */
  min-height: 48px; /* Tamaño táctil recomendado */
  padding: 0.75rem 1rem;
}

/* Labels más legibles en móvil */
.form-label {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #2d3748;
}

/* Botón principal optimizado para táctil */
.btn-success {
  min-height: 48px;
  font-size: 1rem;
  padding: 0.875rem 2.5rem;
  width: 100%;
  margin-top: 1rem;
}

/* Iconos de estado más grandes para móvil */
.field-icon {
  right: 12px;
  font-size: 1.2rem;
}

/* Feedback más visible en móvil */
.invalid-feedback,
.valid-feedback,
.warning-feedback {
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  border-radius: 8px;
}

/* Estado DNI más compacto */
.dni-status {
  font-size: 0.85rem;
  padding: 0.6rem 0.875rem;
  margin-top: 0.6rem;
}

/* Título de sección más compacto */
.section-title {
  font-size: 1.25rem;
  margin-bottom: 1.5rem !important;
  margin-top: 2rem !important;
}

/* =========================
   MEDIA QUERIES MÓVILES
========================= */

/* Dispositivos pequeños (phones, 576px y menos) */
@media (max-width: 575.98px) {
  body {
    font-size: 14px;
  }

  .container {
    padding-left: 0.75rem !important;
    padding-right: 0.75rem !important;
  }

  .card {
    border-radius: 15px;
    margin: 0.25rem 0;
    padding: 1.25rem !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }

  .py-5 {
    padding-top: 1.5rem !important;
    padding-bottom: 1.5rem !important;
  }

  .section-title {
    font-size: 1.1rem;
    margin-bottom: 1.25rem !important;
    margin-top: 1.75rem !important;
  }

  .form-control {
    font-size: 16px; /* Importante para iOS */
    padding: 0.875rem 1rem;
    border-radius: 10px;
  }

  .form-label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }

  .btn-success {
    font-size: 0.95rem;
    padding: 1rem 2rem;
    border-radius: 10px;
    margin-top: 1.5rem;
  }

  .field-wrapper {
    margin-bottom: 0.5rem;
  }

  .invalid-feedback,
  .valid-feedback,
  .warning-feedback {
    font-size: 0.8rem;
    padding: 0.6rem 0.875rem;
    margin-top: 0.5rem;
  }

  .dni-status {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    margin-top: 0.5rem;
  }

  /* Spinner más pequeño en móvil */
  .loading-spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
  }
}

/* Dispositivos muy pequeños (phones en landscape, menos de 480px) */
@media (max-width: 479.98px) {
  .container {
    padding-left: 0.5rem !important;
    padding-right: 0.5rem !important;
  }

  .card {
    padding: 1rem !important;
    border-radius: 12px;
  }

  .section-title {
    font-size: 1rem;
    text-align: center;
  }

  .form-control {
    padding: 0.75rem 0.875rem;
    font-size: 15px;
  }

  .btn-success {
    font-size: 0.9rem;
    padding: 0.875rem 1.5rem;
  }

  .row.g-3 {
    --bs-gutter-x: 0.75rem;
    --bs-gutter-y: 0.75rem;
  }
}

/* Optimizaciones táctiles */
@media (hover: none) and (pointer: coarse) {
  /* Dispositivos táctiles */
  .form-control:focus {
    transform: scale(1.02);
    transition: transform 0.2s ease;
  }

  .btn-success:active {
    transform: scale(0.98);
  }

  /* Área táctil más grande para iconos */
  .field-icon {
    padding: 8px;
    margin: -8px;
  }
}

/* Orientación landscape en móviles */
@media screen and (max-height: 500px) and (orientation: landscape) {
  .py-5 {
    padding-top: 1rem !important;
    padding-bottom: 1rem !important;
  }

  .section-title {
    margin-top: 1rem !important;
    margin-bottom: 1rem !important;
    font-size: 1rem;
  }

  .card {
    padding: 1rem !important;
  }

  .form-control {
    padding: 0.6rem 0.875rem;
    min-height: 40px;
  }

  .btn-success {
    padding: 0.6rem 2rem;
    margin-top: 1rem;
  }
}

/* Animaciones reducidas para dispositivos que lo prefieran */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .form-control.is-invalid {
    animation: none;
  }
}