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

:root {
  --primary-color: #d11118;
  --primary-hover: #b10e15;
  --primary-light: rgba(209, 17, 24, 0.1);
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;

  --text-primary: #2c3e50;
  --text-secondary: #6c757d;
  --text-muted: #95a5a6;

  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-light: #f1f3f4;

  --border-color: #e9ecef;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  --transition: all 0.3s ease;
}

/* Estilos base */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

/* Contenedor principal */
.login-container {
  min-height: 100vh;
  display: flex;
  background: var(--bg-primary);
}

/* Sección promocional */
.promo-section {
  display: none;
  position: relative;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .promo-section {
    display: flex;
    width: 50%;
  }
}

.promo-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.promo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, rgba(209, 17, 24, 0.8) 100%);
  z-index: 1;
}

.promo-content {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  color: white;
  z-index: 2;
}

.promo-content h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.promo-content p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.stats {
  display: flex;
  gap: 1.5rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

/* Sección de formularios */
.form-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

@media (min-width: 1024px) {
  .form-section {
    padding: 2rem;
  }
}

/* Tarjeta de formulario */
.form-card {
  display: none;
  width: 100%;
  max-width: 28rem;
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.form-card.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

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

/* Header de la tarjeta */
.card-header {
  padding: 2rem 2rem 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.back-btn {
  display: flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  margin-bottom: 1rem;
  padding: 0.5rem 0;
  transition: var(--transition);
  text-align: left;
}

.back-btn:hover {
  color: var(--text-primary);
}

.back-btn i {
  margin-right: 0.5rem;
}

.brand-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.form-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-description {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.icon-container {
  margin-bottom: 1rem;
}

.icon-large {
  font-size: 3rem;
  color: var(--primary-color);
}

.icon-container.success .icon-large {
  color: var(--success-color);
}

/* Toggle de método de login */
.login-method-toggle {
  display: flex;
  background: var(--bg-light);
  border-radius: var(--border-radius);
  padding: 0.25rem;
  margin: 1.5rem 2rem;
}

.toggle-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-radius: calc(var(--border-radius) - 2px);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-btn.active {
  background: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-sm);
}

.toggle-btn i {
  margin-right: 0.5rem;
}

/* Formularios */
.form {
  padding: 0 2rem 2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

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

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
}

.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  background: var(--bg-primary);
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input:disabled {
  background: var(--bg-light);
  color: var(--text-muted);
  cursor: not-allowed;
}

.form-help {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Input de contraseña */
.password-input {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  padding: 0 1rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.password-toggle:hover {
  color: var(--text-primary);
}

/* Input de código */
.code-input {
  text-align: center;
  font-size: var(--font-size-lg);
  letter-spacing: 0.5rem;
  font-weight: 600;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover:not(:disabled) {
  background: var(--bg-light);
  border-color: var(--text-secondary);
}

.btn-loading {
  display: none;
}

.btn.loading .btn-text {
  display: none;
}

.btn.loading .btn-loading {
  display: inline-flex;
  align-items: center;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary-color);
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  padding: 0;
}

.link-btn:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Opciones de recuperación */
.recovery-options {
  padding: 0 2rem 2rem;
}

.recovery-option {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.recovery-option:hover {
  border-color: var(--primary-color);
  background: var(--primary-light);
}

.recovery-option i {
  font-size: 1.25rem;
  color: var(--primary-color);
  margin-right: 1rem;
  width: 1.5rem;
  text-align: center;
}

.option-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.option-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Separador */
.separator {
  position: relative;
  text-align: center;
  margin: 1.5rem 2rem;
}

.separator::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
}

.separator span {
  background: var(--bg-primary);
  color: var(--text-muted);
  padding: 0 1rem;
  font-size: var(--font-size-sm);
}

/* Temporizador */
.timer {
  margin-top: 0.75rem;
  font-size: var(--font-size-sm);
}

.timer .timer-label {
  color: var(--text-secondary);
}

.timer .timer-value {
  font-weight: 600;
  color: var(--primary-color);
}

.expired-message {
  margin-top: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--danger-color);
  font-weight: 500;
}

/* Utilidades */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.w-full {
  width: 100%;
}

/* Responsive */
@media (max-width: 640px) {
  .form-card {
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    border: none;
    min-height: 100vh;
  }

  .card-header {
    padding: 1.5rem 1.5rem 1rem;
  }

  .form {
    padding: 0 1.5rem 1.5rem;
  }

  .login-method-toggle {
    margin: 1rem 1.5rem;
  }

  .recovery-options {
    padding: 0 1.5rem 1.5rem;
  }

  .separator {
    margin: 1.5rem 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Animaciones adicionales */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.fa-spin {
  animation: spin 1s linear infinite;
}

/* Estados de hover mejorados */
.form-group input:hover:not(:disabled) {
  border-color: var(--text-secondary);
}

.toggle-btn:hover:not(.active) {
  background: rgba(255, 255, 255, 0.5);
  color: var(--text-primary);
}

/* Mejoras de accesibilidad */
.btn:focus,
.form-group input:focus,
.toggle-btn:focus,
.link-btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Estilos para pantallas grandes */
@media (min-width: 1200px) {
  .form-card {
    max-width: 32rem;
  }

  .card-header {
    padding: 2.5rem 2.5rem 2rem;
  }

  .form {
    padding: 0 2.5rem 2.5rem;
  }
}