:root {
  --primary: #10b1c5;
  --primary-dark: #0d8fa3;
  --secondary: #10b981;
  --accent: #f59e0b;
  --background: #ffffff;
  --surface: #f8fafc;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
  --error: #ef4444;
  --success: #10b981;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.login-container {
  background: white;
  border-radius: 1rem;
  box-shadow: 0 20px 60px var(--shadow-lg);
  max-width: 400px;
  width: 100%;
  padding: 2rem;
}

.logo {
  text-align: center;
  margin-bottom: 2rem;
}

.logo i {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.logo h1 {
  color: var(--text);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.logo p {
  color: var(--text-light);
  font-size: 0.9rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  color: var(--text);
  font-weight: 500;
  font-size: 0.875rem;
}

input,
select {
  padding: 0.625rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(16, 177, 197, 0.1);
}

button {
  padding: 0.75rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  width: 100%;
}

button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 177, 197, 0.3);
}

.message {
  padding: 0.75rem;
  border-radius: 0.5rem;
  text-align: center;
  font-weight: 500;
  font-size: 0.875rem;
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid var(--success);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border: 1px solid var(--error);
}

.register-link {
  text-align: center;
  margin-top: 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.register-link button {
  background: none;
  color: var(--primary);
  padding: 0;
  font-weight: 600;
  text-decoration: underline;
  width: auto;
  display: inline;
}

.register-link button:hover {
  transform: none;
  box-shadow: none;
  color: var(--primary-dark);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  overflow: hidden;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: 1rem;
  padding: 1.5rem;
  width: 100%;
  max-width: 500px;
  /* Altura reducida y sin scroll para caber en la pantalla */
  max-height: 90vh; 
  box-shadow: 0 20px 60px var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden; 
  overflow-y: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-header h2 {
  color: var(--text);
  font-size: 1.25rem;
}

.close-modal {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  padding: 0;
  width: auto;
}

.close-modal:hover {
  color: var(--error);
  transform: rotate(90deg);
}

/* Step Indicator */
.step-indicator {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  position: relative;
  flex-shrink: 0;
}

.step-indicator::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: white;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--text-light);
  transition: all 0.3s ease;
}

.step.active .step-number,
.step.completed .step-number {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.step.completed .step-number {
  background: var(--secondary);
  border-color: var(--secondary);
}

.step-label {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: center;
  font-weight: 500;
}

.step.active .step-label {
  color: var(--primary);
  font-weight: 600;
}

/* Form Sections Container */
.form-sections-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem; 
  flex: 1;
  overflow: hidden;
  /* Permitir scroll SOLO A ESTE CONTENEDOR si el contenido es demasiado alto, para no cortar contenido. */
  overflow-y: auto; 
  padding-right: 5px; 
}

.form-section {
  display: none;
  flex-direction: column;
  gap: 0.6rem;
}

.form-section.active {
  display: flex;
}

.section-title {
  color: var(--text);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: none;
}

/* Mobile Navigation Buttons */
.mobile-nav-buttons {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-shrink: 0;
}

.nav-btn {
  flex: 1;
  padding: 0.625rem;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.prev-btn {
  background: var(--surface);
  color: var(--text);
}

.prev-btn:hover {
  background: var(--border);
}

.prev-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#submitBtn {
  margin-top: 1rem;
  flex-shrink: 0;
}

/* Toggle Button */
.toggle-btn {
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--primary);
  padding: 0.75rem;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.toggle-btn:hover {
  transform: scale(1.02);
}

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

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

/* Company Fields */
.company-fields-wrapper {
  padding: 1rem;
  background: var(--surface);
  border-radius: 0.5rem;
  margin-top: 1rem;
}

/* Personal Client Message */
.personal-client-message {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: 0.5rem;
  color: var(--text-light);
  margin-top: 1rem;
}

.personal-client-message i {
  font-size: 1.5rem;
  color: var(--primary);
}

.personal-client-message p {
  margin: 0;
  font-size: 0.9rem;
}

/* Desktop Styles */
@media (min-width: 768px) {
  /* Bloquear scroll del body cuando el modal está activo */
  body.modal-open {
    overflow: hidden;
  }

  .modal-content {
    max-width: 800px;
    max-height: 90vh; 
    padding: 2.5rem;
    overflow-y: hidden;
  }

  .modal-header {
    margin-bottom: 1.5rem;
  }

  .modal-header h2 {
    font-size: 1.75rem;
  }

  .step-indicator {
    display: flex;
    margin-bottom: 2rem;
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }

  .step-label {
    font-size: 0.85rem;
  }

  .form-sections-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem; 
    overflow: hidden;
    flex: 1;
    overflow-y: auto; /* Scroll para el contenido si es muy largo */
  }

  .form-section {
    display: none;
    padding: 0;
  }

  .form-section.active {
    /* CAMBIO: Usar Grid de dos columnas para mejorar la vista de los inputs */
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 1.5rem; /* Separación entre filas y columnas */
  }

  .section-title {
    display: none;
  }

  /* Aseguramos que el botón de toggle, el wrapper de la empresa y el mensaje abarquen las dos columnas */
  .toggle-btn,
  .company-fields-wrapper,
  .personal-client-message {
    grid-column: 1 / -1; 
  }

  .company-fields-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 0.5rem;
    margin-top: 0;
  }

  .company-fields-wrapper h4 {
    font-size: 1rem;
    margin-bottom: 0;
    grid-column: 1 / -1;
    color: var(--text);
    font-weight: 600;
  }

  .mobile-nav-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
  }

  .nav-btn {
    padding: 0.875rem;
    font-size: 1rem;
  }

  #submitBtn {
    margin-top: 1.5rem;
    padding: 1rem;
    font-size: 1.1rem;
  }

  label {
    font-size: 0.9rem;
  }

  input,
  select {
    padding: 0.75rem;
    font-size: 1rem;
  }

  .form-group {
    gap: 0.5rem;
  }

  .personal-client-message {
    padding: 1rem;
    margin-top: 0;
  }

  .personal-client-message i {
    font-size: 1.5rem;
  }

  .personal-client-message p {
    font-size: 0.95rem;
  }

  .toggle-btn {
    padding: 1rem;
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  .modal-content {
    max-width: 900px;
  }

  .company-fields-wrapper {
    grid-template-columns: repeat(3, 1fr);
  }
}