/* ============================================
   ESTILOS SISTEMA DE AUTENTICACIÓN FTL
   ============================================ */

:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --error-color: #dc2626;
  --success-color: #16a34a;
  --border-color: #e5e7eb;
  --text-color: #1f2937;
  --bg-gray: #f9fafb;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-container {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 450px;
  width: 100%;
  padding: 40px;
  animation: fadeIn 0.5s ease;
}

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

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-logo {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
}

.auth-header h1 {
  font-size: 24px;
  color: var(--text-color);
  margin-bottom: 8px;
}

.auth-header p {
  color: #6b7280;
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-color);
  font-weight: 500;
  font-size: 14px;
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input.error {
  border-color: var(--error-color);
}

.error-message {
  color: var(--error-color);
  font-size: 13px;
  margin-top: 6px;
  display: none;
}

.error-message.show {
  display: block;
}

.success-message {
  background: #d1fae5;
  color: var(--success-color);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  display: none;
}

.success-message.show {
  display: block;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: #9ca3af;
  cursor: not-allowed;
  transform: none;
}

.auth-links {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
}

.auth-links a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.auth-links a:hover {
  text-decoration: underline;
}

.divider {
  text-align: center;
  margin: 24px 0;
  color: #9ca3af;
  font-size: 14px;
}

/* Loading spinner */
.spinner {
  display: none;
  border: 3px solid #f3f4f6;
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

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

.spinner.show {
  display: block;
}

/* Responsive */
@media (max-width: 480px) {
  .auth-container {
    padding: 24px;
  }
  
  .auth-header h1 {
    font-size: 20px;
  }
}