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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: #f9fafb;
}

.signup-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Left Side - Form */
.form-side {
  width: 50%;
  overflow-y: auto;
  padding: 40px 20px;
  position: relative;
  z-index: 1;
}

.form-content {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  font-weight: 300;
}

.logo-section h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1f2937;
}

.form-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 8px;
}

.subtitle {
  color: #6b7280;
  font-size: 16px;
  margin-bottom: 32px;
}

/* Google Button */
.google-btn {
  width: 100%;
  padding: 14px;
  border: 2px solid #e5e7eb;
  background: white;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: all 0.2s;
}

.google-btn:hover {
  background: #f9fafb;
  border-color: #d1d5db;
}

.google-btn i {
  font-size: 20px;
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  margin: 24px 0;
  color: #9ca3af;
  font-size: 14px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e5e7eb;
}

.divider span {
  padding: 0 16px;
}

/* Form */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 8px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 15px;
  color: #1f2937;
  transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group select {
  cursor: pointer;
}

.checkbox-label {
  display: flex;
  align-items: start;
  gap: 12px;
  font-size: 14px;
  color: #374151;
  cursor: pointer;
  font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-label span {
  line-height: 1.5;
}

.checkbox-label a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

.checkbox-label a:hover {
  text-decoration: underline;
}

/* Submit Button */
.submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
  margin-top: 8px;
}

.submit-btn:hover {
  transform: translateY(-2px);
}

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

/* Sign In Link */
.signin-link {
  text-align: center;
  margin-top: 24px;
  color: #6b7280;
  font-size: 14px;
}

.signin-link a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

.signin-link a:hover {
  text-decoration: underline;
}

/* Right Side - Image */
.image-side {
  width: 50%;
  position: fixed;
  right: 0;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: none;
  z-index: 0;
}

.image-side img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}

.image-side img.active {
  opacity: 1;
  transform: translateX(0);
}

.image-side img.slide-out {
  opacity: 0;
  transform: translateX(-100px);
}

.image-side img.slide-in {
  opacity: 0;
  transform: translateX(100px);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  z-index: 1;
}

.image-overlay h2 {
  color: white;
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

.image-overlay p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  text-align: center;
}

/* Responsive */
/* Error Modal */
.error-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.error-modal.active {
  display: flex;
}

.error-modal-content {
  background: white;
  border-radius: 16px;
  padding: 40px;
  max-width: 400px;
  text-align: center;
  animation: slideUp 0.3s ease;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.error-icon {
  width: 80px;
  height: 80px;
  background: #fee2e2;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.error-icon i {
  font-size: 48px;
  color: #ef4444;
}

.error-modal-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 12px;
}

.error-modal-content p {
  font-size: 16px;
  color: #6b7280;
  margin-bottom: 24px;
  line-height: 1.5;
}

.error-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
}

.error-btn:hover {
  transform: translateY(-2px);
}

@media (min-width: 1024px) {
  .image-side {
    display: block;
  }
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-content h2 {
    font-size: 28px;
  }
}