/* ===================================
   DarkSmog AI - ServiceNow Style Login
   Left-Right Split Layout Design
   =================================== */

/* Reset and Base */
.login-page {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
}

/* Main Split Layout Container */
.login-split-layout {
  display: flex;
  min-height: 100vh;
  position: relative;
  width: 100%;
}

/* ========================================
   LEFT PANEL - BRAND CONTENT
   ======================================== */

.login-left-panel {
  flex: 1;
  background: linear-gradient(135deg, 
    var(--bg-primary) 0%, 
    rgba(0, 212, 255, 0.05) 25%, 
    rgba(124, 58, 237, 0.05) 75%, 
    var(--bg-primary) 100%
  );
  background-size: 400% 400%;
  animation: gradientShift 8s ease-in-out infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.login-left-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 60%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
  z-index: 1;
}

.brand-content {
  max-width: 500px;
  width: 100%;
  position: relative;
  z-index: 2;
}

/* Brand Header */
.brand-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.brand-logo {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.6));
}

.brand-title {
  font-size: 2.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
  letter-spacing: -0.02em;
}

/* Brand Messaging */
.brand-messaging {
  margin-bottom: var(--space-10);
}

.welcome-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-4) 0;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.welcome-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
  font-weight: 400;
}

/* Feature Highlights */
.feature-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.feature-content h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-1) 0;
}

.feature-content p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

/* Trust Indicators */
.trust-indicators {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.trust-item {
  display: inline-block;
}

.trust-badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
}

/* ========================================
   RIGHT PANEL - LOGIN FORM
   ======================================== */

.login-right-panel {
  flex: 0 0 480px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  position: relative;
}

.login-right-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--accent-primary), transparent);
}

.login-form-container {
  width: 100%;
  max-width: 360px;
}

/* Login Form Header */
.login-form-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-2) 0;
  letter-spacing: -0.025em;
}

.login-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin: 0;
}

/* Form Styles */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.025em;
}

.form-input {
  width: 100%;
  padding: var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-normal);
  box-sizing: border-box;
}

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

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 
    0 0 0 3px rgba(0, 212, 255, 0.1),
    0 1px 2px 0 rgba(0, 0, 0, 0.05);
  background: var(--bg-card);
}

.form-input:hover {
  border-color: var(--border-primary);
}

/* Password Field */
.password-field {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.password-toggle:hover {
  color: var(--text-secondary);
  background: var(--bg-elevated);
}

.password-toggle:focus {
  outline: none;
  color: var(--accent-primary);
}

.password-icon {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

/* Form Options */
.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
}

.checkbox-container input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.checkmark {
  position: relative;
  width: 18px;
  height: 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.checkmark::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 6px;
  height: 10px;
  border: solid var(--accent-primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.checkbox-container input:checked ~ .checkmark {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.checkbox-container input:checked ~ .checkmark::after {
  opacity: 1;
  border-color: white;
}

.checkbox-container:hover .checkmark {
  border-color: var(--accent-primary);
}

.checkbox-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.forgot-password {
  font-size: 0.875rem;
  color: var(--accent-primary);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.forgot-password:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
}

/* Form Actions */
.form-actions {
  margin-top: var(--space-4);
}

.btn-login {
  width: 100%;
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-login:hover {
  transform: translateY(-1px);
  box-shadow: 
    0 10px 20px rgba(0, 212, 255, 0.3),
    0 6px 6px rgba(0, 212, 255, 0.1);
}

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

.btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-text {
  transition: opacity var(--transition-normal);
}

.btn-loader {
  position: absolute;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.btn-login.loading .btn-text {
  opacity: 0;
}

.btn-login.loading .btn-loader {
  opacity: 1;
}

.spinner {
  animation: spin 1s linear infinite;
}

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

/* Divider */
.divider {
  margin: var(--space-6) 0;
  position: relative;
  text-align: center;
}

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

.divider-text {
  background: var(--bg-secondary);
  padding: 0 var(--space-4);
  color: var(--text-muted);
  font-size: 0.875rem;
  position: relative;
}

/* Social Login */
.social-login {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.btn-social {
  width: 100%;
  padding: var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.btn-social:hover {
  background: var(--bg-card);
  border-color: var(--border-primary);
  transform: translateY(-1px);
}

.social-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Login Footer */
.login-footer {
  margin-top: var(--space-6);
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-secondary);
}

.signup-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.signup-link a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
}

.signup-link a:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
}

/* Page Footer */
.login-page-footer {
  padding: var(--space-4) var(--space-8);
  background: rgba(0, 0, 0, 0.02);
  border-top: 1px solid var(--border-secondary);
  backdrop-filter: blur(10px);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-link:hover {
  color: var(--text-secondary);
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-copyright p {
  margin: 0;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
  .login-split-layout {
    flex-direction: column;
  }
  
  .login-left-panel {
    flex: none;
    min-height: 50vh;
    padding: var(--space-6);
  }
  
  .login-right-panel {
    flex: none;
    border-left: none;
    border-top: 1px solid var(--border-primary);
    padding: var(--space-6);
  }
  
  .login-right-panel::before {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  }
  
  .welcome-title {
    font-size: 2.25rem;
  }
  
  .brand-title {
    font-size: 1.875rem;
  }
  
}

@media (max-width: 768px) {
  .login-left-panel {
    min-height: 40vh;
    padding: var(--space-4);
  }
  
  .login-right-panel {
    padding: var(--space-4);
  }
  
  .brand-header {
    flex-direction: column;
    text-align: center;
    gap: var(--space-2);
  }
  
  .welcome-title {
    font-size: 1.875rem;
    text-align: center;
  }
  
  .welcome-subtitle {
    font-size: 1.125rem;
    text-align: center;
  }
  
  .feature-highlights {
    gap: var(--space-4);
  }
  
  .trust-indicators {
    justify-content: center;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .form-options {
    flex-direction: column;
    gap: var(--space-3);
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .login-left-panel {
    padding: var(--space-3);
  }
  
  .login-right-panel {
    padding: var(--space-3);
  }
  
  .brand-logo {
    width: 48px;
    height: 48px;
  }
  
  .brand-title {
    font-size: 1.5rem;
  }
  
  .welcome-title {
    font-size: 1.5rem;
  }
  
  .feature-item {
    padding: var(--space-3);
  }
  
  .feature-icon {
    width: 40px;
    height: 40px;
  }
  
  .login-form-container {
    max-width: 100%;
  }
}

/* ========================================
   ACCESSIBILITY & PERFORMANCE
   ======================================== */

/* High contrast mode */
@media (prefers-contrast: high) {
  .form-input:focus {
    box-shadow: 0 0 0 3px var(--accent-primary);
  }
  
  .btn-login {
    border: 2px solid var(--accent-primary);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .gradientShift,
  .spinner {
    animation: none;
  }
  
  * {
    transition: none !important;
  }
  
  .login-left-panel {
    background: var(--bg-primary);
  }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
  .login-left-panel {
    background: linear-gradient(135deg, 
      #0a0a0a 0%, 
      rgba(0, 212, 255, 0.03) 25%, 
      rgba(124, 58, 237, 0.03) 75%, 
      #0a0a0a 100%
    );
  }
}