/* ============================================================================
   DAT Platform - Authentication Styles
   ============================================================================ */

/* Auth Page Layout */
.auth-page {
  min-height: 100vh;
  background: var(--color-bg);
}

.auth-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

/* Left Branding Panel */
.auth-branding {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.auth-branding-content {
  position: relative;
  z-index: 1;
  max-width: 480px;
}

.auth-branding .logo {
  margin-bottom: var(--space-3xl);
}

/* Back to Home Link */
.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-tertiary);
  text-decoration: none;
  margin-bottom: var(--space-lg);
  transition: color var(--transition-fast);
}

.back-home-link:hover {
  color: var(--color-primary-light);
}

.back-home-link svg {
  transition: transform var(--transition-fast);
}

.back-home-link:hover svg {
  transform: translateX(-3px);
}

/* Mobile-only back link (inside form panel) */
.back-home-mobile {
  display: none;
}

.auth-branding h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.auth-branding > .auth-branding-content > p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--space-3xl);
}

.auth-branding-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.auth-branding-bg .grid-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.auth-branding-bg .orb-1 {
  width: 500px;
  height: 500px;
  top: -150px;
  right: -150px;
  background: var(--color-primary);
  filter: blur(120px);
  opacity: 0.3;
}

/* Auth Features List */
.auth-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.auth-feature {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.auth-feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.auth-feature-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-primary-light);
}

.auth-feature h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.auth-feature p {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

/* Right Form Panel */
.auth-form-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  background: var(--color-bg);
}

.auth-form-wrapper {
  width: 100%;
  max-width: 400px;
}

.auth-form-header {
  margin-bottom: var(--space-2xl);
}

.auth-form-header h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.auth-form-header p {
  color: var(--color-text-secondary);
}

.auth-form-header a {
  color: var(--color-primary-light);
  font-weight: 500;
}

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

/* Form Elements */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* Account Type Toggle */
.account-type-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.account-type-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.account-type-btn:first-child {
  border-right: 1px solid var(--color-border);
}

.account-type-btn.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary-light);
}

.account-type-btn:hover:not(.active) {
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-secondary);
}

.account-type-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

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

.form-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.forgot-link {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-primary-light);
}

.forgot-link:hover {
  text-decoration: underline;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* Password Input with Toggle */
.password-input {
  position: relative;
}

.password-input input {
  width: 100%;
  padding-right: 48px;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

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

.toggle-password svg {
  width: 20px;
  height: 20px;
}

/* Password Strength */
.password-strength {
  margin-top: var(--space-sm);
}

.strength-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.strength-fill {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: all var(--transition-base);
}

.strength-fill.weak { width: 33%; background: var(--color-error); }
.strength-fill.medium { width: 66%; background: var(--color-warning); }
.strength-fill.strong { width: 100%; background: var(--color-success); }

.strength-text {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

/* Checkbox */
.checkbox-group {
  flex-direction: row;
  align-items: flex-start;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.checkbox-label input {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  margin-top: 2px;
}

.checkbox-label input:checked + .checkmark {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-label input:checked + .checkmark::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-bottom: 2px;
}

.checkbox-label a {
  color: var(--color-primary-light);
}

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

/* Full Width Button */
.btn-full {
  width: 100%;
  padding: 0.875rem;
  font-size: 1rem;
}

/* Divider */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--color-text-tertiary);
  font-size: 0.8125rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* Social Buttons */
.social-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.btn-social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-social:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-light);
}

.btn-social svg {
  width: 20px;
  height: 20px;
}

/* Footer */
.auth-footer {
  margin-top: var(--space-xl);
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  text-align: center;
}

.auth-footer a {
  color: var(--color-text-secondary);
}

.auth-footer a:hover {
  color: var(--color-text);
}

/* Error State */
.form-group.error input {
  border-color: var(--color-error);
}

.form-group .error-message {
  font-size: 0.8125rem;
  color: var(--color-error);
}

/* Loading State */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Success Message */
.success-message {
  padding: var(--space-md);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-lg);
  color: var(--color-success);
  font-size: 0.9375rem;
  text-align: center;
}

/* ============================================================================
   Verification Page Styles
   ============================================================================ */

/* Verify Icon */
.verify-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 50%;
  margin-bottom: var(--space-lg);
}

.verify-subtitle {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.verify-email-highlight {
  color: var(--color-primary-light);
  font-weight: 600;
}

/* Code Input Boxes */
.code-inputs {
  display: flex;
  flex-direction: row;
  gap: 10px;
  justify-content: center;
}

.code-input {
  width: 52px !important;
  min-width: 52px;
  max-width: 52px;
  height: 60px;
  flex: 0 0 52px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 600;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: all var(--transition-fast);
  caret-color: var(--color-primary);
  padding: 0 !important;
}

/* Override .form-group input styles for code inputs */
.form-group .code-inputs {
  flex-direction: row;
}

.form-group .code-input {
  width: 52px !important;
  padding: 0 !important;
}

.code-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
  background: var(--color-bg-secondary);
}

.code-input:not(:placeholder-shown) {
  border-color: var(--color-primary);
  background: rgba(99, 102, 241, 0.05);
}

/* Verify Actions */
.verify-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.verify-actions p {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  margin: 0;
}

.verify-separator {
  color: var(--color-text-tertiary);
  font-size: 0.8125rem;
}

.btn-link {
  background: none;
  border: none;
  color: var(--color-primary-light);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

.btn-link:disabled {
  color: var(--color-text-tertiary);
  cursor: not-allowed;
  text-decoration: none;
}

/* ============================================================================
   Form Message Styles
   ============================================================================ */

.form-message {
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  line-height: 1.5;
}

.form-message.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.form-message.error a {
  color: #818cf8;
}

.form-message.success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

/* ============================================================================
   Modal Styles (API Key Modal)
   ============================================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: var(--space-xl);
}

.modal-content {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 40px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.modal-icon {
  margin-bottom: var(--space-lg);
}

.modal-content h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.modal-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-xl);
}

.api-key-display {
  text-align: left;
}

.api-key-display label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.api-key-value {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 12px 16px;
}

.api-key-value code {
  flex: 1;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: var(--color-primary-light);
  word-break: break-all;
  line-height: 1.5;
}

.btn-copy {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-copy:hover {
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.1);
}

.modal-warning {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-lg);
  text-align: left;
}

.modal-warning svg {
  flex-shrink: 0;
  color: #f59e0b;
  margin-top: 2px;
}

.modal-warning span {
  font-size: 0.8125rem;
  color: #d4a574;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 1024px) {
  .auth-container {
    grid-template-columns: 1fr;
  }

  .auth-branding {
    display: none;
  }

  .back-home-mobile {
    display: inline-flex;
  }

  .auth-form-container {
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .social-buttons {
    grid-template-columns: 1fr;
  }

  .code-inputs {
    gap: 6px;
  }

  .code-input {
    width: 44px !important;
    min-width: 44px;
    max-width: 44px;
    flex: 0 0 44px;
    height: 52px;
    font-size: 1.25rem;
  }

  .modal-content {
    padding: 28px 20px;
  }

  .api-key-value code {
    font-size: 0.7rem;
  }
}