/* Auth modal styles */
.auth-modal-backdrop {
  z-index: 2000;
}

.auth-modal {
  max-width: 440px;
}

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

.auth-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.auth-field label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
}

.auth-field input,
.auth-field select {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--fs-base);
  transition: border-color var(--transition-fast);
}

.auth-field input:focus,
.auth-field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.auth-field select {
  cursor: pointer;
}

.auth-otp-input {
  text-align: center;
  font-size: var(--fs-2xl) !important;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.3em;
  padding: var(--space-md) !important;
}

.auth-error {
  background: var(--error-bg, #fef2f2);
  color: var(--error, #ef4444);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-md);
}

.auth-switch {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.auth-link, .auth-resend, .auth-backup-link {
  color: var(--accent);
  cursor: pointer;
  font-weight: var(--fw-medium);
}

.auth-link:hover, .auth-resend:hover, .auth-backup-link:hover {
  text-decoration: underline;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  margin-bottom: var(--space-lg);
  line-height: 1.5;
}

/* 2FA choice */
.auth-2fa-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.auth-2fa-option {
  text-align: center;
  padding: var(--space-lg);
  border: 2px solid var(--border-color);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.auth-2fa-option:hover {
  border-color: var(--accent);
  background: var(--accent-light, rgba(59,130,246,0.06));
}

.auth-2fa-option h3 {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  margin: var(--space-sm) 0 var(--space-xs);
}

.auth-2fa-option p {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.4;
}

.auth-2fa-icon {
  color: var(--accent);
}

/* TOTP setup */
.auth-totp-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.auth-totp-step {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.auth-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  flex-shrink: 0;
}

.auth-totp-step p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.auth-qr-container {
  display: flex;
  justify-content: center;
  padding: var(--space-md);
}

.auth-qr-container svg {
  max-width: 200px;
  width: 100%;
  height: auto;
}

.auth-secret-display {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
}

.auth-secret-display code {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  word-break: break-all;
}

.auth-backup-codes {
  font-size: var(--fs-sm);
}

.auth-backup-codes summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: var(--fw-medium);
}

.auth-backup-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.auth-backup-grid code {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-xs);
  background: var(--bg-tertiary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  text-align: center;
}

/* User menu */
.user-menu-wrapper {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 2px;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.user-menu-trigger:hover {
  background: var(--bg-tertiary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
}

.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition-fast);
}

.user-menu-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-menu-header {
  padding: var(--space-md);
}

.user-menu-name {
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
}

.user-menu-email {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

.user-menu-divider {
  height: 1px;
  background: var(--border-color);
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
  text-align: left;
  border: none;
  background: none;
}

.user-menu-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.user-menu-logout:hover {
  color: var(--error, #ef4444);
}

/* Toast notifications */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  z-index: 3000;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  font-size: var(--fs-sm);
  pointer-events: auto;
  opacity: 0;
  transform: translateX(100%);
  transition: all var(--transition-base);
  max-width: 360px;
}

.toast-visible {
  opacity: 1;
  transform: translateX(0);
}

.toast-info { border-left: 3px solid var(--accent); }
.toast-success { border-left: 3px solid var(--success, #22c55e); }
.toast-error { border-left: 3px solid var(--error, #ef4444); }
.toast-warning { border-left: 3px solid var(--warning, #f59e0b); }

.toast-message {
  flex: 1;
}

.toast-close {
  color: var(--text-muted);
  cursor: pointer;
  font-size: var(--fs-lg);
  line-height: 1;
  padding: 0 var(--space-xs);
  border: none;
  background: none;
}

.toast-close:hover {
  color: var(--text-primary);
}

/* Teacher dashboard */
.teacher-dashboard {
  max-width: 1200px;
}

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

.classroom-join-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-light, rgba(59,130,246,0.08));
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--border-radius);
  display: inline-block;
}

.students-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.students-table th,
.students-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.students-table th {
  font-weight: var(--fw-semibold);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.students-table tr:hover td {
  background: var(--bg-tertiary);
}

/* Profile page */
.profile-section {
  margin-bottom: var(--space-xl);
}

.profile-section h3 {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-md);
}

.profile-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.profile-field label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
}

.profile-field input {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--fs-base);
}

.profile-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

/* Responsive for auth */
@media (max-width: 480px) {
  .auth-2fa-options {
    grid-template-columns: 1fr;
  }

  .auth-modal {
    width: 95%;
    padding: var(--space-lg);
  }

  .toast-container {
    right: var(--space-sm);
    left: var(--space-sm);
  }

  .toast {
    max-width: 100%;
  }
}