/* Login modal + header sign-out button for gated library instances.
   Matches the .modal-overlay / .modal-content conventions from styles.css
   (same color variables, radius, shadow, typography). Scoped to
   #auth-modal and #auth-signout-button. */

#auth-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(45, 55, 72, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2500;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

#auth-modal[hidden] {
  display: none;
}

#auth-modal .auth-modal-content {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 420px;
  padding: 28px 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#auth-modal h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary-color);
}

#auth-modal .auth-subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-light);
}

#auth-signin-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#auth-modal .auth-field {
  display: flex;
  flex-direction: column;
}

#auth-modal label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 4px;
}

#auth-modal input[type="email"],
#auth-modal input[type="password"],
#auth-modal #auth-password-input {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: white;
  color: var(--text-color);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

#auth-modal input[type="email"]:focus,
#auth-modal input[type="password"]:focus,
#auth-modal #auth-password-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.15);
}

/* Password visibility toggle: an eye icon button positioned inside the
   password input. The input reserves padding-right so text doesn't run
   under the button. Rule selector uses the ID (not [type="password"])
   so it still applies when the input type is flipped to "text". */
#auth-modal .auth-password-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

#auth-modal #auth-password-input {
  padding-right: 42px;
}

#auth-modal .auth-password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  padding: 6px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: color var(--transition-fast), background var(--transition-fast);
}

#auth-modal .auth-password-toggle:hover {
  color: var(--primary-color);
  background: var(--primary-light);
}

#auth-modal .auth-password-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

#auth-signin-submit {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 11px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

#auth-signin-submit:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

#auth-signin-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#auth-forgot-link {
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px;
  text-align: center;
  text-decoration: underline;
}

#auth-forgot-link:hover {
  color: var(--primary-hover);
}

#auth-error {
  color: var(--danger-color);
  font-size: 0.85rem;
  padding: 8px 12px;
  background: rgba(229, 57, 53, 0.08);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--danger-color);
}

#auth-reset-confirm {
  color: var(--success-color);
  font-size: 0.85rem;
  padding: 8px 12px;
  background: rgba(67, 160, 71, 0.08);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--success-color);
}

#auth-error[hidden],
#auth-reset-confirm[hidden] {
  display: none;
}

/* Sign-out button in the header — small circular icon to sit next to
   the existing tour button. Matches header button translucent style. */
#auth-signout-button {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

#auth-signout-button:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

#auth-signout-button[hidden] {
  display: none;
}

/* Never leak into PDF exports. */
body.print-mode #auth-modal,
body.print-mode #auth-signout-button {
  display: none !important;
}