/* ============================================================
   Parker Intelligence — Paywall System
   Design: Navy (#0a1628), Gold (#c9a227), Playfair Display / Inter
   ============================================================ */

:root {
  --pi-navy: #0a1628;
  --pi-navy-light: #111d30;
  --pi-navy-mid: #162240;
  --pi-gold: #c9a227;
  --pi-gold-light: #d4b44a;
  --pi-gold-dark: #a8871e;
  --pi-cream: #faf9f6;
  --pi-white: #ffffff;
  --pi-text: #1a1a1a;
  --pi-text-muted: #555555;
  --pi-border: #e5e5e5;
  --pi-font-heading: 'Playfair Display', Georgia, serif;
  --pi-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --pi-radius: 8px;
  --pi-radius-lg: 12px;
  --pi-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  --pi-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.18);
  --pi-transition: 0.3s ease;
}


/* ============================================================
   1. Copy Protection
   ============================================================ */

.pi-no-copy .content-section,
.pi-no-copy .section-anchor,
.pi-no-copy article,
.pi-no-copy main {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

@media print {
  body.pi-no-copy * {
    display: none !important;
  }
  body.pi-no-copy::after {
    content: 'Print & PDF requires All-Access ($299/yr) — advancedlearning.academy';
    display: block;
    text-align: center;
    padding: 4rem 2rem;
    font: 700 1.5rem Georgia, serif;
    color: var(--pi-navy);
  }
}


/* ============================================================
   2. Copy Notice Toast
   ============================================================ */

.pi-copy-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--pi-navy);
  color: var(--pi-white);
  font-family: var(--pi-font-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--pi-gold);
  border-radius: var(--pi-radius);
  box-shadow: var(--pi-shadow-lg);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
  max-width: 90vw;
  text-align: center;
  line-height: 1.4;
}

.pi-copy-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.pi-copy-toast .pi-toast-icon {
  margin-right: 0.5rem;
  color: var(--pi-gold);
}


/* ============================================================
   3. Upgrade Banner (Sticky Top Bar)
   ============================================================ */

.pi-upgrade-banner {
  position: sticky;
  top: 0;
  z-index: 9000;
  background: linear-gradient(135deg, var(--pi-navy) 0%, var(--pi-navy-mid) 100%);
  color: var(--pi-white);
  font-family: var(--pi-font-body);
  font-size: 0.85rem;
  padding: 0.6rem 1.5rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--pi-gold);
}

.pi-upgrade-banner .pi-banner-label {
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--pi-gold);
}

.pi-upgrade-banner .pi-banner-sep {
  color: rgba(255, 255, 255, 0.3);
  margin: 0 0.25rem;
}

.pi-upgrade-banner .pi-banner-text {
  color: rgba(255, 255, 255, 0.85);
}

.pi-upgrade-banner .pi-banner-link {
  color: var(--pi-gold);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--pi-transition);
  white-space: nowrap;
}

.pi-upgrade-banner .pi-banner-link:hover {
  color: var(--pi-gold-light);
  text-decoration: underline;
}

.pi-upgrade-banner .pi-banner-close {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.25rem;
  line-height: 1;
  transition: color var(--pi-transition);
}

.pi-upgrade-banner .pi-banner-close:hover {
  color: var(--pi-white);
}


/* ============================================================
   4. Paywall Overlay
   ============================================================ */

/* Gradient fade — light theme */
.pi-paywall-fade {
  position: relative;
  margin-top: -200px;
  padding-top: 200px;
  background: linear-gradient(to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.7) 40%,
    rgba(255, 255, 255, 1) 100%
  );
  pointer-events: none;
}

/* Gradient fade — dark theme */
.pi-theme-dark .pi-paywall-fade,
.pi-paywall-fade.pi-fade-dark {
  background: linear-gradient(to bottom,
    rgba(10, 22, 40, 0) 0%,
    rgba(10, 22, 40, 0.7) 40%,
    rgba(10, 22, 40, 1) 100%
  );
}

/* Paywall container */
.pi-paywall {
  pointer-events: auto;
  background: var(--pi-cream);
  border: 2px solid var(--pi-gold);
  border-radius: var(--pi-radius-lg);
  max-width: 720px;
  margin: 0 auto 3rem;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--pi-shadow-lg);
  font-family: var(--pi-font-body);
  position: relative;
}

/* Dark theme paywall */
.pi-theme-dark .pi-paywall {
  background: var(--pi-navy-light);
  border-color: var(--pi-gold);
}

.pi-paywall-lock {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
  color: var(--pi-gold);
}

.pi-paywall-title {
  font-family: var(--pi-font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--pi-navy);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}

.pi-theme-dark .pi-paywall-title {
  color: var(--pi-white);
}

.pi-paywall-subtitle {
  font-size: 0.95rem;
  color: var(--pi-text-muted);
  margin: 0 0 2rem;
  line-height: 1.5;
}

.pi-theme-dark .pi-paywall-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

/* Pricing grid */
.pi-pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

/* Tier card */
.pi-tier-card {
  background: var(--pi-white);
  border: 1px solid var(--pi-border);
  border-radius: var(--pi-radius);
  padding: 1.75rem 1.25rem;
  text-align: center;
  position: relative;
  transition: border-color var(--pi-transition), box-shadow var(--pi-transition);
}

.pi-tier-card:hover {
  border-color: var(--pi-gold);
  box-shadow: 0 2px 12px rgba(201, 162, 39, 0.15);
}

.pi-theme-dark .pi-tier-card {
  background: var(--pi-navy);
  border-color: rgba(255, 255, 255, 0.1);
}

.pi-theme-dark .pi-tier-card:hover {
  border-color: var(--pi-gold);
}

/* Recommended badge */
.pi-tier-card.pi-recommended {
  border-color: var(--pi-gold);
  border-width: 2px;
}

.pi-tier-badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--pi-gold);
  color: var(--pi-navy);
  font-family: var(--pi-font-body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  white-space: nowrap;
}

.pi-tier-name {
  font-family: var(--pi-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pi-navy);
  margin: 0 0 0.75rem;
}

.pi-theme-dark .pi-tier-name {
  color: var(--pi-white);
}

.pi-tier-price {
  font-family: var(--pi-font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--pi-navy);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.pi-theme-dark .pi-tier-price {
  color: var(--pi-gold);
}

.pi-tier-period {
  font-size: 0.8rem;
  color: var(--pi-text-muted);
  margin-bottom: 1.25rem;
}

.pi-theme-dark .pi-tier-period {
  color: rgba(255, 255, 255, 0.5);
}

.pi-tier-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  text-align: left;
}

.pi-tier-features li {
  font-size: 0.85rem;
  color: var(--pi-text);
  padding: 0.35rem 0;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.4;
}

.pi-theme-dark .pi-tier-features li {
  color: rgba(255, 255, 255, 0.8);
}

.pi-tier-features li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--pi-gold);
  font-weight: 700;
  font-size: 0.9rem;
}

/* CTA buttons */
.pi-tier-cta {
  display: inline-block;
  width: 100%;
  padding: 0.75rem 1.5rem;
  font-family: var(--pi-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--pi-radius);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: all var(--pi-transition);
  box-sizing: border-box;
}

.pi-tier-cta-standard {
  background: transparent;
  color: var(--pi-navy);
  border: 2px solid var(--pi-navy);
}

.pi-tier-cta-standard:hover {
  background: var(--pi-navy);
  color: var(--pi-white);
}

.pi-theme-dark .pi-tier-cta-standard {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--pi-white);
}

.pi-theme-dark .pi-tier-cta-standard:hover {
  background: rgba(255, 255, 255, 0.1);
}

.pi-tier-cta-allaccess {
  background: var(--pi-gold);
  color: var(--pi-navy);
}

.pi-tier-cta-allaccess:hover {
  background: var(--pi-gold-light);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}

/* Enterprise line */
.pi-enterprise {
  font-size: 0.8rem;
  color: var(--pi-text-muted);
  margin: 1rem 0 0;
}

.pi-theme-dark .pi-enterprise {
  color: rgba(255, 255, 255, 0.45);
}

.pi-enterprise a {
  color: var(--pi-gold);
  text-decoration: none;
}

.pi-enterprise a:hover {
  text-decoration: underline;
}

/* Login link */
.pi-login-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--pi-text-muted);
}

.pi-theme-dark .pi-login-link {
  color: rgba(255, 255, 255, 0.5);
}

.pi-login-link a {
  color: var(--pi-gold);
  text-decoration: none;
  font-weight: 500;
}

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


/* ============================================================
   5. TOC Preview (inside paywall box)
   ============================================================ */

.pi-toc-preview {
  background: #f3f2ef;
  border-radius: var(--pi-radius);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  text-align: left;
}

.pi-theme-dark .pi-toc-preview {
  background: rgba(255, 255, 255, 0.05);
}

.pi-toc-preview-title {
  font-family: var(--pi-font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--pi-navy);
  margin: 0 0 0.75rem;
}

.pi-theme-dark .pi-toc-preview-title {
  color: var(--pi-white);
}

.pi-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}

.pi-toc-list li {
  counter-increment: toc-counter;
  padding: 0.4rem 0;
  font-size: 0.85rem;
  line-height: 1.4;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pi-toc-list li::before {
  content: counter(toc-counter) '.';
  font-weight: 600;
  color: var(--pi-navy);
  min-width: 1.5rem;
}

.pi-theme-dark .pi-toc-list li::before {
  color: var(--pi-gold);
}

.pi-toc-list li.pi-toc-unlocked {
  color: var(--pi-text);
}

.pi-theme-dark .pi-toc-list li.pi-toc-unlocked {
  color: rgba(255, 255, 255, 0.85);
}

.pi-toc-list li.pi-toc-locked {
  color: #444444;
}

.pi-theme-dark .pi-toc-list li.pi-toc-locked {
  color: rgba(255, 255, 255, 0.65);
}

.pi-toc-lock-icon {
  font-size: 0.75rem;
  color: #999999;
  margin-left: auto;
  flex-shrink: 0;
}

.pi-theme-dark .pi-toc-lock-icon {
  color: rgba(255, 255, 255, 0.5);
}


/* ============================================================
   6. Login Modal
   ============================================================ */

.pi-login-overlay {
  position: fixed;
  inset: 0;
  z-index: 20000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.pi-login-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.pi-login-box {
  background: var(--pi-white);
  border-radius: var(--pi-radius-lg);
  padding: 2.5rem 2rem;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--pi-shadow-lg);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.35s ease;
}

.pi-login-overlay.visible .pi-login-box {
  transform: translateY(0);
}

.pi-login-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--pi-text-muted);
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  transition: color var(--pi-transition);
}

.pi-login-close:hover {
  color: var(--pi-text);
}

.pi-login-heading {
  font-family: var(--pi-font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--pi-navy);
  margin: 0 0 0.5rem;
  text-align: center;
}

.pi-login-subtext {
  font-family: var(--pi-font-body);
  font-size: 0.875rem;
  color: var(--pi-text-muted);
  text-align: center;
  margin: 0 0 1.75rem;
}

.pi-login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pi-login-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.pi-login-label {
  font-family: var(--pi-font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--pi-navy);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pi-login-input {
  font-family: var(--pi-font-body);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--pi-border);
  border-radius: var(--pi-radius);
  color: var(--pi-text);
  background: var(--pi-white);
  outline: none;
  transition: border-color var(--pi-transition), box-shadow var(--pi-transition);
}

.pi-login-input:focus {
  border-color: var(--pi-gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.15);
}

.pi-login-input::placeholder {
  color: #aaa;
}

.pi-login-submit {
  font-family: var(--pi-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  background: var(--pi-gold);
  color: var(--pi-navy);
  border: none;
  border-radius: var(--pi-radius);
  cursor: pointer;
  transition: all var(--pi-transition);
  margin-top: 0.5rem;
}

.pi-login-submit:hover {
  background: var(--pi-gold-light);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}

.pi-login-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.pi-login-error {
  font-size: 0.8rem;
  color: #c0392b;
  text-align: center;
  margin-top: 0.5rem;
  display: none;
}

.pi-login-error.visible {
  display: block;
}


/* ============================================================
   7. Assessment CTA Block
   ============================================================ */

.pi-assess-cta {
  background: linear-gradient(145deg, var(--pi-navy) 0%, var(--pi-navy-mid) 50%, #1a2d4a 100%);
  border-radius: var(--pi-radius-lg);
  padding: 3rem 2.5rem;
  margin: 3rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pi-assess-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--pi-gold), transparent);
}

.pi-assess-label {
  font-family: var(--pi-font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--pi-gold);
  margin: 0 0 1.25rem;
  line-height: 1.6;
}

.pi-assess-heading {
  font-family: var(--pi-font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--pi-white);
  margin: 0 0 1rem;
  line-height: 1.3;
}

.pi-assess-desc {
  font-family: var(--pi-font-body);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 540px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* Force all text inside CTA blocks to be light on dark background */
.pi-assess-cta h3,
.pi-assess-cta h4,
.pi-assess-cta p,
.pi-assess-cta li,
.pi-assess-cta span,
.pi-assess-cta div,
.pi-assess-cta strong {
  color: #ffffff;
}
.pi-assess-cta p {
  color: rgba(255, 255, 255, 0.7);
}
.pi-assess-cta .pi-assess-label {
  color: var(--pi-gold);
}

.pi-assess-btn {
  display: inline-block;
  font-family: var(--pi-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  background: var(--pi-gold);
  color: var(--pi-navy);
  border: none;
  border-radius: var(--pi-radius);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--pi-transition);
}

.pi-assess-btn:hover {
  background: var(--pi-gold-light);
  box-shadow: 0 4px 20px rgba(201, 162, 39, 0.4);
  transform: translateY(-1px);
}


/* ============================================================
   8. LIS Suite CTA
   ============================================================ */

.pi-lis-cta {
  background: var(--pi-navy);
  border-radius: var(--pi-radius-lg);
  padding: 3rem 2.5rem;
  margin: 3rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pi-lis-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--pi-gold), transparent);
}

.pi-lis-label {
  font-family: var(--pi-font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--pi-gold);
  margin: 0 0 1rem;
}

.pi-lis-heading {
  font-family: var(--pi-font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--pi-white);
  margin: 0 0 1.5rem;
  line-height: 1.3;
}

.pi-lis-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.pi-lis-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--pi-radius);
  padding: 1.25rem 0.75rem;
  text-align: center;
  transition: border-color var(--pi-transition), background var(--pi-transition);
}

.pi-lis-item:hover {
  border-color: var(--pi-gold);
  background: rgba(201, 162, 39, 0.05);
}

.pi-lis-item-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.5rem;
}

.pi-lis-item-name {
  font-family: var(--pi-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--pi-white);
  letter-spacing: 0.03em;
}

.pi-lis-desc {
  font-family: var(--pi-font-body);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 500px;
  margin: 0 auto 1.75rem;
  line-height: 1.5;
}

.pi-lis-btn {
  display: inline-block;
  font-family: var(--pi-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  background: var(--pi-gold);
  color: var(--pi-navy);
  border: none;
  border-radius: var(--pi-radius);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--pi-transition);
}

.pi-lis-btn:hover {
  background: var(--pi-gold-light);
  box-shadow: 0 4px 20px rgba(201, 162, 39, 0.4);
  transform: translateY(-1px);
}


/* ============================================================
   9. Reading Progress Bar
   ============================================================ */

.pi-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--pi-gold-dark), var(--pi-gold), var(--pi-gold-light));
  z-index: 99999;
  transition: width 0.15s linear;
  box-shadow: 0 0 6px rgba(201, 162, 39, 0.4);
}


/* ============================================================
   10. Bookmark Button
   ============================================================ */

.pi-bookmark-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 8000;
  width: 44px;
  height: 44px;
  background: var(--pi-navy);
  border: 2px solid var(--pi-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--pi-shadow);
  transition: all var(--pi-transition);
  color: var(--pi-gold);
  font-size: 1.1rem;
  line-height: 1;
  padding: 0;
}

.pi-bookmark-btn:hover {
  background: var(--pi-gold);
  color: var(--pi-navy);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
  transform: scale(1.08);
}

.pi-bookmark-btn.pi-bookmarked {
  background: var(--pi-gold);
  color: var(--pi-navy);
}

.pi-bookmark-tooltip {
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  background: var(--pi-navy);
  color: var(--pi-white);
  font-family: var(--pi-font-body);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--pi-transition);
}

.pi-bookmark-btn:hover .pi-bookmark-tooltip {
  opacity: 1;
}


/* ============================================================
   11. Responsive (600px breakpoint)
   ============================================================ */

@media (max-width: 600px) {

  /* Upgrade banner */
  .pi-upgrade-banner {
    font-size: 0.75rem;
    padding: 0.5rem 2.5rem 0.5rem 1rem;
    flex-direction: column;
    gap: 0.25rem;
  }

  .pi-upgrade-banner .pi-banner-sep {
    display: none;
  }

  /* Paywall */
  .pi-paywall {
    padding: 1.75rem 1.25rem;
    margin-left: 0.75rem;
    margin-right: 0.75rem;
    border-radius: var(--pi-radius);
  }

  .pi-paywall-title {
    font-size: 1.35rem;
  }

  /* Pricing grid stacks */
  .pi-pricing-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .pi-tier-card {
    padding: 1.5rem 1rem;
  }

  .pi-tier-price {
    font-size: 1.75rem;
  }

  /* TOC preview */
  .pi-toc-preview {
    padding: 1rem;
  }

  /* Login modal */
  .pi-login-box {
    padding: 2rem 1.5rem;
    width: 95%;
  }

  .pi-login-heading {
    font-size: 1.25rem;
  }

  /* Assessment CTA */
  .pi-assess-cta {
    padding: 2rem 1.5rem;
    margin: 2rem 0;
  }

  .pi-assess-heading {
    font-size: 1.35rem;
  }

  .pi-assess-desc {
    font-size: 0.875rem;
  }

  /* LIS CTA */
  .pi-lis-cta {
    padding: 2rem 1.5rem;
    margin: 2rem 0;
  }

  .pi-lis-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .pi-lis-heading {
    font-size: 1.25rem;
  }

  /* Bookmark */
  .pi-bookmark-btn {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .pi-bookmark-tooltip {
    display: none;
  }

  /* Copy toast */
  .pi-copy-toast {
    bottom: 1rem;
    font-size: 0.8rem;
    padding: 0.6rem 1rem;
  }
}