/* ──────────────────────────────────────────────
 * Lesson Player - Two-Column Layout
 * ──────────────────────────────────────────── */

/* ── Layout ────────────────────────────────── */

.pp-lesson-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--pp-space-6, 1.5rem);
  align-items: start;
}

.pp-lesson-main {
  min-width: 0;
}

/* Fullscreen mode */
.pp-lesson-layout--fullscreen {
  grid-template-columns: 1fr;
}

.pp-lesson-layout--fullscreen .pp-lesson-sidebar {
  display: none;
}

/* ── Sidebar ───────────────────────────────── */

.pp-lesson-sidebar {
  position: sticky;
  top: var(--pp-space-4, 1rem);
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  border: 1px solid var(--pp-border, #e3ded6);
  border-radius: var(--pp-radius-lg, 0.75rem);
  background: var(--pp-surface, #f7f5f0);
}

.pp-lesson-sidebar__toggle {
  position: absolute;
  top: var(--pp-space-3, 0.75rem);
  right: var(--pp-space-3, 0.75rem);
  background: var(--pp-surface, #f7f5f0);
  border: 1px solid var(--pp-border, #e3ded6);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1;
  color: var(--pp-text-secondary, #5f5b5a);
  transition: transform 0.2s;
}

.pp-lesson-sidebar__toggle:hover {
  color: var(--pp-text-primary, #333130);
  background: var(--pp-bg, #fff);
}

.pp-lesson-sidebar__toggle:focus-visible {
  outline: 3px solid var(--pp-primary, #499c57);
  outline-offset: 2px;
}

.pp-lesson-sidebar__toggle[aria-expanded="false"] svg {
  transform: rotate(180deg);
}

/* ── Sidebar Navigation ────────────────────── */

.pp-lesson-sidebar__nav {
  padding: var(--pp-space-4, 1rem);
}

.pp-lesson-sidebar__heading {
  font-size: var(--pp-text-sm, 0.875rem);
  font-weight: 600;
  margin: 0 0 var(--pp-space-3, 0.75rem);
  padding-right: 40px;
}

.pp-lesson-sidebar__heading a {
  color: var(--pp-primary-text, #346839);
  text-decoration: none;
}

.pp-lesson-sidebar__heading a:hover {
  text-decoration: underline;
}

.pp-lesson-sidebar__module {
  margin-bottom: var(--pp-space-2, 0.5rem);
}

.pp-lesson-sidebar__module-title {
  font-size: var(--pp-text-xs, 0.75rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--pp-text-secondary, #5f5b5a);
  cursor: pointer;
  padding: var(--pp-space-1, 0.25rem) 0;
  list-style: none;
}

.pp-lesson-sidebar__module-title::-webkit-details-marker {
  display: none;
}

.pp-lesson-sidebar__module-title::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid currentColor;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  margin-right: var(--pp-space-2, 0.5rem);
  transition: transform 0.2s;
}

.pp-lesson-sidebar__module[open] > .pp-lesson-sidebar__module-title::before {
  transform: rotate(90deg);
}

.pp-lesson-sidebar__module-num {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--pp-primary, #499c57);
  color: #fff;
  font-weight: 700;
  font-size: 11px;
  flex-shrink: 0;
  margin-right: var(--pp-space-2, 0.5rem);
  font-family: var(--pp-font-body);
}

.pp-lesson-sidebar__module-text {
  flex: 1;
}

.pp-lesson-sidebar__lessons {
  list-style: none;
  padding: 0;
  margin: var(--pp-space-1, 0.25rem) 0 0;
}

.pp-lesson-sidebar__lesson {
  font-size: var(--pp-text-sm, 0.875rem);
  border-left: 3px solid transparent;
  margin-bottom: 1px;
}

.pp-lesson-sidebar__lesson a,
.pp-lesson-sidebar__lesson span {
  display: flex;
  align-items: center;
  gap: var(--pp-space-2, 0.5rem);
  padding: var(--pp-space-2, 0.5rem) var(--pp-space-3, 0.75rem);
  color: var(--pp-text-primary, #333130);
  text-decoration: none;
  border-radius: 0 var(--pp-radius, 0.5rem) var(--pp-radius, 0.5rem) 0;
  transition: background 0.15s;
}

.pp-lesson-sidebar__lesson a:hover {
  background: rgba(73, 156, 87, 0.05);
}

.pp-lesson-sidebar__lesson a:focus-visible {
  outline: 3px solid var(--pp-primary, #499c57);
  outline-offset: -3px;
}

.pp-lesson-sidebar__lesson a svg,
.pp-lesson-sidebar__lesson span svg {
  flex-shrink: 0;
}

.pp-lesson-sidebar__lesson--current {
  border-left-color: var(--pp-primary, #499c57);
  background: rgba(73, 156, 87, 0.08);
}

.pp-lesson-sidebar__lesson--current span {
  font-weight: 600;
  color: var(--pp-primary-text, #346839);
}

.pp-lesson-sidebar__lesson--completed a svg,
.pp-lesson-sidebar__lesson--completed span svg {
  color: var(--pp-secondary-text, #a64115);
}

.pp-lesson-sidebar__lesson--locked span {
  color: var(--pp-text-secondary, #5f5b5a);
  font-style: italic;
}

/* ── Notes Panel ───────────────────────────── */

.pp-lesson-notes {
  border-top: 1px solid var(--pp-border, #e3ded6);
}

.pp-lesson-notes__toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--pp-space-2, 0.5rem);
  padding: var(--pp-space-3, 0.75rem) var(--pp-space-4, 1rem);
  background: none;
  border: none;
  font-size: var(--pp-text-sm, 0.875rem);
  font-weight: 600;
  color: var(--pp-text-primary, #333130);
  cursor: pointer;
  text-align: left;
}

.pp-lesson-notes__toggle:hover {
  background: rgba(0, 0, 0, 0.03);
}

.pp-lesson-notes__toggle:focus-visible {
  outline: 3px solid var(--pp-primary, #499c57);
  outline-offset: -3px;
}

.pp-lesson-notes__toggle svg:last-child {
  margin-left: auto;
  transition: transform 0.2s;
}

.pp-lesson-notes__toggle[aria-expanded="false"] svg:last-child {
  transform: rotate(-90deg);
}

.pp-lesson-notes__content {
  padding: 0 var(--pp-space-4, 1rem) var(--pp-space-4, 1rem);
}

.pp-lesson-notes__content[hidden] {
  display: none;
}

.pp-lesson-notes__form {
  display: flex;
  flex-direction: column;
  gap: var(--pp-space-2, 0.5rem);
  margin-bottom: var(--pp-space-3, 0.75rem);
}

.pp-lesson-notes__textarea {
  width: 100%;
  padding: var(--pp-space-2, 0.5rem);
  border: 1px solid var(--pp-border, #d6d1ca);
  border-radius: var(--pp-radius, 0.5rem);
  font-family: var(--pp-font-body, "Inter", sans-serif);
  font-size: var(--pp-text-sm, 0.875rem);
  resize: vertical;
  min-height: 48px;
}

.pp-lesson-notes__textarea:focus {
  outline: none;
  border-color: var(--pp-primary, #499c57);
  box-shadow: 0 0 0 3px rgba(73, 156, 87, 0.15);
}

.pp-lesson-notes__list {
  display: flex;
  flex-direction: column;
  gap: var(--pp-space-2, 0.5rem);
}

.pp-lesson-notes__empty {
  font-size: var(--pp-text-sm, 0.875rem);
  color: var(--pp-text-secondary, #5f5b5a);
  text-align: center;
  padding: var(--pp-space-2, 0.5rem);
}

/* Note item */
.pp-note-item {
  background: var(--pp-bg, #fff);
  border: 1px solid var(--pp-border, #e3ded6);
  border-radius: var(--pp-radius, 0.5rem);
  padding: var(--pp-space-2, 0.5rem) var(--pp-space-3, 0.75rem);
  font-size: var(--pp-text-sm, 0.875rem);
}

.pp-note-item__text {
  margin: 0 0 var(--pp-space-1, 0.25rem);
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.pp-note-item__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--pp-space-2, 0.5rem);
}

.pp-note-item__timestamp {
  font-size: var(--pp-text-xs, 0.75rem);
  color: var(--pp-primary-text, #346839);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  text-decoration: underline;
}

.pp-note-item__timestamp:hover {
  color: var(--pp-primary-dark);
}

.pp-note-item__timestamp:focus-visible {
  outline: 2px solid var(--pp-primary, #499c57);
  outline-offset: 2px;
}

.pp-note-item__time {
  font-size: var(--pp-text-xs, 0.75rem);
  color: var(--pp-text-secondary, #5f5b5a);
}

.pp-note-item__delete {
  background: none;
  border: none;
  color: var(--pp-text-secondary, #5f5b5a);
  cursor: pointer;
  padding: 2px;
  border-radius: 2px;
  line-height: 1;
}

.pp-note-item__delete:hover {
  color: var(--pp-error);
}

.pp-note-item__delete:focus-visible {
  outline: 2px solid var(--pp-primary, #499c57);
  outline-offset: 2px;
}

/* ── Sticky Bottom Navigation ──────────────── */

.pp-lesson-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--pp-bg, #fff);
  border-top: 1px solid var(--pp-border, #e3ded6);
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.08);
  display: flex;
  justify-content: space-between;
  padding: var(--pp-space-3, 0.75rem) var(--pp-space-6, 1.5rem);
  z-index: 50;
}

.pp-lesson-bottom-nav__link {
  display: flex;
  align-items: center;
  gap: var(--pp-space-2, 0.5rem);
  text-decoration: none;
  color: var(--pp-text-primary, #333130);
  padding: var(--pp-space-2, 0.5rem) var(--pp-space-3, 0.75rem);
  border-radius: var(--pp-radius, 0.5rem);
  transition: background 0.15s;
}

.pp-lesson-bottom-nav__link:hover {
  background: var(--pp-surface, #f7f5f0);
}

.pp-lesson-bottom-nav__link:focus-visible {
  outline: 3px solid var(--pp-primary, #499c57);
  outline-offset: -3px;
}

.pp-lesson-bottom-nav__link svg {
  flex-shrink: 0;
}

.pp-lesson-bottom-nav__label {
  display: block;
  font-size: var(--pp-text-xs, 0.75rem);
  color: var(--pp-text-secondary, #5f5b5a);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pp-lesson-bottom-nav__title {
  display: block;
  font-size: var(--pp-text-sm, 0.875rem);
  font-weight: 500;
  max-width: 250px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pp-lesson-bottom-nav__link--next {
  text-align: right;
}

/* Add bottom padding to prevent content being hidden by sticky nav */
.pp-lesson-page {
  padding-bottom: 80px;
}

/* Hide the old lesson nav when sticky nav is present */
.pp-lesson-page .pp-lesson-nav {
  display: none;
}

/* ── Responsive ────────────────────────────── */

@media (max-width: 1024px) {
  .pp-lesson-layout {
    grid-template-columns: 1fr;
  }

  .pp-lesson-sidebar {
    position: static;
    max-height: none;
    margin-top: var(--pp-space-6, 1.5rem);
  }

  .pp-lesson-sidebar__toggle {
    display: none;
  }
}

@media (max-width: 768px) {
  .pp-lesson-bottom-nav {
    padding: var(--pp-space-2, 0.5rem) var(--pp-space-3, 0.75rem);
  }

  .pp-lesson-bottom-nav__title {
    max-width: 120px;
    font-size: var(--pp-text-xs, 0.75rem);
  }
}

/* ── Lesson Completion Celebration Modal (P28-3) ───────────── */

.pp-complete-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--pp-space-4);
}
.pp-complete-modal[hidden] {
  display: none;
}
.pp-complete-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.pp-complete-modal__content {
  position: relative;
  background: var(--pp-surface);
  border: 1px solid var(--pp-border);
  border-radius: var(--pp-radius-xl);
  padding: var(--pp-space-8) var(--pp-space-6) var(--pp-space-6);
  max-width: 440px;
  width: 100%;
  box-shadow: var(--pp-shadow-xl);
  text-align: center;
  animation: pp-complete-modal-in 0.25s ease-out;
}
@keyframes pp-complete-modal-in {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .pp-complete-modal__content {
    animation: none;
  }
}
.pp-complete-modal__close {
  position: absolute;
  top: var(--pp-space-3);
  right: var(--pp-space-3);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--pp-radius-md);
  color: var(--pp-text-secondary);
  cursor: pointer;
  transition:
    background 0.15s,
    color 0.15s;
}
.pp-complete-modal__close:hover {
  background: var(--pp-muted);
  color: var(--pp-text);
}
.pp-complete-modal__close:focus-visible {
  outline: 3px solid var(--pp-primary);
  outline-offset: 2px;
}
.pp-complete-modal__icon {
  color: var(--pp-success-text);
  margin-bottom: var(--pp-space-3);
  display: inline-flex;
}
.pp-complete-modal__title {
  font-family: var(--pp-font-heading);
  font-size: var(--pp-text-2xl);
  color: var(--pp-text);
  margin: 0 0 var(--pp-space-2);
}
.pp-complete-modal__desc {
  color: var(--pp-text-secondary);
  margin: 0 0 var(--pp-space-5);
  line-height: 1.5;
}
.pp-complete-modal__progress {
  margin-bottom: var(--pp-space-5);
}
.pp-complete-modal__progress-bar {
  height: 8px;
  background: var(--pp-muted);
  border-radius: 999px;
  overflow: hidden;
}
.pp-complete-modal__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--pp-primary), var(--pp-secondary));
  border-radius: 999px;
  width: 0;
  transition: width 0.8s ease-out;
}
@media (prefers-reduced-motion: reduce) {
  .pp-complete-modal__progress-fill {
    transition: none;
  }
}
.pp-complete-modal__progress-text {
  margin: var(--pp-space-2) 0 0;
  font-size: var(--pp-text-sm);
  color: var(--pp-text-secondary);
}
.pp-complete-modal__cta {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-bottom: var(--pp-space-3);
}
.pp-complete-modal__cta-label {
  font-size: var(--pp-text-xs);
  opacity: 0.85;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.pp-complete-modal__cta-title {
  font-size: var(--pp-text-base);
  font-weight: 600;
}
.pp-complete-modal__stay {
  width: 100%;
}
body.pp-modal-open {
  overflow: hidden;
}

/* Program-complete variant (P28-5): celebratory gradient + brighter icon */
.pp-complete-modal--program .pp-complete-modal__content {
  background: linear-gradient(
    160deg,
    var(--pp-surface),
    color-mix(in srgb, var(--pp-secondary) 8%, var(--pp-surface))
  );
  border-color: color-mix(in srgb, var(--pp-secondary) 35%, var(--pp-border));
}
.pp-complete-modal--program .pp-complete-modal__icon {
  color: var(--pp-secondary-text);
  filter: drop-shadow(
    0 4px 12px color-mix(in srgb, var(--pp-secondary) 40%, transparent)
  );
}
.pp-complete-modal--program .pp-complete-modal__title {
  font-size: var(--pp-text-3xl);
}
.pp-complete-modal--program .pp-complete-modal__progress-fill {
  background: linear-gradient(90deg, var(--pp-secondary), var(--pp-primary));
}