.lesson-reader {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 90;
  width: min(430px, calc(100vw - 36px));
  color: var(--ink, #19202b);
  font-family: var(--font-body, "Inter", system-ui, -apple-system, "Segoe UI", sans-serif);
  font-size: 15px;
  line-height: 1.4;
}

.lesson-reader[hidden],
.lesson-reader [hidden] {
  display: none !important;
}

.lesson-reader__launcher {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  float: right;
  gap: 9px;
  border: 1px solid rgba(25, 32, 43, 0.16);
  border-radius: 999px;
  padding: 10px 17px;
  background: var(--ink, #19202b);
  color: #fff;
  box-shadow: 0 16px 42px -18px rgba(25, 32, 43, 0.56);
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.lesson-reader__launcher:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 48px -18px rgba(25, 32, 43, 0.64);
}

.lesson-reader__launcher:active {
  transform: translateY(0);
}

.lesson-reader__launcher:focus-visible,
.lesson-reader__button:focus-visible,
.lesson-reader__icon-btn:focus-visible,
.lesson-reader__rate:focus-visible {
  outline: 3px solid var(--accent-wash, #faf0db);
  outline-offset: 3px;
}

.lesson-reader__speaker {
  width: 19px;
  height: 19px;
  flex: none;
}

.lesson-reader[data-state="speaking"] .lesson-reader__speaker {
  animation: lesson-reader-pulse 1.5s ease-in-out infinite;
}

@keyframes lesson-reader-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.lesson-reader__panel {
  overflow: hidden;
  border: 1px solid var(--line, #dee4e1);
  border-radius: 18px;
  background: rgba(251, 252, 251, 0.97);
  box-shadow: 0 24px 70px -24px rgba(25, 32, 43, 0.48);
  backdrop-filter: saturate(140%) blur(16px);
}

.lesson-reader__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px 12px;
  border-bottom: 1px solid var(--line-soft, #eaeeeb);
}

.lesson-reader__copy {
  flex: 1;
  min-width: 0;
}

.lesson-reader__eyebrow {
  margin: 0 0 3px;
  color: var(--ink-3, #8b95a4);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.lesson-reader__section-field {
  position: relative;
  display: flex;
  align-items: center;
}

.lesson-reader__section {
  width: 100%;
  max-width: 100%;
  margin: 0;
  border: 0;
  border-radius: 7px;
  padding: 1px 22px 1px 0;
  background: transparent;
  color: var(--ink, #19202b);
  cursor: pointer;
  font-family: var(--font-display, "Fraunces", Georgia, serif);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
  appearance: none;
  -webkit-appearance: none;
}

.lesson-reader__section:hover:not(:disabled) {
  color: var(--accent, #d7942a);
}

.lesson-reader__section:disabled {
  cursor: default;
}

.lesson-reader__section:focus-visible {
  outline: 3px solid var(--accent-wash, #faf0db);
  outline-offset: 2px;
}

.lesson-reader__section-caret {
  position: absolute;
  right: 2px;
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--ink-3, #8b95a4);
  pointer-events: none;
}

.lesson-reader__section:disabled + .lesson-reader__section-caret {
  display: none;
}

.lesson-reader__head-actions {
  display: flex;
  flex: none;
  gap: 8px;
}

.lesson-reader__icon-btn {
  display: grid;
  width: 32px;
  height: 32px;
  flex: none;
  place-items: center;
  border: 1px solid var(--line, #dee4e1);
  border-radius: 9px;
  background: var(--surface, #fbfcfb);
  color: var(--ink-2, #586375);
  cursor: pointer;
  font: inherit;
  line-height: 1;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.lesson-reader__icon-btn:hover {
  border-color: #c8d4ce;
  color: var(--ink, #19202b);
}

.lesson-reader__icon-btn svg {
  width: 16px;
  height: 16px;
}

.lesson-reader__close {
  font-size: 20px;
}

.lesson-reader__body {
  padding: 14px 16px 16px;
}

.lesson-reader__status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--ink-2, #586375);
  font-size: 12.5px;
  font-weight: 600;
}

.lesson-reader__state {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
}

.lesson-reader__state-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--ink-3, #8b95a4);
}

.lesson-reader[data-state="speaking"] .lesson-reader__state-dot {
  background: var(--health, #11897a);
  box-shadow: 0 0 0 4px var(--health-wash, #e3f1ed);
}

.lesson-reader[data-state="paused"] .lesson-reader__state-dot {
  background: var(--accent, #d7942a);
  box-shadow: 0 0 0 4px var(--accent-wash, #faf0db);
}

.lesson-reader[data-state="error"] .lesson-reader__state-dot {
  background: var(--disorder, #7c4da6);
  box-shadow: 0 0 0 4px var(--disorder-wash, #f0e8f7);
}

.lesson-reader__counter {
  flex: none;
  color: var(--ink-3, #8b95a4);
  font-variant-numeric: tabular-nums;
}

.lesson-reader__controls {
  display: grid;
  grid-template-columns: 42px minmax(110px, 1fr) 42px 42px;
  gap: 8px;
}

.lesson-reader__button {
  display: inline-flex;
  min-width: 0;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--line, #dee4e1);
  border-radius: 11px;
  padding: 8px 10px;
  background: var(--surface, #fbfcfb);
  color: var(--ink, #19202b);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.lesson-reader__button:hover:not(:disabled) {
  border-color: #c8d4ce;
  background: #fff;
}

.lesson-reader__button:disabled {
  cursor: default;
  opacity: 0.42;
}

.lesson-reader__button--primary {
  border-color: var(--ink, #19202b);
  background: var(--ink, #19202b);
  color: #fff;
}

.lesson-reader__button--primary:hover:not(:disabled) {
  border-color: #303946;
  background: #303946;
}

.lesson-reader__icon {
  width: 17px;
  height: 17px;
  flex: none;
}

.lesson-reader__settings {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 11px;
  color: var(--ink-2, #586375);
  font-size: 12.5px;
  font-weight: 600;
}

.lesson-reader__rate {
  min-height: 34px;
  border: 1px solid var(--line, #dee4e1);
  border-radius: 9px;
  padding: 5px 28px 5px 10px;
  background: var(--surface, #fbfcfb);
  color: var(--ink, #19202b);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 650;
}

.lesson-reader__sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

.lesson-reader-current-block {
  border-radius: 7px;
  background: rgba(240, 192, 99, 0.22) !important;
  box-shadow: 0 0 0 5px rgba(240, 192, 99, 0.12);
}

::highlight(studydesk-reader-sentence) {
  background-color: rgba(240, 192, 99, 0.25);
  color: inherit;
}

::highlight(studydesk-reader-word) {
  background-color: rgba(215, 148, 42, 0.42);
  color: inherit;
  text-decoration: underline 2px solid rgba(122, 84, 16, 0.72);
  text-underline-offset: 3px;
}

@media (max-width: 640px) {
  .lesson-reader {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    width: calc(100vw - 24px - env(safe-area-inset-left) - env(safe-area-inset-right));
  }

  .lesson-reader__launcher {
    min-height: 44px;
  }

  .lesson-reader__panel {
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lesson-reader__launcher,
  .lesson-reader__button {
    transition: none;
  }

  .lesson-reader[data-state="speaking"] .lesson-reader__speaker {
    animation: none;
  }
}

@media print {
  .lesson-reader {
    display: none !important;
  }
}