body.reader-feedback-open {
  overflow: hidden;
}
.reader-feedback-hint {
  align-items: center;
  border-top: 1px solid var(--course-line);
  color: var(--course-muted);
  display: flex;
  font-size: 0.82rem;
  gap: 0.55rem;
  line-height: 1.45;
  margin: 2.4rem 0 0;
  padding: 1rem 0 0;
}

.reader-feedback-hint img {
  background: var(--course-cyan);
  border-radius: 6px;
  flex: 0 0 auto;
  padding: 3px;
}

.reader-feedback__bug {
  align-items: center;
  animation: reader-feedback-bug-in 160ms ease-out both;
  background: var(--course-cyan);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.34), 0 0 0 4px rgba(64, 224, 208, 0.12);
  cursor: pointer;
  display: inline-flex;
  height: 42px;
  justify-content: center;
  padding: 0;
  position: fixed;
  width: 42px;
  z-index: 150;
}

.reader-feedback__bug:hover,
.reader-feedback__bug:focus-visible {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 0 5px rgba(64, 224, 208, 0.22);
  outline: none;
  transform: translateY(-2px);
}

.reader-feedback__modal {
  inset: 0;
  position: fixed;
  z-index: 220;
}

.reader-feedback__backdrop {
  backdrop-filter: blur(12px);
  background: rgba(3, 6, 10, 0.76);
  border: 0;
  inset: 0;
  padding: 0;
  position: absolute;
  width: 100%;
}

.reader-feedback__dialog {
  background: linear-gradient(145deg, rgba(64, 224, 208, 0.055), transparent 34%), var(--course-surface);
  border: 1px solid var(--course-line-strong);
  border-radius: 16px;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.48);
  color: var(--course-text);
  left: 50%;
  max-height: min(820px, calc(100vh - 48px));
  max-width: calc(100vw - 32px);
  overflow: auto;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 610px;
}

.reader-feedback__dialog:focus {
  outline: none;
}

.reader-feedback__head {
  align-items: flex-start;
  border-bottom: 1px solid var(--course-line);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1.2rem 1.25rem 1.05rem;
}

.reader-feedback__identity {
  align-items: center;
  display: flex;
  gap: 0.8rem;
}

.reader-feedback__identity > div > span {
  color: var(--course-cyan);
  display: block;
  font-family: var(--course-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.reader-feedback__identity h2 {
  color: var(--course-text);
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 0;
}

.reader-feedback__mark {
  align-items: center;
  background: var(--course-cyan);
  border-radius: 10px;
  display: inline-flex;
  flex: 0 0 auto;
  height: 38px;
  justify-content: center;
  width: 38px;
}

.reader-feedback__close {
  align-items: center;
  background: var(--course-control);
  border: 1px solid var(--course-line);
  border-radius: 9px;
  color: var(--course-muted);
  cursor: pointer;
  display: inline-flex;
  flex: 0 0 auto;
  height: 36px;
  justify-content: center;
  padding: 0;
  width: 36px;
}

.reader-feedback__close:hover,
.reader-feedback__close:focus-visible {
  border-color: var(--course-cyan);
  color: var(--course-text);
  outline: none;
}

.reader-feedback__form {
  display: grid;
  gap: 1rem;
  padding: 1.2rem 1.25rem 1.25rem;
}

.reader-feedback__quote {
  background: var(--course-quote-bg);
  border: 1px solid var(--course-line);
  border-left: 3px solid var(--course-cyan);
  border-radius: 10px;
  color: var(--course-quote-text);
  margin: 0;
  padding: 0.85rem 1rem;
}

.reader-feedback__quote > span {
  color: var(--course-muted);
  display: block;
  font-family: var(--course-mono);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.reader-feedback__quote p {
  font-size: 0.9rem;
  line-height: 1.55;
  margin: 0;
  max-height: 7.5rem;
  overflow: auto;
}

.reader-feedback__categories {
  border: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  min-width: 0;
  padding: 0;
}

.reader-feedback__categories legend,
.reader-feedback__field > span {
  color: var(--course-text);
  font-size: 0.78rem;
  font-weight: 750;
  margin-bottom: 0.55rem;
  padding: 0;
  width: 100%;
}

.reader-feedback__categories label {
  cursor: pointer;
  position: relative;
}

.reader-feedback__categories input {
  height: 1px;
  opacity: 0;
  position: absolute;
  width: 1px;
}

.reader-feedback__categories label span {
  background: var(--course-control);
  border: 1px solid var(--course-line);
  border-radius: 999px;
  color: var(--course-muted);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 700;
  min-height: 34px;
  padding: 0.45rem 0.75rem;
}

.reader-feedback__categories input:checked + span {
  background: rgba(64, 224, 208, 0.12);
  border-color: var(--course-cyan);
  color: var(--course-cyan);
}

.reader-feedback__categories input:focus-visible + span {
  box-shadow: 0 0 0 3px rgba(64, 224, 208, 0.18);
  outline: none;
}

.reader-feedback__field {
  display: grid;
}

.reader-feedback__field small {
  color: var(--course-subtle);
  font-size: inherit;
  font-weight: 500;
}

.reader-feedback__field textarea {
  background: var(--course-control);
  border: 1px solid var(--course-line);
  border-radius: 10px;
  color: var(--course-text);
  font: inherit;
  font-size: 0.88rem;
  line-height: 1.5;
  min-height: 108px;
  padding: 0.75rem 0.85rem;
  resize: vertical;
}

.reader-feedback__field textarea:focus {
  border-color: var(--course-cyan);
  box-shadow: 0 0 0 3px rgba(64, 224, 208, 0.12);
  outline: none;
}

.reader-feedback__field textarea::placeholder {
  color: var(--course-subtle);
}

.reader-feedback__honeypot {
  left: -10000px;
  position: absolute;
  top: auto;
}

.reader-feedback__privacy {
  color: var(--course-subtle);
  font-size: 0.74rem;
  line-height: 1.5;
  margin: 0;
}

.reader-feedback__actions {
  align-items: center;
  border-top: 1px solid var(--course-line);
  display: flex;
  gap: 0.65rem;
  margin-top: 0.1rem;
  padding-top: 1rem;
}

.reader-feedback__status {
  color: var(--course-muted);
  flex: 1 1 auto;
  font-size: 0.78rem;
  line-height: 1.4;
  margin: 0;
}

.reader-feedback__status[data-tone="success"] {
  color: var(--course-green);
}

.reader-feedback__status[data-tone="error"] {
  color: var(--course-red);
}

.reader-feedback__cancel,
.reader-feedback__submit {
  border-radius: 9px;
  cursor: pointer;
  flex: 0 0 auto;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 800;
  min-height: 40px;
  padding: 0.62rem 0.9rem;
}

.reader-feedback__cancel {
  background: var(--course-control);
  border: 1px solid var(--course-line);
  color: var(--course-muted);
}

.reader-feedback__submit {
  background: var(--course-cyan);
  border: 1px solid var(--course-cyan);
  color: #071014;
}

.reader-feedback__cancel:hover,
.reader-feedback__cancel:focus-visible,
.reader-feedback__submit:hover,
.reader-feedback__submit:focus-visible {
  box-shadow: 0 0 0 3px rgba(64, 224, 208, 0.15);
  outline: none;
}

.reader-feedback__submit:disabled {
  cursor: wait;
  opacity: 0.68;
}

@keyframes reader-feedback-bug-in {
  from {
    opacity: 0;
    transform: translateY(5px) scale(0.92);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 640px) {
  .reader-feedback__dialog {
    border-bottom: 0;
    border-radius: 16px 16px 0 0;
    bottom: 0;
    left: 0;
    max-height: calc(100vh - 24px);
    max-width: none;
    top: auto;
    transform: none;
    width: 100%;
  }

  .reader-feedback__head,
  .reader-feedback__form {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .reader-feedback__actions {
    align-items: stretch;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
  }

  .reader-feedback__status {
    grid-column: 1 / -1;
    min-height: 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reader-feedback__bug {
    animation: none;
  }
}