/* Shared comments — Jira/GitHub-style discussion thread */

.et-comments {
  padding: 1.15rem 1.2rem 1.25rem;
  display: grid;
  gap: 0.85rem;
  /* Space below share on article pages (blog/news) that lack a section grid gap */
  margin-top: 1rem;
}

/* Exam + question detail already space children via grid gap */
.et-exam-show__main > .et-comments,
.et-qd__content > .et-comments {
  margin-top: 0;
}

.et-comments__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

.et-comments__title-wrap {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.et-comments__icon {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--et-accent, #0f766e) 14%, transparent);
  color: var(--et-accent, #0f766e);
  flex: 0 0 auto;
}

.et-comments__icon svg {
  width: 1.1rem;
  height: 1.1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.et-comments__eyebrow {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--et-text-muted);
}

.et-comments__title-wrap h2 {
  margin: 0.05rem 0 0;
  font-size: 1.08rem;
  line-height: 1.25;
  color: var(--et-text);
}

.et-comments__counts {
  font-size: 0.82rem;
  color: var(--et-text-muted);
  font-weight: 600;
}

.et-comments__counts-sep {
  margin: 0 0.3rem;
  opacity: 0.55;
}

.et-comments__lead {
  margin: 0;
  color: var(--et-text-muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.et-comments__composer {
  border: 1px solid var(--et-border);
  background: var(--et-surface-2, var(--et-surface));
  border-radius: var(--et-radius, 0.85rem);
  padding: 0.85rem 0.95rem;
}

.et-comments__login {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.et-comments__login p {
  margin: 0;
  color: var(--et-text-muted);
  font-size: 0.9rem;
}

.et-comments__form {
  display: grid;
  gap: 0.55rem;
}

/* Prevent display:grid from overriding the HTML hidden attribute */
.et-comments__form[hidden],
.et-comment__reply-panel[hidden] {
  display: none !important;
}

.et-comments__form--reply {
  margin: 0;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--et-border);
  border-radius: 0.75rem;
  background: var(--et-surface-2, var(--et-surface));
}

.et-comments__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--et-text-muted);
}

.et-comments__textarea {
  width: 100%;
  resize: vertical;
  min-height: 4.25rem;
  border: 1px solid var(--et-border);
  border-radius: 0.65rem;
  background: var(--et-surface);
  color: var(--et-text);
  padding: 0.65rem 0.8rem;
  font: inherit;
  line-height: 1.45;
}

.et-comments__textarea--reply {
  min-height: 3.4rem;
}

.et-comments__textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--et-accent, #0f766e) 45%, transparent);
  outline-offset: 1px;
  border-color: var(--et-accent, #0f766e);
}

.et-comments__form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}

.et-comments__hint {
  margin-right: auto;
  font-size: 0.75rem;
  color: var(--et-text-muted);
  font-variant-numeric: tabular-nums;
}

.et-comments__form-error {
  margin: 0;
  color: #e11d48;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
}

.et-comments__form-error[hidden] {
  display: none !important;
}

.et-comments__hp {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.et-comments__list {
  display: grid;
  gap: 0.15rem;
  margin-top: 0.15rem;
}

.et-comments__empty {
  padding: 1.15rem;
  text-align: center;
  border: 1px dashed var(--et-border);
  border-radius: var(--et-radius, 0.85rem);
  color: var(--et-text-muted);
  font-size: 0.9rem;
}

.et-comments__empty p {
  margin: 0;
}

.et-comments__more {
  display: flex;
  justify-content: center;
  padding-top: 0.35rem;
}

/* Compact comment row — avatar rail + content */
.et-comment {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.65rem;
  align-items: stretch;
  padding: 0.55rem 0 0.15rem;
}

.et-comment__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100%;
}

.et-comment__avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  overflow: hidden;
  flex: 0 0 auto;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.08);
}

.et-comment__avatar img,
.et-comment__avatar span {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  object-fit: cover;
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.et-comment__spine {
  flex: 1 1 auto;
  width: 2px;
  margin-top: 0.35rem;
  border-radius: 99px;
  background: color-mix(in srgb, var(--et-border) 85%, transparent);
  min-height: 0.5rem;
}

.et-comment:not(:has(.et-comment__children)):not(:has(.et-comment__reply-panel.is-open)) .et-comment__spine {
  opacity: 0.35;
  min-height: 0.25rem;
}

.et-comment__content {
  min-width: 0;
  padding-bottom: 0.35rem;
}

.et-comment__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.35rem;
  margin: 0 0 0.2rem;
  line-height: 1.3;
}

.et-comment__author {
  color: var(--et-text);
  font-size: 0.88rem;
  font-weight: 700;
}

.et-comment__dot {
  color: var(--et-text-muted);
  opacity: 0.55;
  font-size: 0.75rem;
}

.et-comment__meta time,
.et-comment__reply-count {
  font-size: 0.75rem;
  color: var(--et-text-muted);
  font-weight: 500;
}

.et-comment__text {
  color: var(--et-text);
  font-size: 0.9rem;
  line-height: 1.5;
  word-break: break-word;
}

.et-comment__actions {
  margin-top: 0.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.et-comment__reply-chip {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem 0.55rem 0.18rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--et-border);
  background: var(--et-surface-2, var(--et-surface));
  color: var(--et-accent, #0f766e);
  font: inherit;
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.et-comment__reply-chip svg {
  width: 0.85rem;
  height: 0.85rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.et-comment__reply-chip:hover,
.et-comment__reply-chip[aria-expanded="true"] {
  border-color: color-mix(in srgb, var(--et-accent, #0f766e) 45%, var(--et-border));
  background: color-mix(in srgb, var(--et-accent, #0f766e) 12%, transparent);
  text-decoration: none;
  color: var(--et-accent, #0f766e);
}

.et-comment__reply-chip:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--et-accent, #0f766e) 50%, transparent);
  outline-offset: 2px;
}

/* Smooth expand / collapse for reply composer */
.et-comment__reply-panel {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  margin-top: 0;
  transition:
    grid-template-rows 0.22s ease,
    opacity 0.18s ease,
    margin-top 0.22s ease;
}

.et-comment__reply-panel.is-open {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-top: 0.55rem;
}

.et-comment__reply-panel.is-open[hidden] {
  display: grid !important;
}

.et-comment__reply-inner {
  overflow: hidden;
  min-height: 0;
}

.et-comment__children {
  margin-top: 0.15rem;
  display: grid;
  gap: 0;
}

.et-comment[data-depth="1"],
.et-comment[data-depth="2"] {
  padding-top: 0.45rem;
}

.et-comment[data-depth="1"] .et-comment__avatar,
.et-comment[data-depth="2"] .et-comment__avatar {
  width: 1.75rem;
  height: 1.75rem;
}

.et-comment[data-depth="1"] .et-comment__avatar span,
.et-comment[data-depth="2"] .et-comment__avatar span {
  font-size: 0.62rem;
}

.et-comments .et-btn--sm {
  padding: 0.38rem 0.8rem;
  font-size: 0.8rem;
  border-radius: 0.65rem;
}

@media (max-width: 640px) {
  .et-comments {
    padding: 0.95rem;
    gap: 0.75rem;
  }

  .et-comment {
    grid-template-columns: 1.75rem 1fr;
    gap: 0.55rem;
  }

  .et-comment__avatar {
    width: 1.75rem;
    height: 1.75rem;
  }

  .et-comments__form-actions {
    gap: 0.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .et-comment__reply-panel,
  .et-comment__reply-chip {
    transition: none;
  }
}

html.dark .et-comments__form-error,
html[data-theme="dark"] .et-comments__form-error,
.et-body[data-theme="dark"] .et-comments__form-error {
  color: #fda4af;
}

html.dark .et-comment__spine,
html[data-theme="dark"] .et-comment__spine,
.et-body[data-theme="dark"] .et-comment__spine {
  background: color-mix(in srgb, var(--et-border) 70%, transparent);
}