:root {
  --board-bg: #fff8f1;
  --board-card: rgba(255, 255, 255, 0.95);
  --board-text: #5b391f;
  --board-muted: #8a6a55;
  --board-line: #f0d8c2;
  --board-brand: #ef7f38;
  --board-brand-soft: #fff0de;
  --board-mint: #ffb65c;
  --board-warn: #ba6b21;
  --board-danger: #b64f45;
  --board-shadow: 0 16px 32px rgba(239, 127, 56, 0.14);
  --board-brand-rgb: 239, 127, 56;
  --board-accent-rgb: 255, 182, 92;
  --board-radius-lg: 20px;
  --board-radius-md: 14px;
  --board-radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body.board-page {
  min-height: 100vh;
  font-family: 'Zen Maru Gothic', sans-serif;
  color: var(--board-text);
  background:
    radial-gradient(980px 520px at 92% -18%, rgba(var(--board-brand-rgb), 0.16), transparent 58%),
    radial-gradient(860px 480px at -10% 0%, rgba(var(--board-accent-rgb), 0.18), transparent 62%),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.34),
      rgba(255, 255, 255, 0.34) 40px,
      rgba(240, 216, 194, 0.16) 40px,
      rgba(240, 216, 194, 0.16) 41px
    ),
    var(--board-bg);
}

.board-shell {
  width: min(1180px, calc(100% - 1.5rem));
  margin: 1.25rem auto 4rem;
  display: grid;
  gap: 0.95rem;
}

.board-card {
  background: var(--board-card);
  border: 1px solid rgba(var(--board-brand-rgb), 0.1);
  border-radius: var(--board-radius-lg);
  box-shadow: var(--board-shadow);
}

.board-hero {
  padding: 1.2rem 1.25rem 1.1rem;
  display: grid;
  gap: 0.95rem;
}

.board-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.95fr);
  gap: 1rem;
  align-items: start;
}

.board-hero-copy {
  display: grid;
  gap: 0.85rem;
}

.board-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--board-brand);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.board-hero h1,
.board-form-card h1,
.board-thread-header h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3.8vw, 2.55rem);
  line-height: 1.2;
}

.board-hero p,
.board-helper-text,
.board-empty,
.board-form-note {
  color: var(--board-muted);
  line-height: 1.68;
}

.board-helper-text,
.board-form-note,
.board-search-result-note {
  margin: 0;
}

.board-hero-actions,
.board-filter-row,
.board-form-actions,
.board-thread-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.board-button,
.board-button-secondary,
.board-filter-chip,
.board-auth-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.board-button,
.board-auth-link {
  background: linear-gradient(135deg, var(--board-brand), var(--board-mint));
  color: #fff;
  padding: 0.78rem 1.15rem;
  box-shadow: 0 12px 22px rgba(var(--board-brand-rgb), 0.24);
}

.board-button-secondary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--board-text);
  border: 1px solid var(--board-line);
  padding: 0.78rem 1.15rem;
}

.board-button:hover,
.board-button-secondary:hover,
.board-filter-chip:hover,
.board-auth-link:hover {
  transform: translateY(-1px);
}

.board-search-panel {
  display: grid;
  gap: 0.65rem;
  padding: 0.95rem;
  border-radius: var(--board-radius-md);
  border: 1px solid var(--board-line);
  background: rgba(255, 251, 245, 0.96);
}

.board-search-label {
  font-weight: 700;
}

.board-search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.55rem;
  align-items: center;
}

.board-search-note,
.board-search-result-note {
  color: var(--board-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.board-reset-link {
  color: var(--board-brand);
  font-weight: 700;
  text-decoration: none;
}

.board-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.board-stat {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--board-line);
  border-radius: var(--board-radius-md);
  padding: 0.8rem 0.95rem;
}

.board-stat-label {
  margin: 0 0 0.3rem;
  color: var(--board-muted);
  font-size: 0.84rem;
}

.board-stat-value {
  margin: 0;
  font-size: clamp(1.2rem, 2.8vw, 1.65rem);
  font-weight: 700;
}

.board-section {
  padding: 1rem 1.1rem 1.1rem;
}

.board-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.board-section-head-stack {
  align-items: flex-end;
}

.board-section-head h2,
.board-form-card h2,
.board-replies h2,
.board-reply-form h2 {
  margin: 0;
  font-size: 1.12rem;
}

.board-category-grid,
.board-thread-list,
.board-reply-list {
  display: grid;
  gap: 0.7rem;
}

.board-category-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.board-category-card,
.board-thread-card,
.board-reply-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--board-line);
  border-radius: var(--board-radius-md);
}

.board-category-card {
  display: grid;
  gap: 0.45rem;
  padding: 0.85rem 0.95rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.board-category-card:hover,
.board-thread-card:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--board-brand-rgb), 0.24);
  box-shadow: 0 14px 24px rgba(var(--board-brand-rgb), 0.14);
}

.board-category-card.is-active {
  background: linear-gradient(180deg, rgba(255, 243, 228, 0.95), rgba(255, 255, 255, 0.95));
  border-color: rgba(var(--board-brand-rgb), 0.28);
}

.board-category-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.board-category-card h3,
.board-thread-card h3,
.board-reply-author {
  margin: 0;
}

.board-category-meta,
.board-thread-meta,
.board-reply-meta,
.board-thread-submeta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  color: var(--board-muted);
  font-size: 0.86rem;
}

.board-link-inline {
  color: var(--board-brand);
  font-weight: 700;
  text-decoration: none;
}

.board-link-inline:hover {
  text-decoration: underline;
}

.board-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.33rem 0.68rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.board-chip-category {
  background: rgba(var(--board-accent-rgb), 0.2);
  color: #a45d16;
}

.board-chip-type,
.board-chip-member {
  background: rgba(91, 57, 31, 0.08);
  color: var(--board-text);
}

.board-chip-guest {
  background: var(--board-brand-soft);
  color: var(--board-brand);
}

.board-chip-warning {
  background: rgba(186, 107, 33, 0.16);
  color: #985413;
}

.board-chip-status-waiting {
  background: rgba(186, 107, 33, 0.14);
  color: #985413;
}

.board-chip-status-done {
  background: rgba(var(--board-accent-rgb), 0.18);
  color: #a45d16;
}

.board-chip-visibility {
  background: rgba(91, 57, 31, 0.08);
  color: var(--board-text);
}

.board-chip-official {
  background: rgba(var(--board-brand-rgb), 0.12);
  color: var(--board-brand);
}

.board-filter-row {
  margin-top: 0.15rem;
}

.board-filter-chip {
  padding: 0.62rem 0.92rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--board-line);
  color: var(--board-text);
}

.board-filter-chip.is-active {
  background: linear-gradient(135deg, var(--board-brand), var(--board-mint));
  color: #fff;
  border-color: transparent;
}

.board-thread-list {
  gap: 0.65rem;
}

.board-thread-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  gap: 1rem;
  padding: 0.95rem 1rem;
  align-items: start;
}

.board-thread-main {
  min-width: 0;
  display: grid;
  gap: 0.55rem;
}

.board-thread-card a.board-thread-link,
.board-thread-header a {
  color: inherit;
  text-decoration: none;
}

.board-thread-link:hover {
  color: var(--board-brand);
}

.board-thread-card h3 {
  font-size: 1.06rem;
  line-height: 1.42;
}

.board-thread-number {
  font-weight: 700;
  color: var(--board-text);
}

.board-thread-summary {
  margin: 0;
  color: var(--board-muted);
  line-height: 1.62;
}

.board-thread-status,
.board-reply-preview {
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  line-height: 1.62;
}

.board-reply-preview {
  background: rgba(var(--board-accent-rgb), 0.12);
  border: 1px solid rgba(var(--board-accent-rgb), 0.22);
  color: var(--board-text);
}

.board-thread-status {
  background: rgba(var(--board-brand-rgb), 0.07);
  border: 1px solid rgba(var(--board-brand-rgb), 0.12);
  color: var(--board-muted);
}

.board-thread-latest-label {
  display: inline-block;
  margin-right: 0.45rem;
  font-weight: 700;
  color: var(--board-warn);
}

.board-thread-side {
  display: grid;
  gap: 0.3rem;
  justify-items: center;
  align-content: center;
  min-height: 100%;
  padding-left: 0.9rem;
  border-left: 1px dashed rgba(var(--board-brand-rgb), 0.18);
}

.board-thread-count {
  font-size: 1.45rem;
  line-height: 1;
  font-weight: 700;
}

.board-thread-side-label {
  font-size: 0.74rem;
  color: var(--board-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.board-thread-side-link {
  color: var(--board-brand);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.board-like-form {
  margin: 0;
}

.board-like-button {
  appearance: none;
  border: 1px solid rgba(var(--board-brand-rgb), 0.18);
  border-radius: 999px;
  background: #fff8f1;
  color: var(--board-brand);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.board-like-button:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--board-brand-rgb), 0.32);
}

.board-like-button.is-liked {
  background: linear-gradient(135deg, rgba(var(--board-brand-rgb), 0.16), rgba(var(--board-accent-rgb), 0.16));
  border-color: rgba(var(--board-brand-rgb), 0.3);
}

.board-form-card,
.board-thread-wrap {
  padding: 1.15rem 1.2rem;
}

.board-form {
  display: grid;
  gap: 0.9rem;
}

.board-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.board-field {
  display: grid;
  gap: 0.45rem;
}

.board-field label {
  font-weight: 700;
}

.board-input,
.board-select,
.board-textarea {
  width: 100%;
  border: 1px solid var(--board-line);
  border-radius: 12px;
  background: #fffdfa;
  color: var(--board-text);
  padding: 0.82rem 0.92rem;
  font: inherit;
}

.board-input:focus,
.board-select:focus,
.board-textarea:focus {
  outline: 2px solid rgba(var(--board-brand-rgb), 0.14);
  border-color: rgba(var(--board-brand-rgb), 0.42);
}

.board-textarea {
  min-height: 190px;
  resize: vertical;
}

.board-alert,
.board-success {
  border-radius: 14px;
  padding: 0.95rem 1rem;
}

.board-alert {
  background: rgba(182, 69, 61, 0.08);
  border: 1px solid rgba(182, 69, 61, 0.16);
  color: #8e302a;
}

.board-success {
  background: rgba(var(--board-accent-rgb), 0.16);
  border: 1px solid rgba(var(--board-brand-rgb), 0.18);
  color: #9a5718;
}

.board-alert ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.board-alert-actions {
  margin-top: 0.8rem;
}

.board-thread-header {
  display: grid;
  gap: 0.75rem;
}

.board-thread-body,
.board-reply-body {
  color: var(--board-text);
  white-space: pre-wrap;
}

.board-thread-body {
  margin-top: 0.35rem;
  line-height: 1.85;
}

.board-reply-card {
  padding: 0.95rem 1rem;
  display: grid;
  gap: 0.75rem;
}

.board-reply-card-official {
  background: linear-gradient(135deg, rgba(255, 244, 229, 0.94), rgba(255, 250, 241, 0.92));
}

.board-author-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.board-author-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.board-author-link:hover .board-reply-author {
  text-decoration: underline;
}

.board-author-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(var(--board-brand-rgb), 0.14);
  background: #fff;
}

.board-empty {
  padding: 0.7rem 0 0;
}

.board-login-panel,
.board-admin-note,
.board-inline-note {
  padding: 0.9rem 0.95rem;
  border-radius: 12px;
  color: var(--board-text);
  line-height: 1.65;
}

.board-login-panel,
.board-inline-note {
  background: rgba(var(--board-brand-rgb), 0.07);
  border: 1px solid rgba(var(--board-brand-rgb), 0.12);
}

.board-admin-note {
  background: rgba(91, 57, 31, 0.06);
  border: 1px solid rgba(91, 57, 31, 0.1);
}

.board-inline-note a {
  color: var(--board-brand);
  font-weight: 700;
}

.board-thread-actions-row {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 0.9rem;
}

.board-fab {
  position: fixed;
  right: 1.05rem;
  bottom: max(1.05rem, calc(env(safe-area-inset-bottom) + 1.05rem));
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--board-brand), var(--board-mint));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.9rem;
  box-shadow: 0 18px 30px rgba(var(--board-brand-rgb), 0.24);
  z-index: 20;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.board-fab:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 22px 34px rgba(var(--board-brand-rgb), 0.28);
}

body.pote-has-bottom-menu .board-fab {
  bottom: max(6.35rem, calc(env(safe-area-inset-bottom, 0px) + 6.35rem));
}

@media (max-width: 960px) {
  .board-hero-grid,
  .board-category-grid {
    grid-template-columns: 1fr 1fr;
  }

  .board-hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .board-shell {
    width: min(100% - 0.75rem, 100%);
    margin-top: 0.85rem;
    gap: 0.75rem;
  }

  .board-hero,
  .board-section,
  .board-form-card,
  .board-thread-wrap {
    padding: 0.95rem;
  }

  .board-section-head,
  .board-section-head-stack {
    flex-direction: column;
    align-items: flex-start;
  }

  .board-search-form,
  .board-thread-card,
  .board-form-grid,
  .board-category-grid {
    grid-template-columns: 1fr;
  }

  .board-stats,
  .board-filter-row {
    display: none;
  }

  .board-topics-section .board-section-head {
    gap: 0.35rem;
    margin-bottom: 0.65rem;
  }

  .board-topics-section .board-helper-text {
    font-size: 0.8rem;
    line-height: 1.45;
  }

  .board-category-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
  }

  .board-category-card {
    flex: 0 1 auto;
    max-width: 100%;
    padding: 0.46rem 0.72rem;
    border-radius: 999px;
    gap: 0;
  }

  .board-category-title-row {
    justify-content: flex-start;
    gap: 0.38rem;
  }

  .board-category-card h3 {
    font-size: 0.84rem;
    line-height: 1.2;
    white-space: normal;
  }

  .board-category-card .board-form-note {
    display: none;
  }

  .board-filter-count {
    min-width: auto;
    padding: 0.08rem 0.42rem;
    border-radius: 999px;
    background: rgba(var(--board-accent-rgb), 0.18);
    color: #a45d16;
    font-size: 0.72rem;
    line-height: 1.1;
  }

  .board-category-card.is-active .board-filter-count {
    background: rgba(var(--board-brand-rgb), 0.14);
    color: var(--board-brand);
  }

  .board-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .board-thread-side {
    grid-auto-flow: column;
    justify-content: flex-start;
    align-items: center;
    justify-items: start;
    min-height: auto;
    padding-left: 0;
    padding-top: 0.75rem;
    border-left: 0;
    border-top: 1px dashed rgba(var(--board-brand-rgb), 0.18);
  }

  .board-fab {
    width: 56px;
    height: 56px;
    right: 0.8rem;
    font-size: 1.75rem;
  }
}

@media (max-width: 520px) {
  .board-stats {
    grid-template-columns: 1fr;
  }
}

body.board-modal-open {
  overflow: hidden;
}

.board-shell-chat,
.board-shell-thread {
  width: min(920px, calc(100% - 1rem));
}

.board-chat-hero {
  padding: 1.4rem;
  display: grid;
  gap: 1rem;
}

.board-chat-hero-head,
.board-chat-room-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.board-chat-hero h1,
.board-chat-room-head h1 {
  margin: 0.3rem 0 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.board-filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
}

.board-chat-list-card,
.board-chat-room-card,
.board-admin-reply-card,
.board-compose-page-card {
  padding: 1.2rem;
}

.board-chat-list {
  display: grid;
  gap: 0.8rem;
}

.board-chat-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1rem;
  border-radius: 22px;
  border: 1px solid var(--board-line);
  background: rgba(255, 255, 255, 0.94);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.board-chat-row:hover {
  transform: translateY(-1px);
  border-color: rgba(var(--board-brand-rgb), 0.24);
  box-shadow: 0 18px 30px rgba(var(--board-brand-rgb), 0.14);
}

.board-chat-row.is-replied {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 244, 229, 0.92));
}

.board-chat-avatar {
  width: 56px;
  height: 56px;
}

.board-chat-main {
  min-width: 0;
  display: grid;
  gap: 0.45rem;
}

.board-chat-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.board-chat-line h3 {
  margin: 0;
  font-size: 1rem;
}

.board-chat-line span {
  color: var(--board-muted);
  font-size: 0.84rem;
  white-space: nowrap;
}

.board-chat-title,
.board-chat-snippet {
  margin: 0;
}

.board-chat-title {
  font-weight: 700;
  color: var(--board-text);
}

.board-chat-snippet {
  color: var(--board-muted);
  line-height: 1.7;
}

.board-chat-reply-preview,
.board-chat-waiting,
.board-chat-wait-card {
  border-radius: 16px;
  padding: 0.85rem 0.95rem;
  line-height: 1.7;
}

.board-chat-reply-preview {
  background: rgba(var(--board-brand-rgb), 0.08);
  border: 1px solid rgba(var(--board-brand-rgb), 0.12);
}

.board-chat-waiting,
.board-chat-wait-card {
  background: rgba(255, 140, 66, 0.12);
  border: 1px solid rgba(255, 140, 66, 0.16);
  color: #9d5a24;
}

.board-chat-empty {
  margin: 0;
}

.board-chat-room-card,
.board-thread-empty-card {
  display: grid;
  gap: 1rem;
}

.board-chat-room-meta {
  margin-top: -0.2rem;
}

.board-chat-timeline {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 244, 229, 0.72)),
    repeating-linear-gradient(180deg, transparent, transparent 52px, rgba(var(--board-brand-rgb), 0.03) 52px, rgba(var(--board-brand-rgb), 0.03) 53px);
  border: 1px solid rgba(var(--board-brand-rgb), 0.08);
}

.board-message-row {
  display: flex;
  gap: 0.75rem;
}

.board-message-row-self {
  justify-content: flex-end;
}

.board-message-row-pote {
  justify-content: flex-start;
  align-items: flex-start;
}

.board-message-stack {
  max-width: min(100%, 620px);
  display: grid;
  gap: 0.35rem;
}

.board-message-stack-self {
  justify-items: end;
}

.board-message-meta-line {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--board-muted);
  font-size: 0.82rem;
}

.board-message-stack-self .board-message-meta-line {
  justify-content: flex-end;
}

.board-message-name {
  font-weight: 700;
  color: var(--board-text);
}

.board-message-avatar {
  width: 44px;
  height: 44px;
  margin-top: 1.35rem;
}

.board-message-bubble {
  padding: 0.95rem 1rem;
  border-radius: 20px;
  line-height: 1.8;
  word-break: break-word;
  box-shadow: 0 10px 18px rgba(91, 57, 31, 0.08);
}

.board-message-bubble-self {
  background: linear-gradient(135deg, var(--board-brand), var(--board-mint));
  color: #fff;
  border-bottom-right-radius: 8px;
}

.board-message-bubble-pote {
  background: #fff;
  border: 1px solid var(--board-line);
  color: var(--board-text);
  border-bottom-left-radius: 8px;
}

.board-message-body {
  white-space: pre-wrap;
}

.board-admin-reply-card {
  display: grid;
  gap: 1rem;
}

.board-admin-compose-form .board-textarea,
.board-compose-form .board-textarea {
  min-height: 170px;
}

.board-compose-form {
  gap: 0.95rem;
}

.board-compose-actions {
  margin-top: 0.2rem;
}

.board-honeypot {
  display: none;
}

.board-compose-modal {
  position: fixed;
  inset: 0;
  z-index: 13010;
}

.board-compose-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(88, 56, 31, 0.46);
  backdrop-filter: blur(6px);
}

.board-compose-dialog {
  position: relative;
  width: min(680px, calc(100% - 1rem));
  max-height: min(90vh, 860px);
  margin: min(8vh, 4rem) auto 0;
  padding: 1.25rem;
  overflow: auto;
  z-index: 1;
}

.board-compose-dialog h2 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.board-compose-close {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(var(--board-brand-rgb), 0.1);
  color: var(--board-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  line-height: 1;
}

.board-compose-form-page {
  margin-top: 1rem;
}

.board-compose-alert {
  margin-top: 1rem;
}

@media (max-width: 780px) {
  .board-shell-chat,
  .board-shell-thread {
    width: min(100% - 0.75rem, 100%);
  }

  .board-chat-hero-head,
  .board-chat-room-head {
    flex-direction: column;
  }

  .board-chat-row {
    grid-template-columns: 48px minmax(0, 1fr);
    padding: 0.9rem;
  }

  .board-chat-avatar {
    width: 48px;
    height: 48px;
  }

  .board-chat-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .board-chat-timeline {
    padding: 0.8rem;
  }

  .board-message-stack {
    max-width: 100%;
  }

  .board-message-avatar {
    width: 38px;
    height: 38px;
    margin-top: 1.45rem;
  }

  .board-compose-dialog {
    width: min(100% - 0.75rem, 100%);
    margin-top: 4vh;
    padding: 1rem;
  }
}