/* Modern layout with BBS accents: monospace headings, bracketed tags,
   table-style board listings and a phosphor-green accent. */
:root {
  --bg: #f4f1ea;
  --surface: #fffdf8;
  --text: #1f2421;
  --muted: #68706b;
  --line: #d9d4c7;
  --accent: #1d7a46;
  --accent-text: #ffffff;
  --accent-soft: #e2f1e7;
  --danger: #a4262c;
  --danger-soft: #fbe9ea;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1412;
    --surface: #171d1a;
    --text: #dfe6e1;
    --muted: #8d9891;
    --line: #2a332e;
    --accent: #4fd187;
    --accent-text: #08130c;
    --accent-soft: #173324;
    --danger: #ff8a8f;
    --danger-soft: #3a1a1c;
  }
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--sans);
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
h1,
h2,
.panel-title,
.logo,
.section-title {
  font-family: var(--mono);
  letter-spacing: -0.01em;
}
h1 {
  font-size: 1.35rem;
  margin: 0 0 0.6rem;
}
h2 {
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
}
h1::before,
h2::before {
  content: '> ';
  color: var(--accent);
}
p {
  margin: 0 0 0.75rem;
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 0.85rem;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- frame ---------- */
.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border-bottom: 2px solid var(--line);
}
.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.logo:hover {
  text-decoration: none;
}
.logo-mark {
  color: var(--accent);
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  font-family: var(--mono);
  font-size: 0.9rem;
}
.nav a {
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  color: var(--text);
}
.nav a:hover {
  background: var(--accent-soft);
  text-decoration: none;
}
.nav a.active {
  background: var(--accent);
  color: var(--accent-text);
}
.badge {
  display: inline-block;
  min-width: 1.3em;
  margin-left: 0.35em;
  padding: 0 0.35em;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
  font-size: 0.75rem;
  text-align: center;
}
.frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: 1rem;
  max-width: 62rem;
  margin: 1rem auto;
  padding: 0 1rem;
}
.frame-solo {
  grid-template-columns: minmax(0, 1fr);
  max-width: 30rem;
}
.foot {
  padding: 1.5rem 1rem;
  text-align: center;
  color: var(--muted);
  font: 0.8rem var(--mono);
}
@media (max-width: 760px) {
  .frame {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- surfaces ---------- */
.card,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.panel {
  padding: 0.75rem;
  font-size: 0.9rem;
}
.panel-title {
  margin: 0 0 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px dashed var(--line);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--muted);
}
.panel-title::before {
  content: none;
}
.section-title {
  margin: 1.25rem 0 0.5rem;
}
.plain {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
}
.plain li {
  padding: 0.15rem 0;
}
.dot {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--accent);
}
.on {
  color: var(--accent);
}
.tag {
  display: inline-block;
  margin-right: 0.4em;
  padding: 0 0.4em;
  border: 1px solid var(--line);
  border-radius: 3px;
  font: 0.72rem var(--mono);
  color: var(--muted);
  vertical-align: middle;
}
.tag::before {
  content: '[';
}
.tag::after {
  content: ']';
}
.tag-on {
  color: var(--accent);
  border-color: var(--accent);
}
.crumbs {
  font: 0.85rem var(--mono);
  color: var(--muted);
}
.error,
.notice {
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
}
.error {
  background: var(--danger-soft);
  color: var(--danger);
}
.notice {
  background: var(--accent-soft);
}

/* ---------- forms ---------- */
.stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: stretch;
}
.stack > button {
  align-self: flex-start;
}
.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.row.spread {
  justify-content: space-between;
}
.row > input:not([type='file']) {
  flex: 1;
}
label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  font-weight: 600;
}
label.check {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  font-weight: 400;
}
.hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.8rem;
}
input,
textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
input[type='checkbox'] {
  width: auto;
}
input[type='file'] {
  width: auto;
  max-width: 100%;
  flex: 1;
  padding: 0.3rem;
  font-size: 0.85rem;
}
textarea {
  resize: vertical;
}
input:focus-visible,
textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
button,
.button {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: var(--accent);
  color: var(--accent-text);
  font: 600 0.9rem var(--mono);
  cursor: pointer;
}
button:hover,
.button:hover {
  filter: brightness(1.1);
  text-decoration: none;
}
button.secondary,
.button.secondary {
  background: transparent;
  color: var(--accent);
}
button.link {
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font: inherit;
}
button.link.muted {
  color: var(--muted);
  font-size: 0.85rem;
}
.narrow {
  margin-top: 2rem;
}

/* ---------- people ---------- */
.avatar {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 1.1rem var(--mono);
  object-fit: cover;
}
.avatar-sm {
  width: 1.8rem;
  height: 1.8rem;
  font-size: 0.85rem;
}
.avatar-lg {
  width: 6rem;
  height: 6rem;
  font-size: 2.5rem;
}
.user {
  font-weight: 600;
}
.people {
  list-style: none;
  margin: 0;
  padding: 0;
}
.people li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-top: 1px dashed var(--line);
}
.people li:first-child {
  border-top: 0;
}
.profile {
  display: flex;
  gap: 1rem;
}
.profile-body {
  min-width: 0;
  flex: 1;
}
@media (max-width: 480px) {
  .profile {
    flex-direction: column;
  }
}

/* ---------- feed ---------- */
.rich {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0.4rem 0;
}
.post-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.4rem;
}
.post-image {
  display: block;
  max-width: 100%;
  max-height: 32rem;
  margin: 0.5rem 0;
  border-radius: 4px;
}
.post-foot {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
}
.chip {
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: 0.85rem var(--mono);
}
.chip-on {
  border-color: var(--accent);
  color: var(--accent);
}
.comment {
  display: flex;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border-top: 1px dashed var(--line);
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
  font: 0.9rem var(--mono);
}
.tabs a {
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
}
.tabs a.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.pager {
  display: flex;
  justify-content: space-between;
  margin: 0.75rem 0;
  font: 0.9rem var(--mono);
}

/* ---------- boards ---------- */
.listing {
  width: 100%;
  border-collapse: collapse;
}
.listing th {
  padding: 0.3rem 0.5rem;
  border-bottom: 2px solid var(--line);
  font: 0.75rem var(--mono);
  text-transform: uppercase;
  text-align: left;
  color: var(--muted);
}
.listing td {
  padding: 0.55rem 0.5rem;
  border-bottom: 1px dashed var(--line);
  vertical-align: top;
}
.listing .num {
  width: 5rem;
  text-align: right;
  font-family: var(--mono);
}
.listing .title {
  font-weight: 600;
}
.reply {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1rem;
}
.reply-author {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
  padding-right: 0.75rem;
  border-right: 1px dashed var(--line);
  overflow-wrap: anywhere;
}
@media (max-width: 560px) {
  .reply {
    grid-template-columns: minmax(0, 1fr);
  }
  .reply-author {
    flex-direction: row;
    align-items: center;
    border-right: 0;
  }
}

/* ---------- chat and messages ---------- */
.chat-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 10rem;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.chat-log {
  height: 24rem;
  margin: 0;
  padding: 0.5rem 0.75rem;
  overflow-y: auto;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  font: 0.9rem/1.6 var(--mono);
}
.chat-text {
  overflow-wrap: anywhere;
}
.chat-people {
  font-size: 0.9rem;
}
@media (max-width: 560px) {
  .chat-cols {
    grid-template-columns: minmax(0, 1fr);
  }
}
.dm-log {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 28rem;
  margin-bottom: 0.75rem;
  overflow-y: auto;
}
.dm {
  align-self: flex-start;
  max-width: 80%;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
}
.dm-mine {
  align-self: flex-end;
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dm .rich {
  margin: 0;
}
.convo {
  flex: 1;
  min-width: 0;
  color: var(--text);
}
.convo:hover {
  text-decoration: none;
}
.clip {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.unread strong,
.notes .unread a {
  color: var(--accent);
}
.unread::before {
  content: '●';
  color: var(--accent);
  margin-right: 0.3rem;
}
.invites code {
  display: inline-block;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  background: var(--bg);
  font-size: 0.8rem;
  overflow-wrap: anywhere;
  cursor: pointer;
}
.invites code.copied {
  outline: 2px solid var(--accent);
}