:root {
  --bg: #f7f7f8;
  --card: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b6b70;
  --line: #d9d9de;
  --accent: #563acc;
  --accent-soft: #ece8fb;
  --start: #e8a317;
  --error-bg: #fde8e8;
  --error-fg: #8a1c1c;
  --radius: 10px;
  --maxw: 720px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191b22;
    --card: #23252f;
    --fg: #e8e8ec;
    --muted: #9a9aa5;
    --line: #363845;
    --accent: #9d8cff;
    --accent-soft: #2c2a45;
    --start: #f0b429;
    --error-bg: #3a1f1f;
    --error-fg: #ffb4b4;
  }
}

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--fg); }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding: 0 12px 4rem;
}
a { color: var(--accent); }
img { max-width: 100%; }
.muted { color: var(--muted); }

.top, main, .bottom { max-width: var(--maxw); margin: 0 auto; }
.top { padding: 1.5rem 0 1rem; }
.top h1 { font-size: 1.4rem; margin: 0 0 .75rem; }
.top h1 a { color: inherit; text-decoration: none; }
#form { display: flex; gap: .5rem; }
#form input {
  flex: 1; min-width: 0;
  font: inherit; padding: .55rem .75rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); color: var(--fg);
}
button {
  font: inherit; cursor: pointer;
  padding: .5rem .9rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); color: var(--fg);
}
#form button { background: var(--accent); color: #fff; border-color: var(--accent); }
#status { min-height: 1.5em; margin: .5rem 0 0; color: var(--muted); font-size: .9rem; }
#status.busy::after { content: ""; display: inline-block; width: .8em; height: .8em; margin-left: .4em; border: 2px solid var(--muted); border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }
#home-row, #share-row { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: .4rem 0 0; font-size: .85rem; color: var(--muted); }
#home-row input, #share-row input { font: inherit; padding: .25rem .5rem; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--fg); }
#home-row input.attention { outline: 2px solid var(--start); }
#share-row { margin-top: .5rem; }
#share-row[hidden] { display: none; }
#share-link { flex: 1 1 24rem; min-width: 0; font-size: 1rem; }
#toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-top: .5rem; }
#toolbar[hidden] { display: none; }
#toolbar button { font-size: .85rem; padding: .3rem .7rem; }
#toolbar .save { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-left: auto; font-size: .85rem; }
#toolbar .save label { display: inline-flex; align-items: center; gap: .3rem; color: var(--muted); cursor: pointer; }
#toolbar .save input { margin: 0; }

.error {
  background: var(--error-bg); color: var(--error-fg);
  padding: .8rem 1rem; border-radius: var(--radius);
}

/* Thread layout */
.node { position: relative; }
.node.main > .card { border-left: 3px solid var(--accent); }
.node.fork > .card { border-left: 3px solid var(--line); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .8rem 1rem;
  margin: 0 0 .6rem;
}
.card.start { box-shadow: 0 0 0 2px var(--start); }
.card header { display: flex; align-items: center; gap: .6rem; margin-bottom: .4rem; }
.avatar { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; background: var(--line); }
.who { display: flex; flex-direction: column; min-width: 0; flex: 1; line-height: 1.25; }
.name { font-weight: 600; color: inherit; text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.handle { color: var(--muted); font-size: .85rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.time { color: var(--muted); font-size: .85rem; text-decoration: none; white-space: nowrap; }
.time:hover { text-decoration: underline; }

.content { overflow-wrap: anywhere; }
.content p { margin: 0 0 .6em; }
.content p:last-child { margin-bottom: 0; }
.content pre { overflow-x: auto; background: var(--bg); padding: .5rem; border-radius: 6px; }
.content blockquote { margin: .4em 0; padding-left: .8em; border-left: 3px solid var(--line); color: var(--muted); }
.content .invisible { display: none; }
.content .ellipsis::after { content: "…"; }
img.emoji { height: 1.2em; width: auto; vertical-align: -0.25em; }

.cw {
  display: block; width: 100%; text-align: left;
  background: var(--accent-soft); border-color: transparent;
  margin-bottom: .5rem;
}
.cw-label { font-weight: 600; }
.cw-toggle { color: var(--accent); }

.media { display: grid; gap: .4rem; margin-top: .6rem; grid-template-columns: 1fr; }
.media-2, .media-3, .media-4 { grid-template-columns: 1fr 1fr; }
.media-item { position: relative; border-radius: 8px; overflow: hidden; background: var(--bg); }
.media-item img, .media-item video { display: block; width: 100%; max-height: 480px; object-fit: contain; }
.media-item.sensitive img, .media-item.sensitive video { filter: blur(24px); }
.media-item .reveal { position: absolute; inset: 0; width: 100%; height: 100%; background: rgba(0,0,0,.35); color: #fff; border: 0; border-radius: 0; }

.poll { list-style: none; padding: 0; margin: .6rem 0 .2rem; }
.poll li { position: relative; padding: .3rem .5rem; margin-bottom: .3rem; border-radius: 6px; overflow: hidden; background: var(--bg); }
.poll-bar { position: absolute; inset: 0 auto 0 0; background: var(--accent-soft); }
.poll-label { position: relative; }

.card footer { display: flex; gap: 1rem; margin-top: .5rem; font-size: .85rem; color: var(--muted); align-items: center; }
.card footer .actions { margin-left: auto; display: flex; gap: .9rem; }
.card footer .actions a { text-decoration: none; }

/* Placeholders for posts we could not fetch, and the section that holds them */
.card.placeholder { border-style: dashed; background: transparent; }
.card.placeholder .name { color: var(--muted); }
.card.placeholder .content { font-size: .9rem; }
.avatar-missing { display: flex; align-items: center; justify-content: center; color: var(--muted); font-weight: 600; }
.unplaced { margin-top: 1.5rem; }
.unplaced h2 { font-size: .95rem; font-weight: 600; color: var(--muted); margin: 0 0 .6rem; }

/* Forks */
details.forks { margin: 0 0 .6rem .5rem; }
details.forks > summary {
  cursor: pointer; color: var(--accent); font-size: .9rem;
  padding: .3rem .6rem; border-radius: var(--radius);
  list-style: none; user-select: none;
}
details.forks > summary::-webkit-details-marker { display: none; }
details.forks > summary::before { content: "▸ "; }
details.forks[open] > summary::before { content: "▾ "; }
details.forks > summary:hover { background: var(--accent-soft); }
.fork-children { margin: .4rem 0 0 .6rem; padding-left: .6rem; border-left: 2px dashed var(--line); }

@media (max-width: 560px) {
  body { padding: 0 6px 3rem; }
  .card { padding: .6rem .7rem; }
  .fork-children { margin-left: .2rem; padding-left: .4rem; }
  details.forks { margin-left: .1rem; }
}