/* CHANNELS — team-channels dashboard for NRSG8 plugins.
 *
 * Theme switches by body[data-plugin] so the same surface can serve
 * ssmailab (SSM-purple), nrsg8 (slate-blue), etc. Default = ssmailab.
 *
 * 3-pane Slack-ish layout: collapsible left sidebar (channel tree),
 * center message stream + composer, optional right (topic/members/files
 * panel — collapsed into header in MVP).
 *
 * NO innerHTML in channels.js — DOM mutated via createElement only
 * (CLAUDE.md hard rule).
 */

/* SSM-purple defaults (plugin=ssmailab). */
:root {
  --bg-page:    #f5f3f7;
  --bg-rail:    #f4ebf5;
  --bg-card:    #ffffff;
  --bg-soft:    #f9eef8;
  --bg-faint:   #fbf7fc;

  --line-soft:  #ede0ed;
  --line-mid:   #d6c4d6;
  --line-strong:#a379a9;

  --ink-0:      #2c2c2c;
  --ink-1:      #5d5d5d;
  --ink-2:      #696169;
  --ink-3:      #666166;
  /* --ink-4 removed: defined but never rendered (no `color:` usage in
   * channels.css/.html/.js). It was the audit's worst "FAIL" (1.51:1) but a
   * name-based false pairing — the token is never painted on any background. */

  --purple:     #9b2c98;
  --purple-d:   #5d265f;
  --purple-m:   #af56ad;
  --purple-soft:#cca5cb;
  --purple-tint:#f2e4f2;
  --pink:       #e54483;

  --font-display: 'Chakra Petch', 'IBM Plex Mono', monospace;
  --font-sans:    'Familjen Grotesk', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;
}

/* slate-blue alt theme for plugin=nrsg8 (whenever it's seeded). */
body[data-plugin="nrsg8"] {
  --purple:     #3a5577;
  --purple-d:   #243349;
  --purple-m:   #5d7395;
  --purple-soft:#8b9bb6;
  --purple-tint:#d6dfee;
  --pink:       #d4a017;
  --bg-page:    #f4f4f0;
  --bg-rail:    #eef0f5;
  --bg-soft:    #e8edf3;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; overflow: hidden; }

body {
  background: var(--bg-page);
  color: var(--ink-1);
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.5;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

/* ── topbar ──────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--line-mid);
  flex-wrap: wrap;
}
.sidebar-toggle {
  background: transparent;
  border: 1px solid var(--line-mid);
  color: var(--purple);
  font-size: 18px;
  width: 32px;
  height: 32px;
  border-radius: 3px;
  cursor: pointer;
  display: none;
}
@media (max-width: 880px) {
  .sidebar-toggle { display: inline-flex; align-items: center; justify-content: center; }
}
.brand-mark {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.16em;
  color: var(--purple-d);
}
.brand-sep { color: var(--ink-3); opacity: 0.6; }
.plugin-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple);
  background: var(--purple-tint);
  padding: 2px 8px;
  border-radius: 2px;
}
.bread {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink-0);
  letter-spacing: 0.02em;
}
.topic {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-3);
  font-style: italic;
  flex: 1;
  min-width: 100px;
}
.spacer { flex: 1; }
.user-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-2);
}

/* ── layout ──────────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 290px 1fr;
  overflow: hidden;
}
@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .sidebar[data-open="1"] {
    display: block;
    position: absolute;
    top: 50px;
    left: 0;
    width: 290px;
    height: calc(100% - 50px - 36px);
    z-index: 10;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
  }
}

/* ── sidebar (channel tree) ──────────────────────────────────── */
.sidebar {
  background: var(--bg-rail);
  border-right: 1px solid var(--line-mid);
  overflow-y: auto;
  padding: 12px 8px;
}
.sidebar-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px 8px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 6px;
}
.sidebar-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.refresh-btn {
  background: transparent;
  border: 1px solid var(--line-mid);
  color: var(--purple);
  font-size: 13px;
  width: 26px;
  height: 26px;
  border-radius: 2px;
  cursor: pointer;
}
.refresh-btn:hover { background: var(--purple-tint); }

.channel-tree { display: flex; flex-direction: column; gap: 1px; }

.channel-group {
  margin-top: 6px;
}
.channel-group-head {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  cursor: pointer;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--purple-d);
  font-weight: 500;
}
.channel-group-head:hover { background: var(--purple-tint); }
.channel-group-head .arrow {
  display: inline-block;
  width: 14px;
  font-size: 10px;
  color: var(--ink-3);
  transition: transform 160ms;
}
.channel-group[data-collapsed="1"] .arrow { transform: rotate(-90deg); }
.channel-group[data-collapsed="1"] .group-kids { display: none; }

.group-kids { padding-left: 8px; display: flex; flex-direction: column; gap: 1px; }

.channel-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 12px;
  cursor: pointer;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-1);
  border-left: 3px solid transparent;
}
.channel-row:hover { background: var(--bg-soft); color: var(--purple-d); }
.channel-row[data-active="1"] {
  background: var(--purple-tint);
  color: var(--purple-d);
  border-left-color: var(--purple);
  font-weight: 500;
}
.channel-row .msg-count {
  margin-left: auto;
  font-size: 10.5px;
  color: var(--ink-3);
}

/* ── main pane ───────────────────────────────────────────────── */
.main {
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  background: var(--bg-card);
}

.msg-stream {
  overflow-y: auto;
  padding: 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 10px 14px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto auto;
  gap: 4px;
  border-left: 3px solid var(--purple-soft);
}
.msg-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  grid-column: 1 / -1;
}
.msg-author {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--purple-d);
}
.msg-ts {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}
.msg-body {
  grid-column: 1 / -1;
  font-size: 14px;
  color: var(--ink-0);
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg-attachments {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.attachment-pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--purple);
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  padding: 2px 8px;
  border-radius: 2px;
  text-decoration: none;
}
.attachment-pill:hover {
  background: var(--purple-tint);
  border-color: var(--purple-soft);
}

/* ── reply threading ─────────────────────────────────────────── */
/* Per-depth left-margin so replies cascade right without crushing
 * narrow viewports. Depth 0 = top-level (no indent). */
.msg[data-depth="1"] { margin-left:  22px; }
.msg[data-depth="2"] { margin-left:  44px; }
.msg[data-depth="3"] { margin-left:  66px; }
.msg[data-depth="4"] { margin-left:  88px; }
.msg[data-depth="5"] { margin-left: 110px; }
.msg[data-is-reply="1"] {
  border-left-color: var(--purple);
  background: var(--bg-soft);
  position: relative;
}
.msg[data-is-reply="1"]::before {
  content: '↳';
  position: absolute;
  left: -16px;
  top: 8px;
  color: var(--purple-soft);
  font-family: var(--font-mono);
  font-size: 14px;
}
.msg-reply-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: 2px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 150ms;
}
.msg:hover .msg-reply-btn { opacity: 1; }
.msg-reply-btn:hover {
  color: var(--purple);
  border-color: var(--purple-soft);
}
.reply-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  margin-bottom: 6px;
  background: var(--purple-tint);
  border-left: 3px solid var(--purple);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--purple-d);
}
.reply-preview {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reply-cancel {
  background: transparent;
  border: 1px solid var(--purple-soft);
  color: var(--purple);
  border-radius: 2px;
  padding: 0 6px;
  cursor: pointer;
  font-size: 12px;
  line-height: 1.2;
}
.reply-cancel:hover { background: var(--purple); color: var(--bg-card); }

/* ── upload picker ───────────────────────────────────────────── */
.composer-upload {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
}
.upload-pick {
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  padding: 3px 10px;
  color: var(--purple-d);
  cursor: pointer;
  letter-spacing: 0.04em;
}
.upload-pick:hover {
  background: var(--purple-tint);
  border-color: var(--purple-soft);
}
.upload-status {
  color: var(--ink-3);
  font-size: 11px;
}

/* ── composer ────────────────────────────────────────────────── */
.composer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 22px;
  background: var(--bg-faint);
  border-top: 1px solid var(--line-mid);
}
#composer-text {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 14.5px;
  color: var(--ink-0);
  background: var(--bg-card);
  border: 1px solid var(--line-mid);
  border-radius: 3px;
  padding: 10px 12px;
  resize: vertical;
  min-height: 60px;
  outline: none;
}
#composer-text:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(155,44,152,0.08);
}
.composer-meta {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 8px;
}
.composer-meta input {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-0);
  background: var(--bg-card);
  border: 1px solid var(--line-mid);
  border-radius: 3px;
  padding: 6px 10px;
  outline: none;
}
.composer-meta input:focus { border-color: var(--purple); }

.composer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.char-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-3);
}
.primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--purple);
  color: white;
  font-family: var(--font-sans);
  font-size: 14px;
  border: 1px solid var(--purple);
  padding: 8px 18px;
  border-radius: 2px;
  cursor: pointer;
}
.primary-btn:hover { background: var(--purple-d); border-color: var(--purple-d); }
.primary-btn:disabled { background: var(--ink-3); border-color: var(--ink-3); cursor: not-allowed; }
.key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: rgba(255,255,255,0.18);
  padding: 1px 6px;
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.3);
}

/* ── footer ──────────────────────────────────────────────────── */
.foot {
  padding: 8px 18px;
  background: var(--bg-card);
  border-top: 1px solid var(--line-mid);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-align: center;
}
.foot-link { color: var(--purple); text-decoration: none; }
.foot-link:hover { color: var(--purple-d); text-decoration: underline; }

.empty {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-3);
  font-style: italic;
  text-align: center;
  padding: 18px 8px;
}