/* IRC dual-view shells — Quiet Grid chrome + script-skin log tokens (Sprint 1004 / 1056).
   Sprint 1009: Traditional hairline chrome / flat plugin titlebars; Tavern purple isolated.
   See rabbot/docs/irc-frontend-design.md */

.irc-shell {
  --irc-ts-normal: #00fc00;
  --irc-ts-num: #009300;
  --irc-bracket-left: #00fc00;
  --irc-bracket-after: #d2d2d2;
  --irc-nick: #00ffff;
  --irc-nick-bar: #ffff00;
  --irc-text: #d2d2d2;
  --irc-my-text: #009393;
  --irc-topic: #009393;
  --irc-join: #00fc00;
  --irc-part: #009300;
  --irc-quit: #ff0000;
  --irc-kick: #ff0000;
  --irc-action: #9c009c;
  --irc-notice: #9c009c;
  --irc-mode: #009300;
  --irc-whois-main: #d2d2d2;
  --irc-whois-bits: #009300;
  --irc-stuff-online: #009300;
  --irc-stuff-offline: #ff0000;
  --irc-nick-op: #00fc00;
  --irc-nick-voice: #009300;
  --irc-nick-reg: #d2d2d2;
  --irc-nick-1: #fc7f00;
  --irc-nick-2: #009393;
  --irc-nick-3: #0000fc;
  --irc-nick-4: #ff00ff;
  --irc-nick-5: #009300;
  --irc-nick-6: #ff0000;
  --irc-nick-7: #7f0000;
  --irc-nick-8: #9c009c;
  --irc-nick-9: #ffff00;
  --irc-nick-10: #00ffff;
  --irc-nick-11: #ffffff;
  --irc-nick-12: #7f7f7f;
  --irc-nick-13: #00007f;
  --irc-nick-14: #d2d2d2;
  font-family: var(--font-mono);
}

.irc-context-menu,
[data-irc-context-menu-target="menu"],
.irc-menubar-panel,
[data-irc-menubar-target="menu"] {
  position: fixed;
  z-index: 40;
}

.irc-pane-collapsed {
  display: none !important;
}

/* Sprint 1065: response panel follows Quiet Grid paper/ink/rule (dark via 1062 tokens) */
.irc-response-panel {
  border-top: 1px solid var(--color-rule, #e6e1d7);
  background: var(--color-paper-2, #f4f1ea);
  color: var(--color-ink, #111111);
  max-height: 8rem;
  overflow: auto;
  padding: 0.5rem;
  box-shadow: none;
}

.irc-panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
}

.irc-panel-line {
  padding: 0.125rem 0;
}

/* Traditional shell — fill remaining Chat viewport (parent uses svh/vw).
   Sprint 1004: Quiet Grid paper/ink chrome; script-skin keeps log nick/zebra tokens. */
.irc-shell--traditional {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  overflow: hidden;
}

.irc-shell--traditional > [data-controller~="irc-menubar"] {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  height: 100%;
  max-height: 100%;
  overflow: hidden;
}

/* Script skin preset (Sprint 833) — Wine-mIRC zebra log, orange nick/bar */
.irc-shell--traditional[data-theme-preset="script"] {
  --irc-nick: #fc7f00;
  --irc-nick-bar: #fc7f00;
}

/* Sprint 931 — compact traditional log (override script 1.25) */
.irc-shell--traditional[data-theme-preset="script"] .irc-log {
  line-height: 1;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-log > .irc-log-line {
  margin: 0;
  padding: 0;
  line-height: 1;
}

/* Sprint 1142: zebra is nth-child on direct .irc-log children so Turbo Stream
   / LogAppender appends keep even rows at #111 (no wrapper around .irc-log-line). */
.irc-shell--traditional[data-theme-preset="script"] .irc-log > .irc-log-line:nth-child(even) {
  background: #111;
}

.irc-traditional-chrome {
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
}

.irc-menubar {
  display: flex;
  gap: 0.25rem;
  padding: 0.125rem 0.25rem;
  background: var(--color-paper-2, #f4f1ea);
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
  /* Above .irc-plugin-windows-layer (30) so Tools stays clickable over iframes. */
  position: relative;
  z-index: 35;
}

.irc-menubar-item {
  font-size: 0.75rem;
  padding: 0.125rem 0.375rem;
  background: transparent;
  border: none;
  color: var(--color-ink, #111111);
  cursor: default;
}

.irc-menubar-item:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 1px;
}

.irc-toolbar {
  display: flex;
  gap: 0.25rem;
  padding: 0.125rem 0.375rem;
  background: var(--color-paper-2, #f4f1ea);
}

.irc-toolbar-btn {
  width: 1.75rem;
  height: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: 2px;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  cursor: pointer;
}

.irc-toolbar-btn:hover {
  background: var(--color-paper-2, #f4f1ea);
}

.irc-toolbar-btn:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 1px;
}

.irc-titlebar {
  padding: 0.25rem 0.375rem;
  font-size: 0.6875rem;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.irc-titlebar-row {
  background: var(--color-paper, #faf8f4);
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
}

.irc-titlebar-row .irc-notifications-account {
  display: flex;
  align-items: center;
  padding-right: 0.25rem;
}

.irc-titlebar-row .irc-notifications-cue {
  color: var(--color-ink, #111111);
  min-height: 1.75rem;
  min-width: 1.75rem;
  padding: 0.25rem;
}

.irc-titlebar-row .irc-notifications-cue:hover {
  background: var(--color-paper-2, #f4f1ea);
}

.irc-unread-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1rem;
  height: 1rem;
  padding: 0 0.25rem;
  border-radius: 9999px;
  background: #cc0000;
  color: #fff;
  font-size: 0.625rem;
  font-weight: 600;
  line-height: 1;
}

/* Sprint 1058: Quiet Grid unread cue (hairline chip — not rounded-full pill) */
.irc-unread-cue {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1rem;
  height: 1rem;
  padding: 0 0.3rem;
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: var(--radius-tile, 2px);
  background: transparent;
  color: var(--color-ink-mute, #5e5a52);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.625rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
}

.irc-unread-cue.hidden,
.irc-unread-cue[hidden] {
  display: none;
}

.irc-tree-buffer-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Sprint 1058: buffer switcher strip above channel log */
.irc-buffer-switcher {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.375rem;
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
  background: var(--color-paper, #faf8f4);
  overflow-x: auto;
  flex: 0 0 auto;
  min-height: 1.75rem;
}

.irc-buffer-chip-form {
  display: inline-flex;
  margin: 0;
  padding: 0;
}

.irc-buffer-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  max-width: 9rem;
  padding: 0.125rem 0.5rem;
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: var(--radius-tile, 2px);
  background: transparent;
  color: var(--color-ink-mute, #5e5a52);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 0.6875rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
}

.irc-buffer-chip:hover {
  background: var(--color-paper-2, #f4f1ea);
  color: var(--color-ink, #111111);
}

.irc-buffer-chip.is-active {
  border-color: var(--color-ink, #111111);
  color: var(--color-ink, #111111);
  background: var(--color-paper-2, #f4f1ea);
}

.irc-buffer-chip.is-unread {
  border-color: color-mix(in srgb, var(--color-accent, #d97706) 55%, var(--color-rule, #e6e1d7));
  color: var(--color-ink, #111111);
}

.irc-buffer-chip.is-unread .irc-unread-cue {
  border-color: color-mix(in srgb, var(--color-accent, #d97706) 40%, transparent);
  color: var(--color-accent-2, #b45309);
}

.irc-buffer-chip-label {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* App notifications (Quiet Grid accent) — distinct from PM unread red badge */
.irc-app-notif-badge {
  position: absolute;
  top: -0.125rem;
  right: -0.125rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1rem;
  height: 1rem;
  padding: 0 0.25rem;
  border-radius: 9999px;
  background: var(--color-accent, #d97706);
  color: #fffaf0;
  font-size: 0.625rem;
  font-weight: 600;
  line-height: 1;
}

/* Sprint 1009: chrome panels use hairline border-rule, not drop shadows */
.irc-notifications-panel {
  box-shadow: none;
  border: 1px solid var(--color-rule, #e6e1d7);
}

.irc-shell--traditional .irc-menubar-panel,
.irc-shell--traditional [data-irc-menubar-target="menu"] {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
}

/* Sprint 1059 / 1065: World Chat overlay chrome — Quiet Grid paper/ink/rule
   density matching Traditional (incl. forced dark via 1062 tokens).
   Scoped to #world_overlay_host so Tavern stays untouched.
   No Win95 gradients; no chrome drop-shadows. Preserves 1051 containment. */
#world_overlay_host .irc-traditional-chrome,
#world_overlay_host .irc-menubar,
#world_overlay_host .irc-toolbar,
#world_overlay_host .irc-titlebar-row,
#world_overlay_host .irc-titlebar {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  box-shadow: none;
  background-image: none;
}

#world_overlay_host .irc-menubar,
#world_overlay_host .irc-toolbar {
  background: var(--color-paper-2, #f4f1ea);
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
}

#world_overlay_host .irc-titlebar-row {
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
}

#world_overlay_host .irc-menubar-panel,
#world_overlay_host [data-irc-menubar-target="menu"],
#world_overlay_host .irc-context-menu-panel,
#world_overlay_host [data-irc-context-menu-target="menu"],
#world_overlay_host .irc-notifications-panel {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
}

#world_overlay_host .irc-response-panel {
  border-top: 1px solid var(--color-rule, #e6e1d7);
  background: var(--color-paper-2, #f4f1ea);
  color: var(--color-ink, #111111);
  box-shadow: none;
}

/* Sprint 1065: overlay status/tree/nicklist/switcher match Traditional density under dark */
#world_overlay_host .irc-status-strip,
#world_overlay_host .irc-tree,
#world_overlay_host .irc-nicklist,
#world_overlay_host .irc-buffer-switcher {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border-color: var(--color-rule, #e6e1d7);
  box-shadow: none;
  background-image: none;
}

#world_overlay_host .irc-plugin-window,
#world_overlay_host .irc-plugin-window-titlebar {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border-color: var(--color-rule, #e6e1d7);
  box-shadow: none;
  background-image: none;
}

.irc-tree-query-item {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.irc-tree-query-form {
  flex: 1;
  min-width: 0;
}

.irc-status-metrics {
  display: inline-flex;
  gap: 0.75rem;
  font-size: 0.6875rem;
}

.irc-traditional-grid {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr) 7rem;
  grid-template-rows: minmax(0, 1fr) 5rem;
  gap: 1px;
  background: var(--color-rule, #e6e1d7);
  flex: 1 1 auto;
  min-height: 0;
}

.irc-stuff-pane,
.irc-log-pane {
  background: var(--color-paper-2, #f4f1ea);
  color: var(--color-ink, #111111);
  min-height: 0;
  overflow: auto;
  font-size: 0.75rem;
}

/* Sprint 1056: Traditional tree/nicklist — flat paper/ink, border-rule hairlines, no chrome shadows */
.irc-tree,
.irc-nicklist {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
  min-height: 0;
  overflow: auto;
  font-size: 0.75rem;
}

.irc-log-pane {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Sprint 1132: find-in-buffer strip — Quiet Grid tokens, no second viewport-scroll */
.irc-find-strip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: 0.25rem 0.5rem;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
}

.irc-find-strip.hidden {
  display: none;
}

.irc-find-query {
  flex: 1;
  min-width: 0;
  height: 2rem;
  padding: 0 0.5rem;
  font-size: 0.8125rem;
  font-family: var(--font-body, inherit);
  color: var(--color-ink, #111111);
  background: var(--color-paper, #faf8f4);
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: var(--radius-tile, 2px);
}

.irc-find-query:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 1px;
}

.irc-find-count {
  flex-shrink: 0;
  font-size: 0.6875rem;
  color: var(--color-ink-mute, #5e5a52);
}

.irc-find-close {
  flex-shrink: 0;
  min-height: 2rem;
  padding: 0 0.5rem;
}

.irc-find-hit {
  outline: 1px solid var(--color-accent, #d97706);
  background: color-mix(in srgb, var(--color-accent, #d97706) 18%, transparent);
}

.irc-log {
  background: #000;
  color: #c0c0c0;
  padding: 0.125rem 0.375rem;
  font-size: 0.8125rem;
  line-height: 1;
  flex: 1;
  overflow: auto;
}

/* Sprint 931: flush lines; kill user-agent <p> margin */
.irc-log > .irc-log-line {
  display: block;
  margin: 0;
  margin-block: 0;
  padding: 0;
  line-height: 1;
  white-space: pre-wrap;
  word-break: break-word;
}

.irc-log-line .irc-indent {
  white-space: pre;
}

/* Sprint 951: own-nick mention — class hook plus Quiet Grid mark (not purple) */
mark.irc-nick-mention {
  color: var(--color-ink, #111111);
  background-color: var(--color-accent, #d97706);
  padding: 0 0.125em;
  font-style: normal;
}

/* Sprint 953: mIRC reverse and underline in log text */
.irc-reverse {
  color: var(--color-paper, #faf8f5);
  background-color: var(--color-ink, #111111);
}

.irc-underline {
  text-decoration: underline;
}

/* Sprint 1052: mIRC italic (\x1d) in log text */
.irc-italic {
  font-style: italic;
}

/* Sprint 1141: mIRC strikethrough (\x1e) in log text */
.irc-strike {
  text-decoration: line-through;
}

.irc-tree {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding: 0.25rem;
}

.irc-tree summary {
  cursor: pointer;
  font-weight: 600;
}

.irc-tree ul {
  list-style: none;
  margin: 0;
  padding-left: 0.75rem;
}

.irc-tree-item {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 0.0625rem 0;
  font: inherit;
  cursor: pointer;
}

.irc-tree-item.is-active {
  background: var(--color-accent, #d97706);
  color: #fffaf0;
}

.irc-tree-muted {
  color: var(--color-ink-mute, #5e5a52);
}

.irc-tree-group {
  margin-left: 0.5rem;
}

.irc-tree-group summary {
  font-weight: 500;
}

.irc-tree-group-empty {
  margin: 0;
  padding-left: 0.75rem;
  font-size: 0.8125rem;
}

.irc-nicklist {
  grid-column: 3;
  grid-row: 1;
  padding: 0.25rem;
}

.irc-nicklist ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.irc-nick {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.irc-stuff-pane {
  grid-column: 2 / span 2;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-rule, #e6e1d7);
}

.irc-stuff-title {
  font-size: 0.6875rem;
  padding: 0.125rem 0.375rem;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink-mute, #5e5a52);
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
}

.irc-stuff-log {
  flex: 1;
  background: #000;
  color: #00fc00;
  font-size: 0.75rem;
  padding: 0.25rem;
  overflow: auto;
}

.irc-stuff-line {
  margin: 0;
}

.irc-stuff-muted {
  color: #7f7f7f;
}

.irc-traditional-footer {
  border-top: 1px solid var(--color-rule, #e6e1d7);
  background: var(--color-paper-2, #f4f1ea);
  padding: 0.25rem 0.375rem;
}

/* Script preset — denser chrome (Sprint 834); Sprint 1004 drops Win95 inset chrome shadows */
.irc-shell--traditional[data-theme-preset="script"] .irc-traditional-grid {
  gap: 0;
  border: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree,
.irc-shell--traditional[data-theme-preset="script"] .irc-nicklist,
.irc-shell--traditional[data-theme-preset="script"] .irc-log-pane,
.irc-shell--traditional[data-theme-preset="script"] .irc-stuff-pane {
  border: 1px solid var(--color-rule, #e6e1d7);
}

/* Sprint 1056: script preset keeps flat paper chrome on tree/nicklist (no Win95 fills) */
.irc-shell--traditional[data-theme-preset="script"] .irc-tree,
.irc-shell--traditional[data-theme-preset="script"] .irc-nicklist {
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  box-shadow: none;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree {
  padding: 0.125rem 0.1875rem;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree summary {
  line-height: 1.1;
  padding: 0.03125rem 0;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree-network-root {
  font-weight: 700;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree ul {
  padding-left: 0.5rem;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-tree-item {
  padding: 0;
  line-height: 1.15;
}

.irc-shell--traditional[data-theme-preset="script"] .irc-titlebar {
  font-size: 0.625rem;
  letter-spacing: -0.01em;
}

.irc-input-row {
  display: flex;
  gap: 0.25rem;
}

.irc-traditional-footer,
.irc-tavern-footer {
  position: relative;
}

.irc-colour-popover {
  position: absolute;
  right: 0.5rem;
  bottom: 100%;
  z-index: 40;
  display: grid;
  grid-template-columns: repeat(8, 20px);
  gap: 4px;
  padding: 8px;
  margin-bottom: 4px;
  background: var(--color-paper, #faf8f4);
  border: 1px solid var(--color-accent, #d97706);
  border-radius: 6px;
}

.irc-colour-popover[hidden] {
  display: none;
}

.irc-colour-swatch {
  width: 20px;
  height: 20px;
  padding: 0;
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: 2px;
  cursor: pointer;
}

.irc-colour-swatch:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 1px;
}

.irc-input {
  flex: 1;
  font: inherit;
  font-size: 0.8125rem;
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: 2px;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  padding: 0.125rem 0.25rem;
  min-height: 1.5rem;
}

.irc-input:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 1px;
}

.irc-send-btn {
  font-size: 0.75rem;
  border: 1px solid var(--color-accent, #d97706);
  border-radius: 2px;
  background: var(--color-accent, #d97706);
  color: #fffaf0;
  padding: 0 0.5rem;
  cursor: pointer;
}

.irc-send-btn:focus-visible {
  outline: 2px solid var(--color-accent, #d97706);
  outline-offset: 2px;
}

/* Sprint 1056: status strip — Quiet Grid paper/ink + border-rule; no chrome drop-shadow */
.irc-status-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.6875rem;
  margin-top: 0.125rem;
  padding: 0.25rem 0.375rem;
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border: 1px solid var(--color-rule, #e6e1d7);
  box-shadow: none;
}

.irc-status-strip .irc-status-metrics {
  color: var(--color-ink-mute, #5e5a52);
}

/* Modal dialogs must sit above traditional chrome + plugin windows. */
.irc-modal-backdrop {
  z-index: 50;
}

.irc-modal-panel {
  display: flex;
  flex-direction: column;
  max-height: min(85svh, 40rem);
  overflow: hidden;
  background-color: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: var(--radius-card, 6px);
  box-shadow: 0 1px 2px rgb(0 0 0 / 0.08);
}

.irc-modal-panel > header,
.irc-modal-panel > nav,
.irc-modal-panel > footer {
  flex-shrink: 0;
}

.irc-modal-panel > .viewport-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}

.irc-plugin-windows-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 30;
}

/* Sprint 1050: Quiet Grid plugin window chrome — flat paper/ink, border-rule, no chrome shadows */
.irc-plugin-window {
  position: fixed;
  left: 2rem;
  top: 4rem;
  display: flex;
  flex-direction: column;
  min-width: 280px;
  min-height: 180px;
  max-width: min(90vw, calc(100vw - 1rem));
  max-height: min(70vh, calc(100svh - 2rem));
  border: 1px solid var(--color-rule, #e6e1d7);
  border-radius: var(--radius-card, 6px);
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  box-shadow: none;
  overflow: hidden;
  pointer-events: auto;
  /* Sprint 1051: keep trackpad/wheel gestures from chaining to overlay/world scroll. */
  overscroll-behavior: contain;
}

/* Keep flex column shell when also tagged .viewport-shell (page utility is CSS grid). */
.irc-plugin-window.viewport-shell {
  display: flex;
  flex-direction: column;
  grid-template-rows: unset;
  width: auto;
  height: auto;
  max-width: min(90vw, calc(100vw - 1rem));
  max-height: min(70vh, calc(100svh - 2rem));
}

.irc-plugin-window:focus-within {
  outline: 2px solid var(--color-accent, #e8a838);
  outline-offset: 2px;
}

/* Sprint 1009/1050: flat paper/ink titlebar — no Win95 #dfdfdf gradient */
.irc-plugin-window-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-shrink: 0;
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--color-rule, #e6e1d7);
  background: var(--color-paper, #faf8f4);
  color: var(--color-ink, #111111);
  box-shadow: none;
  cursor: move;
  user-select: none;
  font-size: 0.8125rem;
  font-family: var(--font-body, sans-serif);
}

.irc-plugin-window-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.irc-plugin-window-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-ink, #111111);
  width: 2rem;
  height: 2rem;
  padding: 0;
  box-shadow: none;
  cursor: pointer;
}

.irc-plugin-window-close:hover {
  background: var(--color-paper-2, #f4f1ea);
  border-color: var(--color-rule, #e6e1d7);
}

.irc-plugin-window-close:focus-visible {
  outline: 2px solid var(--color-accent, #e8a838);
  outline-offset: 2px;
}

.irc-plugin-window-close svg {
  display: block;
  width: 16px;
  height: 16px;
}

.irc-weather-panel,
.irc-oper-panel {
  font-family: var(--font-mono, monospace);
  font-size: 0.8125rem;
}

.irc-panel-meta {
  margin-top: 0.5rem;
}

.irc-shell--tavern .irc-tools-traditional-hint {
  font-size: 0.75rem;
  color: var(--irc-tavern-meta, #8888aa);
  padding: 0.25rem 0.5rem;
  border-top: 1px solid var(--color-rule, #444);
}

.irc-plugin-window-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 0.5rem;
}

.irc-plugin-window-iframe {
  width: 100%;
  height: 100%;
  min-height: 140px;
  border: 0;
}

/* Sprint 1057: ≤640px collapses tree/nicklist/@stuff by default (reflow ≠ collapse).
   Log + composer claim the single grid cell inside the outer 100svh viewport-shell.
   Toolbar toggles add .irc-pane-expanded to reveal panes as overlays (see irc-pane-toggle).
   ≥641px keeps desktop multi-pane (.irc-traditional-grid 9rem / 1fr / 7rem). */
@media (max-width: 640px) {
  .irc-plugin-window,
  .irc-plugin-window.viewport-shell {
    left: 0.5rem;
    top: 3rem;
    min-width: 0;
    width: calc(100vw - 1rem);
    max-width: calc(100vw - 1rem);
    max-height: calc(100svh - 4rem);
  }

  .irc-traditional-grid {
    position: relative;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
  }

  .irc-log-pane {
    grid-column: 1;
    grid-row: 1;
    min-height: 0;
  }

  /* Default collapsed: hide side panes so they do not steal 100svh budget */
  .irc-tree:not(.irc-pane-expanded),
  .irc-nicklist:not(.irc-pane-expanded),
  .irc-stuff-pane:not(.irc-pane-expanded) {
    display: none !important;
  }

  /* Explicit toggle reveal — overlay so log scroll region stays primary */
  .irc-tree.irc-pane-expanded,
  .irc-nicklist.irc-pane-expanded,
  .irc-stuff-pane.irc-pane-expanded {
    display: flex !important;
    flex-direction: column;
    position: absolute;
    z-index: 20;
    background: var(--color-paper, #faf8f4);
    color: var(--color-ink, #111111);
    border: 1px solid var(--color-rule, #e6e1d7);
    box-shadow: none;
    overflow: auto;
  }

  .irc-tree.irc-pane-expanded {
    inset: 0 auto 0 0;
    width: min(16rem, 85vw);
    grid-column: unset;
    grid-row: unset;
  }

  .irc-nicklist.irc-pane-expanded {
    inset: 0 0 0 auto;
    width: min(12rem, 70vw);
    grid-column: unset;
    grid-row: unset;
  }

  .irc-stuff-pane.irc-pane-expanded {
    inset: auto 0 0 0;
    width: 100%;
    max-height: 40%;
    grid-column: unset;
    grid-row: unset;
  }
}

/* Tavern SillyTavern-style shell — Sprint 1009: purple (#252545 / #1a1a2e) stays tavern-only */
.irc-shell--tavern {
  background: var(--irc-tavern-bg, #1a1a2e);
  color: #ede9df;
  --irc-tavern-bg: #1a1a2e;
  --irc-tavern-bubble: #2d2d44;
  --irc-tavern-bubble-mine: #3d3d5c;
  --irc-tavern-accent: #c9a227;
  --irc-tavern-meta: #8888aa;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  overflow: hidden;
}

.irc-tavern-layout {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  min-height: 0;
}

.irc-tavern-rail {
  border-right: 1px solid #333355;
  padding: 0.5rem 0.25rem;
  overflow-y: auto;
}

.irc-tavern-characters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.irc-tavern-char {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.625rem;
  color: var(--irc-tavern-meta);
}

.irc-tavern-avatar,
.irc-tavern-mes-avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 9999px;
  background: var(--irc-tavern-accent);
  color: #1a1a2e;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.irc-shell--tavern .irc-tavern-main {
  background: radial-gradient(ellipse at center, #252545 0%, #1a1a2e 70%);
}

.irc-tavern-log {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow-y: auto;
}

.irc-tavern-mes {
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
}

.irc-tavern-mes-block {
  flex: 1;
  min-width: 0;
}

.irc-tavern-mes-name {
  font-size: 0.75rem;
  color: var(--irc-tavern-accent);
  margin-bottom: 0.125rem;
}

.irc-tavern-mes-text {
  background: var(--irc-tavern-bubble);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.45;
  word-break: break-word;
}

.irc-tavern-mes--mine .irc-tavern-mes-text {
  background: var(--irc-tavern-bubble-mine);
}

.irc-tavern-mes--mine {
  flex-direction: row-reverse;
}

.irc-tavern-mes--mine .irc-tavern-mes-block {
  align-items: flex-end;
}

.irc-tavern-char.is-speaking .irc-tavern-avatar {
  box-shadow: 0 0 0 2px var(--irc-tavern-accent);
}

.irc-tavern-meta {
  text-align: center;
  font-size: 0.75rem;
  color: var(--irc-tavern-meta);
  margin: 0;
}

.irc-tavern-footer {
  border-top: 1px solid #333355;
  padding: 0.5rem 0.75rem;
}

.irc-tavern-composer {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

.irc-shell--tavern .irc-tavern-textarea {
  flex: 1;
  resize: none;
  min-height: 2.5rem;
  max-height: 8rem;
  background: #252545;
  border: 1px solid #444466;
  border-radius: 0.375rem;
  color: #ede9df;
  padding: 0.5rem 0.625rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
}

.irc-tavern-send {
  background: var(--irc-tavern-accent);
  color: #1a1a2e;
  border: none;
  border-radius: 0.375rem;
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.irc-tavern-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.6875rem;
  color: var(--irc-tavern-meta);
  margin-top: 0.375rem;
}

@media (max-width: 640px) {
  .irc-tavern-layout {
    grid-template-columns: 3rem minmax(0, 1fr);
  }

  .irc-tavern-char-name {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .irc-tavern-mes-text {
    transition: none;
  }
}