#brainstormDialog { position: fixed; inset: 0; width: 100%; max-width: none; height: 100dvh; max-height: none; margin: 0; padding: 0; border: 0; border-radius: 0; background: var(--bg); color: var(--ink); overflow: auto; }
#brainstormDialog[open] { display: flex; flex-direction: column; }
/* 내비게이션은 site-chrome.css, 푸터는 site-footer.css, 보드 버튼은 메인의 공통 스타일을 사용합니다. */
.desk.brainstorm-page {
  --site-shell-width: none;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}
.brain-page-label {
  padding-left: 24px;
  border-left: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  opacity: .65;
}
.brain-modal-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 28px; }
.brain-intro { width: min(780px, 100%); margin: 64px auto 36px; padding: 0 24px; }
.brain-eyebrow { font-size: 12px; color: var(--muted); letter-spacing: .12em; }
.brain-intro h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 600; letter-spacing: -.035em; line-height: 1.4; margin: 16px 0; }
.brain-intro > p:last-of-type { font-size: 14px; color: var(--muted); line-height: 1.8; }
.brain-new { display: flex; gap: 10px; margin-top: 32px; }
#brainstormDialog input, #brainstormDialog textarea, #brainstormDialog select { background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 12px; padding: 13px 14px; }
.brain-new input { min-width: 0; flex: 1; }
.brain-primary { white-space: nowrap; }
.brain-library { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; width: min(1040px, 100%); margin: 0 auto; padding: 0 24px 48px; }
.brain-library-empty { grid-column: 1 / -1; text-align: center; margin: 48px 0; color: var(--muted); font-size: 14px; }
.brain-board-preview { position: relative; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); overflow: hidden; }
.brain-board-open { display: block; text-align: left; width: 100%; padding: 24px 24px 52px; }
.brain-preview-mark { display: block; font-size: 32px; color: var(--muted); margin-bottom: 24px; }
.brain-board-open h2 { font-size: 18px; font-weight: 500; overflow-wrap: anywhere; }
.brain-board-open > span:last-child { color: var(--muted); font-size: 12px; }
.brain-board-delete { position: absolute; right: 16px; bottom: 12px; padding: 8px; color: var(--muted); font-size: 12px; }
.brain-tools { display: flex; gap: 12px; align-items: center; padding: 20px 28px 8px; flex-shrink: 0; }
.brain-board-heading { display: flex; align-items: center; flex: 1; gap: 16px; min-width: 0; }
.brain-all-boards { flex-shrink: 0; white-space: nowrap; }
#brainstormDialog .brain-title { flex: 1; min-width: 100px; font-size: 20px; font-weight: 500; border: 0; background: transparent; padding-left: 0; }
.brain-tools > button { white-space: nowrap; font-size: 13px; }
.brain-help { margin: 4px 28px 18px; color: var(--muted); font-size: 12px; line-height: 1.8; }
/* 보드의 정렬선을 내비게이션과 맞추고 안내는 필요할 때 펼칩니다. */
.brainstorm-page .brain-tools {
  position: relative;
  gap: 8px;
  padding: 12px var(--site-gutter);
}
.brainstorm-page .brain-board-heading { gap: 10px; }
.brainstorm-page #brainstormDialog .brain-title {
  flex: 0 1 360px;
  min-width: 0;
  min-height: 40px;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -.025em;
  text-overflow: ellipsis;
}
.brainstorm-page #brainstormDialog .brain-title:hover {
  background: color-mix(in srgb, var(--ink) 4%, transparent);
}
.brainstorm-page #brainstormDialog .brain-title:focus {
  background: color-mix(in srgb, var(--ink) 6%, transparent);
  outline: 2px solid var(--site-accent);
  outline-offset: 1px;
}
.brainstorm-page .brain-tools button {
  min-height: 40px;
  padding: 9px 14px;
  border-radius: 9px;
  font-size: 12px;
}
.brainstorm-page .brain-tools .brain-all-boards {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: -6px;
  padding-inline: 6px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-weight: 400;
}
.brainstorm-page .brain-all-boards svg { flex-shrink: 0; }
.brainstorm-page .brain-tools .brain-all-boards:hover {
  background: color-mix(in srgb, var(--ink) 5%, transparent);
  color: var(--ink);
}
.brainstorm-page .brain-all-boards:focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 2px;
}
.brain-heading-separator {
  flex-shrink: 0;
  color: color-mix(in srgb, var(--ink) 24%, transparent);
  font-size: 14px;
  font-weight: 400;
  user-select: none;
}
.brain-help-disclosure { flex-shrink: 0; }
.brain-help-disclosure summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 9px 10px;
  border-radius: 9px;
  color: var(--muted);
  font-size: 12px;
  list-style: none;
  cursor: pointer;
}
.brain-help-disclosure summary::-webkit-details-marker { display: none; }
.brain-help-disclosure summary::after {
  content: "";
  width: 5px;
  height: 5px;
  margin-top: -3px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
}
.brain-help-disclosure[open] summary::after { margin-top: 3px; transform: rotate(225deg); }
.brain-help-disclosure summary:hover,
.brain-help-disclosure[open] summary { background: color-mix(in srgb, var(--ink) 5%, transparent); }
.brain-help-disclosure summary:focus-visible { outline: 2px solid var(--site-accent); outline-offset: 3px; }
.brain-help-disclosure .brain-help {
  position: absolute;
  z-index: 20;
  top: calc(100% - 4px);
  right: var(--site-gutter);
  width: min(440px, calc(100% - var(--site-gutter) * 2));
  margin: 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  box-shadow: 0 8px 24px #0002;
}
.brainstorm-page .brain-tools.is-placing { flex-wrap: wrap; }
.brain-tools.is-placing .brain-help-disclosure { order: 1; flex-basis: 100%; margin: 0; }
.brain-tools.is-placing .brain-help-disclosure summary { display: none; }
.brain-tools.is-placing .brain-help {
  position: static;
  width: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.brainstorm-page .brain-bottom { padding-inline: var(--site-gutter); }
.brain-scroll { flex: 1; min-height: 260px; overflow: auto; border-block: 1px solid var(--line); overscroll-behavior: contain; }
.brain-canvas-stage { position: relative; overflow: hidden; }
.brain-canvas { position: relative; width: 2060px; height: 1450px; transform-origin: 0 0; background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 22px 22px; }
.brain-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.brain-lines path { fill: none; stroke: var(--muted); stroke-opacity: .35; stroke-width: 1.5; }
.brain-root { position: absolute; display: grid; place-items: center; width: 290px; min-height: 80px; padding: 24px; background: var(--ink); color: var(--bg); border-radius: 40px; text-align: center; overflow-wrap: anywhere; }
.brain-card { position: absolute; width: 230px; background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 4px 12px #00000008; overflow: hidden; }
.brain-card.sage { background: color-mix(in srgb, #9abf9a 23%, var(--paper)); }
.brain-card.sand { background: color-mix(in srgb, #e4c67c 25%, var(--paper)); }
.brain-card.rose { background: color-mix(in srgb, #d7a4ad 23%, var(--paper)); }
.brain-card.selected {
  border-color: #659bff;
  outline: 2px solid #659bff;
  outline-offset: 2px;
  box-shadow: 0 0 0 6px #659bff26, 0 8px 24px #0002;
}
.brain-card.selected::after {
  content: "✓";
  position: absolute;
  top: 8px;
  right: 10px;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #659bff;
  color: #102344;
  font-size: 13px;
  font-weight: 700;
  pointer-events: none;
}
.brain-card.selected .brain-handle { padding-right: 40px; }
.brain-handle { display: block; width: 100%; padding: 10px 14px; text-align: left; font-size: 11px; color: var(--muted); cursor: grab; touch-action: none; }
.brain-handle:active { cursor: grabbing; }
.brain-card-text { display: block; width: 100%; padding: 0 14px 12px; text-align: left; font-size: 14px; line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere; max-height: 180px; overflow-y: auto; }
.brain-card-actions { display: flex; justify-content: space-between; padding: 6px 10px; border-top: 1px solid var(--line); }
.brain-card-actions button { font-size: 12px; padding: 5px; }
.brain-empty-canvas { position: absolute; width: 290px; margin: 0; color: var(--muted); font-size: 14px; line-height: 2; text-align: center; white-space: pre-line; }
.brain-bottom { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 12px 28px; min-height: 64px; font-size: 12px; flex-shrink: 0; }
.brain-bottom > span { margin-right: auto; color: var(--muted); }
.brain-zoom { display: flex; align-items: center; gap: 2px; margin-left: auto; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.brain-zoom button { min-width: 34px; min-height: 34px; padding: 7px 9px; border-radius: 7px; font-size: 12px; white-space: nowrap; }
.brain-zoom button:hover:not(:disabled) { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.brain-zoom .brain-zoom-reset { min-width: 58px; font-variant-numeric: tabular-nums; }
.brain-zoom .brain-zoom-fit { margin-left: 3px; border-left: 1px solid var(--line); border-radius: 0 7px 7px 0; }
#brainstormDialog .brain-bottom select { padding: 8px; }
#brainstormDialog .brain-editor { width: min(460px, calc(100% - 32px)); padding: 28px; background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 20px; }
.brain-editor h2 { font-size: 20px; font-weight: 500; }
#brainstormDialog .brain-editor textarea { width: 100%; resize: vertical; margin: 16px 0; }
.brain-editor-actions { display: flex; justify-content: flex-end; gap: 16px; }
@media (max-width: 760px) {
  .brainstorm-page .brain-tools { flex-wrap: wrap; }
  .brainstorm-page .brain-board-heading { flex-basis: 100%; }
  .brain-help-disclosure { margin-left: auto; }
}
@media (max-width: 600px) {
  .brain-page-label { display: none; }
  .brain-intro { margin-top: 32px; }.brain-new { flex-direction: column; }
  .brain-board-heading { flex-basis: 100%; gap: 12px; }
  .brain-tools { padding: 12px 16px; flex-wrap: wrap; }.brain-title { flex-basis: 100% !important; }
  .brainstorm-page .brain-tools { padding-block: 10px; }
  .brain-help { margin: 0 16px 12px; }.brain-bottom { padding: 10px 16px; gap: 10px; }
}

body:has(#brainstormDialog[open]) { overflow: hidden; }
#brainstormDialog.can-pan .brain-scroll,
#brainstormDialog.can-pan .brain-scroll * { cursor: grab; user-select: none; }
#brainstormDialog .brain-scroll.is-panning,
#brainstormDialog .brain-scroll.is-panning * { cursor: grabbing; }
.brain-options { margin: 0 0 20px; padding: 0; border: 0; min-width: 0; }
.brain-options legend { margin-bottom: 10px; color: var(--muted); font-size: 12px; }
.brain-option-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
#brainstormDialog .brain-option { padding: 10px 4px; border: 1px solid var(--line); border-radius: 10px; font-size: 12px; background: var(--paper); color: var(--ink); }
#brainstormDialog .brain-option.sage { background: color-mix(in srgb, #9abf9a 23%, var(--paper)); }
#brainstormDialog .brain-option.sand { background: color-mix(in srgb, #e4c67c 25%, var(--paper)); }
#brainstormDialog .brain-option.rose { background: color-mix(in srgb, #d7a4ad 23%, var(--paper)); }
#brainstormDialog .brain-option[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); font-weight: 600; }
#brainstormDialog .brain-scroll.is-placing,
#brainstormDialog .brain-scroll.is-placing * { cursor: grabbing; user-select: none; }
.brain-placement { pointer-events: none; opacity: .85; border-style: dashed; border-color: var(--ink); box-shadow: 0 10px 30px #0002; z-index: 2; }
.brain-placement-cancel { white-space: nowrap; }
.brain-selection-box { position: absolute; pointer-events: none; z-index: 5; border: 1px solid var(--ink); background: color-mix(in srgb, var(--ink) 10%, transparent); }
.brain-canvas { user-select: none; }
/* 보드 편집 공간 다음에 푸터가 이어져 캔버스 높이를 줄이지 않습니다. */
.desk main#brainstormDialog.brain-page {
  position: static; inset: auto; display: flex; flex-direction: column;
  flex: 1; width: 100%; max-width: none; height: auto; min-height: 0;
  padding: 0; margin: 0; gap: 0; align-items: stretch; overflow: visible;
}
.brainstorm-page.is-board-open main#brainstormDialog {
  flex: none;
  height: max(480px, calc(100dvh - var(--site-header-height, 69px)));
  overflow: auto;
}
.brain-page-status { position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%); z-index: 500; width: min(520px, calc(100% - 32px)); padding: 14px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); color: var(--ink); box-shadow: 0 8px 32px #0002; font-size: 13px; }
#brainConfirm { background: var(--paper); color: var(--ink); border: 1px solid var(--line); }