/* ============================================================
   Home Architect Studio — graphite drafting-instrument theme
   ============================================================ */
:root {
  --bg: #0c1016;
  --panel: #131922;
  --panel-2: #0f141c;
  --line: #232c38;
  --line-soft: #1a212c;
  --ink: #d7e0e8;
  --ink-dim: #8a98a6;
  --ink-faint: #5c6873;
  --accent: #f5a524;
  --accent-soft: rgba(245, 165, 36, 0.14);
  --blue: #6ea8d8;
  --danger: #e2654f;
  --radius: 8px;
  --font-ui: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-display: "Big Shoulders Display", var(--font-ui);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------------- top bar ---------------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 50px;
  padding: 0 14px;
  background: linear-gradient(180deg, #11161f 0%, #0d1117 100%);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}
.brand { display: flex; align-items: baseline; gap: 7px; user-select: none; }
.brand svg { align-self: center; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.brand-sub {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.34em;
  color: var(--accent);
}
#planName {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font: 500 13px var(--font-ui);
  padding: 6px 10px;
  width: 190px;
  transition: border-color .15s;
}
#planName:focus { outline: none; border-color: var(--accent); }

.tb-group { display: flex; gap: 2px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 7px; padding: 2px; }
.tb {
  background: transparent;
  border: 0;
  border-radius: 5px;
  color: var(--ink-dim);
  font: 500 12px var(--font-ui);
  padding: 5px 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s, color .12s;
}
.tb:hover { background: #1b2330; color: var(--ink); }
.tb.active { background: var(--accent-soft); color: var(--accent); }
.tb.icon { padding: 5px 7px; display: grid; place-items: center; }
.tb.icon svg { width: 17px; height: 17px; display: block; }
.view-switch { margin-left: auto; }
.tb-select {
  background: transparent;
  border: 0;
  border-radius: 5px;
  color: var(--ink-dim);
  font: 500 12px var(--font-ui);
  padding: 5px 6px;
  cursor: pointer;
  max-width: 130px;
}
.tb-select:hover { background: #1b2330; color: var(--ink); }
.tb-select option { background: var(--panel); color: var(--ink); }
.pickbtn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: #141a23;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  color: var(--ink-dim);
  font: 500 11.5px var(--font-ui);
  padding: 6px 9px;
  margin-bottom: 4px;
  cursor: pointer;
  text-align: left;
}
.pickbtn span { font: 600 9.5px var(--font-mono); color: var(--ink-faint); }
.pickbtn:hover { border-color: var(--accent); color: var(--ink); }
.pickbtn.active { background: var(--accent-soft); border-color: rgba(245,165,36,0.5); color: var(--accent); }
.pickbtn.active span { color: var(--accent); }
#btnHelp { background: var(--panel-2); border: 1px solid var(--line); border-radius: 7px; }

/* ---------------- main layout ---------------- */
#main { display: flex; flex: 1 1 auto; min-height: 0; }

#toolbar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 7px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  flex: 0 0 auto;
}
.tool {
  width: 62px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 2px 7px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--ink-dim);
  cursor: pointer;
  transition: all .13s;
}
.tool svg { width: 22px; height: 22px; }
.tool span { font: 500 9.5px var(--font-ui); letter-spacing: 0.03em; }
.tool:hover { background: #1a2230; color: var(--ink); }
.tool.active {
  background: var(--accent-soft);
  border-color: rgba(245, 165, 36, 0.45);
  color: var(--accent);
}

#viewports { display: flex; flex: 1 1 auto; min-width: 0; }
.viewport { position: relative; flex: 1 1 50%; min-width: 0; background: #15202e; }
.viewport canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
#wrap3d { background: #1a2430; }

#splitter {
  flex: 0 0 7px;
  cursor: col-resize;
  background: var(--panel);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  position: relative;
}
#splitter::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 1.5px; height: 34px;
  transform: translate(-50%, -50%);
  background: var(--ink-faint);
  border-radius: 2px;
}
#splitter:hover::after { background: var(--accent); }

.vp-label {
  position: absolute;
  top: 10px; left: 12px;
  font: 700 10px var(--font-mono);
  letter-spacing: 0.22em;
  color: rgba(168, 208, 234, 0.7);
  background: rgba(10, 16, 24, 0.55);
  border: 1px solid rgba(110, 168, 216, 0.25);
  border-radius: 4px;
  padding: 4px 8px;
  pointer-events: none;
  user-select: none;
}
.vp-panel {
  position: absolute;
  bottom: 10px; left: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(10, 16, 24, 0.72);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
  backdrop-filter: blur(4px);
  user-select: none;
}
.vp-panel label {
  display: flex; align-items: center; gap: 4px;
  font: 500 11px var(--font-ui);
  color: var(--ink-dim);
  cursor: pointer;
}
.vp-panel label:hover { color: var(--ink); }
.vp-panel input { accent-color: var(--accent); }
.chips-title { font: 700 9px var(--font-mono); letter-spacing: .18em; color: var(--ink-faint); }

/* view modes */
body[data-view="plan"] #wrap3d, body[data-view="plan"] #splitter { display: none; }
body[data-view="three"] #planWrap, body[data-view="three"] #splitter { display: none; }

/* ---------------- right side: tabs + panels ---------------- */
#rightside {
  flex: 0 0 268px;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border-left: 1px solid var(--line);
  min-height: 0;
}
#ptabs {
  display: flex;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
#ptabs button {
  flex: 1;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--ink-dim);
  font: 600 11px var(--font-ui);
  padding: 9px 2px;
  cursor: pointer;
}
#ptabs button:hover { color: var(--ink); }
#ptabs button.active { color: var(--accent); border-bottom-color: var(--accent); }
.ptab-panel { display: none; overflow-y: auto; padding: 12px; flex: 1 1 auto; min-height: 0; }
.ptab-panel.active { display: block; }
input.txt {
  width: 132px;
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font: 500 12px var(--font-ui);
  padding: 5px 7px;
}
input.txt:focus { outline: none; border-color: var(--accent); }
.psection {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel-2);
  padding: 11px 12px 12px;
  margin-bottom: 10px;
}
.psection h3 {
  font: 700 10px var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 9px;
}
.prow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 7px;
}
.prow label { color: var(--ink-dim); font-size: 12px; flex: 1 1 auto; }
.pval { display: flex; align-items: center; gap: 5px; }
input.len {
  width: 86px;
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font: 600 12px var(--font-mono);
  text-align: right;
  padding: 5px 7px;
}
input.len:focus { outline: none; border-color: var(--accent); }
select {
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font: 500 12px var(--font-ui);
  padding: 5px 6px;
  max-width: 140px;
}
input.color {
  width: 42px; height: 26px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #0b0f15;
  padding: 2px;
  cursor: pointer;
}
.sliderwrap { display: flex; align-items: center; gap: 7px; }
.sliderwrap input[type="range"] { width: 90px; accent-color: var(--accent); }
.sliderval { font: 600 12px var(--font-mono); color: var(--ink); min-width: 38px; text-align: right; }
.switch { position: relative; display: inline-block; cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch .knob {
  display: block;
  width: 34px; height: 18px;
  border-radius: 10px;
  background: #2a3442;
  transition: background .15s;
  position: relative;
}
.switch .knob::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--ink-dim);
  transition: transform .15s, background .15s;
}
.switch input:checked + .knob { background: var(--accent-soft); }
.switch input:checked + .knob::after { transform: translateX(16px); background: var(--accent); }
.pbtn {
  width: 100%;
  background: #1a2230;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font: 500 12px var(--font-ui);
  padding: 7px 8px;
  cursor: pointer;
  margin-bottom: 6px;
  transition: all .12s;
}
.pbtn:hover { border-color: var(--accent); color: var(--accent); }
.pbtn.danger:hover { border-color: var(--danger); color: var(--danger); }
.pval .pbtn { width: auto; margin-bottom: 0; padding: 6px 9px; }
.phint { color: var(--ink-faint); font-size: 11px; line-height: 1.45; margin-top: 4px; }

/* ---------------- status bar ---------------- */
#status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 26px;
  padding: 0 12px;
  background: var(--panel-2);
  border-top: 1px solid var(--line);
  font: 500 11px var(--font-mono);
  color: var(--ink-dim);
  flex: 0 0 auto;
  user-select: none;
}
#statusCoords { color: var(--blue); }

/* ---------------- help overlay ---------------- */
#helpOverlay {
  position: fixed; inset: 0;
  background: rgba(5, 8, 12, 0.66);
  backdrop-filter: blur(3px);
  display: none;
  place-items: center;
  z-index: 60;
}
#helpOverlay.open { display: grid; }
.help-card {
  width: min(560px, 92vw);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 30px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}
.help-card h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: 0.03em;
}
.help-lede { color: var(--ink-dim); margin: 6px 0 16px; }
.help-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 26px; }
.help-cols dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; align-content: start; }
.help-cols dt {
  font: 600 11px var(--font-mono);
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 2px 7px;
  text-align: center;
  white-space: nowrap;
}
.help-cols dd { color: var(--ink-dim); font-size: 12.5px; align-self: center; }
.help-tips {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-faint);
  font-size: 12px;
  line-height: 1.55;
}
.help-tips code {
  font-family: var(--font-mono);
  color: var(--blue);
  background: #0b0f15;
  padding: 1px 5px;
  border-radius: 4px;
}

/* ---------------- boot error ---------------- */
#bootError {
  position: fixed; inset: 0;
  display: grid;
  place-items: center;
  background: var(--bg);
  z-index: 100;
  text-align: center;
}
#bootError[hidden] { display: none; }
#bootError h2 { font-family: var(--font-display); font-size: 28px; margin-bottom: 10px; }
#bootError p { color: var(--ink-dim); line-height: 1.6; }

/* ---------------- level switcher ---------------- */
.vp-top { top: 10px; bottom: auto; left: auto; right: 12px; }
#levelSwitch select {
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink);
  font: 600 11px var(--font-ui);
  padding: 3px 5px;
}
#levelSwitch button {
  background: var(--accent-soft);
  border: 1px solid rgba(245,165,36,0.4);
  border-radius: 5px;
  color: var(--accent);
  font: 600 11px var(--font-ui);
  padding: 3px 8px;
  cursor: pointer;
}

/* ---------------- chat ---------------- */
.chatbtn {
  display: flex; align-items: center; gap: 5px;
  background: var(--accent-soft) !important;
  border: 1px solid rgba(245,165,36,0.45) !important;
  border-radius: 7px !important;
  color: var(--accent) !important;
  font-weight: 700 !important;
}
.chatbtn svg { width: 16px; height: 16px; }
#chatDrawer {
  position: fixed;
  top: 50px; right: -420px; bottom: 26px;
  width: 408px;
  background: var(--panel);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  z-index: 50;
  transition: right .22s ease;
  box-shadow: -18px 0 40px rgba(0,0,0,0.35);
}
#chatDrawer.open { right: 0; }
.chat-head {
  display: flex; align-items: center; gap: 7px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.chat-head strong { flex: 1; font: 700 13px var(--font-ui); color: var(--accent); }
.chat-head select {
  background: #0b0f15; border: 1px solid var(--line); border-radius: 5px;
  color: var(--ink); font: 500 11px var(--font-ui); padding: 4px;
}
.chat-head button {
  background: #1a2230; border: 1px solid var(--line); border-radius: 5px;
  color: var(--ink-dim); padding: 4px 8px; cursor: pointer; font-size: 12px;
}
.chat-head button:hover { color: var(--accent); border-color: var(--accent); }
#chatMsgs { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.cmsg {
  font: 400 12.5px var(--font-ui);
  line-height: 1.5;
  padding: 8px 11px;
  border-radius: 9px;
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 94%;
}
.cmsg.user { background: #1c2735; color: var(--ink); align-self: flex-end; }
.cmsg.assistant { background: var(--panel-2); border: 1px solid var(--line-soft); color: var(--ink); }
.cmsg.tool {
  /* .tool is ALSO the toolbar-button class (width:62px, flex column) —
     undo that here so chat tool lines get full width. */
  display: block; width: auto; max-width: 94%;
  background: transparent; border: none; color: var(--ink-faint);
  font: 500 10.5px var(--font-mono); padding: 0 4px;
}
.cmsg.system { background: rgba(226,101,79,0.12); color: var(--danger); }
.cmsg.busy { color: var(--accent); font: 600 11px var(--font-mono); background: transparent; }
.chat-input {
  display: flex; gap: 7px;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
}
.chat-input textarea {
  flex: 1;
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--ink);
  font: 400 12.5px var(--font-ui);
  padding: 8px;
  resize: none;
}
.chat-input textarea:focus { outline: none; border-color: var(--accent); }
.chat-input button {
  background: var(--accent);
  border: 0; border-radius: 7px;
  color: #1a1208;
  font: 700 12px var(--font-ui);
  padding: 0 16px;
  cursor: pointer;
}
.chat-input button:disabled { opacity: 0.5; cursor: wait; }

/* ---------------- sheets workspace ---------------- */
#sheetsView { display: none; flex: 1 1 auto; min-width: 0; }
body[data-view="sheets"] #viewports, body[data-view="sheets"] #splitter { display: none; }
body[data-view="sheets"] #sheetsView { display: flex; }
body[data-view="sheets"] #toolbar { display: none; }
#sheetList {
  flex: 0 0 250px;
  border-right: 1px solid var(--line);
  background: var(--panel);
  display: flex; flex-direction: column;
  min-height: 0;
}
.sl-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font: 700 10px var(--font-mono);
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}
.sl-head button, .sl-foot button {
  background: var(--accent-soft);
  border: 1px solid rgba(245,165,36,0.4);
  border-radius: 6px;
  color: var(--accent);
  font: 600 11px var(--font-ui);
  padding: 5px 9px;
  cursor: pointer;
}
#sheetRows { flex: 1; overflow-y: auto; }
.sheetrow {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 10px;
  border-bottom: 1px solid var(--line-soft);
  cursor: pointer;
}
.sheetrow:hover { background: #1a2230; }
.sheetrow.active { background: var(--accent-soft); }
.sheetrow .shnum {
  width: 52px;
  background: #0b0f15; border: 1px solid var(--line); border-radius: 4px;
  color: var(--accent); font: 700 11px var(--font-mono);
  padding: 3px 4px; text-align: center;
}
.sheetrow .shtitle {
  flex: 1;
  background: transparent; border: 1px solid transparent; border-radius: 4px;
  color: var(--ink); font: 500 11.5px var(--font-ui); padding: 3px 4px;
  min-width: 0;
}
.sheetrow .shtitle:hover, .sheetrow .shtitle:focus { background: #0b0f15; border-color: var(--line); outline: none; }
.sheetrow .shdel { background: none; border: 0; color: var(--ink-faint); cursor: pointer; }
.sheetrow .shdel:hover { color: var(--danger); }
.sl-foot { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); }
#sheetStage { flex: 1; display: flex; flex-direction: column; min-width: 0; background: #10151c; }
#sheetTools {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
#sheetTools button {
  background: #1a2230; border: 1px solid var(--line); border-radius: 6px;
  color: var(--ink-dim); font: 500 11px var(--font-ui);
  padding: 5px 9px; cursor: pointer; white-space: nowrap;
}
#sheetTools button:hover { color: var(--accent); border-color: var(--accent); }
.st-gap { flex: 0 0 12px; }
#sheetScroll { flex: 1; overflow: auto; padding: 18px; }
#sheetCanvas {
  display: block;
  margin: 0 auto;
  box-shadow: 0 14px 50px rgba(0,0,0,0.5);
  background: #fff;
}

/* ---------------- materials tab ---------------- */
.matgrid { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 9px; }
.matcat { flex: 1 0 100%; font: 700 9px var(--font-mono); letter-spacing: 0.16em; color: var(--ink-faint); margin-top: 5px; }
.matcell {
  width: 72px;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: #0b0f15;
  text-align: center;
}
.matcell canvas { display: block; width: 100%; height: 40px; object-fit: cover; }
.matcell span { display: block; font: 500 8.5px var(--font-ui); color: var(--ink-dim); padding: 3px 2px 4px; line-height: 1.2; }
.matcell:hover { border-color: var(--ink-dim); }
.matcell.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.matcell.sel span { color: var(--accent); }

/* ---------------- blocks tab ---------------- */
.blockrow {
  display: flex; gap: 9px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  padding: 8px;
  margin-bottom: 8px;
  background: var(--panel-2);
}
.blockrow canvas { border-radius: 4px; flex: 0 0 auto; }
.blockinfo { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.blockinfo strong { font: 600 12px var(--font-ui); color: var(--ink); }
.blockinfo span { font: 400 10.5px var(--font-ui); color: var(--ink-faint); }
.blockbtns { display: flex; gap: 5px; margin-top: 4px; }
.blockbtns .pbtn { width: auto; padding: 4px 8px; margin: 0; font-size: 10.5px; }

/* ---------------- project notes ---------------- */
.noterow {
  display: flex; gap: 7px; align-items: flex-start;
  border-bottom: 1px solid var(--line-soft);
  padding: 6px 0;
}
.notecat {
  font: 700 8.5px var(--font-mono);
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 3px;
  padding: 2px 5px;
  flex: 0 0 auto;
}
.noterow p { flex: 1; font: 400 11px var(--font-ui); color: var(--ink-dim); line-height: 1.4; }
.notedel { background: none; border: 0; color: var(--ink-faint); cursor: pointer; }
.notedel:hover { color: var(--danger); }
.notearea {
  width: 100%;
  min-height: 54px;
  background: #0b0f15;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font: 400 12px var(--font-ui);
  padding: 7px;
  margin: 6px 0;
  resize: vertical;
}
.notearea:focus { outline: none; border-color: var(--accent); }

/* ---------------- block editor ---------------- */
#blockEditor {
  position: fixed; inset: 0;
  background: rgba(5,8,12,0.7);
  display: none;
  place-items: center;
  z-index: 70;
}
#blockEditor.open { display: grid; }
.be-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  max-width: 94vw; max-height: 92vh;
  overflow: auto;
  box-shadow: 0 30px 80px rgba(0,0,0,0.55);
}
.be-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.be-head input {
  background: #0b0f15; border: 1px solid var(--line); border-radius: 6px;
  color: var(--ink); font: 600 13px var(--font-ui); padding: 6px 9px;
}
#beDesc { width: 240px; font-weight: 400 !important; }
.be-tools { display: flex; gap: 4px; }
.be-tools button, .be-actions button {
  background: #1a2230; border: 1px solid var(--line); border-radius: 6px;
  color: var(--ink-dim); font: 500 12px var(--font-ui); padding: 6px 10px; cursor: pointer;
}
.be-tools button.active { background: var(--accent-soft); color: var(--accent); border-color: rgba(245,165,36,0.4); }
.be-actions { margin-left: auto; display: flex; gap: 6px; }
.be-actions .primary { background: var(--accent); color: #1a1208; font-weight: 700; }
#beCanvas { display: block; border-radius: 6px; cursor: crosshair; max-width: 100%; }
.be-status { font: 500 10.5px var(--font-mono); color: var(--ink-faint); margin-top: 8px; }

/* ---------------- print ---------------- */
#printArea { display: none; }
@media print {
  body > #app, #chatDrawer, #helpOverlay, #blockEditor { display: none !important; }
  #printArea { display: block !important; }
  #printArea .printSheet {
    width: 100%;
    page-break-after: always;
    display: block;
  }
  @page { size: landscape; margin: 0.25in; }
  body { background: #fff; overflow: visible; }
}

/* scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #232c38; border-radius: 6px; }
::-webkit-scrollbar-track { background: transparent; }

/* ===== AI demo polish (hackathon) ===== */
/* chat tool lines: `.tool` is ALSO the toolbar-button class (width:62px,
   flex column) — undo that here so chat tool lines use the full row. */
.cmsg.tool { display: block; width: auto; max-width: 94%; }

/* pulsing AI button while the plan is blank */
#btnChat.attn {
  color: var(--accent);
  border-color: rgba(245, 165, 36, 0.55);
  animation: aiPulse 1.6s ease-in-out infinite;
}
@keyframes aiPulse {
  0% { box-shadow: 0 0 0 0 rgba(245, 165, 36, 0.55); }
  70% { box-shadow: 0 0 0 11px rgba(245, 165, 36, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 165, 36, 0); }
}

/* "Get started" hint under the AI button on a blank plan */
#aiHint {
  position: fixed; top: 54px; right: 46px; z-index: 60;
  background: rgba(245, 165, 36, 0.14);
  border: 1px solid rgba(245, 165, 36, 0.55);
  color: var(--accent);
  padding: 8px 13px; border-radius: 10px;
  font: 600 12.5px var(--font-ui);
  pointer-events: none;
  animation: hintBounce 1.4s ease-in-out infinite;
}
@keyframes hintBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* starter prompt cards in an empty chat */
.chat-starters { display: flex; flex-direction: column; gap: 9px; padding: 2px; }
.starters-head {
  font: 700 11px var(--font-ui); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-faint); padding: 2px 2px 3px;
}
.starter-card {
  background: var(--panel-2); border: 1px solid var(--line-soft);
  border-radius: 10px; padding: 11px 13px; cursor: pointer;
  transition: border-color 0.15s, transform 0.15s;
}
.starter-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.starter-card h4 { margin: 0 0 3px; font: 700 13px var(--font-ui); color: var(--ink); }
.starter-card p { margin: 0; font: 400 11.5px var(--font-ui); color: var(--ink-faint); line-height: 1.45; }