/* Touch devices use a bottom bar; desktop uses a compact floating rail. */
:root { --workspace-nav-clearance: 84px; }
html { scroll-padding-bottom: var(--workspace-nav-clearance); }
.desk.has-workspace-nav { padding-bottom: var(--workspace-nav-clearance); }
.workspace-nav {
  position: fixed;
  z-index: 40;
  left: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  margin: 0;
  padding: 4px 8px calc(4px + env(safe-area-inset-bottom));
  border: 0;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.workspace-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 0;
  min-height: 60px;
  padding: 6px 8px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  opacity: .65;
}
.workspace-icon {
  display: block;
  flex: none;
  width: 28px;
  height: 28px;
  background: currentColor;
  -webkit-mask: var(--workspace-icon) center / contain no-repeat;
  mask: var(--workspace-icon) center / contain no-repeat;
}
.workspace-icon.icon-desk { --workspace-icon: url("../images/navigation/desk.png"); }
.workspace-icon.icon-scribble { --workspace-icon: url("../images/navigation/scribble.png"); }
.workspace-icon.icon-study { --workspace-icon: url("../images/navigation/study.png"); }
.workspace-icon.icon-thoughts { --workspace-icon: url("../images/navigation/thoughts.png"); }
.workspace-nav a:hover { color: var(--ink); opacity: 1; }
.workspace-nav a[aria-current="page"] { color: var(--desk-accent, var(--ink)); opacity: 1; }
.workspace-nav a:focus-visible { outline: 2px solid var(--desk-accent, var(--ink)); outline-offset: -2px; opacity: 1; }
.keyboard-open .workspace-nav { visibility: hidden; pointer-events: none; }
.brainstorm-page.is-board-open main#brainstormDialog {
  height: max(480px, calc(100dvh - var(--site-header-height, 69px) - var(--workspace-nav-clearance)));
}
#focusWorkspace[hidden], .tool-workspace[hidden], #focusAbout[hidden], .workspace-timer[hidden] { display: none; }
body[data-workspace="memo"] #main, body[data-workspace="study"] #main { width: 100%; max-width: 1208px; padding-top: 38px; min-height: 72vh; }
.tool-workspace { padding-bottom: 48px; }
.workspace-heading { margin: 12px 0 32px; }
.workspace-heading .eyebrow { color: var(--desk-accent, var(--ink)); margin-bottom: 10px; }
.desk .workspace-heading h1 { margin: 0; font-size: clamp(28px, 4vw, 40px); font-weight: 600; letter-spacing: -.05em; line-height: 1.4; }
.workspace-heading > p:last-child { color: var(--muted); margin: 12px 0 0; font-size: 14px; line-height: 1.8; }
.workspace-timer { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; padding: 14px 20px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: var(--paper); text-decoration: none; font-size: 13px; font-variant-numeric: tabular-nums; }
.workspace-timer > span:last-child { color: var(--muted); }
#memoWorkspace #memoContent { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 24px; align-items: start; }
#memoWorkspace #memoForm { grid-column: 2; grid-row: 1; position: relative; min-width: 0; margin: 0; padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); }
#memoWorkspace .memo-library { grid-column: 1; grid-row: 1; min-width: 0; }
#memoWorkspace #memoListTitle { margin: 0 0 16px; color: var(--muted); font-size: 13px; }
#memoWorkspace #memoList { max-height: 65vh; overflow-y: auto; padding: 2px; }
#memoWorkspace .dialog-head { margin-bottom: 8px; }
#memoWorkspace .dialog-head h2 { font-size: 18px; margin: 0; }
#memoWorkspace [data-close="memoDialog"] { display: none; }
#memoWorkspace .memo-editor { min-height: 320px; max-height: 55vh; padding: 18px; font-size: 16px; line-height: 1.9; background: var(--bg); }
#memoWorkspace .memo-save-actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
#memoWorkspace #memoNew { min-height: 40px; }
#memoWorkspace .primary { margin: 0; }
#memoWorkspace .memo-toolbar { max-width: calc(100% - 16px); }
#studyDialog.tool-workspace { width: 100%; margin: 0; }
#studyDialog .study-library-heading { margin: 0 0 24px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
#studyLibrary > .hint { display: none; }
#studyDialog #studyList { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
#studyDialog .study-set { min-height: 150px; align-content: space-between; padding: 24px; border-radius: 16px; background: var(--paper); }
#studyDialog .study-set strong { font-size: 18px; font-weight: 500; line-height: 1.6; }
#studyDialog .study-set:hover { border-color: var(--desk-accent, var(--ink)); }
#studyDialog .study-empty { grid-column: 1 / -1; padding: 64px 24px; text-align: center; border: 1px dashed var(--line); border-radius: 18px; background: var(--paper); }
#studyEditorPanel { max-width: 880px; margin: auto; }
#studyForm { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--paper); }
#studyTitle { width: 100%; margin: 10px 0 24px; }
#studyDialog .study-question { padding: 22px; background: var(--bg); }
#studyDialog .study-question textarea { height: 100px; background: var(--paper); }
#studyDialog .study-editor-actions { padding-top: 20px; border-top: 1px solid var(--line); }
#memoPracticeDialog { width: min(760px, calc(100% - 28px)); }
@media (max-width: 900px) {
  #memoWorkspace #memoContent { grid-template-columns: 240px minmax(0, 1fr); gap: 16px; }
  #studyDialog #studyList { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .workspace-nav { left: 0; bottom: 0; transform: none; width: 100%; padding: 4px 8px calc(4px + env(safe-area-inset-bottom)); border: 0; border-top: 1px solid var(--line); border-radius: 0; }
  .workspace-nav a { min-height: 58px; padding: 6px 2px; font-size: 11px; }
  body[data-workspace="memo"] #main, body[data-workspace="study"] #main { padding: 24px 16px 0; }
  .workspace-heading { margin: 8px 0 24px; }
  #memoWorkspace #memoContent { display: flex; flex-direction: column; gap: 18px; }
  #memoWorkspace #memoForm, #memoWorkspace .memo-library { width: 100%; }
  #memoWorkspace #memoForm { padding: 18px; }
  #memoWorkspace .memo-library { order: -1; }
  #memoWorkspace #memoList { display: flex; overflow-x: auto; max-height: none; gap: 10px; padding-bottom: 8px; }
  #memoWorkspace .memo-item { flex: 0 0 240px; }
  #memoWorkspace .memo-editor { min-height: 260px; font-size: 15px; }
  #studyDialog #studyList { grid-template-columns: minmax(0, 1fr); }
  #studyDialog .study-set { min-height: 128px; padding: 20px; }
  #studyForm { padding: 18px; }
  #studyDialog .study-question { padding: 16px; }
  #studyDialog .study-editor-actions { gap: 8px; }
}

/* Keep settings reachable without covering the note or question editor. */
#workspaceSettings[hidden] { display: none; }
#workspaceSettings .floating-controls {
  position: relative; inset: auto; display: flex; gap: 4px;
  width: auto; padding: 4px; margin: 0; transform: none;
  border: 0; border-radius: 0; background: transparent; box-shadow: none; backdrop-filter: none; opacity: 1;
}
#workspaceSettings .floating-controls .text-button span,
#workspaceSettings .quick-links > summary span {
  top: calc(100% + 10px); right: 0; transform: none;
}
#workspaceSettings .quick-links nav { top: calc(100% + 12px); right: 0; bottom: auto; }
@media (max-width: 600px) {
  .desk.has-workspace-nav #fullscreenButton { display: none; }
  #workspaceSettings { margin-left: auto; }
}

.has-workspace-nav #clockStage {
  height: max(320px, calc(100svh - var(--clock-stage-top, 130px) - var(--workspace-nav-clearance)));
  padding-bottom: 24px;
}
@media (min-width: 1025px) and (hover: hover) and (pointer: fine) {
  :root { --workspace-nav-clearance: 0px; }
  .desk.has-workspace-nav { padding-right: 92px; }
  .workspace-nav {
    left: auto; right: 20px; bottom: 24px;
    width: 62px; grid-template-columns: minmax(0, 1fr);
    gap: 4px; padding: 6px;
    border: 1px solid var(--line); border-radius: 30px;
    background: color-mix(in srgb, var(--paper) 94%, transparent);
    box-shadow: 0 6px 20px #0001;
  }
  .workspace-nav a { position: relative; min-height: 46px; padding: 9px; border-radius: 50%; }
  .workspace-nav a[aria-current="page"] { background: color-mix(in srgb, var(--desk-accent, var(--ink)) 10%, transparent); }
  .workspace-nav a > span:not(.sr-only) {
    position: absolute; right: calc(100% + 18px); top: 50%; transform: translateY(-50%);
    visibility: hidden; opacity: 0; pointer-events: none;
    padding: 8px 13px; border: 1px solid var(--line); border-radius: 10px;
    background: var(--paper); color: var(--ink); font-size: 13px;
  }
  .workspace-nav a:hover > span:not(.sr-only),
  .workspace-nav a:focus-visible > span:not(.sr-only) { visibility: visible; opacity: 1; }
}