/* Navigation: the screen header, the dock (tape, status line, key bar), the MENU
   overlay, the HELP directory and the TAPE screen. Same tokens and scales as style.css:
   spacing 2 4 6 8 12 16 24 32, type 11 12 13 14 16 18 24. */

/* ---- Dock: tape (optional) above the status line, key bar at the bottom ---- */
/* style.css hides the tape by default (--tape-h: 0, .tape display none). TAPE ON puts
   body.has-tape on the page, and the TAPE screen shows its own strip. */
body.has-tape { --tape-h: 26px; --dock-h: calc(var(--status-h) + var(--tape-h) + var(--keybar-h) + 2px); }
body.has-tape .dock > .tape:not([hidden]) { display: block; }
.dock > .tape { border-top: 0; }
.tape[hidden] { display: none; }
.tape.tape-panel { display: block; --tape-h: 26px; }

/* Status line: messages left, the legal line right. */
.status-msg { min-width: 0; }

.fkey-share, .fkey-menu {
  border: 0; border-left: 1px solid var(--rule);
  background: transparent;
  font-family: var(--font);
  cursor: pointer;
  padding: 0 12px;
  gap: 8px;
}
.fkey-share { margin-left: auto; }
.fkey-menu .fkey-n { font-size: 11px; }

/* ---- The screen's name in the command bar, with the watch star on stock screens -- */
.cmd-label {
  flex: 0 1 auto; min-width: 0; max-width: 28ch;
  display: flex; align-items: center; gap: 2px;
  height: 22px; padding: 0 0 0 8px;
  background: var(--accent-tint); border-left: 2px solid var(--accent);
}
.cmd-label-text {
  min-width: 0; padding-right: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cmd-label-text:empty { display: none; }
.cmd-label:has(> .cmd-label-text:empty):has(> .head-star[hidden]) { display: none; }
.head-star { align-self: stretch; margin: 0; padding: 0 6px; border-right: 0; font-size: 14px; }
.head-star[hidden] { display: none; }
.cmd-label-text:not(:empty) + .head-star { margin-left: -6px; }

/* ---- Stock screens: one tab strip under the command bar ------------------------ */
.tickerbar { margin: 4px var(--inset) 0; border: 1px solid var(--rule-strong); }
.tickerbar[hidden] { display: none; }
/* More functions off to the right: an arrow over a fade at the edge says the strip
   scrolls (in place of the plain fade, which hid the cut). */
.tickerbar.scroll-x.fade-r { -webkit-mask-image: none; mask-image: none; }
.tickerbar.scroll-x.fade-l.fade-r {
  -webkit-mask-image: linear-gradient(to left, #000 calc(100% - 24px), transparent);
  mask-image: linear-gradient(to left, #000 calc(100% - 24px), transparent);
}
.tickerbar.fade-r::after {
  content: '\203A';
  position: sticky; right: 0;
  flex: 0 0 40px; margin-left: -40px;
  display: flex; align-items: center; justify-content: flex-end; padding-right: 8px;
  background: linear-gradient(to right, transparent, var(--panel) 55%);
  color: var(--accent); font-size: 18px; font-weight: 600; line-height: 1;
  pointer-events: none;
}

/* ---- MENU overlay (Ctrl+K) ---------------------------------------------------- */
.menu-overlay {
  position: fixed; inset: 0; z-index: 50;
  display: flex; justify-content: center; align-items: flex-start;
  padding: 64px 16px 16px;
  background: hsla(213, 43%, 3%, .8);
}
.menu-overlay[hidden] { display: none; }
.menu {
  display: flex; flex-direction: column;
  width: min(1040px, 100%);
  max-height: calc(100vh - 96px);
  background: var(--panel);
  border: 1px solid var(--rule-strong);
  box-shadow: 0 15px 35px hsla(0, 0%, 0%, .5);
}
.menu-search {
  display: flex; align-items: center; gap: 12px;
  height: 48px; padding: 0 16px;
  border-bottom: 1px solid var(--rule-strong);
}
.menu-q, .help-q {
  flex: 1; min-width: 0;
  padding: 0; border: 0; outline: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font); font-size: 16px;
}
.menu-q::placeholder, .help-q::placeholder { color: var(--dim); opacity: 1; }
.menu-q::-webkit-search-cancel-button, .help-q::-webkit-search-cancel-button { display: none; }
.menu-keys { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--dim); white-space: nowrap; }
.menu-keys kbd:not(:first-child) { margin-left: 6px; }
.menu-body { overflow: auto; padding: 16px; }
.mn-grid { columns: 3 280px; column-gap: 32px; }
.mn-cat { break-inside: avoid; margin-bottom: 16px; }
.mn-h, .hs-h {
  margin: 0 0 6px;
  font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--dim);
}
.mn-item {
  display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 12px; align-items: baseline;
  margin: 0 -8px; padding: 2px 8px;
  color: var(--text);
}
.mn-item:hover, .mn-item.is-active { background: var(--panel-3); text-decoration: none; }
.mn-name { font-weight: 600; }
.mn-sum { font-size: 12px; color: var(--dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mn-found .mn-item { grid-template-columns: 136px minmax(0, 1fr); padding: 6px 8px; }
.mn-found .mn-sum { color: var(--text-2); white-space: normal; }
.mn-none { color: var(--dim); }
.menu-foot { padding: 8px 16px; border-top: 1px solid var(--rule); font-size: 12px; color: var(--dim); }
body.menu-open { overflow: hidden; }

/* ---- HELP: search on top, categories left, commands right --------------------- */
.help { display: grid; gap: 16px; padding-top: 4px; }
.help-search {
  display: flex; align-items: center; gap: 12px;
  height: 44px; padding: 0 16px;
  background: var(--panel);
  border: 1px solid var(--rule-strong);
}
.help-search:focus-within { border-color: var(--accent); }
.help-search .prompt { font-size: 14px; }
.help-count { font-size: 12px; white-space: nowrap; }
.help-body { display: grid; grid-template-columns: 224px minmax(0, 1fr); gap: 32px; align-items: start; }
.help-cats {
  position: sticky; top: calc(var(--cmd-h) + 8px);
  display: flex; flex-direction: column;
}
.help-cat {
  display: flex; justify-content: space-between; gap: 8px;
  padding: 6px 12px;
  border: 0; border-left: 2px solid transparent;
  background: transparent;
  color: var(--text-2);
  font-family: var(--font); font-size: 13px; text-align: left;
  cursor: pointer;
}
.help-cat:hover { color: var(--text); background: var(--panel-2); }
.help-cat.is-active { color: var(--text); font-weight: 600; background: var(--panel-2); border-left-color: var(--accent); }
.help-n { color: var(--dim); font-weight: 400; }
.help-main { min-width: 0; }
.help-h { margin: 0 0 12px; font-size: 16px; font-weight: 600; color: var(--text); }
.help-tip { margin-top: 12px; font-size: 12px; }

.hc-list { margin: 0 0 8px; }
.hc-row {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr) minmax(0, 300px) minmax(0, 208px);
  gap: 16px; align-items: baseline;
  padding: 6px 8px;
  border-bottom: 1px solid var(--rule);
}
.hc-row:hover { background: var(--panel-2); }
.hc-row.is-active { background: var(--panel-3); }
.hc-name { font-weight: 600; color: var(--text); overflow-wrap: anywhere; }
.hc-name:hover { color: var(--accent); }
.hc-sum { color: var(--text-2); }
.hc-cat { display: block; font-size: 11px; color: var(--dim); }
.hc-syn { font-size: 12px; color: var(--dim); overflow-wrap: anywhere; }
.hc-ex { overflow-wrap: anywhere; }
.hc-ex .code { white-space: normal; }
.hc-soon { font-size: 11px; letter-spacing: .1em; color: var(--dim); }
.hc-row.is-soon .hc-name, .hc-row.is-soon .hc-sum { color: var(--dim); }
.hc-row-fn { grid-template-columns: 200px minmax(0, 1fr); }
.hc-row-fn .hc-name { color: var(--accent); }

.hs-list { columns: 3 320px; column-gap: 32px; margin: 0 0 8px; }
.hs-row {
  display: grid; grid-template-columns: 124px minmax(0, 1fr); gap: 12px; align-items: baseline;
  break-inside: avoid;
  padding: 4px 8px;
  border-bottom: 1px solid var(--rule);
}
.hs-row:hover { background: var(--panel-2); }
.hs-cmd { font-weight: 600; color: var(--text); overflow-wrap: anywhere; }
.hs-cmd:hover { color: var(--accent); text-decoration: none; }
.hs-what { color: var(--text-2); }
.hs-keys { margin-top: 12px; font-size: 12px; color: var(--text-2); line-height: 2; }
.hs-sep { margin: 0 4px; color: var(--faint); }

.hd { max-width: 880px; }
.hd-name { margin: 0; font-size: 24px; font-weight: 600; line-height: 1.2; color: var(--text); }
.hd-sum { margin-top: 4px; font-size: 14px; color: var(--text-2); }
.hd-dl { margin: 16px 0 24px; }
.hd-row { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 16px; padding: 8px 0; border-top: 1px solid var(--rule); }
.hd-row dt { padding-top: 2px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
.hd-row dd { margin: 0; color: var(--text-2); }
.hd-syn { color: var(--text) !important; font-weight: 600; overflow-wrap: anywhere; }
.hd-opts { border-collapse: collapse; }
.hd-opts th { padding: 2px 16px 2px 0; text-align: left; vertical-align: top; white-space: nowrap; font-weight: 600; color: var(--text); }
.hd-opts td { padding: 2px 0; color: var(--text-2); }
.hd-ex, .hd-rel { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.hd-cat { padding: 0; border: 0; background: transparent; color: var(--accent); font-family: var(--font); font-size: 13px; cursor: pointer; }
.hd-cat:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---- TAPE screen ------------------------------------------------------------- */
.tape-panel { border-top: 0; }
.tape-set { display: grid; gap: 12px; padding: 16px; }
.tape-state { font-size: 14px; color: var(--text); }
.tape-set .seg { justify-self: start; }
.tape-contents { margin-top: 16px; }
.tape-contents .panel-body { padding: 12px 16px; }
.is-embed .tape-panel { border-bottom: 0; }

/* ---- Narrower screens --------------------------------------------------------- */
@media (max-width: 1100px) {
  .hc-row { grid-template-columns: 136px minmax(0, 1fr) minmax(0, 208px); }
  .hc-syn { display: none; }
  .help-body { grid-template-columns: 192px minmax(0, 1fr); gap: 24px; }
}

@media (max-width: 639px) {
  .cmd-label { max-width: 12ch; padding-left: 6px; }
  .cmd-label-text { padding-right: 6px; font-size: 11px; }

  .fkeys .fkey:not(.is-mobile) { display: none; }
  .fkeys .fkey-n, .fkey-menu .fkey-n { display: none; }
  .fkeys .fkey { padding: 0 10px; }
  .fkey-share, .fkey-menu { padding: 0 10px; }

  .menu-overlay { padding: 8px; }
  .menu { max-height: calc(100vh - 16px); }
  .menu-keys { display: none; }
  .mn-grid { columns: 1; }

  .help-body { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .help-cats {
    position: static; flex-direction: row; overflow-x: auto; scrollbar-width: none;
    margin: 0 calc(var(--gutter) * -1); padding: 0 var(--gutter);
  }
  .help-cats::-webkit-scrollbar { display: none; }
  .help-cat { flex: 0 0 auto; border-left: 0; border-bottom: 2px solid transparent; white-space: nowrap; }
  .help-cat.is-active { border-bottom-color: var(--accent); }
  .help-n { display: none; }
  .help-q, .menu-q { font-size: 16px; }
  .hc-row, .hc-row-fn { grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 8px; }
  .hs-list { columns: 1; }
  .hd-row { grid-template-columns: minmax(0, 1fr); gap: 4px; }
}