/**
 * Navigation, the settings sheet, and the buttons.
 */

/* ═══════════════════════════════════════════════════════════════════════
   NAVBAR — the shell. Sections are peers reached from here; the settings
   that used to fill this bar now live behind one button, because a bar of
   controls reads as a control panel and this one has to read as a way in.
   ═══════════════════════════════════════════════════════════════════════ */

.nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 3px solid var(--line);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 13px 22px;
  display: flex;
  align-items: center;
  gap: 8px 18px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  letter-spacing: 1px;
  margin-right: 6px;
}
.brand canvas {
  display: block;
  width: 30px;
  height: auto;
  image-rendering: pixelated;
}
.brand b {
  color: var(--accent);
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  flex: 1;
}
.nav-link {
  font-size: 14px;
  background: none;
  color: var(--ink-dim);
  border: 3px solid transparent;
  padding: 10px 13px 8px;
  cursor: pointer;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* Six views and a link off the site is one item more than the roomy padding affords on a laptop,
   and a navigation bar that wraps onto a second line reads as an accident. Tightened rather than
   truncated: the labels are the site's table of contents and abbreviating them costs more than the
   gap does. */
@media (max-width: 1680px) {
  .nav-link {
    padding: 10px 9px 8px;
    letter-spacing: 0.2px;
  }
}
@media (max-width: 1180px) {
  .nav-link {
    font-size: 13px;
    padding: 9px 7px 7px;
  }
}
.nav-link:hover {
  color: var(--ink);
  background: var(--panel);
}
.nav-link[aria-current="page"] {
  color: var(--on-accent);
  background: var(--accent);
  border-color: var(--accent);
}
.nav-link.out {
  color: var(--ink-dim);
  border-bottom: none;
}
.nav-link.out::after {
  content: " ↗";
}

.cog {
  font-size: 14px;
  background: var(--panel);
  color: var(--ink);
  border: 3px solid var(--line);
  box-shadow: 3px 3px 0 var(--line);
  padding: 11px 15px 9px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
}
.cog:hover {
  background: var(--panel-2);
}
.cog[aria-expanded="true"] {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}

.sheet {
  position: absolute;
  right: 22px;
  top: 100%;
  z-index: 210;
  width: min(320px, calc(100vw - 44px));
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: 6px 6px 0 var(--line);
  padding: 18px;
}
.sheet[hidden] {
  display: none;
}
.sheet .lbl {
  margin-bottom: 9px;
}
.sheet .group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.sheet .group:last-of-type {
  margin-bottom: 0;
}

.btn {
  font-size: 13px;
  background: var(--panel-2);
  color: var(--ink);
  border: 3px solid var(--line);
  box-shadow: 3px 3px 0 var(--line);
  padding: 8px 10px 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}
.btn:hover {
  background: var(--line);
}
.btn:active {
  transform: translate(3px, 3px);
  box-shadow: none;
}
.btn[aria-pressed="true"] {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  box-shadow: 3px 3px 0 var(--ink-dim);
}
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.chips {
  display: flex;
}
.chips i {
  width: 6px;
  height: 12px;
  display: block;
}

/* ═══════════════════════════════════════════════════════════════════════
   VIEWS — one document, four worlds. Switching resets scroll, because a
   view that opens halfway down is a view the reader has to re-find.
   ═══════════════════════════════════════════════════════════════════════ */

.view[hidden] {
  display: none;
}
.view-head {
  padding: 70px 0 34px;
}
.view-head h2 {
  font-size: clamp(23px, 3.2vw, 34px);
}
.view-head h2 span {
  color: var(--accent);
}
.view-head p {
  color: var(--ink-dim);
  max-width: 58ch;
  margin-top: 18px;
  font-size: 26px;
}

/* ── The tab transition ──────────────────────────────────────────────────
   A full-screen overlay above every other layer, and inert to the pointer:
   it covers the swap, it never intercepts a click meant for the page. */

.wipe {
  position: fixed;
  inset: 0;
  z-index: 400;
  pointer-events: none;
  display: grid;
  place-items: center;
}
.wipe[hidden] {
  display: none;
}
.wipe canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}
.wipe-name {
  position: relative;
  font-family: "Archivo", system-ui, sans-serif;
  font-size: clamp(17px, 2.4vw, 28px);
  color: var(--ink);
  opacity: 0;
  transform: translateY(15vh);
  font-weight: 800;
  letter-spacing: 0.1em;
}