/* Port — inject layer: title tagline, nav, about panel, poster fallback.
   Reuses the scene's tokens (--color-offwhite / --color-offblack / --color-main,
   --font-body / --font-display) and its .glass-surface frosted backdrop. */

:root {
  --port-ink: var(--color-offwhite, #f2f0eb);
  --port-bg: var(--color-offblack, #0c0c0c);
  --port-accent: var(--color-main, #556e3a);
  --port-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --port-z-fallback: 300;
  --port-z-nav: 420;
  --port-z-panel: 880;
}

/* ── Title tagline ─────────────────────────────────────────────────────── */
.title__tagline {
  margin: 14px 0 0;
  max-width: 34ch;
  font: 400 11px/1.55 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--port-ink) 88%, transparent);
  text-shadow: 0 1px 2px #000000b3, 0 2px 14px #00000080;
}
@media (width <= 760px) {
  .title__tagline { margin-top: 10px; font-size: 9px; letter-spacing: 0.12em; max-width: 28ch; }
  .title { max-width: min(62vw, 420px); }
}

/* ── Nav ───────────────────────────────────────────────────────────────── */
.port-nav {
  position: fixed;
  top: var(--title-inset-y, 24px);
  right: var(--title-inset-x, 24px);
  z-index: var(--port-z-nav);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid color-mix(in srgb, var(--port-ink) 18%, transparent);
  border-radius: 8px;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: opacity 0.85s var(--port-ease) 0.35s, transform 0.85s var(--port-ease) 0.35s;
}
body.scene-ready .port-nav,
html.port-fallback .port-nav { opacity: 1; transform: none; pointer-events: auto; }
.cinematic-mode--active .port-nav {
  opacity: 0 !important; pointer-events: none !important;
  transition-duration: 0.35s; transition-delay: 0s;
}
/* .glass-surface paints its ::before at z 0 over static children — lift them */
.port-nav > * { position: relative; z-index: 1; }
.port-nav.glass-surface::before,
.port-panel.glass-surface::before,
.fallback__note.glass-surface::before { background: #0c0c0c80; }
.port-nav__brand {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 7px;
  color: var(--port-ink); text-decoration: none;
  font: 400 12px/1 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.14em; text-transform: uppercase;
}
.port-nav__mark { width: 22px; height: 22px; border-radius: 50%; display: block; }
.port-nav__links { display: flex; align-items: center; gap: 3px; }
.port-nav__link {
  appearance: none; background: 0 0; cursor: pointer;
  border: 1px solid transparent; border-radius: 2px;
  padding: 9px 11px;
  color: color-mix(in srgb, var(--port-ink) 78%, transparent);
  font: 400 11px/1 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none; white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.port-nav__link:hover, .port-nav__link:focus-visible {
  color: var(--port-ink);
  border-color: color-mix(in srgb, var(--port-ink) 40%, transparent);
  outline: none;
}
.port-nav__link[aria-expanded="true"] {
  border-color: color-mix(in srgb, var(--port-ink) 42%, transparent);
  background: color-mix(in srgb, var(--port-ink) 12%, transparent);
  color: var(--port-ink);
}
.port-nav__cta {
  border-color: color-mix(in srgb, var(--port-ink) 70%, transparent);
  color: var(--port-ink);
  background: color-mix(in srgb, var(--port-ink) 8%, transparent);
}
.port-nav__cta:hover, .port-nav__cta:focus-visible {
  background: var(--port-accent); border-color: var(--port-accent);
}
.port-nav__menu {
  display: none; appearance: none; background: 0 0; border: 0; cursor: pointer;
  width: 34px; height: 34px; padding: 6px; border-radius: 50%;
}
.port-nav__menu img { width: 22px; height: 22px; border-radius: 50%; display: block; }
@media (width <= 760px) {
  .port-nav { top: 12px; right: 12px; padding: 3px; border-radius: 999px; gap: 0; }
  .port-nav__brand, .port-nav__links { display: none; }
  .port-nav__menu { display: block; }
}

/* ── About panel ───────────────────────────────────────────────────────── */
.port-panel__backdrop {
  position: fixed; inset: 0; z-index: calc(var(--port-z-panel) - 1);
  background: #0c0c0c73;
  opacity: 0; pointer-events: none;
  transition: opacity 0.4s var(--port-ease);
}
.port-panel {
  position: fixed; z-index: var(--port-z-panel);
  top: 50%; left: 50%;
  width: min(980px, calc(100vw - 32px));
  max-height: min(88vh, 860px);
  display: grid; grid-template-rows: auto minmax(0, 1fr) auto;
  border: 1px solid color-mix(in srgb, var(--port-ink) 18%, transparent);
  border-radius: 8px;
  color: var(--port-ink);
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translate(-50%, -47%);
  transition: opacity 0.45s var(--port-ease), transform 0.45s var(--port-ease), visibility 0s linear 0.45s;
}
.port-panel__backdrop.is-open { opacity: 1; pointer-events: auto; }
.port-panel.is-open {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translate(-50%, -50%);
  transition: opacity 0.45s var(--port-ease), transform 0.45s var(--port-ease), visibility 0s;
}
.port-panel__head {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: auto 1fr auto auto; align-items: center; gap: 12px 14px;
  padding: 16px 18px 14px;
  border-bottom: 1px solid color-mix(in srgb, var(--port-ink) 12%, transparent);
}
.port-panel__mark { width: 26px; height: 26px; border-radius: 50%; display: block; }
.port-panel__title {
  margin: 0;
  font: 400 11px/1.3 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--port-ink);
}
.port-panel__index {
  font: 400 11px/1 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.08em; text-transform: uppercase; white-space: nowrap;
  color: color-mix(in srgb, var(--port-ink) 48%, transparent);
}
.port-panel__close {
  appearance: none; cursor: pointer;
  border: 1px solid color-mix(in srgb, var(--port-ink) 48%, transparent);
  border-radius: 2px; background: 0 0;
  padding: 8px 11px;
  color: color-mix(in srgb, var(--port-ink) 92%, transparent);
  font: 400 11px/1 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  letter-spacing: 0.14em; text-transform: uppercase;
  transition: background 0.2s, border-color 0.2s;
}
.port-panel__close:hover, .port-panel__close:focus-visible {
  background: var(--port-accent); border-color: var(--port-accent); outline: none;
}
.port-panel__scroll {
  position: relative; z-index: 1;
  overflow: hidden auto; min-height: 0;
  padding: 18px 18px 6px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--port-ink) 30%, transparent) transparent;
}
.port-panel__lede {
  margin: 0 0 18px;
  max-width: 62ch;
  font: 400 15px/1.55 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  color: color-mix(in srgb, var(--port-ink) 92%, transparent);
}
.port-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid color-mix(in srgb, var(--port-ink) 10%, transparent);
}
.port-group {
  display: grid; align-content: start; gap: 10px;
  padding: 14px 16px 16px;
  min-width: 0;
}
.port-group + .port-group { border-left: 1px solid color-mix(in srgb, var(--port-ink) 10%, transparent); }
.port-group--wide { grid-column: 1 / -1; border-left: 0 !important; border-top: 1px solid color-mix(in srgb, var(--port-ink) 10%, transparent); }
.port-label {
  margin: 0; padding-bottom: 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--port-ink) 8%, transparent);
  font: 400 11px/1 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--port-ink);
}
.port-group p, .port-group li {
  margin: 0;
  font: 400 13px/1.55 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  color: color-mix(in srgb, var(--port-ink) 80%, transparent);
}
.port-group p + p { margin-top: 6px; }
.port-steps { margin: 0; padding: 0; list-style: none; counter-reset: step; display: grid; gap: 7px; }
.port-steps li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; align-items: baseline; }
.port-steps li::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font: 400 10px/1.6 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.08em; color: var(--port-accent);
}
.port-steps b { font-weight: 500; color: var(--port-ink); }
.port-ladder { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.port-ladder li { display: grid; grid-template-columns: max-content 1fr; gap: 10px; align-items: baseline; }
.port-ladder .port-x {
  font: 400 11px/1.6 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--port-ink);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.port-terms {
  margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px 18px;
}
.port-terms > div { display: grid; gap: 3px; padding: 8px 0; border-bottom: 1px solid color-mix(in srgb, var(--port-ink) 8%, transparent); }
.port-terms dt {
  font: 400 10px/1 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: color-mix(in srgb, var(--port-ink) 52%, transparent);
}
.port-terms dd {
  margin: 0;
  font: 400 13px/1.45 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  color: color-mix(in srgb, var(--port-ink) 90%, transparent);
}
.port-spots { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.port-spot {
  display: grid; grid-template-columns: 30px 1fr; gap: 10px; align-items: center;
  padding: 9px 10px;
  border: 1px solid color-mix(in srgb, var(--port-ink) 16%, transparent);
  border-radius: 2px; text-decoration: none; color: inherit; min-width: 0;
  transition: border-color 0.2s, background 0.2s;
}
.port-spot:hover, .port-spot:focus-visible {
  border-color: color-mix(in srgb, var(--port-ink) 48%, transparent);
  background: color-mix(in srgb, var(--port-ink) 6%, transparent); outline: none;
}
.port-spot img { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; display: block; background: #1a1a1a; }
.port-spot__name {
  display: block; font: 500 12px/1.25 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  color: var(--port-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.port-spot__pair {
  display: block; margin-top: 3px;
  font: 400 9.5px/1 var(--font-display, "DM Mono", ui-monospace, monospace);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: color-mix(in srgb, var(--port-ink) 52%, transparent); white-space: nowrap;
}
.port-panel__foot {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  padding: 12px 18px 16px;
  border-top: 1px solid color-mix(in srgb, var(--port-ink) 12%, transparent);
}
.port-chip {
  appearance: none; cursor: pointer; text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--port-ink) 32%, transparent);
  border-radius: 2px; background: 0 0;
  padding: 9px 13px;
  color: color-mix(in srgb, var(--port-ink) 78%, transparent);
  font: 400 11px/1 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.port-chip:hover, .port-chip:focus-visible {
  color: var(--port-ink); border-color: color-mix(in srgb, var(--port-ink) 56%, transparent); outline: none;
}
.port-chip--primary { border-color: var(--port-ink); color: var(--port-ink); }
.port-chip--primary:hover, .port-chip--primary:focus-visible { background: var(--port-accent); border-color: var(--port-accent); }
.port-panel__foot .port-chip--x { margin-left: auto; }

@media (width <= 900px) {
  .port-spots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .port-terms { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (width <= 760px) {
  .port-panel { width: calc(100vw - 20px); max-height: calc(100dvh - 20px); }
  .port-grid { grid-template-columns: 1fr; }
  .port-group + .port-group { border-left: 0; border-top: 1px solid color-mix(in srgb, var(--port-ink) 10%, transparent); }
  .port-panel__head { grid-template-columns: auto 1fr auto; }
  .port-panel__index { display: none; }
  .port-panel__lede { font-size: 14px; }
  .port-terms { grid-template-columns: 1fr; }
  .port-panel__foot .port-chip--x { margin-left: 0; }
}

/* ── Poster fallback ───────────────────────────────────────────────────── */
#fallback {
  display: none; position: fixed; inset: 0; z-index: var(--port-z-fallback);
  padding: 0; background: var(--port-bg); color: var(--port-ink);
  flex-direction: column; align-items: stretch; justify-content: flex-end; text-align: left;
  overflow: hidden;
}
html.port-fallback #fallback { display: flex; }
.fallback__poster {
  position: absolute; inset: -4%; width: 108%; height: 108%;
  object-fit: cover; object-position: 50% 62%;
  animation: port-drift 48s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes port-drift {
  from { transform: scale(1) translate(0, 0); }
  to { transform: scale(1.06) translate(-1.2%, -1.4%); }
}
.fallback__veil {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, #0c0c0c59 0%, #0c0c0c00 32%, #0c0c0c00 68%, #0c0c0cb8 100%);
}
.fallback__note {
  position: absolute; left: 50%; bottom: clamp(20px, 5vh, 48px);
  transform: translateX(-50%);
  width: min(600px, calc(100vw - 32px));
  display: grid; grid-template-columns: auto 1fr auto; gap: 12px 14px; align-items: center;
  padding: 12px 12px 12px 16px;
  border: 1px solid color-mix(in srgb, var(--port-ink) 18%, transparent);
  border-radius: 8px;
}
.fallback__note p {
  position: relative; z-index: 1; margin: 0;
  font: 400 12px/1.55 var(--font-body, "IBM Plex Sans", system-ui, sans-serif);
  color: color-mix(in srgb, var(--port-ink) 86%, transparent);
}
.fallback__dot { position: relative; z-index: 1; width: 8px; height: 8px; background: var(--port-accent); display: block; }
.fallback__retry { position: relative; z-index: 1; }
/* the scene's title/credit sit at z 88 — lift them above the poster layer */
html.port-fallback .title,
html.port-fallback .site-credit { opacity: 1; filter: none; transform: none; z-index: calc(var(--port-z-fallback) + 20); }
@media (width <= 640px) {
  .fallback__note { grid-template-columns: auto 1fr; }
  .fallback__retry { grid-column: 1 / -1; justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
  .fallback__poster { animation: none; }
}

/* ── $PORT contract in the About panel (filled from /api/ca) ───────────── */
.port-ca { appearance: none; background: 0 0; border: 0; padding: 0; color: inherit; font: inherit; cursor: pointer; text-align: left; word-break: break-all; }
.port-ca[data-ca=""] { cursor: default; }
.port-ca[data-ca]:not([data-ca=""]):hover { color: var(--port-ink); text-decoration: underline; text-underline-offset: 3px; }