/* twin.css — Harbour Watch 3D twin: viewport frame, CSS2D labels, properties card, chapter strip,
   HUD, and the fallback switch. Tokens per docs/superpowers/specs/2026-09-15-digital-twin-3d-model-design.md §5. */

/* ---- viewport frame ---- */
#viewport{position:relative;aspect-ratio:16/9;min-height:520px;background:var(--ground,#101010);border:1px solid var(--line,#232323);border-radius:3px;overflow:hidden;touch-action:none}
#viewport canvas{display:block}
#twin3d:focus{outline:none}
#twin3d:focus-visible #viewport{border-color:var(--line-2,#2b2b2b)}

/* ---- label layer (CSS2DRenderer) ---- */
.twin-labels{position:absolute;inset:0 auto auto 0;overflow:hidden;pointer-events:none;z-index:2}
.twin-label{
  background:#141414;border:1px solid #2b2b2b;color:#f1f1ef;
  font-family:var(--mono,"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace);font-size:10px;line-height:1;
  letter-spacing:.12em;text-transform:uppercase;padding:3px 7px;border-radius:2px;
  pointer-events:none;white-space:nowrap;user-select:none;
  transition:color .18s var(--ease,ease),border-color .18s var(--ease,ease)
}
.twin-label.is-emph{border-color:var(--accent,#a8ff64);color:var(--accent,#a8ff64);z-index:1}
.twin-label[data-type="Vessel"]{border-color:#3a3a3a}

/* ---- properties card (bottom-left; the only overlay that takes pointer events) ---- */
.twin-card{
  position:absolute;left:16px;bottom:16px;z-index:4;max-width:280px;
  background:#141414;border:1px solid #2b2b2b;border-radius:3px;padding:10px 12px 9px;
  font-family:var(--mono,"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace);font-size:12px;line-height:1.45;color:var(--ink,#f1f1ef);
  pointer-events:auto;box-shadow:0 8px 24px rgba(0,0,0,.35)
}
.twin-card-head{display:flex;align-items:baseline;gap:10px;margin-bottom:6px}
.twin-card-type{font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent,#a8ff64);flex:none}
.twin-card-name{font-weight:500;font-size:13px;letter-spacing:.01em}
.twin-card-links{color:var(--muted,#98988f);font-size:12px}
.twin-card-prov{margin-top:6px;padding-top:6px;border-top:1px solid var(--line,#232323);color:var(--dim,#6f6f68);font-size:10.5px;letter-spacing:.04em}

/* ---- chapter strip (top-left) ---- */
.twin-strip{position:absolute;top:14px;left:14px;z-index:4;display:flex;gap:6px;pointer-events:auto}
.twin-strip button{
  appearance:none;cursor:pointer;background:#141414;border:1px solid #2b2b2b;border-radius:2px;color:var(--muted,#98988f);
  font-family:var(--mono,"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace);font-size:10px;line-height:1;letter-spacing:.12em;text-transform:uppercase;
  padding:7px 10px;transition:color .15s var(--ease,ease),border-color .15s var(--ease,ease)
}
.twin-strip button:hover{color:var(--ink,#f1f1ef);border-color:#3a3a3a}
.twin-strip button:focus-visible{outline:1px solid var(--accent,#a8ff64);outline-offset:1px}
.twin-strip button.is-on{color:var(--accent,#a8ff64);border-color:var(--accent,#a8ff64)}
.twin-strip .twin-play{min-width:30px;padding:7px 8px;text-align:center;letter-spacing:0;font-size:9px}
.twin-strip .twin-play.is-paused{color:var(--accent,#a8ff64)}

/* ---- HUD (bottom-right column: plan tools · key hint · disclaimer) ---- */
.twin-hud{
  position:absolute;right:16px;bottom:14px;z-index:3;display:flex;flex-direction:column;align-items:flex-end;gap:8px;
  pointer-events:none;font-family:var(--mono,"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace);color:var(--dim,#6f6f68);text-align:right
}
.twin-hint{font-size:9.5px;letter-spacing:.14em;text-transform:uppercase}
.twin-note{font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim,#6f6f68)}
.twin-plan{display:flex;flex-direction:column;align-items:flex-end;gap:8px;margin-bottom:4px}
.twin-plan[hidden]{display:none}   /* author display:flex would otherwise defeat the hidden attribute */
.twin-north{font-size:11px;letter-spacing:.14em;color:var(--ink,#f1f1ef);background:#141414;border:1px solid #2b2b2b;border-radius:2px;padding:4px 7px}
.twin-scale{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:9.5px;letter-spacing:.12em;color:var(--muted,#98988f)}
.twin-scale i{display:block;height:0;width:0;border-bottom:2px solid var(--ink,#f1f1ef);position:relative;transition:width .12s linear}
.twin-scale i::before,.twin-scale i::after{content:"";position:absolute;bottom:0;width:2px;height:6px;background:var(--ink,#f1f1ef)}
.twin-scale i::before{left:0}
.twin-scale i::after{right:0}

@media(prefers-reduced-motion:reduce){
  .twin-label,.twin-strip button,.twin-scale i{transition:none}
}

/* ---- fallback switch (spec §8/§9): 3D section vs. illustrated chapter stages ---- */
.twin-fallback #twin3d{display:none}
html:not(.twin-fallback) .cap-row .stage{display:none}


/* ---- alert callout (console-style rows, as the homepage ontology panel) ---- */
.twin-callout{pointer-events:auto;width:320px;max-width:min(320px,70vw);background:#141414;border:1px solid #2b2b2b;border-radius:3px;color:var(--muted,#98988f);font:400 11.5px/1.45 var(--sans,system-ui);box-shadow:0 18px 50px rgba(0,0,0,.55);margin:-16px 0 0 92px;overflow:visible}
.twin-callout::before{content:"";position:absolute;left:-84px;top:15px;width:76px;height:1px;background:#ff8c82;opacity:.8}
.twin-callout::after{content:"";position:absolute;left:-88px;top:12px;width:7px;height:7px;background:#ff8c82;border-radius:1px}
.twin-callout header{display:flex;align-items:center;gap:8px;padding:9px 10px 9px 12px;border-bottom:1px solid #262626;font:500 9.5px var(--mono,monospace);letter-spacing:.16em;text-transform:uppercase;color:#f1f1ef}
.twin-callout header em{margin-left:auto;font-style:normal;color:#ff8c82}
.twin-callout-dot{width:7px;height:7px;border-radius:1px;background:#ff8c82;flex:none;animation:twin-blink .8s steps(1) infinite}
.twin-callout-x{appearance:none;border:0;background:transparent;color:#6f6f68;font:500 14px/1 var(--mono,monospace);padding:2px 4px;margin:-2px -4px -2px 4px;cursor:pointer}
.twin-callout-x:hover{color:#f1f1ef}
.twin-callout .row{display:grid;grid-template-columns:82px 1fr auto;gap:10px;align-items:start;padding:8px 12px;border-bottom:1px solid #1f1f1f}
.twin-callout .row:last-of-type{border-bottom:0}
.twin-callout .row b{font:500 9px var(--mono,monospace);letter-spacing:.12em;color:#f1f1ef;padding-top:3px}
.twin-callout .row strong{color:#f1f1ef;font-weight:700}
.twin-callout .badge{font:500 8.5px var(--mono,monospace);letter-spacing:.1em;padding:3px 7px;border-radius:1px;white-space:nowrap}
.twin-callout .badge.crit{color:#ff8c82;border:1px solid rgba(255,140,130,.35);background:rgba(255,140,130,.1)}
.twin-callout .badge.ok{color:#a8ff64;border:1px solid rgba(168,255,100,.3);background:rgba(168,255,100,.08)}
.twin-callout .badge.link{color:#98988f;border:1px solid #2c2c2c;background:rgba(241,241,239,.04)}
.twin-callout footer{padding:8px 12px;border-top:1px solid #262626;font:400 9.5px var(--mono,monospace);letter-spacing:.06em;color:#6f6f68}
@keyframes twin-blink{0%{opacity:1}50%{opacity:.15}}
@media(prefers-reduced-motion:reduce){.twin-callout-dot{animation:none}}

/* what-if tone: lime, a proposal rather than a flag; staged rows light as the ripple reaches them */
.twin-callout--what .twin-callout-dot,.twin-callout--what::before,.twin-callout--what::after{background:#a8ff64}
.twin-callout--what header em{color:#a8ff64}
.twin-callout .badge.what{color:#a8ff64;border:1px solid rgba(168,255,100,.3);background:rgba(168,255,100,.08)}
.twin-callout--staged .row{transition:opacity .35s ease}
.twin-callout--staged .row:not(.is-on){opacity:.32}
.twin-callout--ul{margin:16px 92px 0 -92px}
.twin-callout--ul::before{left:auto;right:-84px}
.twin-callout--ul::after{left:auto;right:-88px}

/* compact variant for long consequence lists: wider card, tighter rows, so seven rows fit in the frame */
.twin-callout--compact{width:360px;max-width:min(360px,72vw);font-size:11px;line-height:1.3}
.twin-callout--compact header{padding:7px 10px 7px 12px}
.twin-callout--compact .row{grid-template-columns:78px 1fr auto;gap:8px;padding:5px 12px}
.twin-callout--compact .row b{font-size:8.5px;padding-top:2px}
.twin-callout--compact .badge{font-size:8px;padding:2px 6px}
.twin-callout--compact footer{padding:6px 12px;font-size:9px}

/* the compact card hangs 48px higher so seven rows clear the frame; the leader meets the beacon at the new offset */
.twin-callout--compact{margin:-64px 0 0 92px}
.twin-callout--compact::before{top:63px}
.twin-callout--compact::after{top:60px}

/* CSS2DRenderer assigns each label an inline z-index by camera distance every frame; an alert callout must
   always sit above the label layer, so its z-index is declared !important (author !important beats inline). */
.twin-callout{z-index:10000!important}