@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Rajdhani:wght@500;600;700&display=swap');

/* ============================================================
   NET TRACE — terminal-chrome UI + reactive layout
   Palette mirrors the locked board mockup.
   ============================================================ */
:root{
  --nt-bg:#030b14; --nt-panel:#060f1c; --nt-panel2:#08192b; --nt-border:#0a2a4a;
  --nt-cyan:#00e5ff; --nt-cyan-soft:#4df3ff; --nt-green:#00ff88; --nt-orange:#ff6b35;
  --nt-red:#ff2d55; --nt-violet:#7a3cff; --nt-lime:#c9ff2e; --nt-gold:#ffd447;
  --nt-text:#c8e6ff; --nt-dim:#4a7fa8; --nt-wire:#28577d; --nt-wire-hi:#3f7bad;
}
*{ box-sizing:border-box; }

body{
  background:radial-gradient(ellipse at 50% -10%, #06182b 0%, var(--nt-bg) 55%, #01060c 100%) !important;
  font-family:'Rajdhani',sans-serif;
  color:var(--nt-text);
  min-height:100vh;
  overflow-x:hidden;
}
.main.container.container-fluid{
  display:flex; flex-direction:column; align-items:center; justify-content:flex-start;
  min-height:100vh; padding:18px 14px 28px;
}
.nt-root{ width:100%; display:flex; flex-direction:column; align-items:center; gap:16px; }

/* ---- terminal window ---- */
.terminal{
  width:min(97vw,1180px);
  height:min(84vh,760px);
  display:flex; flex-direction:column;
  border:1px solid var(--nt-border); border-radius:12px; overflow:hidden;
  background:linear-gradient(160deg,#08192b 0%,var(--nt-panel) 55%,#030a13 100%);
  box-shadow:0 0 0 1px rgba(0,229,255,.06) inset, 0 0 50px rgba(0,229,255,.08),
    0 30px 70px rgba(0,0,0,.7);
}

.titlebar{
  display:flex; align-items:center; gap:12px; padding:7px 14px;
  background:linear-gradient(180deg,#12331a,#0a220f);
  border-bottom:1px solid rgba(201,255,46,.35);
  flex-shrink:0;
}
.tb-dots{ display:flex; gap:7px; }
.tb-dots i{ width:11px; height:11px; border-radius:50%; display:block; }
.tb-dots i:nth-child(1){ background:#ff5f57; }
.tb-dots i:nth-child(2){ background:#febc2e; }
.tb-dots i:nth-child(3){ background:#28c840; }
.tb-title{ font-family:'Share Tech Mono',monospace; letter-spacing:3px; font-size:14px;
  color:var(--nt-lime); text-shadow:0 0 10px rgba(201,255,46,.4); }
.tb-sub{ font-family:'Share Tech Mono',monospace; font-size:12px; color:#9fd06a; opacity:.75; letter-spacing:1px; }
.tb-spacer{ flex:1; }
.tb-glyphs{ display:flex; gap:10px; color:#9fd06a; font-family:'Share Tech Mono',monospace; font-size:15px; }
.tb-glyphs span{ cursor:pointer; }

/* NEW GAME button — injected into the shared audio-bar settings popover
   (#audioSettings) so it lives with the other options, not the title bar. */
.nt-newgame-row{ margin-top:12px; padding-top:12px; border-top:1px solid rgba(201,255,46,.18); }
.nt-newgame-btn{
  width:100%;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:'Share Tech Mono',monospace; font-size:12px; letter-spacing:1.5px;
  color:var(--nt-lime); background:rgba(201,255,46,.08);
  border:1px solid rgba(201,255,46,.45); border-radius:5px;
  padding:8px 10px; cursor:pointer; line-height:1;
  text-shadow:0 0 8px rgba(201,255,46,.35);
  transition:background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.nt-newgame-btn:hover{ background:rgba(201,255,46,.18); border-color:var(--nt-lime); box-shadow:0 0 12px rgba(201,255,46,.35); }
.nt-newgame-btn:active{ transform:translateY(1px); }
.nt-newgame-btn:focus-visible{ outline:2px solid var(--nt-lime); outline-offset:2px; }

.body{ flex:1; display:flex; min-height:0; }

/* ---- side HUD ---- */
.side{
  width:248px; flex-shrink:0; padding:14px 14px 12px;
  border-right:1px solid var(--nt-border); background:rgba(3,11,20,.5);
  display:flex; flex-direction:column; gap:13px; font-family:'Share Tech Mono',monospace;
  overflow-y:auto;
}
.hud-block{ display:flex; flex-direction:column; gap:3px; }
.hud-label{ font-size:10px; letter-spacing:2px; color:var(--nt-dim); }
.hud-val{ font-size:22px; letter-spacing:1px; color:var(--nt-cyan); text-shadow:0 0 8px rgba(0,229,255,.45); }
.hud-val.green{ color:var(--nt-green); text-shadow:0 0 8px rgba(0,255,136,.45); }
.hud-val.over{ color:var(--nt-red); text-shadow:0 0 8px rgba(255,45,85,.5); }
.hud-val.timer{ color:var(--nt-orange); text-shadow:0 0 8px rgba(255,107,53,.45); }
.hud-val.timer.critical{ color:var(--nt-red); text-shadow:0 0 10px rgba(255,45,85,.7); animation:nt-flash .5s steps(1) infinite; }
.hud-val.small{ font-size:15px; color:var(--nt-text); text-shadow:none; }
.hud-rule{ height:1px; background:linear-gradient(90deg,transparent,var(--nt-border),transparent); margin:2px 0; }
#timerBlock.timer-off .hud-val.timer{ color:var(--nt-dim); text-shadow:none; }
@keyframes nt-flash{ 0%,49%{opacity:1;} 50%,100%{opacity:.3;} }

.hud-val.bump{ animation:nt-bump .5s ease-out 1; }
@keyframes nt-bump{ 0%{transform:scale(1);} 30%{transform:scale(1.28);} 100%{transform:scale(1);} }
/* LOCKS readout: orange while any lock is still sealed, green once all open */
#hudLocks{ color:var(--nt-orange); text-shadow:0 0 8px rgba(255,107,53,.45); }
#hudLocks.all{ color:var(--nt-green); text-shadow:0 0 8px rgba(0,255,136,.45); }

.legend{ display:flex; flex-direction:column; gap:8px; }
.legend-row{ display:flex; align-items:center; gap:10px; font-size:11px; letter-spacing:.5px; color:var(--nt-dim); }
.legend-row b{ color:var(--nt-text); font-weight:400; }
.lg-swatch{ width:30px; height:22px; flex-shrink:0; }

.scanlog{
  margin-top:auto; padding-top:10px; border-top:1px solid var(--nt-border);
  font-size:10.5px; line-height:1.55; color:var(--nt-dim); letter-spacing:.5px;
  max-height:120px; overflow:hidden;
}
.scanlog .ok{ color:var(--nt-green); } .scanlog .warn{ color:var(--nt-orange); }
.scanlog .bad{ color:var(--nt-red); } .scanlog .in{ color:var(--nt-cyan); }

/* ---- map column ---- */
.map-col{ flex:1; display:flex; flex-direction:column; min-width:0; }
.ruler{
  display:flex; align-items:center; gap:20px; padding:6px 14px;
  border-bottom:1px solid var(--nt-border); background:rgba(3,11,20,.4);
  font-family:'Share Tech Mono',monospace; font-size:12px; color:var(--nt-dim); letter-spacing:1px;
  flex-shrink:0; overflow:hidden; white-space:nowrap;
}
.ruler b{ color:var(--nt-cyan); font-weight:400; }
.ruler .obj{ margin-left:auto; color:var(--nt-orange); }

.stage{ position:relative; flex:1; min-height:0; overflow:hidden; background:var(--nt-bg); touch-action:none; }
#board{ position:absolute; inset:0; width:100%; height:100%; display:block; cursor:grab; }
#board.grabbing{ cursor:grabbing; }

/* ---- Glitch overlay ----
   Mirrors node-router's #glitchOverlay > .glitch-red/.glitch-cyan/.glitch-scan.
   Fired via .error-flash whenever sfx('fail') runs: a short, hard RED glitch
   across the whole board. Self-clears from JS; purely cosmetic (no input lock). */

/* ---- Procedural glitch TRANSITION canvas (exit wipe + loading reveal) ----
   A persistent full-stage canvas driven by NTTransition. Sits ABOVE the board,
   trace gate, and timer overlay so it can wipe/reveal the whole interface. It's
   display:none when idle so it never intercepts anything; NTTransition toggles
   .active while a transition plays. */
.nt-transition-glitch{
  position:absolute; inset:0; width:100%; height:100%;
  pointer-events:none; z-index:30; display:none;
}
.nt-transition-glitch.active{ display:block; }

.nt-glitch-overlay{
  position:absolute; inset:0; pointer-events:none; opacity:0; z-index:4; overflow:hidden;
}
.nt-glitch-overlay > div{
  position:absolute; inset:-12px;   /* overscan so jitter never reveals an edge */
  mix-blend-mode:difference; pointer-events:none;
}
.nt-glitch-overlay .glitch-red{
  background:repeating-linear-gradient(0deg, rgba(255,45,85,.65) 0 3px, transparent 3px 9px);
  animation:nt-glitch-shift-r 130ms steps(3) infinite;
}
.nt-glitch-overlay .glitch-cyan{
  background:repeating-linear-gradient(0deg, rgba(0,229,255,.6) 0 3px, transparent 3px 9px);
  animation:nt-glitch-shift-c 150ms steps(3) infinite;
}
.nt-glitch-overlay .glitch-scan{
  background:repeating-linear-gradient(0deg, rgba(122,60,255,.14) 0 2px, transparent 2px 5px);
  mix-blend-mode:screen;
}
.nt-glitch-overlay.error-flash{ opacity:1; animation:nt-glitch-flicker 70ms steps(2) 3; }
.nt-glitch-overlay.error-flash .glitch-red{
  background:repeating-linear-gradient(0deg, rgba(255,45,85,.9) 0 4px, transparent 4px 8px);
  animation:nt-glitch-shift-r 70ms steps(3) infinite;
}
/* keep the flash reading clearly RED, not neutral */
.nt-glitch-overlay.error-flash .glitch-cyan,
.nt-glitch-overlay.error-flash .glitch-scan{ opacity:0; }
.nt-glitch-overlay.error-flash::before{
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at center, rgba(255,45,85,.10) 0%, rgba(255,45,85,.42) 100%);
  animation:nt-error-wash 360ms ease-out 1;
}
@keyframes nt-glitch-flicker{
  0%{ clip-path:inset(0 0 0 0); }
  25%{ clip-path:inset(8% 0 62% 0); }
  50%{ clip-path:inset(58% 0 4% 0); }
  75%{ clip-path:inset(22% 0 44% 0); }
  100%{ clip-path:inset(0 0 0 0); }
}
@keyframes nt-glitch-shift-r{
  0%{ transform:translate(-14px,0); } 33%{ transform:translate(10px,-6px); }
  66%{ transform:translate(-8px,5px); } 100%{ transform:translate(12px,-4px); }
}
@keyframes nt-glitch-shift-c{
  0%{ transform:translate(14px,0); } 33%{ transform:translate(-10px,6px); }
  66%{ transform:translate(8px,-5px); } 100%{ transform:translate(-12px,4px); }
}
@keyframes nt-error-wash{ 0%{opacity:0;} 15%{opacity:1;} 100%{opacity:0;} }

/* ---- INTRUSION DETECTED alert ----
   Shown while any intrusion trace is armed. A pulsing red banner pinned to the
   top of the board so the player knows the secondary timer is running. */
.nt-intrusion-alert{
  position:absolute; left:50%; top:12px; transform:translateX(-50%);
  z-index:5; display:flex; align-items:center; gap:8px;
  padding:7px 16px; border-radius:8px;
  background:rgba(35,4,12,.86); border:1px solid var(--nt-red);
  color:#ff9bb0; font-family:'Share Tech Mono',monospace;
  font-size:13px; letter-spacing:3px; text-transform:uppercase;
  box-shadow:0 0 18px rgba(255,45,85,.5);
  animation:nt-intrusion-pulse 900ms ease-in-out infinite;
  pointer-events:none; white-space:nowrap;
}
.nt-intrusion-alert.hidden{ display:none; }
.nt-intrusion-alert-icon{ font-size:15px; color:var(--nt-red); }
@keyframes nt-intrusion-pulse{
  0%,100%{ box-shadow:0 0 12px rgba(255,45,85,.45); opacity:.92; }
  50%{ box-shadow:0 0 22px rgba(255,45,85,.85); opacity:1; }
}

/* ---- MOVE-TRACE INTRUSION overlay ----
   A partially-transparent digital-tearing overlay pinned over the whole board.
   Fired via .active-glitch from main.js triggerMoveIntrusion() when the player
   exceeds the move threshold. pointer-events:none so it never blocks the board.
   Sits above the fail-glitch (z-index 4) and the alert banner (5). */
.intrusion-overlay{
  position:absolute; inset:0; z-index:6;
  display:flex; align-items:center; justify-content:center;
  background:rgba(255,45,85,.05);
  pointer-events:none; opacity:0;
  transition:opacity .2s ease-in;
}
.intrusion-overlay.active-glitch{ opacity:1; }
.intrusion-overlay h1{
  position:relative; margin:0;
  font-family:'Share Tech Mono',monospace;
  font-size:clamp(1.6rem,7vw,3rem); font-weight:700;
  letter-spacing:4px; text-transform:uppercase;
  color:var(--nt-red);
  animation:nt-move-glitch-skew 1s infinite linear alternate-reverse;
}
.intrusion-overlay h1::before,
.intrusion-overlay h1::after{
  content:attr(data-text);
  position:absolute; top:0; left:0; width:100%; height:100%;
}
.intrusion-overlay h1::before{
  left:3px; text-shadow:-2px 0 var(--nt-cyan);
  clip-path:polygon(0 0, 100% 0, 100% 45%, 0 45%);
  animation:nt-move-glitch-anim 2s infinite linear alternate-reverse;
}
.intrusion-overlay h1::after{
  left:-3px; text-shadow:-2px 0 var(--nt-lime, #7dff9b);
  clip-path:polygon(0 80%, 100% 20%, 100% 100%, 0 100%);
  animation:nt-move-glitch-anim 2.5s infinite linear alternate-reverse;
}
@keyframes nt-move-glitch-anim{
  0%{ clip-path:inset(20% 0 80% 0); }
  20%{ clip-path:inset(60% 0 10% 0); }
  40%{ clip-path:inset(40% 0 50% 0); }
  60%{ clip-path:inset(80% 0 5% 0); }
  80%{ clip-path:inset(10% 0 70% 0); }
  100%{ clip-path:inset(30% 0 20% 0); }
}
@keyframes nt-move-glitch-skew{
  0%{ transform:skew(0deg); }
  20%{ transform:skew(-5deg); }
  40%{ transform:skew(5deg); }
  60%{ transform:skew(-2deg); }
  80%{ transform:skew(2deg); }
  100%{ transform:skew(0deg); }
}

/* ---- Timed-level trace gate (signal scramble + START TRACE) ----
   Mirrors node-router's trace gate: covers the board until the player commits,
   which reveals the board and starts the trace timer. */
.nt-trace-gate{
  position:absolute; inset:0; z-index:7;
  display:flex; align-items:center; justify-content:center;
  background:rgba(3,11,20,.55); overflow:hidden;
}
.nt-trace-gate.hidden{ display:none; }
#trace-scramble-canvas{ position:absolute; inset:0; width:100%; height:100%; display:block; }
.nt-trace-btn{
  position:relative; z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:18px 34px; border-radius:12px; cursor:pointer;
  font-family:'Share Tech Mono',monospace; color:var(--nt-bg);
  background:linear-gradient(180deg,var(--nt-cyan-soft),var(--nt-cyan));
  border:1px solid var(--nt-cyan);
  box-shadow:0 0 30px rgba(0,229,255,.6), 0 6px 20px rgba(0,0,0,.6);
  animation:nt-trace-pulse 1.4s ease-in-out infinite;
  transition:transform .06s ease;
}
.nt-trace-btn:hover{ filter:brightness(1.08); }
.nt-trace-btn:active{ transform:scale(.96); }
.nt-trace-btn-label{ font-size:22px; letter-spacing:4px; font-weight:700; }
.nt-trace-btn-sub{ font-size:11px; letter-spacing:2px; color:#05202e; opacity:.8; }
@keyframes nt-trace-pulse{
  0%,100%{ box-shadow:0 0 24px rgba(0,229,255,.5), 0 6px 20px rgba(0,0,0,.6); }
  50%{ box-shadow:0 0 44px rgba(0,229,255,.9), 0 6px 20px rgba(0,0,0,.6); }
}

/* ---- Large glitchy digital timer overlay ----
   A huge "00:XX" flashed over the board: briefly at level start, and again for
   the final 10-second countdown. Purely cosmetic (pointer-events:none). */
.nt-timer-overlay{
  position:absolute; inset:0; z-index:8; pointer-events:none;
  display:flex; align-items:center; justify-content:center;
  opacity:.55;   /* keep the board visible behind the big timer */
}
.nt-timer-overlay.hidden{ display:none; }
.nt-timer-overlay-val{
  font-family:'Share Tech Mono',monospace; font-weight:700;
  font-size:clamp(72px,20vw,190px); letter-spacing:8px; line-height:1;
  color:var(--nt-cyan-soft);
  text-shadow:0 0 24px rgba(0,229,255,.7), 0 0 60px rgba(0,229,255,.4);
  animation:nt-timer-glitch 480ms steps(2) infinite;
  position:relative;
}
/* chromatic-split ghosts for the glitch look */
.nt-timer-overlay-val::before,
.nt-timer-overlay-val::after{
  content:attr(data-val); position:absolute; left:0; top:0; width:100%; height:100%;
  display:flex; align-items:center; justify-content:center; opacity:.7;
}
.nt-timer-overlay-val::before{ color:var(--nt-red); transform:translate(-4px,2px); mix-blend-mode:screen;
  animation:nt-timer-shift-r 300ms steps(3) infinite; }
.nt-timer-overlay-val::after{ color:var(--nt-cyan); transform:translate(4px,-2px); mix-blend-mode:screen;
  animation:nt-timer-shift-c 360ms steps(3) infinite; }
/* red treatment for the final countdown */
.nt-timer-overlay.danger .nt-timer-overlay-val{
  color:#ffd0da; text-shadow:0 0 24px rgba(255,45,85,.95), 0 0 60px rgba(255,45,85,.55);
}
@keyframes nt-timer-glitch{
  0%,100%{ transform:translate(0,0); opacity:1; }
  50%{ transform:translate(2px,-1px); opacity:.86; }
}
@keyframes nt-timer-shift-r{
  0%,100%{ transform:translate(-4px,2px); }
  33%{ transform:translate(-7px,-2px); }
  66%{ transform:translate(-2px,3px); }
}
@keyframes nt-timer-shift-c{
  0%,100%{ transform:translate(4px,-2px); }
  33%{ transform:translate(7px,2px); }
  66%{ transform:translate(2px,-3px); }
}

.bg-grid{
  position:absolute; inset:0; pointer-events:none; opacity:.45;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(0,229,255,.05) 23px 24px),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(0,229,255,.05) 23px 24px);
}
.scan{
  position:absolute; inset:0; pointer-events:none; opacity:.5;
  background:repeating-linear-gradient(0deg, transparent 0 2px, rgba(0,229,255,.03) 3px, transparent 4px);
  background-size:100% 6px;
}
.reticle{ position:absolute; right:16px; bottom:14px; width:26px; height:26px; pointer-events:none; opacity:.5; }
.reticle::before,.reticle::after{ content:''; position:absolute; background:var(--nt-cyan); box-shadow:0 0 6px var(--nt-cyan); }
.reticle::before{ left:12px; top:0; width:1px; height:26px; }
.reticle::after{ top:12px; left:0; height:1px; width:26px; }
/* Gameplay hint now lives in the side panel above the legend (was absolutely
   positioned over the board). Flow it in-panel and let it wrap. */
.hint{ position:static; margin:0 0 10px; font-family:'Share Tech Mono',monospace;
  line-height:1.5;
  font-size:11px; color:var(--nt-gold); background:rgba(3,11,20,.72); padding:6px 10px; border-radius:8px;
  border:1px solid rgba(255,212,71,.4); letter-spacing:.5px; max-width:calc(100% - 28px); }
.cam{ position:absolute; left:14px; bottom:14px; display:flex; gap:8px; }
.cam button{ width:36px; height:36px; border-radius:8px; border:1px solid var(--nt-border);
  background:rgba(3,11,20,.8); color:var(--nt-cyan); font-size:17px; cursor:pointer; font-family:'Share Tech Mono',monospace; }
.cam button:hover{ border-color:var(--nt-cyan); background:rgba(0,229,255,.12); }
.tilt{ position:absolute; right:14px; top:14px; display:flex; align-items:center; gap:8px;
  font-family:'Share Tech Mono',monospace; font-size:11px; color:var(--nt-dim);
  background:rgba(3,11,20,.7); padding:6px 10px; border-radius:8px; border:1px solid var(--nt-border); }
.tilt input{ width:96px; }

/* ---- multi-board: edge directional navigation (Stage 9) ---- */
/* Diegetic pan controls on the left/right canvas edges — no top chrome. */
.nt-edge-nav{ position:absolute; top:50%; transform:translateY(-50%);
  width:42px; height:88px; z-index:4; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  font-family:'Share Tech Mono',monospace; font-size:34px; line-height:1;
  color:var(--nt-cyan); background:linear-gradient(90deg,rgba(3,11,20,.05),rgba(3,11,20,.62));
  border:1px solid var(--nt-border); border-radius:12px;
  opacity:.5; transition:opacity .15s ease, border-color .15s ease, box-shadow .15s ease; }
.nt-edge-nav:hover{ opacity:1; border-color:var(--nt-cyan); box-shadow:0 0 16px rgba(0,229,255,.35); }
.nt-edge-nav.left{ left:12px; background:linear-gradient(270deg,rgba(3,11,20,.05),rgba(3,11,20,.62)); }
.nt-edge-nav.right{ right:12px; }
.nt-edge-nav.hidden{ display:none; }
.nt-edge-nav:disabled{ opacity:.15; cursor:not-allowed; box-shadow:none; border-color:var(--nt-border); }

/* subtle board-position indicator (dots), bottom-centre */
.nt-board-indicator{ position:absolute; bottom:56px; left:50%; transform:translateX(-50%);
  display:flex; align-items:center; gap:7px; padding:5px 11px; border-radius:20px;
  background:rgba(3,11,20,.7); border:1px solid var(--nt-border); z-index:4;
  font-family:'Share Tech Mono',monospace; font-size:11px; color:var(--nt-dim); }
.nt-board-indicator.hidden{ display:none; }
.nt-board-indicator .dot{ width:9px; height:9px; border-radius:50%; background:#0a2236; border:1px solid var(--nt-border); }
.nt-board-indicator .dot.active{ background:var(--nt-cyan); border-color:var(--nt-cyan); box-shadow:0 0 8px rgba(0,229,255,.6); }
.nt-board-indicator .dot.solved{ background:var(--nt-green); border-color:var(--nt-green); }

/* ---- auto-trace status pulse (the trace fires automatically on completion) ---- */
.ab-status.tracing b{ color:var(--nt-green); animation:nt-tracepulse 1s ease-in-out infinite; }
@keyframes nt-tracepulse{ 0%,100%{opacity:1;} 50%{opacity:.55;} }

/* ---- result banner ---- */
.result-banner{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%) scale(.9);
  z-index:5; display:flex; flex-direction:column; align-items:center; gap:10px;
  padding:20px 34px; border-radius:12px; background:rgba(3,11,20,.9);
  border:1px solid var(--nt-cyan); box-shadow:0 0 34px rgba(0,229,255,.3);
  font-family:'Share Tech Mono',monospace; text-align:center;
  opacity:0; transition:opacity .3s ease, transform .3s ease; pointer-events:none;
}
.result-banner.hidden{ display:none; }
.result-banner.show{ opacity:1; transform:translate(-50%,-50%) scale(1); pointer-events:auto; }
.result-title{ font-size:26px; letter-spacing:3px; color:var(--nt-cyan); text-shadow:0 0 12px rgba(0,229,255,.5); }
.result-sub{ font-size:13px; letter-spacing:2px; color:var(--nt-text); }
/* points on their own line, in success green by default */
.result-points{ font-size:16px; letter-spacing:2px; color:var(--nt-green); text-shadow:0 0 10px rgba(0,255,136,.5); font-family:'Share Tech Mono',monospace; }

/* WIN — green treatment */
.result-banner.win{ border-color:var(--nt-green); box-shadow:0 0 34px rgba(0,255,136,.4); }
.result-banner.win .result-title{ color:var(--nt-green); text-shadow:0 0 12px rgba(0,255,136,.6); }

/* LOSE — red treatment (mirrors node-router's .result-banner.lose) */
.result-banner.lose{ border-color:var(--nt-red); box-shadow:0 0 34px rgba(255,45,85,.4); }
.result-banner.lose .result-title{ color:var(--nt-red); text-shadow:0 0 12px rgba(255,45,85,.6); }
.result-banner.lose .result-sub{ color:#ff9bb0; }
.result-banner.lose .result-points{ color:var(--nt-red); text-shadow:0 0 10px rgba(255,45,85,.5); }
/* banner Next Level button: compact height, never wraps to 2 lines */
.result-banner .nt-btn{ padding:8px 20px; white-space:nowrap; }

/* share button (ported from node-router's .nr-share) */
.nt-share{
  display:inline-flex; align-items:center; gap:8px; margin-top:2px;
  padding:7px 16px; border-radius:8px; border:1px solid var(--nt-cyan);
  background:rgba(0,229,255,.08); color:var(--nt-cyan);
  font-family:'Share Tech Mono',monospace; font-size:13px; letter-spacing:2px;
  text-decoration:none; cursor:pointer; transition:background .15s ease, transform .06s ease;
}
.nt-share:hover{ background:rgba(0,229,255,.18); }
.nt-share:active{ transform:scale(.96); }
.nt-share.hidden{ display:none; }
.nt-share img{ filter:brightness(0) saturate(100%) invert(72%) sepia(90%) saturate(1200%) hue-rotate(140deg); }

/* ---- action bar ---- */
.actionbar{ display:flex; align-items:center; gap:14px; padding:10px 14px;
  border-top:1px solid var(--nt-border); background:rgba(3,11,20,.55); flex-shrink:0; }
.ab-status{ font-family:'Share Tech Mono',monospace; font-size:12px; color:var(--nt-dim); letter-spacing:1px; overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }
.ab-status b{ color:var(--nt-green); }
.ab-spacer{ flex:1; }

.nt-btn{ font-family:'Rajdhani',sans-serif; font-weight:700; letter-spacing:1.5px; text-transform:uppercase;
  font-size:14px; padding:9px 22px; border-radius:8px; border:1px solid var(--nt-border);
  color:var(--nt-text); background:linear-gradient(180deg,#0c2237,#071626); cursor:pointer;
  transition:transform .05s ease, border-color .15s ease; }
.nt-btn:hover{ border-color:var(--nt-cyan); }
.nt-btn:active{ transform:translateY(2px); }
.nt-btn:disabled{ opacity:.4; cursor:not-allowed; border-color:var(--nt-border); color:var(--nt-dim); box-shadow:none; }
.nt-btn.primary{ color:var(--nt-bg); border-color:var(--nt-cyan);
  background:linear-gradient(180deg,var(--nt-cyan-soft),var(--nt-cyan)); box-shadow:0 3px 14px rgba(0,229,255,.4); }
.nt-btn.primary.ready{ animation:nt-ready 1.2s ease-in-out infinite; }
@keyframes nt-ready{ 0%,100%{box-shadow:0 3px 12px rgba(0,229,255,.4);} 50%{box-shadow:0 3px 20px rgba(0,229,255,.85);} }
/* DANGER — destructive action (e.g. TERMINATE SESSION / logout). Red palette. */
.nt-btn.danger{ color:#ff9bb0; border-color:var(--nt-red);
  background:linear-gradient(180deg,#2a0810,#1a040a); box-shadow:0 0 14px rgba(255,45,85,.25); }
.nt-btn.danger:hover{ border-color:var(--nt-red); color:#fff; background:linear-gradient(180deg,var(--nt-red),#c01238); }

/* Action-bar Next Level: OUTLINED (cyan border + cyan text, transparent fill)
   rather than filled — the banner's Next Level stays filled. */
.actionbar #nextBtn.primary{
  color:var(--nt-cyan);
  background:transparent;
  border-color:var(--nt-cyan);
  box-shadow:none;
}
.actionbar #nextBtn.primary:hover{ background:rgba(0,229,255,.10); }
.actionbar #nextBtn.primary:disabled{ color:var(--nt-dim); border-color:var(--nt-border); background:transparent; }
.actionbar #nextBtn.primary.ready{ animation:none; }

/* ---- access code panel ---- */
.nt-codepanel{
  width:min(97vw,1180px); padding:14px 18px; border-radius:12px;
  background:rgba(3,11,20,.6); border:1px solid var(--nt-border);
  display:flex; flex-direction:column; align-items:center; gap:10px;
}
.nt-current-code{ display:flex; flex-direction:column; align-items:center; gap:3px; }
.nt-code-label{ font-family:'Share Tech Mono',monospace; font-size:11px; letter-spacing:3px; color:var(--nt-dim); }
.nt-code-value{ font-family:'Share Tech Mono',monospace; font-size:17px; letter-spacing:3px; color:var(--nt-cyan); text-shadow:0 0 10px rgba(0,229,255,.5); }
.nt-code-form{ display:flex; gap:8px; }
.nt-code-input{ font-family:'Share Tech Mono',monospace; font-size:14px; letter-spacing:2px; text-transform:uppercase;
  color:var(--nt-cyan); background:var(--nt-bg); border:1px solid var(--nt-border); border-radius:8px;
  padding:9px 12px; width:130px; text-align:center; }
.nt-code-input:focus{ outline:2px solid var(--nt-cyan); outline-offset:1px; }
.nt-code-msg{ font-family:'Share Tech Mono',monospace; font-size:13px; letter-spacing:1px; min-height:14px; color:var(--nt-dim); }
.nt-code-msg.ok{ color:var(--nt-green); } .nt-code-msg.bad{ color:var(--nt-red); }

/* ============================================================
   REACTIVE LAYOUT
   - wide: full terminal chrome + side HUD (default)
   - compact (portrait / narrow): hide side HUD, slim chrome, map fills
   ============================================================ */
/* COMPACT: stack the body vertically. The side panel becomes a horizontal HUD
   STRIP on top (Stage/Level, Timer, Moves, Score in a row) with the legend
   tucked into a collapsible drawer, so mobile keeps all the readouts. The map
   fills the remaining height, and the terminal grows TALLER in portrait. */
.nt-root.compact .terminal{ height:min(94vh,900px); }
.nt-root.compact .tb-sub{ display:none; }
.nt-root.compact .ruler{ gap:10px; font-size:10.5px; padding:5px 10px; }
/* On mobile the hint rides with the legend drawer: hidden until the operator
   opens LEGEND, then shown above the node list. */
.nt-root.compact .side .hint{ display:none; grid-column:1 / -1; margin-top:4px; }
.nt-root.compact .side.legend-open .hint{ display:block; }

.nt-root.compact .body{ flex-direction:column; }

/* side panel -> compact top HUD, laid out as a SHORT 2-row grid:
     row 1:  STAGE·LEVEL | MOVES | SCORE
     row 2:  TRACE TIMER | (spacer) | LEGEND button
   Uses grid areas so the order is fixed regardless of DOM order. */
.nt-root.compact .side{
  width:100%; flex-shrink:0;
  border-right:none; border-bottom:1px solid var(--nt-border);
  padding:5px 10px; gap:2px 12px;
  display:grid;
  grid-template-columns:auto auto 1fr auto;
  grid-template-areas:
    "sl score score score"
    "timer moves locks legend";
  align-items:center;
  overflow:visible;
}
.nt-root.compact .side .hud-block{ display:flex; flex-direction:column; align-items:flex-start; gap:0; min-width:auto; }
.nt-root.compact .side #slBlock{ grid-area:sl; }     /* stage·level */
.nt-root.compact .side #timerBlock{ grid-area:timer; margin:0; }
.nt-root.compact .side #movesBlock{ grid-area:moves; }
.nt-root.compact .side #scoreBlock{ grid-area:score; }
.nt-root.compact .side #locksBlock{ grid-area:locks; margin:0; }
.nt-root.compact .side .hud-label{ font-size:8.5px; letter-spacing:1.5px; line-height:1.1; }
.nt-root.compact .side .hud-val{ font-size:15px; line-height:1.1; }
.nt-root.compact .side .hud-val.small{ font-size:13px; }
.nt-root.compact .side .hud-rule{ display:none; }

/* legend toggle -> bottom-right cell */
.nt-legend-toggle{ display:none; }
.nt-root.compact .nt-legend-toggle{
  grid-area:legend; justify-self:end;
  display:inline-flex; align-items:center; gap:6px;
  padding:5px 10px; border-radius:8px; border:1px solid var(--nt-border);
  background:#071626; color:var(--nt-cyan); cursor:pointer;
  font-family:'Share Tech Mono',monospace; font-size:11px; letter-spacing:1px;
}
.nt-root.compact .nt-legend-toggle:hover{ border-color:var(--nt-cyan); }

/* legend: collapsed by default; expands full-width across the grid when open.
   Scan log hidden on mobile (space). */
.nt-root.compact .side .legend{
  display:none; grid-column:1 / -1;
  margin-top:4px; padding-top:8px; border-top:1px solid var(--nt-border);
}
.nt-root.compact .side.legend-open .legend{ display:flex; }
.nt-root.compact .side .scanlog{ display:none; }

/* map fills the rest; keep the stage area tall */
.nt-root.compact .map-col{ min-height:0; }
.nt-root.compact .actionbar{ flex-wrap:wrap; gap:8px; }
.nt-root.compact .actionbar .nt-btn{ padding:8px 14px; font-size:13px; }
.nt-root.compact .nt-edge-nav{ width:34px; height:70px; font-size:26px; }

/* auto-compact fallback for small/portrait viewports (JS also toggles .compact) */
@media (max-width:820px), (orientation:portrait){
  .terminal{ height:min(94vh,900px); }
  .tb-sub{ display:none; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
}

/* ============================================================
   HYBRID TUTORIAL ENGINE — "System Intercepts"
   (see design-files/tutorials.md)
   Two presentations share the #tutorialOverlay host:
     .tut-info-mode         Tier 2: dismissible holographic modal
     .tut-interactive-mode  Tier 1: step banner + pulsing targeting reticle
   ============================================================ */
.nt-tutorial-overlay{ position:absolute; inset:0; z-index:9; }
.nt-tutorial-overlay.hidden{ display:none; }

/* Pointer routing:
   - INTERACTIVE (Tier 1): the overlay must be CLICK-THROUGH so board taps reach
     the canvas (rotateNode -> Tut.interceptClick gates them). Only the step
     banner is interactive; the reticle stays click-through.
   - INFO (Tier 2): the overlay BLOCKS the board — its backdrop + modal capture
     input so the player can only press CONTINUE. */
.nt-tutorial-overlay.tut-interactive-mode{ pointer-events:none; }
.nt-tutorial-overlay.tut-interactive-mode .tut-step{ pointer-events:auto; }
.nt-tutorial-overlay.tut-interactive-mode .tut-reticle{ pointer-events:none; }
.nt-tutorial-overlay.tut-info-mode{ pointer-events:auto; }

/* backdrop: darkens + blocks the board while a tutorial runs */
.tut-backdrop{
  position:absolute; inset:0; background:rgba(2,7,14,.78);
  backdrop-filter:blur(1px); animation:tut-fade .2s ease both;
}
@keyframes tut-fade{ from{ opacity:0; } to{ opacity:1; } }

/* ---- Tier 2: informational alert (centered terminal modal) ---- */
.tut-modal{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  width:min(88%,440px); z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:14px;
  padding:24px 28px 22px; border-radius:12px;
  background:linear-gradient(160deg,#08192b 0%,var(--nt-panel) 60%,#030a13 100%);
  border:1px solid var(--nt-cyan);
  box-shadow:0 0 40px rgba(0,229,255,.35), 0 20px 60px rgba(0,0,0,.7),
    0 0 0 1px rgba(0,229,255,.08) inset;
  font-family:'Share Tech Mono',monospace; text-align:center;
  animation:tut-modal-in .28s cubic-bezier(.2,.9,.3,1) both;
}
@keyframes tut-modal-in{
  from{ opacity:0; transform:translate(-50%,-46%) scale(.94); }
  to{ opacity:1; transform:translate(-50%,-50%) scale(1); }
}
.tut-modal-head{
  display:flex; align-items:center; gap:12px;
  font-size:13px; letter-spacing:5px; color:var(--nt-cyan);
  text-shadow:0 0 12px rgba(0,229,255,.6);
}
.tut-glyph{ color:var(--nt-cyan-soft); animation:tut-glyph-pulse 1.6s ease-in-out infinite; }
@keyframes tut-glyph-pulse{ 0%,100%{ opacity:.5; } 50%{ opacity:1; } }
.tut-modal-tag{
  font-size:18px; letter-spacing:3px; font-weight:700; color:var(--nt-lime);
  text-shadow:0 0 12px rgba(201,255,46,.4);
}
.tut-modal-body{
  font-size:13px; line-height:1.55; letter-spacing:.4px; color:var(--nt-text);
  max-width:44ch;
}
.tut-modal-count{ font-size:11px; letter-spacing:2px; color:var(--nt-dim); }
.tut-continue{ margin-top:4px; font-family:'Share Tech Mono',monospace; }

/* ---- Tier 1: interactive step banner (bottom-centred) ---- */
.tut-step{
  position:absolute; left:50%; bottom:22px; transform:translateX(-50%);
  z-index:2; width:min(92%,520px);
  display:flex; flex-direction:column; gap:10px;
  padding:16px 20px; border-radius:12px;
  background:rgba(3,11,20,.94); border:1px solid var(--nt-cyan);
  box-shadow:0 0 30px rgba(0,229,255,.3), 0 12px 40px rgba(0,0,0,.6);
  font-family:'Share Tech Mono',monospace;
  animation:tut-step-in .25s ease both;
}
@keyframes tut-step-in{ from{ opacity:0; transform:translate(-50%,10px); } to{ opacity:1; transform:translate(-50%,0); } }
.tut-step-head{ font-size:12px; letter-spacing:4px; color:var(--nt-lime);
  text-shadow:0 0 10px rgba(201,255,46,.4); }
.tut-step-text{ font-size:14px; line-height:1.5; letter-spacing:.4px; color:var(--nt-text); }
.tut-step-foot{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.tut-step-count{ font-size:11px; letter-spacing:2px; color:var(--nt-dim); }
.tut-next{ font-family:'Share Tech Mono',monospace; padding:7px 18px; }
.tut-next.hidden{ display:none; }

/* ---- pulsing targeting reticle over the highlighted node ---- */
.tut-reticle{
  position:absolute; z-index:3; pointer-events:none;
  border-radius:6px; animation:tut-reticle-pulse 1s ease-in-out infinite;
}
.tut-reticle.hidden{ display:none; }
/* corner brackets [ ] drawn with border segments on ::before/::after + the box */
.tut-reticle::before, .tut-reticle::after{
  content:''; position:absolute; width:16px; height:16px; pointer-events:none;
  border-color:var(--nt-cyan); border-style:solid;
  box-shadow:0 0 8px rgba(0,229,255,.7);
}
.tut-reticle::before{ left:-4px; top:-4px; border-width:3px 0 0 3px; }
.tut-reticle::after{ right:-4px; bottom:-4px; border-width:0 3px 3px 0; }
/* the box itself carries the other two corners via its own border image trick:
   use a subtle full outline plus the bracket pseudo-elements above. */
.tut-reticle{ outline:1px dashed rgba(0,229,255,.5); outline-offset:2px; }
@keyframes tut-reticle-pulse{
  0%,100%{ box-shadow:0 0 0 rgba(0,229,255,0); transform:scale(1); }
  50%{ box-shadow:0 0 22px rgba(0,229,255,.5); transform:scale(1.06); }
}

/* =====================================================================
   FIRST-VISIT SPLASH — CRT / glitch boot terminal
   Shown once per browser session (see main.js sessionStorage gate).
   ===================================================================== */
.nt-splash {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at center, rgba(6, 22, 18, 0.92) 0%, rgba(2, 6, 8, 0.98) 70%, #010304 100%);
  color: #00ff88;
  font-family: "Share Tech Mono", "Courier New", monospace;
  overflow: hidden;
  opacity: 1;
  transition: opacity 0.6s ease;
}
.nt-splash.hidden { display: none; }
/* Fade-out state toggled by JS before removal. */
.nt-splash.nt-splash-out { opacity: 0; pointer-events: none; }

/* Scanline overlay — thin repeating dark bands over the whole screen. */
.nt-splash-scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.28) 3px,
    rgba(0, 0, 0, 0.28) 4px
  );
  animation: nt-splash-scan 8s linear infinite;
}
@keyframes nt-splash-scan {
  0%   { background-position: 0 0; }
  100% { background-position: 0 100px; }
}

/* Subtle CRT flicker + a slow moving bright scan bar. */
.nt-splash-flicker {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  background: linear-gradient(rgba(0, 255, 136, 0.03), rgba(0, 255, 136, 0.03));
  animation: nt-splash-flicker 3.2s steps(60) infinite;
  mix-blend-mode: screen;
}
.nt-splash-flicker::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 14%;
  top: -14%;
  background: linear-gradient(rgba(0, 255, 136, 0), rgba(0, 255, 136, 0.06), rgba(0, 255, 136, 0));
  animation: nt-splash-scanbar 6s linear infinite;
}
@keyframes nt-splash-flicker {
  0%   { opacity: 0.10; }
  10%  { opacity: 0.16; }
  20%  { opacity: 0.08; }
  30%  { opacity: 0.20; }
  45%  { opacity: 0.10; }
  60%  { opacity: 0.22; }
  75%  { opacity: 0.09; }
  90%  { opacity: 0.18; }
  100% { opacity: 0.12; }
}
@keyframes nt-splash-scanbar {
  0%   { top: -14%; }
  100% { top: 114%; }
}

@media (prefers-reduced-motion: reduce) {
  .nt-splash-scanlines,
  .nt-splash-flicker,
  .nt-splash-flicker::after { animation: none; }
  .nt-splash-title { animation: none; }
  .nt-splash-title::before,
  .nt-splash-title::after { display: none; }
}

.nt-splash-inner {
  position: relative;
  z-index: 4;
  width: min(680px, 90vw);
  max-height: 92vh;
  overflow: auto;
  padding: 28px 30px 24px;
  border: 1px solid rgba(0, 255, 136, 0.35);
  border-radius: 6px;
  background: rgba(3, 12, 10, 0.55);
  box-shadow:
    0 0 24px rgba(0, 255, 136, 0.18),
    inset 0 0 40px rgba(0, 255, 136, 0.05);
  text-shadow: 0 0 6px rgba(0, 255, 136, 0.5);
}

/* ---- glitch title ---- */
.nt-splash-header { margin-bottom: 22px; }
.nt-splash-title {
  position: relative;
  margin: 0;
  font-size: clamp(28px, 6vw, 54px);
  letter-spacing: 6px;
  color: #baffd9;
  text-shadow: 0 0 10px rgba(0, 255, 136, 0.7);
  animation: nt-splash-titleflicker 4s infinite;
}
.nt-splash-title::before,
.nt-splash-title::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  overflow: hidden;
}
.nt-splash-title::before {
  color: #00e5ff;
  clip-path: inset(0 0 55% 0);
  animation: nt-splash-glitch-a 2.4s infinite steps(2, jump-none);
}
.nt-splash-title::after {
  color: #ff2d55;
  clip-path: inset(55% 0 0 0);
  animation: nt-splash-glitch-b 3.1s infinite steps(2, jump-none);
}
@keyframes nt-splash-glitch-a {
  0%, 92%, 100% { transform: translate(0, 0); opacity: 0.85; }
  93% { transform: translate(-3px, -1px); }
  96% { transform: translate(2px, 1px); }
}
@keyframes nt-splash-glitch-b {
  0%, 90%, 100% { transform: translate(0, 0); opacity: 0.85; }
  91% { transform: translate(3px, 1px); }
  95% { transform: translate(-2px, -1px); }
}
@keyframes nt-splash-titleflicker {
  0%, 100% { opacity: 1; }
  97% { opacity: 1; }
  98% { opacity: 0.6; }
  99% { opacity: 1; }
}
.nt-splash-subtitle {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 2px;
  color: #4a7fa8;
  text-shadow: 0 0 5px rgba(74, 127, 168, 0.5);
}

/* ---- stats panel (typewriter reveal) ---- */
.nt-splash-stats {
  border-top: 1px dashed rgba(0, 255, 136, 0.25);
  border-bottom: 1px dashed rgba(0, 255, 136, 0.25);
  padding: 16px 0;
  margin-bottom: 20px;
}
.nt-splash-line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
  line-height: 2;
  white-space: nowrap;
  overflow: hidden;
}
/* Each line is hidden until JS reveals it (adds .revealed) with a typewriter
   width animation. Prefix a caret-style prompt for terminal feel. */
.nt-splash-line { opacity: 0; }
.nt-splash-line.revealed {
  opacity: 1;
  animation: nt-splash-type 0.5s steps(40, end) both;
}
@keyframes nt-splash-type {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0 0 0); }
}
.nt-splash-key { color: #4a7fa8; }
.nt-splash-key::before { content: "> "; color: #00ff88; }
.nt-splash-val { color: #baffd9; font-weight: 700; }

/* ---- menu ---- */
.nt-splash-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.nt-splash-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 17px;
  letter-spacing: 2px;
  color: #00ff88;
  background: transparent;
  border: 1px solid rgba(0, 255, 136, 0.28);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, box-shadow 0.12s ease, transform 0.12s ease;
  text-shadow: 0 0 5px rgba(0, 255, 136, 0.5);
}
.nt-splash-item.hidden { display: none; }
.nt-splash-item:hover { border-color: rgba(0, 255, 136, 0.6); }
/* Selected: strong terminal glow + background inversion. */
.nt-splash-item.selected {
  background: #00ff88;
  color: #021009;
  border-color: #baffd9;
  text-shadow: none;
  box-shadow: 0 0 18px rgba(0, 255, 136, 0.8), inset 0 0 10px rgba(255, 255, 255, 0.3);
  transform: translateX(4px);
}
.nt-splash-item.selected::before { content: "▸ "; }

.nt-splash-hint {
  margin-top: 18px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 2px;
  color: #4a7fa8;
  text-shadow: 0 0 4px rgba(74, 127, 168, 0.4);
}