/* ==========================================================================
   Night Shift: Containment
   Visual system: after-hours facility. Deep emerald building shell, amber
   emergency lighting, blueprint linework, signage typography.
   Rebrand from the tokens below only.
   ========================================================================== */

:root{
  --ink:        #061714;   /* building shell, darkest */
  --panel:      #0C2A24;   /* wall panels */
  --panel-2:    #113830;   /* raised surfaces */
  --edge:       #1E4C41;   /* hairline / blueprint linework */
  --amber:      #E8A33D;   /* emergency lighting, primary action */
  --amber-dim:  #8A6320;
  --signal:     #35C79A;   /* contained / correct */
  --alert:      #E4573D;   /* breach / incorrect */
  --paper:      #E7F0EB;   /* primary text */
  --muted:      #8DA79D;   /* secondary text */

  --sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --sign: "Bahnschrift", "DIN Alternate", "Oswald", "Trebuchet MS", var(--sans);
  --mono: "Cascadia Mono", "Consolas", "SF Mono", "DejaVu Sans Mono", monospace;

  --r: 3px;                /* corners stay architectural, not SaaS-round */
  --gut: 20px;
}

*{ box-sizing:border-box; }

html,body{ height:100%; }
body{
  margin:0;
  background:
    radial-gradient(1200px 620px at 50% -10%, #10352C 0%, transparent 65%),
    var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

.shell{
  min-height:100%;
  display:flex;
  flex-direction:column;
  max-width:1180px;
  margin:0 auto;
  padding:0 var(--gut) 28px;
}

/* ---------- signage top bar ---------- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 0 12px;
  border-bottom:1px solid var(--edge);
  flex-wrap:wrap;
}
.sign{ display:flex; align-items:center; gap:10px; }
.sign-mark{
  width:14px; height:26px; flex:none;
  background:linear-gradient(180deg,var(--amber),#B87A22);
  box-shadow:0 0 18px rgba(232,163,61,.45);
  clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);
}
.sign-text b{
  display:block; font-family:var(--sign); font-size:19px;
  letter-spacing:.08em; text-transform:uppercase; font-weight:600;
}
.sign-text span{ display:block; font-size:12.5px; color:var(--muted); }

.clock{ text-align:center; }
.clock-label{ display:block; font-size:11px; color:var(--muted); letter-spacing:.06em; }
.clock-value{
  display:block; font-family:var(--mono); font-size:30px; font-weight:700;
  letter-spacing:.04em; color:var(--amber); font-variant-numeric:tabular-nums;
}
.clock.is-critical .clock-value{ color:var(--alert); animation:pulse 1s steps(2) infinite; }
.clock.is-relaxed .clock-value{ color:var(--muted); font-size:20px; }
@keyframes pulse{ 50%{ opacity:.35; } }

.topbar-actions{ display:flex; gap:8px; }

/* ---------- breach meter ---------- */
.breach{ display:flex; align-items:center; gap:12px; padding:10px 0 0; }
.breach-bar{
  flex:1; height:6px; background:var(--panel); border:1px solid var(--edge);
  overflow:hidden;
}
.breach-fill{
  display:block; height:100%; width:0%;
  background:repeating-linear-gradient(90deg,var(--alert) 0 8px,#A33322 8px 14px);
  transition:width .6s linear;
}
.breach-label{ font-family:var(--mono); font-size:11.5px; color:var(--muted); white-space:nowrap; }

/* ---------- stage ---------- */
.stage{ flex:1; padding:22px 0 8px; outline:none; }
.stage:focus-visible{ outline:2px solid var(--amber); outline-offset:6px; }

h1,h2,h3{ font-family:var(--sign); font-weight:600; letter-spacing:.02em; margin:0 0 .4em; }
h1{ font-size:clamp(30px,5.2vw,50px); line-height:1.02; letter-spacing:.01em; }
h2{ font-size:24px; }
h3{ font-size:17px; }
p{ margin:0 0 1em; max-width:66ch; }
.muted{ color:var(--muted); }

/* ---------- buttons ---------- */
.btn{
  font-family:var(--sign); font-size:14px; letter-spacing:.06em; text-transform:uppercase;
  background:var(--amber); color:#1A1004; border:1px solid var(--amber);
  padding:11px 20px; border-radius:var(--r); cursor:pointer; font-weight:600;
}
.btn:hover{ background:#F2B457; }
.btn:disabled{ opacity:.4; cursor:not-allowed; }
.btn-quiet{
  background:transparent; color:var(--paper); border-color:var(--edge);
  text-transform:none; letter-spacing:.01em; font-family:var(--sans); font-size:13px;
  padding:8px 14px;
}
.btn-quiet:hover{ background:var(--panel); }
.btn-ghost{ background:transparent; color:var(--amber); border-color:var(--amber-dim); }
.btn-ghost:hover{ background:rgba(232,163,61,.1); }
:focus-visible{ outline:2px solid var(--amber); outline-offset:3px; }

/* ---------- briefing ---------- */
.brief{ display:grid; grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr); gap:38px; align-items:center; }
.brief-kicker{
  font-family:var(--mono); font-size:12.5px; color:var(--amber);
  border-left:2px solid var(--amber); padding-left:10px; margin-bottom:18px;
}
.brief-lede{ font-size:17.5px; }
.brief-facts{ list-style:none; margin:22px 0 26px; padding:0; border-top:1px solid var(--edge); }
.brief-facts li{
  display:flex; gap:14px; padding:10px 0; border-bottom:1px solid var(--edge); font-size:14.5px;
}
.brief-facts b{ font-family:var(--mono); color:var(--amber); flex:none; width:82px; font-weight:400; }
.mode{ display:flex; gap:10px; align-items:center; margin:0 0 22px; flex-wrap:wrap; }
.mode-opt{
  border:1px solid var(--edge); background:var(--panel); padding:9px 14px;
  border-radius:var(--r); cursor:pointer; font-size:13.5px; color:var(--paper);
  font-family:var(--sans);
}
.mode-opt[aria-pressed="true"]{ border-color:var(--amber); color:var(--amber); background:rgba(232,163,61,.08); }

/* ---------- floorplan hub ---------- */
.plan-wrap{ display:grid; grid-template-columns:minmax(0,1fr) 260px; gap:26px; align-items:start; }
.plan{ width:100%; height:auto; display:block; background:var(--panel); border:1px solid var(--edge); }
.plan .room{ fill:#0A231E; stroke:var(--edge); stroke-width:1.5; }
.plan .wall{ fill:none; stroke:#2A6355; stroke-width:3; }
.plan .grid{ stroke:#123029; stroke-width:.6; }
.plan .rm-label{ font-family:var(--sign); font-size:11px; letter-spacing:.14em; fill:#5E8478; text-transform:uppercase; }
.plan .station{ cursor:pointer; }
.plan .station .disc{ fill:var(--panel-2); stroke:var(--amber); stroke-width:2; }
.plan .station .halo{ fill:var(--amber); opacity:.12; }
.plan .station .num{ font-family:var(--mono); font-size:15px; fill:var(--amber); text-anchor:middle; font-weight:700; }
.plan .station .cap{ font-family:var(--sans); font-size:11.5px; fill:var(--paper); text-anchor:middle; }
.plan .station:hover .disc,
.plan .station:focus .disc{ fill:#1A4A3E; }
.plan .station:focus{ outline:none; }
.plan .station:focus .halo{ opacity:.3; }
.plan .station.solved .disc{ stroke:var(--signal); }
.plan .station.solved .num{ fill:var(--signal); }
.plan .station.solved .halo{ fill:var(--signal); opacity:.18; }
.plan .exit .disc{ stroke:#43705F; }
.plan .exit .num{ fill:#7FA294; }
.plan .exit.ready .disc{ stroke:var(--signal); }
.plan .exit.ready .num{ fill:var(--signal); }
@media (prefers-reduced-motion:no-preference){
  .plan .station:not(.solved) .halo{ animation:beat 2.6s ease-in-out infinite; }
}
@keyframes beat{ 50%{ opacity:.26; transform:scale(1.06); transform-origin:center; } }

.plan-side h3{ margin-top:0; }
.roster{ list-style:none; margin:0; padding:0; }
.roster li{
  display:flex; gap:10px; align-items:baseline; padding:9px 0;
  border-bottom:1px solid var(--edge); font-size:13.5px;
}
.roster .dot{ width:8px; height:8px; flex:none; border-radius:50%; background:var(--amber-dim); margin-top:6px; }
.roster .done .dot{ background:var(--signal); }
.roster .done span{ color:var(--muted); text-decoration:line-through; }

/* ---------- room panels ---------- */
.room-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:18px; margin-bottom:16px; flex-wrap:wrap; }
.room-head .tag{
  font-family:var(--mono); font-size:12px; color:var(--amber); display:block; margin-bottom:2px;
}
.panel{
  background:var(--panel); border:1px solid var(--edge); border-radius:var(--r);
  padding:20px;
}
.panel + .panel{ margin-top:16px; }
.split{ display:grid; grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr); gap:18px; align-items:start; }

.prompt{ font-size:15px; margin-bottom:14px; }
.hintbox{ background:var(--panel-2); border-left:3px solid var(--amber); padding:12px 14px; font-size:14px; margin:14px 0 0; }

/* email mock (room 1) */
.mail{ background:#F4F7F5; color:#17241F; border-radius:var(--r); overflow:hidden; }
.mail-head{ padding:14px 16px; border-bottom:1px solid #CBD8D2; font-size:13.5px; }
.mail-row{ display:flex; gap:8px; padding:2px 0; }
.mail-row b{ width:64px; flex:none; color:#5C6E67; font-weight:600; }
.mail-body{ padding:16px; font-size:14.5px; line-height:1.62; }
.mail-body p{ max-width:none; }
.mail-att{ display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border:1px solid #CBD8D2; background:#E9EFEC; font-family:var(--mono); font-size:13px; }
.hot{
  background:transparent; border:1px dashed transparent; border-radius:2px;
  cursor:pointer; padding:1px 3px; font:inherit; color:inherit; text-align:left;
}
.hot:hover{ border-color:#8FA79D; background:#E6ECE9; }
.hot.found{ background:#FCE6C4; border:1px solid #C98A1F; }
.hot.wrong{ background:#F6D5CE; border:1px solid #C0503A; }
.mail .link{ color:#1B5FA8; text-decoration:underline; }
.urlbar{
  font-family:var(--mono); font-size:12.5px; background:#17241F; color:#CFE0D8;
  padding:6px 12px; min-height:29px;
}

/* checklist / found list */
.found-list{ list-style:none; margin:0; padding:0; font-size:13.5px; }
.found-list li{ padding:8px 0; border-bottom:1px solid var(--edge); color:var(--muted); }
.found-list li.on{ color:var(--paper); }
.found-list li.on::before{ content:"\2713 "; color:var(--signal); font-weight:700; }
.found-list li:not(.on)::before{ content:"\2022 "; color:var(--amber-dim); }

/* tiles (room 2) */
.tiles{ display:flex; flex-wrap:wrap; gap:8px; margin:12px 0 4px; }
.tile{
  font-family:var(--mono); font-size:14px; padding:9px 13px; cursor:pointer;
  background:var(--panel-2); color:var(--paper); border:1px solid var(--edge); border-radius:var(--r);
}
.tile:hover{ border-color:var(--amber); }
.tile[aria-pressed="true"]{ background:rgba(232,163,61,.14); border-color:var(--amber); color:var(--amber); }
.tile:disabled{ opacity:.35; cursor:not-allowed; }
.pass-preview{
  font-family:var(--mono); font-size:19px; background:#04120F; border:1px solid var(--edge);
  padding:14px 16px; min-height:54px; word-break:break-all; letter-spacing:.02em;
}
.meter{ height:10px; background:var(--panel-2); border:1px solid var(--edge); margin:12px 0 6px; }
.meter span{ display:block; height:100%; width:0; background:var(--alert); transition:width .35s ease, background .35s ease; }
.meter.ok span{ background:var(--signal); }
.meter.mid span{ background:var(--amber); }
.meter-note{ font-size:13px; color:var(--muted); }

/* dialogue (room 3) */
.log{ max-height:290px; overflow:auto; padding-right:6px; }
.line{ display:flex; gap:10px; padding:8px 0; font-size:14.5px; border-bottom:1px solid rgba(30,76,65,.5); }
.line .who{ font-family:var(--mono); font-size:12px; color:var(--muted); flex:none; width:74px; padding-top:3px; }
.line.you .who{ color:var(--signal); }
.line.caller .who{ color:var(--alert); }
.choices{ display:grid; gap:8px; margin-top:14px; }
.choice{
  text-align:left; background:var(--panel-2); border:1px solid var(--edge); color:var(--paper);
  padding:12px 14px; border-radius:var(--r); cursor:pointer; font:inherit; font-size:14.5px;
}
.choice:hover{ border-color:var(--amber); }
.choice.picked-bad{ border-color:var(--alert); background:rgba(228,87,61,.12); }
.choice.picked-good{ border-color:var(--signal); background:rgba(53,199,154,.12); }

/* sorting (room 4) */
.bins{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:14px; }
.bin{ background:var(--panel-2); border:1px dashed var(--edge); border-radius:var(--r); padding:12px; min-height:132px; }
.bin h4{ font-family:var(--sign); font-size:13px; letter-spacing:.08em; text-transform:uppercase; margin:0 0 4px; }
.bin p{ font-size:12px; color:var(--muted); margin:0 0 10px; }
.bin.armed{ border-color:var(--amber); border-style:solid; }
.bin .btn-quiet{ width:100%; }
.chip{
  display:block; width:100%; text-align:left; font-size:13.5px; padding:8px 10px; margin-bottom:6px;
  background:var(--panel); border:1px solid var(--edge); color:var(--paper); border-radius:var(--r); cursor:pointer;
}
.chip[aria-pressed="true"]{ border-color:var(--amber); color:var(--amber); }
.chip.right{ border-color:var(--signal); }
.chip.wrong{ border-color:var(--alert); }

/* sequencing (room 5) */
.seq{ display:grid; gap:8px; }
.seq-item{
  display:flex; gap:12px; align-items:center; text-align:left;
  background:var(--panel-2); border:1px solid var(--edge); color:var(--paper);
  padding:12px 14px; border-radius:var(--r); cursor:pointer; font:inherit; font-size:14.5px;
}
.seq-item .idx{
  font-family:var(--mono); width:26px; height:26px; flex:none; display:grid; place-items:center;
  border:1px solid var(--edge); color:var(--muted); font-size:13px;
}
.seq-item.chosen .idx{ border-color:var(--amber); color:var(--amber); }
.seq-item.chosen{ opacity:.55; }

/* keypad (exit) */
.keypad{ display:grid; grid-template-columns:repeat(3,64px); gap:8px; justify-content:center; margin:16px auto; }
.key{
  font-family:var(--mono); font-size:19px; padding:14px 0; background:var(--panel-2);
  border:1px solid var(--edge); color:var(--paper); border-radius:var(--r); cursor:pointer;
}
.key:hover{ border-color:var(--amber); }
.readout{
  font-family:var(--mono); font-size:30px; letter-spacing:.42em; text-align:center;
  background:#04120F; border:1px solid var(--edge); padding:14px 10px 14px 22px; color:var(--amber);
  min-height:62px;
}

/* evidence footer */
.evidence{
  display:flex; align-items:center; gap:14px; padding:12px 0 0;
  border-top:1px solid var(--edge); flex-wrap:wrap;
}
.evidence-label{ font-size:12px; color:var(--muted); }
.slots{ display:flex; gap:8px; list-style:none; margin:0; padding:0; }
.slots li{
  width:38px; height:44px; display:grid; place-items:center;
  border:1px solid var(--edge); background:var(--panel);
  font-family:var(--mono); font-size:20px; color:var(--muted);
}
.slots li.filled{ border-color:var(--amber); color:var(--amber); background:rgba(232,163,61,.08); }
.score-chip{ margin-left:auto; font-family:var(--mono); font-size:13px; color:var(--signal); }

/* debrief */
.result-head{ display:flex; align-items:baseline; gap:16px; flex-wrap:wrap; margin-bottom:8px; }
.big-score{ font-family:var(--mono); font-size:56px; color:var(--amber); line-height:1; }
.table{ width:100%; border-collapse:collapse; font-size:14px; margin-top:10px; }
.table th,.table td{ text-align:left; padding:10px 8px; border-bottom:1px solid var(--edge); }
.table th{ font-family:var(--sign); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); font-weight:600; }
.table td.n{ font-family:var(--mono); }
.verdict{ font-family:var(--mono); font-size:12.5px; }
.verdict.pass{ color:var(--signal); }
.verdict.fail{ color:var(--alert); }
.takeaways{ padding-left:18px; }
.takeaways li{ margin-bottom:8px; font-size:14.5px; }

/* toast */
.toast{
  position:fixed; left:50%; bottom:26px; transform:translateX(-50%) translateY(20px);
  background:var(--panel-2); border:1px solid var(--edge); border-left:3px solid var(--amber);
  padding:12px 18px; font-size:14px; max-width:min(560px,92vw);
  opacity:0; pointer-events:none; transition:opacity .25s ease, transform .25s ease; z-index:60;
}
.toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.toast.good{ border-left-color:var(--signal); }
.toast.bad{ border-left-color:var(--alert); }

/* modal */
.modal{ position:fixed; inset:0; background:rgba(3,12,10,.82); display:grid; place-items:center; padding:20px; z-index:80; }
.modal-panel{
  background:var(--panel); border:1px solid var(--edge); padding:26px; max-width:560px; width:100%;
  max-height:86vh; overflow:auto;
}
.modal-panel h2{ margin-top:0; }
.modal-panel li{ margin-bottom:8px; font-size:14.5px; }

/* boot sequence: the single orchestrated motion moment */
@media (prefers-reduced-motion:no-preference){
  .boot > *{ opacity:0; animation:rise .5s ease forwards; }
  .boot > *:nth-child(1){ animation-delay:.05s; }
  .boot > *:nth-child(2){ animation-delay:.16s; }
  .boot > *:nth-child(3){ animation-delay:.27s; }
}
@keyframes rise{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:none; } }

@media (max-width:860px){
  .brief, .plan-wrap, .split{ grid-template-columns:1fr; gap:22px; }
  .bins{ grid-template-columns:1fr; }
  .clock-value{ font-size:24px; }
  .topbar{ padding-bottom:10px; }
}

/* --------------------------------------------------------------- BUGFIX
   The HTML `hidden` attribute is applied by the UA stylesheet as
   [hidden]{display:none}. Author rules below set an explicit display on
   .topbar, .breach, .evidence and .modal, and author styles beat the UA
   sheet — so those elements stayed on screen regardless of `hidden`.
   For .modal that was fatal: a full-screen z-index:80 overlay sat over the
   game from the first frame and swallowed every click.
   ---------------------------------------------------------------------- */
[hidden] { display: none !important; }