/* =====================================================================
   TN-1986-EUV  STYLE SHEET
   Two visual modes:
     .paper    aged technical-manual page (dark ink on warm stock)
     .terminal control-panel display (phosphor amber/green on dark)
   ===================================================================== */

:root{
  --paper:#efe9d8;
  --paper-line:#cabfa0;
  --ink:#25211a;
  --ink-soft:#5a5240;
  --rule:#8a7f63;
  --warn:#a3271f;
  --caution:#9a6b16;

  --panel-bg:#0b1416;
  --panel-grid:#12262a;
  --amber:#ffb000;
  --amber-dim:#8a5f00;
  --green:#39ff88;
  --green-dim:#1f7a45;
  --cyan:#49d6e0;
  --steel:#9fb0b3;
  --danger:#ff5a4d;

  --mono:"Courier New",Courier,monospace;
  --serif:Georgia,"Times New Roman",serif;
  --sans:"Arial Narrow",Arial,sans-serif;
}

*{box-sizing:border-box;}

html,body{margin:0;padding:0;}
body{
  background:#1a1712;
  color:var(--ink);
  font-family:var(--serif);
  font-size:16px;
  line-height:1.5;
}

/* -------------------------- DOCUMENT HEADER -------------------------- */
.doc-head{
  display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;
  background:#0b0e0d;color:#e7e1cf;
  padding:8px 16px;border-bottom:3px double #6f6650;
  font-family:var(--sans);letter-spacing:.06em;
}
.doc-head-left{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.stencil{
  font-family:var(--sans);font-weight:bold;font-size:1.5rem;
  letter-spacing:.22em;color:var(--amber);
  border:2px solid var(--amber);padding:1px 8px;border-radius:2px;
}
.doc-title{font-size:.86rem;text-transform:uppercase;opacity:.9;}
.doc-head-right{display:flex;flex-direction:column;font-size:.72rem;text-align:right;opacity:.85;}

/* ------------------------------ TABS ------------------------------ */
.tabs{
  display:flex;flex-wrap:wrap;gap:2px;
  background:#0b0e0d;padding:0 10px;
  border-bottom:2px solid #6f6650;
}
.tab{
  font-family:var(--sans);font-size:.8rem;letter-spacing:.08em;
  text-transform:uppercase;
  background:#2a2a26;color:#cfc7b2;
  border:1px solid #3d3c36;border-bottom:none;
  padding:9px 16px;margin-top:6px;cursor:pointer;
  border-radius:6px 6px 0 0;transition:background .12s,color .12s;
}
.tab:hover{background:#3a3a34;color:#fff;}
.tab.active{background:var(--paper);color:var(--ink);font-weight:bold;}

/* ------------------------------ PANELS ------------------------------ */
main{max-width:1120px;margin:0 auto;padding:0;}
.panel{display:none;}
.panel.active{display:block;}

/* ============================ PAPER MODE ============================ */
.paper{
  background:
    repeating-linear-gradient(transparent,transparent 31px,rgba(138,127,99,.10) 31px,rgba(138,127,99,.10) 32px),
    var(--paper);
  color:var(--ink);
  padding:6px 0 28px;
}
.page{
  max-width:840px;margin:22px auto;padding:34px 44px;
  background:var(--paper);
  border:1px solid var(--rule);
  box-shadow:0 2px 0 rgba(0,0,0,.25),0 10px 30px rgba(0,0,0,.35);
  position:relative;
}
.page::before{
  /* punch-hole margin like a service binder */
  content:"";position:absolute;left:16px;top:0;bottom:0;width:1px;
  background:var(--rule);opacity:.4;
}
.paper h1{
  font-family:var(--sans);font-size:1.35rem;letter-spacing:.08em;
  text-transform:uppercase;margin:0 0 14px;padding-bottom:8px;
  border-bottom:3px double var(--rule);
}
.paper h2{
  font-family:var(--sans);font-size:1.02rem;letter-spacing:.05em;
  text-transform:uppercase;margin:22px 0 8px;color:var(--ink);
}
.lead{font-size:1.02rem;font-style:italic;color:var(--ink-soft);}
.turn{
  font-family:var(--sans);letter-spacing:.08em;text-transform:uppercase;
  font-weight:bold;text-align:center;margin-top:26px;padding-top:12px;
  border-top:1px solid var(--rule);
}

/* numbered procedures */
.proc{margin:8px 0 8px 0;padding-left:22px;}
.proc li{margin:5px 0;}
.proc.small{font-family:var(--sans);font-size:.86rem;line-height:1.45;}

/* spec tables */
.spec{width:100%;border-collapse:collapse;margin:10px 0;font-size:.9rem;}
.spec th,.spec td{border:1px solid var(--rule);padding:6px 9px;text-align:left;vertical-align:top;}
.spec th{background:#e2dac4;font-family:var(--sans);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem;}
.spec tr:nth-child(even) td{background:rgba(138,127,99,.07);}

/* callouts: NOTE / CAUTION / WARNING */
.callout{
  display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;
  margin:16px 0;padding:10px 12px;border:1.5px solid var(--rule);
  background:rgba(255,255,255,.35);
}
.callout p{margin:0;font-size:.94rem;}
.callout-tag{
  font-family:var(--sans);font-weight:bold;letter-spacing:.1em;
  padding:3px 8px;color:#fff;height:fit-content;font-size:.8rem;
  border-radius:2px;white-space:nowrap;
}
.callout.note{border-left:8px solid #2f5d86;}
.callout.note .callout-tag{background:#2f5d86;}
.callout.caution{border-left:8px solid var(--caution);}
.callout.caution .callout-tag{background:var(--caution);}
.callout.warning{border-left:8px solid var(--warn);}
.callout.warning .callout-tag{background:var(--warn);}
.callout.mini{margin:12px 0;font-size:.8rem;}
.callout.mini p{font-size:.8rem;}

/* figure 1-1 schematic */
.figframe{border:1px solid var(--rule);padding:14px;margin:16px 0;background:rgba(255,255,255,.3);}
.fig-euv{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap;min-height:84px;}
.fig-euv>div{font-family:var(--sans);font-size:.72rem;text-align:center;letter-spacing:.05em;}
.fig-euv-src,.fig-euv-optics,.fig-euv-wafer{
  border:2px solid var(--ink);padding:10px 12px;background:#e6dec8;font-weight:bold;
}
.fig-euv-src{border-radius:50%;}
.fig-euv-wafer{border-radius:4px;}
.fig-euv-beam{
  width:70px;height:0;border-top:3px dashed var(--warn);position:relative;
}
.fig-euv-beam.short{width:60px;}
.fig-euv-beam::after{content:"\25B6";position:absolute;right:-4px;top:-10px;color:var(--warn);font-size:.8rem;}
.figcap{font-family:var(--sans);font-size:.74rem;letter-spacing:.05em;text-align:center;margin:10px 0 0;color:var(--ink-soft);}

/* ============================ TERMINAL MODE ============================ */
.terminal{
  background:
    repeating-linear-gradient(0deg,transparent,transparent 3px,rgba(0,0,0,.16) 3px,rgba(0,0,0,.16) 4px),
    radial-gradient(120% 120% at 50% 0%,#123 0%,var(--panel-bg) 70%);
  color:var(--amber);
  font-family:var(--mono);
  padding:0 0 24px;min-height:60vh;
}
.term-head{
  display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  padding:10px 16px;border-bottom:1px solid var(--amber-dim);
  color:var(--amber);letter-spacing:.08em;font-size:.85rem;
  text-shadow:0 0 6px rgba(255,176,0,.45);
}
.term-body{
  display:grid;grid-template-columns:1fr 320px;gap:18px;
  padding:16px;align-items:start;
}
.term-left{min-width:0;}
.term-right{
  border:1px solid var(--amber-dim);padding:12px 14px;
  background:rgba(0,0,0,.35);font-size:.82rem;color:#d9c79a;
}
.term-right h3{
  font-size:.82rem;letter-spacing:.12em;color:var(--amber);
  border-bottom:1px solid var(--amber-dim);padding-bottom:4px;margin:4px 0 8px;
}
.term-right h3:not(:first-child){margin-top:16px;}
.term-right .proc{padding-left:18px;}
.term-right .proc li{margin:6px 0;}

/* hotbar */
.hotbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.hb{
  font-family:var(--mono);font-size:.74rem;line-height:1.2;
  background:#0e1e21;color:var(--amber);
  border:1px solid var(--amber-dim);padding:8px 10px;cursor:pointer;
  min-width:78px;text-align:center;letter-spacing:.04em;
  transition:all .1s;
}
.hb small{display:block;color:#8f7c4d;font-size:.62rem;margin-top:2px;letter-spacing:0;}
.hb:hover{border-color:var(--amber);background:#15292d;}
.hb.selected{background:var(--amber);color:#0b1416;box-shadow:0 0 12px rgba(255,176,0,.6);}
.hb.selected small{color:#3a2c00;}

/* canvas */
.canvas-wrap{
  border:1px solid var(--amber-dim);background:#06090a;
  padding:6px;display:inline-block;max-width:100%;
  box-shadow:inset 0 0 40px rgba(0,0,0,.7);
}
canvas{display:block;max-width:100%;height:auto;image-rendering:auto;cursor:crosshair;background:#06090a;}

/* controls */
.term-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px;}
.ctl{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;
  background:#0e1e21;color:var(--amber);
  border:1px solid var(--amber-dim);padding:7px 14px;cursor:pointer;transition:all .1s;
}
.ctl:hover{border-color:var(--amber);background:#15292d;}
.ctl.primary{background:var(--green-dim);color:#eafff2;border-color:var(--green);}
.ctl.primary:hover{background:var(--green);color:#04120a;}
.dir-readout,.timer,.meter-label,#lp-meter-val{font-size:.78rem;color:#d9c79a;letter-spacing:.05em;}
.dir-readout b,.timer b{color:var(--green);}

/* recipes list */
.recipes{list-style:none;padding:0;margin:0;font-size:.78rem;}
.recipes li{margin:6px 0;padding:5px 7px;border:1px solid var(--amber-dim);background:rgba(0,0,0,.25);}
.recipes .rc-out{color:var(--green);}
.chip{display:inline-block;padding:0 5px;border-radius:2px;color:#04120a;font-weight:bold;margin:0 1px;}

.ship-count{margin-top:14px;font-size:.9rem;letter-spacing:.06em;color:var(--amber);}
.ship-count b{color:var(--green);font-size:1.1rem;}

/* meter */
.meter{display:inline-block;width:130px;height:14px;border:1px solid var(--amber-dim);background:#0a0f10;vertical-align:middle;}
.meter-fill{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--danger),var(--amber) 45%,var(--green));transition:width .12s;}

/* level select + key */
.level-select{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap;}
.lvl-btn{font-family:var(--mono);font-size:.78rem;background:#0e1e21;color:var(--amber);
  border:1px solid var(--amber-dim);padding:7px 14px;cursor:pointer;}
.lvl-btn:hover{border-color:var(--amber);background:#15292d;}
.lvl-btn.active{background:var(--cyan);color:#03181a;border-color:var(--cyan);}
.lvl-btn.solved::after{content:" \2714";color:var(--green);}

.lp-key{list-style:none;padding:0;margin:0;font-size:.76rem;}
.lp-key li{display:flex;align-items:center;gap:8px;margin:6px 0;}
.lp-key span{width:16px;height:16px;display:inline-block;border:1px solid #555;flex:0 0 auto;}
.k-src{background:var(--amber);}
.k-mir{background:#bfe9ee;transform:rotate(0);}
.k-fix{background:#5a6a6c;}
.k-ret{background:#6d3f8f;}
.k-waf{background:var(--green);}
.k-wall{background:#2a3a3d;}

/* win banners */
.win-banner{
  margin:8px 16px;padding:14px;text-align:center;
  font-family:var(--mono);letter-spacing:.14em;font-size:1.1rem;
  background:var(--green-dim);color:#eafff2;border:1px solid var(--green);
  text-shadow:0 0 10px rgba(57,255,136,.6);animation:flash 1s ease;
}
@keyframes flash{from{opacity:0;transform:scale(.96);}to{opacity:1;transform:scale(1);}}
.hidden{display:none;}

/* ---------------------------- FOOTER ---------------------------- */
.doc-foot{
  display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  background:#0b0e0d;color:#cfc7b2;
  font-family:var(--sans);font-size:.72rem;letter-spacing:.08em;
  padding:8px 16px;border-top:3px double #6f6650;text-transform:uppercase;
}

/* ---------------------------- RESPONSIVE ---------------------------- */
@media (max-width:880px){
  .term-body{grid-template-columns:1fr;}
  .term-right{order:2;}
  .page{padding:22px 20px;}
  .page::before{display:none;}
}