/* =====================================================================
   HANBO ZHAN — SPECIMEN ARCHIVE  ·  sys.css
   A website that behaves like a monitoring / diagnostic apparatus.
   Phosphor-terminal aesthetic. The machinery is the design.
   ===================================================================== */

@font-face{font-family:"pmono";src:local("IBM Plex Mono");}

:root{
  /* P1 phosphor green mono-palette + CRT amber alarm */
  --void:#050806;          /* near-black green-tinted void */
  --void2:#080d0a;
  --scan-bg:#060a08;
  --p0:#0a1410;            /* deep phosphor shadow */
  --p1:#1c3a2c;            /* dim trace */
  --p2:#3f7a5c;            /* mid phosphor */
  --p3:#7dffb0;            /* live phosphor (primary ink) */
  --p4:#c9ffe2;            /* hot phosphor / highlight */
  --amber:#ffb454;         /* CRT amber — warnings, human residue */
  --amber-dim:#7a5a2a;
  --alarm:#ff5a3c;         /* alarm red — used sparingly */
  --grid:rgba(125,255,176,0.07);
  --grid2:rgba(125,255,176,0.14);
  --edge:rgba(125,255,176,0.18);
  --edge2:rgba(125,255,176,0.32);

  --mono:"pmono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --serif:"Fraunces",Georgia,serif;   /* the human residue */
  --pad:clamp(14px,3.5vw,44px);
  --ch:clamp(10px,0.92vw,13px);        /* base terminal cell */
}

*{margin:0;padding:0;box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  background:var(--void);
  color:var(--p3);
  font-family:var(--mono);
  font-size:var(--ch);
  line-height:1.6;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  min-height:100vh;
  cursor:crosshair;
}
::selection{background:var(--p3);color:var(--void);}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}

/* ---- fixed apparatus layers (z-order from back to front) ---- */
#automata{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;}    /* cellular automata field */
#dataflow{position:fixed;inset:0;z-index:1;pointer-events:none;}               /* falling glyph streams */
.grid-fx{position:fixed;inset:0;z-index:2;pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:var(--ch) var(--ch);
  -webkit-mask-image:radial-gradient(130% 100% at 50% 0%,#000 30%,transparent 90%);
          mask-image:radial-gradient(130% 100% at 50% 0%,#000 30%,transparent 90%);}

/* CRT: scanlines + vignette + flicker + subtle chromatic bloom */
.crt{position:fixed;inset:0;z-index:60;pointer-events:none;mix-blend-mode:screen;
  background:
    repeating-linear-gradient(0deg,
      rgba(125,255,176,0.05) 0 1px,
      rgba(0,0,0,0) 1px 3px);}
.crt::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 120% at 50% 50%,transparent 55%,rgba(0,0,0,.55) 100%);
  mix-blend-mode:multiply;}
.crt-flick{position:fixed;inset:0;z-index:61;pointer-events:none;
  background:rgba(125,255,176,0.014);animation:flick .12s steps(2) infinite;mix-blend-mode:screen;}
@keyframes flick{50%{opacity:.35;}}

/* moving horizontal sweep, like a refresh bar */
.sweep{position:fixed;left:0;right:0;height:14vh;z-index:59;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(125,255,176,0.05),transparent);
  animation:sweep 7s linear infinite;}
@keyframes sweep{0%{top:-14vh}100%{top:100%}}

/* probe cursor readout (the mouse is a sensor) */
.probe{position:fixed;z-index:9999;pointer-events:none;font-size:9px;line-height:1.3;
  color:var(--p4);text-shadow:0 0 6px rgba(125,255,176,.5);white-space:pre;letter-spacing:.08em;
  transform:translate(14px,14px);}
.probe .amber{color:var(--amber);}

/* ---- system bar (top) ---- */
.sysbar{position:fixed;top:0;left:0;right:0;z-index:70;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:8px var(--pad);
  background:linear-gradient(180deg,var(--void) 40%,rgba(5,8,6,.7) 80%,transparent);
  font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--p2);}
.sysbar .idg{color:var(--p3);letter-spacing:.05em;}
.sysbar .idg b{color:var(--p4);font-weight:600;}
.sysbar .idg .cur{color:var(--amber);animation:blink 1s steps(2) infinite;}
@keyframes blink{50%{opacity:0;}}
.sysbar nav{display:flex;gap:clamp(10px,1.6vw,22px);flex-wrap:wrap;}
.sysbar nav a{position:relative;color:var(--p2);transition:color .2s;white-space:nowrap;}
.sysbar nav a::before{content:"[";opacity:0;margin-right:2px;transition:opacity .2s;}
.sysbar nav a::after{content:"]";opacity:0;margin-left:2px;transition:opacity .2s;}
.sysbar nav a:hover,.sysbar nav a.on{color:var(--p4);}
.sysbar nav a:hover::before,.sysbar nav a:hover::after,
.sysbar nav a.on::before,.sysbar nav a.on::after{opacity:1;}
.sysbar .stat{display:flex;gap:12px;align-items:center;color:var(--p2);white-space:nowrap;}
.sysbar .stat b{color:var(--p3);font-weight:400;}
.sysbar .led{width:6px;height:6px;border-radius:50%;background:var(--p3);
  box-shadow:0 0 8px var(--p3);animation:pulse 1.4s ease-in-out infinite;}
@keyframes pulse{50%{opacity:.25;box-shadow:none;}}

/* audio toggle */
.snd{color:var(--p2);letter-spacing:.14em;transition:color .2s;}
.snd:hover{color:var(--p4);}
.snd .d{color:var(--amber);}
.snd.off{color:var(--amber-dim);}
.snd.off .d{color:var(--amber-dim);}

/* ---- boot overlay ---- */
#boot{position:fixed;inset:0;z-index:200;background:var(--void);
  padding:clamp(20px,6vh,80px) var(--pad);
  font-size:11px;line-height:1.85;color:var(--p2);overflow:hidden;
  transition:opacity .5s ease;}
#boot .log{white-space:pre-wrap;max-width:900px;}
#boot .log .ok{color:var(--p3);}
#boot .log .hi{color:var(--p4);}
#boot .log .am{color:var(--amber);}
#boot .log .al{color:var(--alarm);}
#boot .caret{color:var(--p4);animation:blink 1s steps(2) infinite;}
#boot.done{opacity:0;pointer-events:none;}
#boot .skip{position:absolute;bottom:var(--pad);right:var(--pad);
  font-size:9px;letter-spacing:.2em;color:var(--p1);text-transform:uppercase;cursor:pointer;}
#boot .skip:hover{color:var(--p3);}

/* ---- generic content shell ---- */
main{position:relative;z-index:5;}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--pad);}
section{position:relative;z-index:5;padding:clamp(60px,11vh,130px) 0;}

/* section header as a "record header" */
.rhead{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:end;
  border-bottom:1px solid var(--edge);padding-bottom:12px;margin-bottom:clamp(30px,6vh,60px);}
.rhead .tag{font-size:9px;letter-spacing:.28em;text-transform:uppercase;color:var(--p2);align-self:start;}
.rhead h2{font-size:clamp(22px,4vw,44px);letter-spacing:.02em;color:var(--p4);
  text-transform:uppercase;font-weight:500;line-height:1;}
.rhead .meta{font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--p2);text-align:right;}

/* reveal on scroll (decode-in) */
.rv{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease;}
.rv.in{opacity:1;transform:none;}

/* footer = shutdown line */
footer{position:relative;z-index:5;border-top:1px solid var(--edge);
  padding:20px var(--pad);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--p1);}
footer b{color:var(--p2);font-weight:400;}

/* utility */
.amber{color:var(--amber);}
.hi{color:var(--p4);}
.dim{color:var(--p2);}
.hr{height:1px;background:var(--edge);margin:clamp(30px,6vh,60px) 0;}
.glowline{height:1px;background:linear-gradient(90deg,transparent,var(--p3),transparent);}

@media(max-width:820px){
  body{cursor:auto;}
  .probe{display:none;}
  .sysbar{flex-wrap:wrap;}
  .sysbar nav{order:3;width:100%;font-size:9px;gap:18px;}
  .sysbar nav a{padding:6px 2px;margin:-6px -2px;}
  .snd{padding:6px 4px;margin:-6px -4px;}
  #boot .skip{padding:10px 12px;margin:-10px -12px;}
  .rhead{grid-template-columns:1fr;}
  .rhead .meta{text-align:left;}
}
@media(max-width:420px){
  .sysbar .stat{gap:8px;white-space:normal;flex-wrap:wrap;justify-content:flex-end;}
}
@media(prefers-reduced-motion:reduce){
  .crt-flick,.sweep,#automata,#dataflow{display:none;}
  .rv{transition:none;}
}

/* ============================================================
   ===============  macOS WINDOW CHROME  ======================
   Statement, terminal and subject framed as OS windows.
   Plus expanded colour: amber, magenta, cyan, alarm accents.
   ============================================================ */

/* extra colour tokens layered on the phosphor base */
:root{
  --mac-bg:#0c110e;
  --mac-bar:#141a16;
  --mag:#ff4fd8;      /* magenta accent (from the fish projection) */
  --cyan:#38e6ff;     /* cyan accent */
  --violet:#9b7bff;
  --tl-red:#ff5f57;   /* traffic lights */
  --tl-yellow:#febc2e;
  --tl-green:#28c840;
}

.macwin{border:1px solid var(--edge2);background:var(--mac-bg);
  border-radius:9px;overflow:hidden;position:relative;
  box-shadow:0 0 0 1px rgba(0,0,0,.4), 0 24px 60px rgba(0,0,0,.5),
    0 0 40px rgba(125,255,176,.05);}
.macbar{display:flex;align-items:center;gap:12px;padding:9px 13px;
  background:linear-gradient(180deg,#182019,#101511);
  border-bottom:1px solid var(--edge);position:relative;}
.traffic{display:flex;gap:8px;flex:0 0 auto;}
.traffic i{width:12px;height:12px;border-radius:50%;display:block;
  box-shadow:inset 0 0 0 .5px rgba(0,0,0,.35);}
.traffic i:nth-child(1){background:var(--tl-red);}
.traffic i:nth-child(2){background:var(--tl-yellow);}
.traffic i:nth-child(3){background:var(--tl-green);}
.mactitle{flex:1;text-align:center;font-size:10px;letter-spacing:.14em;
  color:var(--p2);text-transform:lowercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.macmeta{flex:0 0 auto;font-size:9px;letter-spacing:.16em;color:var(--amber);text-transform:uppercase;}
.macbody{padding:clamp(20px,3vw,34px);}
.macbody p{font-family:var(--serif);font-weight:300;
  font-size:clamp(15px,1.55vw,21px);line-height:1.62;color:var(--p4);margin-bottom:1.05em;}
.macbody p em{font-style:italic;color:var(--amber);}
.macbody .term{font-family:var(--mono);font-size:10px;color:var(--p2);
  margin-top:22px;line-height:1.9;white-space:pre-wrap;
  border-top:1px dashed var(--edge);padding-top:16px;}

/* statement layout gets the mac window on the right, keywords left */
.stmt{grid-template-columns:0.8fr 2fr;}
.kw-block{margin-bottom:26px;}
.kw-block .kw-h{display:block;font-size:9px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--amber);margin-bottom:10px;}
.kw-block b{display:block;font-weight:400;color:var(--p3);font-size:11px;
  letter-spacing:.06em;padding:2px 0;border-bottom:1px solid transparent;transition:.2s;}
.kw-block b:hover{color:var(--p4);border-color:var(--edge);padding-left:6px;}

/* subject frame: mac traffic lights in the corner overlay */
.subject{border-radius:9px;}
.subject .mactl{position:absolute;top:9px;left:11px;z-index:3;display:flex;gap:7px;}
.subject .mactl i{width:11px;height:11px;border-radius:50%;}
.subject .mactl i:nth-child(1){background:var(--tl-red);}
.subject .mactl i:nth-child(2){background:var(--tl-yellow);}
.subject .mactl i:nth-child(3){background:var(--tl-green);}

/* terminal (contact) reuses mac chrome */
.term{border-radius:9px;}
.term .bar{background:linear-gradient(180deg,#182019,#101511);}
.term .bar .dots i:first-child{background:var(--tl-red);}
.term .bar .dots i:nth-child(2){background:var(--tl-yellow);}
.term .bar .dots i:last-child{background:var(--tl-green);}

/* sprinkle expanded colour through existing accents */
.spec:hover .sname{text-shadow:0 0 14px rgba(56,230,255,.4);}
.spec:nth-child(3n+1):hover::before{background:var(--mag);}
.spec:nth-child(3n+2):hover::before{background:var(--cyan);}
.spec:nth-child(3n):hover::before{background:var(--amber);}
.rhead h2{background:linear-gradient(92deg,var(--p4),var(--cyan) 60%,var(--mag));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero h1{background:linear-gradient(120deg,var(--p4),var(--cyan));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero h1 .sub{-webkit-text-fill-color:var(--amber);}

/* dataflow gets occasional magenta/cyan glyphs via blend (handled in JS colour) */

@media(max-width:820px){
  .stmt{grid-template-columns:1fr;}
  .macbody{padding:18px;}
}
@media(prefers-reduced-motion:reduce){
  .macwin{box-shadow:0 10px 30px rgba(0,0,0,.5);}
}

/* nudge subject HUD text below the traffic lights */
/* subject HUD padding now handled directly in pages.css */