:root{
  --bg: #060a07;
  --bg-crt: #050805;
  --green: #39ff6a;
  --green-dim: #1f7a3d;
  --green-faint: #0f3d1f;
  --amber: #ffb300;
  --red: #ff4d4d;
  --white: #d9ffe4;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --disp: 'VT323', var(--mono);

  --panel-top: rgba(20,40,25,0.35);
  --panel-bottom: rgba(5,10,6,0.6);
  --panel-glow: rgba(57,255,106,0.08);
  --titlebar-bg: rgba(15,61,31,0.35);
  --logo-glow: rgba(57,255,106,0.45);
}

body.theme-amber{
  --green: #ffb300;
  --green-dim: #8a5c00;
  --green-faint: #3d2a00;
  --amber: #39ff6a;
  --white: #fff3d9;
  --bg: #0a0805;

  --panel-top: rgba(40,30,10,0.35);
  --panel-bottom: rgba(10,8,5,0.6);
  --panel-glow: rgba(255,179,0,0.08);
  --titlebar-bg: rgba(61,42,0,0.35);
  --logo-glow: rgba(255,179,0,0.45);
}

*{box-sizing:border-box;}

html,body{
  margin:0; padding:0; height:100%;
  background: var(--bg);
  color: var(--green);
  font-family: var(--mono);
  overflow-x:hidden;
}

/* ---- ambient matrix rain (background canvas) ---- */
#rain{
  position:fixed; inset:0; z-index:0;
  opacity:0.22;
  pointer-events:none;
}

/* ---- CRT frame ---- */
.crt{
  position:relative; z-index:1;
  min-height:100vh;
  padding: 6vh 4vw 8vh;
  display:flex; flex-direction:column; align-items:center;
}
.crt::before{
  content:"";
  position:fixed; inset:0; z-index:5; pointer-events:none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.18) 3px
  );
  mix-blend-mode: multiply;
}
.crt::after{
  content:"";
  position:fixed; inset:0; z-index:5; pointer-events:none;
  box-shadow: inset 0 0 14vw rgba(0,0,0,0.7);
}

.screen{
  width:100%; max-width: 880px;
  border: 1px solid var(--green-dim);
  border-radius: 6px;
  background: linear-gradient(180deg, var(--panel-top), var(--panel-bottom));
  box-shadow: 0 0 40px var(--panel-glow), inset 0 0 60px rgba(0,0,0,0.5);
  padding: 0;
  overflow:hidden;
}

.screen.glitch{
  animation: glitchShift 0.4s steps(2) both;
}
@keyframes glitchShift{
  0%   { transform: translate(0,0); filter: none; }
  10%  { transform: translate(-3px, 1px); filter: drop-shadow(2px 0 0 #ff2e5b) drop-shadow(-2px 0 0 #00e5ff); }
  20%  { transform: translate(3px, -1px); filter: drop-shadow(-2px 0 0 #ff2e5b) drop-shadow(2px 0 0 #00e5ff); }
  30%  { transform: translate(-2px, 2px); filter: drop-shadow(2px 0 0 #ff2e5b) drop-shadow(-2px 0 0 #00e5ff); }
  40%  { transform: translate(2px, -2px); filter: none; }
  50%  { transform: translate(-3px, 0); filter: drop-shadow(-3px 0 0 #ff2e5b) drop-shadow(3px 0 0 #00e5ff); }
  60%  { transform: translate(3px, 1px); filter: none; }
  70%  { transform: translate(-1px, -1px); filter: drop-shadow(2px 0 0 #ff2e5b) drop-shadow(-2px 0 0 #00e5ff); }
  80%  { transform: translate(1px, 2px); filter: none; }
  90%  { transform: translate(0, -1px); filter: none; }
  100% { transform: translate(0,0); filter: none; }
}

.titlebar{
  display:flex; align-items:center; gap:8px;
  padding: 10px 14px;
  background: var(--titlebar-bg);
  border-bottom: 1px solid var(--green-faint);
  font-size: 13px;
  color: var(--green-dim);
  letter-spacing: 0.06em;
}
.dot{ width:9px; height:9px; border-radius:50%; background: var(--green-dim); opacity:0.6; }
.titlebar .path{ margin-left:auto; opacity:0.8; }

.tabnav{
  display:flex; gap:4px;
  padding: 8px 14px 0;
  background: var(--titlebar-bg);
  border-bottom: 1px solid var(--green-faint);
  font-size: 13px;
}
.tabnav a{
  color: var(--green-dim);
  text-decoration:none;
  padding: 6px 14px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  letter-spacing: 0.04em;
}
.tabnav a:hover{ color: var(--green); }
.tabnav a.active{
  color: var(--white);
  background: var(--panel-top);
  border-color: var(--green-faint);
}

.term{
  padding: 22px 20px 18px;
  min-height: 60vh;
  font-size: 15px;
  line-height: 1.55;
}

.term::selection, .term *::selection{ background: var(--green); color: #041006; }

h1.logo{
  font-family: var(--disp);
  font-size: clamp(9px, 2.6vw, 15px);
  line-height:1.15;
  white-space:pre;
  margin: 0 0 18px;
  color: var(--green);
  text-shadow: 0 0 8px var(--logo-glow);
}

.line{ margin: 0 0 2px; white-space: pre-wrap; word-break: break-word; }
.dim{ color: var(--green-dim); }
.amber{ color: var(--amber); }
.red{ color: var(--red); }
.white{ color: var(--white); }
.bold{ font-weight:600; }
.ok::before{ content:"[ OK ] "; color: var(--green); }
.warn::before{ content:"[WARN] "; color: var(--amber); }

a{ color: var(--white); text-decoration: underline dotted var(--green-dim); text-underline-offset: 3px; }
a:hover{ color: var(--green); }
a:focus-visible, button:focus-visible, input:focus-visible, canvas:focus-visible{
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.promptline{
  display:flex; align-items:center; gap:8px;
  margin-top: 10px;
}
.promptline .p{ color: var(--amber); flex-shrink:0; }
.promptline input{
  flex:1;
  background: transparent;
  border: none;
  color: var(--white);
  font-family: var(--mono);
  font-size: 15px;
  caret-color: var(--green);
}
.promptline input:focus{ outline:none; }

.cursor{
  display:inline-block; width:8px; height:1em; background: var(--green);
  vertical-align: text-bottom; margin-left:2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity:0; } }

.footer{
  margin-top: 26px; font-size: 12px; color: var(--green-faint);
}

/* static content pages (resume, projects) */
.page{
  padding: 26px 24px 30px;
}
.page h1{
  font-family: var(--disp);
  font-size: 34px;
  margin: 0 0 4px;
  color: var(--green);
  text-shadow: 0 0 8px var(--logo-glow);
  letter-spacing: 0.02em;
}
.page .subtitle{
  color: var(--green-dim);
  font-size: 13px;
  margin: 0 0 28px;
  letter-spacing: 0.06em;
}
.page h2{
  font-family: var(--disp);
  font-size: 22px;
  color: var(--amber);
  margin: 30px 0 10px;
  letter-spacing: 0.03em;
}
.page h2:first-of-type{ margin-top: 0; }
.page p{
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.6;
}
.page ul{
  margin: 0 0 10px;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
}
.page li{ margin-bottom: 4px; }
.page .tag{
  display:inline-block;
  color: var(--green-dim);
  font-size: 12px;
  border: 1px solid var(--green-faint);
  border-radius: 3px;
  padding: 1px 6px;
  margin-right: 6px;
}
.page .back{
  display:inline-block;
  margin-top: 20px;
  font-size: 12px;
  color: var(--green-faint);
}

/* 404 / kernel panic page */
.page.panic h1{
  color: var(--red);
  text-shadow: 0 0 10px rgba(255,77,77,0.5);
  font-size: 28px;
}
.panic-dump{
  margin: 18px 0;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--green-faint);
  border-radius: 4px;
  padding: 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--green-dim);
  overflow-x: auto;
  white-space: pre-wrap;
}

/* snake */
#snakeWrap{ margin: 14px 0; display:none; flex-direction:column; align-items:flex-start; gap:6px; }
#snakeCanvas{
  background: #030503; border: 1px solid var(--green-dim);
  image-rendering: pixelated;
}

@media (max-width: 560px){
  .term{ font-size: 13.5px; padding: 16px 12px; }
  .screen{ max-width: 100%; }
}

@media (prefers-reduced-motion: reduce){
  .cursor{ animation:none; }
  #rain{ display:none; }
}