/* ============================================================
   PIXEL PENGS — "The Dive"  ·  v2
   One continuous painted world. Sticky stage, camera on rails.
   NOTE: never overflow-x:hidden on body — it kills position:sticky.
   ============================================================ */

:root{
  --ink:#1c1a3a;
  --ink-deep:#e9f2ff;
  --bodybg:#4a3a92;
  --panel:rgba(6,10,30,.62);
  --panel-line:rgba(255,255,255,.14);
  --pixel:"Press Start 2P", ui-monospace, monospace;
  --body:"Fraunces", Georgia, "Times New Roman", serif;
}

*,*::before,*::after{box-sizing:border-box}

html{
  overflow-x:clip;              /* never overflow-x:hidden on body */
  scrollbar-width:none;
  background:var(--bodybg);
}
html::-webkit-scrollbar{width:0;height:0}

body{
  margin:0;
  background:var(--bodybg);
  color:var(--ink-deep);
  font-family:var(--body);
  font-optical-sizing:auto;
  -webkit-font-smoothing:antialiased;
  transition:background-color .5s linear;
}

#top{position:absolute;top:0;left:0;width:1px;height:1px}

/* the filter defs must not take part in layout — an inline <svg> at the end of
   the body adds a line box, which makes the document taller than #track and
   pulls the sticky stage off the top of the viewport at max scroll */
#defs{position:absolute;left:0;top:0;width:0;height:0;overflow:hidden;pointer-events:none}

#track{position:relative;width:100%}

#stage{
  position:sticky;
  top:0;
  left:0;
  width:100%;
  height:100vh;
  height:100svh;
  overflow:hidden;
}

/* ---------------------------------------------------------- the world */

#world{position:absolute;inset:0;z-index:1}
#world.wobble{filter:url(#refract)}

#scene,#fx{
  position:absolute;
  top:0;left:0;
  image-rendering:pixelated;
  image-rendering:crisp-edges;
  display:block;
}
#fx{pointer-events:none}

/* ---------------------------------------------------------- passages */

#panels{position:absolute;inset:0;z-index:3;pointer-events:none}

.panel{
  position:absolute;
  pointer-events:auto;
  opacity:0;
  visibility:hidden;
  background:var(--panel);
  border:1px solid var(--panel-line);
  border-radius:2px;
  padding:18px 20px;
  backdrop-filter:blur(2px);
  -webkit-backdrop-filter:blur(2px);
  box-shadow:0 10px 40px rgba(2,4,16,.35);
  transition:opacity .3s linear;
  will-change:opacity;
  max-width:min(38ch,44vw);
}
.panel p{margin:0 0 .7em}
.panel p:last-child{margin-bottom:0}

.panel.side-l{left:4.5vw;top:50%;transform:translateY(-50%)}
.panel.side-r{right:4.5vw;top:50%;transform:translateY(-50%)}
.panel.mid{left:50%;top:50%;transform:translate(-50%,-50%);max-width:min(34ch,40vw);text-align:center}
.panel.mid.top{top:12%;transform:translate(-50%,0)}
.panel.mid.bottom{top:auto;bottom:7%;transform:translateX(-50%)}

.wordmark{
  font-family:var(--pixel);
  font-size:clamp(22px,3.4vw,46px);
  line-height:1.18;
  letter-spacing:.02em;
  margin:0 0 14px;
  color:#fff;
  text-shadow:0 3px 0 #2c2360, 0 0 22px rgba(160,120,255,.5);
}
.wordmark span{display:block}

.subtitle{
  font-size:clamp(13px,1.25vw,17px);
  color:#e6ddff;
  margin:0 0 16px;
  opacity:.94;
}

.chapter{
  font-family:var(--pixel);
  font-size:11px;
  line-height:1.7;
  letter-spacing:.04em;
  margin:0 0 8px;
  color:#dff4ff;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:9px;
}
.panel.mid .chapter{justify-content:center}
.chapter .num{color:#8fb4ff}
.chapter em{font-style:normal;color:#9fb0d8;font-size:9px;letter-spacing:.05em}
.chapter .num::after{content:" ·";color:#5f78b0}
.chapter span+em::before{content:"· ";color:#5f78b0}

.stamp{
  font-family:var(--pixel);
  font-size:8px;
  letter-spacing:.06em;
  color:#a8c4ee;
  margin:0 0 14px !important;
  padding:5px 8px;
  display:inline-block;
  border:1px solid rgba(168,196,238,.28);
  border-radius:2px;
  background:rgba(10,18,44,.5);
}

.lede{
  font-size:clamp(16px,1.5vw,21px);
  line-height:1.5;
  font-weight:600;
  color:#f2f7ff;
  max-width:34ch;
}
.rest{
  font-size:clamp(14px,1.15vw,17px);
  line-height:1.62;
  color:#cfdcf4;
  max-width:34ch;
  opacity:0;
  transition:opacity .3s linear;
}
.rest.on{opacity:1}
.panel.mid .lede,.panel.mid .rest{margin-left:auto;margin-right:auto}
.panel.big .lede{font-size:clamp(20px,2.4vw,32px);max-width:22ch}
.panel.big .rest{font-size:clamp(16px,1.6vw,22px);max-width:24ch}

.hint{
  font-family:var(--pixel);
  font-size:9px;
  letter-spacing:.08em;
  color:#cdbcff;
  margin-top:18px !important;
  animation:hintbob 2.6s steps(2,jump-none) infinite;
}
@keyframes hintbob{0%,49%{transform:translateY(0)}50%,100%{transform:translateY(3px)}}

.tchar{opacity:0}
.tchar.on{opacity:1}
.caret{
  display:inline-block;
  width:.52em;height:1em;
  margin-right:-.52em;              /* zero advance: the line never reflows */
  vertical-align:-.14em;
  background:currentColor;
  opacity:.8;
  animation:blink .7s steps(1) infinite;
}
@keyframes blink{0%,50%{opacity:.85}51%,100%{opacity:0}}

/* the surface panel is dark text on bright ice */
.panel[data-z="0"]{
  background:rgba(255,250,240,.72);
  border-color:rgba(70,60,130,.22);
  box-shadow:0 10px 40px rgba(60,50,120,.22);
}
.panel[data-z="0"] .wordmark{color:#2b2360;text-shadow:0 3px 0 #cbbdf4}
.panel[data-z="0"] .subtitle{color:#4a4278}
.panel[data-z="0"] .lede{color:#1c1a3a}
.panel[data-z="0"] .rest{color:#3b3766}
.panel[data-z="0"] .hint{color:#6a5cb8}

.cta{margin-top:22px !important}
.btn{
  display:inline-block;
  font-family:var(--pixel);
  font-size:13px;
  letter-spacing:.04em;
  color:#151033;
  background:#f0c040;
  padding:16px 22px;
  text-decoration:none;
  border-radius:2px;
  box-shadow:0 5px 0 #a9781c, 0 0 34px rgba(240,192,64,.45);
  transition:transform .12s steps(2), box-shadow .12s steps(2);
}
.btn:hover,.btn:focus-visible{transform:translateY(2px);box-shadow:0 3px 0 #a9781c,0 0 44px rgba(240,192,64,.6)}

.foot{
  margin-top:20px;
  font-family:var(--pixel);
  font-size:8px;
  line-height:2.1;
  letter-spacing:.05em;
  color:#8fa4cc;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  justify-content:center;
}
.foot a{color:#bcd2f4;text-decoration:none;border-bottom:1px solid rgba(188,210,244,.35)}
.foot a:hover{color:#fff}

/* ---------------------------------------------------------- HUD */

#hud{position:absolute;inset:0;z-index:6;pointer-events:none;font-family:var(--pixel)}
#meter{
  position:absolute;left:22px;bottom:22px;
  font-size:15px;letter-spacing:.04em;color:#e9f2ff;
  text-shadow:0 2px 0 rgba(4,8,24,.7);
  transition:color .5s linear;
}
#meter i{font-style:normal;font-size:9px;margin-left:5px;opacity:.75}
#sceneName{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
  font-size:9px;letter-spacing:.14em;color:#cfe0ff;
  opacity:0;transition:opacity .5s linear;text-align:center;white-space:nowrap;
  text-shadow:0 2px 0 rgba(4,8,24,.7);
}
#sceneName.on{opacity:.82}
#surface{
  position:absolute;right:22px;bottom:24px;
  font-size:9px;letter-spacing:.08em;color:#cfe0ff;text-decoration:none;
  opacity:0;pointer-events:none;transition:opacity .4s linear;
  text-shadow:0 2px 0 rgba(4,8,24,.7);
}
#surface.on{opacity:.75;pointer-events:auto}
#surface:hover{opacity:1}
#hud.above-water #meter,#hud.above-water #sceneName,#hud.above-water #surface{
  color:#2b2360;text-shadow:0 2px 0 rgba(255,255,255,.55);
}

/* ---------------------------------------------------------- cursor light */

#cursor{
  position:absolute;left:0;top:0;width:0;height:0;z-index:2;
  pointer-events:none;opacity:0;transition:opacity .4s linear;
}
#cursor.on{opacity:1}
#cursor::after{
  content:"";position:absolute;left:-130px;top:-130px;width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,236,190,.20) 0%,rgba(255,236,190,0) 68%);
}
#cursor.cone::after{
  background:radial-gradient(circle,rgba(190,232,255,.22) 0%,rgba(190,232,255,0) 62%);
}

/* ---------------------------------------------------------- mobile */

@media (max-width:759px){
  .panel,.panel.side-l,.panel.side-r,.panel.mid{
    left:4vw;right:4vw;
    top:auto;bottom:4vh;
    transform:none;
    max-width:88vw;
    width:auto;
    padding:13px 14px;
  }
  .panel .lede{font-size:17px;line-height:1.42}
  .panel .rest{font-size:14.5px;line-height:1.5}
  .panel p{margin-bottom:.55em}
  .chapter{font-size:10px;margin-bottom:6px;gap:7px}
  .stamp{font-size:7px;padding:4px 6px;margin-bottom:9px !important}
  .panel.mid.top,.panel.mid.bottom{
    left:4vw;right:4vw;transform:none;max-width:88vw;
  }
  .panel.mid.top{top:7%;bottom:auto}
  .panel.mid.bottom{top:auto;bottom:4vh}
  .panel .lede,.panel .rest{max-width:none}
  .panel.mid{text-align:left}
  .panel.mid .chapter{justify-content:flex-start}
  .panel.mid .lede,.panel.mid .rest{margin-left:0;margin-right:0}
  .panel.big .lede{font-size:23px;max-width:none}
  .panel.big .rest{font-size:17px;max-width:none}
  .wordmark{font-size:30px}
  #meter{left:auto;right:16px;top:16px;bottom:auto;font-size:12px}
  #sceneName{bottom:auto;top:20px;left:16px;transform:none;font-size:8px;text-align:left}
  #surface{right:16px;bottom:16px}
  .foot{justify-content:flex-start}
  #cursor{display:none}
}

/* ---------------------------------------------------------- reduced motion */

@media (prefers-reduced-motion:reduce){
  html:not(.forcemotion) .hint{animation:none}
  html:not(.forcemotion) .caret{display:none}
  html:not(.forcemotion) .panel{transition:none}
  html:not(.forcemotion) .rest{transition:none}
  html:not(.forcemotion) #world.wobble{filter:none}
  html:not(.forcemotion) body{transition:none}
}