:root {
  --void: #000;
  --green: #39ff14;
  --green-dim: #1a8f0a;
  --green-hi: #c8ff6a;
  --ink: #e8e8e8;
  --mute: #5a5a5a;
  --track: #070907;
  --bar-h: 26px;
  --cat-w: min(72vw, 340px);
  --cat-h: calc(var(--cat-w) * 351 / 480);
  --pad: 24px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  background: var(--void);
  color: var(--ink);
  min-height: 100%;
  min-height: 100dvh;
}

html {
  background: #000;
}

body {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

body.is-page {
  overflow: auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: #111;
  color: var(--green);
  padding: 8px 12px;
  z-index: 20;
}
.skip:focus {
  left: 8px;
}

/* ---------- wait scene ---------- */

.scene {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12vh var(--pad) 18vh;
  position: relative;
}

h1.wordmark,
a.wordmark,
.wordmark {
  font-family: Syne, "IBM Plex Mono", sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  letter-spacing: 0.22em;
  line-height: 1;
  text-transform: lowercase;
  color: #f4f4f4;
  margin: 0 0 8vh;
  text-shadow:
    0 0 18px rgba(255, 255, 255, 0.18),
    0 0 40px rgba(57, 255, 20, 0.12);
}
.wordmark span {
  color: var(--green);
  text-shadow: 0 0 14px rgba(57, 255, 20, 0.7);
}

.stage {
  width: min(92vw, 980px);
  position: relative;
  height: calc(var(--cat-h) + var(--bar-h) + 8px);
  overflow: visible;
}

.sparks {
  position: absolute;
  inset: -80px -120px -40px -40px;
  width: calc(100% + 160px);
  height: calc(100% + 120px);
  pointer-events: none;
  z-index: 4;
}

.track {
  position: absolute;
  left: 3%;
  right: 8%;
  bottom: 0;
  height: var(--bar-h);
  border-radius: 999px;
  background:
    linear-gradient(180deg, #101510 0%, #050605 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 -1px 0 rgba(0, 0, 0, 0.8),
    0 0 0 1px #142014,
    0 0 28px rgba(57, 255, 20, 0.08);
  overflow: visible;
  z-index: 2;
}

.track::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.65);
  pointer-events: none;
  z-index: 3;
}

.fill {
  position: absolute;
  left: 1px;
  top: 1px;
  bottom: 1px;
  width: 0%;
  border-radius: 999px;
  background:
    linear-gradient(
      180deg,
      #d8ff9a 0%,
      #7cff3a 18%,
      var(--green) 42%,
      #2ad00f 70%,
      #148208 100%
    );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -2px 4px rgba(8, 60, 0, 0.45),
    0 0 14px rgba(57, 255, 20, 0.45),
    0 0 36px rgba(57, 255, 20, 0.18);
  overflow: hidden;
  z-index: 1;
  min-width: 0;
}

.fill .sheen {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 0%,
    transparent 40%,
    rgba(255, 255, 255, 0.22) 50%,
    transparent 60%,
    transparent 100%
  );
  background-size: 220% 100%;
  animation: sheen 2.4s ease-in-out infinite;
  mix-blend-mode: screen;
}

@keyframes sheen {
  0% { background-position: 120% 0; }
  100% { background-position: -40% 0; }
}

.head {
  --x: 0px;
  position: absolute;
  left: var(--x);
  top: 50%;
  width: 0;
  height: 0;
  transform: translate(-50%, -50%);
  z-index: 5;
  pointer-events: none;
  filter: saturate(1.25);
}

.head .core {
  position: absolute;
  left: -7px;
  top: -7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  box-shadow:
    0 0 6px 3px #fff,
    0 0 18px 8px rgba(255, 255, 255, 0.95),
    0 0 36px 14px rgba(200, 255, 255, 0.55);
}

.head .bloom {
  position: absolute;
  left: -70px;
  top: -70px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 255, 255, 0.55) 12%,
    rgba(180, 255, 255, 0.18) 28%,
    transparent 68%
  );
  mix-blend-mode: screen;
}

.head .prism {
  position: absolute;
  left: -130px;
  top: -130px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    #ffffff,
    #ff4d6d,
    #ffd166,
    #7cff6b,
    #5ce1ff,
    #c77dff,
    #ffffff
  );
  -webkit-mask: radial-gradient(circle, #000 0 18%, transparent 62%);
          mask: radial-gradient(circle, #000 0 18%, transparent 62%);
  mix-blend-mode: screen;
  opacity: 0.88;
  filter: blur(10px) saturate(1.6);
  animation: prism-spin 5.5s linear infinite;
}

.head .flare {
  position: absolute;
  left: -160px;
  top: -7px;
  width: 320px;
  height: 14px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 80, 160, 0.45),
    #fff 48%,
    rgba(80, 220, 255, 0.5),
    transparent
  );
  filter: blur(3px);
  mix-blend-mode: screen;
  opacity: 0.85;
  animation: flare 2.8s ease-in-out infinite alternate;
}

.head .rays {
  position: absolute;
  left: -150px;
  top: -150px;
  width: 300px;
  height: 300px;
  background: repeating-conic-gradient(
    from 8deg,
    rgba(255, 255, 255, 0.55) 0deg 0.6deg,
    transparent 0.6deg 18deg
  );
  -webkit-mask: radial-gradient(circle, #000 8%, transparent 55%);
          mask: radial-gradient(circle, #000 8%, transparent 55%);
  mix-blend-mode: screen;
  opacity: 0.55;
  animation: prism-spin 9s linear infinite reverse;
  filter: blur(0.4px);
}

@keyframes prism-spin {
  to { transform: rotate(360deg); }
}

@keyframes flare {
  from { transform: scaleX(0.86); opacity: 0.55; }
  to { transform: scaleX(1.12); opacity: 1; }
}

.head.is-struck .core {
  box-shadow:
    0 0 8px 4px #fff,
    0 0 22px 10px #fff,
    0 0 40px 16px rgba(255, 120, 220, 0.7),
    0 0 70px 24px rgba(80, 220, 255, 0.45);
  animation: struck 0.12s steps(2) infinite;
}

.head.is-struck .prism {
  animation-duration: 1.2s;
  filter: blur(8px) saturate(2);
}

@keyframes struck {
  from { transform: translateX(-1px); }
  to { transform: translateX(1px); }
}

.cat {
  position: absolute;
  bottom: -18px;
  left: 0;
  width: var(--cat-w);
  height: var(--cat-h);
  background-repeat: no-repeat;
  background-size: calc(var(--cat-w) * 6) var(--cat-h);
  background-position: 0 0;
  image-rendering: auto;
  z-index: 6;
  pointer-events: none;
  transform: translateX(-120%);
  will-change: transform, background-position;
  filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.18));
}

.cat.is-walk {
  animation: cat-walk 0.62s steps(6) infinite;
}

.cat.is-up,
.cat.is-down {
  animation: none;
  background-size: var(--cat-w) var(--cat-h);
  background-position: 0 0;
}

@keyframes cat-walk {
  to { background-position: calc(var(--cat-w) * -6) 0; }
}

.status {
  margin: 7vh 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: lowercase;
  color: #9aa09a;
  min-height: 1.2em;
  text-align: center;
}

.pct {
  margin: 10px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--green);
  text-shadow: 0 0 12px rgba(57, 255, 20, 0.45);
  font-variant-numeric: tabular-nums;
}

.hint {
  position: absolute;
  bottom: 28px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  color: #2a2a2a;
}

.hint a {
  color: #3a3a3a;
  text-decoration: none;
}
.hint a:hover {
  color: var(--green);
}

body.is-shake .scene {
  animation: shake 0.28s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-3px); }
  40%, 60% { transform: translateX(3px); }
}

/* ---------- inner pages ---------- */

body.is-page {
  overflow: auto;
}

.page {
  max-width: 40rem;
  margin: 0 auto;
  padding: 12vh 24px 16vh;
}

.page .wordmark {
  margin-bottom: 1.4rem;
  font-size: 1.2rem;
  letter-spacing: 0.18em;
}

.page a.wordmark {
  text-decoration: none;
  color: inherit;
}

.page h1 {
  font-family: Syne, sans-serif;
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 0.04em;
  margin: 0 0 1rem;
}

.page p,
.page li {
  color: #c8c8c8;
  line-height: 1.65;
  font-size: 0.92rem;
}

.page h2 {
  font-family: Syne, sans-serif;
  font-size: 1.05rem;
  margin: 2.2rem 0 0.6rem;
  color: var(--green);
  letter-spacing: 0.06em;
}

.page a {
  color: var(--green);
}

.page footer {
  margin-top: 4rem;
  color: #444;
  font-size: 0.75rem;
}

noscript {
  display: block;
  text-align: center;
  color: var(--green);
  padding: 2rem;
}

@media (max-width: 640px) {
  :root {
    --cat-w: min(88vw, 300px);
    --bar-h: 22px;
  }
  .head .prism,
  .head .rays {
    transform: scale(0.78);
  }
  .wordmark {
    margin-bottom: 6vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cat.is-walk,
  .fill .sheen,
  .head .prism,
  .head .rays,
  .head .flare {
    animation: none !important;
  }
}