/* ============ Colors (light = daytime lab, dark = night lab) ============ */
:root {
  --bg: #fff8ec;
  --grid-line: rgba(77, 124, 254, 0.09);
  --paper: #ffffff;
  --ink: #1f1b3d;
  --ink-soft: #57537a;
  --line: #1f1b3d;
  --shadow: #1f1b3d;
  --sky: #4d7cfe;
  --sun: #ffb020;
  --mint: #1fbf9f;
  --coral: #ff6b6b;
  --grape: #8b5cf6;
  --hl: #ffe08a;
  --chip: #fff1d6;
  --radius: 18px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #14132b;
    --grid-line: rgba(140, 160, 255, 0.07);
    --paper: #1f1e3d;
    --ink: #f3f0ff;
    --ink-soft: #b4b0d6;
    --line: #5b57a0;
    --shadow: #07061a;
    --hl: rgba(139, 92, 246, 0.55);
    --chip: #2a2850;
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --bg: #14132b;
  --grid-line: rgba(140, 160, 255, 0.07);
  --paper: #1f1e3d;
  --ink: #f3f0ff;
  --ink-soft: #b4b0d6;
  --line: #5b57a0;
  --shadow: #07061a;
  --hl: rgba(139, 92, 246, 0.55);
  --chip: #2a2850;
  color-scheme: dark;
}

/* ============ Base ============ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  /* graph paper, like a scientist's notebook */
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  font: 400 17px/1.65 Nunito, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 {
  font-family: Fredoka, 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  line-height: 1.15;
  margin: 0;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; border-radius: 8px; }

/* ============ Nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 14px 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font: 700 22px Fredoka, sans-serif;
}
.logo svg { width: 34px; height: 34px; }
.logo b { color: var(--sky); }
.nav nav { display: flex; gap: 6px; margin-left: auto; }
.nav nav a {
  padding: 6px 12px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  color: var(--ink-soft);
}
.nav nav a:hover { color: var(--ink); background: var(--chip); }
.lang {
  font: 800 14px Nunito, 'PingFang SC', sans-serif;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--shadow);
}
.lang:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--shadow); }

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 22px;
  border: 3px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
  font: 600 18px Fredoka, 'PingFang SC', sans-serif;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--shadow);
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--shadow); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--shadow); }
.btn.primary { background: var(--sun); color: #1f1b3d; }
.btn.small { padding: 8px 16px; font-size: 16px; border-width: 2px; box-shadow: 3px 3px 0 var(--shadow); }

/* ============ Hero ============ */
main { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
  gap: 40px;
  padding: 56px 0 72px;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 4px 12px;
  border: 2px dashed var(--sky);
  border-radius: 999px;
  color: var(--sky);
  font: 400 13px Silkscreen, 'PingFang SC', monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero h1 { font-size: clamp(42px, 6.4vw, 76px); font-weight: 700; }
.hero h1 .hi { display: block; margin-bottom: 8px; }
.hero h1 .sub { display: block; font-size: 0.72em; line-height: 1.25; text-wrap: balance; }
.hl {
  background: linear-gradient(transparent 60%, var(--hl) 60%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.lead { max-width: 33em; margin: 22px 0 30px; font-size: 19px; color: var(--ink-soft); }
.cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-art { position: relative; aspect-ratio: 1; max-width: 440px; width: 100%; justify-self: center; }
.flask { position: absolute; inset: 14%; width: 72%; height: 72%; overflow: visible; }
.flask-glass { fill: var(--paper); }
.flask-line { fill: none; stroke: var(--line); stroke-width: 6; stroke-linejoin: round; }
.flask-line.cap { fill: var(--sun); }
.liquid { fill: var(--mint); animation: slosh 4s ease-in-out infinite; }
.bubble { fill: #fff; opacity: 0.85; animation: rise 3s ease-in infinite; }
.b2 { animation-delay: 0.8s; } .b3 { animation-delay: 1.6s; } .b4 { animation-delay: 2.3s; }
.spark { fill: var(--sun); animation: twinkle 2.4s ease-in-out infinite; transform-origin: 160px 57px; }
.sp2 { fill: var(--coral); animation-delay: 1.2s; transform-origin: 32px 81px; }

.orbit { position: absolute; inset: 0; border: 3px dashed color-mix(in srgb, var(--sky) 40%, transparent); border-radius: 50%; animation: spin 40s linear infinite; }
.sticker {
  position: absolute;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin: -29px 0 0 -29px;
  font-size: 30px;
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: 16px;
  box-shadow: 3px 3px 0 var(--shadow);
  animation: spin 40s linear infinite reverse; /* keep stickers upright */
}
.s1 { left: 50%; top: 0; }
.s2 { left: 93.3%; top: 25%; }
.s3 { left: 93.3%; top: 75%; }
.s4 { left: 50%; top: 100%; }
.s5 { left: 6.7%; top: 75%; }
.s6 { left: 6.7%; top: 25%; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes rise {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: 0.9; }
  100% { transform: translateY(-90px); opacity: 0; }
}
@keyframes slosh { 50% { transform: translateY(-6px); } }
@keyframes twinkle { 50% { transform: scale(0.6) rotate(45deg); } }

/* ============ Sections ============ */
.section { padding: 48px 0; }
.section h2 { font-size: clamp(30px, 4vw, 42px); margin-bottom: 24px; }
.section h2::after {
  content: '';
  display: block;
  width: 64px;
  height: 8px;
  margin-top: 8px;
  border-radius: 4px;
  background: repeating-linear-gradient(90deg, var(--sky) 0 16px, var(--sun) 16px 32px);
}
.section-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.section-head h2 { margin-bottom: 0; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filters button {
  font: 800 15px Nunito, 'PingFang SC', sans-serif;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
}
.filters button:hover { background: var(--chip); }
.filters button[aria-selected='true'] { background: var(--ink); color: var(--bg); }

/* ============ Project cards ============ */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 var(--shadow);
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:not(.is-soon):hover { transform: translate(-3px, -3px) rotate(-0.4deg); box-shadow: 9px 9px 0 var(--shadow); }
.cover { display: block; aspect-ratio: 16 / 9; border-bottom: 3px solid var(--line); overflow: hidden; background: var(--chip); }
.cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.card:hover .cover img { transform: scale(1.04); }
.cover-emoji { display: grid; place-items: center; height: 100%; font-size: 64px; filter: grayscale(0.15); }
.card-body { display: flex; flex-direction: column; gap: 8px; flex: 1; padding: 18px 20px 20px; }
.card-meta { display: flex; justify-content: space-between; font-size: 13px; font-weight: 800; color: var(--ink-soft); }
.card-meta time { font-family: Silkscreen, monospace; font-weight: 400; }
.card h3 { font-size: 24px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 0; padding: 0; list-style: none; }
.tags li { padding: 2px 10px; border-radius: 999px; background: var(--chip); font-size: 13px; font-weight: 800; }
.card-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: auto; padding-top: 10px; }
.card-foot small { color: var(--ink-soft); font-size: 13px; }

.card.is-featured { grid-column: span 2; flex-direction: row; }
.card.is-featured .cover { flex: 1.35; aspect-ratio: auto; min-height: 300px; border-bottom: 0; border-right: 3px solid var(--line); }
.card.is-featured .card-body { flex: 1; padding: 24px; }
.card.is-featured h3 { font-size: 32px; }

.card.is-soon { border-style: dashed; box-shadow: none; background: color-mix(in srgb, var(--paper) 60%, transparent); }
.card.is-soon .cover { border-bottom-style: dashed; background: repeating-linear-gradient(45deg, var(--chip) 0 14px, transparent 14px 28px); }
.soon-pill {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--chip);
  font: 400 12px Silkscreen, 'PingFang SC', monospace;
  text-transform: uppercase;
}
.t-game .type { color: var(--coral); }
.t-roblox .type { color: var(--sky); }
.t-print3d .type { color: var(--grape); }
.t-story .type { color: var(--sun); }
.t-science .type { color: var(--mint); }

/* ============ About ============ */
.about-wrap { display: grid; grid-template-columns: 320px 1fr; gap: 48px; align-items: start; }
.player-card {
  position: relative;
  padding: 20px 22px 22px;
  background: linear-gradient(160deg, var(--sky), var(--grape));
  color: #fff;
  border: 3px solid var(--line);
  border-radius: 22px;
  box-shadow: 8px 8px 0 var(--shadow);
  transform: rotate(-2deg);
}
.pc-top { display: flex; justify-content: space-between; align-items: center; font-size: 13px; font-weight: 800; }
.pc-level { padding: 2px 10px; border-radius: 8px; background: var(--sun); color: #1f1b3d; font: 400 13px Silkscreen, monospace; }
.pc-avatar {
  display: grid;
  place-items: center;
  height: 150px;
  margin: 14px 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.16) radial-gradient(circle at 50% 120%, rgba(255, 255, 255, 0.35), transparent 60%);
  border: 2px solid rgba(255, 255, 255, 0.35);
}
.pc-avatar svg { width: 104px; height: 104px; --ink: #1f1b3d; }
.player-card h3 { font-size: 30px; text-align: center; margin-bottom: 12px; }
.stats { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.stats li { display: grid; grid-template-columns: 96px 1fr; align-items: center; gap: 10px; font-size: 14px; font-weight: 800; }
.stats i { height: 10px; border-radius: 6px; background: rgba(255, 255, 255, 0.25); position: relative; overflow: hidden; }
.stats i::after { content: ''; position: absolute; inset: 0; width: var(--v); background: var(--sun); border-radius: inherit; }
.pc-foot { margin: 14px 0 0; font-size: 13px; text-align: center; opacity: 0.92; }

.about-text p { margin: 0 0 16px; font-size: 18px; }
.mini { font-size: 22px; margin: 28px 0 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; margin: 0; padding: 0; }
.chips li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: 12px;
  box-shadow: 3px 3px 0 var(--shadow);
  font-size: 16px;
}
.chips li:nth-child(odd) { transform: rotate(-1.2deg); }
.chips li:nth-child(even) { transform: rotate(1deg); }
.chips span { font-size: 20px; }

/* ============ Lab log ============ */
.log { list-style: none; margin: 0; padding: 0 0 0 24px; border-left: 3px dashed var(--line); max-width: 720px; }
.log li { position: relative; padding: 0 0 22px 18px; }
.log li::before {
  content: '';
  position: absolute;
  left: -35px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--mint);
  border: 3px solid var(--line);
}
.log li:first-child::before { background: var(--sun); }
.log time { font: 400 13px Silkscreen, monospace; color: var(--sky); }
.log p { margin: 2px 0 0; font-size: 17px; }

/* ============ Footer ============ */
.footer { max-width: 1160px; margin: 40px auto 0; padding: 32px 24px 48px; text-align: center; color: var(--ink-soft); border-top: 3px dashed var(--line); }
.footer p { margin: 4px 0; }
.footer .small { font-size: 14px; }

/* ============ Phones & tablets ============ */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 24px; }
  .hero-art { max-width: 300px; order: -1; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-wrap { grid-template-columns: 1fr; gap: 36px; }
  .player-card { max-width: 340px; justify-self: center; width: 100%; }
}
@media (max-width: 640px) {
  .nav { gap: 10px; padding: 12px 16px; }
  .nav nav { display: none; }
  .lang { margin-left: auto; }
  main { padding: 0 16px; }
  .grid { grid-template-columns: 1fr; }
  .card.is-featured { grid-column: auto; flex-direction: column; }
  .card.is-featured .cover { min-height: 0; aspect-ratio: 16 / 9; border-right: 0; border-bottom: 3px solid var(--line); }
  .card.is-featured h3 { font-size: 26px; }
  .sticker { width: 46px; height: 46px; margin: -23px 0 0 -23px; font-size: 24px; }
  .lead { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}