:root {
  --bg: #0f1115;
  --fg: #f4f4f5;
  --muted: #a1a1aa;
  --accent: #6ee7b7;
  --max-width: 960px;

  /* Liquid glass */
  --grid: rgba(255, 255, 255, 0.08);
  --blob-a: #10b981;
  --blob-b: #6366f1;
  --title-a: #22d3ee;
  --title-b: #6366f1;
  --title-c: #ec4899;
  --tint: rgba(255, 255, 255, 0.02);
  --edge: rgba(255, 255, 255, 0.14);
  --shadow: rgba(0, 0, 0, 0.5);
  --spring: cubic-bezier(.34, 1.56, .64, 1);

  /* Control panel */
  --panel-tint: rgba(255, 255, 255, 0.05);
  --chip-bg: rgba(255, 255, 255, 0.07);
  --chip-edge: rgba(255, 255, 255, 0.12);
  --chip-highlight: rgba(255, 255, 255, 0.22);
  --chip-on-bg: rgba(255, 255, 255, 0.92);
  --chip-on-fg: #0f1115;
  --track: rgba(255, 255, 255, 0.1);
  --fill-a: #67e8f9;
  --fill-b: #a78bfa;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ---------- Backdrop: detail for the glass to refract ---------- */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
}

.blob {
  position: absolute;
  width: 38vmax;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(56px);
  opacity: 0.45;
  animation: drift 18s ease-in-out infinite alternate;
}

.blob.a { background: var(--blob-a); top: -14%; left: -10%; }
.blob.b { background: var(--blob-b); bottom: -18%; right: -8%; animation-duration: 23s; animation-delay: -7s; }

@keyframes drift {
  to { transform: translate(10vw, 8vh) scale(1.15); }
}

.wrap {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero {
  position: relative;
  width: 100%;
  height: clamp(320px, 60vh, 520px);
  display: grid;
  place-items: center;
  margin-bottom: 24px;
}

.name {
  margin: 0;
  font-size: clamp(4rem, 16vw, 11rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  background: linear-gradient(100deg, var(--title-a), var(--title-b) 50%, var(--title-c));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  user-select: none;
}

/* ---------- Liquid glass (refraction set up by glass.js) ---------- */
.glass {
  position: relative;
  background: var(--tint);
  box-shadow:
    0 18px 50px -12px var(--shadow),
    inset 0 0 0 1px var(--edge);
}

/* Specular rim, generated per element from the bezel normals */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--spec, none) center / 100% 100% no-repeat;
  opacity: var(--spec-opacity, 0.9);
  pointer-events: none;
}

.lens {
  --lens-size: calc(clamp(88px, 24vw, 210px) * var(--lens-scale, 1));
  position: absolute;
  top: 0;
  left: 0;
  width: var(--lens-size);
  height: var(--lens-size);
  border-radius: 50%;
  cursor: grab;
  touch-action: none;
  box-shadow:
    var(--lens-shadow, 0 18px 50px -12px var(--shadow)),
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 0 0 1px var(--edge);
  /* border-radius stays instant: the refraction map is built from the final shape */
  transition: scale 0.45s var(--spring), box-shadow 0.3s ease, background-color 0.3s ease;
}

.lens[data-shape="squircle"] { border-radius: 30%; }
.lens[data-shape="pill"] { width: calc(var(--lens-size) * 1.6); border-radius: 999px; }

.lens.is-grabbed {
  cursor: grabbing;
  scale: 1.12;
}

/* ---------- Glass customisation panel ---------- */
.panel {
  width: min(640px, 100%);
  margin: 0 0 48px;
  padding: 24px;
  border-radius: 32px;
  text-align: left;
  background: var(--panel-tint);
  box-shadow:
    0 30px 80px -24px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -1px 0 rgba(255, 255, 255, 0.06),
    inset 0 0 0 1px var(--edge),
    inset 0 0 40px rgba(255, 255, 255, 0.04);
}

.panel > * {
  position: relative;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.panel-head h2 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.group {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.group:last-child {
  margin-bottom: 0;
}

.group legend {
  padding: 0;
  margin-bottom: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.group-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0 32px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Native radios, visually replaced by the span that follows */
.chip,
.swatch {
  position: relative;
}

.chip input,
.swatch input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.chip span,
.chip-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 0.85rem;
  color: var(--fg);
  background: var(--chip-bg);
  box-shadow:
    inset 0 1px 0 var(--chip-highlight),
    inset 0 0 0 1px var(--chip-edge),
    0 6px 16px -8px var(--shadow);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, scale 0.3s var(--spring);
}

.chip span:hover,
.chip-button:hover {
  scale: 1.04;
}

.chip input:checked + span {
  color: var(--chip-on-fg);
  background: var(--chip-on-bg);
}

.chip input:focus-visible + span,
.swatch input:focus-visible + span,
.chip-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.shape-icon {
  width: 14px;
  height: 14px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.shape-icon.squircle { border-radius: 30%; }
.shape-icon.pill { width: 22px; border-radius: 999px; }

/* Tint swatches: little glass tiles */
.swatch span {
  display: block;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.7), transparent 45%),
    var(--sw);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 0 0 1px rgba(255, 255, 255, 0.25),
    0 8px 18px -8px var(--sw-glow, var(--shadow));
  cursor: pointer;
  transition: scale 0.3s var(--spring), box-shadow 0.2s ease;
}

.swatch span:hover { scale: 1.08; }

.swatch input:checked + span {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    0 0 0 2px var(--bg),
    0 0 0 4px var(--fg);
}

.sw-none   { --sw: linear-gradient(135deg, transparent 45%, #f43f5e 45%, #f43f5e 55%, transparent 55%), rgba(127, 127, 127, 0.18); }
.sw-frost  { --sw: linear-gradient(135deg, #f8fafc, #cbd5e1); }
.sw-aqua   { --sw: linear-gradient(135deg, #67e8f9, #0891b2); --sw-glow: #22d3ee; }
.sw-violet { --sw: linear-gradient(135deg, #c4b5fd, #7c3aed); --sw-glow: #8b5cf6; }
.sw-peach  { --sw: linear-gradient(135deg, #fdba74, #f43f5e); --sw-glow: #fb923c; }
.sw-mint   { --sw: linear-gradient(135deg, #6ee7b7, #0d9488); --sw-glow: #34d399; }

/* Sliders: glassy track with gradient fill */
.sliders {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px 24px;
}

.slider {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
}

.slider span {
  display: flex;
  justify-content: space-between;
}

.slider output {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.slider input {
  --fill: 50%;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 24px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.slider input::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: 999px;
  background:
    linear-gradient(90deg, var(--fill-a), var(--fill-b)) 0 0 / var(--fill) 100% no-repeat,
    var(--track);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.slider input::-moz-range-track {
  height: 8px;
  border-radius: 999px;
  background: var(--track);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.slider input::-moz-range-progress {
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--fill-a), var(--fill-b));
}

.slider input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 26px;
  height: 18px;
  margin-top: -5px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35), inset 0 -1px 0 rgba(0, 0, 0, 0.12);
  transition: scale 0.3s var(--spring);
}

.slider input::-moz-range-thumb {
  width: 26px;
  height: 18px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35), inset 0 -1px 0 rgba(0, 0, 0, 0.12);
}

.slider input:active::-webkit-slider-thumb {
  scale: 1.2;
}

.slider input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 999px;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.bio {
  margin: 0 0 32px;
  line-height: 1.6;
  color: var(--fg);
}

.bio p {
  margin: 0;
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

.links a {
  color: var(--fg);
  text-decoration: none;
  border: 1px solid #2a2d34;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.links a:hover,
.links a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.footer {
  position: relative;
  z-index: 1;
  padding: 16px 24px;
  text-align: center;
}

.footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

@media (prefers-reduced-motion: reduce) {
  .blob { animation: none; }
}

/* Light mode fallback for users who prefer it */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --fg: #1a1a1a;
    --muted: #6b7280;
    --accent: #059669;
    --grid: rgba(15, 23, 42, 0.08);
    --blob-a: #6ee7b7;
    --blob-b: #a5b4fc;
    --title-a: #0891b2;
    --title-b: #4f46e5;
    --title-c: #db2777;
    --tint: rgba(255, 255, 255, 0.15);
    --edge: rgba(255, 255, 255, 0.7);
    --shadow: rgba(15, 23, 42, 0.18);
    --panel-tint: rgba(255, 255, 255, 0.4);
    --chip-bg: rgba(255, 255, 255, 0.6);
    --chip-edge: rgba(15, 23, 42, 0.06);
    --chip-highlight: rgba(255, 255, 255, 0.95);
    --chip-on-bg: #111827;
    --chip-on-fg: #ffffff;
    --track: rgba(15, 23, 42, 0.1);
    --fill-a: #22d3ee;
    --fill-b: #8b5cf6;
  }
  .links a {
    border-color: #e5e7eb;
  }
}