:root {
  --fg: #1a1a1a;
  --bg: #f5f2ec;
  --page-bg: color-mix(in srgb, var(--bg) 92%, #000);
  --muted: #6b6b6b;
  --accent: #0071e3;
}
@media (prefers-color-scheme: dark) {
  :root { --fg: #ececec; --bg: #141414; --page-bg: color-mix(in srgb, var(--bg) 94%, #fff); --muted: #888; --accent: #409cff; }
}
* { box-sizing: border-box; }

html, body {
  margin: 0;
  font-size: 100%; /* inherit browser/OS text-size preference */
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--bg);
  color: var(--fg);
}

html {
  overflow-x: hidden;
}

.page-content {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: max(2rem, env(safe-area-inset-top));
  padding-right: max(2rem, env(safe-area-inset-right));
  padding-bottom: calc(var(--compat-h, 6.5rem) + 0.75rem);
  padding-left: max(2rem, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--page-bg) calc(100% * var(--compat-fade, 1)), var(--bg));
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
  position: relative;
  z-index: 1;
}

.page-rainbow {
  position: relative;
  min-height: 100svh;
  z-index: 10;
  background: var(--bg);
  border-bottom-left-radius: 1rem;
  border-bottom-right-radius: 1rem;
  overflow: hidden;
}

main {
  width: 100%;
  max-width: 22.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: center;
  opacity: var(--compat-fade, 1);
}

h1 {
  font-family: inherit;
  font-size: 1.791rem;
  font-weight: 600;
  margin: 0 0 0.55rem;
  letter-spacing: 0;
  text-transform: none;
}
p.tag {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.982rem;
}

.section-divider {
  height: 0.3125rem;
  border-radius: 9999px;
  background: color-mix(in srgb, var(--accent) 50%, transparent);
  margin-bottom: 1.25rem;
}

ul { list-style: none; padding: 0; margin: 0; }
li { margin: 0; }

a {
  display: block;
  padding: 0.75rem 0;
  color: var(--fg);
  text-decoration: none;
  font-size: 1.248rem;
  transition: padding 0.15s ease;
}

/* --rest is set per-element from JS so each ball idles at a different angle */
.beachball {
  display: inline-block;
  width: 1.25em;
  height: 1.25em;
  border-radius: 50%;
  margin-right: 0.55em;
  vertical-align: -0.22em;
  transform: rotate(var(--rest, 0deg));
  background:
    conic-gradient(
      #ff3b30 0deg 45deg,
      #ff9500 45deg 90deg,
      #ffcc00 90deg 135deg,
      #34c759 135deg 180deg,
      #00c7be 180deg 225deg,
      #007aff 225deg 270deg,
      #af52de 270deg 315deg,
      #ff2d55 315deg 360deg
    );
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.08);
  filter: grayscale(1);
  transition: filter 0.25s ease;
}

a:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  main a:hover { padding-left: 0.5rem; }
  main a:hover .beachball,
  main a:focus-visible .beachball { filter: grayscale(0); }
}

@media (hover: none) {
  .beachball {
    filter: grayscale(0);
    animation: beachball-spin 0.9s linear infinite;
  }
}

@keyframes beachball-spin {
  from { transform: rotate(var(--rest, 0deg)); }
  to { transform: rotate(calc(var(--rest, 0deg) + 360deg)); }
}

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

.emoji-trail {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 9999;
}
.emoji-trail span {
  position: absolute;
  font-size: 4.2rem;
  line-height: 1;
  transform: translate(-50%, -50%) scale(1) rotate(0deg);
  animation: emoji-fade 1100ms ease-out forwards;
  will-change: transform, opacity;
}
@keyframes emoji-fade {
  0%   { opacity: 1;   transform: translate(-50%, -50%) scale(1)   rotate(0deg); }
  60%  { opacity: 0.9; transform: translate(-50%, -50%) scale(1.1) rotate(20deg); }
  100% { opacity: 0;   transform: translate(-50%, -50%) scale(0.4) rotate(60deg); }
}

.compat {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 5;
  padding-top: 1.25rem;
  padding-right: max(2rem, env(safe-area-inset-right));
  padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
  padding-left: max(2rem, env(safe-area-inset-left));
  background: var(--bg);
}
.compat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: color-mix(in srgb, var(--accent) 50%, transparent);
  opacity: var(--compat-fade, 1);
}
.compat-inner {
  width: 100%;
  max-width: 22.5rem;
  margin: 0 auto;
  opacity: var(--compat-fade, 1);
}
.compat-label {
  font-size: 0.63rem;
  color: var(--muted);
  margin: 0 0 0.4rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.compat-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.compat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  padding: 0.55rem 0.9rem 0.55rem 0.7rem;
  border-radius: 6px;
  font-size: 0.693rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  -webkit-user-select: none;
  user-select: none;
}
.compat-badge svg { width: 1.5em; height: 1.5em; }
@media (hover: hover) and (pointer: fine) {
  .compat-badge { transition: border-color 0.2s ease; }
  .compat-badge:hover { border-color: var(--accent); }
}

/* rainbow stripes — absolute inside .page-rainbow, slide up from below */
.rainbow-stripe {
  position: absolute;
  top: 0;
  height: 100svh;
  width: calc(100% / 6);
  pointer-events: none;
  will-change: transform;
}

/* kiki button — centered in .page-rainbow, fades in with rainbow */
.kiki-button {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;

  display: inline-block;
  padding: clamp(1rem, 3vmin, 2.5rem) clamp(2.5rem, 7vmin, 6rem);

  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.4rem, 4vmin, 3rem);
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;

  background: #ff2d55;
  border-radius: 9999px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);

  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
}

/* Always show outline when focused via keyboard/VO even if opacity is 0 */
.kiki-button:focus-visible {
  opacity: 1;
  outline: 3px solid rgba(255, 255, 255, 0.9);
  outline-offset: 4px;
}

@media (hover: hover) and (pointer: fine) {
  .kiki-button:hover {
    background: #e8294f;
    transform: translate(-50%, -50%) scale(1.04);
    box-shadow: 0 6px 28px rgba(0, 0, 0, 0.35);
  }
}