@font-face {
  font-family: "AiKonomiLikeLove";
  src: url("../fonts/v2_AiKonomiLikeLove.otf") format("opentype");
  font-weight: normal;
  font-style: normal;
}

:root {
  color-scheme: light;
  --bg: #fdf6ec;
  --text: #4a3728;
  --toggle-track: #4a3728;
  --pixel: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #1e1a16;
    --text: #f1e6d8;
    --toggle-track: #f1e6d8;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 24px;
  padding: 16px;
  position: relative;
}

.bg-layer {
  position: fixed;
  inset: 0;
  background-color: var(--bg);
  z-index: -1;
  transition: background-color 0.3s ease;
}

.theme-toggle-input:checked ~ .bg-layer {
  --bg: #1e1a16;
}

.theme-toggle-input:not(:checked) ~ .bg-layer {
  --bg: #fdf6ec;
}

.theme-toggle-input:checked ~ .theme-toggle-label {
  --toggle-track: #f1e6d8;
}

.theme-toggle-input:not(:checked) ~ .theme-toggle-label {
  --toggle-track: #4a3728;
}

.theme-toggle-input:checked ~ .frame {
  --text: #f1e6d8;
}

.theme-toggle-input:not(:checked) ~ .frame {
  --text: #4a3728;
}

.theme-toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.theme-toggle-label {
  position: fixed;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 56px;
  height: 30px;
  padding: 0 6px;
  border-radius: 999px;
  border: 2px solid var(--toggle-track);
  cursor: pointer;
  z-index: 10;
}

.theme-toggle-label .icon {
  font-size: 14px;
  line-height: 1;
  color: var(--toggle-track);
}

.theme-toggle-label .ball {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--toggle-track);
  transition: transform 0.3s ease;
}

.theme-toggle-input:checked + .theme-toggle-label .ball {
  transform: translateX(26px);
}

.frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(16px, 4vw, 24px);
  padding: clamp(32px, 8vw, 70px) clamp(24px, 10vw, 100px);
  border: 4px solid var(--text);
  max-width: 90vw;
  transition: border-color 0.3s ease;
  clip-path: polygon(
    0 calc(var(--pixel) * 2),
    var(--pixel) calc(var(--pixel) * 2),
    var(--pixel) var(--pixel),
    calc(var(--pixel) * 2) var(--pixel),
    calc(var(--pixel) * 2) 0,
    calc(100% - var(--pixel) * 2) 0,
    calc(100% - var(--pixel) * 2) var(--pixel),
    calc(100% - var(--pixel)) var(--pixel),
    calc(100% - var(--pixel)) calc(var(--pixel) * 2),
    100% calc(var(--pixel) * 2),
    100% calc(100% - var(--pixel) * 2),
    calc(100% - var(--pixel)) calc(100% - var(--pixel) * 2),
    calc(100% - var(--pixel)) calc(100% - var(--pixel)),
    calc(100% - var(--pixel) * 2) calc(100% - var(--pixel)),
    calc(100% - var(--pixel) * 2) 100%,
    calc(var(--pixel) * 2) 100%,
    calc(var(--pixel) * 2) calc(100% - var(--pixel)),
    var(--pixel) calc(100% - var(--pixel)),
    var(--pixel) calc(100% - var(--pixel) * 2),
    0 calc(100% - var(--pixel) * 2)
  );
}

.fox-icon-wrap {
  position: relative;
  width: clamp(90px, 25vw, 160px);
  height: clamp(90px, 25vw, 160px);
}

.fox-icon {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.fox-icon.fox-night {
  display: none;
}

.theme-toggle-input:checked ~ .frame .fox-day {
  display: none;
}

.theme-toggle-input:checked ~ .frame .fox-night {
  display: block;
}

.under-construction {
  font-family: "AiKonomiLikeLove", sans-serif;
  font-size: clamp(1.5rem, 6vw, 2.5rem);
  color: var(--text);
  text-align: center;
  transition: color 0.3s ease;
}