:root {
  color-scheme: light dark;
  --color-bg: #fbf7f0;
  --color-surface: #fffdf9;
  --color-text: #2a2521;
  --color-muted: #6c6157;
  --color-line: #e4dacb;
  --color-accent: #a4482f;
  --color-accent-text: #fffdf9;
  --color-thumbnail: #f1e9dc;
  --font-serif: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", serif;
  --font-sans: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1e1b18;
    --color-surface: #292521;
    --color-text: #f1eae0;
    --color-muted: #b8ad9f;
    --color-line: #453e36;
    --color-accent: #e09a80;
    --color-accent-text: #2a1a13;
    --color-thumbnail: #35302a;
  }
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.8;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

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

.site-header,
main,
.site-footer {
  width: min(100% - 32px, 1040px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px;
  border-bottom: 1px solid var(--color-line);
}

.wordmark {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 20px;
  font-size: 0.875rem;
}

.site-header nav a {
  color: var(--color-muted);
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--color-accent);
}

.hero {
  padding-block: clamp(56px, 11vw, 112px);
}

.hero-label {
  margin-bottom: 16px;
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 7vw, 4.25rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero-lead {
  max-width: 34em;
  margin-top: 24px;
  color: var(--color-muted);
  font-size: 1.0625rem;
}

.section {
  padding-block: 48px;
  border-top: 1px solid var(--color-line);
  scroll-margin-top: 16px;
}

.section h2 {
  margin-bottom: 28px;
  font-family: var(--font-serif);
  font-size: 1.625rem;
  font-weight: 600;
}

.works-status {
  color: var(--color-muted);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 24px;
}

.work-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 12px;
}

.work-thumbnail {
  aspect-ratio: 16 / 9;
  background: var(--color-thumbnail);
}

.work-thumbnail img {
  display: block;
  width: 100%;
  height: 100%;
  padding: 20px;
  object-fit: contain;
}

.work-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
}

.work-body h3 {
  font-size: 1.125rem;
  line-height: 1.5;
}

.work-summary {
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-list li {
  padding: 2px 10px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-muted);
  font-size: 0.75rem;
}

.work-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: auto;
}

.work-action,
.button-link {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 8px;
  background: var(--color-accent);
  color: var(--color-accent-text);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s;
}

.work-action:hover,
.button-link:hover {
  opacity: 0.85;
}

.work-guide {
  color: var(--color-accent);
  font-size: 0.875rem;
}

.profile > div {
  display: grid;
  gap: 16px;
  max-width: 40em;
}

.profile-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
}

.text-link {
  color: var(--color-accent);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 28px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 0.875rem;
}

.footer-nav a {
  text-decoration: none;
}

.footer-nav a:hover,
.footer-nav a[aria-current="page"] {
  color: var(--color-accent);
}

/* サイトについて・プライバシーポリシーなどの文章のページ */
.page {
  max-width: 44em;
  padding-block: clamp(40px, 8vw, 80px);
}

.page h1 {
  margin-bottom: 24px;
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.4;
}

.page section {
  margin-top: 40px;
}

.page h2 {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
}

.page p + p {
  margin-top: 12px;
}

.page section ul {
  display: grid;
  gap: 8px;
  padding-left: 1.5em;
  list-style: disc;
}

.info-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 24px;
  margin: 0;
}

.info-list dt {
  color: var(--color-muted);
}

.info-list dd {
  margin: 0;
}

.page-updated {
  margin-top: 48px;
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* ---------- 見出しの粒子演出（assets/js/hero-particles.js） ---------- */
.hero {
  position: relative;
}

.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 本物の文字は残したまま透明にし、canvas の粒子だけを見せる */
.hero h1.is-particle {
  color: transparent;
}

@media print {
  .hero-particles {
    display: none;
  }

  .hero h1.is-particle {
    color: inherit;
  }
}

/* ---------- 作品の絞り込み（assets/js/main.js） ---------- */
.works-toolbar {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.works-toolbar[hidden] {
  display: none;
}

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

.filter-button,
.tag-button {
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: transparent;
  color: var(--color-muted);
  font: inherit;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background-color 0.15s;
}

.filter-button {
  padding: 4px 14px;
  font-size: 0.875rem;
}

.tag-button {
  padding: 2px 10px;
  font-size: 0.75rem;
  line-height: inherit;
}

.filter-button:hover,
.tag-button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-button[aria-pressed="true"],
.tag-button[aria-pressed="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-text);
}

.filter-button:focus-visible,
.tag-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ボタンを入れるタグは、枠をボタンの側に持たせる */
.tag-list li.has-button {
  padding: 0;
  border: 0;
}

.works-count {
  color: var(--color-muted);
  font-size: 0.8125rem;
}

.work-card[hidden] {
  display: none;
}

/* 絞り込みで並びが変わるときのアニメーション（View Transitions API） */
.work-card {
  view-transition-class: work-card;
}

::view-transition-group(*) {
  animation-duration: 0.4s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
}

::view-transition-new(.work-card):only-child {
  animation: work-card-in 0.35s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

::view-transition-old(.work-card):only-child {
  animation: work-card-out 0.25s ease-in both;
}

@keyframes work-card-in {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
}

@keyframes work-card-out {
  to {
    opacity: 0;
    transform: scale(0.92);
  }
}

/* ---------- 作品カードの 3D チルト（assets/js/card-tilt.js） ---------- */
.work-card {
  position: relative;
  transform: perspective(900px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.5s;
}

.work-card.is-tilting {
  box-shadow: 0 20px 40px -24px rgb(0 0 0 / 0.45);
  transition: transform 0.1s linear, box-shadow 0.2s;
}

/* カーソルの位置に光が当たっているように見せる */
.work-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at var(--shine-x, 50%) var(--shine-y, 50%),
    rgb(255 255 255 / 0.55),
    rgb(255 255 255 / 0) 60%
  );
  mix-blend-mode: soft-light;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.work-card.is-tilting::after {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .work-card {
    transform: none;
    transition: none;
  }

  .work-card::after {
    display: none;
  }
}

/* ---------- 404 ページのミニゲーム（assets/js/game-404.js） ---------- */
.not-found-lead {
  margin-bottom: 24px;
}

.game {
  margin-top: 56px;
}

.game-help {
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.game-canvas {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin-top: 20px;
  border: 1px solid var(--color-line);
  border-radius: 12px;
  background: var(--color-surface);
  /* 指でバーを動かすとき、画面がスクロールしないようにする */
  touch-action: none;
  cursor: pointer;
}

.game-canvas:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.game-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 16px;
}

.game-button {
  border: 1px solid var(--color-accent);
  border-radius: 8px;
  background: transparent;
  color: var(--color-accent);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 7px 18px;
  cursor: pointer;
}

.game-button:hover {
  background: var(--color-accent);
  color: var(--color-accent-text);
}

.game-button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.game-status {
  color: var(--color-muted);
  font-size: 0.875rem;
}