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

:root {
  --pad: clamp(1.5rem, 4vw, 3.5rem);
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: #000;
  color: #fff;
  font-family: "Helvetica Neue", Helvetica, Arial, "Hiragino Kaku Gothic ProN", sans-serif;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.overlay {
  position: fixed;
  inset: 0;
  padding: var(--pad);
  pointer-events: none;
}

.overlay a,
.overlay button {
  pointer-events: auto;
}

.mobile-menu-toggle {
  display: none;
}

.motion-wake {
  display: none;
}

/* --- 名前とハンドル（左上） ------------------------------------------------ */
/* 起動アニメーション完了後（body.ready付与時）にフェードイン */
h1 {
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  font-weight: 300;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 1.8s ease, letter-spacing 1.8s ease;
}

body.ready h1 {
  opacity: 1;
  letter-spacing: 0.35em;
}

.role {
  margin-top: 0.8em;
  font-size: clamp(0.68rem, 1.1vw, 0.8rem);
  font-weight: 300;
  letter-spacing: 0.18em;
  opacity: 0;
  transition: opacity 0.4s ease;
}

body.ready .role {
  opacity: 0.85;
  transition: opacity 1.8s ease 0.6s;
}

/* --- ナビ（X / Instagram / Work を横一列） ---------------------------------- */
/* デスクトップ: 右上。モバイル: 右上のMENUから展開（メディアクエリ参照） */
.menu {
  position: absolute;
  top: calc(var(--pad) + 0.4em);
  right: var(--pad);
  display: flex;
  align-items: baseline;
  gap: 2.4rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

body.ready .menu {
  opacity: 1;
  transition: opacity 1.8s ease 0.6s;
}

.menu a,
.menu button {
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
  font-size: clamp(0.7rem, 1.2vw, 0.82rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  position: relative;
  display: inline-block;
  opacity: 0.5;
  transition: opacity 0.45s ease;
  -webkit-tap-highlight-color: transparent;
}

/* Workは行き先が内側にある主導線なので、ほんの少しだけ明るく */
.menu .work-toggle {
  opacity: 0.65;
}

/* ホバー: 細い下線が左からすっと引かれ、離れると右へ抜ける */
.menu a::after,
.menu button::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.5em;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.menu a:hover,
.menu button:hover {
  opacity: 1;
}

.menu a:hover::after,
.menu button:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

/* --- Workパネル -------------------------------------------------------------- */
/* 暗転しない。像の溶解（main.js側）が遷移そのもので、
   蠢く線の上にテキストだけが浮かぶ。どこをクリックしても閉じる */
.work-panel {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, visibility 0.6s;
}

.work-panel.open {
  opacity: 1;
  visibility: visible;
  transition-delay: 0.45s; /* 溶解が進んでから文字が現れる */
}

.work-inner {
  text-align: center;
  padding: 3rem 4rem;
  /* カオス化した線の上でも読めるよう、文字の周辺だけ静かに沈める */
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0));
}

.work-inner h2 {
  font-size: clamp(1rem, 2.2vw, 1.6rem);
  font-weight: 300;
  letter-spacing: 0.4em;
  text-transform: uppercase;
}

.work-inner p {
  margin-top: 1.2em;
  font-size: clamp(0.75rem, 1.3vw, 0.9rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  opacity: 0.5;
}

/* --- モバイル ----------------------------------------------------------------- */
/* ナビは右上へ畳む。下端を空けて、像の胴体が画面外へ見切れる余地を作る */
@media (max-width: 640px) {
  .mobile-menu-toggle {
    position: absolute;
    top: calc(var(--pad) + 0.18rem);
    right: var(--pad);
    display: inline-block;
    padding: 0.35rem 0 0.35rem 0.55rem;
    background: none;
    border: 0;
    color: #fff;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.68rem;
    font-weight: 300;
    letter-spacing: 0.24em;
    line-height: 1;
    opacity: 0;
    text-transform: uppercase;
    transition: opacity 0.45s ease, transform 0.45s ease;
    -webkit-tap-highlight-color: transparent;
  }

  body.ready .mobile-menu-toggle {
    opacity: 0.58;
    transition: opacity 1.8s ease 0.6s, transform 0.45s ease;
  }

  .mobile-menu-toggle[aria-expanded="true"] {
    opacity: 1;
  }

  .motion-wake {
    position: absolute;
    top: 16vh;
    left: 50%;
    display: inline-block;
    padding: 0.45rem 0.6rem;
    background: none;
    border: 0;
    color: #fff;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.76rem;
    font-weight: 300;
    letter-spacing: 0.24em;
    line-height: 1;
    opacity: 0;
    transform: translateX(-50%);
    text-transform: uppercase;
    transition: opacity 0.8s ease, transform 0.8s ease, visibility 0.8s;
    visibility: hidden;
    -webkit-tap-highlight-color: transparent;
  }

  body.wake-ready .motion-wake {
    opacity: 0.95;
    visibility: visible;
    transition-delay: 1.1s;
  }

  body.motion-awake .motion-wake,
  body.motion-unavailable .motion-wake {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -0.35rem);
    visibility: hidden;
    transition-delay: 0s;
  }

  .menu {
    top: calc(var(--pad) + 1.9rem);
    right: var(--pad);
    left: auto;
    bottom: auto;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.35rem);
    transition: opacity 0.35s ease, transform 0.35s ease;
  }

  body.ready .menu {
    opacity: 0;
    transition: opacity 0.35s ease, transform 0.35s ease;
  }

  body.ready .menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .menu a,
  .menu button {
    font-size: 0.68rem;
    padding: 0.2rem 0 0.2rem 0.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  h1,
  .role,
  .menu,
  .mobile-menu-toggle,
  .motion-wake,
  .menu a,
  .menu button,
  .menu a::after,
  .menu button::after,
  .work-panel {
    transition: none;
  }
}