/* =================================================
   Root variables
================================================= */

/* Light mode (default) */
:root {
  /* Fonts */
--font-en: "Inter", system-ui, -apple-system, sans-serif;
--font-jp: "Noto Sans JP", system-ui, -apple-system, sans-serif;


  /* Backgrounds */
  --bg-main: #faf9f7;   /* Hero / 明るい */
  --bg-sub: #f1f0ed;    /* 交互セクション */
  /* --bg-header: #c3b48a; Header */

  /* Text */
  --text-main: #3b3b3d;
  --text-sub: #505255;

  /* Accent */
  --accent: #c3b48a;
}

/* Dark mode */
.dark {
  --bg-main: #494748;
  --bg-sub: #3f3e3d;
  /* --bg-header: #c3b48a; */

  --text-main: #f7f7f7;
  --text-sub: rgba(247, 247, 247, 0.7);

  --accent: #c3b48a;
}

:root {
  /* =====================
     Button – base
  ===================== */
  --btn-radius: 999px;
  --btn-transition: 0.18s ease-out;

  /* Secondary button (ring) */
  --btn-ring-bg: rgba(255, 255, 255, 0.65);
  --btn-ring-text: #1f1f1f;
  --btn-ring-border: #1f1f1f;
  --btn-ring-hover-y: -2px;

   /* Button motion */
  --btn-move-fast: 0.12s cubic-bezier(.2,.8,.2,1);
  --btn-color-fast: 0.16s ease-out;

  /* emphasis */
  --btn-hover-y: -3px;
  --btn-hover-scale: 1.04;

  /* Primary CTA */
  --btn-cta-hover-y: -4px;
  --btn-cta-shadow: 0 10px 26px rgba(0,0,0,0.25);
}

/* Dark mode override */
.dark {
  --btn-ring-bg: var(--accent);
  --btn-ring-text: #2b2b2b;
  --btn-ring-border: rgba(255, 255, 255, 0.9);

}
/* Dark mode: shuffle button */
.dark #shuffleBtn {
  color: #1f1f1f;                      /* 中の文字色 */
  background-color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.9);
}

.dark #shuffleBtn:hover {
  background-color: rgba(255,255,255,0.95);
}



.ring-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  min-width: 55px;
  padding: 0.6rem 1.4rem;

  border-radius: 999px;
  border: 1px solid var(--btn-ring-border);

  background-color: var(--btn-ring-bg);
  color: var(--btn-ring-text);
  text-decoration: none;

  transition:
    transform var(--btn-move-fast),
    background-color var(--btn-color-fast),
    color var(--btn-color-fast),
    border-color var(--btn-color-fast),
    box-shadow var(--btn-color-fast);
}

.ring-btn:hover {
  transform:
    translateY(var(--btn-hover-y))
    scale(var(--btn-hover-scale));

  background-color: var(--accent);
  color: #1f1f1f;
  border-color: var(--accent);

  box-shadow: 0 8px 20px rgba(0,0,0,0.18);
}

.hero-cta,
.final-cta-btn {
  display: inline-block;
  padding: 0.9rem 2.4rem;

  border-radius: var(--btn-radius);
  border: 1px solid var(--accent);

  background-color: transparent;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.08em;

  transition:
    transform var(--btn-transition),
    background-color var(--btn-transition),
    box-shadow var(--btn-transition),
    color var(--btn-transition);
}

.hero-cta:hover,
.final-cta-btn:hover {
  transform: translateY(var(--btn-cta-hover-y));
  background-color: var(--accent);
  color: var(--bg-main);
  box-shadow: var(--btn-cta-shadow);
}




/* =====================
   Base
===================== */
* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-en);
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
}

.jp { 
  font-family: var(--font-jp);
  font-size: 0.7rem; 
  color: var(--text-sub);
}

/* =====================
   Global image rounding
===================== */

.work-item img,
.platform-image img,
.hero-image img {
  border-radius: 16px;
}

/* =================================================
   Background helpers
================================================= */

.bg-header {
  background-color: var(--bg-header);
}

.bg-main {
  background-color: var(--bg-main);
}

.bg-sub {
  background-color: var(--bg-sub);
}


/* =================================================
   Header / Theme toggle
================================================= */

.site-header {
  padding: 1rem 5rem;
  display: flex;
  justify-content: flex-end;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px;              /* ← 押しやすさ */
  border-radius: 50%;
  cursor: pointer;
}

.theme-toggle img {
  width: 50px;
  height: 50px;              /* ← 正円にする */
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover img {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.12);
}

.fade-up {
  opacity: 0;
  transform: translateY(24px);
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

/* =====================
   Hero
===================== */

.section-title {
  letter-spacing: 0.08em;
  font-weight: 500;
}

.hero-name {
  font-size: 2.3rem;
  line-height: 1.05;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.hero-name-en {
  display: block;
  margin: 0.06rem 0 0;   /* ← ここで距離を詰める */
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  color: var(--text-sub);
  line-height: 1.2;
}
.hero-name-jp {
  font-size: 1.8rem;
  font-weight: 500;
}

/* Hero text alignment stability */
.hero-text {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.hero-text .jp {
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.hero-image img {
  max-width: 300px;
  margin: 0 auto;
  display: block;
}

.hero-cta {
  display: inline-block;
  margin-top: 1rem;
  /* padding: 0.6rem 1.6rem; */

  border-radius: 999px;
  border: 1px solid var(--accent);

  background-color: color-mix(in srgb, var(--accent) 25%, transparent);
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: 0.08em;

  transition:
    transform var(--btn-transition),
    background-color var(--btn-transition),
    box-shadow var(--btn-transition),
    color var(--btn-transition);
}

.hero-cta:hover {
  transform: translateY(var(--btn-cta-hover-y));
  background-color: var(--accent);
  color: var(--bg-main);
  box-shadow: var(--btn-cta-shadow);
}


/* =====================
   Works
===================== */
.works {
  padding-bottom: 6rem;
}

.section-title {
  font-weight: 500;
  letter-spacing: 0.04em;
}
.section-sub {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;          /* ← 小さめ */
  letter-spacing: 0.15em;     /* ← 空気感 */
  color: var(--text-sub);
}

.jp {
  font-family: var(--font-jp);
}

.work-item {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 16px;
  background: #eee; /* ロード中の保険 */
}

.work-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.6;
  filter: grayscale(30%);
  transition:
    opacity 0.25s ease,
    filter 0.25s ease,
    object-fit 0.25s ease;
}


.work-item img:hover {
  opacity: 1;
  filter: none;
  transform: scale(1.02);
  object-fit: contain;
  
}
/* =====================
   View more
===================== */
#shuffleBtn {
margin-top: 1rem;
padding-top: 5px;
padding-left: 2.5px;
padding-right: 2.5px;
color: var(--text-sub);
}

#shuffleBtn:hover{
background-color: #f6f7eb;
}

.view-more {
  text-align: center;
  margin-top: 3rem;
}

.view-more-label {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: var(--text-sub);
  margin-bottom: 1.5rem;
}

.view-more-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}


/* =================================================
   Other Platforms
================================================= */

.other-platforms {
  padding: 4rem 0;
}

.platform-card {
  max-width: 1000px;
  margin: 0 auto 2.5rem;
}

.platform-image img {
  max-width: 300px;
  margin: 0 auto;
  display: block;
}


/* Platform Card */

.platform-card {
  max-width: 1000px;
  margin: 0 auto 2.5rem;
  padding: 2rem 1.5rem;
  
}

/* image */
.platform-image {
  text-align: center;
}

.platform-image img {
  max-width: 300px;
  width: 100%;
  height: auto;
  margin: 0 auto;
  display: block;
}

/* text */
.platform-text {
  text-box-trim: trim-start;
  text-box-edge: cap text;
  
}
.platform-text .jp {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.7rem;
  opacity: 0.7;
}

.platform-text h4 {
  margin-bottom: 0.4rem;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.platform-text p {
  margin-bottom: 1.4rem;
  font-size: 0.85rem;
  color: var(--text-sub);
}
.platform-card:hover {
  background-color: rgba(0, 0, 0, 0.03);
  border-radius: 16px;
}

.dark .platform-card:hover {
  background-color: rgba(255, 255, 255, 0.06);
}





/* =====================
   Final CTA (skeb)
===================== */

.final-cta {
  padding: 6rem 0;
}

.final-cta-title {
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.final-cta-text {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 2.5rem;
}


.final-cta-note {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-sub);
}
.final-cta-btn {
  color: var(--text-main);
}
/* =================================================
   Responsive (Global)
================================================= */

@media (max-width: 768px) {
  .platform-card {
    padding: 1.75rem 1.25rem;
  }

  .platform-image img {
    max-width: 260px;
    margin-bottom: 1.25rem;
  }
}
/* =====================
   Tablet & down (<= 1199px)
   余白調整ゾーン
===================== */
@media (max-width: 1199.98px) {
  .hero-text {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}


/* =====================
   Tablet vertical (<= 991px)
   縦並び前提
===================== */
@media (max-width: 991.98px) {

  /* ---------- Hero ---------- */
  .hero-text {
    text-align: center;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  h2.hero-role {
    margin-top: 0;
  }
  .hero-cta {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-sub {
    text-align: center;
  }

  .hero-image {
    margin-top: 2rem;
  }

  /* ---------- Works ---------- */
  .works .section-title,
  .works .section-sub {
    text-align: center;
  }

  /* ---------- Other platforms ---------- */
  .platform-text {
    text-align: center;
  }

  .platform-text .ring-btn {
    margin-left: auto;
    margin-right: auto;
  }
}


/* =====================
   Mobile (<= 767px)
===================== */
@media (max-width: 767.98px) and (hover: none) {

  .work-item img {
    opacity: 1;
    filter: none;
  }

  /* ---------- Hero ---------- */
  .hero {
    padding-top: 3.5rem;
    padding-bottom: 4rem;
  }

  .hero-image img {
    max-width: 180px;
  }

  /* ---------- Platform cards ---------- */
    .platform-card {
    margin: 0 1rem 1rem;
    padding: 1.5rem 1.25rem;
    border: 1px solid rgba(0,0,0,0.10);
    border-radius: 16px;
    background: rgba(255,255,255,0.35);
  }

  .dark .platform-card {
    border-color: rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.04);
  }

  .platform-image img {
    max-width: 260px;
    margin-bottom: 1.25rem;
  }
}