/* ================================================================
   REI SAMPLE — Gallery Styles
   3 Themes: POP / CYBER / INORGANIC
   ================================================================ */

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { overflow-x: hidden; font-family: 'Inter', sans-serif; }
img { max-width: 100%; display: block; }

/* ================================================================
   LANDING PAGE (Mode Selector)
   ================================================================ */
.landing {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  background: #0a0a0a;
  overflow-y: auto;
}
.landing-bg { position: absolute; inset: 0; }
.landing-bg canvas { width: 100%; height: 100%; }
.landing-content {
  position: relative; z-index: 2;
  text-align: center; padding: 2rem;
}
.landing-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300; font-size: clamp(2rem, 6vw, 4rem);
  letter-spacing: 0.5em; color: #e0e0e0;
  margin-bottom: 0.5rem;
  animation: fadeInDown 1s ease forwards;
}
.landing-sub {
  font-weight: 300; font-size: 0.9rem;
  letter-spacing: 0.3em; color: #888;
  margin-bottom: 3rem; text-transform: uppercase;
  animation: fadeInDown 1s 0.3s ease both;
}

/* Mode Cards */
.mode-cards {
  display: flex; gap: 1.5rem;
  justify-content: center; flex-wrap: wrap;
  animation: fadeInUp 1s 0.5s ease both;
}
.mode-card {
  width: 200px; padding: 2rem 1.5rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px; background: rgba(255,255,255,0.03);
  cursor: pointer; transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem;
  color: #ccc; position: relative; overflow: hidden;
}
.mode-card:hover { transform: translateY(-8px) scale(1.03); }
.mode-card:active { transform: scale(0.97); }

/* POP card */
.mode-pop:hover { border-color: #ff69b4; background: rgba(255,105,180,0.08); box-shadow: 0 0 40px rgba(255,105,180,0.2); }
.mode-pop .mode-icon { font-size: 2.5rem; }
.pop-preview { font-size: 1.2rem; display: flex; gap: 4px; }
.pop-heart { color: #ff69b4; animation: popFloat 2s ease-in-out infinite; }
.pop-star { color: #ffd700; animation: popFloat 2s 0.5s ease-in-out infinite; }

/* CYBER card */
.mode-cyber:hover { border-color: #00d4ff; background: rgba(0,212,255,0.06); box-shadow: 0 0 40px rgba(0,212,255,0.2); }
.mode-cyber .mode-icon { font-size: 2.5rem; }
.cyber-preview { display: flex; gap: 3px; height: 20px; align-items: flex-end; }
.cyber-line {
  width: 4px; background: #00d4ff; border-radius: 2px;
  animation: cyberPulse 1.5s ease-in-out infinite;
}
.cyber-line:nth-child(1) { height: 60%; animation-delay: 0s; }
.cyber-line:nth-child(2) { height: 100%; animation-delay: 0.3s; }
.cyber-line:nth-child(3) { height: 40%; animation-delay: 0.6s; }

/* INORGANIC card */
.mode-inorganic:hover { border-color: #888; background: rgba(255,255,255,0.06); box-shadow: 0 0 40px rgba(255,255,255,0.1); }
.mode-inorganic .mode-icon { font-size: 2.5rem; font-family: 'JetBrains Mono', monospace; }
.inorganic-preview svg { color: #888; animation: geoSpin 10s linear infinite; }

.mode-name { font-size: 1rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; }
.mode-desc { font-size: 0.75rem; color: #888; letter-spacing: 0.1em; }

/* Landing admin link */
.landing-admin-link {
  display: inline-block; margin-top: 2rem; margin-bottom: 1rem;
  font-size: 0.75rem; letter-spacing: 0.25em;
  color: #666; text-decoration: none;
  opacity: 0.6; transition: opacity 0.3s ease;
  text-transform: uppercase;
  padding: 0.8rem 1.5rem;
  border: 1px solid #333;
  border-radius: 4px;
}
.landing-admin-link:hover { opacity: 1; color: #aaa; border-color: #666; }
/* タッチデバイス: ADMINボタンを常に見えやすく */
@media (hover: none) and (pointer: coarse) {
  .landing-admin-link {
    opacity: 0.8;
    color: #888;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Animations */
@keyframes fadeInDown { from { opacity:0; transform:translateY(-30px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeInUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
@keyframes popFloat { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-6px); } }
@keyframes cyberPulse { 0%,100% { opacity:0.4; } 50% { opacity:1; } }
@keyframes geoSpin { from { transform:rotate(0deg); } to { transform:rotate(360deg); } }

/* ================================================================
   GALLERY — Shared Layout
   ================================================================ */
.gallery { min-height: 100vh; position: relative; transition: background 0.6s ease; }
.particle-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.geo-background { position: fixed; inset: 0; z-index: 0; pointer-events: none; display: none; }

/* Edge lines (cyber only by default) */
.edge-lines { display: none; }

/* Scroll progress */
.scroll-progress {
  position: fixed; top: 0; right: 0; width: 3px; height: 0%;
  z-index: 100; transition: height 0.1s linear;
}

/* Header */
.gallery-header {
  position: relative; z-index: 10;
  text-align: center; padding: 6rem 2rem 2rem;
}
.gallery-title {
  font-size: clamp(1.5rem, 5vw, 3rem);
  letter-spacing: 0.4em; font-weight: 300;
  margin-bottom: 1rem;
}

/* Mode switch button */
.mode-switch-btn {
  position: fixed; top: 1rem; right: 1rem; z-index: 200;
  padding: 0.5rem 1rem; border: 1px solid rgba(128,128,128,0.3);
  border-radius: 6px; font-size: 0.7rem; letter-spacing: 0.15em;
  cursor: pointer; transition: all 0.3s ease;
  font-family: 'Inter', sans-serif; background: transparent;
}

/* Photo list — Panel Grid */
.photo-list {
  position: relative; z-index: 5;
  max-width: 1400px; margin: 0 auto;
  padding: 2rem 1.5rem 6rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 6px;
}

/* Photo item */
.photo-item {
  opacity: 0;
  transform: translateY(30px) scale(0.97);
  transition: opacity 0.6s cubic-bezier(0.16,1,0.3,1), transform 0.6s cubic-bezier(0.16,1,0.3,1);
  will-change: transform, opacity;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  cursor: pointer;
}
.photo-item.visible {
  opacity: 1; transform: translateY(0) scale(1);
}
.photo-item.anim-scale { transform: scale(0.88); }
.photo-item.anim-scale.visible { transform: scale(1); }
.photo-item.anim-rotate { transform: perspective(600px) rotateY(6deg) scale(0.95); }
.photo-item.anim-rotate.visible { transform: perspective(600px) rotateY(0deg) scale(1); }
.photo-item.anim-split { clip-path: inset(0 50% 0 50%); }
.photo-item.anim-split.visible { clip-path: inset(0 0 0 0); transition: clip-path 0.9s cubic-bezier(0.16,1,0.3,1), opacity 0.6s, transform 0.6s; }

.photo-wrap {
  position: relative; overflow: hidden; cursor: pointer;
  width: 100%; height: 100%;
  transition: transform 0.35s ease;
}
.photo-wrap:hover { transform: scale(1.03); }

.photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;   /* パネルにトリミングして表示 */
  display: block;
  transition: transform 0.5s ease;
}
.photo-wrap:hover .photo-img { transform: scale(1.06); }

/* ホバー時オーバーレイ */
.photo-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex; flex-direction: column; align-items: flex-start;
  justify-content: flex-end; padding: 0.85rem 0.9rem;
}
.photo-wrap:hover .photo-overlay { opacity: 1; }
.photo-meta {
  font-size: 0.78rem; letter-spacing: 0.1em;
  color: #fff; text-shadow: 0 1px 4px rgba(0,0,0,0.9);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  max-width: 100%;
  line-height: 1.4;
}
.photo-meta-expand {
  font-size: 0.65rem; letter-spacing: 0.15em; color: rgba(255,255,255,0.7);
  text-transform: uppercase; margin-top: 0.2rem;
}

/* Scroll hint */
.scroll-hint {
  position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%);
  z-index: 10; text-align: center; font-size: 0.75rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  animation: hintPulse 2s ease-in-out infinite;
  pointer-events: none; transition: opacity 0.5s ease;
}
@keyframes hintPulse { 0%,100% { opacity:0.4; } 50% { opacity:1; } }
.scroll-arrow { font-size: 1.2rem; margin-top: 0.3rem; }



/* ================================================================
   LIGHTBOX — Shared
   ================================================================ */
.lightbox {
  position: fixed; inset: 0; z-index: 1000;
  display: none; align-items: center; justify-content: center;
  opacity: 0; transition: opacity 0.4s ease;
}
.lightbox.active { display: flex; opacity: 1; }
.lightbox-backdrop {
  position: absolute; inset: 0;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.lightbox-content {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; align-items: center;
  gap: 0.8rem; max-width: 90vw;
}
.lightbox-img {
  max-width: 100%; max-height: 80vh; object-fit: contain;
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
  display: block;
  border-radius: 4px;
}
.lightbox-caption {
  font-size: 0.85rem; letter-spacing: 0.15em;
  text-align: center; opacity: 0.8;
  max-width: 80vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.lightbox-counter {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  z-index: 3; font-size: 0.7rem; letter-spacing: 0.2em;
  opacity: 0.5; pointer-events: none;
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: fixed; z-index: 3;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s ease; background: transparent;
}
.lightbox-close { top: 1.5rem; right: 1.5rem; font-size: 2rem; width: 48px; height: 48px; }
.lightbox-prev, .lightbox-next {
  top: 50%; transform: translateY(-50%);
  font-size: 2.5rem; width: 48px; height: 48px;
}
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }


/* ================================================================
   THEME: CYBER ⚡
   ================================================================ */
.theme-cyber .gallery { background: #0a0a0a; color: #e0e0e0; }
.theme-cyber .gallery-title { font-family: 'Cormorant Garamond', serif; color: #e0e0e0; }
.theme-cyber .scroll-progress { background: linear-gradient(to bottom, #00d4ff, #ff006e); box-shadow: 0 0 10px #00d4ff; }
.theme-cyber .edge-lines { display: block; }
.theme-cyber .edge-line {
  position: fixed; z-index: 1;
}
.theme-cyber .edge-top { top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, #00d4ff44, transparent); }
.theme-cyber .edge-right { top: 0; right: 0; bottom: 0; width: 1px; background: linear-gradient(180deg, transparent, #00d4ff44, transparent); }
.theme-cyber .edge-bottom { bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, #ff006e44, transparent); }
.theme-cyber .edge-left { top: 0; left: 0; bottom: 0; width: 1px; background: linear-gradient(180deg, transparent, #ff006e44, transparent); }

.theme-cyber .photo-wrap {
  border-radius: 2px; border: 1px solid rgba(0,212,255,0.15);
}
.theme-cyber .photo-wrap:hover {
  box-shadow: 0 0 25px rgba(0,212,255,0.2), inset 0 0 20px rgba(0,212,255,0.03);
}
.theme-cyber .photo-overlay { background: linear-gradient(to top, rgba(0,20,40,0.85) 0%, transparent 60%); }
.theme-cyber .photo-meta { color: #00d4ff; font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; letter-spacing: 0.15em; }

.theme-cyber .mode-switch-btn { color: #888; border-color: rgba(0,212,255,0.2); }
.theme-cyber .mode-switch-btn:hover { color: #00d4ff; border-color: #00d4ff; box-shadow: 0 0 15px rgba(0,212,255,0.2); }
.theme-cyber .scroll-hint { color: #888; }

/* Lightbox cyber */
.theme-cyber .lightbox-backdrop { background: rgba(0,0,0,0.85); }
.theme-cyber .lightbox-close { color: #e0e0e0; text-shadow: 0 0 10px #00d4ff; }
.theme-cyber .lightbox-close:hover { color: #00d4ff; }
.theme-cyber .lightbox-prev, .theme-cyber .lightbox-next { color: #e0e0e0; }
.theme-cyber .lightbox-prev:hover, .theme-cyber .lightbox-next:hover { color: #00d4ff; text-shadow: 0 0 15px #00d4ff; }
.theme-cyber .lightbox-caption { color: #00d4ff; font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; }
.theme-cyber .lightbox-counter { color: #888; font-family: 'JetBrains Mono', monospace; }

/* ================================================================
   THEME: POP 🎀
   ================================================================ */
.theme-pop .gallery {
  background: linear-gradient(135deg, #ffe4f0, #f0e0ff, #e0eaff, #ffe4f0);
  background-size: 400% 400%;
  animation: popBgShift 15s ease infinite;
  color: #4a2c6e;
}
@keyframes popBgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.theme-pop .gallery-title {
  font-family: 'Quicksand', sans-serif; font-weight: 700;
  color: #d63384; letter-spacing: 0.15em;
}
.theme-pop .scroll-progress { background: linear-gradient(to bottom, #ff69b4, #ffd700); }
.theme-pop .photo-wrap {
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(214,51,132,0.12);
}
.theme-pop .photo-wrap:hover {
  transform: scale(1.04);
  box-shadow: 0 8px 35px rgba(214,51,132,0.25);
}
.theme-pop .photo-img { border-radius: 16px; }
.theme-pop .photo-overlay { background: linear-gradient(to top, rgba(214,51,132,0.7) 0%, transparent 60%); border-radius: 16px; }
.theme-pop .photo-meta { color: #fff; font-family: 'Quicksand', sans-serif; font-weight: 700; }

.theme-pop .mode-switch-btn { color: #d63384; border-color: rgba(214,51,132,0.3); border-radius: 20px; }
.theme-pop .mode-switch-btn:hover { background: #d63384; color: #fff; }
.theme-pop .scroll-hint { color: #d63384; }

/* Lightbox pop */
.theme-pop .lightbox-backdrop { background: rgba(255,228,240,0.9); }
.theme-pop .lightbox-img { border-radius: 16px; box-shadow: 0 16px 60px rgba(214,51,132,0.2); }
.theme-pop .lightbox-close { color: #d63384; }
.theme-pop .lightbox-close:hover { color: #ff006e; transform: rotate(90deg); }
.theme-pop .lightbox-prev, .theme-pop .lightbox-next { color: #d63384; }
.theme-pop .lightbox-prev:hover, .theme-pop .lightbox-next:hover { color: #ff006e; }
.theme-pop .lightbox-caption { color: #d63384; font-family: 'Quicksand', sans-serif; font-weight: 600; }
.theme-pop .lightbox-counter { color: #d63384; opacity: 0.6; }

/* ================================================================
   THEME: INORGANIC △
   ================================================================ */
.theme-inorganic .gallery { background: #f8f8f8; color: #1a1a1a; }
.theme-inorganic .geo-background { display: block; }
.theme-inorganic .gallery-title {
  font-family: 'JetBrains Mono', monospace; font-weight: 300;
  color: #1a1a1a; letter-spacing: 0.3em; text-transform: uppercase;
}
.theme-inorganic .scroll-progress { background: #1a1a1a; }
.theme-inorganic .photo-list { gap: 2px; }
.theme-inorganic .photo-wrap {
  border-radius: 0; border: 1px solid #e0e0e0;
}
.theme-inorganic .photo-wrap:hover {
  border-color: #111;
}
.theme-inorganic .photo-img { border-radius: 0; }
.theme-inorganic .photo-overlay { background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 50%); }
.theme-inorganic .photo-meta {
  font-family: 'JetBrains Mono', monospace; font-weight: 300;
  font-size: 0.7rem; color: #e0e0e0; letter-spacing: 0.2em;
}

.theme-inorganic .mode-switch-btn {
  color: #1a1a1a; border-color: #ccc; border-radius: 0;
  font-family: 'JetBrains Mono', monospace;
}
.theme-inorganic .mode-switch-btn:hover { background: #1a1a1a; color: #f8f8f8; }
.theme-inorganic .scroll-hint { color: #aaa; font-family: 'JetBrains Mono', monospace; }

/* Lightbox inorganic */
.theme-inorganic .lightbox-backdrop { background: rgba(248,248,248,0.95); }
.theme-inorganic .lightbox-img { border: 1px solid #1a1a1a; }
.theme-inorganic .lightbox-close { color: #1a1a1a; font-family: 'JetBrains Mono', monospace; }
.theme-inorganic .lightbox-close:hover { color: #ff0000; }
.theme-inorganic .lightbox-prev, .theme-inorganic .lightbox-next { color: #1a1a1a; }
.theme-inorganic .lightbox-prev:hover, .theme-inorganic .lightbox-next:hover { color: #ff0000; }
.theme-inorganic .lightbox-caption { color: #1a1a1a; font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; }
.theme-inorganic .lightbox-counter { color: #aaa; font-family: 'JetBrains Mono', monospace; }


/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 768px) {
  .landing {
    align-items: flex-start;
    padding: 2rem 0;
  }
  .landing-content { padding: 1rem; width: 100%; }
  .mode-cards { flex-direction: column; align-items: center; }
  .mode-card { width: 80vw; max-width: 280px; }

  .gallery-header { padding: 4rem 1rem 1.5rem; }
  .photo-list {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 3px;
    padding: 0.5rem 0.5rem 4rem;
  }

  .lightbox-prev, .lightbox-next {
    top: auto; bottom: 2rem; transform: none;
    width: 56px; height: 56px; font-size: 2rem;
  }
  .lightbox-prev { left: 2rem; }
  .lightbox-next { right: 2rem; }
}

@media (max-width: 480px) {
  .gallery-title { font-size: 1.3rem; letter-spacing: 0.2em; }
  .photo-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
  }
}

/* Touch devices */
@media (hover: none) and (pointer: coarse) {
  .photo-wrap:active { transform: scale(0.97); }
  /* タッチデバイスではオーバーレイを常に表示 */
  .photo-overlay { opacity: 1 !important; }
}