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

:root {
  --bg: #050214;
  --surface: #0a0429;
  --surface2: #140847;
  --text: #e0d8ff;
  --text-dim: #8b7ad6;
  --accent: #00f0ff;
  --accent2: #ff0055;
  --border: rgba(0, 240, 255, 0.3);
  --glow: rgba(255, 0, 85, 0.6);
  --font-mono: 'Press Start 2P', 'Courier New', monospace;
  --font-header: 'Orbitron', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(
    to bottom,
    rgba(255,255,255,0),
    rgba(255,255,255,0) 50%,
    rgba(0,0,0,0.15) 50%,
    rgba(0,0,0,0.15)
  );
  background-size: 100% 4px;
  z-index: 9999;
  pointer-events: none;
}

/* ── Header ── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2.5rem;
  background: rgba(7, 7, 15, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

#site-header.scrolled {
  background: rgba(7, 7, 15, 0.95);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  color: var(--accent);
  font-size: 1.1rem;
}

.logo-text {
  font-family: var(--font-header);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-shadow: 0 0 8px var(--accent);
}

nav {
  display: flex;
  gap: 2.5rem;
}

nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  transition: color 0.2s;
}

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

/* ── Hero ── */
#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 5rem;
  pointer-events: none;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  line-height: 1.5;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.4rem 0.8rem;
  margin-bottom: 1.5rem;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.4), inset 0 0 10px rgba(0, 240, 255, 0.4);
}

.hero-content h1 {
  font-family: var(--font-header);
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.05em;
  color: #fff;
  text-shadow: 0 0 10px var(--accent), 0 0 20px var(--accent), 0 0 40px var(--accent2), 0 0 80px var(--accent2);
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  letter-spacing: 0.06em;
}

.hero-cta {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  background: transparent;
  border: 2px solid var(--accent2);
  color: var(--accent2);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  pointer-events: auto;
  transition: all 0.3s;
  box-shadow: 0 0 15px rgba(255, 0, 85, 0.4), inset 0 0 15px rgba(255, 0, 85, 0.4);
  text-shadow: 0 0 8px var(--accent2);
}

.hero-cta:hover {
  background: var(--accent2);
  color: #fff;
  box-shadow: 0 0 40px rgba(255, 0, 85, 0.8), inset 0 0 20px rgba(255, 255, 255, 0.5);
  text-shadow: none;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--text-dim);
  z-index: 2;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ── Sections ── */
.section {
  padding: 7rem 0;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

.section-title {
  font-family: var(--font-header);
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  text-shadow: 0 0 10px var(--accent);
}

.section-title::before {
  content: '// ';
  color: var(--accent);
}

/* ── Collection ── */
.section-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.5rem;
}

/* ── Console Card ── */
.console-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.console-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 12px 50px var(--glow);
}

.card-canvas-wrapper {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #0a0a1a;
  position: relative;
  overflow: hidden;
}

.card-canvas-wrapper canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}

.card-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
}

.card-info {
  padding: 1.2rem 1.4rem;
}

.card-year {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.card-name {
  font-family: var(--font-header);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.4rem;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.card-maker {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.card-cta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  color: #fff;
  text-align: center;
  padding: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  transform: translateY(100%);
  transition: transform 0.25s;
}

.console-card:hover .card-cta {
  transform: translateY(0);
}

/* ── Viewer Overlay ── */
#viewer-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0, 0, 0, 0.97);
  display: flex;
  align-items: stretch;
  transition: opacity 0.3s;
}

#viewer-overlay.hidden {
  display: none;
}

#viewer-container {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 360px;
  position: relative;
}

#viewer-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#viewer-close {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 600;
  background: rgba(13, 13, 28, 0.8);
  border: 1px solid var(--border);
  color: var(--text);
  width: 2.8rem;
  height: 2.8rem;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}

#viewer-close:hover {
  border-color: var(--accent2);
  color: var(--accent2);
}

/* info-handle: デスクトップでは非表示 */
.info-handle {
  display: none;
}

#viewer-info {
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.info-scroll {
  padding: 2.5rem 2rem;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.info-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 1.2rem;
}

#info-name {
  font-family: var(--font-header);
  font-size: 1.75rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 10px var(--accent);
}

#info-name-en {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 1.8rem;
}

.info-meta {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-bottom: 1.8rem;
  padding: 1.1rem;
  background: var(--bg);
  border: 1px solid var(--border);
}

.meta-label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 0.2rem;
}

.meta-value {
  font-size: 0.9rem;
  color: var(--text);
}

#info-desc {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

/* ── Trivia ── */
.trivia-section {
  margin-bottom: 1.5rem;
}

.trivia-title {
  font-size: 0.82rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.8rem;
  letter-spacing: 0.05em;
}

.trivia-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.trivia-item {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.7;
  padding: 0.7rem 0.9rem;
  border-left: 2px solid var(--accent);
  background: rgba(0, 240, 255, 0.04);
}

.viewer-hint {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  padding: 0.7rem;
  text-align: center;
  margin-top: auto;
}

/* ── Footer ── */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-family: var(--font-mono);
  font-weight: bold;
  color: var(--accent);
  letter-spacing: 0.12em;
  font-size: 0.9rem;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  /* ビューアー: キャンバスが全画面、情報パネルがボトムシートとして重なる */
  #viewer-container {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    position: relative;
  }

  #viewer-canvas {
    position: absolute;
    inset: 0;
    width: 100% !important;
    height: 100% !important;
  }

  /* ボトムシート */
  #viewer-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 58px;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
  }

  #viewer-info.info-expanded {
    max-height: 62vh;
  }

  /* ハンドル: モバイルで表示 */
  .info-handle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.2rem;
    height: 58px;
    flex-shrink: 0;
    cursor: pointer;
    user-select: none;
  }

  .info-handle-name {
    font-family: var(--font-header);
    font-size: 0.9rem;
    color: #fff;
    text-shadow: 0 0 8px var(--accent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    margin-right: 1rem;
  }

  .info-toggle-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--accent);
    font-size: 0.7rem;
    padding: 0.35rem 0.7rem;
    cursor: pointer;
    white-space: nowrap;
    transition: border-color 0.2s;
  }

  .toggle-arrow {
    display: inline-block;
    transition: transform 0.35s ease;
  }

  #viewer-info.info-expanded .toggle-arrow {
    transform: rotate(180deg);
  }

  /* スクロールエリア */
  .info-scroll {
    padding: 1.2rem 1.5rem 1.5rem;
    max-height: calc(62vh - 58px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  #info-name {
    font-size: 1.3rem;
  }
}

@media (max-width: 640px) {
  #hero {
    align-items: flex-end;
    padding-bottom: 5vh;
  }

  .hero-content {
    padding: 0 1.5rem;
  }

  .hero-content h1 {
    font-size: 2.4rem;
  }

  nav {
    display: none;
  }

  #site-header {
    padding: 1rem 1.5rem;
  }

  .section-inner {
    padding: 0 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }
}