/* ============================================
   AREA 2 — The Underground Billboard
   (META広告運用) — PS2 Case Design
   concrete-jungle.jp
   Depends on: tokens.css
   ============================================ */

.billboard {
  background-color: var(--color-bg-primary);
  position: relative;
  padding-top: 0;
  padding-bottom: 0;
}

/* Subway tile pattern */
.billboard::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.03) 0px,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 60px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.03) 0px,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 60px
    );
  pointer-events: none;
  opacity: 0.5;
}

.billboard__content {
  padding: var(--space-section) var(--space-xl);
  max-width: var(--container-width);
  margin: 0 auto;
}

/* --- Header --- */
.billboard__header {
  margin-bottom: var(--space-xl);
  text-align: left;
}

.billboard__header span {
  display: block;
  margin-bottom: var(--space-sm);
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
}

.billboard__header h2 {
  margin-bottom: var(--space-sm);
}

/* --- PS2 Case Wall (Grid) --- */
.billboard__wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  position: relative;
}

/* ============================================
   PS2 CASE BODY
   ============================================ */
.billboard__poster {
  position: relative;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.billboard__poster:hover {
  transform: translateY(-8px);
}

/* ケース全体 */
.billboard__poster-inner {
  padding: 0;
  position: relative;
  overflow: hidden;
  /* PS2ケースの半透明プラスチック感 */
  background-color: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(4px);
  /* 左側なしの黒い外枠（パッケージケースの背表紙側） */
  border-top: 4px solid #111;
  border-right: 4px solid #111;
  border-bottom: 4px solid #111;
  border-left: none;
  /* 右側のみ角丸 */
  border-radius: 0 16px 16px 0;
  box-shadow:
    15px 15px 40px rgba(0, 0, 0, 0.6),
    inset -2px -2px 10px rgba(255, 255, 255, 0.05),
    inset 2px 2px 15px rgba(255, 255, 255, 0.08);
}

/* ホログラム光沢（虹色） — Area_03 風 */
.billboard__poster-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.35) 0%,
    rgba(255, 255, 255, 0) 20%,
    rgba(0, 255, 255, 0.06) 40%,
    rgba(255, 0, 255, 0.06) 55%,
    rgba(255, 255, 0, 0.04) 70%,
    rgba(255, 255, 255, 0) 80%,
    rgba(255, 255, 255, 0.12) 100%
  );
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 10;
}

/* ============================================
   PS2 BLACK TOP BAND
   ============================================ */
.billboard__ps2-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background-color: #0a0a0a;
  border-bottom: 2px solid #222;
  position: relative;
  z-index: 2;
}

.billboard__ps2-brand {
  font-family: 'Zrnic', 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #f0f0f0;
  letter-spacing: 0.08em;
  text-transform: none;
  line-height: 1;
}

/* PS2風: CとJを少し大きく表示 */
.billboard__ps2-cap {
  font-size: 1.35rem;
  vertical-align: baseline;
}

.billboard__ps2-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  opacity: 0.9;
}

/* ============================================
   PACKAGE IMAGE (CENTER AREA)
   ============================================ */
.billboard__poster-artwork {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.billboard__poster-artwork img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ============================================
   LABEL CONTENT (BOTTOM)
   ============================================ */
.billboard__poster-content {
  background-color: #111;
  background-image: none;
  padding: var(--space-md) var(--space-md);
  position: relative;
  color: #f0f0f0;
  z-index: 2;
  border-top: 1px solid #222;
}

/* カラーバーを各ポスターの色で表示 */
.billboard__poster-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}
.billboard__poster:nth-child(1) .billboard__poster-content::before { background-image: linear-gradient(90deg, var(--color-neon-pink), #ff66b2); }
.billboard__poster:nth-child(2) .billboard__poster-content::before { background-image: linear-gradient(90deg, var(--color-neon-cyan), #66ffff); }
.billboard__poster:nth-child(3) .billboard__poster-content::before { background-image: linear-gradient(90deg, var(--color-neon-purple), #b266ff); }

/* --- Sticker Badges --- */
.billboard__sticker {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-neon-pink);
  color: var(--color-bg-primary);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.billboard__sticker--cyan { background-color: var(--color-neon-cyan); }
.billboard__sticker--purple { background-color: var(--color-neon-purple); }

.billboard__poster-content h3 {
  margin-bottom: var(--space-sm);
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 700;
  text-shadow: none;
}

.billboard__poster-content p {
  color: #aaa;
  font-size: var(--fs-small);
  line-height: var(--lh-relaxed);
}