/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:          #08080e;
  --c-surface:     #0f0f1a;
  --c-surface-2:   #161626;
  --c-card:        #121220;
  --c-card-hover:  #1a1a30;
  --c-accent:      #e63946;
  --c-accent-alt:  #8b5cf6;
  --c-glow:        rgba(230, 57, 70, 0.25);
  --c-text:        #e8eaf0;
  --c-text-muted:  #6b7280;
  --c-border:      rgba(255,255,255,0.07);
  --c-gold:        #f59e0b;
  --radius:        12px;
  --shadow-hover:  0 8px 40px rgba(230,57,70,0.2), 0 4px 24px rgba(0,0,0,0.6);
  --trans:         all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Noto Sans JP', system-ui, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-surface-2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-accent); }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 8, 14, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 62px;
  max-width: 1400px;
  margin: 0 auto;
  gap: 16px;
}

.logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  white-space: nowrap;
  background: linear-gradient(120deg, #ff4d5a 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  gap: 2px;
  align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex-shrink: 1;
}
.nav::-webkit-scrollbar { display: none; }

.nav-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--c-text-muted);
  padding: 6px 11px;
  border-radius: 6px;
  white-space: nowrap;
  transition: var(--trans);
}
.nav-link:hover, .nav-link.active {
  color: var(--c-text);
  background: var(--c-surface-2);
}
.nav-link.hot { color: var(--c-accent); }
.nav-link.hot:hover { background: rgba(230, 57, 70, 0.1); }

/* ===== CONTAINER ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
}
.main { padding-top: 32px; padding-bottom: 80px; }

/* ===== BANNER ===== */
.banner-horizontal {
  margin-bottom: 36px;
  display: flex;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius);
}

/* ===== HERO ===== */
.hero {
  text-align: center;
  padding: 88px 24px 64px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(230,57,70,0.14) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(230,57,70,0.3), transparent);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  background: rgba(230, 57, 70, 0.08);
  border: 1px solid rgba(230, 57, 70, 0.25);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
  background: linear-gradient(170deg, #ffffff 40%, rgba(255,255,255,0.45) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1rem;
  color: var(--c-text-muted);
  line-height: 1.75;
  max-width: 460px;
  margin: 0 auto;
}

/* ===== SECTION TITLE ===== */
.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
}
.section-title::before {
  content: '';
  display: block;
  width: 3px;
  height: 18px;
  background: linear-gradient(180deg, var(--c-accent), var(--c-accent-alt));
  border-radius: 2px;
  flex-shrink: 0;
}

/* ===== CATEGORY GRID ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 56px;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 36px 20px;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: var(--trans);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(230,57,70,0.08) 0%, transparent 70%);
  opacity: 0;
  transition: var(--trans);
}
.category-card:hover { transform: translateY(-5px); border-color: rgba(230,57,70,0.4); box-shadow: var(--shadow-hover); }
.category-card:hover::before { opacity: 1; }

.category-card .cat-icon { font-size: 2.4rem; line-height: 1; }
.category-card .cat-label { font-size: 0.88rem; font-weight: 600; text-align: center; line-height: 1.5; color: var(--c-text); }
.category-card .cat-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--c-accent);
  background: rgba(230,57,70,0.1);
  border: 1px solid rgba(230,57,70,0.2);
  padding: 2px 10px;
  border-radius: 100px;
}

/* ===== PAGE HEADER (category page) ===== */
.page-header {
  padding: 40px 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--c-border);
}
.page-header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.page-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
}
.page-sub {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  margin-top: 6px;
}
.sort-bar { display: flex; gap: 6px; }
.sort-btn {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text-muted);
  cursor: pointer;
  transition: var(--trans);
}
.sort-btn:hover, .sort-btn.active {
  border-color: rgba(230,57,70,0.4);
  color: var(--c-text);
  background: var(--c-surface-2);
}

/* ===== PRODUCT GRID ===== */
#product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}

/* ===== PRODUCT CARD ===== */
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--trans);
  position: relative;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(230,57,70,0.45);
  box-shadow: var(--shadow-hover);
}

.card-img-wrap {
  position: relative;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: var(--c-surface);
  flex-shrink: 0;
}
.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.product-card:hover .card-img-wrap img { transform: scale(1.06); }

.card-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 5px;
  line-height: 1;
}
.badge-sale { background: var(--c-accent); color: #fff; }

.card-discount {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--c-accent);
  background: rgba(10, 8, 14, 0.82);
  border: 1px solid rgba(230,57,70,0.4);
  padding: 3px 7px;
  border-radius: 5px;
  backdrop-filter: blur(4px);
}

.card-body {
  padding: 11px 12px 13px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}
.card-title {
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--c-text);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.card-actress {
  font-size: 0.73rem;
  color: var(--c-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-price {
  margin-top: auto;
  padding-top: 8px;
  display: flex;
  align-items: baseline;
  gap: 7px;
  flex-wrap: wrap;
}
.price-now {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--c-accent);
}
.price-was {
  font-size: 0.72rem;
  color: var(--c-text-muted);
  text-decoration: line-through;
}

/* ===== SKELETON ===== */
.skeleton {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.sk-img {
  aspect-ratio: 2/3;
  background: linear-gradient(90deg, var(--c-surface) 25%, var(--c-surface-2) 50%, var(--c-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
.sk-body { padding: 11px 12px; display: flex; flex-direction: column; gap: 8px; }
.sk-line {
  height: 9px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--c-surface) 25%, var(--c-surface-2) 50%, var(--c-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
.sk-line.w75 { width: 75%; }
.sk-line.w50 { width: 50%; }

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== SENTINEL / LOADER ===== */
#load-sentinel {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.spinner {
  width: 28px;
  height: 28px;
  border: 2.5px solid var(--c-border);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.end-msg { font-size: 0.82rem; color: var(--c-text-muted); }

/* ===== FOOTER ===== */
.footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 36px 0;
  text-align: center;
}
.footer p { font-size: 0.8rem; color: var(--c-text-muted); line-height: 2.2; }
.credit { margin-top: 4px; }
.credit-link { color: var(--c-accent); }
.credit-link:hover { text-decoration: underline; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-container { padding: 0 16px; }
  .container { padding: 0 16px; }
  .nav-link { font-size: 0.75rem; padding: 5px 8px; }
  .hero { padding: 60px 16px 44px; }
  .category-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  #product-grid { grid-template-columns: repeat(auto-fill, minmax(145px, 1fr)); gap: 10px; }
}
@media (max-width: 440px) {
  #product-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .card-body { padding: 9px; }
}