:root {
  --bg: #F5F5F2;
  --text: #17171C;
  --accent: #5F54FE;
  --live: #17B857;
  --sub: #6E6E76;
  --card-bg: #FFFFFF;
  --card-border: #E3E3DE;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

.dotfont {
  font-family: "DotGothic16", monospace;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--card-border);
  background: var(--bg);
}

.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.logo {
  font-family: "DotGothic16", monospace;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--text);
  flex-shrink: 0;
}

.logo-accent {
  color: var(--accent);
}

.x-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--sub);
  padding: 6px 10px;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.x-link:hover {
  color: var(--text);
  background: #ECECE8;
}

.x-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Hero ---------- */

.hero {
  padding: 36px 24px 28px;
}

.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.hero-tagline {
  margin: 0 0 22px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-family: "DotGothic16", monospace;
  font-size: 30px;
  line-height: 1;
  color: var(--text);
}

.stat-value.stat-live {
  color: var(--live);
  font-size: 22px;
}

.stat-label {
  font-size: 12px;
  color: var(--sub);
}

.search-wrap {
  max-width: 420px;
}

#searchInput {
  width: 100%;
  padding: 11px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#searchInput::placeholder {
  color: var(--sub);
}

#searchInput:focus-visible,
#searchInput:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(95, 84, 254, 0.14);
}

/* ---------- Tabs ---------- */

.tabs {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 28px;
  border-bottom: 1px solid var(--card-border);
  overflow-x: auto;
}

.tab {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  color: var(--sub);
  padding: 12px 2px 10px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab:hover {
  color: var(--text);
}

.tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tab.active {
  color: var(--text);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

.tab-count {
  font-size: 11px;
  color: var(--sub);
  background: #ECECE8;
  border-radius: 999px;
  padding: 1px 7px;
}

.tab.active .tab-count {
  color: var(--accent);
  background: rgba(95, 84, 254, 0.12);
}

/* ---------- Grid / Cards ---------- */

.main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  min-height: 240px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    gap: 28px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 14px 16px;
  }
  .logo {
    font-size: 17px;
  }
  .x-link {
    font-size: 11px;
    gap: 4px;
    padding: 4px 8px;
  }
  .hero {
    padding: 28px 16px 22px;
  }
  .tabs {
    padding: 0 16px;
    gap: 18px;
  }
  .main {
    padding: 24px 16px 48px;
  }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(23, 23, 28, 0.09);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card-thumb-wrap {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #ECECE8;
  overflow: hidden;
}

.card-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-fallback {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-weight: 700;
  font-size: 44px;
}

.thumb-fallback[data-category="tool"] {
  background: #E7E4FE;
  color: var(--accent);
}

.thumb-fallback[data-category="game"] {
  background: #FCEBD6;
  color: #B4611A;
}

.thumb-fallback[data-category="site"] {
  background: #DEF3E4;
  color: #148A45;
}

.thumb-fallback[data-category="slide"] {
  background: #DCEEFB;
  color: #1D6FB8;
}

.card-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-no {
  font-family: "DotGothic16", monospace;
  font-size: 13px;
  color: var(--sub);
  letter-spacing: 0.02em;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--live);
  animation: pulse 2.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@media (prefers-reduced-motion: reduce) {
  .status-dot {
    animation: none;
  }
}

.card-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}

.card-desc {
  margin: 0;
  font-size: 13px;
  color: var(--sub);
  line-height: 1.6;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.tag {
  font-size: 11px;
  color: var(--sub);
  background: #F0F0EC;
  border-radius: 999px;
  padding: 3px 9px;
}

.card-open {
  position: absolute;
  right: 14px;
  bottom: 14px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 4px 10px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}

.card:hover .card-open,
.card:focus-visible .card-open {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  color: var(--sub);
  font-size: 14px;
  padding: 60px 20px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 22px 24px;
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 12px;
  color: var(--sub);
}