:root {
  --bg: #fffdf9;
  --paper: #fffefb;
  --ink: #2b2723;
  --ink-soft: #6b625a;
  --accent: #c47a1c;
  --accent-soft: #f0a850;
  --border: rgba(43, 39, 35, 0.12);
  --card: rgba(255, 253, 247, 0.78);
  --card-hover: rgba(255, 253, 247, 0.94);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.18);
  --shadow-lg: 0 12px 30px rgba(67, 53, 30, 0.14), 0 2px 8px rgba(67, 53, 30, 0.06);
}

* { box-sizing: border-box; }

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

body {
  min-height: 100vh;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 62%, #faf7ef 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo",
               "Malgun Gothic", "맑은 고딕", Roboto, "Helvetica Neue", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.page {
  max-width: 820px;
  margin: 0 auto;
  padding: 18px 16px 24px;
}

/* ---------- Top Nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 252, 246, 0.9);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid rgba(43, 39, 35, 0.08);
  box-shadow: 0 6px 18px rgba(43, 39, 35, 0.04);
}
.topnav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.topnav-inner.is-brand-hidden {
  justify-content: center;
}
.topnav-inner.is-brand-hidden .nav-links {
  justify-content: center;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #2b2723;
  font-size: 16px;
}
.brand:hover { color: var(--accent); }
.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  flex: 1;
  flex-wrap: wrap;
}
.nav-links a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  color: rgba(43, 39, 35, 0.78);
  font-size: 14px;
  transition: background 160ms ease, color 160ms ease;
}
.nav-links a:hover {
  background: rgba(43, 39, 35, 0.08);
  color: var(--ink);
}
.nav-links a.is-active {
  background: var(--accent);
  color: #fff;
}

/* ---------- Paper container ----------
   background.jpg is a photographic 720x601 image (a blank page from the
   owner's 25-year-old notebook). We pin the max width to its natural width
   so it never up-scales and never distorts. */
.paper {
  position: relative;
  width: min(100%, 720px);
  margin: 0 auto;
  aspect-ratio: 720 / 601;
  background-image: url("../photo/background.jpg");
  background-repeat: no-repeat;
  background-position: top center;
  background-size: 100% auto;
  background-color: var(--paper);
  border-radius: 0;
  border: 1px solid rgba(43, 39, 35, 0.05);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.paper::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.05) 38%,
    rgba(255, 255, 255, 0.16) 64%,
    rgba(255, 255, 255, 0.36) 100%);
  pointer-events: none;
}
.paper-inner {
  position: relative;
  z-index: 1;
  height: 100%;
  padding: 16px 20px 18px;
  overflow-y: auto;
}

/* ---------- Hero ---------- */
.hero {
  padding: 8px 4px 4px;
}
.hero h1 {
  margin: 0 0 6px;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.hero p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

/* ---------- Section ---------- */
.section { margin-top: 8px; }
.section-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.section-title-social { margin-top: 14px; }

/* ---------- Search ---------- */
.search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  box-shadow: var(--shadow-sm);
}
.search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(196, 122, 28, 0.18);
}
.search input {
  flex: 1;
  border: 0;
  background: transparent;
  outline: none;
  font: inherit;
  color: var(--ink);
}
.search input::placeholder { color: var(--ink-soft); }
.search-icon {
  width: 16px;
  height: 16px;
  color: var(--ink-soft);
  flex: none;
}
.search-meta {
  margin-top: 8px;
  font-size: 12px;
  color: var(--ink-soft);
}

/* ---------- Card grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 14px;
}
.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  min-height: 84px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 140ms ease, background 140ms ease,
              box-shadow 140ms ease, border-color 140ms ease;
  box-shadow: var(--shadow-sm);
}
.card:hover {
  transform: translateY(-2px);
  background: var(--card-hover);
  border-color: rgba(196, 122, 28, 0.4);
  box-shadow: var(--shadow-md);
  color: var(--ink);
}
.card-title {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.005em;
}
.card-keywords {
  font-size: 11.5px;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.card-keywords span {
  background: rgba(43, 39, 35, 0.06);
  padding: 1px 7px;
  border-radius: 999px;
}
.card.is-hidden { display: none; }

.empty {
  padding: 32px;
  text-align: center;
  color: var(--ink-soft);
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: rgba(255, 253, 247, 0.5);
}

/* ---------- Game page ---------- */
.game-page .page {
  max-width: 1240px;
  padding: 24px 20px 32px;
}

.game-page .paper {
  width: 100%;
  max-width: none;
  aspect-ratio: auto;
  background-image: none;
  background: linear-gradient(180deg, #fffefb 0%, #fffaf1 100%);
  border-radius: 28px;
  border: 1px solid rgba(43, 39, 35, 0.08);
  overflow: visible;
}

.game-page .paper::after {
  display: none;
}

.game-page .paper-inner {
  height: auto;
  overflow: visible;
  padding: 28px 30px 30px;
}

.hero-game {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
  gap: 18px;
  align-items: end;
  padding: 4px 2px 10px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-game .hero-copy p:last-child {
  max-width: 52ch;
  font-size: 15px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(43, 39, 35, 0.08);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-1px);
}

.stat-card:focus-visible {
  outline: 2px solid rgba(56, 189, 248, 0.7);
  outline-offset: 2px;
}

.stat-card.is-active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(129, 140, 248, 0.18));
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.25);
}

.stat-card strong {
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1;
}

.stat-card span {
  font-size: 12px;
  color: var(--ink-soft);
}

.browse-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.9fr);
  gap: 16px;
  align-items: start;
  margin-top: 14px;
}

.browse-search,
.browse-filters {
  padding: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(43, 39, 35, 0.08);
  border-radius: 22px;
  box-shadow: var(--shadow-sm);
}

.browse-panel .section-title {
  margin-bottom: 10px;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(43, 39, 35, 0.1);
  background: rgba(255, 253, 247, 0.9);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.filter-chip strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 7px;
  border-radius: 999px;
  background: rgba(43, 39, 35, 0.08);
  font-size: 11px;
}

.filter-chip:hover {
  transform: translateY(-1px);
  border-color: rgba(196, 122, 28, 0.35);
  box-shadow: var(--shadow-sm);
}

.filter-chip.is-active {
  background: rgba(196, 122, 28, 0.12);
  border-color: rgba(196, 122, 28, 0.45);
  color: #8e560c;
}

.filter-chip.is-active strong {
  background: var(--accent);
  color: #fff;
}

.section-results {
  margin-top: 18px;
}

.results-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
}

.results-title {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: -0.01em;
}

.grid-game {
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.game-page .card {
  min-height: 190px;
  gap: 12px;
  padding: 18px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 249, 238, 0.95) 100%);
  border-color: rgba(43, 39, 35, 0.08);
}

.game-page .card:hover {
  transform: translateY(-4px);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.card-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(196, 122, 28, 0.12);
  color: #8e560c;
  font-size: 11px;
  font-weight: 700;
}

.card-path {
  font-size: 11px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 55%;
}

.game-page .card-title {
  font-size: 18px;
}

.card-desc {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.game-page .card-keywords {
  margin-top: auto;
}

.card-footer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
}

.game-page .empty {
  margin-top: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
}

/* ---------- Index landing ---------- */
.landing {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(150px, 0.55fr);
  gap: 12px;
  align-items: start;
}
.landing-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
@media (max-width: 760px) {
  .landing { grid-template-columns: 1fr; }
}
.nav-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.nav-card {
  display: block;
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  min-height: 72px;
  transition: transform 160ms ease, box-shadow 160ms ease,
              border-color 160ms ease, background 160ms ease;
}
.nav-card:hover {
  transform: translateY(-3px);
  background: var(--card-hover);
  border-color: rgba(196, 122, 28, 0.4);
  box-shadow: var(--shadow-md);
  color: var(--ink);
}
.nav-card h3 {
  margin: 0 0 2px;
  font-size: 14px;
  letter-spacing: -0.01em;
}
.nav-card p {
  margin: 0;
  font-size: 11.5px;
  line-height: 1.35;
  color: var(--ink-soft);
}

.landing-photo {
  display: flex;
  justify-content: center;
  padding-top: 4px;
}
.polaroid {
  background: #fff;
  padding: 10px 10px 22px;
  border-radius: 4px;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
  transform: rotate(-1.5deg);
  display: inline-block;
  max-width: 176px;
}
.polaroid img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}
.polaroid figcaption {
  margin-top: 8px;
  text-align: center;
  font-size: 11px;
  color: #666;
  letter-spacing: 0.04em;
}

.social {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-top: 0;
}
.social a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 8px;
  border-radius: 999px;
  background: rgba(43, 39, 35, 0.08);
  font-size: 11px;
  font-weight: 500;
  transition: background 160ms ease, color 160ms ease;
}
.social a:hover {
  background: var(--accent);
  color: #fff;
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 14px;
  text-align: right;
  font-size: 12px;
  color: rgba(43, 39, 35, 0.62);
  padding: 0 4px;
}
.footer a { color: inherit; }
.footer a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .paper-inner { padding: 14px 12px; }
  .hero { padding: 10px 2px 6px; }
  .topnav-inner { gap: 12px; }
  .nav-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .social { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .landing-photo { justify-content: flex-start; }
  .polaroid { max-width: 180px; }

  .game-page .page {
    padding: 18px 12px 24px;
  }

  .game-page .paper-inner {
    padding: 18px 16px 20px;
  }

  .hero-game,
  .browse-panel {
    grid-template-columns: 1fr;
  }

  .grid-game {
    grid-template-columns: 1fr;
  }

  .card-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-path {
    max-width: 100%;
  }
}

@media (max-width: 420px) {
  .nav-cards,
  .social {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .filter-chips {
    gap: 8px;
  }

  .filter-chip {
    width: 100%;
    justify-content: space-between;
  }
}