/* ==========================================================================
   LP Gallery — 一覧サイト共通スタイル
   ※ 各LPは lp/<slug>/ 配下に独自CSSを持つ。ここは一覧サイト専用。
   ========================================================================== */

:root {
  --bg:        #ffffff;
  --bg-sub:    #f6f7f9;
  --surface:   #ffffff;
  --border:    #e4e7ec;
  --text:      #16181d;
  --text-mute: #626878;
  --accent:    #2f5cff;
  --accent-ink:#ffffff;
  --shadow:    0 1px 2px rgba(16,20,32,.04), 0 8px 24px rgba(16,20,32,.06);
  --shadow-lg: 0 2px 4px rgba(16,20,32,.06), 0 20px 48px rgba(16,20,32,.12);
  --radius:    14px;
  --maxw:      1180px;
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans",
          "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #0e1014;
    --bg-sub:    #14171d;
    --surface:   #171a21;
    --border:    #272c36;
    --text:      #eef1f6;
    --text-mute: #9aa2b2;
    --accent:    #6f8dff;
    --accent-ink:#0e1014;
    --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
    --shadow-lg: 0 2px 4px rgba(0,0,0,.5), 0 20px 48px rgba(0,0,0,.55);
  }
}
:root[data-theme="dark"] {
  --bg:#0e1014; --bg-sub:#14171d; --surface:#171a21; --border:#272c36;
  --text:#eef1f6; --text-mute:#9aa2b2; --accent:#6f8dff; --accent-ink:#0e1014;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 2px 4px rgba(0,0,0,.5), 0 20px 48px rgba(0,0,0,.55);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 20px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 16px;
  height: 62px;
}
.logo { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: .02em; }
.logo-mark {
  width: 26px; height: 26px; border-radius: 7px; flex: none;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 45%, #ff5da2));
}
.site-header nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.site-header nav a, .theme-btn {
  padding: 7px 12px; border-radius: 9px; font-size: 14px; color: var(--text-mute);
  border: 0; background: none; font-family: inherit; cursor: pointer;
}
.site-header nav a:hover, .theme-btn:hover { background: var(--bg-sub); color: var(--text); }

/* ---------- hero ---------- */
.hero { padding: 76px 0 44px; text-align: center; }
.hero .eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin: 0 0 14px;
}
.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 5.4vw, 50px);
  line-height: 1.28; font-weight: 800; letter-spacing: -.01em;
}
.hero p { margin: 0 auto; max-width: 620px; color: var(--text-mute); font-size: 16px; }
.hero .count { margin-top: 26px; font-size: 13px; color: var(--text-mute); }

/* ---------- filter ---------- */
.filters {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  padding: 8px 0 34px;
}
.chip {
  font-family: inherit; font-size: 13.5px; cursor: pointer;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-mute);
  transition: .16s ease;
}
.chip:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); color: var(--text); }
.chip[aria-pressed="true"] {
  background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600;
}

/* ---------- grid ---------- */
.grid {
  display: grid; gap: 26px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  padding-bottom: 80px;
}
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; gap: 20px; } }

.card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .22s cubic-bezier(.2,.7,.3,1), box-shadow .22s, border-color .22s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--accent) 30%, var(--border)); }
.card.is-hidden { display: none; }

.card-thumb {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
  background: linear-gradient(140deg, var(--bg-sub), color-mix(in srgb, var(--accent) 12%, var(--bg-sub)));
  border-bottom: 1px solid var(--border);
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .5s cubic-bezier(.2,.7,.3,1); }
.card:hover .card-thumb img { transform: scale(1.035); }
.card-thumb .ph {
  position: absolute; inset: 0; display: grid; place-content: center; gap: 6px;
  color: var(--text-mute); font-size: 12.5px; letter-spacing: .1em; text-align: center;
}
.card-thumb .ph b { font-size: 26px; font-weight: 800; color: color-mix(in srgb, var(--accent) 70%, var(--text-mute)); }

.badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  padding: 4px 10px; border-radius: 999px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .04em;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border); color: var(--text);
}

.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h2 { margin: 0 0 8px; font-size: 17.5px; line-height: 1.5; font-weight: 700; }
.card-body p { margin: 0 0 16px; font-size: 13.8px; line-height: 1.72; color: var(--text-mute); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; padding: 0; list-style: none; }
.tags li { font-size: 11.5px; color: var(--text-mute); background: var(--bg-sub); border-radius: 6px; padding: 3px 8px; }
.card-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.view {
  font-size: 13.5px; font-weight: 700; color: var(--accent);
  display: inline-flex; align-items: center; gap: 5px;
}
.view svg { transition: transform .2s; }
.card:hover .view svg { transform: translateX(3px); }
.meta { font-size: 12px; color: var(--text-mute); }

.empty { grid-column: 1 / -1; text-align: center; padding: 60px 0; color: var(--text-mute); font-size: 14px; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border); background: var(--bg-sub);
  padding: 34px 0; font-size: 13px; color: var(--text-mute);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}