/* ==========================================================
   Projects portfolio — shared stylesheet
   トップページとプロジェクト詳細ページの両方で使う共通CSS。
   色は :root のトークンで管理（ダークモード対応）。
   ========================================================== */

:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-2: #efece4;
  --ink: #1c1b19;
  --ink-2: #57534b;
  --ink-3: #8a857a;
  --line: #e2ddd2;
  --accent: #d2491f;
  --accent-ink: #ffffff;
  --focus: #2a62d8;

  --st-live: #1f8a4c;
  --st-wip: #b7791f;
  --st-done: #3d63c9;
  --st-archived: #8a857a;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(28, 27, 25, .05), 0 8px 24px -12px rgba(28, 27, 25, .18);
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Meiryo",
          system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141412;
    --surface: #1d1c1a;
    --surface-2: #26251f;
    --ink: #f1eee6;
    --ink-2: #bdb7aa;
    --ink-3: #8a857a;
    --line: #2f2d28;
    --accent: #ff7a4d;
    --accent-ink: #1c1b19;
    --focus: #7aa2ff;
    --st-live: #4cc488;
    --st-wip: #e5b25a;
    --st-done: #8aa6ff;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 28px -14px rgba(0,0,0,.7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141412; --surface: #1d1c1a; --surface-2: #26251f;
  --ink: #f1eee6; --ink-2: #bdb7aa; --ink-3: #8a857a; --line: #2f2d28;
  --accent: #ff7a4d; --accent-ink: #1c1b19; --focus: #7aa2ff;
  --st-live: #4cc488; --st-wip: #e5b25a; --st-done: #8aa6ff;
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 6px; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 10; }

/* ---------- hero ---------- */
.hero { padding: clamp(56px, 10vw, 112px) 0 40px; }
.eyebrow {
  margin: 0 0 12px;
  font: 600 13px/1 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent);
}
.hero-title {
  margin: 0;
  font-size: clamp(40px, 8vw, 84px);
  line-height: 1.02;
  letter-spacing: -.03em;
  font-weight: 800;
}
.hero-lead {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: clamp(16px, 2vw, 18px);
  color: var(--ink-2);
}
.hero-links { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 24px 0 0; }
.hero-links:empty { display: none; }
.hero-links a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); text-decoration: none; font-size: 14px; font-weight: 600;
}
.hero-links a:hover { border-color: var(--ink); }

.stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, max-content));
  gap: 8px 40px; margin: 40px 0 0; padding-top: 24px; border-top: 1px solid var(--line);
}
.stats div { min-width: 0; }
.stats dt { font-size: 12px; color: var(--ink-3); letter-spacing: .04em; }
.stats dd { margin: 2px 0 0; font: 700 22px/1.2 var(--font); font-variant-numeric: tabular-nums; }

/* ---------- toolbar ---------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-top: 16px; }
.search {
  flex: 1 1 280px; max-width: 420px;
  display: flex; align-items: center; gap: 8px;
  padding: 0 14px; height: 44px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-3);
}
.search:focus-within { border-color: var(--ink); }
.search input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  font: inherit; font-size: 15px; color: var(--ink);
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips.tags { margin-top: 12px; }
.chip {
  appearance: none; cursor: pointer;
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: transparent; color: var(--ink-2);
  font: 500 13px/1.2 var(--font);
}
.chip:hover { color: var(--ink); border-color: var(--ink-3); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chip .n { opacity: .6; margin-left: 4px; font-variant-numeric: tabular-nums; }

.result-count { margin: 24px 0 12px; font-size: 13px; color: var(--ink-3); }

/* ---------- grid / cards ---------- */
.grid {
  list-style: none; padding: 0; margin: 0 0 80px;
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
}
.card {
  position: relative; height: 100%;
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--ink-3); }
@media (prefers-reduced-motion: reduce) { .card { transition: none; } .card:hover { transform: none; } }

.thumb {
  aspect-ratio: 16 / 9; background: var(--surface-2);
  display: grid; place-items: center; overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb .mono {
  font: 800 clamp(40px, 6vw, 56px)/1 var(--font); letter-spacing: -.04em;
  color: rgba(255,255,255,.92); text-shadow: 0 2px 12px rgba(0,0,0,.15);
}

.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--ink-3); }
.card-title { margin: 0; font-size: 19px; line-height: 1.35; letter-spacing: -.01em; }
.card-title a { text-decoration: none; }
.card-title a::after { content: ""; position: absolute; inset: 0; } /* カード全体をクリック可能に */
.card-summary { margin: 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.7; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 6px; }
.tag { font: 500 12px/1 var(--mono); padding: 5px 8px; border-radius: 6px; background: var(--surface-2); color: var(--ink-2); }
.card-links { display: flex; gap: 14px; font-size: 13px; font-weight: 600; }
.card-links a { position: relative; z-index: 1; text-decoration: none; color: var(--accent); }
.card-links a:hover { text-decoration: underline; }
.featured-badge { color: var(--accent); font-weight: 700; }

.status { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.status[data-status="live"] { color: var(--st-live); }
.status[data-status="wip"] { color: var(--st-wip); }
.status[data-status="done"] { color: var(--st-done); }
.status[data-status="archived"] { color: var(--st-archived); }

.empty { text-align: center; padding: 48px 0 96px; color: var(--ink-2); }
.btn {
  appearance: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px; border: 0;
  background: var(--ink); color: var(--bg);
  font: 600 14px/1 var(--font); text-decoration: none;
}
.btn.accent { background: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }

.site-footer { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 13px; color: var(--ink-3); }
.site-footer p { margin: 0; }

/* ---------- project detail page ---------- */
.back { display: inline-block; margin-top: 32px; font-size: 14px; text-decoration: none; color: var(--ink-2); }
.back:hover { color: var(--ink); }
.detail-head { padding: 32px 0 24px; }
.detail-head h1 { margin: 8px 0 0; font-size: clamp(32px, 6vw, 56px); line-height: 1.1; letter-spacing: -.02em; }
.detail-head .lead { margin: 16px 0 0; font-size: 18px; color: var(--ink-2); max-width: 40em; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.detail-hero { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); margin: 16px 0 40px; }
.prose { max-width: 720px; padding-bottom: 80px; }
.prose h2 { margin: 48px 0 12px; font-size: 22px; letter-spacing: -.01em; }
.prose p, .prose li { color: var(--ink-2); }
.prose code { font-family: var(--mono); font-size: .9em; background: var(--surface-2); padding: 2px 6px; border-radius: 4px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; font-size: 14px; }
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; }

@media (max-width: 560px) {
  .stats { gap: 8px 24px; }
  .stats dd { font-size: 18px; }
}