/* 道具棚 / Dougudana Tools — 共通スタイル(依存ゼロ・トークン駆動) */

:root {
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --surface-2: #F0F1EC;
  --ink: #1C242E;
  --muted: #5B6672;
  --faint: #8B949D;
  --line: #DDE0DA;
  --accent: #2F5AA8;
  --accent-ink: #274B8C;
  --accent-soft: rgba(47, 90, 168, 0.10);
  --ok: #2E7D4F;
  --ok-bg: rgba(46, 125, 79, 0.10);
  --warn-bg: #FFF6E0;
  --warn-line: #E3C87A;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181E;
    --surface: #1C222B;
    --surface-2: #232B36;
    --ink: #E7E6E1;
    --muted: #9AA4AE;
    --faint: #6E7883;
    --line: #303A46;
    --accent: #7FA7E8;
    --accent-ink: #A2C0F0;
    --accent-soft: rgba(127, 167, 232, 0.14);
    --ok: #6FBF8E;
    --ok-bg: rgba(111, 191, 142, 0.12);
    --warn-bg: #2E2A1C;
    --warn-line: #6E5F2E;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.7rem; line-height: 1.4; margin: 8px 0 6px; }
h2 { font-size: 1.2rem; margin: 40px 0 10px; padding-left: 10px; border-left: 4px solid var(--accent); }
h3 { font-size: 1.02rem; margin: 24px 0 8px; }
p { margin: 0 0 1em; }
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
ul, ol { padding-left: 1.4em; }
li { margin-bottom: 4px; }
code { background: var(--surface-2); padding: 1px 6px; border-radius: 4px; font-size: 0.9em; }
.lede { color: var(--muted); margin-bottom: 20px; }
.meta-updated { color: var(--faint); font-size: 0.82rem; margin-top: 32px; }

/* header / footer */
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { position: fixed; left: 8px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner {
  max-width: 760px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--ink); }
.site-nav { display: flex; gap: 14px; flex: 1; }
.site-nav a { text-decoration: none; color: var(--muted); font-size: 0.92rem; }
.site-nav a:hover { color: var(--accent); }
.lang-switch { font-size: 0.85rem; }
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; background: var(--surface); }
.footer-inner { max-width: 760px; margin: 0 auto; padding: 20px 16px; font-size: 0.85rem; color: var(--muted); }
.footer-links a { color: var(--muted); margin-right: 14px; }
.footer-note { color: var(--faint); }
.footer-copy { color: var(--faint); }

/* home */
.hero { padding: 18px 0 6px; }
.hero h1 { font-size: 1.9rem; margin-bottom: 4px; }
.hero p { color: var(--muted); }
.cat-title { font-size: 1.05rem; color: var(--accent-ink); margin: 30px 0 10px; border: none; padding: 0; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tool-card {
  display: block; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 16px; text-decoration: none; color: var(--ink);
}
.tool-card:hover { border-color: var(--accent); }
.tool-card b { display: block; margin-bottom: 4px; color: var(--accent-ink); }
.tool-card span { font-size: 0.85rem; color: var(--muted); line-height: 1.6; display: block; }
.article-list { list-style: none; padding: 0; }
.article-list li { margin-bottom: 8px; }
.article-list .date { color: var(--faint); font-size: 0.82rem; margin-right: 8px; }

/* tool UI */
.tool-ui {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 18px 0 28px;
}
.field { margin-bottom: 14px; }
.field > label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 4px; }
.field .hint { font-size: 0.8rem; color: var(--faint); font-weight: 400; }
input[type="date"], input[type="number"], input[type="text"], select, textarea {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; max-width: 100%;
}
textarea { width: 100%; min-height: 180px; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.opts { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 10px 0; }
.opts label { font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.btn {
  font: inherit; font-weight: 600; cursor: pointer;
  background: var(--accent); color: #fff; border: none; border-radius: 6px; padding: 9px 20px;
}
.btn:hover { background: var(--accent-ink); }
.btn.secondary { background: var(--surface-2); color: var(--ink); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-bottom: 16px; }
.seg button {
  font: inherit; font-size: 0.9rem; padding: 7px 14px; border: none; cursor: pointer;
  background: var(--surface); color: var(--muted);
}
.seg button[aria-pressed="true"] { background: var(--accent); color: #fff; font-weight: 600; }
.result {
  background: var(--accent-soft); border-radius: 8px; padding: 14px 18px; margin-top: 14px;
  font-size: 1.02rem;
}
.result strong { font-size: 1.35rem; color: var(--accent-ink); }
.result .sub { font-size: 0.85rem; color: var(--muted); margin-top: 6px; }
.result ul { margin: 6px 0 0; font-size: 0.85rem; color: var(--muted); }
.notice { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 8px; padding: 10px 14px; font-size: 0.88rem; }
.privacy-badge { display: inline-block; background: var(--ok-bg); color: var(--ok); border-radius: 99px; padding: 2px 12px; font-size: 0.8rem; margin-bottom: 10px; }

/* image tool */
.drop {
  border: 2px dashed var(--line); border-radius: var(--radius); padding: 26px 16px; text-align: center;
  color: var(--muted); cursor: pointer; background: var(--bg);
}
.drop.dragover { border-color: var(--accent); background: var(--accent-soft); }
.file-cards { margin-top: 14px; display: grid; gap: 10px; }
.file-card {
  display: flex; align-items: center; gap: 12px; background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font-size: 0.88rem;
}
.file-card img { width: 56px; height: 56px; object-fit: cover; border-radius: 6px; background: var(--surface-2); }
.file-card .info { flex: 1; min-width: 0; }
.file-card .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-card .sizes { color: var(--muted); }
.file-card .saved { color: var(--ok); font-weight: 600; }

/* related & ads */
.related { margin-top: 36px; }
.related h2 { border: none; padding: 0; font-size: 1rem; color: var(--muted); }
.related ul { list-style: none; padding: 0; }
.related li { display: inline-block; margin: 0 10px 6px 0; }
.ad-slot { margin: 28px 0 0; text-align: center; }
.ad-slot .ad-label { display: block; font-size: 0.7rem; color: var(--faint); letter-spacing: 0.1em; margin-bottom: 4px; }

/* article */
.article time { color: var(--faint); font-size: 0.85rem; }

@media (max-width: 480px) {
  .site-nav { gap: 10px; }
  h1 { font-size: 1.45rem; }
  .hero h1 { font-size: 1.55rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}