/* FreeTools shared stylesheet — pure CSS, no dependencies */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b7280;
  --card: #f6f7f9;
  --border: #e5e7eb;
  --accent: #1d4ed8;
  --accent-text: #ffffff;
  --code-bg: #f1f2f4;
  --radius: 10px;
  --max: 980px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --fg: #e9eaec;
    --muted: #9aa0a6;
    --card: #1c1c21;
    --border: #2e2e35;
    --accent: #7aa2ff;
    --accent-text: #0b0b0d;
    --code-bg: #1e1e24;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
.container { max-width: var(--max); margin: 0 auto; padding: 0 1rem; }
.site-header { border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: .75rem; padding: .9rem 1rem; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
.tagline { color: var(--muted); font-size: .9rem; }
main { padding: 1.25rem 0 3rem; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: .2em 0 .5em; }
h2 { font-size: 1.25rem; margin: 2rem 0 .6rem; }
p.lead { color: var(--muted); max-width: 62ch; }
a { color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; text-decoration: none; color: var(--fg); }
.card:hover { border-color: var(--accent); }
.card h3 { margin: .1em 0 .3em; font-size: 1.05rem; color: var(--fg); }
.card p { margin: 0; color: var(--muted); font-size: .9rem; }
label { display: block; font-weight: 600; margin: .9rem 0 .35rem; }
textarea, input[type="text"], input[type="number"], input[type="datetime-local"], select {
  width: 100%; padding: .6rem .7rem; border: 1px solid var(--border);
  border-radius: 8px; background: var(--bg); color: var(--fg); font: inherit;
}
textarea { min-height: 140px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; }
input[type="range"] { width: 100%; }
input[type="color"] { width: 3.5rem; height: 2.6rem; padding: 0; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); }
.row { display: flex; flex-wrap: wrap; gap: .6rem; margin: .9rem 0; }
button, .btn {
  cursor: pointer; border: 1px solid var(--border); background: var(--card);
  color: var(--fg); border-radius: 8px; padding: .55rem 1rem; font: inherit; font-weight: 600;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
pre.output, div.preview {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: .8rem; white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; min-height: 3rem;
}
div.preview { white-space: normal; font-family: inherit; }
div.preview h1, div.preview h2, div.preview h3 { margin: .8em 0 .4em; }
div.preview p { margin: .5em 0; }
div.preview blockquote { margin: .6em 0; padding: .2em .8em; border-left: 3px solid var(--accent); color: var(--muted); }
div.preview pre { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: .6rem; overflow-x: auto; }
div.preview code { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 0 .3em; font-size: .85em; }
div.preview pre code { border: 0; padding: 0; background: none; }
.error { color: #dc2626; font-weight: 600; }
.ok { color: #15803d; font-weight: 600; }
@media (prefers-color-scheme: dark) { .error { color: #f87171; } .ok { color: #4ade80; } }
.privacy { background: var(--card); border: 1px dashed var(--border); border-radius: 8px; padding: .7rem 1rem; font-size: .9rem; color: var(--muted); }
.ad-slot { display: none; }
.site-footer { border-top: 1px solid var(--border); padding: 1.5rem 0; color: var(--muted); font-size: .9rem; }
.site-footer a { color: var(--muted); }
.faq dt { font-weight: 700; margin-top: 1rem; }
.faq dd { margin: .3rem 0 0; color: var(--muted); }
.controls { display: flex; flex-wrap: wrap; gap: .8rem 1.2rem; align-items: center; }
.controls label { margin: 0; font-weight: 500; display: inline-flex; align-items: center; gap: .35rem; }
.swatch { width: 100%; height: 90px; border-radius: 8px; border: 1px solid var(--border); margin-top: .6rem; }
.breadcrumb { font-size: .9rem; color: var(--muted); margin: 0 0 .5rem; }
.breadcrumb a { color: var(--muted); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .8rem; margin: 1rem 0; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: .7rem .9rem; }
.stat .num { font-size: 1.4rem; font-weight: 700; }
.stat .lbl { font-size: .85rem; color: var(--muted); }
@media (max-width: 600px) { h1 { font-size: 1.55rem; } .row button { flex: 1 1 auto; } }
.lang-switch { margin-left: auto; display: flex; align-items: center; gap: .3rem; }
.lang-switch button { background: none; border: 1px solid transparent; border-radius: 6px; color: var(--muted); cursor: pointer; font: inherit; font-size: .88rem; padding: .25rem .45rem; }
.lang-switch button:hover { color: var(--fg); }
.lang-switch button.active { color: var(--accent); font-weight: 700; border-color: var(--border); }
.lang-switch .sep { color: var(--border); user-select: none; }