/* Shared styles for all tools. Link with <link rel="stylesheet" href="/styles.css">. */

:root {
  --bg: #ffffff; --fg: #111418; --muted: #5c6773;
  --card: #f6f8fa; --border: #e2e6ea; --accent: #3b82f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --fg: #e6edf3; --muted: #8b949e;
    --card: #161b22; --border: #30363d; --accent: #58a6ff;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; font: 16px/1.6 system-ui, -apple-system, sans-serif;
  background: var(--bg); color: var(--fg);
  display: flex; justify-content: center; padding: 3rem 1.25rem;
}
main { width: 100%; max-width: 640px; }
h1 { font-size: 1.75rem; margin: 0 0 .25rem; }
p.sub { color: var(--muted); margin: 0 0 2rem; }

/* Back link (tool pages) */
a.back { color: var(--muted); text-decoration: none; font-size: .9rem; }
a.back:hover { color: var(--accent); }
/* On tool pages the heading sits below the back link, above the content. */
a.back + h1 { margin: .5rem 0 1.5rem; }

/* Tool list (landing page) */
ul.tools { list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; }
a.tool {
  display: block; padding: 1rem 1.25rem; text-decoration: none;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; color: inherit; transition: border-color .15s;
}
a.tool:hover { border-color: var(--accent); }
a.tool .name { font-weight: 600; }
a.tool .desc { color: var(--muted); font-size: .9rem; }

/* Cards / inputs */
textarea {
  width: 100%; min-height: 240px; padding: 1rem; resize: vertical;
  font: inherit; color: inherit; background: var(--card);
  border: 1px solid var(--border); border-radius: 10px;
}
textarea:focus { outline: none; border-color: var(--accent); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: 1.25rem; }
.stat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1rem; text-align: center;
}
.stat .num { font-size: 1.6rem; font-weight: 700; }
.stat .label { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }

footer { margin-top: 2.5rem; color: var(--muted); font-size: .85rem; }