/* TinyKit — shared styles. Pure CSS, no frameworks, system fonts for speed. */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --text: #1a2332;
  --muted: #5b6b82;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --radius: 10px;
  --maxw: 880px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-weight: 800; font-size: 1.25rem; color: var(--text); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--accent); }
.main-nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 0.95rem; }
.main-nav a:hover, .main-nav a.active { color: var(--accent); }

/* Hero */
.hero { text-align: center; padding: 48px 20px 32px; }
.hero h1 { font-size: 2rem; margin: 0 0 12px; letter-spacing: -0.5px; }
.hero p { color: var(--muted); margin: 0 auto; max-width: 600px; }

/* Tool grid (homepage) */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; padding: 24px 0 40px; }
.tool-card { display: block; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; text-decoration: none; color: inherit; background: var(--bg); transition: box-shadow .15s, transform .15s; }
.tool-card:hover { box-shadow: 0 6px 20px rgba(37,99,235,.12); transform: translateY(-2px); }
.tool-card h2 { font-size: 1.05rem; margin: 0 0 8px; color: var(--accent-dark); }
.tool-card p { font-size: 0.9rem; color: var(--muted); margin: 0; }
.tool-icon { font-size: 1.6rem; display: block; margin-bottom: 10px; }

/* Tool page layout */
.tool-page { padding: 32px 0 48px; }
.tool-page h1 { font-size: 1.7rem; margin: 0 0 8px; letter-spacing: -0.5px; }
.tool-page .lede { color: var(--muted); margin: 0 0 24px; }
.tool-box { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.tool-box label { display: block; font-weight: 600; margin: 0 0 8px; font-size: 0.95rem; }
textarea, input[type="text"], input[type="number"], select {
  width: 100%; padding: 12px; font-size: 1rem; border: 1px solid var(--border);
  border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: #fff; color: var(--text);
}
textarea { min-height: 140px; resize: vertical; }
.row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.btn {
  display: inline-block; padding: 10px 22px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 1rem; font-weight: 600; cursor: pointer;
}
.btn:hover { background: var(--accent-dark); }
.btn-secondary { background: #eef2f7; color: var(--text); }
.btn-secondary:hover { background: #e2e8f0; }
.result-box {
  margin-top: 16px; padding: 16px; background: #fff; border: 1px dashed var(--border);
  border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all; white-space: pre-wrap; min-height: 60px;
}
.hint { font-size: 0.85rem; color: var(--muted); margin-top: 8px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
/* Reference table */
.ref-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; background: #fff; margin-top: 12px; }
.ref-table th, .ref-table td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.ref-table th { background: var(--bg-soft); }
.ref-table td:last-child { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }

/* Diff output */
.diff-line { font-family: ui-monospace, Menlo, Consolas, monospace; white-space: pre-wrap; padding: 2px 8px; font-size: 0.9rem; }
.diff-add { background: #dcfce7; }
.diff-del { background: #fee2e2; }
.diff-same { color: var(--muted); }

/* Strength meter */
.meter { height: 10px; background: #eef2f7; border-radius: 5px; overflow: hidden; margin-top: 12px; }
.meter > div { height: 100%; width: 0; transition: width .3s; border-radius: 5px; }

/* Ad slots (placeholders until AdSense is approved) */
.ad-slot {
  border: 1px dashed #cbd5e1; background: #f8fafc; color: #94a3b8;
  text-align: center; font-size: 0.8rem; letter-spacing: 1px; text-transform: uppercase;
  padding: 28px 10px; margin: 28px 0; border-radius: 8px;
}

/* Content pages */
.prose h1 { font-size: 1.8rem; }
.prose h2 { font-size: 1.25rem; margin-top: 32px; }
.prose { padding: 32px 0 56px; }
.prose p, .prose li { color: #334155; }
.prose ul { padding-left: 22px; }

/* FAQ */
.faq { margin-top: 32px; }
.faq details { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 10px; background: #fff; }
.faq summary { padding: 14px 16px; cursor: pointer; font-weight: 600; }
.faq details div { padding: 0 16px 16px; color: var(--muted); font-size: 0.95rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 32px 0; margin-top: 24px; }
.footer-nav { margin-bottom: 12px; }
.footer-nav a { color: var(--muted); text-decoration: none; margin-right: 18px; font-size: 0.9rem; }
.footer-nav a:hover { color: var(--accent); }
.site-footer p { color: #94a3b8; font-size: 0.85rem; margin: 0; }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.6rem; }
  .tool-page h1 { font-size: 1.4rem; }
  .tool-box { padding: 16px; }
  .main-nav a { margin-left: 12px; font-size: 0.88rem; }
}