/* 1pagetool.com - shared stylesheet.
   Every page imports this file so the layout stays identical across the site
   (EACH_SITE_REQUIREMENT.md R1 / R4). Keep it small: it ships on every page. */

:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --accent: #0b6bcb;
  --border: #e5e5e5;
  --radius: 8px;
  --maxw: 720px;
  --ad-h: 250px; /* reserved height for the footer ad slot - keeps CLS <= 0.1 (R3/R6) */
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.75rem 1rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- header --- */
.site-header {
  padding: 0.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}
.site-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-name span { color: var(--accent); }

/* --- content --- */
.content { flex: 1; }

h1 { font-size: 1.5rem; margin: 0 0 0.5rem; letter-spacing: -0.02em; }
.lead { color: var(--muted); margin: 0 0 1.25rem; }

/* --- tool (template body) --- */
.tool { margin: 0 0 1.5rem; }
.field { margin-bottom: 0.75rem; }
.field-row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.field-row .field { flex: 1; margin-bottom: 0; min-width: 7rem; }
.tz-table { width: 100%; border-collapse: collapse; table-layout: fixed; margin-top: 0.25rem; }
.tz-table th, .tz-table td { text-align: center; padding: 0.5rem 0.4rem; border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.tz-table th { font-size: 0.9rem; color: var(--muted); font-weight: 600; }
.tz-table td { font-size: 1.05rem; }
.tz-table .tz-now td { font-weight: 700; }
.field label { display: block; font-size: 0.9rem; margin-bottom: 0.25rem; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.field input:focus,
.field select:focus,
.field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.field textarea {
  min-height: 8em;
  font-family: inherit;
  resize: vertical;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }

.result {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fafafa;
  font-size: 1.1rem;
  min-height: 1.5em;
}
.copy-btn {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
}

/* --- directory grid --- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}
.tool-card {
  display: block;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
  font-size: 0.92rem;
}
a.tool-card:hover { border-color: var(--accent); }
.badge {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.05rem 0.5rem;
  margin-left: 0.4rem;
  vertical-align: 0.15em;
}

/* --- footer + ad --- */
.site-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.ad-slot {
  min-height: var(--ad-h);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ad-placeholder {
  width: 100%;
  min-height: var(--ad-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}
.footer-note { color: var(--muted); font-size: 0.8rem; margin: 0.75rem 0 0; }
.footer-links { margin-top: 0.75rem; font-size: 0.8rem; }
.footer-links a { color: var(--muted); text-decoration: none; margin: 0 0.25rem; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }

.content h2 { font-size: 1.15rem; margin: 1.25rem 0 0.4rem; }

.tools-grid .category {
  grid-column: 1 / -1;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0.75rem 0 0;
}

.error { color: #c00; font-size: 0.9rem; margin: 0.5rem 0 0; }

.result-lg { font-size: 2rem; font-weight: 700; letter-spacing: 0.02em; }

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
  max-width: 320px;
  margin: 0.75rem 0;
}
.calc-grid button {
  padding: 0.7rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
}
.calc-grid button:active { background: var(--border); }
.calc-grid .op { background: #f0f4f8; }
.calc-grid .fn { background: #fafafa; }
.calc-grid .eq { grid-column: span 2; background: var(--accent); color: #fff; }

.preview {
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  min-height: 8em;
  overflow-wrap: break-word;
}
.preview h1, .preview h2, .preview h3, .preview h4 { margin: 0.5em 0 0.25em; line-height: 1.3; }
.preview h1 { font-size: 1.4rem; } .preview h2 { font-size: 1.2rem; } .preview h3 { font-size: 1.05rem; }
.preview p { margin: 0.4em 0; }
.preview ul { margin: 0.4em 0; padding-left: 1.2em; }
.preview code {
  background: #eef1f4;
  border-radius: 4px;
  padding: 0.1em 0.35em;
  font-size: 0.9em;
}
.preview a { color: var(--accent); }

/* --- responsive --- */
@media (max-width: 480px) {
  h1 { font-size: 1.3rem; }
  .page { padding: 0.5rem 0.75rem 1.25rem; }
}