/* FixAndTest — shared styles */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f4;
  --text: #0f172a;
  --muted: #5b6474;
  --border: #e2e6eb;
  --accent: #0d9488;
  --accent-strong: #0f766e;
  --accent-soft: #ccfbf1;
  --accent-ink: #ffffff;
  --warn-bg: #fff7e6;
  --warn-border: #f5c26b;
  --warn-text: #7a4b00;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f14;
    --surface: #121922;
    --surface-2: #1a2330;
    --text: #e6edf3;
    --muted: #9aa5b4;
    --border: #253142;
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --accent-soft: #0f2f2c;
    --accent-ink: #042f2a;
    --warn-bg: #2a2110;
    --warn-border: #6b5220;
    --warn-text: #f3d08a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent-strong); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

img, svg { max-width: 100%; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

.wrap { width: 100%; max-width: 820px; margin: 0 auto; padding: 0 16px; }
.wrap-wide { max-width: 1040px; }

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -.02em;
  color: var(--text);
  text-decoration: none;
}
.brand-mark { width: 28px; height: 28px; flex: none; }
.brand b { color: var(--accent); font-weight: 800; }
.site-nav { display: flex; gap: 18px; font-size: 15px; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--text); }

/* Page head */
.page-head { padding: 32px 0 8px; }
.breadcrumb { font-size: 14px; color: var(--muted); margin: 0 0 8px; }
.breadcrumb a { color: var(--muted); }
h1 {
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: 0 0 10px;
}
.lede { font-size: 18px; color: var(--muted); margin: 0; }

h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.01em; margin: 40px 0 12px; }
h3 { font-size: 19px; line-height: 1.35; margin: 24px 0 8px; }
p, ul, ol { margin: 0 0 14px; }
li { margin-bottom: 6px; }

.content { padding-bottom: 48px; }

/* Cards & callouts */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.callout {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  color: var(--warn-text);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 15px;
}
.callout strong { color: inherit; }

/* Tool grid (home) */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 16px 0 32px;
  padding: 0;
  list-style: none;
}
.tool-grid li { margin: 0; }
.tool-card {
  display: block;
  height: 100%;
  padding: 20px;
  color: var(--text);
  text-decoration: none;
  transition: transform .15s ease, border-color .15s ease;
}
.tool-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.tool-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent-strong);
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.tool-card h3 { margin: 0 0 6px; }
.tool-card p { margin: 0; color: var(--muted); font-size: 15px; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  padding: 0;
  list-style: none;
}
.features li { margin: 0; padding: 16px; }
.features strong { display: block; margin-bottom: 4px; }
.features span { color: var(--muted); font-size: 15px; }

/* FAQ */
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  margin-bottom: 10px;
}
.faq summary {
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 650;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 16px 6px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 14px;
  padding: 24px 0;
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.site-footer a { color: var(--muted); }

/* Utility */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .site-nav { gap: 14px; font-size: 14px; }
  h2 { font-size: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}