/* ===========================
   SafeRoute Base Stylesheet
   For shared color + frame system
   =========================== */

:root {
  /* brand palette */
  --bg: #ffffff;
  --fg: #111111;
  --muted: #777777;
  --accent: #111111;
  --border: #e5e5e5;

  /* layout rhythm */
  --pad: 24px;
  --maxw: 980px;
}

/* ---- Base ---- */
html, body {
  margin: 0;
  padding: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity .2s ease;
}
a:hover { opacity: .7; }

/* ---- Frame / Container ---- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--pad);
}

/* ---- Headings ---- */
h1, h2, h3, h4 {
  margin: 0 0 .6em;
  font-weight: 700;
  letter-spacing: -0.02em;
}
p { margin: 0 0 1.2em; color: var(--muted); }

/* ---- Navbar ---- */
.nav {
  position: sticky; top: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--pad);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.brand { font-weight: 800; letter-spacing: -0.04em; font-size: 18px; }
.nav-links { display: flex; gap: 24px; font-size: 14px; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  transition: background .2s ease;
}
.btn:hover { background: #333; }

/* ---- Sections ---- */
.section {
  padding: 64px var(--pad);
  border-top: 1px solid var(--border);
}

/* ---- Footer ---- */
footer {
  text-align: center;
  padding: 40px var(--pad);
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}