:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6a6a6a;
  --color-border: #e5e5e5;
  --color-accent: #2b6cb0;
  --color-accent-hover: #1e4e8c;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
               Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;

  --max-width: 720px;
  --space: 1rem;
}

* { box-sizing: border-box; }

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Header / nav ───────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

/* ── Typography ─────────────────────────────────────── */
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.015em; }
h1 { font-size: 2rem; margin: 2rem 0 1rem; }
h2 { font-size: 1.35rem; margin: 2.5rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }

p { margin: 0 0 1rem; }

a { color: var(--color-accent); }
a:hover { color: var(--color-accent-hover); }

.lede {
  font-size: 1.15rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.muted { color: var(--color-muted); }

/* ── Sections ───────────────────────────────────────── */
main { padding: 2rem 0 4rem; }

.hero { padding: 1rem 0 2rem; }

/* ── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  font: inherit;
  cursor: pointer;
  margin-right: 0.5rem;
}
.btn:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
}
.btn-ghost:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ── Post list ──────────────────────────────────────── */
.post-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.post-list li {
  display: flex;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}
.post-date {
  color: var(--color-muted);
  font-size: 0.9rem;
  min-width: 110px;
}

/* ── Form ───────────────────────────────────────────── */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 480px;
  margin-top: 1.5rem;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.92rem;
  color: var(--color-muted);
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  color: var(--color-text);
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: #fafafa;
  width: 100%;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  background: #fff;
}

/* Honeypot — visually + assistively hidden, still in the DOM */
.hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ── Mobile ─────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1.25rem 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.5rem 0; }

  .site-header { position: relative; }

  h1 { font-size: 1.6rem; }
  .lede { font-size: 1.05rem; }
}