/* style.css — global + responsive styles for the personal blog */
:root {
  --text: #1f2933;
  --muted: #52606d;
  --accent: #205081;
  --border: #d9e2ec;
  --bg: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* --- Site header / navigation (desktop + mobile) --- */
.site-header {
  border-bottom: 1px solid var(--border);
}

.site-nav {
  max-width: 60rem;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

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

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.nav-links a:hover,
.nav-links a:focus {
  color: var(--accent);
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

/* --- Main content --- */
main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* --- Contact form --- */
.contact-form {
  max-width: 36rem;
  display: grid;
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.35rem;
}

.form-field label {
  font-weight: 600;
}

.form-field input,
.form-field textarea {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 100%;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

button[type="submit"] {
  font: inherit;
  font-weight: 600;
  padding: 0.55rem 1.25rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
}

button[type="submit"]:hover {
  filter: brightness(1.1);
}

/* --- Reading list --- */
.reading-category {
  margin-bottom: 2rem;
}

.reading-category h2 {
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
  margin-bottom: 0.75rem;
}

.reading-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.reading-entry {
  display: grid;
  gap: 0.1rem;
}

.reading-link {
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.reading-link:hover,
.reading-link:focus {
  text-decoration: underline;
}

.reading-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

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

/* Two columns once there is room — keeps long lists scannable. */
@media (min-width: 40rem) {
  .reading-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* --- Mobile: nav links stack under the brand --- */
@media (max-width: 30rem) {
  .site-nav {
    justify-content: flex-start;
  }
}