:root {
  --bg: #212121;   /* background */
  --nc: #F5F5F5;   /* for variables and suitable components (near-white) */
  --bo: #2d6898;   /* border / accent */

  /* derived tones — kept as separate variables so the 3 chosen colors above
     stay the single source of truth; change --bg/--nc/--bo and these still
     relate sensibly since they're simple tints of them */
  --bg-raised: #262626;
  --bg-nav: #1a1a1a;
  --line: #333333;
  --line-soft: #2f2f2f;
  --text-muted: #cfcfcf;
  --text-faint: #9a9a9a;
  --text-body: #e0e0e0;
  --accent-soft: #9fc1dd;

  /* Text color for things sitting directly on the --bo accent background
     (the year tag, the email button on hover). --bo itself doesn't change
     between themes, so one value works for both — it's not part of the
     light-theme override below on purpose. */
  --on-accent: #F5F5F5;
}

/* Light theme — same 3 brand colors, roles flipped (bg/nc swap, --bo stays
   the accent in both). Applied via data-theme="light" on <html>, set by
   js/site.js (persisted in localStorage) and by the early inline script
   in each page's <head> that avoids a flash of the wrong theme. */
:root[data-theme="light"] {
  --bg: #F5F5F5;
  --nc: #1a1a1a;
  --bo: #2d6898;
  --bg-raised: #ffffff;
  --bg-nav: #ffffff;
  --line: #dcdcdc;
  --line-soft: #e6e6e6;
  --text-muted: #4a4a4a;
  --text-faint: #6e6e6e;
  --text-body: #2a2a2a;
  --accent-soft: #1f5075;
}

* { box-sizing: border-box; }

/* Smooths the switch when the toggle is clicked; harmless on normal
   page load since the early inline script in <head> sets the theme
   before first paint, so there's nothing to visibly transition then. */
body, .site-nav, .nav-links, .card-list, .theme-toggle, .icon-link,
.btn-outline, .list-item {
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--nc);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

a {
  color: var(--bo);
  text-decoration: none;
}
a:hover {
  color: var(--accent-soft);
  text-decoration: underline;
}

h1, h2, h3 {
  font-family: 'Source Serif 4', Georgia, serif;
  color: var(--nc);
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
}

/* ---------- Nav ---------- */
.site-nav {
  width: 100%;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-nav .nav-inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 24px;
}
.brand {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 19px;
  font-weight: 600;
  color: var(--nc) !important;
  text-decoration: none !important;
  margin-right: auto;
}
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--nc);
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--bo);
  color: var(--bo);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  color: var(--nc);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  text-decoration: none !important;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--nc);
  border-bottom: 2px solid var(--bo);
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--nc);
  border-radius: 2px;
}

@media (max-width: 720px) {
  .hamburger { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-nav);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid var(--line-soft);
    transition: max-height .2s ease;
  }
  .nav-links.open {
    max-height: 400px;
  }
  .nav-links a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--line-soft);
    border-left: none;
  }
  .nav-links a:hover,
  .nav-links a.active {
    border-bottom: 1px solid var(--line-soft);
    background: var(--bg-raised);
  }
}

/* ---------- Hero / About ---------- */
.hero {
  display: flex;
  gap: 48px;
  align-items: center;
  padding: 72px 24px 48px 24px;
}
@media (max-width: 720px) {
  .hero { flex-direction: column-reverse; text-align: center; padding-top: 40px; }
}
.hero h1 {
  font-size: 40px;
  font-weight: 600;
  margin: 0 0 6px 0;
}
.hero .subheading {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0 0 18px 0;
  line-height: 1.6;
}
.hero p {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-body);
  margin: 0 0 14px 0;
}
.avatar {
  width: 176px;
  height: 176px;
  border-radius: 50%;
  border: 3px solid var(--bo);
  background: var(--bg-raised);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12.5px;
  color: var(--text-faint);
  text-align: center;
  object-fit: cover;
}
@media (max-width: 720px) {
  .avatar { width: 120px; height: 120px; margin: 0 auto; }
}
.social-icons {
  display: flex;
  gap: 12px;
  justify-content: flex-start;
}
@media (max-width: 720px) {
  .social-icons { justify-content: center; }
}
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--nc);
}
.icon-link:hover {
  border-color: var(--bo);
  color: var(--bo);
  text-decoration: none;
}

/* ---------- Sections / lists ---------- */
.section {
  padding: 16px 24px 48px 24px;
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 20px 0;
}
.section-title {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bo);
  margin: 0;
}
.view-all {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--accent-soft);
  white-space: nowrap;
}
.view-all:hover { color: var(--bo); }

.card-list {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 24px;
  background: var(--bg-raised);
}
.list-item {
  display: flex;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.list-item:last-child { border-bottom: none; }
@media (max-width: 480px) {
  .list-item { flex-direction: column; gap: 4px; }
}

.date-pill {
  font-size: 12.5px;
  color: var(--bo);
  font-weight: 600;
  min-width: 62px;
  white-space: nowrap;
}
.tag {
  font-size: 12px;
  color: var(--on-accent);
  background: var(--bo);
  border-radius: 5px;
  padding: 3px 9px;
  white-space: nowrap;
  height: fit-content;
}
.item-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--nc);
  line-height: 1.5;
}
.item-meta {
  font-size: 14px;
  color: var(--text-faint);
  margin-top: 3px;
}
.item-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-body);
}
.empty-note {
  font-size: 14px;
  color: var(--text-faint);
  padding: 16px 0;
}

/* ---------- Full list page ---------- */
.page-title {
  font-size: 30px;
  margin: 48px 0 28px 0;
}
.back-link {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 14px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  background: var(--bg-nav);
  padding: 36px 24px;
  text-align: center;
}
.site-footer p {
  font-size: 14px;
  color: var(--text-faint);
  margin: 0 0 14px 0;
}
.btn-outline {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--nc);
  border: 1.5px solid var(--bo);
  border-radius: 7px;
  padding: 9px 18px;
  background: transparent;
  cursor: pointer;
  display: inline-block;
}
.btn-outline:hover {
  background: var(--bo);
  color: var(--on-accent);
  text-decoration: none;
}