/* ---------- Design tokens ---------- */
:root {
  --navy: #002F48;
  --navy-soft: #56707C;
  --paper: #FFFFFF;
  --paper-alt: #F6F7F6;
  --line: rgba(0, 47, 72, 0.14);

  --font-heading: 'Source Serif 4', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --measure: 68ch;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--navy);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

a.text-link {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: border-color 0.15s ease;
}
a.text-link:hover { border-color: var(--navy); }

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
}

p { max-width: var(--measure); color: var(--navy); }

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Nav ---------- */
.nav-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-bar.scrolled { box-shadow: 0 4px 14px rgba(0, 47, 72, 0.06); }

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  color: var(--navy);
}

.brand img { width: 24px; height: 24px; border-radius: 4px; display: block; flex-shrink: 0; }
.brand .brand-text { white-space: nowrap; }

.nav-links { display: flex; gap: 28px; font-size: 15px; }

.nav-links a { color: var(--navy-soft); transition: color 0.15s ease; }
.nav-links a:hover, .nav-links a.active { color: var(--navy); }
.nav-links a.active { border-bottom: 1.5px solid var(--navy); padding-bottom: 3px; }

/* ---------- Hero (home only) ---------- */
.hero { padding: 68px 0 64px; border-bottom: 1px solid var(--line); }

.hero .kicker { font-size: 15px; color: var(--navy-soft); margin-bottom: 14px; }

.hero h1 { font-size: clamp(38px, 6vw, 58px); }

.hero .role { margin-top: 18px; font-size: 18px; color: var(--navy-soft); max-width: 56ch; }

.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 22px;
  font-size: 15px;
  font-family: var(--font-body);
  border-radius: 3px;
  border: 1px solid var(--navy);
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-primary { background: var(--navy); color: var(--paper); }
.btn-primary:hover { background: #05435F; }

.btn-ghost, .btn-ghost-light { background: transparent; color: var(--navy); }
.btn-ghost:hover, .btn-ghost-light:hover { background: rgba(0, 47, 72, 0.05); }

/* ---------- Page header (inner pages) ---------- */
.page-header { padding: 52px 0 6px; border-bottom: 1px solid var(--line); }
.page-header h1 { font-size: clamp(32px, 5vw, 46px); }
.page-header .sub { margin: 14px 0 36px; color: var(--navy-soft); font-size: 16px; }

/* ---------- Sections ---------- */
.section { padding: 52px 0; border-bottom: 1px solid var(--line); }
.section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
  gap: 16px;
}

.section-head h2 { font-size: 25px; }
.section-head .see-all { font-size: 14px; color: var(--navy-soft); white-space: nowrap; }

/* ---------- Project list ---------- */
.project-row {
  display: grid;
  grid-template-columns: 56px 1fr 1.5fr;
  gap: 22px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.project-row:first-child { border-top: none; }

.project-row .year { font-size: 14px; color: var(--navy-soft); padding-top: 3px; }

.project-row h3 { font-size: 20px; }
.project-row .summary { color: var(--navy-soft); margin: 8px 0 8px; font-size: 15.5px; }

.tech-list-text { font-size: 14px; color: var(--navy-soft); margin: 0 0 10px; }

.project-links { margin-top: 4px; display: flex; gap: 18px; font-size: 14px; }

/* ---------- Blog list ---------- */
.post-row { padding: 24px 0; border-top: 1px solid var(--line); }
.post-row:first-child { border-top: none; }

.post-row .date { font-size: 13.5px; color: var(--navy-soft); }

.post-row h3 { font-size: 21px; margin-top: 6px; }
.post-row h3 a:hover { color: var(--navy-soft); }

.post-row .excerpt { color: var(--navy-soft); margin-top: 6px; font-size: 15.5px; }

/* ---------- Post page ---------- */
.post-header { padding: 48px 0 28px; }
.post-header .date { color: var(--navy-soft); font-size: 14px; }
.post-header h1 { margin-top: 12px; font-size: clamp(28px, 5vw, 42px); }

.post-body { padding-bottom: 56px; font-size: 17.5px; line-height: 1.75; max-width: var(--measure); }
.post-body p { margin: 0 0 1.3em; }

/* ---------- Experience & skills ---------- */
.experience-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 22px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.experience-row:first-child { border-top: none; }
.experience-row .period { font-size: 14px; color: var(--navy-soft); padding-top: 3px; }
.experience-row .org { color: var(--navy-soft); font-size: 15px; margin: 4px 0 8px; }

.skills-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.skill-tag {
  font-size: 13.5px;
  color: var(--navy-soft);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 4px 10px;
}

.post-header-meta { color: var(--navy-soft); font-size: 15px; margin-top: 10px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 44px; align-items: start; }

/* ---------- Footer ---------- */
footer {
  padding: 36px 0 56px;
  color: var(--navy-soft);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer a:hover { color: var(--navy); }

/* ---------- States ---------- */
.empty-state { padding: 32px 0; color: var(--navy-soft); font-size: 15px; border-top: 1px solid var(--line); }

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .brand .brand-text { display: none; }
  .nav-links { gap: 16px; font-size: 14px; }
}

@media (max-width: 680px) {
  .project-row { grid-template-columns: 1fr; }
  .project-row .year { padding-top: 0; }
  .experience-row { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 6px; }
}

.admin-tabs { display: flex; gap: 22px; margin-bottom: 28px; font-size: 15px; flex-wrap: wrap; }
.admin-tabs button {
  background: none; border: none; cursor: pointer; font-family: var(--font-body);
  color: var(--navy-soft); padding-bottom: 6px; border-bottom: 2px solid transparent;
}
.admin-tabs button.active { color: var(--navy); border-bottom-color: var(--navy); }

.editor-title { font-family: var(--font-heading); font-size: 18px; color: var(--navy); margin-bottom: 4px; font-weight: 600; }
.admin-shell { max-width: 760px; }

.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
}

.auth-card {
  max-width: 380px;
  margin: 90px auto;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.auth-card h1 { font-size: 24px; margin-bottom: 6px; }
.auth-tabs { display: flex; gap: 18px; margin: 18px 0 22px; font-size: 14px; }
.auth-tabs button {
  background: none; border: none; padding: 0 0 6px; cursor: pointer;
  color: var(--navy-soft); font-size: 14px; font-family: var(--font-body);
  border-bottom: 2px solid transparent;
}
.auth-tabs button.active { color: var(--navy); border-color: var(--navy); }

label { display: block; font-size: 13px; color: var(--navy-soft); margin: 14px 0 5px; }

input[type=text], input[type=email], input[type=password], textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 15px;
  background: var(--paper);
  color: var(--navy);
}
input:focus, textarea:focus { outline: 2px solid var(--navy); outline-offset: 1px; }

textarea { resize: vertical; min-height: 90px; }

.form-actions { margin-top: 22px; display: flex; gap: 10px; align-items: center; }

.msg { font-size: 13.5px; margin-top: 12px; }
.msg.error { color: #A3271F; }
.msg.ok { color: #1F7A4D; }

.admin-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
  margin-bottom: 14px;
  background: var(--paper);
}

.admin-item .row { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.admin-item h4 { font-family: var(--font-heading); font-size: 18px; margin: 0; font-weight: 600; }
.admin-item .meta { font-size: 12.5px; color: var(--navy-soft); margin-top: 4px; }
.admin-item .actions { display: flex; gap: 14px; font-size: 13px; flex-shrink: 0; }
.admin-item .actions button { background: none; border: none; cursor: pointer; color: var(--navy-soft); font-family: var(--font-body); padding: 0; }
.admin-item .actions button:hover { color: var(--navy); }
.admin-item .actions button.danger:hover { color: #A3271F; }

.editor-panel { border: 1px solid var(--line); border-radius: 6px; padding: 22px; background: var(--paper); margin-bottom: 26px; }

.badge { font-size: 11px; padding: 2px 7px; border-radius: 3px; border: 1px solid var(--line); color: var(--navy-soft); }
.badge.live { color: #1F7A4D; border-color: #1F7A4D; }

.checkbox-row { display: flex; align-items: center; gap: 8px; margin-top: 14px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }