/* =========================================================
   DESIGN TOKENS
   ========================================================= */
:root {
  --color-bg: #F6F7F4;
  --color-bg-card: #FFFFFF;
  --color-bg-alt: #ECEFEA;
  --color-ink: #16202A;
  --color-ink-soft: #4E5A61;
  --color-ink-faint: #8A9299;
  --color-accent: #2F6F63;
  --color-accent-dark: #204B43;
  --color-gold: #B9924F;
  --color-line: #DCE1DB;
  --color-line-strong: #C3CBC4;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --margin-col: 150px;
  --content-max: 760px;
  --gap: 2.5rem;

  --radius: 3px;
  --transition: 220ms ease;
}

/* =========================================================
   RESET
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--color-ink);
}

h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1.1em; }

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover { color: var(--color-accent-dark); }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* =========================================================
   LAYOUT: margin-column system
   Every content page pairs a narrow margin column (meta/labels,
   like a notebook margin) with a main content column.
   ========================================================= */
.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: var(--margin-col) minmax(0, 1fr);
  gap: var(--gap);
}

.layout-margin {
  padding-top: 0.35rem;
  border-right: 1px solid var(--color-line);
}

.layout-margin-inner {
  position: sticky;
  top: 6.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  line-height: 1.7;
}

.layout-main { min-width: 0; padding-bottom: 5rem; padding-top: 2rem;}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .layout-margin {
    border-right: none;
    border-bottom: 1px solid var(--color-line);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
  }
  .layout-margin-inner { position: static; }
}

/* =========================================================
   NAV
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 247, 244, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--color-line);
}

.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-ink);
}
.nav-brand:hover { color: var(--color-ink); }

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.nav-links a:hover { color: var(--color-ink); border-color: var(--color-line-strong); }
.nav-link--active { color: var(--color-ink) !important; border-color: var(--color-accent) !important; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  width: 40px;
  height: 36px;
  cursor: pointer;
  font-family: var(--font-mono);
  color: var(--color-ink);
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1.5rem 1rem;
    display: none;
  }
  .nav-links--open { display: flex; }
  .nav-links a { display: block; padding: 0.6rem 0; }
}

/* =========================================================
   HERO (fade-in on load)
   ========================================================= */
.hero {
  padding: 0rem 0 5rem;
}

.hero-eyebrow,
.hero h1,
.hero-sub,
.hero-actions {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1000ms ease, transform 1000ms ease;
}

.hero--visible .hero-eyebrow { opacity: 1; transform: none; transition-delay: 60ms; }
.hero--visible h1 { opacity: 1; transform: none; transition-delay: 180ms; }
.hero--visible .hero-sub { opacity: 1; transform: none; transition-delay: 340ms; }
.hero--visible .hero-actions { opacity: 1; transform: none; transition-delay: 480ms; }

.hero h1 { max-width: 15ch; }

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
  margin-bottom: 2rem;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

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

.btn-ghost {
  border-color: var(--color-line-strong);
  color: var(--color-ink);
}
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }

/* =========================================================
   SECTION HEADINGS
   ========================================================= */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 1rem;
}

.section-heading h2 { margin: 0; }
.section-heading a { font-family: var(--font-mono); font-size: 0.82rem; white-space: nowrap; }

.section-sub {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
  margin-bottom: 2rem;
}

/* =========================================================
   POST CARDS
   ========================================================= */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 800px) {
  .post-grid { grid-template-columns: 1fr; }
}

.post-card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  color: var(--color-ink);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.post-card:hover {
  color: var(--color-ink);
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(22, 32, 42, 0.06);
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-ink-faint);
  letter-spacing: 0.04em;
}

.post-card-title {
  font-size: 1.1rem;
  margin: 0.5rem 0 0.5rem;
}

.post-card-excerpt {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  margin-bottom: 0.75rem;
}

.post-card-tags {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-gold);
  letter-spacing: 0.04em;
}

/* =========================================================
   BLOG INDEX
   ========================================================= */
.search-field {
  width: 100%;
  max-width: 340px;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.92rem;
  background: var(--color-bg-card);
  color: var(--color-ink);
  margin-bottom: 2rem;
}

.empty-state { color: var(--color-ink-soft); font-style: italic; }

/* =========================================================
   SINGLE POST
   ========================================================= */
.post-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.post-body { max-width: var(--content-max); font-size: 1.05rem; }
.post-body p { margin-bottom: 1.3em; }

.post-back { margin-top: 2.5rem; font-family: var(--font-mono); font-size: 0.85rem; }

/* =========================================================
   ABOUT PAGE
   ========================================================= */
.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.social-row { display: flex; gap: 1.25rem; margin-top: 1.5rem; flex-wrap: wrap; }
.social-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--color-line-strong);
  padding-bottom: 2px;
}

/* =========================================================
   CV PAGE
   ========================================================= */
.cv-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-line);
}
.cv-entry:last-child { border-bottom: none; }

.cv-entry-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-ink-faint);
  letter-spacing: 0.03em;
  padding-top: 0.15rem;
}

.cv-entry-role { font-weight: 600; margin-bottom: 0.15rem; }
.cv-entry-org { color: var(--color-accent); font-size: 0.92rem; margin-bottom: 0.6rem; }
.cv-entry-desc { color: var(--color-ink-soft); font-size: 0.95rem; margin: 0; }

@media (max-width: 640px) {
  .cv-entry { grid-template-columns: 1fr; gap: 0.35rem; }
}

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  color: var(--color-ink-soft);
}

.cv-download { margin: 0.5rem 0 2.5rem; }

/* =========================================================
   ADMIN
   ========================================================= */
.admin-gate {
  max-width: 420px;
  padding: 2rem 0 1rem;
}

.admin-gate-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin: 1.5rem 0;
}

.admin-gate-input { max-width: none; margin-bottom: 0; }

.admin-fineprint {
  font-size: 0.85rem;
  color: var(--color-ink-faint);
  border-top: 1px solid var(--color-line);
  padding-top: 1.25rem;
}

.admin-fineprint code,
.admin-form code {
  font-family: var(--font-mono);
  background: var(--color-bg-alt);
  padding: 0.1em 0.35em;
  border-radius: var(--radius);
  font-size: 0.9em;
}

.admin-notice {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0.65rem 0.9rem;
  margin: 0 0 1.5rem;
}

.admin-notice--error {
  color: #A3423A;
  background: #FBEEEC;
  border-color: #E9C6C1;
}

.admin-toolbar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.admin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

@media (max-width: 900px) {
  .admin-grid { grid-template-columns: 1fr; }
}

.admin-form { display: flex; flex-direction: column; }

.admin-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin: 1rem 0 0.4rem;
}
.admin-label:first-child { margin-top: 0; }

.admin-label-hint {
  text-transform: none;
  color: var(--color-ink-faint);
  letter-spacing: 0;
}

.admin-textarea { max-width: none; resize: vertical; font-family: var(--font-body); }
.admin-textarea-lg { min-height: 180px; font-family: var(--font-mono); font-size: 0.85rem; }

.admin-form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.admin-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-line);
}

.admin-row-title { font-size: 1rem; margin: 0.35rem 0; }
.admin-row-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

.btn-small { padding: 0.4rem 0.8rem; font-size: 0.82rem; }

.btn-danger {
  border: 1px solid #E9C6C1;
  color: #A3423A;
  background: transparent;
}
.btn-danger:hover { background: #FBEEEC; color: #A3423A; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--color-line);
  margin-top: 3rem;
}
.site-footer .layout { padding-top: 2rem; padding-bottom: 2rem; }
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-ink-faint);
}

/* =========================================================
   PRINT (used by cv.html)
   ========================================================= */
@media print {
  .site-header, .site-footer, .cv-download { display: none; }
  body { background: #fff; }
  .layout { grid-template-columns: 1fr; max-width: none; }
  .layout-margin { display: none; }
  a { color: var(--color-ink); text-decoration: underline; }
}