/* ==========================================================================
   ken30.github.io — Editorial theme
   Parchment & Amber · Fraunces / Inter / JetBrains Mono
   ========================================================================== */

:root {
  --bg: #f3efe7;
  --surface: #ebe5d8;
  --ink: #1a1915;
  --dim: #5a5648;
  --rule: #cbc3b1;
  --accent: #a54a2a;

  --serif: 'Fraunces', 'Instrument Serif', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* cozy density */
  --pad-y: 6rem;
  --gap: 2rem;
}

[data-density="compact"]  { --pad-y: 4rem; --gap: 1.25rem; }
[data-density="cozy"]     { --pad-y: 6rem; --gap: 2rem; }
[data-density="spacious"] { --pad-y: 9rem; --gap: 3rem; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body { min-height: 100%; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
  line-height: 1.5;
}

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

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

::selection { background: var(--ink); color: var(--bg); }

/* ----- Shared layout ----- */

.wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}
@media (max-width: 720px) {
  .wrap { padding: 0 1.25rem; }
}

.section {
  padding: var(--pad-y) 0;
  position: relative;
}

/* ----- Background motif ----- */

.bg-motif {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(circle at 20% 0%, rgba(0,0,0,0.04), transparent 60%);
}

body > nav,
body > main,
body > footer {
  position: relative;
  z-index: 1;
}

/* ----- Mono caption ----- */

.mono {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
}
.mono.dim { color: var(--dim); }

/* ----- Section label (eyebrow) ----- */

.section-label {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3rem;
}
.section-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--dim);
  letter-spacing: 0.2em;
}
.section-rule {
  display: block;
  width: 3rem;
  height: 1px;
  background: var(--rule);
}
.section-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* ----- Headings ----- */

.h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-wrap: balance;
  max-width: 22ch;
}
.h2 em {
  font-style: italic;
  font-weight: 400;
}
.h2 em.accent { color: var(--accent); }
.section-heading { margin-bottom: 3rem; }

/* ----- Reveal animation ----- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity .7s ease,
    transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   NAV
   ========================================================================== */

#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 1.25rem 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: padding .3s ease, background-color .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
#navbar.is-scrolled {
  padding: 0.75rem 0;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.nav-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: clamp(0.75rem, 2vw, 1.75rem);
  align-items: center;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--dim);
  transition: color .2s ease;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a.is-active { color: var(--ink); }
.nav-links a.is-active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--accent);
}
.nav-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--dim);
}
@media (max-width: 720px) {
  .nav-label { display: none; }
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 0 3rem;
  position: relative;
}
.hero-eyebrow {
  display: block;
  margin-bottom: 2rem;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 11vw, 10rem);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-wrap: balance;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
}
.hero-lede {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: minmax(0, 42rem) auto;
  gap: 3rem;
  align-items: end;
}
.hero-lede-text {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  line-height: 1.4;
  font-weight: 300;
  color: var(--ink);
  text-wrap: pretty;
}
.hero-lede-text em {
  font-style: italic;
  color: var(--accent);
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
}
.hero-meta > div { min-width: 0; }
.hero-meta dt { display: block; margin-bottom: 0.5rem; }
.hero-meta dd {
  font-size: 0.95rem;
  color: var(--ink);
}
@media (max-width: 720px) {
  .hero-lede {
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
  }
}

/* ----- CTA buttons ----- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 999px;
  border: 1px solid var(--rule);
  color: var(--ink);
  background: transparent;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}
.btn:hover { background: var(--surface); }
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: color-mix(in oklab, var(--accent) 85%, black);
}

/* ==========================================================================
   ABOUT
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-body {
  margin-top: 1.75rem;
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--dim);
  max-width: 44ch;
  text-wrap: pretty;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.stat {
  padding: 1.25rem 0;
  border-top: 1px solid var(--rule);
}
.stat-n {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat .mono { display: block; margin-top: 0.75rem; }

@media (max-width: 880px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* ==========================================================================
   EXPERIENCE
   ========================================================================== */

.exp-list {
  list-style: none;
  display: grid;
  gap: var(--gap);
}
.exp-btn {
  width: 100%;
  text-align: left;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 2rem;
  align-items: start;
  transition: background-color .2s ease;
}
.exp-years { font-size: 0.72rem; padding-top: 0.4rem; }
.exp-main { display: block; min-width: 0; }
.exp-role {
  display: block;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.2;
}
.exp-org {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--dim);
}
.exp-org-note {
  font-style: italic;
  margin-left: 0.4rem;
}
.exp-current {
  display: inline-flex;
  margin-top: 0.75rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
}
.exp-plus {
  font-family: var(--mono);
  font-size: 1.2rem;
  color: var(--dim);
  line-height: 1;
  padding-top: 0.2rem;
  transition: transform .25s ease, color .2s ease;
}
.exp-btn[aria-expanded="true"] .exp-plus {
  transform: rotate(45deg);
  color: var(--accent);
}
.exp-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s cubic-bezier(.2,.7,.2,1);
}
.exp-panel[data-open="true"] {
  max-height: 600px;
}
.exp-bullets {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  padding: 0 0 1.5rem calc(7.5rem + 2rem);
}
.exp-bullets li {
  display: grid;
  grid-template-columns: 1rem 1fr;
  gap: 0.65rem;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--dim);
}
.exp-bullets .bullet {
  color: var(--accent);
  font-family: var(--mono);
  padding-top: 0.1rem;
}

@media (max-width: 720px) {
  .exp-btn {
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
  }
  .exp-btn > .exp-years {
    grid-column: 1 / -1;
    padding-top: 0;
  }
  .exp-bullets { padding-left: 0; padding-right: 0; }
}

/* ==========================================================================
   ACHIEVEMENTS
   ========================================================================== */

.ach-grid {
  display: grid;
  gap: 1.25rem;
}
.ach-card {
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  border: 1px solid var(--rule);
  border-radius: 14px;
  background: var(--surface);
  display: grid;
  grid-template-columns: 8rem 1fr auto;
  gap: 2rem;
  align-items: start;
  transition: background-color .25s ease, border-color .25s ease;
}
.ach-card:hover {
  background: color-mix(in oklab, var(--accent) 4%, var(--surface));
  border-color: var(--accent);
}
.ach-year { padding-top: 0.3rem; }
.ach-title {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1rem;
}
.ach-bullets {
  list-style: none;
  display: grid;
  gap: 0.65rem;
}
.ach-bullets li {
  color: var(--dim);
  line-height: 1.55;
  font-size: 0.95rem;
}
.ach-chip {
  color: var(--ink);
  opacity: 0.35;
  transition: opacity .25s ease;
}
.ach-card:hover .ach-chip { opacity: 1; }

@media (max-width: 720px) {
  .ach-card { grid-template-columns: 1fr; gap: 1rem; }
  .ach-chip { display: none; }
}

/* ==========================================================================
   SKILLS
   ========================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}
.skill-group-label {
  display: block;
  margin-bottom: 1.25rem;
}
.skill-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip {
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  font-family: var(--sans);
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
  cursor: default;
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 6%, transparent);
}

/* ==========================================================================
   EDUCATION
   ========================================================================== */

.edu-list {
  display: grid;
  gap: var(--gap);
}
.edu-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  align-items: start;
}
.edu-title {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.edu-org {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--dim);
}
@media (max-width: 720px) {
  .edu-row { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ==========================================================================
   CONTACT
   ========================================================================== */

.contact-heading {
  font-family: var(--serif);
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--ink);
  text-wrap: balance;
}
.contact-heading em {
  font-style: italic;
  font-weight: 400;
}
.contact-list {
  margin-top: 3rem;
  display: grid;
  gap: 0.75rem;
}
.contact-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
  align-items: center;
}
.contact-value {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2vw, 1.75rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: color .2s ease;
}
.contact-arrow {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--dim);
  transition: color .2s ease, transform .25s ease;
}
.contact-row:hover .contact-value,
.contact-row:hover .contact-arrow {
  color: var(--accent);
}
.contact-row:hover .contact-arrow {
  transform: translateX(4px);
}
@media (max-width: 720px) {
  .contact-row {
    grid-template-columns: 1fr auto;
    gap: 0.5rem;
  }
  .contact-row > :first-child { grid-column: 1 / -1; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule);
  position: relative;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==========================================================================
   PRINT
   ========================================================================== */

@media print {
  #navbar, .bg-motif, .hero-ctas, .contact-arrow, .exp-plus, .ach-chip { display: none !important; }
  body { background: #fff; color: #000; }
  .reveal { opacity: 1; transform: none; }
  .exp-panel { max-height: none !important; }
  .section, .hero { padding: 1.5rem 0; page-break-inside: avoid; }
}