/* ==========================================================================
   correleotion.com — portfolio styles
   Converted from a single bundled artifact into a plain static stylesheet.
   Theme + accent are driven by data-* attributes on <html> (see js/main.js).
   ========================================================================== */

/* ---- reset ---- */
*,
*::before,
*::after { box-sizing: border-box; }

html,
body { margin: 0; padding: 0; }

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

a { color: inherit; }

::selection { background: #888; color: #fff; }

@keyframes blink {
  0%, 48%   { opacity: 1; }
  49%, 100% { opacity: 0; }
}

/* ---- theme tokens ---- */
:root {
  --bg: #f4f4f1;
  --fg: #14110f;
  --body: #46433f;
  --muted: #6f6c68;
  --faint: #9a978f;
  --line: #d9d8d3;
  --linex: #14110f;
  --card: #faf9f7;
  --nav-bg: rgba(244, 244, 241, 0.82);
  --inv-bg: #14110f;
  --inv-fg: #f4f4f1;
  --inv-faint: #8a8783;
  --inv-line: #45423e;
  --inv-body: #c8c6c1;

  /* accent — overridden by [data-accent] below; Monochrome is the default */
  --accent: #14110f;

  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', 'IBM Plex Sans Thai', sans-serif;
}

html[data-theme="dark"] {
  --bg: #13110f;
  --fg: #f1f0ec;
  --body: #bfbcb6;
  --muted: #9d9a93;
  --faint: #6b6862;
  --line: #2c2925;
  --linex: #4a463f;
  --card: #1c1916;
  --nav-bg: rgba(19, 17, 15, 0.84);
  --inv-bg: #f1f0ec;
  --inv-fg: #14110f;
  --inv-faint: #56534f;
  --inv-line: #c9c8c2;
  --inv-body: #46433f;
}

html[data-accent="terminal"] { --accent: #2f9e44; }
html[data-accent="amber"]    { --accent: #c2730a; }

/* ---- base ---- */
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color .28s ease, color .28s ease;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---- nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--linex);
}
.nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 13px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  text-decoration: none;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.brand__dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.nav__link {
  color: var(--fg);
  text-decoration: none;
  opacity: 0.62;
}
.nav__link:hover { opacity: 1; }
.nav__toggles {
  display: flex;
  gap: 8px;
  margin-left: 4px;
}
.btn-ghost {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--linex);
  padding: 5px 10px;
  cursor: pointer;
  line-height: 1;
}
.btn-ghost--icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost__icon { font-size: 12px; }

/* ---- hero ---- */
.hero { padding: 96px 0 72px; }
.hero__coords {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faint);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero__coords .sep { opacity: 0.5; }
.hero__title {
  margin: 0;
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(44px, 7vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.03em;
}
.cursor {
  display: inline-block;
  width: 0.5em;
  height: 0.86em;
  background: var(--accent);
  margin-left: 0.12em;
  vertical-align: -0.02em;
  animation: blink 1.1s step-end infinite;
}
.hero__role-line {
  margin: 34px 0 0;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__role {
  font-family: var(--mono);
  font-size: clamp(16px, 2vw, 21px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.hero__role-sub {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}
.hero__tagline {
  max-width: 640px;
  margin: 28px 0 0;
  font-size: 17px;
  line-height: 1.7;
  color: var(--body);
}
.hero__actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.btn-primary {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--inv-fg);
  background: var(--inv-bg);
  text-decoration: none;
  padding: 13px 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary .arrow { color: var(--accent); }
.btn-outline {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg);
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid var(--linex);
}
.badge-available {
  font-family: var(--mono);
  font-size: 12px;
  color: #2f9e44;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 4px;
}
.badge-available__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #2f9e44;
  display: inline-block;
}

/* ---- meta strip ---- */
.meta-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--linex);
  border-bottom: 1px solid var(--line);
}
.meta-cell {
  padding: 22px 20px 24px;
  border-right: 1px solid var(--line);
}
.meta-cell:last-child { border-right: none; }
.meta-cell__label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin-bottom: 10px;
}
.meta-cell__value {
  font-family: var(--mono);
  font-size: 14px;
}

/* ---- section scaffold ---- */
.section {
  padding: 96px 0 0;
  scroll-margin-top: 70px;
}
.section--about   { padding-top: 84px; }
.section--contact { padding-top: 110px; }
.section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 44px;
}
.section__head--split { justify-content: space-between; }
.section__head-group {
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.section__num {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  color: var(--accent);
}
.section__title {
  margin: 0;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.section__aside {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  text-decoration: none;
}
.link-muted {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
}

/* ---- about ---- */
.about__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
}
.lede {
  margin: 0 0 22px;
  font-size: 20px;
  line-height: 1.55;
  letter-spacing: -0.01em;
}
.prose {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--body);
}
.prose:last-child { margin-bottom: 0; }

/* image placeholders (were drag-drop slots in the original) */
.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faint);
  background: var(--card);
  border: 1px solid var(--linex);
}
.placeholder--portrait {
  width: 100%;
  height: 420px;
}
.placeholder--logo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--line);
  font-size: 9px;
}

/* ---- work ---- */
.card-featured {
  text-decoration: none;
  display: block;
  border: 1px solid var(--inv-bg);
  padding: 36px;
  margin-bottom: 20px;
  background: var(--inv-bg);
  color: var(--inv-fg);
}
.card-featured__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 28px;
}
.card-featured__tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}
.card-featured__lang {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--inv-faint);
}
.card-featured__title {
  margin: 0 0 14px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.card-featured__desc {
  margin: 0 0 26px;
  max-width: 660px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--inv-body);
}
.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tag--invert {
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 11px;
  border: 1px solid var(--inv-line);
  color: var(--inv-body);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.card {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  padding: 28px;
  background: var(--card);
  color: var(--fg);
  min-height: 230px;
}
.card__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}
.card__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
}
.card__lang {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}
.card__title {
  margin: 0 0 12px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.18;
  letter-spacing: -0.015em;
}
.card__desc {
  margin: 0 0 auto;
  font-size: 14px;
  line-height: 1.6;
  color: var(--body);
}
.card .tag-row { margin-top: 20px; gap: 7px; }
.tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  color: var(--body);
}

/* ---- stack ---- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--linex);
}
.stack-cell {
  padding: 26px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stack-cell:last-child { border-right: none; }
.stack-cell__label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin-bottom: 18px;
}
.stack-cell__items {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 2.05;
}

/* ---- timeline (experience / education / awards) ---- */
.timeline { border-top: 1px solid var(--linex); }
.timeline__row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.timeline__time {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}
.timeline__time--faint { color: var(--faint); }
.timeline__time-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.timeline__place {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.timeline__place .diamond { font-size: 15px; }
.timeline__title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.timeline__sub {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  margin: 4px 0 12px;
}
.timeline__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--body);
  max-width: 620px;
}
.timeline__add {
  opacity: 0.6;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--muted);
}

/* ---- writing ---- */
.writing-row {
  color: var(--fg);
  text-decoration: none;
  display: grid;
  grid-template-columns: 120px 1fr 24px;
  gap: 24px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.writing-row__date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}
.writing-row__title {
  font-size: 18px;
  letter-spacing: -0.01em;
}
.writing-row__title--draft { color: var(--muted); }
.writing-row__arrow {
  font-family: var(--mono);
  color: var(--accent);
  text-align: right;
}
.writing-row__arrow--faint { color: var(--faint); }

/* ---- contact ---- */
.contact__title {
  margin: 0 0 28px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(32px, 5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 800px;
}
.contact__email {
  font-family: var(--mono);
  font-size: clamp(16px, 2.4vw, 22px);
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-color: var(--accent);
}
.social {
  margin-top: 56px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 13px;
}
.social__link {
  color: var(--fg);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.social__link svg { flex-shrink: 0; }

/* ---- footer ---- */
.footer {
  margin-top: 110px;
  border-top: 1px solid var(--linex);
  padding: 26px 0 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}

/* ---- responsive ---- */
@media (max-width: 860px) {
  .nav__links { gap: 14px; }
  .about__grid { grid-template-columns: 1fr; gap: 32px; }
  .card-grid { grid-template-columns: 1fr; }
  .meta-strip { grid-template-columns: 1fr 1fr; }
  .meta-cell:nth-child(2) { border-right: none; }
  .stack-grid { grid-template-columns: 1fr 1fr; }
  .stack-cell:nth-child(2) { border-right: none; }
}

@media (max-width: 600px) {
  .container, .nav__inner { padding-left: 20px; padding-right: 20px; }
  .nav__links { display: none; }
  .meta-strip { grid-template-columns: 1fr; }
  .meta-cell { border-right: none; }
  .stack-grid { grid-template-columns: 1fr; }
  .stack-cell { border-right: none; }
  .timeline__row,
  .writing-row { grid-template-columns: 1fr; gap: 10px; }
  .writing-row__arrow { display: none; }
}
