/* =========================================================================
   joshclinton.com — design system mockup
   Aesthetic: Arts & Crafts / American mission, Mackintosh rectilinear restraint.
   Palette: Vanderbilt warm neutrals + gold keyline ornament + oxblood accent.
   Governing principle: structure is the ornament.
   ========================================================================= */

:root {
  /* Ground + ink (Vanderbilt core) */
  --ground:        #F5F3EF;   /* Cream — page ground */
  --ground-panel:  #E7DECB;   /* Sand (slightly deepened) — occasional panels */
  --ink:           #1C1C1C;   /* Vanderbilt Black — body text */
  --ink-soft:      #5E544472;

  /* Structure + ornament */
  --oak:           #946E24;   /* Vanderbilt Oak — structural brown, labels */
  --gold:          #CFAE70;   /* Vanderbilt Gold — keyline ornament only */
  --oxblood:       #8B3A2F;   /* deep accent — links, active states */
  --oxblood-dim:   #6F2C23;

  /* Derived */
  --meta:          #6B5D4A;   /* warm gray for secondary text */
  --rule-ink:      rgba(28, 28, 28, 0.16);
  --rule-gold:     var(--gold);

  /* Type */
  --serif: "Sorts Mill Goudy", Georgia, "Times New Roman", serif;

  /* Rhythm */
  --measure: 42rem;           /* prose measure */
  --gutter: 2.5rem;
  --page-max: 64rem;
}

/* ---- reset-ish ---------------------------------------------------------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  font-feature-settings: "kern" 1, "liga" 1;
}
img { max-width: 100%; display: block; }
a { color: var(--oxblood); text-decoration: none; }
a:hover { color: var(--oxblood-dim); text-decoration: underline; text-underline-offset: 3px; }

/* No rounded corners, no shadows, no gradients — anywhere. */

/* ---- layout shell ------------------------------------------------------- */
.page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---- masthead ----------------------------------------------------------- */
.masthead {
  padding: 2.4rem 0 1.1rem;
  border-bottom: 1px solid var(--rule-gold);
}
.wordmark {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 1.5rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}
.wordmark .peg {            /* the single allowed geometric mark: inlaid square */
  width: 0.62rem;
  height: 0.62rem;
  background: var(--gold);
  flex: none;
  position: relative;
  top: -0.05rem;
}
.wordmark .name { font-weight: 400; }
.wordmark .role {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--meta);
  text-transform: uppercase;
}

/* ---- nav ---------------------------------------------------------------- */
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  padding: 0.9rem 0 0;
}
.nav a {
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--oxblood); text-decoration: none; border-bottom-color: var(--gold); }
.nav a.active { color: var(--oxblood); border-bottom-color: var(--oxblood); }

/* ---- generic section heads --------------------------------------------- */
.section-title {
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--oak);
  margin: 0 0 1.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule-ink);
  font-weight: 400;
}

/* ======================================================================== */
/*  ABOUT / LANDING                                                          */
/* ======================================================================== */
.about {
  display: grid;
  grid-template-columns: 16rem 1fr;
  gap: 3rem;
  padding: 3rem 0 1rem;
  align-items: start;
}
.about .portrait {
  border: 1px solid var(--oak);
  padding: 6px;
  background: var(--ground);
}
.about .portrait img { width: 100%; }
.about h1 {
  font-size: 2.5rem;
  line-height: 1.1;
  margin: 0 0 0.4rem;
  font-weight: 400;
}
.about .titles {
  color: var(--oak);
  font-size: 1.02rem;
  line-height: 1.45;
  margin: 0 0 1.6rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--rule-gold);
}
.about p { max-width: var(--measure); margin: 0 0 1.1rem; }
.about .quicklinks {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}
.about .quicklinks a {
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--oak);
  padding: 0.5rem 0.7rem;
  color: var(--ink);
  text-align: center;
}
.about .quicklinks a:hover { background: var(--oxblood); color: var(--ground); border-color: var(--oxblood); text-decoration: none; }

/* ======================================================================== */
/*  RESEARCH — the centerpiece                                               */
/* ======================================================================== */
.research { padding: 2.6rem 0; }
.research-intro { color: var(--meta); margin: 0 0 1.2rem; }

/* data & code links (replaces a standalone Data page) */
.data-links {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.7rem;
  margin: 0 0 2rem; font-size: 0.8rem;
}
.data-links .label {
  color: var(--meta); letter-spacing: 0.12em; text-transform: uppercase;
  margin-right: 0.2rem;
}
.data-links a {
  letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap;
  border: 1px solid var(--oak); padding: 0.4rem 0.8rem; color: var(--ink);
}
.data-links a:hover { background: var(--oxblood); color: var(--ground); border-color: var(--oxblood); text-decoration: none; }
/* on phones, drop the label to its own line so both chips have room to wrap */
@media (max-width: 760px) {
  .data-links .label { flex-basis: 100%; margin-bottom: 0.1rem; }
}

.research-grid {
  display: grid;
  grid-template-columns: 15rem 1fr;
  gap: 3rem;
  align-items: start;
}
/* keep grid/flex children from blowing the layout wider than the screen */
.research-grid > * { min-width: 0; }

/* topic slat menu (desktop: left vertical) */
.topics { position: sticky; top: 1.5rem; }
.topics h2 {
  font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--meta); margin: 0 0 0.8rem; font-weight: 400;
}
.topic {
  display: flex; justify-content: space-between; align-items: baseline;
  width: 100%; text-align: left;
  background: none; border: 0; border-left: 3px solid transparent;
  font-family: var(--serif); font-size: 1rem; color: var(--ink);
  padding: 0.42rem 0.7rem; cursor: pointer; letter-spacing: 0.01em;
}
.topic .count { color: var(--meta); font-size: 0.82rem; }
.topic--cat { text-transform: capitalize; }
.topic--working { margin-bottom: 0.6rem; padding-bottom: 0.7rem; border-bottom: 1px solid var(--rule-ink); }
.topic:hover { color: var(--oxblood); border-left-color: var(--gold); }
.topic.active { color: var(--oxblood); border-left-color: var(--oxblood); }
.topic.active .count { color: var(--oxblood); }

/* paper list */
.papers { border-top: 1px solid var(--rule-ink); }
.paper {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--rule-ink);
}
.paper.is-featured .paper-title::after {
  content: "▪";
  color: var(--gold);
  margin-left: 0.5rem;
  font-size: 0.7em;
  vertical-align: middle;
}
.paper-title {
  font-size: 1.18rem; line-height: 1.3; cursor: pointer;
  display: block; background: none; border: 0; text-align: left;
  font-family: var(--serif); color: var(--ink); padding: 0; width: 100%;
}
.paper-title:hover { color: var(--oxblood); }
.paper-flag {
  display: inline-block; margin-bottom: 0.4rem;
  font-size: 0.64rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ground); background: var(--oak); padding: 0.16rem 0.55rem;
}
.paper-title--static { cursor: default; }
.paper-title--static:hover { color: var(--ink); }
.paper-award { color: var(--oxblood); font-size: 0.84rem; margin: 0.5rem 0 0; letter-spacing: 0.02em; }
.paper-award::before { content: "\2605"; color: var(--gold); margin-right: 0.4rem; }
.paper-note { color: var(--oak); font-size: 0.84rem; font-style: italic; margin: 0.5rem 0 0; }
.paper-meta { color: var(--meta); font-size: 0.92rem; margin: 0.3rem 0 0; }
.paper-meta .venue { font-style: italic; }
.paper-topics { margin-top: 0.5rem; }
.tag {
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--oak); border: 1px solid var(--rule-gold);
  padding: 0.12rem 0.5rem; margin-right: 0.4rem;
}
.paper-abstract {
  max-height: 0; overflow: hidden;
  transition: none;                 /* no animation, per brief */
  color: var(--ink);
}
.paper.open .paper-abstract {
  max-height: none;
  margin-top: 0.9rem;
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
  max-width: var(--measure);
}
.paper-actions { margin-top: 0.8rem; display: flex; gap: 1.1rem; flex-wrap: wrap; }
.paper-actions a {
  font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--oak);
}
.paper-actions a:hover { color: var(--oxblood); }

.result-count { color: var(--meta); font-size: 0.85rem; margin: 0 0 1rem; letter-spacing: 0.04em; }

/* ======================================================================== */
/*  TEACHING                                                                 */
/* ======================================================================== */
.teaching { padding: 2.6rem 0; max-width: 56rem; }
.teaching-intro { color: var(--meta); margin: 0 0 2rem; }

.course-row {
  display: grid;
  grid-template-columns: 13rem 1fr;
  gap: 1.9rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--rule-ink);
  align-items: start;
}
.course-row:first-of-type { border-top: 1px solid var(--rule-gold); }

/* left-hand visual: framed logo/photo, or a course-number tile */
.course-figure { border: 1px solid var(--oak); background: #fff; padding: 6px; }
.course-figure img { display: block; width: 100%; }
.course-tile {
  border: 1px solid var(--oak); background: var(--ground-panel);
  aspect-ratio: 3 / 2; display: flex; align-items: center; justify-content: center;
}
.course-tile .ct-num {
  color: var(--oak); letter-spacing: 0.14em; font-size: 0.95rem; text-transform: uppercase;
}

.course-cap {
  margin: 0.5rem 0 0; color: var(--meta); font-style: italic;
  font-size: 0.78rem; line-height: 1.45;
}
.course-cap a { font-style: normal; letter-spacing: 0.06em; text-transform: uppercase;
  font-size: 0.72rem; white-space: nowrap; }

.course-term {
  color: var(--oak); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; margin: 0 0 0.3rem;
}
.course-name { font-size: 1.22rem; font-weight: 400; margin: 0; line-height: 1.3; }
.course-meta { color: var(--meta); font-size: 0.9rem; margin: 0.35rem 0 0; }
.course-num { color: var(--ink); letter-spacing: 0.04em; }
.course-badge {
  display: inline-block; margin-left: 0.6rem;
  font-size: 0.66rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ground); background: var(--oxblood); padding: 0.16rem 0.5rem;
  vertical-align: 0.12em;
}
.course-note {
  margin: 0.5rem 0 0; max-width: var(--measure);
  font-style: italic; color: var(--oak); font-size: 0.92rem;
}
.course-note a { font-style: normal; font-size: 0.78rem; letter-spacing: 0.06em;
  text-transform: uppercase; white-space: nowrap; }
.course-desc { margin: 0.6rem 0 0; max-width: var(--measure); color: var(--ink); }

@media (max-width: 760px) {
  .course-row { grid-template-columns: 1fr; gap: 0.9rem; }
  .course-media { max-width: 13rem; }
}

/* ======================================================================== */
/*  WRITING & TALKS                                                          */
/* ======================================================================== */
.writing { padding: 2.6rem 0; max-width: 52rem; }
.wt-group { margin-bottom: 2.6rem; }
.wt-group-title {
  font-size: 0.82rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--oak); font-weight: 400; margin: 0 0 1rem;
  padding-bottom: 0.45rem; border-bottom: 1px solid var(--rule-gold);
}
.wt-item { padding: 0.9rem 0; border-bottom: 1px solid var(--rule-ink); }
.wt-title { font-size: 1.14rem; line-height: 1.3; }
.wt-meta { color: var(--meta); font-size: 0.86rem; margin: 0.25rem 0 0;
  letter-spacing: 0.04em; text-transform: uppercase; }
.wt-blurb { margin: 0.45rem 0 0; max-width: var(--measure); }

/* ---- visual card grid --------------------------------------------------- */
.wt-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.6rem;
}
.wt-card {
  border: 1px solid var(--oak);
  background: var(--ground);
  display: flex; flex-direction: column;
  text-align: left;
}
a.wt-card { color: var(--ink); text-decoration: none; }
a.wt-card:hover { text-decoration: none; }
.wt-card .thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--rule-gold);
  background: var(--ground-panel);
  cursor: pointer;
}
.wt-card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.wt-card .thumb.contain { background: var(--ground-panel); }
.wt-card .thumb.contain img { object-fit: contain; }
.wt-card .thumb iframe { width: 100%; height: 100%; border: 0; display: block; }

/* geometric play mark for video cards */
.wt-card .play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.wt-card .play span {
  width: 3.2rem; height: 3.2rem;
  background: rgba(28,28,28,0.62);
  display: flex; align-items: center; justify-content: center;
}
.wt-card .play span::before {
  content: ""; display: block;
  border-style: solid;
  border-width: 0.6rem 0 0.6rem 1rem;
  border-color: transparent transparent transparent var(--ground);
  margin-left: 0.2rem;
}
.wt-card:hover .play span { background: var(--oxblood); }

/* typographic tile when there is no image */
.wt-card .thumb.tile { display: flex; align-items: center; justify-content: center; }
.wt-card .thumb.tile .tile-outlet {
  font-size: 1.4rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--oak);
}

.wt-card .body { padding: 0.8rem 0.95rem 1rem; flex: 1; }
.wt-card .ct { font-size: 1.04rem; line-height: 1.28; display: block; }
a.wt-card:hover .ct { color: var(--oxblood); }
.wt-card .cm {
  color: var(--meta); font-size: 0.74rem; margin: 0.4rem 0 0;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.wt-card .cb { margin: 0.55rem 0 0; font-size: 0.92rem; color: var(--ink); }

.wt-note { color: var(--meta); font-style: italic; max-width: var(--measure);
  margin: -0.4rem 0 1.3rem; font-size: 0.92rem; }
.wt-more { margin-top: 1.2rem; }
.wt-more a { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; }

/* ======================================================================== */
/*  PERSONAL (section on the About page)                                     */
/* ======================================================================== */
/* standalone prose page (Personal, and future text pages) */
.prose-page { padding: 2.6rem 0; max-width: 46rem; }
.prose-page p { max-width: var(--measure); margin: 0 0 1.1rem; }

/* image + text in aligned columns, alternating sides (no text wrapping under images) */
.life-row {
  display: grid;
  grid-template-columns: 15rem 1fr;
  gap: 2.4rem;
  align-items: start;
  margin: 0 0 2.6rem;
}
.life-row.reverse { grid-template-columns: 1fr 15rem; }
.life-row.big-img { grid-template-columns: 20rem 1fr; }
.life-row.big-img.reverse { grid-template-columns: 1fr 20rem; }
.life-row.reverse .life-img  { grid-column: 2; grid-row: 1; }
.life-row.reverse .life-text { grid-column: 1; grid-row: 1; }
.life-img { margin: 0; }
.life-img .frame { border: 1px solid var(--oak); padding: 6px; background: #fff; }
.life-img img { display: block; width: 100%; }
.life-img figcaption {
  color: var(--meta); font-style: italic; font-size: 0.82rem;
  margin-top: 0.5rem; line-height: 1.45;
}
.life-text p { margin: 0 0 1.1rem; }
.life-text p:last-child { margin-bottom: 0; }
.life-close { max-width: var(--measure); margin: 0; }

@media (max-width: 760px) {
  .life-row, .life-row.reverse, .life-row.big-img, .life-row.big-img.reverse { grid-template-columns: 1fr; gap: 1.2rem; }
  .life-row.reverse .life-img, .life-row.reverse .life-text { grid-column: auto; grid-row: auto; }
  .life-img { max-width: 15rem; }
}

.art-figure { margin: 2.2rem 0; max-width: 40rem; }
.art-figure .frame { border: 1px solid var(--oak); padding: 6px; background: var(--ground); }
.art-figure img { display: block; width: 100%; }
.art-figure figcaption {
  color: var(--meta); font-style: italic; font-size: 0.88rem;
  margin-top: 0.6rem; max-width: var(--measure); line-height: 1.5;
}

/* offset figures that alternate left/right with text wrapping around them */
.prose-page::after { content: ""; display: block; clear: both; }
.side-figure { max-width: 17rem; }
.side-figure.left  { float: left;  margin: 0.4rem 2rem 1.1rem 0; }
.side-figure.right { float: right; margin: 0.4rem 0 1.1rem 2rem; }
.side-figure.clear { clear: both; }
.side-figure .frame { border: 1px solid var(--oak); padding: 6px; background: #fff; }
.side-figure img { display: block; width: 100%; }
.side-figure figcaption {
  color: var(--meta); font-style: italic; font-size: 0.82rem;
  margin-top: 0.5rem; line-height: 1.45;
}
.side-figure.placeholder .frame {
  background: var(--ground-panel); aspect-ratio: 4 / 3;
  display: flex; align-items: center; justify-content: center; padding: 1rem;
}
.side-figure.placeholder .ph {
  color: var(--oak); text-align: center; font-size: 0.82rem;
  letter-spacing: 0.08em; text-transform: uppercase; line-height: 1.6;
}
@media (max-width: 760px) {
  .side-figure.left, .side-figure.right { float: none; max-width: 100%; margin: 1.3rem 0; }
}

.personal {
  margin-top: 3rem; padding-top: 2.2rem;
  border-top: 1px solid var(--rule-gold);
}
.personal h2 {
  font-size: 1.05rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--oak); font-weight: 400; margin: 0 0 1.3rem;
}
.personal p { max-width: var(--measure); margin: 0 0 1.1rem; }

/* ---- footer ------------------------------------------------------------- */
.foot {
  margin-top: 4rem; padding: 1.6rem 0 3rem;
  border-top: 1px solid var(--rule-gold);
  color: var(--meta); font-size: 0.82rem; letter-spacing: 0.06em;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}

/* a quiet banner marking these as design mockups */
.mock-note {
  background: var(--ground-panel);
  border: 1px solid var(--oak);
  color: var(--ink);
  font-size: 0.8rem; letter-spacing: 0.04em;
  padding: 0.55rem 0.9rem; margin: 1.2rem 0 0;
}

/* ======================================================================== */
/*  RESPONSIVE — one source of truth, layout branches by width               */
/* ======================================================================== */
@media (max-width: 760px) {
  :root { --gutter: 1.25rem; }
  html, body { overflow-x: hidden; }   /* contain stray horizontal overflow on phones */
  body { font-size: 18px; }

  .about { grid-template-columns: 1fr; gap: 1.6rem; padding-top: 1.8rem; }
  .about .portrait { max-width: 14rem; }
  .about h1 { font-size: 2rem; }

  /* Research: topics become a horizontal scroll row above the list */
  .research-grid { grid-template-columns: 1fr; gap: 1.4rem; }
  .topics { position: static; }
  .topics .topic-list {
    display: flex; flex-wrap: wrap; gap: 0.3rem 1.1rem; padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--rule-ink);
  }
  .topic {
    flex: none; width: auto; gap: 0.45rem; margin: 0;
    border-left: 0; border-bottom: 2px solid transparent;
    padding: 0.3rem 0; white-space: nowrap;
  }
  .topic--working { border-bottom: 2px solid transparent; }  /* drop the desktop separator on phones */
  .topic:hover, .topic.active { border-left: 0; }
  .topic.active { border-bottom-color: var(--oxblood); }
  .topic:hover { border-bottom-color: var(--gold); }

  .nav { gap: 1rem; }
  .wordmark { flex-wrap: wrap; gap: 0.5rem; }
}