/* ==========================================================================
   redesign.css — hero, mobile nav, research grid, project pages
   Layered on top of the existing Grayscale/Bootstrap styles.css.
   Load AFTER styles.css. Everything is namespaced (jt-*) except :root.
   ========================================================================== */

:root {
  /* ---- color ---- */
  --jt-bg:            #000;
  --jt-bg-raised:     #0c0c0c;
  --jt-bg-raised-2:   #151515;
  --jt-line:          rgba(255, 255, 255, 0.12);
  --jt-line-strong:   rgba(255, 255, 255, 0.28);

  --jt-ink:           #fff;
  --jt-ink-75:        rgba(255, 255, 255, 0.75);
  --jt-ink-55:        rgba(255, 255, 255, 0.55);

  --jt-accent:        #64a19d;   /* existing theme primary */
  --jt-accent-hi:     #86bfbb;
  --jt-accent-2:      #5fa666;   /* existing .bg-green */

  --jt-scrim: linear-gradient(to bottom,
                rgba(0,0,0,0.35) 0%,
                rgba(0,0,0,0.70) 70%,
                #000 100%);

  /* ---- type ---- */
  --jt-font-display: "Varela Round", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --jt-font-body:    "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --jt-font-mono:    ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --jt-fs-xs:    0.75rem;
  --jt-fs-sm:    0.875rem;
  --jt-fs-base:  1rem;
  --jt-fs-md:    1.125rem;
  --jt-fs-lg:    1.5rem;
  --jt-fs-xl:    2rem;
  --jt-fs-hero:  clamp(2rem, 7.5vw, 4.5rem);
  --jt-fs-title: clamp(1.75rem, 4.5vw, 3rem);

  --jt-lh-tight: 1.15;
  --jt-lh-body:  1.65;
  --jt-track-hero: 0.28em;   /* the letterspaced masthead name */
  --jt-track-ui:   0.14em;

  /* ---- space ---- */
  --jt-s1: 0.25rem;
  --jt-s2: 0.5rem;
  --jt-s3: 0.75rem;
  --jt-s4: 1rem;
  --jt-s5: 1.5rem;
  --jt-s6: 2rem;
  --jt-s7: 3rem;
  --jt-s8: 4.5rem;
  --jt-s9: 7rem;

  --jt-gutter: clamp(1.25rem, 5vw, 3.5rem);
  --jt-measure: 34rem;          /* readable line length */
  --jt-page-max: 78rem;

  /* ---- surface ---- */
  --jt-radius: 4px;
  --jt-shadow-lift: 0 1.25rem 2.5rem rgba(0, 0, 0, 0.55);
  --jt-nav-h: 4rem;

  /* ---- motion ---- */
  --jt-dur: 220ms;
  --jt-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ==========================================================================
   base
   ========================================================================== */

.jt, .jt *, .jt *::before, .jt *::after { box-sizing: border-box; }

.jt {
  background: var(--jt-bg);
  color: var(--jt-ink);
  font-family: var(--jt-font-body);
  letter-spacing: 0.0625em;
  -webkit-font-smoothing: antialiased;
}

/* zero-specificity base so every .jt-* component rule wins */
.jt :where(a) { color: var(--jt-accent-hi); text-decoration: none; }
.jt :where(a:hover, a:focus-visible) { color: var(--jt-ink); text-decoration: underline; }

.jt :focus-visible {
  outline: 2px solid var(--jt-accent-hi);
  outline-offset: 3px;
}

.jt-wrap {
  max-width: var(--jt-page-max);
  margin-inline: auto;
  padding-inline: var(--jt-gutter);
}

.jt-skip {
  position: absolute;
  left: -9999px;
}
.jt-skip:focus {
  left: var(--jt-s4);
  top: var(--jt-s4);
  z-index: 100;
  padding: var(--jt-s3) var(--jt-s4);
  background: var(--jt-ink);
  color: #000;
}

/* ==========================================================================
   navigation — bar + off-canvas drawer
   ========================================================================== */

.jt-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  min-height: var(--jt-nav-h);
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.92);
  transition: background-color var(--jt-dur) var(--jt-ease),
              border-color var(--jt-dur) var(--jt-ease);
  border-bottom: 1px solid var(--jt-line);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
}
/* Homepage only: the nav starts transparent over the hero video and
   solidifies once the user scrolls past it (JS adds .is-shrunk). Every
   other page has no hero behind the nav, so it stays solid from the start
   — otherwise nav text is unreadable over a light section like Publications. */
body.jt-has-hero .jt-nav:not(.is-shrunk) {
  background: transparent;
  border-bottom-color: transparent;
  -webkit-backdrop-filter: none;
          backdrop-filter: none;
}
body.jt-has-hero .jt-nav:not(.is-shrunk) .jt-nav__links a { color: var(--jt-ink-55); }

.jt-nav__inner {
  width: 100%;
  max-width: var(--jt-page-max);
  margin-inline: auto;
  padding: var(--jt-s3) var(--jt-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--jt-s4);
}

.jt-nav__brand {
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-base);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  color: var(--jt-ink);
}
.jt-nav__brand:hover { text-decoration: none; color: var(--jt-accent-hi); }

/* --- hamburger (mobile only) --- */
.jt-nav__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--jt-s2);
  min-height: 44px;
  min-width: 44px;
  padding: var(--jt-s2) var(--jt-s3);
  background: transparent;
  border: 1px solid var(--jt-line-strong);
  border-radius: var(--jt-radius);
  color: var(--jt-ink);
  font: inherit;
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  cursor: pointer;
}
.jt-nav__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}
.jt-nav__bars span {
  display: block;
  height: 1.5px;
  background: currentColor;
}

/* --- desktop link row --- */
.jt-nav__links {
  display: none;
  align-items: center;
  gap: var(--jt-s2);
  list-style: none;
  margin: 0;
  padding: 0;
}
.jt-nav__links a {
  display: block;
  padding: var(--jt-s3) var(--jt-s4);
  color: var(--jt-ink-75);
  font-size: var(--jt-fs-sm);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  border-bottom: 2px solid transparent;
}
.jt-nav__links a:hover,
.jt-nav__links a:focus-visible { color: var(--jt-ink); text-decoration: none; }
.jt-nav__links a[aria-current="page"] {
  color: var(--jt-ink);
  border-bottom-color: var(--jt-accent);
}
.jt-nav__links a.jt-nav__icon-link {
  display: flex;
  align-items: center;
  padding-inline: var(--jt-s3);
  font-size: var(--jt-fs-base);
}

/* --- the drawer --- */
.jt-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 60;
  width: min(88vw, 22rem);
  display: flex;
  flex-direction: column;
  padding: var(--jt-s4) var(--jt-s5) var(--jt-s7);
  background: var(--jt-bg-raised);
  border-left: 1px solid var(--jt-line);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--jt-dur) var(--jt-ease), visibility var(--jt-dur);
}
.jt-drawer[data-open="true"] { transform: translateX(0); visibility: visible; }

.jt-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  margin-bottom: var(--jt-s5);
}
.jt-drawer__label {
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  color: var(--jt-ink-55);
}
.jt-drawer__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--jt-line-strong);
  border-radius: var(--jt-radius);
  color: var(--jt-ink);
  font-size: var(--jt-fs-md);
  line-height: 1;
  cursor: pointer;
}

.jt-drawer__links {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
}
.jt-drawer__links a {
  display: block;
  padding: var(--jt-s4) 0;
  border-bottom: 1px solid var(--jt-line);
  color: var(--jt-ink);
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-lg);
  letter-spacing: 0.04em;
}
.jt-drawer__links a:hover { text-decoration: none; color: var(--jt-accent-hi); }
.jt-drawer__links a[aria-current="page"] { color: var(--jt-accent-hi); }

.jt-drawer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--jt-s4);
  margin-top: auto;
  padding-top: var(--jt-s6);
}
.jt-drawer__meta a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--jt-ink-75);
  font-size: var(--jt-fs-sm);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
}

.jt-scrim-el {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--jt-dur) var(--jt-ease), visibility var(--jt-dur);
}
.jt-scrim-el[data-open="true"] { opacity: 1; visibility: visible; }

body.jt-nav-open { overflow: hidden; }

@media (min-width: 62rem) {
  .jt-nav__toggle { display: none; }
  .jt-nav__links { display: flex; }
  .jt-drawer,
  .jt-scrim-el { display: none; }
}

/* ==========================================================================
   hero / masthead
   ========================================================================== */

.jt-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 100svh;
  display: grid;
  background: var(--jt-bg);
}

.jt-hero__video {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* poster placeholder shows through until the file loads */
  background: #0a0a0a center/cover no-repeat;
}
.jt-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--jt-scrim);
}

.jt-hero__inner {
  max-width: var(--jt-page-max);
  width: 100%;
  margin-inline: auto;
  padding: calc(var(--jt-nav-h) + var(--jt-s7)) var(--jt-gutter) var(--jt-s8);
  display: flex;
  flex-direction: column;
  gap: var(--jt-s5);
}

.jt-hero__name {
  margin: 0;
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-hero);
  line-height: var(--jt-lh-tight);
  letter-spacing: var(--jt-track-hero);
  text-transform: uppercase;
  /* keep the theme's top-lit gradient on the name */
  background: linear-gradient(rgba(255,255,255,0.95), rgba(255,255,255,0.62));
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  text-wrap: balance;
}

.jt-hero__role {
  margin: 0;
  max-width: 42rem;
  font-size: var(--jt-fs-md);
  line-height: var(--jt-lh-body);
  color: var(--jt-ink-75);
  font-weight: 400;
}
.jt-hero__role a { color: var(--jt-ink); text-decoration: underline; text-underline-offset: 3px; }
.jt-hero__role a:hover { color: var(--jt-accent-hi); }

.jt-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--jt-s3);
}
.jt-btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 var(--jt-s5);
  border: 1px solid var(--jt-line-strong);
  border-radius: var(--jt-radius);
  background: transparent;
  color: var(--jt-ink);
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
}
.jt-btn:hover, .jt-btn:focus-visible {
  text-decoration: none;
  border-color: var(--jt-accent);
  background: rgba(100, 161, 157, 0.14);
  color: var(--jt-ink);
}
.jt-btn--solid {
  background: var(--jt-accent);
  border-color: var(--jt-accent);
  color: #04100f;
}
.jt-btn--solid:hover, .jt-btn--solid:focus-visible {
  background: var(--jt-accent-hi);
  border-color: var(--jt-accent-hi);
  color: #04100f;
}

/* --- anchored to the lower left --- */
.jt-hero--anchored .jt-hero__inner {
  justify-content: flex-end;
  min-height: 100svh;
}
.jt-hero--anchored .jt-hero__name {
  letter-spacing: 0.18em;
  max-width: 18ch;
}
.jt-hero--anchored .jt-hero__rule {
  width: 4rem;
  height: 2px;
  background: var(--jt-accent);
  border: 0;
  margin: 0;
}

/* ==========================================================================
   research grid
   ========================================================================== */

.jt-section {
  padding-block: var(--jt-s8) var(--jt-s9);
}
.jt-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--jt-s4);
  margin-bottom: var(--jt-s6);
  padding-bottom: var(--jt-s4);
  border-bottom: 1px solid var(--jt-line);
}
.jt-section__title {
  margin: 0;
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-xl);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.jt-section__note {
  margin: 0;
  font-size: var(--jt-fs-sm);
  color: var(--jt-ink-55);
}

.jt-grid {
  display: grid;
  gap: var(--jt-s5);
  grid-template-columns: 1fr;
  list-style: none;
  margin: 0;
  padding: 0;
}
@media (min-width: 40rem) {
  .jt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 62rem) {
  .jt-grid--roomy { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--jt-s6); }
}

/* --- card --- */
.jt-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--jt-s3);
  padding: 0;
  background: var(--jt-bg-raised);
  border: 1px solid var(--jt-line);
  border-radius: var(--jt-radius);
  overflow: hidden;
  color: var(--jt-ink);
  transition: transform var(--jt-dur) var(--jt-ease),
              box-shadow var(--jt-dur) var(--jt-ease),
              border-color var(--jt-dur) var(--jt-ease);
}
.jt-card:hover, .jt-card:focus-visible { text-decoration: none; color: var(--jt-ink); }

.jt-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--jt-bg-raised-2) center/cover no-repeat;
  overflow: hidden;
}
.jt-card__media video,
.jt-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
/* small "loops on hover" affordance, desktop only */
.jt-card__cue {
  position: absolute;
  right: var(--jt-s3);
  bottom: var(--jt-s3);
  display: none;
  padding: 2px var(--jt-s2);
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--jt-line);
  border-radius: 2px;
  font-family: var(--jt-font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--jt-ink-75);
}

.jt-card__body {
  padding: 0 var(--jt-s4) var(--jt-s5);
}
.jt-card__title {
  margin: 0;
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-md);
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-wrap: pretty;
}

@media (hover: hover) and (pointer: fine) {
  .jt-card__cue { display: block; }
  .jt-card:hover,
  .jt-card:focus-visible {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--jt-shadow-lift);
    border-color: var(--jt-line-strong);
    z-index: 2;
  }
  .jt-card:hover .jt-card__cue,
  .jt-card:focus-visible .jt-card__cue { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .jt-card { transition: box-shadow var(--jt-dur) linear; }
  .jt-card:hover, .jt-card:focus-visible { transform: none; }
  .jt-drawer, .jt-scrim-el { transition: none; }
}

/* ==========================================================================
   project detail page
   ========================================================================== */

.jt-project { padding-bottom: var(--jt-s9); }

.jt-back {
  display: inline-flex;
  align-items: center;
  gap: var(--jt-s2);
  min-height: 44px;
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  color: var(--jt-ink-55);
}
.jt-back:hover { color: var(--jt-ink); text-decoration: none; }

.jt-project__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--jt-bg-raised-2) center/cover no-repeat;
  border: 1px solid var(--jt-line);
  border-radius: var(--jt-radius);
  overflow: hidden;
}
.jt-project__media video,
.jt-project__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.jt-caption {
  margin: var(--jt-s3) 0 0;
  font-family: var(--jt-font-mono);
  font-size: var(--jt-fs-xs);
  line-height: 1.5;
  color: var(--jt-ink-55);
}

.jt-project__title {
  margin: 0;
  font-family: var(--jt-font-display);
  font-size: var(--jt-fs-title);
  line-height: var(--jt-lh-tight);
  letter-spacing: 0.04em;
  text-wrap: balance;
}
.jt-project__kicker {
  margin: 0 0 var(--jt-s3);
  font-family: var(--jt-font-mono);
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  color: var(--jt-accent-hi);
}

.jt-prose {
  max-width: var(--jt-measure);
  font-size: var(--jt-fs-base);
  line-height: var(--jt-lh-body);
  color: var(--jt-ink-75);
}
.jt-prose p { margin: 0 0 var(--jt-s5); }
.jt-prose p:last-child { margin-bottom: 0; }
.jt-prose strong { color: var(--jt-ink); font-weight: 700; }

.jt-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--jt-s3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.jt-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--jt-s2);
  min-height: 44px;
  padding: 0 var(--jt-s4);
  border: 1px solid var(--jt-line-strong);
  border-radius: var(--jt-radius);
  color: var(--jt-ink);
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
}
.jt-links a:hover, .jt-links a:focus-visible {
  text-decoration: none;
  border-color: var(--jt-accent);
  background: rgba(100, 161, 157, 0.14);
}
.jt-links__kind {
  font-family: var(--jt-font-mono);
  color: var(--jt-accent-hi);
}

/* --- optional layout: stacked, full-bleed hero (hero_layout: stacked) --- */
.jt-project--stacked .jt-project__hero {
  position: relative;
  aspect-ratio: 16 / 9;
  max-height: 70svh;
  overflow: hidden;
  background: var(--jt-bg-raised-2) center/cover no-repeat;
}
.jt-project--stacked .jt-project__hero video,
.jt-project--stacked .jt-project__hero img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.jt-project--stacked .jt-project__hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.15) 40%, rgba(0,0,0,0.95) 100%);
}
.jt-project--stacked .jt-project__head {
  position: relative;
  margin-top: -6rem;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--jt-s4);
}
.jt-project--stacked .jt-project__body {
  display: grid;
  gap: var(--jt-s6);
  margin-top: var(--jt-s7);
}
@media (min-width: 62rem) {
  .jt-project--stacked .jt-project__body {
    grid-template-columns: minmax(0, 1fr) 16rem;
    gap: var(--jt-s8);
    align-items: start;
  }
  .jt-project--stacked .jt-project__aside { position: sticky; top: calc(var(--jt-nav-h) + var(--jt-s5)); }
}

/* --- default layout: split, media beside the write-up --- */
.jt-project--split .jt-project__body {
  display: grid;
  gap: var(--jt-s6);
  padding-top: calc(var(--jt-nav-h) + var(--jt-s6));
}
@media (min-width: 62rem) {
  .jt-project--split .jt-project__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: var(--jt-s8);
    align-items: start;
  }
  .jt-project--split .jt-project__mediacol { position: sticky; top: calc(var(--jt-nav-h) + var(--jt-s5)); }
}
.jt-project--split .jt-project__textcol {
  display: flex;
  flex-direction: column;
  gap: var(--jt-s5);
}

/* --- next / prev strip, shared --- */
.jt-more {
  margin-top: var(--jt-s8);
  padding-top: var(--jt-s5);
  border-top: 1px solid var(--jt-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--jt-s4);
  font-size: var(--jt-fs-sm);
  color: var(--jt-ink-55);
}
.jt-aside__label {
  margin: 0 0 var(--jt-s3);
  font-family: var(--jt-font-mono);
  font-size: var(--jt-fs-xs);
  letter-spacing: var(--jt-track-ui);
  text-transform: uppercase;
  color: var(--jt-ink-55);
}