/* ==========================================================================
   Etan Krivorot - portfolio
   Layout + typography modelled on a classic portfolio grid:
   fixed left sidebar (name, pages, project list) + content column.
   ========================================================================== */

:root {
  --text: #000;
  --heading: #222;
  --muted: #999;
  --rule: #000;
  --bg: #fff;
  --sans: helvetica, "Helvetica Neue", Arial, sans-serif;
  --logo: "Raleway", helvetica, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  /* never break words across lines */
  hyphens: manual;
  -webkit-hyphens: manual;
  overflow-wrap: normal;
  word-break: normal;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ---------- page frame -------------------------------------------------- */

.site {
  display: flex;
  align-items: flex-start;
  margin: 0 5%;
}

.sidebar {
  position: sticky;
  top: 0;
  flex: 0 0 19%;
  min-width: 170px;
  max-height: 100vh;
  overflow-y: auto;
  padding: 60px 24px 40px 0;
  scrollbar-width: none;
}
.sidebar::-webkit-scrollbar { display: none; }

main {
  flex: 1 1 auto;
  min-width: 0;
  padding-left: 1%;
  animation: fade-in .7s ease both;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ---------- sidebar ----------------------------------------------------- */

.sidebar .logo {
  display: block;
  font-family: var(--logo);
  font-weight: 300;
  font-size: clamp(28px, 3.1vw, 46px);
  line-height: 1.04;
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--heading);
  padding-bottom: 20px;
}

.sidebar nav { padding-top: 25px; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }

.sidebar a {
  font-size: 14px;
  line-height: 18px;
  color: var(--muted);
  transition: color .2s;
}
.sidebar a:hover,
.sidebar a.active { color: var(--heading); }

.pages li { margin-bottom: 21px; }

.gallery-title {
  margin: 30px 0 18px;
}
.gallery-title a {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--heading);
}

.projects li { margin-bottom: 7px; }

.nav-toggle { display: none; }

/* ---------- home: project grid ----------------------------------------- */

.project-covers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px 8px;
  padding-top: 40px;
}

.project-cover { display: block; }

.cover-image {
  aspect-ratio: 1.27;
  overflow: hidden;
  background: #f4f4f4;
}
.cover-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity .3s, transform .6s;
}
.project-cover:hover .cover-image img { opacity: .85; transform: scale(1.02); }

.project-cover .details { margin-top: 9px; }
.project-cover .title {
  font-size: 14px;
  line-height: 18px;
  color: var(--heading);
}
.project-cover .date {
  margin-top: 3px;   /* label sits just under the title */
  font-size: 12px;
  font-weight: 700;
  line-height: 17px;
  color: var(--muted);
}

/* ---------- page header ------------------------------------------------- */

.page-header {
  padding: 80px 0 40px;
  text-align: center;
}
.page-header h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--heading);
}
.page-header .subtitle {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 24px;
  color: var(--muted);
}
.page-header .subtitle + .subtitle { margin-top: 0; }

/* project pages: no bold type */
.project-page .page-header h1,
.project-page .content strong,
.project-page .content b,
.project-page .content th { font-weight: 400; }

/* ---------- content: converted Readymag layout -------------------------
   Each page is a tree of .stack (top-to-bottom) and .row (side-by-side)
   blocks. Every .cell keeps its original horizontal position (--l) and
   width (--w) as a percentage of its parent, plus the vertical spacing (--t).
   ---------------------------------------------------------------------- */

.content {
  container-type: inline-size;
  font-size: clamp(12.5px, 1.4cqw, 15px);
  line-height: 1.6;
  padding-bottom: 20px;
}

.stack > .cell {
  width: var(--w, 100%);
  margin-left: var(--l, 0);
  margin-top: max(12px, var(--t, 0px));
}
.stack > .cell:first-child { margin-top: 0; }

.row {
  display: flex;
  align-items: flex-start;
}
.row > .cell {
  flex: none;
  width: var(--w);
  margin-left: var(--l, 0);
  margin-top: var(--t, 0);
}

/* text */
.text p { margin: 0; }
.text p.gap { height: .8em; }
.text.caption { font-size: .85em; line-height: 1.45; color: #555; }
.text.lead { font-size: 1.08em; }
.text strong { font-weight: 700; }
/* image + text pairs: trim the line spacing above the first / below the last line
   so the lettering lines up with the image edges */
.row.pair .text { text-box: trim-both cap alphabetic; }
.text p.eq { padding-left: 3em; text-align: left; }   /* indented calculation lines */

/* contact: label / value list with even spacing */
.contact-list {
  display: grid;
  grid-template-columns: 25% 1fr;
  column-gap: 4%;
  row-gap: 1.1em;
  margin: 0;
}
.contact-list dt, .contact-list dd { margin: 0; }
.contact-list dd { text-align: center; }

/* photography: one fixed spacing everywhere - caption tucked under its photos,
   the same gap from every caption to the next group (scales with the page width) */
.p-photography .stack > .cell { margin-top: 2.4cqw; }
.p-photography .stack > .cell:has(> .text.caption) { margin-top: 8px; }
.p-photography .stack > .cell:first-child,
.p-photography .row > .cell { margin-top: 0; }

/* cube: paragraphs beside an image or turntable read as a compact, squarer block,
   centred on the image (desktop only; on phones everything stacks) */
@media (min-width: 761px) {
  .p-cube .row:has(> .cell > .text):has(> .cell > .img, > .cell > .shots) { align-items: center; }
  .p-cube .row:has(> .cell > .text):has(> .cell > .img, > .cell > .shots) > .cell { margin-top: 0; }
  .p-cube .row:has(> .cell > .img, > .cell > .shots) > .cell:has(> .text) {
    width: min(var(--w), 22em);
    margin-top: 0;
    margin-left: max(var(--l), 8%);
  }
  .p-cube .row:has(> .cell > .img, > .cell > .shots) > .cell > .text { font-size: 1.2em; line-height: 1.55; }
  /* turntables carry their hint below them: match that space so the text centres on the cube */
  .p-cube .row:has(> .cell > .shots) > .cell:has(> .text) { margin-bottom: 1.6em; }
}

/* ---------- CV (from the LaTeX resume) ---------------------------------- */
.cv {
  max-width: 760px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.45;
  color: var(--text);
}
.cv a { text-decoration: underline; text-underline-offset: 2px; }
.cv a:hover { color: var(--muted); }
.cv-contact {
  margin: -24px 0 6px;
  text-align: center;
  font-size: 13px;
  color: #444;
}
.cv-contact .sep { margin: 0 .45em; color: var(--muted); }
.cv-section h2 {
  margin: 26px 0 10px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--rule);
  font-size: 18px;
  font-weight: 400;
  font-variant: small-caps;
  letter-spacing: .03em;
  color: var(--heading);
}
.cv-entry { margin: 0 0 12px 1.1em; }
.cv-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 4px 16px;
}
.cv-row > :last-child { flex: none; text-align: right; }
.cv-sub { font-size: 13px; }
.cv ul { margin: 4px 0 0; padding-left: 1.6em; }
.cv li { margin-bottom: 3px; font-size: 13.5px; }
.cv-skill { margin: 0 0 4px 1.1em; font-size: 13.5px; }

/* extra room under the title on the G-Code page */
.p-gcode { padding-top: 50px; }

.section-title {
  margin: 0;
  font-size: 1.55em;
  font-weight: 400;
  line-height: 1.25;
  color: var(--heading);
}

.a-left    { text-align: left; }
.a-center  { text-align: center; }
.a-right   { text-align: right; }
.a-justify { text-align: justify; text-justify: inter-word; hyphens: manual; -webkit-hyphens: manual; }

.content a { text-decoration: underline; text-underline-offset: 2px; }
.content a:hover { color: var(--muted); }

/* images (with optional labels / leader lines drawn on top) */
.img { position: relative; margin: 0; }
.img > img { display: block; width: 100%; height: auto; }

.img .label {
  position: absolute;
  font-size: .78em;
  line-height: 1.25;
  white-space: nowrap;
}
.img .rule { position: absolute; pointer-events: none; }
.img .rule::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  background: var(--c);
  transform: rotate(var(--a));
}
.img .rule.bridge { z-index: 1; }
.img .frame {
  position: absolute;
  border: var(--b) solid var(--c);
  pointer-events: none;
}

/* slideshows */
.slideshow { position: relative; overflow: hidden; }
.ss-track { display: flex; transition: transform .5s ease; }
.slide { flex: 0 0 100%; margin: 0; }
.slide img {
  display: block;
  width: 100%;
  aspect-ratio: var(--ar);
  object-fit: var(--fit, cover);
  background: #fff;
}
.slide.fit-contain img { object-fit: contain; }   /* landscape photo in a portrait frame: show it whole */
.slide figcaption {
  font-size: .85em;
  color: #555;
  text-align: center;
  padding-top: 6px;
}
.ss-prev, .ss-next {
  position: absolute;
  top: 0;
  width: 44px;
  aspect-ratio: auto;
  height: 100%;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 34px;
  text-shadow: 0 0 6px rgba(0,0,0,.45);
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s;
}
.has-captions .ss-prev, .has-captions .ss-next { height: calc(100% - 2.2em); }
.ss-prev { left: 0; }
.ss-next { right: 0; }
.slideshow:hover .ss-prev,
.slideshow:hover .ss-next,
.ss-prev:focus-visible,
.ss-next:focus-visible { opacity: 1; }
.ss-count {
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 11px;
  color: #fff;
  text-shadow: 0 0 4px rgba(0,0,0,.6);
}

/* 360 "shots" (frame sequence scrubbed with the pointer) */
.shots {
  position: relative;
  aspect-ratio: var(--ar);
  margin-bottom: 1.6em;     /* room for the hint underneath */
  cursor: ew-resize;
  touch-action: pan-y;
}
.shots img { display: block; width: 100%; height: 100%; object-fit: cover; }
.shots-hint {
  position: absolute;
  left: 0; right: 0; top: 100%;
  padding-top: 6px;
  text-align: center;
  font-size: 10px;
  color: var(--muted);
  transition: opacity .3s;
}
.shots.touched .shots-hint { opacity: 0; }

/* equal-size image grid */
.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  gap: 2cqw;
}
.grid .img > img { aspect-ratio: var(--ar); height: auto; object-fit: cover; }

/* before / after: the top image is wiped away to show the one underneath */
.reveal {
  --p: 0%;
  position: relative;
  aspect-ratio: var(--ar);
  margin-bottom: 1.6em;
  cursor: ew-resize;
  touch-action: pan-y;
}
.reveal img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.reveal .reveal-top { clip-path: inset(0 0 0 var(--p)); }
.reveal-bar {
  position: absolute;
  top: 0; bottom: 0;
  left: var(--p);
  width: 1px;
  background: #888;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
}
.reveal:hover .reveal-bar { opacity: 1; }
.reveal.touched .shots-hint { opacity: 0; }

/* click-to-zoom images */
.img.zoomable { cursor: zoom-in; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(255,255,255,.97);
  cursor: zoom-in;
  overflow: hidden;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  transition: transform .25s ease;
  will-change: transform;
}
.lightbox.zoomed { cursor: zoom-out; }
.lightbox.zoomed img { transition: none; }
.lightbox-close {
  position: absolute;
  top: 14px; right: 20px;
  border: 0; background: none;
  font-size: 34px; line-height: 1;
  color: var(--heading);
  cursor: pointer;
}
.lightbox-hint {
  position: absolute;
  bottom: 14px; left: 0; right: 0;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
}

/* video */
.video {
  display: block;
  width: 100%;
  aspect-ratio: var(--ar);
  background: #000;
}

/* data tables */
.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: .92em;
  line-height: 1.35;
}
table.data caption { padding-bottom: 6px; text-align: center; }
table.data th, table.data td {
  padding: 5px 6px;
  text-align: center;
  font-weight: 400;
  border-bottom: 1px solid var(--rule);
}
table.data tr:first-child th { border-top: 1px solid var(--rule); }
table.data td:first-child { text-align: left; }

/* ---------- footer ------------------------------------------------------ */

footer {
  padding: 60px 0 40px;
  text-align: center;
}
.back-to-top { font-size: 12px; color: var(--muted); }
.back-to-top:hover { color: var(--heading); }

/* ---------- smaller screens -------------------------------------------- */

@media (max-width: 1000px) {
  .project-covers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .site { display: block; margin: 0 16px; }

  .sidebar {
    position: sticky;
    top: 0;
    z-index: 10;
    max-height: none;
    overflow: visible;
    padding: 18px 0 14px;
    background: var(--bg);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }
  .sidebar .logo { font-size: 24px; padding: 0; }
  .sidebar .logo br { display: none; }

  .nav-toggle {
    display: block;
    width: 30px; height: 22px;
    position: relative;
    border: 0; background: none; padding: 0; cursor: pointer;
  }
  .nav-toggle span {
    position: absolute; left: 0; right: 0; height: 2px; background: var(--heading);
  }
  .nav-toggle span:nth-child(1) { top: 2px; }
  .nav-toggle span:nth-child(2) { top: 10px; }
  .nav-toggle span:nth-child(3) { top: 18px; }

  .sidebar nav { display: none; flex-basis: 100%; padding-top: 20px; }
  .sidebar.open nav { display: block; }

  main { padding-left: 0; }
  .project-covers { grid-template-columns: minmax(0, 1fr); padding-top: 10px; }
  .page-header { padding-top: 30px; }

  .content { font-size: 15px; }
  .row { display: block; }
  .row > .cell, .stack > .cell {
    width: auto;
    margin-left: 0;
    margin-top: 16px;
  }
  .row > .cell:first-child, .stack > .cell:first-child { margin-top: 0; }
  .stack > .cell + .cell, .row > .cell + .cell { margin-top: 16px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .img .rule.bridge { display: none; }
  .lightbox { padding: 12px; }
}

@media (max-width: 760px) {
  /* photography on phones: columns stack, keep the same rhythm */
  .p-photography .stack > .cell,
  .p-photography .row > .cell + .cell { margin-top: 22px; }
  .p-photography .stack > .cell:has(> .text.caption) { margin-top: 8px; }
  .p-photography .stack > .cell:first-child { margin-top: 0; }

  /* CV on phones: dates and places drop under their titles */
  .cv-row { flex-wrap: wrap; }
  .cv-row > :last-child { text-align: left; }
  .cv-entry, .cv-skill { margin-left: 0; }
  .cv-contact { margin-top: -10px; }
}