/* Arshia Hemmat — personal site */

:root {
  --paper:     #fcf9f3;
  --panel:     #ffffff;
  --ink:       #1f1a14;
  --body:      #3b352c;
  --muted:     #6c6554;
  --rule:      #e8e5e0;
  --rule-firm: #ddd9d1;
  --red:       #d02324;
  --pink:      #f6dfd9;
  --accent:    #1a4bd0;
  --mark:      #ffe89a;
  --shell:     64rem;

  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: inherit; }
html { scroll-behavior: smooth; scroll-padding-top: calc(4.5rem + env(safe-area-inset-top, 0px)); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: "Instrument Sans", system-ui, sans-serif;
  font-size: 1.12rem;
  line-height: 1.66;
  -webkit-font-smoothing: antialiased;
}

.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding: 0 1.5rem; }

a { color: inherit; text-underline-offset: 0.2em; text-decoration-thickness: 1px; text-decoration-color: var(--rule-firm); transition: text-decoration-color 0.15s ease; }
a:hover { text-decoration-color: var(--red); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

h1, h2, h3 { font-family: "Bricolage Grotesque", "Instrument Sans", sans-serif; color: var(--ink); font-weight: 700; letter-spacing: -0.025em; }

/* nav */
.site-nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(10px); }
.site-nav .shell { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 4rem; }
.brand { font-family: "Bricolage Grotesque", sans-serif; font-weight: 800; color: var(--ink);
  text-decoration: none; font-size: 0.98rem; letter-spacing: -0.04em; }
.nav-links { display: flex; gap: 1.35rem; overflow-x: auto; scrollbar-width: none; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a { font-family: "JetBrains Mono", monospace; font-size: 0.75rem; color: var(--muted);
  text-decoration: none; white-space: nowrap; transition: color 0.15s ease; }
.nav-links a:hover { color: var(--ink); }
.nav-links .slash { color: var(--red); margin-right: 0.1em; }
.cmd-slash { color: var(--red); }

/* hero */
.hero { padding: 4.5rem 0 3rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 14rem; gap: 4rem; align-items: start; }
.hero-name { font-size: clamp(2.6rem, 6.5vw, 3.6rem); line-height: 1.04; margin: 0 0 1.35rem;
  font-weight: 800; letter-spacing: -0.05em; }
.squiggle { text-decoration: underline wavy var(--red); text-decoration-thickness: 2px; text-underline-offset: 0.18em; }
.hero p { max-width: 60ch; margin: 0 0 1rem; }
.hero p strong { color: var(--ink); font-weight: 600; }
.hero-photo { position: relative; perspective: 1200px; }
.hero-photo::before {
  content: "";
  position: absolute;
  inset: 0.9rem -0.9rem -0.4rem 0.9rem;
  background: var(--pink);
  border-radius: 2px;
  transform: rotate(3.5deg);
}
.polaroid {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transform-style: preserve-3d;
  transform: rotate(-1.6deg);
  transition: transform 0.75s cubic-bezier(0.2, 0.75, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}
.polaroid.flipped { transform: rotate(-1.6deg) rotateY(180deg); }
.polaroid-face {
  display: block;
  background: var(--panel);
  padding: 0.7rem 0.7rem 0.55rem;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(31, 26, 20, 0.08), 0 8px 22px rgba(31, 26, 20, 0.07);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.polaroid-front img { width: 100%; display: block; border-radius: 1px; }
.polaroid-back {
  position: absolute;
  inset: 0;
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.polaroid-note {
  display: block;
  text-align: left;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--body);
  padding: 0.35rem 0.2rem 0;
}
.polaroid-note p { margin: 0 0 0.6rem; }
.polaroid-caption {
  display: block;
  text-align: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  color: var(--muted);
  padding-top: 0.6rem;
}
.photo-hint {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.64rem;
  color: var(--muted);
  text-align: center;
  margin: 1.1rem 0 0;
}
.photo-plate { display: grid; place-items: center; aspect-ratio: 1; font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem; color: var(--muted); text-align: center; background: var(--rule); }

.social-row { display: flex; flex-wrap: wrap; gap: 1.15rem; margin: 0 0 1.75rem; }
.social-row a { display: inline-flex; align-items: center; gap: 0.4rem; font-family: "JetBrains Mono", monospace;
  font-size: 0.76rem; color: var(--muted); text-decoration: none; transition: color 0.15s ease; }
.social-row a:hover { color: var(--ink); }
.social-row svg { width: 14px; height: 14px; fill: currentColor; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.75rem; }

/* pills */
.pill { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; line-height: 1;
  padding: 0.5rem 0.85rem; border: 1px solid var(--rule-firm); border-radius: 999px;
  background: transparent; color: var(--muted); text-decoration: none; cursor: pointer;
  display: inline-block; transition: color 0.15s ease, border-color 0.15s ease; }
.pill:hover { border-color: var(--ink); color: var(--ink); }
.pill.primary { background: var(--red); border-color: var(--red); color: #fff; }
.pill.primary:hover { opacity: 0.88; color: #fff; }
.pill[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* sections */
.section { padding: 4.5rem 0 0; }
.section-cmd { font-family: "JetBrains Mono", monospace; font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 600; color: var(--ink); margin: 0 0 2.25rem; letter-spacing: -0.02em; }
.cmd-slash { color: var(--red); }

/* marker + pen */
.mark { padding: 0 0.14em; }
.mark-conf { background: linear-gradient(transparent 62%, var(--mark) 62%); }
.pen-circle { position: relative; padding: 0 0.32em; white-space: nowrap; color: var(--ink); }
.pen-circle::after { content: ""; position: absolute; inset: -0.24em -0.12em; border: 1.4px solid var(--red);
  border-radius: 48%; transform: rotate(-2.5deg); pointer-events: none; }

/* featured */
.carousel { position: relative; }
.carousel-track {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 0;
  padding-bottom: 0.5rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track:focus-visible { outline: 2px solid var(--red); outline-offset: 6px; border-radius: 4px; }
.carousel-track > .featured-card { flex: 0 0 calc((100% - 4rem) / 3); scroll-snap-align: start; }
.carousel-track > .featured-card:nth-child(3n+1) { transform: rotate(-0.7deg); }
.carousel-track > .featured-card:nth-child(3n+2) { transform: rotate(0.5deg); }
.carousel-track > .featured-card:nth-child(3n+3) { transform: rotate(-0.35deg); }
.carousel-track > .featured-card { transition: transform 0.25s ease; }
.carousel-track > .featured-card:hover { transform: rotate(0deg); }
.carousel-track { padding: 0.75rem 0.75rem 1.25rem 0.5rem; }
.carousel-controls { display: flex; gap: 0.4rem; margin-top: 1.5rem; }
.carousel-btn {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  line-height: 1;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--rule-firm);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s ease, opacity 0.15s ease;
}
.carousel-btn:hover:not(:disabled) { border-color: var(--ink); }
.carousel-btn:disabled { opacity: 0.3; cursor: default; }
.featured-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.75rem 0.75rem 0.85rem;
  box-shadow: 7px 7px 0 var(--pink);
}
.featured-thumb { display: grid; place-items: center; aspect-ratio: 16/11; padding: 0.35rem;
  background: #fff; border: 1px solid var(--rule); border-radius: 2px; overflow: hidden; }
.featured-thumb img { max-width: 100%; max-height: 100%; width: auto; display: block;
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.3, 1); }
.featured-thumb:hover img { transform: scale(1.03); }
.featured-plate { aspect-ratio: 16/11; display: grid; place-items: center; border: 1px solid var(--rule);
  border-radius: 2px; background: var(--paper); font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem; color: var(--muted); }
.featured-meta { font-family: "JetBrains Mono", monospace; font-size: 0.74rem; color: var(--muted);
  margin-top: 0.2rem; }
.venue-plain { color: var(--muted); }
.featured-title { font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; font-size: 1rem;
  line-height: 1.3; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; }
.featured-title:hover { text-decoration: underline; text-decoration-color: var(--red); }
.actions { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: auto; padding-top: 0.55rem; }

/* lists */
.groups.scrollable { max-height: 28rem; overflow-y: auto; padding-right: 1rem; }
.groups.scrollable::-webkit-scrollbar { width: 3px; }
.groups.scrollable::-webkit-scrollbar-thumb { background: var(--rule-firm); border-radius: 3px; }
.year-group { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.year-group + .year-group { margin-top: 2.5rem; }
.year-items { border-left: 1px solid var(--rule); padding-left: 1.75rem; min-width: 0; }
.year-label {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--red);
  text-stroke: 1.4px var(--red);
  line-height: 1.1;
}
.item { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: 1.25rem; padding: 0 0 1.35rem; }
.item:last-child { padding-bottom: 0; }
.item[hidden] { display: none; }
.item-rail { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; color: var(--muted); padding-top: 0.22rem; white-space: nowrap; }
.item-lead { font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; font-size: 0.98rem;
  color: var(--ink); margin: 0 0 0.3rem; line-height: 1.34; letter-spacing: -0.02em; }
.item-lead a { text-decoration: none; }
.item-lead a:hover { text-decoration: underline; text-decoration-color: var(--red); }
.item-sub { margin: 0 0 0.3rem; font-size: 0.86rem; color: var(--muted); line-height: 1.5; }
.item-sub .self { color: var(--ink); font-weight: 600; }
.item-meta { margin: 0; font-family: "JetBrains Mono", monospace; font-size: 0.72rem; color: var(--muted); }
.item-body > p:last-of-type { margin-bottom: 0; }
.item-body > p { font-size: 0.95rem; margin: 0; }
.item-body em { font-style: normal; font-weight: 600; color: var(--ink); }
.item-body a { color: var(--accent); text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.role-tag { font-family: "JetBrains Mono", monospace; font-size: 0.7rem; color: var(--muted); }
.role-tag::before { content: "· "; }

.filters { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 2rem; }
.panel { display: none; margin-top: 0.7rem; border: 1px solid var(--rule); border-radius: 6px;
  background: var(--panel); padding: 0.9rem 1rem; }
.panel.is-visible { display: block; }
.panel pre { margin: 0; overflow-x: auto; font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem; line-height: 1.6; color: var(--body); }

/* service */
.group-row { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 1.25rem; padding: 0 0 1.4rem; }
.group-row h3 { margin: 0; font-family: "JetBrains Mono", monospace; font-size: 0.72rem;
  font-weight: 400; color: var(--muted); letter-spacing: 0; }
.group-list { list-style: none; margin: 0; padding: 0; }
.group-list li { margin-bottom: 0.5rem; font-size: 0.95rem; color: var(--ink); }
.group-list li:last-child { margin-bottom: 0; }
.group-list .org { color: var(--muted); }

.site-footer { margin-top: 5rem; padding: 2rem 0 3.5rem; }
.site-footer p { font-family: "JetBrains Mono", monospace; font-size: 0.7rem; color: var(--muted); margin: 0.15rem 0; }

@media (max-width: 860px) {
  .hero { padding: 2.5rem 0 2rem; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .hero-photo { max-width: 11rem; order: -1; margin-bottom: 0.5rem; }
  .carousel-track { gap: 1.25rem; }
  .carousel-track > .featured-card { flex: 0 0 82%; }
  .section { padding-top: 3.25rem; }
  .item { grid-template-columns: minmax(0, 1fr); gap: 0.25rem; }
  .group-row { grid-template-columns: minmax(0, 1fr); gap: 0.35rem; }
  .groups.scrollable { max-height: none; overflow: visible; padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }

/* per-paper pages */
.paper-page { padding-top: 3rem; }
.paper-kicker { font-family: "JetBrains Mono", monospace; font-size: 0.74rem; color: var(--muted); margin: 0 0 0.75rem; }
.paper-title { font-size: clamp(1.6rem, 4vw, 2.3rem); line-height: 1.15; margin: 0 0 0.6rem; letter-spacing: -0.035em; max-width: 24ch; }
.paper-figure { margin: 2.5rem 0 2.25rem; background: #fff; border: 1px solid var(--rule); border-radius: 4px; padding: 1rem; box-shadow: 8px 8px 0 var(--pink); transform: rotate(-0.3deg); }
.paper-figure img { width: 100%; display: block; }
.paper-body { max-width: 62ch; }
.paper-body p { margin: 0 0 1rem; }
.paper-summary { font-size: 1.12rem; line-height: 1.6; color: var(--ink); }
.paper-todo { font-family: "JetBrains Mono", monospace; font-size: 0.76rem; color: var(--muted);
  border-left: 2px solid var(--red); padding-left: 0.9rem; }

/* long-form posts */
.post-title { max-width: 20ch; }
.post-body { max-width: 66ch; font-size: 1.06rem; line-height: 1.72; }
.post-body h2 { font-size: 1.4rem; margin: 2.75rem 0 0.9rem; letter-spacing: -0.03em; }
.post-body h3 { font-size: 1.05rem; margin: 2rem 0 0.7rem; letter-spacing: -0.02em; }
.post-body p { margin: 0 0 1.05rem; }
.post-body ul { margin: 0 0 1.2rem; padding-left: 1.1rem; }
.post-body li { margin-bottom: 0.5rem; }
.post-body strong { color: var(--ink); }
.post-body blockquote { margin: 1.6rem 0; padding: 0 0 0 1.1rem; border-left: 2px solid var(--red);
  font-size: 1.12rem; line-height: 1.6; color: var(--ink); }
.post-body hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }
.post-lede { font-size: 1.2rem; line-height: 1.55; color: var(--ink); margin-bottom: 1.6rem; }
.post-outro { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; color: var(--muted); }
.item-rail br + * { display: block; }

/* home: the short scroll */


/* papers page rows */
.paper-row { display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: 1.6rem; padding: 1.4rem 0; align-items: start; }
.paper-row + .paper-row { border-top: 1px solid var(--rule); }
.paper-row[hidden] { display: none; }
.row-thumb { border: 1px solid var(--rule); border-radius: 4px; background: #fff; padding: 0.4rem; transform: rotate(-0.6deg); box-shadow: 4px 4px 0 var(--pink);
  display: grid; place-items: center; aspect-ratio: 4/3; overflow: hidden; }
.row-thumb img { max-width: 100%; max-height: 100%; display: block; }
.row-thumb-empty { font-family: "JetBrains Mono", monospace; font-size: 0.7rem; color: var(--muted);
  text-align: center; background: var(--paper); border-style: dashed; }
.row-meta { margin: 0 0 0.35rem; font-family: "JetBrains Mono", monospace; font-size: 0.72rem; color: var(--muted); }
.row-title { font-size: 1.02rem; line-height: 1.32; margin: 0 0 0.35rem; letter-spacing: -0.02em; }
.row-title a { text-decoration: none; }
.row-title a:hover { text-decoration: underline; text-decoration-color: var(--red); }
.row-authors { margin: 0 0 0.4rem; font-size: 0.86rem; color: var(--muted); }
.row-authors .self { color: var(--ink); font-weight: 600; }
.row-sum { margin: 0 0 0.6rem; font-size: 0.93rem; }

@media (max-width: 860px) {
  .paper-row { grid-template-columns: minmax(0, 1fr); gap: 0.85rem; }
  .row-thumb { max-width: 12rem; }
}

/* year rail on narrow screens */
@media (max-width: 860px) {
  .year-group { grid-template-columns: minmax(0, 1fr); gap: 0.75rem; }
  .year-items { border-left: 0; padding-left: 0; }
  .item { grid-template-columns: 3.5rem minmax(0, 1fr); gap: 0.9rem; }
}