/* ==========================================================================
   Kasra Sinaei — personal site
   Palette carries meaning: flux (blue) = safe / system,
   barrier (amber) = constraint / boundary. Same language as the research.
   ========================================================================== */

:root {
  --void:    #0A0E1A;
  --void-2:  #121A2B;
  --void-3:  #1E2942;
  --paper:   #F6F7F9;
  --surface: #FFFFFF;
  --ink:     #101520;
  --ink-2:   #2A3242;
  --muted:   #5A6472;
  --muted-2: #8A93A2;

  --flux:    #3D8BFD;
  --flux-dk: #1F63D6;
  --barrier: #E8A33D;

  --line:      rgba(16, 21, 32, 0.13);
  --line-soft: rgba(16, 21, 32, 0.06);
  --line-dark: rgba(255, 255, 255, 0.10);

  --rail: 300px;

  /* Section grounds — one cool family, gently modulated, so consecutive
     sections always read as different without any of them shouting. The
     deeper steps are given to the sections that carry white cards, so the
     cards keep their edge. */
  --sec-about:      #F1F5FA;
  --sec-research:   #FCFDFE;
  --sec-experience: #F5F8FC;
  --sec-projects:   #EDF2F8;
  --sec-education:  #F6F9FD;
  --sec-contact:    #EEF3F9;

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono:    "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- reset ---------- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: var(--flux-dk); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0;
}

::selection { background: var(--flux); color: #fff; }

:focus-visible {
  outline: 2px solid var(--flux);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--flux);
  color: #fff;
  padding: 12px 20px;
  font-family: var(--mono);
  font-size: 0.8rem;
}
.skip-link:focus { left: 0; }

/* ---------- shared bits ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--barrier);
  border-radius: 50%;
  flex: none;
}
.eyebrow--dark { color: var(--muted-2); }

.section {
  padding: clamp(72px, 9vw, 128px) clamp(24px, 5vw, 72px);
  background: var(--sec, var(--paper));
}

#about      { --sec: var(--sec-about); }
#research   { --sec: var(--sec-research); }
#experience { --sec: var(--sec-experience); }
#projects   { --sec: var(--sec-projects); }
#education  { --sec: var(--sec-education); }
#astro      { --sec: var(--void); }
#contact    { --sec: var(--sec-contact); }
.section__inner { max-width: 1080px; margin: 0 auto; }
.section__head { max-width: 720px; margin-bottom: clamp(38px, 5vw, 60px); }
.section__title {
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 800;
}
.section__lede {
  margin: 18px 0 0;
  font-size: 1.08rem;
  color: var(--ink-2);
}

/* Status chips are inert; link chips are clickable. They must not look alike. */
.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 3px;
  background: rgba(90, 100, 114, 0.11);
  color: var(--muted);
  white-space: nowrap;
}
.tag--review {
  background: rgba(232, 163, 61, 0.16);
  color: #8A5D10;
}

a.tag {
  background: rgba(61, 139, 253, 0.10);
  color: var(--flux-dk);
  border: 1px solid rgba(61, 139, 253, 0.22);
  padding: 3px 9px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
a.tag:hover {
  text-decoration: none;
  background: rgba(61, 139, 253, 0.18);
  border-color: rgba(61, 139, 253, 0.55);
}
a.tag i { font-size: 0.72em; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.94rem;
  letter-spacing: -0.01em;
  padding: 13px 22px;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
              border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--flux); color: #fff; }
.btn--primary:hover { background: var(--flux-dk); }
.btn--ghost {
  background: transparent;
  color: #E8ECF4;
  border-color: rgba(255, 255, 255, 0.28);
}
.btn--ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.07); }

/* ==========================================================================
   Left rail
   ========================================================================== */

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail);
  background: var(--void);
  color: #E8ECF4;
  display: flex;
  flex-direction: column;
  padding: 40px 30px 26px;
  z-index: 60;
  overflow-y: auto;
  border-right: 1px solid rgba(255, 255, 255, 0.07);
}

.rail__id { text-align: center; }

.rail__photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 18px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16), 0 0 0 6px rgba(61, 139, 253, 0.14);
}

.rail__name {
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}
.rail__name a { color: inherit; }
.rail__name a:hover { text-decoration: none; color: var(--flux); }

.rail__role {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin: 9px 0 0;
  line-height: 1.75;
}

.rail__nav { margin: 34px 0; flex: 1; }
.rail__nav ul { list-style: none; margin: 0; padding: 0; }
.rail__nav li { margin: 1px 0; }

.rail__nav a {
  display: block;
  font-family: var(--display);
  font-size: 0.94rem;
  font-weight: 500;
  color: #A8B2C4;
  padding: 8px 12px 8px 15px;
  border-left: 2px solid transparent;
  border-radius: 0 3px 3px 0;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
              background 0.2s var(--ease);
}
.rail__nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}
.rail__nav a.is-active {
  color: #fff;
  border-left-color: var(--barrier);
  background: rgba(255, 255, 255, 0.05);
}

.rail__cv {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.88rem;
  color: #fff;
  background: var(--flux);
  padding: 12px;
  border-radius: 4px;
  transition: background 0.25s var(--ease);
}
.rail__cv:hover { background: var(--flux-dk); text-decoration: none; }

.rail__social {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 20px 0 14px;
  padding: 0;
}
.rail__social a {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--muted-2);
  font-size: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.10);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
              transform 0.2s var(--ease);
}
.rail__social a:hover {
  color: #fff;
  border-color: var(--flux);
  transform: translateY(-2px);
  text-decoration: none;
}

.rail__legal {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: #4A5468;
  text-align: center;
  line-height: 1.7;
  margin: 0;
}

/* mobile top bar */

.topbar {
  display: none;
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 70;
  background: var(--void);
  color: #fff;
  padding: 12px 18px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.topbar__name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
}
.topbar__toggle {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
}
.topbar__toggle span {
  display: block;
  width: 21px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.topbar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topbar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.topbar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.scrim {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.55);
  z-index: 55;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.scrim.is-open { display: block; opacity: 1; }

/* ==========================================================================
   Main
   ========================================================================== */

.main { margin-left: var(--rail); }

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--void);
  color: #fff;
  overflow: hidden;
  padding: 110px clamp(24px, 5vw, 72px);
}

.hero__photo {
  position: absolute;
  inset: 0;
  background: url("../images/hero-lab.jpg") center right / cover no-repeat;
  opacity: 0.62;
}
.hero__photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--void) 4%, rgba(10, 14, 26, 0.90) 30%, rgba(10, 14, 26, 0.42) 62%, rgba(10, 14, 26, 0.28) 100%),
    linear-gradient(180deg, rgba(10, 14, 26, 0.55) 0%, transparent 22%, transparent 72%, rgba(10, 14, 26, 0.75) 100%);
}

/* the signature: a CBF safety filter, running */
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
}
.hero__text { max-width: 660px; }

.hero__title {
  font-size: clamp(2.5rem, 5.6vw, 4.3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.02;
  color: #fff;
  margin: 0 0 22px;
}
.hero__title em {
  font-style: normal;
  color: var(--barrier);
}

.hero__lede {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.68;
  color: #C4CDDC;
  margin: 0 0 32px;
  max-width: 560px;
}
.hero__lede strong { color: #fff; font-weight: 600; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 44px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  list-style: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--muted-2);
  text-transform: uppercase;
}
.hero__meta b { color: #fff; font-weight: 500; }

.hero__legend {
  position: absolute;
  right: clamp(24px, 5vw, 72px);
  bottom: 26px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  color: #6E7A90;
  text-align: right;
  line-height: 1.9;
  margin: 0;
}
.hero__legend i {
  display: inline-block;
  width: 16px;
  height: 2px;
  vertical-align: middle;
  margin-right: 7px;
}
.hero__legend .k-flux { background: var(--flux); }
.hero__legend .k-barrier { background: var(--barrier); }

/* ---------- about ---------- */

.about__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(36px, 5vw, 64px);
  align-items: start;
}
.about__prose p { margin: 0 0 18px; }
.about__prose p:last-child { margin-bottom: 0; }
.about__prose strong { font-weight: 600; }

.slides { position: relative; }

.slides__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 8px;
  overflow: hidden;
  background: var(--void-2);
  border: 1px solid var(--line);
}

.slides__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.1s var(--ease);
  will-change: opacity, transform;
}
.slides__img.is-on { opacity: 1; }

/* slow drift while a slide is showing — the motion the page is built on */
.slides:not(.is-static) .slides__img.is-on { animation: kenburns 9s ease-out both; }
@keyframes kenburns {
  from { transform: scale(1.005); }
  to   { transform: scale(1.065); }
}

.slides__dots {
  display: flex;
  justify-content: center;
  gap: 7px;
  margin-top: 14px;
}
.slides__dot {
  width: 26px;
  height: 4px;
  padding: 0;
  border: 0;
  border-radius: 2px;
  background: rgba(16, 21, 32, 0.16);
  cursor: pointer;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.slides__dot:hover { background: rgba(16, 21, 32, 0.32); }
.slides__dot.is-on { background: var(--barrier); transform: scaleY(1.5); }

.focus {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(228px, 1fr));
  gap: 14px;
  margin-top: clamp(38px, 5vw, 56px);
}
.focus__item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px 20px;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
              border-color 0.28s var(--ease);
}
.focus__item:hover {
  transform: translateY(-3px);
  border-color: rgba(61, 139, 253, 0.42);
  box-shadow: 0 12px 26px rgba(16, 21, 32, 0.07);
}
.focus__item i { color: var(--flux); font-size: 1.15rem; }
.focus__item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 13px 0 5px;
}
.focus__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- publications ---------- */

.pubs { display: grid; gap: 0; }

.pub {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 26px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.pub:last-child { border-bottom: 1px solid var(--line); }

.pub__year {
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--muted);
  padding-top: 3px;
  letter-spacing: 0.02em;
}

.pub__title {
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.015em;
  margin: 0 0 7px;
  color: var(--ink);
}

.pub__venue {
  margin: 0;
  font-size: 0.94rem;
  font-style: italic;
  color: var(--muted);
}

.pub__tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 11px; }

/* ---------- timeline (experience) ---------- */

.timeline { position: relative; padding-left: 96px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 38px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.tl { position: relative; padding: 0 0 34px; }
.tl:last-child { padding-bottom: 0; }

/* the organisation's mark stands where the timeline dot used to */
.tl__logo {
  position: absolute;
  left: -58px;
  transform: translateX(-50%);
  top: -1px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: 0 2px 6px rgba(16, 21, 32, 0.05);
  overflow: hidden;
  transition: border-color 0.28s var(--ease), box-shadow 0.28s var(--ease),
              transform 0.28s var(--ease);
}
.tl__logo img { width: 27px; height: 27px; object-fit: contain; }
.tl:hover .tl__logo {
  transform: translateX(-50%) translateY(-2px);
  border-color: rgba(61, 139, 253, 0.45);
  box-shadow: 0 8px 18px rgba(16, 21, 32, 0.10);
}

/* a wordmark needs the room; it stays centred on the same line */
.tl__logo--wide { width: 76px; }
.tl__logo--wide img { width: 62px; height: auto; }

/* a mark that is wider than it is tall, but not a full wordmark */
.tl__logo--mark img { width: 34px; height: auto; }

/* no public mark for this one — set the initials instead */
.tl__logo--text {
  font-family: var(--display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--muted);
}

.tl--now .tl__logo {
  border-color: rgba(232, 163, 61, 0.75);
  box-shadow: 0 0 0 3px rgba(232, 163, 61, 0.14), 0 2px 6px rgba(16, 21, 32, 0.05);
}

.tl__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 8px;
}
.tl__role {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.tl__org { color: var(--flux-dk); }
.tl__when {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}
.tl__body { margin: 0; color: var(--ink-2); font-size: 0.98rem; }

/* ---------- projects ---------- */

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
              border-color 0.3s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(61, 139, 253, 0.40);
  box-shadow: 0 18px 34px rgba(16, 21, 32, 0.10);
}

.card__media {
  aspect-ratio: 16 / 9;
  background: #E4E8EE center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }

.card__title {
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin: 0 0 9px;
}

.card__text {
  margin: 0 0 16px;
  font-size: 0.93rem;
  line-height: 1.62;
  color: var(--muted);
  flex: 1;
}

.card__links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.card__links a {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--flux-dk);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ---------- education ---------- */

.edu { display: grid; gap: 14px; }
.edu__item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--flux);
  border-radius: 6px;
  padding: 20px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px 20px;
  align-items: center;
}

.edu__logo {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--surface);
  flex: none;
}
.edu__logo img { width: 30px; height: 30px; object-fit: contain; }
.edu__logo--text {
  font-family: var(--display);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--muted);
}
.edu__item--now { border-left-color: var(--barrier); }
.edu__degree { font-size: 1.06rem; font-weight: 700; letter-spacing: -0.02em; }
.edu__school { margin: 5px 0 0; color: var(--muted); font-size: 0.95rem; }
.edu__meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--muted);
  text-align: right;
  text-transform: uppercase;
  line-height: 1.9;
}

/* ---------- astrophotography (dark) ---------- */

.astro {
  color: #E8ECF4;
}
.astro .section__title { color: #fff; }
.astro .section__lede { color: #A8B2C4; }
.astro a { color: var(--flux); }

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: clamp(150px, 14.5vw, 232px);
  gap: 12px;
}
.shot {
  position: relative;
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--void-2);
  border: 1px solid rgba(255, 255, 255, 0.07);
  cursor: zoom-in;
}
/* spans, not aspect ratios — so every tile lands on the same row grid */
.shot--w2 { grid-column: span 2; }
.shot--h2 { grid-row: span 2; }

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), opacity 0.4s var(--ease);
}
.shot:hover img { transform: scale(1.05); }

/* lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(6, 9, 16, 0.95);
  display: none;
  place-items: center;
  padding: 40px;
}
.lightbox.is-open { display: grid; }
.lightbox img {
  max-width: 100%;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 4px;
}
.lightbox__close {
  position: absolute;
  top: 22px;
  right: 26px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.2s var(--ease);
}
.lightbox__close:hover { background: rgba(255, 255, 255, 0.10); }

/* ---------- contact ---------- */

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-bottom: 34px;
}
.contact__card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px;
}
.contact__card i { color: var(--flux); font-size: 1.1rem; }
.contact__card h3 {
  font-size: 0.72rem;
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 14px 0 7px;
  letter-spacing: 0.12em;
}
.contact__card p { margin: 0; font-size: 0.97rem; line-height: 1.65; }

.colophon {
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: space-between;
}

/* ---------- scroll reveal ----------
   Scoped to .js so the page is fully readable when scripting is off or
   broken — otherwise a single JS error hides every section below the hero. */

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================================
   Figures band — a fixed-attachment plate of Old Main behind the numbers,
   the parallax device the previous site used, dialled well down.
   ========================================================================== */

.band {
  position: relative;
  overflow: hidden;
  background: var(--void);
  color: #fff;
  padding: clamp(54px, 7vw, 92px) clamp(24px, 5vw, 72px);
}

.band__bg {
  position: absolute;
  inset: 0;
  background: url("../images/oldmain-bg.jpg") center center / cover no-repeat fixed;
  opacity: 0.34;
}

/* a contrast floor, so a label never lands on the bright part of the sky */
.band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 26, 0.30);
  pointer-events: none;
}

.band__inner { position: relative; z-index: 1; max-width: 1080px; margin: 0 auto; }

.figures {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px 24px;
  margin: 0;
}
.figure { text-align: center; }

.figure__n {
  font-family: var(--display);
  font-size: clamp(2.5rem, 5.2vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 10px;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.figure__l {
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: #A8B2C4;
  line-height: 1.7;
  max-width: 190px;
  margin: 0 auto;
}
/* the label may carry a link; it should read as a label first */
.figure__l a { color: inherit; }
.figure__l a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 900px) {
  /* fixed attachment misbehaves on touch browsers */
  .band__bg { background-attachment: scroll; }
  .figures { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1180px) {
  .gallery { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1000px) {
  .rail {
    transform: translateX(-100%);
    transition: transform 0.35s var(--ease);
    width: 290px;
    padding-top: 84px;
  }
  .rail.is-open { transform: none; }
  .topbar { display: flex; }
  .main { margin-left: 0; padding-top: 62px; }
  .hero { min-height: 88vh; padding-top: 60px; }
  .hero__photo { inset: 0; opacity: 0.34; }
  .hero__photo::after {
    background: linear-gradient(180deg, rgba(10, 14, 26, 0.86) 0%, rgba(10, 14, 26, 0.70) 60%, var(--void) 100%);
  }
  .about__grid { grid-template-columns: 1fr; }
  .hero__legend { display: none; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .timeline { padding-left: 74px; }
  .timeline::before { left: 28px; }
  .tl__logo { left: -46px; width: 37px; height: 37px; border-radius: 8px; }
  .tl__logo img { width: 23px; height: 23px; }
  .tl__logo--wide { width: 62px; }
  .tl__logo--wide img { width: 50px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .shot--h2 { grid-row: span 1; }
  .pub { grid-template-columns: 1fr; gap: 6px; }
  .pub__year { padding-top: 0; }
  .edu__item { grid-template-columns: auto 1fr; }
  .edu__meta { text-align: left; grid-column: 2; }
  .projects { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1 1 auto; justify-content: center; }
}

@media (max-width: 460px) {
  .gallery { grid-template-columns: 1fr; }
  .shot--w2 { grid-column: span 1; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .slides__img.is-on { animation: none !important; transform: none !important; }
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .shot:hover img { transform: none; }
}

/* ---------- print ---------- */

@media print {
  .rail, .topbar, .hero__canvas, .hero__photo, .lightbox, .scrim { display: none !important; }
  .main { margin: 0; }
  body { background: #fff; font-size: 11pt; }
  .hero { min-height: auto; background: #fff; color: #000; padding: 0 0 24pt; }
  .hero__title, .hero__lede { color: #000; }
  .section { padding: 18pt 0; break-inside: avoid; }
}