/* =========================================================
   Iris Rabines — portfolio
   Edit colors, spacing, and type here. Content lives in index.html.
   ========================================================= */

:root {
  --paper:      #ffffff;
  --paper-alt:  #f6f6f7;
  --ink:        #1c1a1d;
  --ink-soft:   #4a454b;
  --ink-faint:  #6f6a70;
  --rule:       #e5e5e7;
  --accent:     #7a2f5f;   /* aubergine — the one brand color */
  --accent-ink: #5c2247;
  --max:        1080px;
  --pad:        clamp(20px, 5vw, 64px);
  --font-serif: "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-sans:  "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:     #16161a;
    --paper-alt: #1e1e23;
    --ink:       #f2eef2;
    --ink-soft:  #c7c0cb;
    --ink-faint: #948c99;
    --rule:      #33333b;
    --accent:    #e59fc9;
    --accent-ink:#f0c4de;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }

.sr-only, .skip-link {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link:focus {
  position: fixed; top: 12px; left: 12px; width: auto; height: auto;
  clip: auto; background: var(--accent); color: #fff; padding: 10px 16px;
  border-radius: 6px; z-index: 100;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand {
  font-family: var(--font-serif); font-weight: 700; font-size: 1.1rem;
  color: var(--ink); text-decoration: none; letter-spacing: .01em;
}
.site-nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  color: var(--ink-soft); text-decoration: none; font-size: .92rem; font-weight: 500;
  padding: 6px 0; border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a.is-active { color: var(--ink); border-bottom-color: var(--accent); }

.nav-toggle { display: none; }

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; background: transparent; border: 1px solid var(--rule);
    border-radius: 8px; cursor: pointer;
  }
  .nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
    content: ""; display: block; width: 18px; height: 2px; background: var(--ink); position: relative;
  }
  .nav-toggle-bar::before { position: absolute; top: -6px; }
  .nav-toggle-bar::after  { position: absolute; top: 6px; }
  .site-nav {
    position: absolute; top: 62px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .site-nav.open { max-height: 60vh; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 8px var(--pad) 16px; }
  .site-nav li { border-bottom: 1px solid var(--rule); }
  .site-nav a { display: block; padding: 14px 0; font-size: 1rem; }
}

/* ---------- Shared section furniture ---------- */
.overline {
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 14px;
}
h1 {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 4.2rem); line-height: 1.04;
  letter-spacing: -0.02em; margin: 0;
}
h2 {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.12;
  letter-spacing: -0.015em; margin: 0 0 18px;
}
h3 {
  font-family: var(--font-serif); font-weight: 700;
  font-size: clamp(1.2rem, 2.4vw, 1.5rem); line-height: 1.22; margin: 0;
}
.section { padding-block: clamp(56px, 9vw, 104px); border-top: 1px solid var(--rule); }
.section.alt { background: var(--paper-alt); }
.section-lead { font-size: 1.12rem; color: var(--ink-soft); max-width: 62ch; margin: 0 0 40px; }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(60px, 12vw, 130px) clamp(40px, 7vw, 72px); }
.hero-top {
  display: grid; grid-template-columns: 1fr minmax(280px, 360px);
  gap: clamp(28px, 5vw, 64px); align-items: start; margin-bottom: 52px;
}
.hero-text { min-width: 0; }
.hero-text .hero-actions { margin-bottom: 0; }
.hero-media { margin: 0; }
.hero-media img {
  width: 100%; height: auto; display: block; border-radius: 14px;
  border: 1px solid var(--rule); aspect-ratio: 3 / 4; object-fit: cover;
}
@media (max-width: 720px) {
  .hero-top { grid-template-columns: 1fr; }
  .hero-media { max-width: 320px; }
}
.hero-role {
  font-family: var(--font-serif); font-size: clamp(1.2rem, 3vw, 1.7rem);
  color: var(--ink-soft); margin: 18px 0 0; font-weight: 400;
}
.hero-lead { font-size: 1.2rem; max-width: 54ch; margin: 22px 0 32px; color: var(--ink-soft); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 52px; }

.btn {
  display: inline-block; background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 500; font-size: .95rem; padding: 12px 22px; border-radius: 8px;
  border: 1px solid var(--accent); transition: transform .12s ease, background .12s ease;
}
.btn:hover { background: var(--accent-ink); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn-ghost:hover { background: transparent; color: var(--ink); border-color: var(--accent); }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  margin: 0; padding-top: 34px; border-top: 1px solid var(--rule);
}
.stats div { margin: 0; }
.stats dt { font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 6px; }
.stats dd { margin: 0; font-family: var(--font-serif); font-size: clamp(1.3rem, 3vw, 1.9rem); font-weight: 700; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); gap: 20px 24px; } }

/* ---------- Intro ---------- */
.intro { padding-block: clamp(30px, 6vw, 60px) clamp(40px, 8vw, 80px); }
.intro p { font-size: 1.22rem; line-height: 1.7; max-width: 68ch; margin: 0; }

/* ---------- Case studies ---------- */
.case {
  border: 1px solid var(--rule); border-radius: 14px;
  padding: clamp(24px, 4vw, 40px); margin-top: 32px; background: var(--paper);
}
.section.alt .case { background: var(--paper); }
.case-head { margin-bottom: 22px; }
.case-meta { color: var(--ink-faint); font-size: .92rem; margin: 8px 0 0; }
.case-grid { display: grid; gap: 0; }
.case-row {
  display: grid; grid-template-columns: 190px 1fr; gap: 8px 28px;
  padding: 18px 0; border-top: 1px solid var(--rule);
}
.case-row:first-child { border-top: 0; padding-top: 0; }
.case-row p { margin: 0; }
.case-label {
  font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-faint); padding-top: 3px;
}
@media (max-width: 680px) {
  .case-row { grid-template-columns: 1fr; gap: 6px; }
}

.proto-list { margin: 0; padding-left: 1.1em; }
.proto-list li { margin-bottom: 10px; }
.proto-list li:last-child { margin-bottom: 0; }

.pull {
  margin: 28px 0 0; padding: 22px 26px; border-left: 3px solid var(--accent);
  background: var(--paper-alt); border-radius: 0 10px 10px 0;
  font-family: var(--font-serif); font-size: 1.15rem; line-height: 1.5; color: var(--ink);
}
.pull cite { display: block; margin-top: 12px; font-family: var(--font-sans); font-size: .85rem; font-style: normal; color: var(--ink-faint); }

.awards { margin-top: 36px; }
.awards ul, .creds ul, .about-skills ul { list-style: none; margin: 10px 0 0; padding: 0; }
.awards li { padding: 10px 0; border-top: 1px solid var(--rule); }

.footnote { margin-top: 30px; font-size: .96rem; color: var(--ink-soft); }

/* ---------- Methods table ---------- */
.methods { overflow-x: auto; margin: 8px 0 12px; border: 1px solid var(--rule); border-radius: 12px; }
.methods table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .95rem; }
.methods th, .methods td { text-align: left; padding: 14px 18px; vertical-align: top; border-top: 1px solid var(--rule); }
.methods thead th {
  border-top: 0; font-size: .74rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 600; background: var(--paper-alt);
}
.methods tbody th { font-weight: 600; color: var(--ink); width: 28%; }
.methods td em { color: var(--ink-soft); font-style: italic; }

/* ---------- Photos & figures ---------- */
.figure { margin: 34px 0 8px; }
.figure img {
  width: 100%; height: auto; display: block; border-radius: 12px;
  border: 1px solid var(--rule);
}
.figure figcaption { margin-top: 10px; font-size: .88rem; color: var(--ink-faint); }
.photo-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 34px 0 8px;
}
.photo-grid .figure { margin: 0; }
.photo-grid .figure img { aspect-ratio: 16 / 10; object-fit: cover; }
@media (max-width: 640px) { .photo-grid { grid-template-columns: 1fr; } }

/* ---------- Redrawn artifacts ---------- */
.artifact { margin: 34px 0 8px; }
.artifact figcaption { margin-top: 12px; font-size: .88rem; color: var(--ink-faint); text-align: center; }

.arc { display: flex; flex-wrap: wrap; gap: 10px; align-items: stretch; }
.arc span {
  flex: 1 1 auto; text-align: center; padding: 16px 12px;
  border: 1px solid var(--rule); border-radius: 10px; background: var(--paper);
  font-family: var(--font-serif); font-weight: 700; position: relative;
}
.arc span:not(:last-child)::after {
  content: "→"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%);
  color: var(--accent); font-family: var(--font-sans); z-index: 1;
}
@media (max-width: 640px) { .arc span:not(:last-child)::after { content: ""; } }

.moscow {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.moscow .q {
  border: 1px solid var(--rule); border-radius: 10px; padding: 20px; background: var(--paper);
  min-height: 92px;
}
.moscow .q:first-child { border-color: var(--accent); }
.q-label { display: block; font-family: var(--font-serif); font-weight: 700; font-size: 1.05rem; }
.q-sub { display: block; font-size: .82rem; color: var(--ink-faint); margin-top: 4px; }

/* ---------- Speaking ---------- */
.series { margin: 8px 0 40px; }
.series h3 { margin-bottom: 6px; }
.series-note { color: var(--ink-soft); margin: 0 0 22px; }
.series-list { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.series-list li {
  display: grid; grid-template-columns: 90px 1fr; gap: 22px;
  padding: 22px 0; border-top: 1px solid var(--rule);
}
.series-num { font-family: var(--font-serif); font-weight: 700; color: var(--accent); }
.series-title { font-family: var(--font-serif); font-size: 1.15rem; font-weight: 700; margin: 0; }
.series-date { color: var(--ink-faint); font-size: .88rem; margin: 2px 0 8px; }
.series-list p:last-child { margin: 0; color: var(--ink-soft); }
@media (max-width: 680px) { .series-list li { grid-template-columns: 1fr; gap: 6px; } }

.talks { display: grid; gap: 18px; margin-bottom: 42px; }
.talk { border: 1px solid var(--rule); border-radius: 12px; padding: 22px 24px; background: var(--paper); }
.talk-title { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 700; margin: 0; }
.talk-meta { color: var(--ink-faint); font-size: .88rem; margin: 4px 0 10px; }
.talk p:last-child { margin: 0; color: var(--ink-soft); }

.creds { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.creds li { padding: 8px 0; border-top: 1px solid var(--rule); }
@media (max-width: 620px) { .creds { grid-template-columns: 1fr; gap: 20px; } }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(28px, 5vw, 60px); }
.about-bio p { margin: 0 0 16px; }
.about-bio .case-label { margin-top: 28px; }
.timeline { list-style: none; margin: 10px 0 0; padding: 0; }
.timeline li { padding: 12px 0; border-top: 1px solid var(--rule); }
.timeline span { display: block; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 3px; }
.about-resume { margin-top: 28px !important; }
.about-skills { border-left: 1px solid var(--rule); padding-left: clamp(20px, 4vw, 44px); }
.about-skills li { padding: 7px 0; border-top: 1px solid var(--rule); font-size: .95rem; }
.about-skills .case-label:first-child { margin-top: 0; }
.about-skills .case-label { margin-top: 26px; display: block; }
@media (max-width: 820px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-skills { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 24px; }
}

/* ---------- Contact ---------- */
.contact-list { list-style: none; margin: 0; padding: 0; max-width: 520px; }
.contact-list li {
  display: grid; grid-template-columns: 110px 1fr; gap: 16px;
  padding: 16px 0; border-top: 1px solid var(--rule); align-items: baseline;
}
.contact-list li:last-child { border-bottom: 1px solid var(--rule); }
.contact-list span { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--rule); background: var(--paper-alt); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; padding-block: 28px; font-size: .9rem; color: var(--ink-faint); }
.footer-inner a { color: var(--ink-soft); text-decoration: none; }
.footer-inner a:hover { color: var(--ink); }
.footer-inner p { margin: 0; }