/* ============================================================
   London Political Economy & Political Science
   Early Career Workshop — stylesheet
   ============================================================ */

:root {
  --ink: #16233D;        /* primary text, header/hero bg */
  --ink-soft: #2A3B57;
  --paper: #F1F0EA;      /* page background */
  --paper-raised: #FFFFFF;
  --stamp: #4B6B57;      /* ledger-stamp green accent */
  --stamp-deep: #354D3F;
  --slate: #5B6472;      /* secondary text */
  --rule: #C9C2B3;       /* hairline rule */
  --rule-dark: rgba(241,240,234,0.28);

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --max-w: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stamp);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--stamp);
  display: inline-block;
}
.eyebrow.on-ink { color: #9FC2AC; }
.eyebrow.on-ink::before { background: #9FC2AC; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(241,240,234,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.brand span { color: var(--stamp); }

.site-nav { display: flex; gap: 28px; }
.site-nav a {
  text-decoration: none;
  font-size: 14.5px;
  color: var(--ink-soft);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.site-nav a:hover { color: var(--stamp-deep); }

.nav-toggle { display: none; }

@media (max-width: 760px) {
  .site-nav { display: none; }
}

/* ---------- hero ---------- */
.hero {
  background: var(--ink);
  color: var(--paper);
  padding: 96px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  /* faint ledger rule lines in the background, right side */
  content: "";
  position: absolute;
  top: 0; bottom: 0; right: -80px;
  width: 340px;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(241,240,234,0.06) 0px,
    rgba(241,240,234,0.06) 1px,
    transparent 1px,
    transparent 34px
  );
  pointer-events: none;
}
.hero .wrap { position: relative; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-carousel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rule-dark);
  border-radius: 4px;
  background: rgba(241,240,234,0.03);
}
.hero-carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}
.hero-carousel-track img {
  width: 100%;
  flex: 0 0 100%;
  height: auto;
  display: block;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(22,35,61,0.7);
  color: var(--paper);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}
.carousel-btn.prev { left: 10px; }
.carousel-btn.next { right: 10px; }
.carousel-btn:hover { background: rgba(22,35,61,0.9); }
.carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}
.carousel-dots .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(241,240,234,0.5);
  cursor: pointer;
}
.carousel-dots .dot.active { background: var(--stamp); }
@media (max-width: 900px) {
  .hero-carousel { order: -1; }
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 5.6vw, 58px);
  line-height: 1.08;
  margin: 0 0 20px;
  max-width: 15ch;
}
.hero h1 em {
  font-style: italic;
  color: #9FC2AC;
}

.hero .lede {
  font-size: 18px;
  color: #C9D2C7;
  max-width: 56ch;
  margin: 0 0 40px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: #A9BCB0;
  margin-bottom: 44px;
  border-top: 1px solid var(--rule-dark);
  border-bottom: 1px solid var(--rule-dark);
  padding: 18px 0;
}
.hero-meta div span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 10.5px;
  color: #6E8478;
  margin-bottom: 4px;
}
.hero-meta div strong {
  color: var(--paper);
  font-weight: 500;
}

.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 3px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn-primary {
  background: var(--stamp);
  color: #F1F0EA;
}
.btn-primary:hover { background: #5C7F68; transform: translateY(-1px); }
.btn-ghost {
  border-color: var(--rule-dark);
  color: var(--paper);
}
.btn-ghost:hover { background: rgba(241,240,234,0.08); }

/* ---------- section shell ---------- */
section { padding: 88px 0; }
.section-tight { padding: 72px 0; }

h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 36px);
  margin: 0 0 22px;
  color: var(--ink);
}

.section-on-ink h2 { color: var(--paper); }

p.body-text {
  color: var(--slate);
  font-size: 16.5px;
  max-width: 68ch;
}

/* ---------- about (two column) ---------- */
.two-col {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 800px) {
  .two-col { grid-template-columns: 1fr; gap: 28px; }
}

.about-lead {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.5;
  color: var(--ink);
  margin: 0 0 20px;
}

/* ---------- themes grid ---------- */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: 8px;
}
@media (max-width: 760px) {
  .theme-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .theme-grid { grid-template-columns: 1fr; }
}
.theme-card {
  background: var(--paper-raised);
  padding: 26px 24px;
}
.theme-card .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stamp);
  margin-bottom: 10px;
  display: block;
}
.theme-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 8px;
  font-weight: 600;
}
.theme-card p {
  font-size: 14.5px;
  color: var(--slate);
  margin: 0;
}

/* ---------- CFP (on ink) ---------- */
.cfp {
  background: var(--ink);
  color: var(--paper);
}
.cfp .body-text { color: #C9D2C7; }
.cfp-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  margin-top: 36px;
}
@media (max-width: 800px) {
  .cfp-grid { grid-template-columns: 1fr; }
}
.cfp-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.cfp-list li {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--rule-dark);
  font-size: 15px;
  color: #DCE3D9;
}
.cfp-list li:last-child { border-bottom: 1px solid var(--rule-dark); }
.cfp-list li .mark {
  font-family: var(--font-mono);
  color: #9FC2AC;
  flex: none;
}

.cfp-card {
  background: rgba(241,240,234,0.05);
  border: 1px solid var(--rule-dark);
  border-radius: 4px;
  padding: 28px;
}
.cfp-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 14px;
  color: var(--paper);
}
.cfp-card ul {
  padding-left: 18px;
  margin: 0 0 22px;
  color: #C9D2C7;
  font-size: 14.5px;
}
.cfp-card li { margin-bottom: 8px; }

/* ---------- key dates: ledger ruler (signature element) ---------- */
.ruler {
  position: relative;
  margin-top: 56px;
  padding-top: 8px;
}
.ruler-line {
  position: relative;
  height: 2px;
  background: var(--rule);
  margin: 0 4px;
}
.ruler-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
}
.ruler-item {
  position: relative;
  padding-top: 28px;
  padding-right: 20px;
}
.ruler-item::before {
  /* tick mark */
  content: "";
  position: absolute;
  top: -30px;
  left: 0;
  width: 1px;
  height: 14px;
  background: var(--rule);
}
.ruler-item::after {
  /* stamp dot on the line */
  content: "";
  position: absolute;
  top: -33px;
  left: -5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--stamp);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--stamp);
}
.ruler-item .date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--stamp-deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 8px;
}
.ruler-item h4 {
  font-family: var(--font-display);
  font-size: 17px;
  margin: 0 0 6px;
  font-weight: 600;
}
.ruler-item p {
  font-size: 14px;
  color: var(--slate);
  margin: 0;
}

@media (max-width: 800px) {
  .ruler-track { grid-template-columns: 1fr; row-gap: 34px; }
  .ruler-line { display: none; }
  .ruler-item::before { top: -14px; height: 1px; width: 24px; }
  .ruler-item::after { top: -19px; left: -1px; }
}

/* ---------- venue / organizers ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}
@media (max-width: 800px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .card-grid { grid-template-columns: 1fr; }
}
.person-card {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  padding: 24px;
}
.person-card .avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 16px;
  margin-bottom: 16px;
}
.person-card .avatar-photo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  border: 1px solid var(--rule);
}
.person-card .inst-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--stamp-deep);
  background: rgba(75,107,87,0.1);
  padding: 2px 8px;
  border-radius: 2px;
  margin-top: 8px;
}
.person-card h4 {
  font-family: var(--font-display);
  font-size: 16.5px;
  margin: 0 0 4px;
}
.person-card p {
  font-size: 13.5px;
  color: var(--slate);
  margin: 0;
}

.venue-box {
  margin-top: 36px;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 700px) {
  .venue-box { grid-template-columns: 1fr; }
}
.venue-box h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin: 0 0 10px;
}
.venue-box p { color: var(--slate); font-size: 14.5px; margin: 0 0 6px; }

/* ---------- host institutions (hero) ---------- */
.host-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}
.host-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--paper);
  border: 1px solid var(--rule-dark);
  padding: 6px 14px;
  border-radius: 3px;
  background: rgba(241,240,234,0.05);
}

/* ---------- past edition ---------- */
.edition-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  padding: 22px 28px;
  margin-bottom: 40px;
}
.edition-banner h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin: 0 0 4px;
}
.edition-banner p {
  margin: 0;
  color: var(--slate);
  font-size: 14.5px;
}

.programme-list {
  list-style: none;
  margin: 0 0 40px;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.programme-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
@media (max-width: 640px) {
  .programme-list li { grid-template-columns: 1fr; gap: 4px; }
}
.programme-list .slot {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--stamp-deep);
  padding-top: 2px;
}
.programme-list .talk h4 {
  font-family: var(--font-display);
  font-size: 16.5px;
  margin: 0 0 4px;
}
.programme-list .talk p {
  font-size: 14px;
  color: var(--slate);
  margin: 0 0 4px;
}
.programme-list .talk .discussant {
  font-size: 13px;
  color: var(--stamp-deep);
  font-family: var(--font-mono);
}

/* ---------- footer ---------- */
footer {
  background: var(--ink);
  color: #9AA6B5;
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule-dark);
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
footer h5 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7C8A9C;
  margin: 0 0 16px;
}
footer .brand { color: var(--paper); margin-bottom: 12px; display: inline-block; }
footer p { font-size: 14px; max-width: 42ch; margin: 0; }
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin-bottom: 10px; font-size: 14px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--paper); }
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: #6E7A8A;
  font-family: var(--font-mono);
}

/* ---------- misc ---------- */
.placeholder {
  color: var(--stamp-deep);
  background: rgba(75,107,87,0.12);
  padding: 1px 5px;
  border-radius: 2px;
  font-size: 0.95em;
}
.section-on-ink .placeholder {
  color: #C9D2C7;
  background: rgba(241,240,234,0.1);
}