/* IEACOR — Where Science Meets Clarity
   Shared stylesheet for all pages */

:root {
  --ink: #16140F;
  --paper: #F7F4EC;
  --paper2: #EFEBE0;
  --rule: #16140f22;
  --accent: #9A3412;
  --accent2: #1E3A2F;
  --muted: #5C564A;
  --serif: 'Newsreader', Georgia, serif;
  --sans: 'Inter Tight', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }
main { position: relative; z-index: 1; }
a { color: inherit; }

/* Header / Masthead */
.masthead { border-bottom: 2px solid var(--ink); background: var(--paper); }
.masthead .wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 26px;
  padding-bottom: 14px;
  flex-wrap: wrap;
  gap: 12px;
}
.logo {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 30px;
  letter-spacing: .22em;
  text-decoration: none;
  color: var(--ink);
}
.logo b { color: var(--accent); font-weight: 600; }
.tagline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}
.dateline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* Navigation */
nav.sub { border-bottom: 1px solid var(--ink); background: var(--paper); }
nav.sub .wrap {
  display: flex;
  gap: 30px;
  padding: 11px 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
nav.sub a {
  text-decoration: none;
  color: var(--muted);
  transition: color .2s;
}
nav.sub a:hover, nav.sub a.active { color: var(--accent); }
@media (max-width: 620px) {
  nav.sub .wrap { gap: 18px; font-size: 11px; }
}

/* Hero / Lead */
.lead { padding: 64px 0 56px; border-bottom: 1px solid var(--rule); }
.lead .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
.lead h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(38px, 6.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -.015em;
  max-width: 16ch;
}
.lead h1 em { font-style: italic; color: var(--accent2); }
.lead .stand {
  margin-top: 26px;
  font-size: clamp(19px, 2.4vw, 23px);
  max-width: 50ch;
  color: var(--ink);
}
.lead .stand b { font-weight: 500; }

/* Page header (for non-home pages) */
.page-header {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--rule);
}
.page-header .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
.page-header h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 5.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -.01em;
  max-width: 20ch;
}

/* Subscribe (Beehiiv embed container) */
.subscribe {
  margin-top: 38px;
  max-width: 480px;
}
.subscribe iframe,
.subscribe form,
.subscribe > div {
  width: 100% !important;
  max-width: 100% !important;
}
.micro {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* Generic button (kept for secondary actions) */
.btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .04em;
  padding: 15px 28px;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: .2s;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* Thesis / Premise section */
.thesis { padding: 60px 0; border-bottom: 1px solid var(--rule); }
.thesis .grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
}
@media (max-width: 760px) {
  .thesis .grid { grid-template-columns: 1fr; gap: 24px; }
}
.thesis h2 {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  line-height: 1.6;
}
.thesis p { font-size: 20px; line-height: 1.5; margin-bottom: 20px; }
.thesis p:last-child { margin-bottom: 0; }
.thesis .pull {
  font-style: italic;
  color: var(--accent2);
  font-size: 23px;
  line-height: 1.45;
}

/* Offer / What You Get cells */
.offer { padding: 60px 0; border-bottom: 1px solid var(--rule); }
.offer .head, .who .head, .topics .head, .section .head {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 34px;
}
.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (max-width: 680px) { .cols { grid-template-columns: 1fr; } }
.cell { background: var(--paper); padding: 30px 28px; }
.cell .n {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .1em;
}
.cell h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 24px;
  margin: 12px 0 8px;
}
.cell p { font-size: 16px; color: var(--muted); line-height: 1.5; }

/* Who It's For */
.who { padding: 56px 0; border-bottom: 1px solid var(--rule); }
.who p.intro {
  font-size: 21px;
  max-width: 40ch;
  margin-bottom: 28px;
}
.tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-family: var(--sans);
  font-size: 14px;
  padding: 8px 16px;
  border: 1.2px solid var(--ink);
  border-radius: 40px;
}

/* Topics list */
.topics { padding: 56px 0; border-bottom: 1px solid var(--rule); }
.toplist { column-count: 2; column-gap: 48px; }
@media (max-width: 620px) { .toplist { column-count: 1; } }
.toplist .item {
  break-inside: avoid;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  font-size: 19px;
}
.toplist .item span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 12px;
}

/* Generic content section (for About, Contact, etc.) */
.section { padding: 56px 0; border-bottom: 1px solid var(--rule); }
.section h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 32px;
  line-height: 1.2;
  margin-bottom: 22px;
  max-width: 22ch;
}
.section h3 {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin: 32px 0 14px;
}
.section p {
  font-size: 19px;
  line-height: 1.6;
  margin-bottom: 18px;
  max-width: 64ch;
}
.section p:last-child { margin-bottom: 0; }
.section ul, .section ol {
  margin: 0 0 18px 28px;
  font-size: 19px;
  line-height: 1.6;
  max-width: 62ch;
}
.section li { margin-bottom: 8px; }
.section .lead-para {
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  margin-bottom: 28px;
  max-width: 56ch;
}

/* End / Closing CTA */
.end { padding: 78px 0; text-align: center; }
.end h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.08;
  max-width: 18ch;
  margin: 0 auto 18px;
}
.end p { color: var(--muted); font-size: 18px; margin-bottom: 30px; }
.end .subscribe {
  margin: 30px auto 0;
  max-width: 480px;
}

/* Footer */
footer { border-top: 2px solid var(--ink); background: var(--paper2); }
footer .wrap {
  padding: 30px 32px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}
footer .fl {
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: .2em;
  font-size: 16px;
}
footer .fl b { color: var(--accent); }
footer .fr {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

.disclaim {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .04em;
  padding: 16px 32px;
  max-width: 1080px;
  margin: 0 auto;
  line-height: 1.7;
  border-top: 1px solid var(--rule);
}

/* Scroll reveal */
.rv { opacity: 0; transform: translateY(20px); transition: opacity .7s, transform .7s; }
.rv.in { opacity: 1; transform: none; }