/* ============================================================
   CA²RE Ghent 2027 — MATTERS
   Stylesheet — v2 (quiet / cool-neutral / cobalt accent)
   ============================================================ */

:root {
  --paper:      #fcfcfc;   /* near-white base            */
  --paper-2:    #f3f4f6;   /* light panel                */
  --white:      #ffffff;   /* cards                      */
  --ink:        #16171b;   /* near-black text            */
  --ink-soft:   #63666e;   /* secondary text             */
  --line:       #e5e6ea;   /* hairlines / borders        */
  --accent:     #2740db;   /* cobalt (pigment & pixel)   */
  --accent-dk:  #1b2da3;   /* accent hover               */
  /* alias kept for safety with any inline references */
  --clay:       var(--accent);

  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-display: "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", "Menlo", monospace;

  --maxw: 1140px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 1.02rem;
  line-height: 1.65;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dk); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); }
h3 { font-size: clamp(1.1rem, 1.7vw, 1.3rem); }
h4 { font-size: 0.95rem; letter-spacing: 0.02em; }
p  { margin: 0 0 1.05em; max-width: 68ch; }
strong { font-weight: 600; }

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  margin: 0 0 1rem;
  display: block;
}

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
section { padding-block: clamp(2.6rem, 5.5vw, 4.5rem); }
.section-line { border-top: 1px solid var(--line); }
.lede { font-size: clamp(1.05rem, 1.7vw, 1.25rem); line-height: 1.5; max-width: 46ch; color: var(--ink); font-weight: 400; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 62px;
}
.brand {
  font-family: var(--font-mono);
  font-weight: 500; font-size: 0.95rem; letter-spacing: 0.01em;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.brand:hover { color: var(--ink); text-decoration: none; }
.brand b { color: var(--accent); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 1.2rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-family: var(--font-mono);
  color: var(--ink-soft); font-size: 0.74rem; font-weight: 400;
  letter-spacing: 0.04em; text-decoration: none; text-transform: uppercase;
  padding-block: 4px; border-bottom: 1px solid transparent;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--ink); border-bottom-color: var(--accent);
}
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  color: var(--ink); font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.08em; text-transform: uppercase; padding: 0.5rem 0.8rem; cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-weight: 400; font-size: 0.78rem;
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: 0.75rem 1.3rem; border: 1px solid var(--ink);
  color: var(--ink); background: transparent; cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); text-decoration: none; }
.btn--accent { background: var(--accent); border-color: var(--accent); color: var(--white); }
.btn--accent:hover { background: var(--accent-dk); border-color: var(--accent-dk); color: var(--white); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.4rem; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(3rem, 7vw, 5.5rem); overflow: hidden; }
.hero__mark {
  font-family: var(--font-mono); font-weight: 400;
  font-size: clamp(0.9rem, 1.4vw, 1.05rem); line-height: 1;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft);
  margin: 0;
}
.hero__mark .amp { color: var(--ink-soft); }
.hero__title {
  font-size: clamp(3rem, 11vw, 8rem); line-height: 0.95; margin: 0.35em 0 0.3em;
  letter-spacing: -0.03em; font-weight: 500;
}
.hero__title span { color: var(--accent); }
.hero__meta {
  display: flex; flex-wrap: wrap; gap: 0.6rem 2.4rem; margin-top: 1.6rem;
  font-family: var(--font-mono); font-size: 0.9rem; letter-spacing: 0.01em;
}
.hero__meta .k { color: var(--accent); text-transform: uppercase; font-size: 0.66rem; letter-spacing: 0.1em; display: block; margin-bottom: 3px; }

/* ---------- Positions (Beyond / Via / ... matter) — quiet, static ---------- */
.positions { border-block: 1px solid var(--line); background: var(--paper-2); }
.positions .wrap { display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem; padding-block: 1rem; }
.positions__track {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem;
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.01em;
  color: var(--ink-soft); animation: none; white-space: normal;
}
.positions__track span { white-space: nowrap; }
.positions__track span b { color: var(--accent); font-weight: 500; }

/* ---------- Grid helpers ---------- */
.grid { display: grid; gap: clamp(1.4rem, 3vw, 2.4rem); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--intro { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr); align-items: start; }

/* ---------- Cards ---------- */
.card {
  border: 1px solid var(--line); padding: clamp(1.3rem, 2.2vw, 1.8rem);
  background: var(--white); display: flex; flex-direction: column; height: 100%;
}
.card h3 { margin-bottom: 0.35rem; }
.card p { color: var(--ink-soft); margin-bottom: 1rem; }
.card__link { margin-top: auto; font-family: var(--font-mono); font-weight: 400;
  text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.72rem; color: var(--accent); }
.card--link { transition: border-color .18s ease, transform .18s ease; }
.card--link:hover { border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Key dates table ---------- */
.dates { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.92rem; }
.dates td { padding: 0.9rem 0.5rem; border-bottom: 1px solid var(--line); vertical-align: baseline; }
.dates tr:last-child td { border-bottom: none; }
.dates .date { white-space: nowrap; font-weight: 500; width: 12rem; }
.dates .milestone { color: var(--ink-soft); }
.dates tr.is-conf .date, .dates tr.is-conf .milestone { color: var(--accent); }

/* ---------- Definition list / meta blocks ---------- */
.meta-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.meta-list li { display: grid; gap: 0.15rem; }
.meta-list .k { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.66rem; color: var(--accent); }
.meta-list .v { font-size: 1rem; }

/* ---------- Page header (interior pages) ---------- */
.page-head { padding-block: clamp(2.2rem, 5vw, 3.6rem) clamp(1.2rem, 2.5vw, 2rem); }
.page-head h1 { font-size: clamp(2rem, 5vw, 3.6rem); }

/* ---------- Prose ---------- */
.prose { max-width: 70ch; }
.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.6rem; }
.prose ul, .prose ol { padding-left: 1.2rem; margin: 0 0 1.05em; }
.prose li { margin-bottom: 0.35rem; }
.prose ul.plain { list-style: none; padding-left: 0; }
.callout {
  border-left: 2px solid var(--accent); padding: 0.1rem 0 0.1rem 1.1rem;
  font-size: clamp(1.15rem, 2vw, 1.5rem); line-height: 1.35; font-weight: 400; color: var(--ink);
  margin: 1.6rem 0; max-width: 46ch; letter-spacing: -0.01em;
}

/* ---------- Registers (three columns) ---------- */
.register { border-top: 1px solid var(--ink); padding-top: 0.9rem; }
.register .num { font-family: var(--font-mono); color: var(--accent); font-weight: 400; font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; }
.register h3 { margin: 0.4rem 0 0.5rem; }

/* ---------- Quiet panel band (was dark) ---------- */
.band { background: var(--paper-2); border-block: 1px solid var(--line); }
.band h2 { color: var(--ink); }
.band p { color: var(--ink-soft); }

/* ---------- Note / TBA ---------- */
.note {
  border: 1px solid var(--line); background: var(--white);
  padding: 1.05rem 1.2rem; font-size: 0.92rem; color: var(--ink-soft);
  display: flex; gap: 0.7rem; align-items: flex-start;
}
.note::before { content: "→"; color: var(--accent); }

/* ---------- Schedule ---------- */
.day { margin-bottom: 2.2rem; }
.day__head { border-top: 1px solid var(--ink); padding-top: 0.85rem; margin-bottom: 0.4rem; }
.day__head h3 { margin: 0; }
.day__sub { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.68rem; color: var(--accent); }
.sched { list-style: none; margin: 0.6rem 0 0; padding: 0; }
.sched li { display: grid; grid-template-columns: 7.5rem 1fr; gap: 0.4rem 1.4rem; padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
.sched .time { font-family: var(--font-mono); font-weight: 500; font-size: 0.85rem; white-space: nowrap; }
.sched .what { margin: 0; }
.sched .what strong { display: block; font-weight: 600; }
.sched .what span { color: var(--ink-soft); font-size: 0.92rem; }
.sched li.is-key .time, .sched li.is-key .what strong { color: var(--accent); }
.sched li.is-public .what strong::after { content: " · Public"; color: var(--accent); font-family: var(--font-mono); font-weight: 400; font-size: 0.64rem; letter-spacing: 0.06em; text-transform: uppercase; }
@media (max-width: 560px) { .sched li { grid-template-columns: 1fr; gap: 0.15rem; } }

/* ---------- Keynotes ---------- */
.keynotes { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1.3rem; margin-top: 1.4rem; }
.keynote { border: 1px solid var(--line); background: var(--white); padding: 1.4rem; }
.keynote .name { font-weight: 500; font-size: 1.25rem; letter-spacing: -0.01em; margin: 0 0 0.2rem; }
.keynote .aff { color: var(--ink-soft); font-size: 0.92rem; margin: 0; }
@media (max-width: 640px) { .keynotes { grid-template-columns: 1fr; } }

/* ---------- People (committee) ---------- */
.people { list-style: none; margin: 1.1rem 0 0; padding: 0; columns: 2; column-gap: 2.4rem; }
.people li { break-inside: avoid; padding: 0.5rem 0; border-bottom: 1px solid var(--line); }
.people .pname { display: block; font-weight: 500; }
.people .paff { display: block; color: var(--ink-soft); font-size: 0.85rem; }
@media (max-width: 640px) { .people { columns: 1; } }

/* ---------- Network partners ---------- */
.network { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.3rem; padding: 0; list-style: none; }
.network li {
  font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.01em;
  border: 1px solid var(--line); background: var(--white); padding: 0.5rem 0.8rem; color: var(--ink);
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--paper-2); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-block: 2.8rem 1.8rem; }
.site-footer h4 { color: var(--ink); margin-bottom: 0.7rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.7rem; font-weight: 500; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.4rem; }
.site-footer a { color: var(--ink-soft); font-size: 0.9rem; }
.site-footer a:hover { color: var(--accent); }
.footer-brand .hero__mark { font-size: 1.4rem; letter-spacing: -0.01em; text-transform: none; color: var(--ink); margin-bottom: 0.4rem; }
.footer-brand .hero__mark .amp { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line); padding-block: 1.3rem; font-size: 0.74rem; color: var(--ink-soft);
  display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; justify-content: space-between;
  font-family: var(--font-mono); letter-spacing: 0.01em;
}
.partners { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: center; margin-top: 1rem; }
.partners span {
  font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-soft);
  text-transform: uppercase; letter-spacing: 0.04em;
  border: 1px solid var(--line); padding: 0.45rem 0.75rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid--2, .grid--3, .grid--intro { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: inline-block; }
  .nav-links {
    display: none; position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 0.5rem var(--gutter) 1.2rem;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; width: 100%; padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .dates .date { width: auto; }
  .hero__meta { gap: 1rem; }
}