/* =====================================================================
   Biza WCUC 2026 splash page
   Palette lifted from themes/theme-biza.css:
     Trust Blue          #5B9BF0
     Bold Blue           #040B2E
     Node Pink           #C0397F
     Peer to Peer Purple #6A2CA5
     True Blue           #2417D6
   ===================================================================== */

:root {
  --biza-trust:  #5B9BF0;
  --biza-bold:   #040B2E;
  --biza-pink:   #C0397F;
  --biza-purple: #6A2CA5;
  --biza-true:   #2417D6;

  --biza-ink:    #0B1437;
  --biza-muted:  #9FB2E6;
  --biza-paper:  #F7F9FE;
  --biza-line:   #E2E8F8;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  color: #EAF0FF;
  background: var(--biza-bold);
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 700px at 78% -10%, rgba(36,23,214,0.55), transparent 60%),
    radial-gradient(900px 600px at 0% 110%, rgba(192,57,127,0.40), transparent 55%),
    linear-gradient(160deg, var(--biza-bold) 0%, #0A1147 100%);
  background-attachment: fixed;
}

/* Brand stripe at the very top of the page. */
body::before {
  content: "";
  position: fixed;
  left: 0; right: 0; top: 0;
  height: 6px;
  background: linear-gradient(90deg,
    var(--biza-trust), var(--biza-true), var(--biza-purple), var(--biza-pink));
  z-index: 20;
}

.page {
  max-width: 1160px;
  margin: 0 auto;
  padding: 40px 40px 60px;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 8px 0 40px;
}
.brand img {
  height: 34px;
  width: auto;
  display: block;
}
.topnav {
  display: flex;
  gap: 26px;
  font-weight: 600;
  font-size: 15px;
}
.topnav a {
  color: #BFD3FF;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 120ms ease, border-color 120ms ease;
}
.topnav a:hover { color: var(--biza-trust); border-bottom-color: var(--biza-trust); }

/* ---------- Kicker (uppercase brand tag) ---------- */
.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--biza-trust);
  margin-bottom: 20px;
}
.kicker.pink { color: var(--biza-pink); }

/* ---------- Hero ---------- */
.hero {
  padding: 40px 0 80px;
}
.hero h1 {
  font-size: clamp(40px, 6.4vw, 78px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 0 0 28px;
}
.hero .lede {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.5;
  color: #C9D6FA;
  max-width: 720px;
  margin: 0 0 36px;
}
.hero .lede strong { color: var(--biza-trust); font-weight: 700; }

/* ---------- CTAs ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
  border: 1px solid transparent;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--biza-true), var(--biza-pink));
  box-shadow: 0 10px 30px rgba(36,23,214,0.35);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 36px rgba(192,57,127,0.35); }
.btn-ghost {
  color: #EAF0FF;
  background: transparent;
  border-color: rgba(234,240,255,0.28);
}
.btn-ghost:hover { border-color: var(--biza-trust); color: var(--biza-trust); }

/* ---------- Meta row (Where / When / Who) ---------- */
.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  padding: 24px 28px;
  border: 1px solid rgba(234,240,255,0.14);
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(6px);
}
.meta > div { min-width: 0; }
.meta-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--biza-muted);
  margin-bottom: 6px;
}
.meta-value {
  display: block;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

/* ---------- Sections ---------- */
.section {
  padding: 72px 0 24px;
  border-top: 1px solid rgba(234,240,255,0.10);
}
.section h2 {
  color: #fff;
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.section h2::after {
  content: "";
  display: block;
  width: 84px;
  height: 5px;
  margin-top: 14px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--biza-true), var(--biza-pink));
}
.section p {
  color: #C9D6FA;
  font-size: 18px;
  line-height: 1.55;
  max-width: 780px;
}
.section p strong { color: var(--biza-trust); font-weight: 700; }
.section p em { color: var(--biza-pink); font-style: normal; font-weight: 700; }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin: 40px 0 8px;
}
.card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(234,240,255,0.14);
  border-radius: 18px;
  padding: 26px 26px 22px;
  box-shadow: 0 10px 34px rgba(4,11,46,0.28);
}
.card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 800;
  color: var(--biza-trust);
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
  color: #C9D6FA;
}
.card p strong { color: #fff; }

/* ---------- Session cards (two featured sessions) ---------- */
.sessions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 40px 0 12px;
}
.session-card {
  position: relative;
  padding: 30px 30px 28px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(234,240,255,0.18);
  box-shadow: 0 14px 40px rgba(4,11,46,0.32);
  overflow: hidden;
}
.session-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--biza-true), var(--biza-purple), var(--biza-pink));
}
.session-card:first-child::before {
  /* Featured session (Max, Presentation Hub) gets the pink-forward stripe. */
  background: linear-gradient(180deg, var(--biza-pink), var(--biza-purple), var(--biza-true));
}
.session-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  margin-bottom: 14px;
}
.session-when,
.session-where {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
}
.session-when {
  color: #fff;
  background: linear-gradient(135deg, var(--biza-true), var(--biza-pink));
  box-shadow: 0 6px 20px rgba(36,23,214,0.30);
}
.session-where {
  color: var(--biza-trust);
  background: rgba(91,155,240,0.10);
  border: 1px solid rgba(91,155,240,0.30);
}
.session-card h3 {
  margin: 0 0 14px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.015em;
  line-height: 1.22;
}
.session-card > p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.55;
  color: #C9D6FA;
}
.session-card > p em { color: var(--biza-pink); font-style: normal; font-weight: 700; }
.session-by {
  margin: 0 !important;
  padding-top: 14px;
  border-top: 1px solid rgba(234,240,255,0.14);
  font-size: 14px;
  color: var(--biza-muted);
}
.session-by strong { color: #fff; font-weight: 700; }

/* ---------- Footer ---------- */
.footer {
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid rgba(234,240,255,0.10);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.foot-brand img { height: 26px; width: auto; opacity: 0.9; }
.foot-note {
  color: #6E7FB5;
  font-size: 13px;
  max-width: 640px;
  margin: 0;
  text-align: right;
  line-height: 1.5;
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .page { padding: 28px 22px 48px; }
  .topbar { padding-bottom: 24px; }
  .topnav { gap: 18px; font-size: 14px; }
  .hero { padding: 20px 0 56px; }
  .meta { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .sessions { grid-template-columns: 1fr; }
  .footer { flex-direction: column; align-items: flex-start; }
  .foot-note { text-align: left; }
}