:root {
  --bg: #050507;
  --bg-2: #0a0a0f;
  --ink: #ffffff;
  --ink-muted: rgba(255,255,255,0.62);
  --ink-subtle: rgba(255,255,255,0.38);
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.14);
  --blue: #1E5BFF;
  --blue-2: #0A2FBF;
  --blue-glow: #2E6BFF;
  --surface: rgba(255,255,255,0.03);
  --surface-2: rgba(255,255,255,0.05);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-feature-settings: "ss01","cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  line-height: 1.5;
}
::selection { background: var(--blue); color: white; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* ---------------- BACKGROUND ATMOSPHERE ---------------- */
.bg-atmosphere {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.bg-atmosphere::before {
  content: "";
  position: absolute;
  left: -20%;
  top: 10%;
  width: 90vw;
  height: 90vw;
  max-width: 1400px;
  max-height: 1400px;
  background: radial-gradient(circle at 30% 50%,
    rgba(46,107,255,0.55) 0%,
    rgba(30,91,255,0.28) 22%,
    rgba(10,47,191,0.12) 42%,
    rgba(5,10,40,0) 65%);
  filter: blur(20px);
}
.bg-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
  opacity: 0.6;
}
.grain {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.12;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.9'/></svg>");
}

/* ---------------- NAV ---------------- */
.page { position: relative; z-index: 2; }
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 32px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5,5,7,0.55);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(5,5,7,0.75); }

.logo {
  display: flex; align-items: center; gap: 12px;
  font-weight: 700;
  min-width: 0;
}
.nav-logo { height: 64px; width: auto; display: block; border-radius: 6px; }
.logo-mark {
  width: 34px; height: 34px;
  position: relative;
}
.logo-mark svg { display:block; width: 100%; height:100%; }
.logo-type {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  line-height: 1.1;
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.logo-type .warsaw { color: var(--ink-muted); font-weight: 600; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08) inset, 0 12px 40px rgba(30,91,255,0.35);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(255,255,255,0.12) inset, 0 18px 50px rgba(30,91,255,0.55); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  color: var(--ink);
}
.btn-ghost:hover { background: rgba(255,255,255,0.07); border-color: var(--line-strong); }
.arrow { width: 14px; height: 14px; display:inline-block; flex-shrink: 0; }

/* ---------------- LAYOUT HELPERS ---------------- */
.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 860px; margin: 0 auto; padding: 0 32px; }
section { position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-glow); box-shadow: 0 0 12px var(--blue); }

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; margin: 0; color: var(--ink); overflow-wrap: break-word; }
h1 { font-size: clamp(2.25rem, 6.2vw, 5.25rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4.4vw, 3.5rem); }
h3 { font-size: clamp(1.35rem, 2vw, 1.75rem); font-weight: 600; letter-spacing: -0.02em; }
p { color: var(--ink-muted); line-height: 1.6; margin: 0; }

/* ---------------- HERO ---------------- */
.hero { padding: 80px 0 120px; position: relative; }
.hero-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.hero-logo-wrap {
  display: flex; justify-content: flex-start;
  margin-bottom: 64px;
}
.hero-logo {
  display: flex; align-items: center; gap: 18px;
}
.hero-logo .mark {
  width: 68px; height: 68px;
}
.hero-logo .type {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.25;
}
.hero-logo .type .warsaw { color: var(--ink-muted); font-weight: 600; }

.hero h1 {
  max-width: 16ch;
  margin-bottom: 32px;
  padding-right: 0.15em;
}
.hero h1 .accent {
  display: block;
  background: linear-gradient(110deg, #7FA8FF 0%, #2E6BFF 45%, #0A2FBF 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  font-style: italic;
  font-weight: 600;
}
.hero-sub {
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  color: var(--ink-muted);
  max-width: 52ch;
  line-height: 1.6;
  font-weight: 400;
  margin-bottom: 44px;
}
.hero-cta-row {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
}
.hero-cta-row .btn { padding: 14px 24px; font-size: 15px; }

.hero-meta {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.hero-meta .item .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-bottom: 10px;
}
.hero-meta .item .val {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.hero-meta .item .val .tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--blue-glow);
  font-weight: 500;
  margin-left: 8px;
}

/* ---------------- MARQUEE ---------------- */
.marquee-wrap {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
  overflow: hidden;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(10px);
}
.marquee {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: scroll 40s linear infinite;
}
.marquee .chip {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.02em;
  display: flex; align-items: center; gap: 48px;
}
.marquee .chip .sep {
  color: var(--blue-glow);
  font-weight: 700;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------------- SECTION: DLA KOGO ---------------- */
.section { padding: 140px 0; }
.section-head {
  margin-bottom: 72px;
  max-width: 720px;
}
.section-head .eyebrow { margin-bottom: 28px; }
.section-head h2 { margin-bottom: 24px; }
.section-head p { font-size: 1.1rem; max-width: 48ch; }

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.audience-cell {
  background: var(--bg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  transition: background .3s ease;
  position: relative;
}
.audience-cell:hover { background: rgba(30,91,255,0.06); }
.audience-cell .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--ink-subtle);
  letter-spacing: 0.14em;
}
.audience-cell .ico {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(30,91,255,0.22), rgba(10,47,191,0.04));
  border: 1px solid rgba(30,91,255,0.25);
  display: flex; align-items: center; justify-content: center;
  color: #BCD1FF;
}
.audience-cell h4 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.audience-cell p {
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ---------------- SECTION: AGENDA ---------------- */
.agenda-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  overflow: hidden;
}
.agenda-row {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 28px 36px;
  border-bottom: 1px solid var(--line);
  transition: background .3s ease;
}
.agenda-row:last-child { border-bottom: none; }
.agenda-row:hover { background: rgba(30,91,255,0.04); }
.agenda-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: #9FBEFF;
  letter-spacing: 0.02em;
  font-weight: 600;
}
.agenda-title {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.agenda-dur {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--ink-subtle);
  letter-spacing: 0.08em;
}

/* ---------------- SECTION: ORGANIZER ---------------- */
.organizer {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}
.organizer-photo {
  aspect-ratio: 3/4;
  background: #0a0a0f;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.organizer-photo img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.02);
}
.organizer-photo::before {
  content: "";
  position: absolute;
  left: -30%; bottom: -20%;
  width: 140%; height: 60%;
  background: radial-gradient(ellipse at center, rgba(30,91,255,0.28), transparent 65%);
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 2;
}
.organizer-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.55) 100%);
  pointer-events: none;
  z-index: 1;
}
.organizer-photo .badge {
  position: absolute;
  left: 20px; bottom: 20px;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line-strong);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.organizer-photo .badge .live {
  width: 8px; height: 8px; border-radius: 50%; background: var(--blue-glow);
  box-shadow: 0 0 12px var(--blue);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(0.85); } }

.organizer-body h2 { margin-bottom: 28px; }
.organizer-body p {
  font-size: 1.05rem;
  margin-bottom: 18px;
}
.organizer-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 32px 0;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.organizer-stats .stat .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1;
}
.organizer-stats .stat .lbl {
  font-size: 13px;
  color: var(--ink-subtle);
  margin-top: 8px;
}
.organizer-body .btn { margin-top: 12px; }

/* ---------------- SECTION: FAQ ---------------- */
.faq-list {
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 28px 0;
  text-align: left;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
  transition: color .2s ease;
}
.faq-q:hover { color: var(--blue-glow); }
.faq-q .icon {
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  transition: transform .3s ease;
  color: var(--ink-muted);
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); color: var(--blue-glow); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
}
.faq-a-inner {
  padding: 0 0 28px 0;
  max-width: 62ch;
  color: var(--ink-muted);
  font-size: 1rem;
  line-height: 1.65;
}
.faq-item.open .faq-a { max-height: 400px; }

/* ---------------- SECTION: STEPS ---------------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex; flex-direction: column;
  min-height: 300px;
  position: relative;
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease;
}
.step-card:hover { transform: translateY(-4px); border-color: rgba(30,91,255,0.35); }
.step-card::before {
  content: "";
  position: absolute;
  top: -40%; right: -40%;
  width: 80%; height: 80%;
  background: radial-gradient(circle, rgba(30,91,255,0.2), transparent 65%);
  filter: blur(30px);
  opacity: 0;
  transition: opacity .4s ease;
}
.step-card:hover::before { opacity: 1; }
.step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink-subtle);
  letter-spacing: 0.14em;
  margin-bottom: 32px;
}
.step-title {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--ink);
}
.step-body { flex: 1; font-size: 0.98rem; line-height: 1.6; }
.step-link {
  margin-top: 24px;
  display: inline-flex; align-items: center; gap: 8px;
  color: #9FBEFF;
  font-size: 14px;
  font-weight: 600;
  transition: gap .25s ease;
}
.step-link:hover { gap: 12px; }

/* ---------------- FINAL CTA ---------------- */
.final-cta {
  position: relative;
  padding: 120px 0 120px;
  text-align: center;
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(30,91,255,0.25), transparent 60%);
  filter: blur(40px);
  z-index: -1;
}
.final-cta h2 {
  max-width: 18ch;
  margin: 24px auto 20px;
}
.final-cta p {
  max-width: 46ch;
  margin: 0 auto 40px;
  font-size: 1.1rem;
}
.final-cta .btn { padding: 16px 28px; font-size: 15px; }

/* ---------------- FOOTER ---------------- */
footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 40px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-left { display: flex; align-items: center; gap: 14px; }
.footer-left .mark { width: 32px; height: 32px; }
.footer-left .t { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; }
.footer-left .t .w { color: var(--ink-muted); }
.footer-links { display: flex; gap: 24px; font-size: 14px; color: var(--ink-muted); }
.footer-links a:hover { color: var(--ink); }
.copyright { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--ink-subtle); letter-spacing: 0.04em; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 960px) {
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .organizer { grid-template-columns: 1fr; gap: 40px; }
  .steps-grid { grid-template-columns: 1fr; }
  .agenda-row { grid-template-columns: 120px 1fr; gap: 16px; padding: 22px 24px; }
  .agenda-dur { display: none; }
  .hero-meta { grid-template-columns: 1fr; gap: 20px; }
  .hero { padding: 48px 0 80px; }
  .section { padding: 90px 0; }
}
@media (max-width: 640px) {
  .nav { padding: 12px 20px; }
  .nav-logo { height: 64px; }
  .nav .btn { padding: 9px 14px; font-size: 13px; gap: 8px; }
  .container, .narrow, .hero-inner { padding: 0 20px; }
  .audience-grid { grid-template-columns: 1fr; }
  .logo-type .warsaw { display: none; }
  .hero-logo .type { font-size: 15px; }
  .hero-logo .mark { width: 56px; height: 56px; }
  .hero-logo-wrap { margin-bottom: 48px; }
  .hero h1 { max-width: 100%; }
  .hero-sub { font-size: 1rem; }
  .hero-cta-row .btn { padding: 12px 18px; font-size: 14px; }
}
@media (max-width: 420px) {
  .nav { padding: 10px 16px; }
  .nav-logo { height: 56px; }
  .nav .btn { padding: 7px 11px; font-size: 12px; gap: 5px; }
  .nav .btn .arrow { width: 12px; height: 12px; }
  .container, .narrow, .hero-inner { padding: 0 16px; }
  h1 { font-size: clamp(2rem, 9vw, 2.5rem); }
  .hero-cta-row { flex-direction: column; align-items: stretch; }
  .hero-cta-row .btn { justify-content: center; }
}

/* reveal animation */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } .marquee { animation: none; } }