/* ============================================
   #MAC26 — Mega Agent Camp 2026
   Liquid Glass Futurist System
   ============================================ */

:root {
  --bg-0: #050506;
  --bg-1: #0a0a0d;
  --bg-2: #111115;
  --ink-0: #ffffff;
  --ink-1: rgba(255, 255, 255, 0.92);
  --ink-2: rgba(255, 255, 255, 0.62);
  --ink-3: rgba(255, 255, 255, 0.38);
  --ink-4: rgba(255, 255, 255, 0.14);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);

  --accent-h: 25;
  --accent: oklch(0.62 0.19 var(--accent-h));
  --accent-soft: oklch(0.62 0.19 var(--accent-h) / 0.14);
  --accent-glow: oklch(0.62 0.19 var(--accent-h) / 0.55);
  --accent-deep: oklch(0.42 0.16 var(--accent-h));

  --density: 1;

  --font-display: "Barlow Condensed", "Oswald", Impact, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --radius-xl: 32px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg-0);
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ================= Ambient background ================= */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.ambient::before,
.ambient::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
}
.ambient::before {
  width: 800px; height: 800px;
  top: -200px; left: -100px;
  background: var(--accent);
}
.ambient::after {
  width: 600px; height: 600px;
  bottom: -150px; right: -100px;
  background: oklch(0.35 0.16 var(--accent-h));
  opacity: 0.7;
}
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.4;
  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='200' height='200' filter='url(%23n)' opacity='0.5'/></svg>");
}

/* animations */
@keyframes pulse-red {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.08); }
}
.no-anim .ambient::before,
.no-anim .ambient::after { animation: none !important; }
.ambient::before { animation: pulse-red 7s ease-in-out infinite; }
.ambient::after { animation: pulse-red 9s ease-in-out infinite reverse; }

/* ================= Layout ================= */
.page { position: relative; z-index: 2; }

.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

section {
  padding: calc(120px * var(--density)) 0;
  position: relative;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 14px var(--accent-glow);
  animation: pulse-red 2s ease-in-out infinite;
}
.no-anim .eyebrow::before { animation: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.92;
  margin: 0;
}

.display {
  font-size: clamp(64px, 11vw, 220px);
  font-weight: 900;
  letter-spacing: -0.025em;
}
.h1 { font-size: clamp(48px, 7vw, 120px); }
.h2 { font-size: clamp(36px, 5vw, 80px); }
.h3 { font-size: clamp(24px, 2.4vw, 38px); }

/* ================= Glass ================= */
.glass {
  background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  position: relative;
  overflow: hidden;
}
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(145deg, rgba(255,255,255,0.22), transparent 40%, transparent 60%, rgba(255,255,255,0.08));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* ================= Buttons ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease, background 0.3s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 40px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.7s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 56px var(--accent-glow), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-primary:hover::after { transform: translateX(100%); }
.btn-ghost {
  background: rgba(255,255,255,0.04);
  color: var(--ink-0);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.28);
}

.btn-arrow {
  width: 18px; height: 18px;
  display: inline-block;
  position: relative;
}
.btn-arrow::before {
  content: "";
  position: absolute;
  inset: 0;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.5'><path d='M5 12h14m-6-6l6 6-6 6'/></svg>") center/contain no-repeat;
  mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.5'><path d='M5 12h14m-6-6l6 6-6 6'/></svg>") center/contain no-repeat;
}

/* ================= Nav ================= */
.nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 8px 20px;
  border-radius: 999px;
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  background: rgba(10, 10, 13, 0.65);
  border: 1px solid var(--line);
}
.nav-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
  padding-right: 12px;
  border-right: 1px solid var(--line);
  display: flex; align-items: center; gap: 8px;
}
.nav-brand .dot {
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
  animation: pulse-red 2s infinite;
}
.no-anim .nav-brand .dot { animation: none; }
.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-link {
  padding: 8px 14px;
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--ink-0); background: rgba(255,255,255,0.05); }
.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 10px 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 0 20px var(--accent-glow);
}
@media (max-width: 820px) {
  .nav-links { display: none; }
}

/* ================= Marquee ================= */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 20px 0;
  background: rgba(0,0,0,0.3);
}
.marquee-track {
  display: flex;
  gap: 60px;
  white-space: nowrap;
  animation: marquee 40s linear infinite;
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 28px;
  letter-spacing: 0.02em;
}
.no-anim .marquee-track { animation: none; }
.marquee-track span { color: var(--ink-2); }
.marquee-track .accent { color: var(--accent); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ================= Utility ================= */
.mono { font-family: var(--font-mono); }
.accent-text { color: var(--accent); }
.grid { display: grid; gap: 24px; }
.flex { display: flex; }
.center { align-items: center; justify-content: center; }

/* ================= Speakers ================= */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.speaker-card {
  transition: transform 0.4s ease, border-color 0.3s;
}
.speaker-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}
@media (max-width: 900px) {
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .speakers-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
}

/* ================= Mobile responsiveness ================= */
@media (max-width: 720px) {
  section { padding: calc(72px * var(--density)) 0; }
  .container { padding: 0 20px; }

  /* Sticky heading columns must NOT stay pinned when stacked single-column,
     otherwise they overlap the content below on scroll. */
  .sticky-col { position: static !important; top: auto !important; }

  /* Nav: compact */
  .nav {
    top: 12px;
    left: 12px; right: 12px;
    transform: none;
    width: auto;
    justify-content: space-between;
    padding: 8px 8px 8px 16px;
  }
  .nav-brand img { height: 22px !important; }
  .nav-cta { padding: 9px 14px; font-size: 12px; }

  /* Marquee a touch smaller */
  .marquee-track { font-size: 20px; gap: 40px; }
}

@media (max-width: 480px) {
  .nav-brand { padding-right: 8px; }
  .marquee-track { font-size: 17px; }
}