:root {
  --color-bg: #030308;
  --color-surface: #0d0d18;
  --color-primary: #7C3AED;
  --color-cta: #E8197D;
  --color-cta-hover: #d41570;
  --color-accent: #C084FC;
  --color-text: #F8F8FA;
  --color-muted: #8B8B9E;
  --font: 'Google Sans', sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  font-weight: 400;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 18px;
  line-height: 1.65;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}


/* ===== HERO ===== */
.hero {
  position: relative;
  text-align: center;
  padding: 72px 24px 100px;
  overflow: hidden;
  border-radius: 0 0 68px 68px;
}

/* Stripped gradient background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, #0000, #0000001e) 0 0 / 15px 100%,
    linear-gradient(90deg, #000, #0000, #000) 0 0 / 100% 100%,
    linear-gradient(#000 15%, #331c52, #6b2fa8) 0 0 / 100% 100%;
}

/* Ambient glow orb */
.hero-orb {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.22) 0%, transparent 68%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-headline {
  font-weight: 700;
  font-size: clamp(32px, 5.5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 32px;
  text-wrap: balance;
}

.hero-headline-question {
    font-size: clamp(28px, 4.5vw, 42px);
  display: block;
  color: var(--color-accent);
  margin-top: 0.15em;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(248, 248, 250, 0.9);
  max-width: 640px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.hero-support {
  font-size: clamp(15px, 1.7vw, 17px);
  color: var(--color-muted);
  max-width: 520px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-support strong {
  color: var(--color-text);
  font-weight: 700;
}

/* ===== CTA BUTTON ===== */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 60px;
  padding: 0 40px;
  color: #fff;
  font-family: var(--font);
  font-weight: 700;
  font-size: 16px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 0.01em;
  background-size: 280% auto;
  background-image: linear-gradient(
    325deg,
    rgb(8, 157, 52) 0%,
    rgb(26, 255, 148) 55%,
    rgb(9, 169, 81) 90%
  );
  box-shadow:
    0px 0px 20px rgba(6, 153, 112, 0.5),
    0px 5px 5px -1px rgba(20, 180, 124, 0.25),
    inset 4px 4px 8px rgba(150, 255, 201, 0.35),
    inset -4px -4px 8px rgba(10, 140, 92, 0.35);
  transition: 0.8s ease;
}

.cta-btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.cta-btn:hover {
  background-position: right top;
   transition: 0.8s ease;
}

.cta-btn:is(:focus, :focus-visible, :active) {
  outline: none;
  box-shadow:
    0 0 0 3px #fff,
    0 0 0 6px rgb(10, 194, 111);
}

@media (prefers-reduced-motion: reduce) {
  .cta-btn {
    transition: linear;
  }
}

/* ===== EVENT TOPICS SECTION ===== */
.event-topics {
  padding: 80px 0 100px;
  position: relative;
}

.event-topics .container {
  max-width: 1280px;
}

.event-topics::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 58, 237, 0.4), transparent);
}

.topics-title {
  text-align: center;
  font-weight: 700;
  font-size: clamp(32px, 4.4vw, 42px);
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 48px;
  line-height: 1.2;
}

.topics-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}

.topic-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  border: 1px solid rgba(139, 139, 158, 0.12);
  border-radius: 16px;
  background: rgba(13, 13, 24, 0.6);
  font-size: clamp(13px, 1.4vw, 15px);
  color: rgba(248, 248, 250, 0.85);
  line-height: 1.6;
}

.topic-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(192, 132, 252, 0.1);
  color: var(--color-accent);
}

.topic-icon svg {
  width: 22px;
  height: 22px;
}

/* ===== TRUST SEALS ===== */
.trust-seals {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
  padding: 24px 0;
}

.seal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.seal svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.seal-divider {
  color: rgba(139, 139, 158, 0.35);
  font-size: 18px;
  line-height: 1;
}

/* ===== CTA WRAP ===== */
.cta-wrap {
  text-align: center;
}

/* ===== FOOTER ===== */
.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 40px 24px 60px;
  border-top: 1px solid rgba(139, 139, 158, 0.1);
}

.footer-logo {
  opacity: 0.5;
}

.footer-domain {
  font-size: 12px;
  color: var(--color-muted);
  opacity: 0.55;
  letter-spacing: 0.06em;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.footer-links a {
  font-size: 11px;
  color: var(--color-muted);
  opacity: 0.5;
  letter-spacing: 0.04em;
  transition: opacity 0.2s;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-sep {
  color: var(--color-muted);
  opacity: 0.3;
  font-size: 12px;
}

/* ===== MOBILE FIXED CTA ===== */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom));
  background: rgba(3, 3, 8, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(232, 25, 125, 0.25);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.mobile-cta-bar.visible {
  transform: translateY(0);
}

.mobile-cta-bar .cta-btn {
  width: 100%;
  height: 54px;
  font-size: 15px;
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.32s; }

/* ===== AI ICONS MARQUEE ===== */
.ai-icons {
  max-width: 710px;
  margin: 0 auto 56px;
  overflow: hidden;
  pointer-events: none;
  mask-image: linear-gradient(90deg, transparent 0, #000 10%, #000 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 10%, #000 90%, transparent 100%);
}

.ai-icons-marquee {
  display: inline-flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 18px;
  padding: 0 24px;
  animation: aiIconsScroll 22s linear infinite;
  will-change: transform;
}

.ai-icons:hover .ai-icons-marquee {
  animation-play-state: paused;
}

.ai-icons-track {
  display: inline-flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 18px;
  min-width: max-content;
}

.ai-icons-track[aria-hidden="true"] {
  display: inline-flex;
}

.ai-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.ai-icon-circle {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(19, 19, 32, 0.98), rgba(11, 11, 20, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.ai-icon-circle::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.16), transparent 48%);
  opacity: 0.7;
  z-index: 0;
}

.ai-icon-circle::after {
  content: '';
  position: absolute;
  inset: auto 12px 8px;
  height: 14px;
  border-radius: 999px;
  background: var(--logo-glow, rgba(255, 255, 255, 0.28));
  filter: blur(16px);
  opacity: 0.95;
  z-index: 0;
}

.ai-icon-circle:hover {
  transform: translateY(-6px) scale(1.04);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow:
    0 18px 34px rgba(0, 0, 0, 0.34),
    0 0 28px var(--logo-glow, rgba(255, 255, 255, 0.18));
}

.ai-icon-image {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  object-fit: contain;
  filter:
    drop-shadow(0 0 10px var(--logo-glow, rgba(255, 255, 255, 0.22)))
    drop-shadow(0 0 22px var(--logo-glow, rgba(255, 255, 255, 0.18)));
}

.ai-icon-label {
  font-family: var(--font);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(248, 248, 250, 0.72);
}

/* Icon glow colors */
.ai-icon-circle.chatgpt    { --logo-glow: rgba(16, 163, 127, 0.58); }
.ai-icon-circle.claude     { --logo-glow: rgba(212, 165, 116, 0.58); }
.ai-icon-circle.gemini     { --logo-glow: rgba(104, 140, 255, 0.56); }
.ai-icon-circle.midjourney { --logo-glow: rgba(190, 199, 255, 0.42); }
.ai-icon-circle.elevenlabs { --logo-glow: rgba(255, 255, 255, 0.4); }
.ai-icon-circle.copilot    { --logo-glow: rgba(70, 190, 255, 0.58); }
.ai-icon-circle.perplexity { --logo-glow: rgba(32, 178, 170, 0.56); }
.ai-icon-circle.grok       { --logo-glow: rgba(29, 161, 242, 0.58); }
.ai-icon-circle.deepseek   { --logo-glow: rgba(87, 137, 255, 0.58); }

@keyframes aiIconsScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 7px)); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .topics-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .topics-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 400px) {
  .topics-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 48px 24px 72px;
  }

  .ai-icons {
    max-width: 100%;
    margin: 0 0 40px;
  }

  .ai-icons-marquee {
    gap: 14px;
    padding: 0 20px;
    animation-duration: 18s;
  }

  .ai-icons-track {
    gap: 14px;
  }

  .ai-icon-circle {
    width: 60px;
    height: 60px;
    border-radius: 18px;
  }

  .ai-icon-label {
    font-size: 9px;
  }

  .ai-icon-image {
    width: 30px;
    height: 30px;
  }

  .cta-btn {
    width: 100%;
    padding: 0 24px;
    font-size: 15px;
  }

  .trust-seals {
    gap: 12px;
  }

  .seal-divider {
    display: none;
  }

  .mobile-cta-bar {
    display: block;
  }

  .site-footer {
    padding-bottom: 100px;
  }
}

@media (max-width: 480px) {
  .topic-item {
    padding: 20px 18px;
  }
}