:root {
  --bg-dark: #0a0b10;
  --bg-darker: #050508;
  --text-light: #f4f4f9;
  --text-muted: #a0a0b0;
  --accent-primary: #00ff88;
  --accent-secondary: #9d00ff;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --font-heading: "Outfit", sans-serif;
  --font-body: "Inter", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

h2 span {
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.inline-heading {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.inline-logo {
  height: 1.2em;
  width: auto;
  display: inline-block;
  filter: drop-shadow(0 0 10px rgba(0, 255, 136, 0.4));
}

p {
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.text-center {
  text-align: center;
}

.mt-2 {
  margin-top: 2rem;
}

/* Layout */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

section {
  padding: 6rem 0;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(
    45deg,
    var(--accent-secondary),
    var(--accent-primary)
  );
  color: #fff;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 255, 136, 0.3);
}

.glow-btn {
  position: relative;
  z-index: 1;
}

.glow-btn::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(
    45deg,
    var(--accent-secondary),
    var(--accent-primary),
    var(--accent-secondary)
  );
  z-index: -1;
  border-radius: 32px;
  filter: blur(10px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.glow-btn:hover::before {
  opacity: 1;
}

.btn-primary.large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  z-index: 1000;
  transition: all 0.4s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 11, 16, 0.85);
  backdrop-filter: blur(12px);
  padding: 1rem 5%;
  border-bottom: 1px solid var(--glass-border);
}

.nav-logo-img {
  height: 40px;
  width: auto;
  display: block;
  filter: drop-shadow(0 0 10px rgba(0, 255, 136, 0.4));
  transition: transform 0.3s ease;
}

.logo-link:hover .nav-logo-img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--accent-primary);
  transition: width 0.3s;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--accent-primary);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-carousel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition:
    opacity 1s ease-in-out,
    transform 5s ease;
  transform: scale(1.05);
}

.carousel-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at center,
    rgba(10, 11, 16, 0.3) 0%,
    rgba(10, 11, 16, 0.8) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 18vh;
  padding-bottom: 12vh;
}

.hero-logo-img {
  max-width: 90%;
  width: 800px;
  height: auto;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.4));
  animation: float 6s ease-in-out infinite;
}

.hero-content h1 {
  margin: 0;
}

.hero-subheader-pill {
  display: inline-block;
  background: white;
  padding: 0.5rem 2rem;
  border-radius: 50px;
  margin-bottom: 1rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.hero-subheader {
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--bg-dark);
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-10px);
  }

  100% {
    transform: translateY(0px);
  }
}

.hero-content .subtitle {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: #e0e0e0;
}

/* Glitch Effect */
.glitch {
  position: relative;
  color: white;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
}

.glitch::before {
  left: 2px;
  text-shadow: -1px 0 var(--accent-primary);
  clip: rect(24px, 550px, 90px, 0);
  animation: glitch-anim-2 3s infinite linear alternate-reverse;
}

.glitch::after {
  left: -2px;
  text-shadow: -1px 0 var(--accent-secondary);
  clip: rect(85px, 550px, 140px, 0);
  animation: glitch-anim 2.5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
  0% {
    clip: rect(10px, 9999px, 86px, 0);
  }

  20% {
    clip: rect(66px, 9999px, 14px, 0);
  }

  40% {
    clip: rect(31px, 9999px, 97px, 0);
  }

  60% {
    clip: rect(52px, 9999px, 21px, 0);
  }

  80% {
    clip: rect(81px, 9999px, 53px, 0);
  }

  100% {
    clip: rect(11px, 9999px, 72px, 0);
  }
}

@keyframes glitch-anim-2 {
  0% {
    clip: rect(65px, 9999px, 100px, 0);
  }

  20% {
    clip: rect(3px, 9999px, 78px, 0);
  }

  40% {
    clip: rect(89px, 9999px, 13px, 0);
  }

  60% {
    clip: rect(31px, 9999px, 55px, 0);
  }

  80% {
    clip: rect(98px, 9999px, 21px, 0);
  }

  100% {
    clip: rect(42px, 9999px, 88px, 0);
  }
}

/* Hero Controls */
.carousel-controls {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 3rem;
  transform: translateY(-50%);
  z-index: 3;
}

.control-btn {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
  border: 1px solid var(--glass-border);
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s;
}

.control-btn:hover {
  background: var(--accent-primary);
  color: var(--bg-dark);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
}

.mouse {
  width: 25px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 20px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% {
    top: 6px;
    opacity: 1;
  }

  100% {
    top: 20px;
    opacity: 0;
  }
}

/* Sponsors Marquee */
.sponsors {
  padding: 3rem 0;
  background: #ffffff;
  border-bottom: 1px solid var(--glass-border);
  overflow: hidden;
  position: relative;
}

.sponsors .section-label {
  text-align: center;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 2rem;
  color: var(--bg-dark);
}

.sponsor-track-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
}

.sponsor-track {
  display: flex;
  width: max-content;
  animation: marquee 20s linear infinite;
  gap: 4rem;
  padding-left: 2rem;
  align-items: center;
}

.sponsor-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.sponsor-logo img {
  height: 80px;
  width: auto;
  object-fit: contain;
}

@keyframes marquee {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }

  /* half of track */
}

/* Overview Section */
.overview {
  background: rgb(12, 13, 20);
}

.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.overview-text p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.overview-image {
  width: 100%;
  height: 500px;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  background-size: cover;
  background-position: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  position: relative;
}

.overview-image::before {
  content: "";
  position: absolute;
  inset: -10px;
  background: linear-gradient(
    45deg,
    var(--accent-primary),
    transparent,
    var(--accent-secondary)
  );
  z-index: -1;
  border-radius: 24px;
  opacity: 0.3;
  filter: blur(20px);
}

/* Special Guests Section */
.special-guests {
  padding: 6rem 0;
  background: var(--bg-dark);
}

.guest-carousel {
  display: flex;
  overflow-x: auto;
  gap: 2rem;
  padding: 2rem 1rem;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  /* Hide scrollbar for cleaner look */
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.guest-carousel::-webkit-scrollbar {
  display: none;
}

.guest-card {
  flex: 0 0 auto;
  width: 250px;
  scroll-snap-align: center;
  text-align: center;
  background: var(--bg-darker);
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  transition:
    transform 0.3s ease,
    border-color 0.3s ease;
}

.guest-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-primary);
}

.guest-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  border: 3px solid var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.guest-img.placeholder-img {
  padding: 2.5rem;
  background-color: var(--glass-bg);
}

.guest-name {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.guest-role {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Agenda Section */
.agenda {
  background: var(--bg-dark);
}

.tabs-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(10px);
}

.tabs-list {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 1rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  padding: 0.5rem 1rem;
  position: relative;
}

.tab-btn.active {
  color: var(--accent-primary);
}

.tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -17px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-primary);
}

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.agenda-item {
  display: flex;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.agenda-item:last-child {
  border-bottom: none;
}

.time {
  font-family: var(--font-heading);
  color: var(--accent-secondary);
  font-weight: 700;
  min-width: 120px;
  font-size: 1.2rem;
}

.details h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

/* FAQ Section */
.faq {
  background: var(--bg-darker);
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 1.1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background 0.3s;
}

.accordion-header:hover {
  background: rgba(255, 255, 255, 0.05);
}

.accordion-header .icon {
  color: var(--accent-primary);
  font-size: 1.5rem;
  transition: transform 0.3s;
}

.accordion-item.active .icon {
  transform: rotate(45deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out;
}

.accordion-body p {
  padding: 0 1.5rem 1.5rem;
  margin: 0;
}

/* Footer Section */
.footer {
  padding: 6rem 0 3rem;
  background: radial-gradient(
    circle at bottom,
    rgba(157, 0, 255, 0.15),
    var(--bg-dark) 60%
  );
  border-top: 1px solid var(--glass-border);
}

.footer-links {
  margin: 3rem 0;
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.copyright {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.3);
}

/* Scroll Animations */
.content-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.content-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 3rem;
  }

  .hero-content .subtitle {
    font-size: 1.1rem;
  }

  .nav-links {
    display: none;
    /* simple mobile setup */
  }

  .agenda-item {
    flex-direction: column;
    gap: 0.5rem;
  }
}