:root {
  --tedx-red: #eb0028;
  --glass-bg: rgba(18, 18, 18, 0.52);
  --glass-blur: blur(6px);
}

/* ===============================
   RESET & GLOBAL STYLES
================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  background: #000;
  font-family: 'Segoe UI', sans-serif;
  color: #fff;
  overflow-x: hidden;
}
/* Hide default scrollbar track background */
::-webkit-scrollbar {
  width: 3px;
}
::-webkit-scrollbar {
  height: 3px; /* thinner horizontal scrollbar */
}

/* Scrollbar track */
::-webkit-scrollbar-track {
  background: transparent;
}

/* Scrollbar thumb (the draggable part) */
::-webkit-scrollbar-thumb {
  background-color: red; /* Change to white if you prefer */
  border-radius: 3px;
}

::-webkit-scrollbar-thumb {
  border-radius: 10px;
  min-height: 20px; /* Approx 3cm on high-res screens */
}


/* Optional: on hover */
::-webkit-scrollbar-thumb:hover {
  background-color: #ff4d4d;
}



  
  
   

   


  

/* ===============================
   NAVBAR
================================= */
.nav-container {
  width: 90%;
  height: 70px;
  margin-top: 20px;
  margin-left: 60px;
  padding: 0 30px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0);
  top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}

.logo {
  height: 50px;
}

.hamburger {
  width: 30px;
  height: 22px;
  position: relative;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.hamburger span {
  position: absolute;
  height: 3px;
  width: 100%;
  background: #fff;
  left: 0;
  transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { top: 18px; }

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 10px;
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 10px;
}
/* 
 ========================   
  FLOW OF EVENT SECTION
============================*/
:root {
  --tedx-red: #e62b1e;
}

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

.timeline-section {
  background: #000;
  padding: 60px 20px;
  font-family: 'Segoe UI', sans-serif;
  color: white;
  overflow-x: hidden;
}

.timeline-title {
  text-align: center;
  font-size: 3rem;
  font-family:  sans-serif; /* futuristic, clean look */
  color: #ffffff;
  margin-top: 20px;
  margin-bottom: 10px;
  text-shadow: 0 0 10px rgba(158, 60, 76, 0.6);
  letter-spacing: 2px;
}

/* Scroll snap container */
.timeline-container {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 20px 0 80px;
  position: relative;
}

.timeline {
  display: flex;
  align-items: center;
  width: max-content;
  position: relative;
  padding: 0 20px;
  gap: 60px;
}

/* Red glowing gradient line */
.timeline::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, transparent, var(--tedx-red), transparent);
  z-index: 0;
  transform: translateY(-50%);
}

/* Timeline Item */
.timeline-item {
  position: relative;
  z-index: 1;
  text-align: center;
  scroll-snap-align: center;
  cursor: pointer;
  transition: transform 0.3s ease;
  will-change: transform, opacity;
}

.timeline-item:hover {
  transform: translateY(-10px);
}

/* Circular image container */
.timeline-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid var(--tedx-red);
  background-color: #111;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 12px;
  transition: transform 0.4s ease;
}

.timeline-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* Label under each circle */
.label {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
}

/* Scrollbar styling */
.timeline-container::-webkit-scrollbar {
   top: 40px;
  height: 3px;
}
.timeline-container::-webkit-scrollbar-track {
  background: transparent;
}
.timeline-container::-webkit-scrollbar-thumb {
  background: var(--tedx-red);
  border-radius: 10px;
}

/* Shooting Star Animation */
.shooting-star {
  position: absolute;
  top: 37%; /* Center vertically */
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle, white, #e62b1e);
  box-shadow:
    0 0 6px #e62b1e,
    0 0 10px rgba(230, 43, 30, 0.5),
    0 0 12px rgba(255, 255, 255, 0.2);
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0; /* Behind images */
  animation: none;
}

.shooting-star::after {
  content: '';
  position: absolute;
  top: 50%;
  left: -30px;
  width: 30px;
  height: 2px;
  background: linear-gradient(to right, rgba(255,255,255,0.2), #e62b1e);
  transform: translateY(-50%);
  filter: blur(1px);
  opacity: 0.7;
}



.scroll-arrows {
  position: relative;
  width: 100%;
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
}

.scroll-btn {
  background: var(--tedx-red);
  color: white;
  border: none;
  padding: 8px 14px;
  font-size: 20px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(230, 43, 30, 0.5);
  transition: transform 0.2s ease, background 0.3s ease;
}

.scroll-btn:hover {
  background: #c42318;
  transform: scale(1.1);
}








/* Popup Card */
.popup-card {
  display: none;
  position: fixed;
  top: 65%;
  left: 50%;
  width: 80%;
  max-width: 400px;
  transform: translate(-50%, -50%) scale(0.8);
  background: #111;
  border: 2px solid var(--tedx-red);
  padding: 20px;
  color: white;
  z-index: 999;
  border-radius: 12px;
  box-shadow: 0 0 25px rgba(230, 43, 30, 0.4);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.popup-card.show {
  display: block;
  transform: translate(-50%, -50%) scale(1);
}

.popup-content h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.popup-content p {
  font-size: 16px;
  line-height: 1.5;
}

.popup-close {
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 24px;
  color: var(--tedx-red);
  cursor: pointer;
  font-weight: bold;
}

/* Responsive */
@media (max-width: 768px) {
  .timeline-circle {
    width: 90px;
    height: 90px;
  }

  .label {
    font-size: 14px;
  }

  .timeline-title {
    font-size: 30px;
  }

  .popup-content h3 {
    font-size: 18px;
  }

  .popup-content p {
    font-size: 14px;
  }
}

.timeline-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.timeline-item.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(3px);
  z-index: 998;
  display: none;
}

.popup-overlay.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.popup-card {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  width: 80%;
  max-width: 400px;
  transform: translate(-50%, -50%) scale(0.8) rotateX(20deg);
  background: #111;
  border: 2px solid var(--tedx-red);
  padding: 20px;
  color: white;
  z-index: 999;
  border-radius: 12px;
  box-shadow: 0 0 25px rgba(230, 43, 30, 0.4);
  transition: transform 0.4s ease, opacity 0.3s ease;
  opacity: 0;
}

.popup-card.show {
  display: block;
  opacity: 1;
  transform: translate(-50%, -50%) scale(1) rotateX(0);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.typing::after {
  content: "|";
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}


/* ===============================
   COUNTDOWN (CIRCULAR)
================================= */








/* ===============================
   OVERLAY MENU
================================= */
.overlay {
  position: fixed;
  top: 100px;
  left: 0;
  right:0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  display: none;
  z-index: 1500;
  animation: fadeIn 0.5s ease forwards;

}

.overlay.open {
  display: flex;
}

.overlay-content {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  width: 100%;
  padding: 0 8vw;
  gap: 20px;
}

.overlay-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.overlay-left ul {
  list-style: none;
}

.overlay-left li {
  margin: 20px 0;
  opacity: 0;
  transform: translateY(20px);
  animation: slideUp 0.4s ease forwards;
}

.overlay-left li:nth-child(n) {
  animation-delay: calc(0.1s + 0.1s * var(--i));
}

.overlay-left a {
  font-size: 2rem;
  color: white;
  text-decoration: none;
  position: relative;
  transition: transform 0.2s ease, text-shadow 0.3s ease;
}

.overlay-left a:hover {
  transform: scale(1.05);
}

.overlay-left a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--tedx-red);
  transition: width 0.3s ease-in-out;
}

.overlay-left a:hover::after {
  width: 100%;
}

.overlay-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.overlay-badge {
  max-width: 90%;
  max-height: 70%;
  animation: fadeIn 1s ease forwards;
  filter: drop-shadow(0 0 20px rgba(28, 19, 19, 0.2));
  margin-bottom: 6px;
}

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

.badge-tagline {
  font-size: 1rem;
  margin-top: 4px;
  color: white;
  font-weight: 400;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  animation: fadeIn 1.2s ease-in-out 0.3s forwards;
  opacity: 0;
}

/* ===============================
   ANIMATIONS
================================= */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glow {
  0% { filter: drop-shadow(0 0 4px #eb0028); }
  100% { filter: drop-shadow(0 0 15px #eb0028); }
}

/* ===============================
   RESPONSIVE DESIGN
================================= */
@media screen and (max-width: 768px)
       {
  .nav-container {
    width: 92%;
    margin-left: 4%;
    padding: 0 20px;
  }

  .overlay-content {
    flex-direction: column;
    padding: 20px;
    justify-content: center;
    align-items: center;
  }

  .overlay-left,
  .overlay-right {
    width: 100%;
    margin: 20px 0;
    text-align: center;
  }

  .overlay-left a {
    font-size: 1.2rem;
  }

  .overlay-badge {
    max-width: 65%;
  }

  .badge-tagline {
    font-size: 0.8rem;
  }

  .theme-text {
    font-size: 2.2rem;
  }

  .circle {
    width: 110px;
    height: 110px;
  }

  .circle svg {
    width: 110px;
    height: 110px;
  }

  .count h2 {
    font-size: 1.6rem;
  }

  .count small {
    font-size: 0.75rem;
  }

  .theme-title img {
    width: 240px;
  }
}
@media (max-width: 768px) {
  .theme-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .theme-description {
    text-align: left; /* or center if preferred */
  }
}

.speaker-container {
  display: flex;
  flex-direction: row;       /* Always row */
  flex-wrap: nowrap;         /* No wrapping on any screen */
  gap: 30px;
  overflow-x: auto;          /* Horizontal scroll */
  overflow-y: hidden;
  padding: 20px;
  max-width: 100%;
  scroll-behavior: smooth;

  /* Hide scrollbars */
  scrollbar-width: none;     /* Firefox */
}
.speaker-container::-webkit-scrollbar {
  display: none;             /* Chrome, Safari, Edge */
}

/* Speaker Card */
.flip-card {
  flex: 0 0 auto;
  width: 260px;
  height: 420px;
  perspective: 1000px;
  transition: transform 0.3s;
}
.flip-card:hover {
  transform: translateY(-6px);
}

.flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s ease-in-out;
  transform-style: preserve-3d;
}
.flip-card:hover .flip-inner {
  transform: rotateY(180deg) scale(1.02);
}

.flip-front, .flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #000;
  border-radius: 20px;
  border: 3px solid #ff1a1a;
  box-shadow: 0 0 20px rgba(255, 26, 26, 0.6);
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  text-align: center;
}

.flip-front img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 10px;
}

.flip-front h2 {
  font-size: 17px;
  font-weight: bold;
  color: white;
  margin: 10px 0 5px;
  text-transform: uppercase;
  line-height: 1.2;
  word-wrap: break-word;
}

.flip-front strong {
  font-size: 14px;
  color: #ccc;
  margin-bottom: 10px;
}

.flip-back {
  transform: rotateY(180deg);
  justify-content: center;
}

.flip-back p {
  font-size: 15px;
  line-height: 1.5;
  max-width: 220px;
  margin-bottom: 20px;
}

/* Socials */
.socials {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.socials a img {
  width: 22px;
  filter: brightness(0) invert(1);
  transition: transform 0.2s;
}
.socials a:hover img {
  transform: scale(1.2);
}
.logo-container {
  --logo-width: 200px;
  --logo-height: 100px;
  --gap: 30px;
  --duration: 60s;
  --scroll-start: 0;
  --scroll-end: calc(-50% - var(--gap)); /* Scroll half, since two sets */

  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 100vw;
  margin: auto;
  overflow: hidden;
}

.logo-scroll {
  display: flex;
  overflow: hidden;
  gap: var(--gap);
  mask-image: linear-gradient(
    to right,
    transparent,
    black 20%,
    black 80%,
    transparent
  );
}

.logo-scroll__wrapper {
  display: flex;
  flex-shrink: 0;
  gap: var(--gap);
  animation: scroll var(--duration) linear infinite;
}

.logo-scroll__wrapper:hover {
  animation-play-state: paused;
}

.logo-item {
  width: var(--logo-width);
  height: var(--logo-height);
  border-radius: 8px;
  background: #111;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.logo-item:hover {
  transform: scale(1.05);
}

@keyframes scroll {
  from {
    transform: translateX(var(--scroll-start));
  }
  to {
    transform: translateX(var(--scroll-end));
  }
}
.video {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  height: auto;
  aspect-ratio: 16 / 9;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: black;
  overflow: hidden;
  border-radius: 10px;
}

.video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .video {
    width: 100%;
    margin-top: 20px;
    aspect-ratio: 16 / 9;
    left: 0;
  }

  .video video {
    width: 100%;
    height: 100%;
  }
}
.img {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.img img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
  display: block;
}

/* Mobile */
@media (max-width: 768px) {
  .img {
    width: 90%;
    margin-top: 20px;
  }

  .img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}