@keyframes colorShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.about-wrapper {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3), 0 10px 20px rgba(0, 0, 0, 0.2);
  position: relative;
  min-height: 100vh;
  padding: 100px 5% 80px;
  background: radial-gradient(
    ellipse at top,
    #1a1a2e 0%,
    #16213e 25%,
    #0f0f23 100%
  );
}

.main-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-header {
  text-align: center;
  margin-bottom: 80px;
  opacity: 0;
}

/* adding animation to text  */
.main-title {
  font-size: 4vw;
  font-weight: 800;
  margin-bottom: 20px;
  background: linear-gradient(
    135deg,
    #667eea 0%,
    #764ba2 25%,
    #f093fb 50%,
    #f5576c 75%,
    #4facfe 100%
  );
  background-size: 300% 300%;
  /* background bda kiya hai for animation */
  background-clip: text; /* sirf text pe asar kre */
  -webkit-background-clip: text;
  color: transparent;
  animation: colorShift 10s ease infinite;
  position: relative;
}

.title-underline {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  box-shadow: 0px 0px 8px rgba(102, 126, 234, 0.3);
  border-radius: 2px;
  animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
  0%,
  100% {
    opacity: 1;
    transform: translateX(-50%) scaleX(1);
  }
  50% {
    opacity: 0.7;
    transform: translateX(-50%) scaleX(1.2);
  }
}

.intro-text {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.3rem;
  color: #b8c6db;
  line-height: 1.8;
  font-weight: 300;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  margin-bottom: 80px;
}

.feature-card {
  position: relative;
  background: rgba(30, 30, 50, 0.8);
  border-radius: 24px;
  padding: 40px 30px;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  opacity: 0;
  transform: translateY(50px);
}

.card-overlay {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover .card-overlay {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-12px) rotateX(5deg);
  box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
  color: #667eea;
  text-align: center;
  animation: bobUp 2s ease-in-out infinite;
  transition: all 0.3s ease;
}

.feature-card:hover .card-icon {
  color: #764ba2;
  transform: scale(1.1);
}

@keyframes bobUp {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.card-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #ffffff;
  position: relative;
}

.card-description {
  color: #b8c6db;
  font-size: 1.1rem;
  line-height: 1.7;
  font-weight: 300;
}

/* Stats section */
.numbers-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 60px;
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-box {
  text-align: center;
  opacity: 0;
}

.big-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #667eea;
  display: block;
  margin-bottom: 8px;
}

.number-label {
  font-size: 1rem;
  color: #b8c6db;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.bottom-join {
  text-align: center;
  margin-top: 80px;
  opacity: 0;
}

.join-btn {
  display: inline-block;
  padding: 16px 40px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-shine {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

.join-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.join-btn:hover .btn-shine {
  left: 100%;
}

/* Sponsors section */
.sponsors-section {
  font-family: "Inter", "Segoe UI", Roboto, sans-serif;
   background: radial-gradient(
    ellipse at top,
    #1a1a2e 0%,      /* very dark blue */
    #1f1f3a 25%,     /* slightly lighter */
    #242446 50%,     /* medium dark blue */
    #1b1b3b 75%,     /* darker bluish shade */
    #0f0f23 100%     /* almost black */
  );
  background-size: 400% 400%;
  animation: colorShift 10s ease infinite;
  color: #eee;
  min-height: 35vh;
  padding: 80px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.sponsors-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 40px;
  color: #fff;
}

.sponsor-carousel {
  width: 100%;
  overflow: hidden;
}

.sponsor-track {
  display: flex;
  padding: 2rem 0;
  animation: scrollSponsors 15s linear infinite;
  gap: 0;
}

.sponsor-carousel:hover .sponsor-track {
  animation-play-state: paused;
}

.sponsor-logo {
  flex: 0 0 auto;
  width: 150px;
  height: 80px;
  margin: 0 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: transform 0.3s ease;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.sponsor-logo:hover {
  transform: scale(1.2);
}

@keyframes scrollSponsors {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

@media (max-width: 480px) {
  .sponsors-section {
    min-height: 25vh;
    padding: 40px 10px;
  }

  .sponsor-logo {
    width: 100px;
    height: 60px;
    margin: 0 15px;
  }
}

@media (max-width: 768px) {
  .intro-text,
  .card-description {
    font-size: 3vw;
  }
  .card-title,
  .number-label {
    font-size: 4vw;
  }
  .sponsors-title {
    font-size: 5vw;
  }
  .card-icon,
  .big-number {
    font-size: larger;
  }
  .main-title {
    font-size: 6vw;
  }
  .about-wrapper {
    padding: 60px 5% 40px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .feature-card {
    padding: 30px 25px;
  }

  .numbers-section {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
  .sponsors-section {
    min-height: 30vh;
    padding: 60px 15px;
  }
  .sponsor-logo {
    width: 120px;
    height: 70px;
    margin: 0 20px;
  }
  .sponsors-title {
    margin-bottom: 30px;
  }
}