body {
  margin: 0;
  font-family: 'Poppins', Arial, Helvetica, sans-serif;
  background: #f7fafd;
  color: #222;
}
html {
    scroll-behavior: smooth;
  }

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

header {
  background: linear-gradient(90deg, #1A237E 0%, #1976D2 100%);
  color: #fff;
  padding: 1rem 0;
  position: sticky;
  border-bottom: 1px solid #ffff;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}
.logo{
  display: flex;
}
.logo-heading {
  font-weight: bold;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  /* width: 50px; */

}
nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}
nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  transition: background 0.2s, color 0.2s;
}
nav a:hover, nav a.active {
  background: #ffb300;
  color: #2b2b2b;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  margin-left: 1rem;
}
.hero {
  background: linear-gradient(90deg, #1A237E 0%, #1976D2 100%);
  color: #fff;
  padding: 3rem 0 2rem 0;
  text-align: center;
}
.hero h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}
.btn-primary {
  display: inline-block;
  background: #ffb300;
  color: #ffff;
  padding: 0.75rem 2rem;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  margin: 1rem 0;
  transition: background 0.2s;
}
.btn-primary:hover {
  background: #ffb300;
  color: #2b2b2b;
}
.prizes {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 1.5rem 0 0.5rem 0;
  font-size: 1.1rem;
}
.prizes div {
  background: #033160;
  border: 2px solid #b3d1ff;
  border-radius: 12px;
  padding: 1rem 1.5rem;
  min-width: 140px;
  text-align: center;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.15s;
}
.prizes div:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 6px 18px rgba(0,86,179,0.10);
}
.prizes i.fa-trophy {
  color: #ffb300;
  font-size: 1.6rem;
  margin-bottom: 0.3rem;
}
.open-to {
  margin-top: 0.5rem;
  font-style: italic;
}
section {
  margin: 2.5rem 0;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  padding: 2rem 0;
}
section h2 {
  color: #2b2b2b;
  margin-bottom: 1rem;
}
.why {
  background: none;
  box-shadow: none;
  padding: 2.5rem 0 0 0;
}
.why p, .about p {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.who {
  background: linear-gradient(90deg, #e3f0ff 60%, #f7fafd 100%);
  border: none;
  box-shadow: none;
  padding: 2.5rem 0;
}
.who h2, .who-intro {
  text-align: center;
}
.who-intro {
  font-size: 1.08rem;
  margin-bottom: 1.5rem;
  color: #1967b5;
  font-weight: 500;
}
.who-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
.who-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,86,179,0.07);
  padding: 1.2rem 1.8rem;
  min-width: 220px;
  max-width: 320px;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: 1.08rem;
  font-weight: 500;
  color: #1967b5;
  transition: transform 0.15s, box-shadow 0.15s;
  border: 2px solid #e3f0ff;
}
.who-card:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 8px 24px rgba(0,86,179,0.13);
  border-color: #b3d1ff;
}
.who-card i {
  font-size: 2rem;
  color: #0056b3;
  margin-top: 0.1rem;
}
.who-card small {
  display: block;
  font-size: 0.92em;
  color: #666;
  font-weight: 400;
  margin-top: 0.2em;
}
.themes {
  background: linear-gradient(90deg, #f7fafd 60%, #e3f0ff 100%);
  border: none;
  box-shadow: none;
  padding: 2.5rem 0;
}
.themes h2, .themes-intro {
  text-align: center;
}
.themes-intro {
  font-size: 1.08rem;
  color: #1967b5;
  font-weight: 500;
  margin-bottom: 2rem;
}
.themes-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.theme-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(0,86,179,0.08);
  padding: 2rem 1.5rem 1.5rem 1.5rem;
  border: 2px solid #e3f0ff;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.theme-card:hover {
  transform: translateY(-6px) scale(1.03);
  box-shadow: 0 8px 32px rgba(0,86,179,0.13);
  border-color: #b3d1ff;
}
.theme-card h3 {
  font-size: 1.18rem;
  color: #0056b3;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.theme-card i {
  font-size: 1.5rem;
  color: #ffb300;
}
.theme-desc {
  font-size: 1.01rem;
  color: #1967b5;
  margin-bottom: 0.7rem;
  font-style: italic;
}
.theme-card ul {
  padding-left: 1.2rem;
  margin: 0;
  color: #333;
  font-size: 1.01rem;
}
.timeline {
  background: none;
  box-shadow: none;
  padding: 2.5rem 0 0 0;
}
.timeline table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  background: #f7fafd;
}
.timeline th, .timeline td {
  border: 1px solid #cce0ff;
  padding: 0.75rem 0.5rem;
  text-align: left;
}
.timeline th {
  background: #e3f0ff;
  color: #1967b5;
}
.timeline tr:nth-child(even) {
  background: #f0f6ff;
}
.registration-heading {
  background: linear-gradient(90deg, #1A237E 0%, #1976D2 100%);
  color: #fff;
}
.register {
  background: linear-gradient(90deg, #232946 60%, #3a506b 100%);
  border: none;
  color: #fff;
  text-align: center;
  padding: 3rem 0;
}
.register-content {
  background: rgba(20, 24, 40, 0.92);
  border-radius: 18px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.18);
  padding: 2.5rem 2rem 2rem 2rem;
  max-width: 540px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.register h2 {
  color: #ffb300;
  font-size: 1.6rem;
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  justify-content: center;
}
.register h2 i {
  font-size: 2.1rem;
  color: #ffb300;
}
.register-sub {
  color: #e3f0ff;
  font-size: 1.13rem;
  margin-bottom: 1.2rem;
  font-weight: 500;
}
.register .btn-primary {
  background: #ffb300;
  color: #ffff;
  font-size: 1.1rem;
  margin-top: 1.2rem;
  box-shadow: 0 2px 8px rgba(255,179,0,0.10);
}
.register .btn-primary:hover {
 background: #ffb300;
  color: #2b2b2b;
}
.register p {
  color: #e3f0ff;
  margin-bottom: 0.5rem;
}
footer {
  background: linear-gradient(90deg, #1A237E 0%, #1976D2 100%);
  color: #fff;
  padding: 1.2rem 0 0.7rem 0;
  font-size: 1rem;
  text-align: center;
}
.footer-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}
.footer-links {
  margin-bottom: 0.2rem;
}
.footer-links a {
  color: #fff;
  text-decoration: underline;
  margin: 0 0.5rem;
  font-weight: 500;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: #ffb300;
}
.footer-credit {
  color: #e3f0ff;
  font-size: 0.98rem;
  margin-top: 0.2rem;
}
@media (max-width: 700px) {
  .header-flex {
    flex-wrap: wrap;
  }
  .nav-toggle {
    display: block;
  }
  .header-flex, .prizes, .footer-flex {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
  .container {
    width: 98%;
    padding: 0 0.5rem;
  }
  .hero h1 {
    font-size: 1.2rem;
  }
  section {
    padding: 1rem 0.2rem;
  }
  .timeline th, .timeline td {
    font-size: 0.95rem;
    padding: 0.5rem 0.2rem;
  }
  nav ul.nav-list {
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    right: 0;
    background: #1967b5;
    width: 180px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    border-radius: 0 0 10px 10px;
    display: none;
    z-index: 1001;
  }
  nav ul.nav-list.nav-open {
    display: flex;
  }
  nav a {
    padding: 1rem;
    border-radius: 0;
    border-bottom: 1px solid #224477;
  }
}
.why-flex {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.why-img {
  width: 300px;
  height: 230px;
  max-width: 40vw;
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.why-text {
  flex: 1;
}
@media (max-width: 900px) {
  .why-flex {
    flex-direction: column;
    gap: 1.2rem;
    text-align: center;
  }
  .why-img {
    width: 90%;
    max-width: 320px;
  }
  .who-list {
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
  }
  .who-card {
    width: 95%;
    min-width: unset;
    max-width: 98vw;
  }
  .themes-list {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  .theme-card {
    padding: 1.2rem 0.7rem 1rem 0.7rem;
  }
}
.about, .contact {
  background: none;
  box-shadow: none;
  padding: 2.5rem 0 0 0;
  text-align: left;
}
.about h2, .contact h2 {
  color: #1967b5;
  font-size: 1.3rem;
  margin-bottom: 0.7rem;
  font-weight: 700;
}
.contact-list {
  list-style: none;
  margin: 0 0 1rem 0;
  padding: 0;
  color: #222;
  font-size: 1.05rem;
}
.contact-list i {
  color: #0056b3;
  margin-right: 0.5em;
  font-size: 1.1em;
  vertical-align: middle;
}
.contact-list a {
  color: #0056b3;
  text-decoration: underline;
}
.follow-us {
  margin-top: 0.7rem;
  color: #1967b5;
  font-size: 1.02rem;
  font-weight: 500;
}
.about-contact-row {
  background: none;
  box-shadow: none;
  padding: 2.5rem 0 0 0;
}
.about-contact-flex {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  justify-content: center;
}
.about-block, .contact-block {
  flex: 1 1 320px;
  min-width: 260px;
  max-width: 480px;
}
.about-block h2, .contact-block h2 {
  color: #2b2b2b;
  font-size: 1.3rem;
  margin-bottom: 0.7rem;
  font-weight: 700;
}
@media (max-width: 900px) {
  .about-contact-flex {
    flex-direction: column;
    gap: 2rem;
  }
  .about-block, .contact-block {
    max-width: 100%;
  }
}