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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: #1e293b;
  line-height: 1.6;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e40af 50%, #0f172a 100%);
  position: relative;
  overflow: hidden;
  padding: 120px 0;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 20%,
      rgba(59, 130, 246, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(147, 51, 234, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 40% 60%,
      rgba(34, 197, 94, 0.05) 0%,
      transparent 50%
    );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
  font-size: 20px;
  color: #cbd5e1;
  font-weight: 300;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease 0.3s forwards;
}

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

/* Main Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Section Styling */
.section {
  margin: 80px 0;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 36px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 12px;
  position: relative;
}

.section-subtitle {
  font-size: 18px;
  color: #64748b;
  font-weight: 300;
}

/* Diamond Sponsors - Premium Layout */
.diamond-showcase {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 24px;
  padding: 60px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.1);
  position: relative;
  overflow: hidden;
}

.diamond-showcase::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    rgb(2, 75, 124),
    rgb(51, 20, 122),
    rgb(2, 75, 124)
  );
}

.featured-sponsor {
  text-align: center;
  margin-bottom: 50px;
}

.featured-logo {
  background: #ffffff;
  padding: 40px;
  display: inline-block;
  transition: all 0.3s ease;
}

.featured-logo img {
  max-height: 400px;
  max-width: 400px;
  object-fit: contain;
}

.diamond-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.diamond-card {
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
}

.diamond-card img {
  max-height: 200px;
  max-width: 200px;
  object-fit: contain;
}

/* Tier Sections */
.tier-section {
  background: #ffffff;
  border-radius: 20px;
  padding: 50px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(148, 163, 184, 0.1);
  transition: all 0.3s ease;
}

.tier-section:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15),
    0 10px 10px -5px rgba(0, 0, 0, 0.1);
}

.tier-content {
  text-align: center;
  display: flex;
  flex-direction: column;
}

.tier-logo {
  padding: 30px;
  display: inline-block;
  transition: all 0.3s ease;
}

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

.tier-logo img {
  max-height: 400px;
  max-width: 400px;
  object-fit: contain;
}

.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 20px;
}

.sponsor-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  border: 1px solid rgba(148, 163, 184, 0.1);
  transition: all 0.3s ease;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sponsor-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  border-color: #3b82f6;
}

.sponsor-card img {
  max-height: 300px;
  max-width: 300px;
  object-fit: contain;
}

.placeholder {
  color: #94a3b8;
  font-size: 14px;
  font-weight: 500;
}

/* Tier Colors */
.platinum .section-title {
  color: #6b7280;
}

.gold .section-title {
  color: #f59e0b;
}

.silver .section-title {
  color: #6b7280;
}
/* Responsive Design for Mobile */
@media (max-width: 768px) {
 .featured-sponsor {
  margin-bottom: 25px;
}

.featured-logo {
  padding: 20px;
}

.featured-logo img {
  max-height: 150px;
  max-width: 150px;

}
.diamond-grid {
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.diamond-card {
  padding: 15px;
}

.diamond-card img {
  max-height: 100px;
  max-width: 100px;
}

.tier-section {
  padding: 25px;
}
.tier-logo {
  padding: 15px;
}

.tier-logo img {
  max-height: 170px;
  max-width: 170px;
}
.sponsors-grid {
  grid-template-columns: repeat(2, minmax(100px, 1fr));
  gap: 10px;
}

.sponsor-card {
  padding: 10px;
  min-height: 60px;
}

.sponsor-card img {
  max-height: 100px;
  max-width: 100px;
  object-fit: contain;
}
}