:root {
  --primary-blue: #3d7ba0;
  --primary-blue-glow: rgba(0, 163, 224, 0.15);
  
  --bg-page: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-card: #ffffff;
  --bg-nav: rgba(255, 255, 255, 0.9);
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  
  --border-color: #e2e8f0;
  --border-highlight: #00a3e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.06);
  
  --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --title-font: 'Bungee', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container-max: 1180px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background: var(--primary-blue);
  color: #ffffff;
  text-shadow: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Header & Navbar */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.header-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-blue);
  border-radius: 2px;
}

.nav-cta {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--primary-blue);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px var(--primary-blue-glow);
}

.nav-cta:hover {
  background: #008cc2;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}

.mobile-toggle span {
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
}

/* Hero section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 0 50px;
  overflow: hidden;
  background-color: var(--bg-subtle);
}

.hero-video-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

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

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.7) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: left;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-family: var(--title-font);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: #ffffff;
}

.hero-title .highlight {
  color: var(--primary-blue);
}

.hero-description {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 2rem 0;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: left;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  background: var(--primary-blue);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px var(--primary-blue-glow);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: #008cc2;
}

.btn-secondary {
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  transform: translateY(-1px);
  border-color: #cbd5e1;
}

.section {
  padding: 55px 0;
  position: relative;
}

.section-subtitle {
  color: var(--primary-blue);
  font-family: var(--font-family);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
  display: block;
}

.section-header, .news-page-header h1 {
  margin-bottom: 2rem;
  font-family: var(--title-font);
}

.section-header p, .section-header a {
  font-family: var(--font-family);
}

.section-title-wrap {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 0.9rem;
  transition: gap var(--transition-fast);
}

.section-link:hover {
  gap: 10px;
}

/* Horizontal achievements scroll section */
.achievements-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.achievements-arrow-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.achievements-arrow-btn:hover {
  border-color: var(--border-highlight);
  color: var(--primary-blue);
  background: var(--bg-subtle);
}

.achievements-arrow-btn:active {
  transform: scale(0.94);
}

.achievements-track {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0.5rem 0.25rem 1.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-blue) transparent;
}

.achievements-track::-webkit-scrollbar {
  height: 6px;
}

.achievements-track::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 10px;
}

.achievements-track::-webkit-scrollbar-thumb {
  background: var(--primary-blue);
  border-radius: 10px;
}

.achievement-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.achievement-icon {
  width: 40px;
  height: 40px;
  color: var(--primary-blue);
  margin-bottom: 0.75rem;
}

.achievement-year {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.achievement-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-main);
  line-height: 1.3;
}

.achievement-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* About / Academy section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.about-content {
  display: flex;
  flex-direction: column;
}

.about-content .section-title {
  font-family: var(--title-font);
  margin-bottom: 1.25rem;
}

.about-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.about-image-wrap {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  aspect-ratio: 3 / 2;
}

.about-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

/* News section Cards */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.news-card:hover {
  transform: translateY(-4px);
}

.news-card-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  background-color: #f1f5f9;
}

.news-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.news-card-category {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-color);
  color: var(--primary-blue);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.news-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.news-card-date {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.news-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
  line-height: 1.35;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
  display: -webkit-box;
  line-clamp: 3;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.news-card-readmore {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-blue);
}

/* Modal Article Popup */
.modal-dialog {
  border: none;
  background: transparent;
  padding: 1rem;
  max-width: 680px;
  width: 100%;
  margin: auto;
}

.modal-dialog::backdrop {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-content {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  position: relative;
  color: var(--text-main);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header-img {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  background-color: #f1f5f9;
}

.modal-close-btn {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close-btn:hover {
  background: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.modal-tag {
  background: rgba(0, 163, 224, 0.1);
  color: var(--primary-blue);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
}

.modal-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.modal-title {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.modal-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  white-space: pre-line;
}

.modal-text p {
  margin-bottom: 1rem;
}

.modal-text p:last-child {
  margin-bottom: 0;
}

.modal-text a {
  color: var(--primary-blue);
  text-decoration: underline;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.modal-text a:hover {
  color: #008cc2;
}

.modal-text img,
.modal-text video {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 1rem 0;
  display: block;
  box-shadow: var(--shadow-sm);
}

.modal-text ul,
.modal-text ol {
  margin: 0.75rem 0 1rem 1.5rem;
}

.modal-text li {
  margin-bottom: 0.25rem;
}

/* Sponsors Grid */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.25rem;
}

.sponsor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-sm);
}

.sponsor-card:hover {
  transform: translateY(-2px);
}

.sponsor-card img {
  max-width: 100%;
  max-height: 70px;
  object-fit: contain;
}

.sponsor-card.main-partner {
  grid-column: span 2;
  border-color: rgba(0, 163, 224, 0.3);
  background: var(--bg-subtle);
}

@media (max-width: 640px) {
  .sponsor-card.main-partner {
    grid-column: span 1;
  }
}

/* Footer */
.footer {
  background: var(--bg-page);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0 1.5rem;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.footer-logo-img {
  height: 48px;
  width: auto;
}

.footer-info {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-icons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.social-icon:hover {
  background: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

.social-icon svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* News page styles */
.news-page-header {
  padding: 110px 0 35px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
}

.search-wrapper {
  max-width: 440px;
  margin-top: 1.25rem;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1.25rem 0.75rem 2.6rem;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-toggle {
    display: flex;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}