:root {
  /* Color Palette */
  --color-black: #0a0a0a;
  --color-charcoal: #1f1f1f;
  --color-white: #ffffff;
  --color-offwhite: #f5f5f5;
  --color-red: #8B0000; /* Deep red */
  --color-red-light: #a82020;
  --color-gold: #D4AF37; /* Gold */
  --color-gold-hover: #c49f27;
  --color-dr-blue: #002D62; /* Subtle Dominican Blue */
  --color-text-dark: #333333;
  --color-text-light: #e0e0e0;

  /* Typography */
  --font-heading: 'Cinzel', serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-dark);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  text-align: center;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 2px;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-red);
  margin: var(--spacing-sm) auto 0;
}

p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

/* Backgrounds & Textures */
.bg-dark {
  background-color: var(--color-black);
  color: var(--color-white);
}

.bg-dark h2::after {
  background-color: var(--color-gold);
}

.bg-light {
  background-color: var(--color-white);
}

.bg-texture {
  /* Subtle Japanese paper texture */
  background-image: url('data:image/svg+xml;utf8,<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>');
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-xl) 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--color-red);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-red-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 0, 0, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-white);
}

.btn-outline:hover {
  background-color: var(--color-white);
  color: var(--color-black);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: linear-gradient(180deg, rgba(5, 5, 5, 0.98) 0%, rgba(15, 15, 15, 0.92) 100%);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
  transition: var(--transition-smooth);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 85px;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  padding-right: 1.5rem;
  border-right: 1px solid rgba(212, 175, 55, 0.4);
  height: 65px;
}

.nav-logo-wrapper {
  height: 55px;
  width: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.15));
  transition: all 0.3s ease;
}

.nav-logo-wrapper:hover {
  filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.3));
}

.nav-logo {
  height: 100%;
  width: auto;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  transform: translateZ(0);
}

.hero-poster-wrapper {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 2rem auto;
  position: relative;
}

.hero-poster {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 15px 50px rgba(0,0,0,0.8), 0 0 40px rgba(212, 175, 55, 0.15);
  transition: var(--transition-smooth);
}

.hero-poster:hover {
  transform: scale(1.02);
  box-shadow: 0 20px 60px rgba(0,0,0,0.9), 0 0 50px rgba(212, 175, 55, 0.25);
}

.footer-logo {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 1.5rem auto;
  display: block;
  box-shadow: 0 5px 15px rgba(0,0,0,0.6);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
}

.nav-link {
  color: #f0f0f0;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  white-space: nowrap;
  position: relative;
  transition: all 0.3s ease;
  padding: 0.5rem 0;
}

.nav-link::before {
  content: '';
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%) scale(0);
  background-color: #fff;
  box-shadow: 0 0 10px 2px rgba(255, 255, 255, 0.8), 0 0 20px 5px rgba(212, 175, 55, 0.8);
  transition: all 0.3s ease;
  z-index: 2;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-gold);
  transition: all 0.3s ease;
  box-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

.nav-link:hover {
  color: var(--color-white);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.nav-link:hover::before {
  transform: translateX(-50%) scale(1);
}

.nav-link:hover::after {
  width: 100%;
}

.lang-switch {
  background: rgba(15, 15, 15, 0.8);
  border: 1px solid rgba(212, 175, 55, 0.6);
  color: var(--color-gold);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-switch:hover {
  background: rgba(212, 175, 55, 0.1);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.3);
  color: var(--color-white);
  border-color: var(--color-gold);
}

.navbar .btn-primary {
  background-color: var(--color-red);
  border: 1px solid rgba(180, 20, 20, 0.8);
  color: var(--color-white);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 0.6rem 1.4rem !important;
  border-radius: 6px;
  box-shadow: 0 4px 15px rgba(180, 20, 20, 0.4);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.navbar .btn-primary:hover {
  background-color: #d51515;
  box-shadow: 0 0 20px rgba(220, 30, 30, 0.6);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
  position: relative;
  background-color: var(--color-black);
  background-image: radial-gradient(circle at center, #1a1a1a 0%, #0a0a0a 100%);
}

.hero-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.org-logo-3d {
  height: 85px;
  width: auto;
  object-fit: contain;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.6));
}

.org-logo-3d:hover {
  transform: translateY(-5px) scale(1.05);
  filter: drop-shadow(0 15px 20px rgba(0, 0, 0, 0.8)) drop-shadow(0 0 15px rgba(212, 175, 55, 0.3));
}

.uasd-logo {
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.6)) !important;
}

.footer-org-logo-3d.uasd-logo {
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5)) !important;
}

.uasd-logo:hover {
  filter: drop-shadow(0 15px 20px rgba(0, 0, 0, 0.8)) drop-shadow(0 0 15px rgba(212, 175, 55, 0.3)) !important;
}

.hero-content {
  max-width: 900px;
  position: relative;
  z-index: 2;
}

.hero-intro {
  font-size: 1.2rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* About Section */
.about-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.25rem;
  line-height: 1.8;
}

/* Senseis Section */
.senseis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.sensei-card {
  background-color: var(--color-charcoal);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition-smooth);
  border: 1px solid rgba(255,255,255,0.05);
  text-align: center;
  padding-bottom: var(--spacing-md);
}

.sensei-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-gold);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.sensei-photo {
  width: 100%;
  height: 350px;
  background-color: #2a2a2a;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  border-bottom: 3px solid var(--color-red);
}

.sensei-img {
  object-fit: cover;
  background-color: #0A0A0A;
}

.sensei-info {
  padding: var(--spacing-md);
}

.sensei-name {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.sensei-rank {
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.sensei-federation {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.sensei-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* Schedule Section */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: var(--color-red);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-md);
  width: 50%;
  padding-right: 40px;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 40px;
  padding-right: 0;
  text-align: left;
}

.timeline-dot {
  position: absolute;
  top: 0;
  right: -11px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--color-gold);
  border: 4px solid var(--color-white);
  z-index: 1;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -11px;
}

.timeline-content {
  background-color: var(--color-offwhite);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  transition: var(--transition-smooth);
}

.timeline-content:hover {
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}

.timeline-date {
  color: var(--color-red);
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.timeline-list {
  list-style: none;
}

.timeline-list li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.timeline-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background-color: var(--color-gold);
  border-radius: 50%;
}

.schedule-note {
  text-align: center;
  font-style: italic;
  margin-top: var(--spacing-md);
  color: #666;
}

/* Registration Section */
.registration-box {
  background-color: var(--color-charcoal);
  padding: var(--spacing-xl) var(--spacing-md);
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(212, 175, 55, 0.2);
  max-width: 800px;
  margin: 0 auto;
}

.registration-requirements {
  text-align: left;
  max-width: 500px;
  margin: var(--spacing-md) auto;
  color: var(--color-text-light);
}

.registration-requirements li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.registration-requirements li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-gold);
}

/* Info Cards */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.info-card {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  border-bottom: 3px solid var(--color-red);
}

.info-card h3 {
  color: var(--color-red);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.info-card p {
  color: var(--color-text-dark);
  font-weight: 500;
}

/* Location / Map Section */
.map-container {
  width: 100%;
  height: 400px;
  background-color: #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--spacing-md);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.map-placeholder {
  color: #666;
  text-align: center;
  padding: 2rem;
  border: 2px dashed #ccc;
  width: 90%;
  height: 80%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.contact-item {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--color-offwhite);
  border-radius: 8px;
  transition: var(--transition-smooth);
}

.contact-item:hover {
  background-color: var(--color-red);
  color: var(--color-white);
}

.contact-item h4 {
  margin-bottom: 0.5rem;
}

/* Sponsors */
.sponsor-card {
  background: linear-gradient(145deg, rgba(25,25,25,0.9), rgba(10,10,10,0.95));
  padding: 2rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 1px solid rgba(212, 175, 55, 0.15);
  width: 280px;
  height: 200px;
}

.sponsor-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.8), 0 0 25px rgba(212, 175, 55, 0.25);
  border-color: rgba(212, 175, 55, 0.4);
}

.sponsor-logo {
  height: 80px;
  width: 100%;
  max-width: 200px;
  object-fit: contain;
  transition: all 0.3s ease;
}

.sponsor-label {
  color: var(--color-gold);
  font-size: 0.85rem;
  margin-top: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
}

/* Guide Section */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.guide-card {
  background-color: var(--color-white);
  padding: 2.5rem 1.5rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border-bottom: 4px solid transparent;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--color-red);
  transform: scaleX(0);
  transition: var(--transition-smooth);
}

.guide-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.guide-card:hover::before {
  transform: scaleX(1);
}

.guide-icon-wrapper {
  background-color: var(--color-offwhite);
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--color-red);
  transition: var(--transition-smooth);
}

.guide-card:hover .guide-icon-wrapper {
  background-color: var(--color-red);
  color: var(--color-white);
}

.guide-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-text-dark);
}

.guide-card p {
  color: var(--color-text-dark);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Feature Cards (Event Structure & Accommodation) */
.feature-card {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-radius: 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.feature-icon {
  margin-bottom: 1.5rem;
  color: var(--color-gold);
}

.dark-card {
  background-color: var(--color-charcoal);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--color-white);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.dark-card:hover {
  box-shadow: 0 15px 40px rgba(0,0,0,0.7);
  border-color: var(--color-gold);
}

.light-card {
  background-color: var(--color-white);
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.light-card:hover {
  box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.feature-card p {
  font-size: 1.2rem;
  max-width: 600px;
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 1rem;
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition-smooth);
}

.faq-item:hover {
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--color-text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  transition: transform 0.3s ease;
  color: var(--color-red);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background-color: var(--color-offwhite);
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.5rem 1.5rem;
}

/* Social Media Section */
.social-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  text-decoration: none;
  color: var(--color-text-dark);
  transition: var(--transition-smooth);
  width: 250px;
  border-bottom: 3px solid transparent;
}

.social-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  border-bottom-color: var(--color-red);
}

.social-handle {
  color: #666;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Footer */
.footer {
  background-color: var(--color-black);
  color: var(--color-text-light);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-logos {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: var(--spacing-md) 0;
  flex-wrap: wrap;
}

.footer-org-logo-3d {
  height: 55px;
  width: auto;
  object-fit: contain;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
}

.footer-org-logo-3d:hover {
  transform: translateY(-3px) scale(1.05);
  filter: drop-shadow(0 8px 15px rgba(0, 0, 0, 0.7));
}

.footer p {
  margin-bottom: 0.2rem;
  font-size: 0.9rem;
}

.copyright {
  margin-top: var(--spacing-md);
  font-size: 0.8rem;
  opacity: 0.6;
}

.developer-credit {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.75rem;
  color: var(--color-text-light);
  opacity: 0.5;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all 0.3s ease;
  cursor: default;
  display: inline-block;
}

.developer-credit:hover {
  opacity: 0.9;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

.dr-blue {
  color: #3b82f6;
  font-weight: 900;
  -webkit-text-stroke: 0.5px rgba(255, 255, 255, 0.7);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

.dr-red {
  color: #ef4444;
  font-weight: 900;
  -webkit-text-stroke: 0.5px rgba(255, 255, 255, 0.7);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

/* Video Container Styles */
.video-container-wrapper {
  max-width: 900px;
  margin: 0 auto;
  border-radius: 12px;
  padding: 4px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.4) 0%, rgba(0, 0, 0, 0) 50%, rgba(212, 175, 55, 0.1) 100%);
  box-shadow: 0 15px 40px rgba(0,0,0,0.8), 0 0 30px rgba(212, 175, 55, 0.15);
  transition: all 0.5s ease;
  animation: fadeIn 1s ease-out;
}

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

.video-container-wrapper:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.9), 0 0 40px rgba(212, 175, 55, 0.3);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  border-radius: 8px;
  overflow: hidden;
  background-color: #000;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Responsive */
/* Premium Registration Button */
.btn-premium-registration {
  background: linear-gradient(135deg, #111, #222);
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
  text-transform: uppercase;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 1rem 2.5rem;
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-premium-registration::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.2), transparent);
  transition: left 0.7s ease;
}

.btn-premium-registration:hover {
  background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
  color: #fff;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4), 0 0 15px rgba(212, 175, 55, 0.2) inset;
  border-color: #fff;
}

.btn-premium-registration:hover::before {
  left: 100%;
}

.navbar .btn-premium-registration {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.15);
}

@media (max-width: 768px) {
  .org-logo-3d {
    height: 60px;
    width: auto;
  }

  .hero-logos {
    gap: 1.5rem;
  }

  .sensei-img {
    object-fit: contain;
    background-color: #0A0A0A;
  }

  .footer-org-logo-3d {
    height: 40px;
    width: auto;
  }

  .footer-logos {
    gap: 1.5rem;
  }

  .nav-links {
    position: absolute;
    top: 85px;
    left: 0;
    width: 100%;
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.98) 0%, rgba(15, 15, 15, 0.95) 100%);
    backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    flex-direction: column;
    padding: 2rem 0;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    gap: 1.5rem;
  }

  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-menu-btn {
    display: block;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 60px !important;
    padding-right: 0 !important;
    text-align: left !important;
  }
  
  .timeline-item:nth-child(even) {
    left: 0;
  }
  
  .timeline-dot {
    left: 10px !important;
  }
}