:root {
    --black: #0a0a0a;
    --gray: #6b7280;
    --yellow: #becd2b;
    --green: #509236;
    --blue: #0f56cb;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --dark-gray: #1f2937;
    --border: #e5e7eb;
    --glass-border: rgba(255,255,255,0.45);
    --glass-fill: rgba(255,255,255,0.15);
    --glass-highlight: rgba(255,255,255,0.5);
    --marquee-width: 90%; /* Change to 1200px, 90%, etc. for different widths */
    --marquee-height: 100px;
    --marquee-speed: 40s; /* Slower = higher number */
    --sponsor-logo-max-width: 160px;
    --sponsor-logo-max-height: 50px;
    --marquee-border-radius: 0px; /* Set to 20px for rounded, 0 for sharp edges */
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-top: 80px;
}

/* Animations */
@keyframes fadeInUp {
    from {
    opacity: 0;
    transform: translateY(30px);
    }
    to {
    opacity: 1;
    transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
    opacity: 0;
    transform: translateX(-30px);
    }
    to {
    opacity: 1;
    transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
    opacity: 0;
    transform: translateX(30px);
    }
    to {
    opacity: 1;
    transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
    opacity: 0;
    transform: scale(0.9);
    }
    to {
    opacity: 1;
    transform: scale(1);
    }
}

@keyframes liquidGlow {
    0%, 100% {
    filter: hue-rotate(0deg) brightness(1);
    }
    50% {
    filter: hue-rotate(10deg) brightness(1.1);
    }
}

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

@keyframes shimmer {
    0% {
    transform: translateX(-100%) rotate(25deg);
    }
    100% {
    transform: translateX(200%) rotate(25deg);
    }
}

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 80px;
}

.nav-logo {
  height: 52px;
  transition: transform 0.3s ease;
  animation: slideInLeft 0.8s ease;
}

.nav-logo:hover {
  transform: scale(1.05) rotate(-2deg);
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 48px;
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: var(--black);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding: 8px 0;
  border: none;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--yellow), var(--green));
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 1px;
}

.nav-link:hover {
  color: var(--green);
}

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

/* Dropdown Styles */
.nav-item-dropdown {
  position: relative;
}

.dropdown-btn {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dropdown-icon {
  transition: transform 0.3s ease;
}

.dropdown-btn[aria-expanded="true"] .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-content {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 0, 0, 0.05);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-10px);
  transition: all 0.3s ease;
  z-index: 100;
  padding: 8px 0;
}

.nav-item-dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 20px;
  color: var(--black);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background: #f8fafc;
  color: var(--blue);
}

/* Register Button */
.register-btn {
  background: linear-gradient(135deg, var(--green), var(--yellow)) !important;
  color: white !important;
  padding: 12px 28px !important;
  border-radius: 50px !important;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.01em;
  box-shadow: 0 4px 16px rgba(80, 146, 54, 0.3);
  border: none;
  position: relative;
  overflow: hidden;
}

.register-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.register-btn:hover::before {
  width: 300px;
  height: 300px;
}

.register-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(80, 146, 54, 0.4);
}

.register-btn::after {
  display: none;
}

/* Mobile Toggle Button */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--black);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

/* Mobile Menu Overlay */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile Styles */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 20px;
  }
  
  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    right: 0;
    bottom: 0;
    width: 300px;
    max-width: 85vw;
    background: white;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 24px 0;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
  }

  .nav-menu.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
    justify-content: space-between;
    border-bottom: 1px solid #f1f5f9;
  }
  
  .nav-link::after {
    display: none;
  }

  .register-btn {
    margin: 16px 24px 0 24px !important;
    text-align: center !important;
    justify-content: center !important;
    padding: 16px 24px !important;
  }

  /* Mobile Dropdown Styles */
  .nav-item-dropdown {
    width: 100%;
  }

  .dropdown-content {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: #f8fafc;
    margin: 0;
    border-radius: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0;
  }

  .dropdown-btn[aria-expanded="true"] + .dropdown-content {
    max-height: 300px;
    padding: 8px 0;
  }

  .dropdown-item {
    padding: 12px 48px;
    font-size: 15px;
    border-bottom: 1px solid #e2e8f0;
  }
  
  .dropdown-item:last-child {
    border-bottom: none;
  }

  .dropdown-item:hover {
    background: white;
  }

  /* Disable desktop hover effects on mobile */
  .nav-item-dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    padding: 0;
  }
  
  .dropdown-btn[aria-expanded="true"]:hover + .dropdown-content {
    max-height: 300px;
    padding: 8px 0;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    width: 280px;
  }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, 
    rgba(248, 250, 252, 0.9) 0%, 
    rgba(255, 255, 255, 1) 30%, 
    rgba(243, 244, 246, 0.8) 100%
    );
    overflow: hidden;
}

.hero-content {
    text-align: center;
    padding: 140px 32px 80px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* True Liquid Glass Countdown */
.countdown-wrap {
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease;
}

.countdown {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 24px;
    padding: 24px 40px;
    border-radius: 100px;
    
    /* Liquid glass effect */
    background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.25) 0%,
    rgba(255, 255, 255, 0.15) 50%,
    rgba(190, 205, 43, 0.1) 100%
    );
    backdrop-filter: blur(20px) saturate(1.8);
    -webkit-backdrop-filter: blur(20px) saturate(1.8);
    
    /* Multi-layer border effect */
    box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 0.6),
    inset 0 -2px 8px rgba(0, 0, 0, 0.05),
    0 20px 40px rgba(15, 86, 203, 0.15),
    0 8px 32px rgba(190, 205, 43, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.08);
    
    border: 1px solid rgba(255, 255, 255, 0.4);
    animation: liquidGlow 4s ease-in-out infinite;
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    position: relative;
    z-index: 1;
}

.countdown-num {
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--blue), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.countdown-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray);
    font-weight: 600;
    margin-top: 4px;
}

.logo-conference {
    max-width: 580px;
    width: 100%;
    height: auto;
    margin-bottom: 40px;
    filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.15));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: scaleIn 0.8s ease 0.2s both;
}

.logo-conference:hover {
    transform: scale(1.02) translateY(-3px);
    filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.2));
}

.hero h1 {
    display: none; /* Hidden since logo contains all info */
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero .blue {
    background: linear-gradient(135deg, var(--blue), #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .green {
    background: linear-gradient(135deg, var(--green), #66a347);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .yellow {
    background: linear-gradient(135deg, var(--yellow), #d4e02e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 40px;
    font-weight: 500;
    letter-spacing: -0.01em;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.01em;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    min-height: 52px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--yellow), var(--green));
    color: white;
    box-shadow: 0 4px 16px rgba(190, 205, 43, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(190, 205, 43, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--blue), #2563eb);
    color: white;
    box-shadow: 0 4px 16px rgba(15, 86, 203, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(15, 86, 203, 0.4);
}

/* Full-Width Sponsor Showcase */
.sponsor-showcase {
    position: relative;
    width: 100vw;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    background: transparent;  /* Remove the gradient background */
    padding: 48px 0;
    animation: fadeInUp 0.8s ease 1.2s both;
}

.sponsor-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.9) 0%, 
    rgba(248, 250, 252, 0.95) 100%
    );
    backdrop-filter: blur(15px);
    border: 1px solid rgba(190, 205, 43, 0.2);
    border-radius: 50px;
    margin: 0 auto 32px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.sponsor-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(190, 205, 43, 0.15);
    border-color: rgba(190, 205, 43, 0.3);
}

.sponsor-badge span {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--green), var(--yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sponsor-marquee-container {
    width: var(--marquee-width);
    margin: 0 auto;
    position: relative;
}

.sponsor-marquee {
    position: relative;
    width: 100%;
    height: var(--marquee-height);
    overflow: hidden;
    background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.9) 0%,
    rgba(252, 252, 253, 0.95) 100%
    );
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid rgba(190, 205, 43, 0.15);
    box-shadow:
            0 12px 32px rgba(0, 0, 0, 0.08),
            inset 0 1px 2px rgba(255, 255, 255, 0.8);
}

/* Fade edges for marquee */
.sponsor-marquee::before,
.sponsor-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    width: 120px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.sponsor-marquee::before {
    left: 0;
    background: linear-gradient(to right, 
    rgba(255, 255, 255, 0.95), 
    rgba(255, 255, 255, 0.1)
    );
}

.sponsor-marquee::after {
    right: 0;
    background: linear-gradient(to left, 
    rgba(255, 255, 255, 0.95), 
    rgba(255, 255, 255, 0.1)
    );
}

.sponsor-track {
    display: flex;
    align-items: center;
    height: 100%;
    animation: sponsorScroll var(--marquee-speed) linear infinite;
    gap: 0;
}

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

.sponsor-item {
    flex-shrink: 0;
    width: 220px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 30px;
}

.sponsor-logo {
    max-width: var(--sponsor-logo-max-width);
    max-height: var(--sponsor-logo-max-height);
    object-fit: contain;
    filter: saturate(1.1) opacity(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.sponsor-item:hover .sponsor-logo {
    filter: saturate(1.2) opacity(1);
    transform: scale(1.05);
}

/* Scroll indicator */
.scroll-indicator{
    position: fixed;
    bottom: calc(32px + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    width: 32px; height: 48px;
    border: 2px solid var(--gray);
    border-radius: 16px;
    opacity: .85;
    z-index: 20;
    pointer-events: none;           /* it's just a hint; not clickable */
    transition: opacity .25s ease, transform .25s ease;
    animation: scrollHint 1.8s ease-in-out infinite;
}
.scroll-indicator.hidden{
    opacity: 0;
    transform: translateX(-50%) translateY(6px);
    visibility: hidden;
}

/* simple bounce */
@keyframes scrollHint{
    0%,100%{ transform: translateX(-50%) translateY(0); }
    50%    { transform: translateX(-50%) translateY(8px); }
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 10px;
    background: var(--gray);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 20% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(12px); opacity: 0.5; }
    80%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
}

.scroll-indicator:hover {
    opacity: 1;
    border-color: var(--green);
}

/* Sections */
.section {
    padding: 120px 0;
    position: relative;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
    animation: fadeInUp 0.8s ease;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--black);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--gray);
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.6;
}

.gradient-text {
    background: linear-gradient(135deg, var(--yellow), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Event Info Section */
.event-info {
    background: var(--light-gray);
    position: relative;
    overflow: hidden;
}

.event-info::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(190, 205, 43, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    position: relative;
    z-index: 1;
}

.info-card {
    background: white;
    padding: 40px 32px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--yellow), var(--green));
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

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

.info-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    opacity: 0.8;
}

.info-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.info-card p {
    color: var(--gray);
    line-height: 1.7;
    font-size: 15px;
}

/* === Keynote & Speakers (modern) === */
.keynote{
    background: var(--light-gray);
    position: relative;
    overflow: hidden;
}
.keynote-grid{
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
    align-items: center;
}

/* Keynote text */
.keynote-badge{
    display:inline-flex; align-items:center; gap:10px;
    padding:10px 16px; border-radius:999px;
    font-weight:800; font-size:.85rem; letter-spacing:.04em;
    background:rgba(15,86,203,.08); color:var(--blue);
    border:1px solid rgba(15,86,203,.2);
}
.keynote-title{
    font-size:clamp(2rem,4.5vw,3rem);
    font-weight:900; letter-spacing:-.02em; margin:12px 0 8px;
}
.keynote-lead{
    color:var(--gray); font-size:1.1rem; line-height:1.8; margin-bottom:16px;
}
.keynote-highlights{ display:grid; gap:10px; margin:10px 0 18px; }
.keynote-highlights li{
    list-style:none; color:var(--gray); padding-left:26px; position:relative;
}
.keynote-highlights li::before{
    content:"✓"; position:absolute; left:0; top:0; color:var(--green); font-weight:900;
}
.keynote-cta{ display:flex; gap:12px; flex-wrap:wrap; margin-top:6px; }

/* Keynote image */
.keynote-photo-wrap{
    position:relative; width:100%; max-width:520px; margin-inline:auto;
    aspect-ratio:1; border-radius:32px;
    background:
    radial-gradient(70% 70% at 75% 25%, rgba(190,205,43,.28), transparent 60%),
    radial-gradient(70% 70% at 25% 75%, rgba(15,86,203,.22), transparent 60%),
    #fff;
    box-shadow:0 24px 64px rgba(0,0,0,.10); overflow:hidden;
}
.keynote-photo-wrap::after{
    content:""; position:absolute; inset:0;
    background:linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,0));
    pointer-events:none;
}
.keynote-photo{ width:100%; height:100%; object-fit:contain; padding:24px;
    filter:saturate(1.05) contrast(1.03); }

/* ==== Featured Speakers ==== */
#speakers{ background:#fff; }

/* Chips rail */
.speaker-toolbar{
    display:flex; gap:10px; align-items:center;
    /* desktop/tablet default: wrap + center */
    flex-wrap:wrap; justify-content:center;
    margin:-8px 0 24px;
}
.speaker-toolbar .chip{
    padding:8px 14px; border-radius:999px;
    border:1px solid var(--border); background:#fff;
    font-weight:700; font-size:.9rem; color:var(--gray);
}

/* Cards */
.speaker-grid{
    display:grid; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr)); gap:24px;
}
.speaker-card{
    background:#fff; border:1px solid rgba(0,0,0,.05); border-radius:18px; padding:18px;
    box-shadow:0 8px 24px rgba(0,0,0,.06);
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.speaker-card:hover{ transform:translateY(-6px); box-shadow:0 16px 40px rgba(0,0,0,.12); border-color:var(--yellow); }
.speaker-media{ position:relative; border-radius:14px; overflow:hidden; aspect-ratio:4/3; background:var(--light-gray); }
.speaker-photo{ width:100%; height:100%; object-fit:contain; background:#fff; }
.soon-pill{
    position:absolute; top:10px; left:10px; padding:6px 10px; border-radius:999px;
    background:rgba(190,205,43,.15); color:var(--green);
    font-weight:800; font-size:.7rem; letter-spacing:.06em; border:1px solid rgba(190,205,43,.35);
}
.speaker-name{ font-weight:900; font-size:1.05rem; margin:12px 0 4px; letter-spacing:-.01em; }
.speaker-meta{ color:var(--gray); font-size:.92rem; margin-bottom:10px; }
.tag-row{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:8px; }
.tag{ display:inline-block; padding:6px 10px; border-radius:999px; font-weight:700; font-size:.72rem; letter-spacing:.04em; color:#fff; }
.tag--green{ background:linear-gradient(135deg, var(--green), #66a347); }
.tag--blue{  background:linear-gradient(135deg, var(--blue), #2563eb); }
.tag--yellow{ background:linear-gradient(135deg, var(--yellow), #d4e02e); color:#0a0a0a; }
.speaker-blurb{ color:var(--gray); font-size:.95rem; line-height:1.6; }

/* Schedule Section */
.schedule {
    background: white;
    position: relative;
}

.schedule__wrap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.schedule__title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--black);
    margin-bottom: 40px;
    text-align: center;
    animation: fadeInUp 0.8s ease;
}

.schedule__audiences {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.pill {
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
    transition: transform 0.3s ease;
}

.pill:hover {
    transform: translateY(-2px) scale(1.05);
}

.pill--cyan {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.pill--purple {
    background: linear-gradient(135deg, #9333ea, #7c3aed);
}

.pill--orange {
    background: linear-gradient(135deg, #fb923c, #f97316);
}

.pill--red {
    background: linear-gradient(135deg, #f87171, #ef4444);
}

.schedule__tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.tab {
    padding: 16px 28px;
    background: white;
    border: 2px solid var(--border);
    border-radius: 16px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--gray);
}

.tab:hover {
    border-color: var(--yellow);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.tab.is-active {
    background: linear-gradient(135deg, var(--yellow), var(--green));
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(190, 205, 43, 0.3);
}

.schedule__panel {
    display: none;
    max-width: 1000px;
    margin: 0 auto;
}

.schedule__panel.is-active {
    display: block;
    animation: fadeIn 0.4s ease;
}

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

.schedule__grid {
    display: grid;
    gap: 20px;
}

.schedule__grid > div {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 32px;
    padding: 24px;
    background: var(--light-gray);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.schedule__grid > div:hover {
    background: white;
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--yellow);
}

.time {
    font-weight: 700;
    color: var(--blue);
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}

.block strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--black);
}

.block--welcome,
.block--member {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--yellow), var(--green));
    color: white;
    border-radius: 12px;
}

.block--reg {
    padding: 12px 20px;
    background: rgba(15, 86, 203, 0.1);
    color: var(--blue);
    border-radius: 12px;
    font-weight: 700;
}

.block--meal {
    padding: 12px 20px;
    background: rgba(190, 205, 43, 0.12);
    color: var(--green);
    border-radius: 12px;
}

.block--concurrent {
    padding: 12px 20px;
    background: rgba(80, 146, 54, 0.12);
    color: var(--green);
    border-radius: 12px;
}

.block--exhibit {
    padding: 12px 20px;
    background: linear-gradient(135deg, #fb923c, #f97316);
    color: white;
    border-radius: 12px;
}

.block--dinner,
.block--social {
    padding: 12px 20px;
    background: linear-gradient(135deg, #9333ea, #7c3aed);
    color: white;
    border-radius: 12px;
}

.block--demo {
    padding: 12px 20px;
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: white;
    border-radius: 12px;
}

.block--awards {
    padding: 12px 20px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
    border-radius: 12px;
}

.muted {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    margin-top: 6px;
}

.schedule__link {
    color: inherit;
    text-decoration: underline;
    transition: opacity 0.3s;
}

.schedule__link:hover {
    opacity: 0.8;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content {
    animation: slideInLeft 0.8s ease;
}

.about-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.about-content p {
    color: var(--gray);
    margin-bottom: 24px;
    font-size: 16px;
    line-height: 1.8;
}

.about-image {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 64px rgba(0, 0, 0, 0.12);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: slideInRight 0.8s ease;
}

.about-image:hover {
    transform: scale(1.02) rotate(1deg);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-image:hover img {
    transform: scale(1.05);
}

/* Sponsorship Section */
.sponsorship {
    background: linear-gradient(135deg, var(--dark-gray) 0%, var(--black) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.sponsorship::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
    radial-gradient(circle at 20% 80%, rgba(190, 205, 43, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(15, 86, 203, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.sponsorship .section-title {
    color: white;
}

.sponsorship .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.sponsorship-image {
    max-width: 1100px;
    width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
    margin: 0 auto 48px;
    display: block;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: scaleIn 0.8s ease;
}

.sponsorship-image:hover {
    transform: scale(1.02);
}

/* Contact Section */
.contact {
    background: var(--light-gray);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(15, 86, 203, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 18s ease-in-out infinite reverse;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.contact-info {
    animation: slideInLeft 0.8s ease;
}

.contact-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 32px;
    letter-spacing: -0.01em;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    padding: 16px;
    background: white;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.contact-item:hover {
    transform: translateX(8px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--yellow);
}

.contact-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--yellow), var(--green));
    border-radius: 6px;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-form {
    background: white;
    padding: 48px;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.04);
    animation: slideInRight 0.8s ease;
}

.form-group {
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--black);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: -0.01em;
}

.form-input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-family: inherit;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--yellow);
    box-shadow: 0 0 0 4px rgba(190, 205, 43, 0.1);
    transform: translateY(-2px);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

#form-status {
    margin-top: 16px;
    font-size: 0.95rem;
    color: var(--gray);
    text-align: center;
}

/* Footer */
.footer {
    background: var(--black);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--yellow), var(--green), var(--blue));
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    color: var(--yellow);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    display: block;
    margin-bottom: 12px;
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 4px 0;
}

.footer-link:hover {
    color: var(--yellow);
    transform: translateX(4px);
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* Hotel Section Styles */
.hotel-grid {
    position: relative;
}

.hotel-info, .booking-instructions {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hotel-info:hover, .booking-instructions:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.booking-steps > div {
    transition: transform 0.2s ease;
}

.booking-steps > div:hover {
    transform: translateX(4px);
}

/* Sponsor Card Hover Effects */
.platinum-sponsor:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 28px 70px rgba(255, 215, 0, 0.2);
}

.gold-sponsor:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: 0 24px 60px rgba(255, 215, 0, 0.15);
}

.silver-sponsor:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 20px 50px rgba(192, 192, 192, 0.12);
}

.bronze-sponsor:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: 0 16px 40px rgba(205, 127, 50, 0.15);
    border-color: rgba(205, 127, 50, 0.25);
}

.networking-sponsor:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 86, 203, 0.08);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
    --marquee-speed: 35s;
    --sponsor-logo-max-width: 140px;
    --sponsor-logo-max-height: 45px;
    }

    .sponsor-item {
    width: 200px;
    padding: 0 25px;
    }

    .keynote-grid {
    grid-template-columns: 1fr;
    text-align: center;
    }

    .keynote-photo-wrap {
    max-width: 440px;
    }
}

@media (max-width: 768px) {
    :root {
    --marquee-height: 80px;
    --marquee-speed: 30s;
    --sponsor-logo-max-width: 120px;
    --sponsor-logo-max-height: 40px;
    }

    .hero-content {
    padding: 120px 20px 60px;
    }

    .sponsor-showcase {
    padding: 32px 0;
    }

    .sponsor-item {
    width: 160px;
    height: 60px;
    padding: 0 20px;
    }

    .sponsor-marquee::before,
    .sponsor-marquee::after {
    width: 80px;
    }

    .countdown {
    gap: 16px;
    padding: 20px 28px;
    }

    .countdown-num {
    font-size: 2rem;
    }

    .countdown-unit {
    min-width: 60px;
    }

    .hero-buttons {
    flex-direction: column;
    align-items: center;
    }

    .btn {
    width: 100%;
    max-width: 320px;
    }

    .form-row {
    grid-template-columns: 1fr;
    }

    .speaker-grid {
    grid-template-columns: 1fr;
    }

    .about-grid,
    .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    }

    .schedule__grid > div {
    grid-template-columns: 1fr;
    gap: 16px;
    }

    .time {
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    }

    .hotel-grid {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
    }
    
    .hotel-info, .booking-instructions {
    padding: 32px 24px !important;
    }

    .sponsors-showcase {
    padding: 32px 24px !important;
    border-radius: 24px !important;
    }
    
    .sponsors-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    }
    
    .sponsor-card {
    padding: 24px 20px !important;
    }
}

@media (max-width: 640px) {
    .scroll-indicator { display: none; }

    .nav-container,
    .container,
    .schedule__wrap {
    padding: 0 20px;
    }

    .section {
    padding: 80px 0;
    }

    .section-header {
    margin-bottom: 48px;
    }

    .logo-conference {
    max-width: 320px;
    }

    .hero h1 {
    font-size: 2rem;
    }

    .section-title {
    font-size: 2rem;
    }

    .info-card,
    .contact-form {
    padding: 32px 24px;
    }

    .countdown {
    gap: 12px;
    padding: 16px 20px;
    }

    .countdown-num {
    font-size: 1.5rem;
    }

    .countdown-unit {
    min-width: 50px;
    }

    .countdown-label {
    font-size: 0.65rem;
    }

    .tab {
    padding: 12px 20px;
    font-size: 14px;
    }
}

@media (max-width: 600px){
    .keynote-grid{ gap:32px; }
    .keynote-title{ font-size:1.6rem; }
    .keynote-lead{ font-size:1rem; line-height:1.6; }
    .keynote-photo-wrap{ max-width:320px; border-radius:20px; }
    .keynote-cta{ flex-direction:column; align-items:stretch; }
    .speaker-grid{ grid-template-columns:1fr; gap:20px; }

    /* chips rail becomes horizontal scroll */
    .speaker-toolbar{
    flex-wrap:nowrap; justify-content:flex-start;
    overflow-x:auto; overflow-y:hidden; white-space:nowrap;
    -webkit-overflow-scrolling:touch;
    padding:8px 4px 10px;
    scrollbar-width:none;           /* Firefox */
    }
    .speaker-toolbar::-webkit-scrollbar{ display:none; } /* WebKit */
}

@media (max-width: 480px) {
    :root {
    --marquee-height: 70px;
    --marquee-speed: 25s;
    --sponsor-logo-max-width: 100px;
    --sponsor-logo-max-height: 35px;
    }

    .sponsor-item {
    width: 140px;
    padding: 0 15px;
    }

    .keynote-photo-wrap{ aspect-ratio:auto; }
    .keynote-photo{ padding:16px; }

    .hotel-info, .booking-instructions {
    padding: 24px 20px !important;
    }
    
    .booking-steps > div {
    flex-direction: column !important;
    gap: 8px !important;
    text-align: center;
    }
    
    .booking-steps > div > div:first-child {
    align-self: center;
    }

    .sponsors-showcase {
    padding: 24px 16px !important;
    }
    
    .sponsor-card {
    padding: 20px 16px !important;
    }
}

/* Animations for scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Loading state */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print styles */
@media print {
    .navbar,
    .hero-buttons,
    .scroll-indicator,
    .contact-form,
    .footer {
    display: none;
    }

    body {
    font-size: 12pt;
    }

    .section {
    page-break-inside: avoid;
    }
}

/* Fallback that works everywhere */
::selection { background: #a8c628; color: #000; }
::-moz-selection { background: #a8c628; color: #000; }

/* Progressive enhancement for modern browsers */
@supports (background: color-mix(in oklab, red, blue)) {
    ::selection {
    background: color-mix(in oklab, var(--yellow) 55%, var(--green) 45%);
    color: #0a0a0a; /* black text for contrast */
    }
    ::-moz-selection {
    background: color-mix(in oklab, var(--yellow) 55%, var(--green) 45%);
    color: #0a0a0a; /* black text for contrast */
    }
}
/* DIRECT MOBILE MENU FIX - Add this to the very end of your CSS file */

@media (max-width: 768px) {
  .nav-menu {
    position: fixed !important;
    top: 80px !important;
    right: 0 !important;
    left: 0 !important;
    height: calc(100vh - 80px) !important; /* Fixed height calculation */
    width: 100vw !important;
    max-width: none !important;
    background: white !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0 !important;
    padding: 24px !important;
    transform: translateX(100%) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    overflow-y: auto !important;
    box-shadow: none !important;
    z-index: 1000 !important;
    display: flex !important;
  }

  .nav-menu.active {
    transform: translateX(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  .nav-menu li {
    width: 100% !important;
    flex-shrink: 0 !important;
  }

  .nav-link {
    width: 100% !important;
    padding: 16px 0 !important;
    font-size: 17px !important;
    justify-content: space-between !important;
    border-bottom: 1px solid #f1f5f9 !important;
    font-weight: 600 !important;
    display: flex !important;
  }
  
  .nav-link::after {
    display: none !important;
  }

  .register-btn {
    margin: 20px 0 0 0 !important;
    text-align: center !important;
    justify-content: center !important;
    padding: 16px 28px !important;
    font-size: 16px !important;
    border-radius: 12px !important;
    flex-shrink: 0 !important;
  }

  /* Mobile Dropdown Styles */
  .dropdown-content {
    position: static !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
    background: #f8fafc !important;
    margin: 8px 0 0 0 !important;
    border-radius: 8px !important;
    max-height: 0 !important;
    overflow: hidden !important;
    transition: max-height 0.3s ease !important;
    padding: 0 !important;
  }

  .dropdown-btn[aria-expanded="true"] + .dropdown-content {
    max-height: 300px !important;
    padding: 8px 0 !important;
  }

  .dropdown-item {
    padding: 12px 20px !important;
    font-size: 15px !important;
    border-bottom: 1px solid #e2e8f0 !important;
    font-weight: 500 !important;
  }

  .dropdown-item:last-child {
    border-bottom: none !important;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    padding: 20px !important;
  }
  
  .nav-link {
    padding: 15px 0 !important;
    font-size: 16px !important;
  }
  
  .register-btn {
    padding: 14px 24px !important;
    font-size: 15px !important;
  }
}
/* Sponsor Card Base Styles */
.sponsor-card {
    padding: 28px 24px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.sponsor-card.available {
    opacity: 0.4;
}

.sponsor-card .tier-indicator {
    position: absolute;
    top: 12px;
    right: 12px;
    border-radius: 999px;
    font-weight: 800;
}

.sponsor-card .logo-container {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.sponsor-card .logo-container img {
    max-width: 100%;
    max-height: 65px;
    object-fit: contain;
}

.sponsor-card h5 {
    font-weight: 700;
    color: var(--black);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.sponsor-card .available-slot {
    width: 100%;
    height: 65px;
    background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #d1d5db;
}

.sponsor-card .available-slot span {
    color: #9ca3af;
    font-size: 0.8rem;
    font-weight: 600;
}

.sponsor-card .available-text {
    color: #9ca3af;
}

.sponsor-card .available-desc {
    color: #9ca3af;
    font-size: 0.75rem;
    font-style: italic;
}

/* Platinum Sponsor */
.sponsor-card.platinum-sponsor {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 215, 0, 0.08) 100%);
    backdrop-filter: blur(20px) saturate(1.8);
    -webkit-backdrop-filter: blur(20px) saturate(1.8);
    padding: 40px 32px;
    border-radius: 24px;
    border: 2px solid rgba(255, 215, 0, 0.3);
    box-shadow: 0 20px 60px rgba(255, 215, 0, 0.15);
}

.platinum-indicator {
    top: 16px;
    right: 16px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: #b45309;
}

.platinum-logo {
    height: 100px;
    margin-bottom: 24px;
}

.platinum-logo img {
    max-height: 80px;
}

.platinum-sponsor h5 {
    font-weight: 800;
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.platinum-sponsor .available-slot {
    height: 80px;
}

.platinum-sponsor .available-desc {
    font-size: 0.85rem;
}

/* Gold Sponsor */
.sponsor-card.gold-sponsor {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 215, 0, 0.05) 100%);
    backdrop-filter: blur(20px);
    padding: 36px 28px;
    border-radius: 20px;
    border: 2px solid rgba(255, 215, 0, 0.2);
    box-shadow: 0 16px 50px rgba(255, 215, 0, 0.1);
}

.gold-indicator {
    top: 14px;
    right: 14px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    box-shadow: 0 3px 10px rgba(255, 215, 0, 0.2);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    color: #b45309;
}

.gold-logo {
    height: 90px;
    margin-bottom: 20px;
}

.gold-logo img {
    max-height: 70px;
}

.gold-sponsor h5 {
    font-size: 1rem;
    margin-bottom: 12px;
}

.gold-sponsor .available-slot {
    height: 70px;
}

.gold-sponsor .available-desc {
    font-size: 0.8rem;
}

/* Silver Sponsor */
.sponsor-card.silver-sponsor {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(192, 192, 192, 0.05) 100%);
    backdrop-filter: blur(20px);
    padding: 32px 24px;
    border-radius: 18px;
    border: 2px solid rgba(192, 192, 192, 0.2);
    box-shadow: 0 14px 40px rgba(192, 192, 192, 0.08);
}

.silver-indicator {
    padding: 5px 12px;
    background: linear-gradient(135deg, #c0c0c0, #e5e7eb);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: #4b5563;
}

.silver-sponsor h5 {
    margin-bottom: 10px;
}

/* Bronze Sponsor */
.sponsor-card.bronze-sponsor {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(205, 127, 50, 0.04) 100%);
    backdrop-filter: blur(16px);
    border: 2px solid rgba(205, 127, 50, 0.15);
    box-shadow: 0 12px 32px rgba(205, 127, 50, 0.08);
}

.bronze-indicator {
    padding: 5px 12px;
    background: linear-gradient(135deg, #cd7f32, #d2691e);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: #ffffff;
}

/* Networking Sponsor */
.sponsor-card.networking-sponsor {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(15, 86, 203, 0.03) 100%);
    backdrop-filter: blur(15px);
    padding: 24px 20px;
    border-radius: 14px;
    border: 1px solid rgba(15, 86, 203, 0.15);
    box-shadow: 0 8px 24px rgba(15, 86, 203, 0.06);
}

.networking-indicator {
    top: 10px;
    right: 10px;
    padding: 4px 10px;
    background: linear-gradient(135deg, #0f56cb, #3b82f6);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #ffffff;
}

.networking-logo {
    height: 70px;
    margin-bottom: 16px;
}

.networking-logo img {
    max-height: 55px;
}

.networking-sponsor h5 {
    font-weight: 600;
    font-size: 0.85rem;
}

.networking-sponsor .available-slot {
    height: 55px;
}

.networking-sponsor .available-desc {
    font-size: 0.7rem;
}