/* Base Variables */
:root {
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;
  
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #06b6d4;
  --accent-color: #fbbf24;
  --text-dark: #0f172a;
  --text-light: #f8fafc;
  --text-muted: #94a2b8;
  --bg-color: #ffffff;
  --bg-alt: #f1f5f9;
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-dark-bg: rgba(15, 23, 42, 0.85);
  --glass-dark-border: rgba(255, 255, 255, 0.1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-dark);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease-in-out;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* Typography Utilities */
.font-sans { font-family: var(--font-sans); }
.font-outfit { font-family: var(--font-display); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.text-white { color: var(--text-light); }
.text-gray-300 { color: #cbd5e1; }
.text-gray-400 { color: #94a2b8; }
.text-gray-500 { color: #64748b; }
.text-gray-600 { color: #475569; }
.text-accent { color: var(--accent-color); }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

.tracking-wider { letter-spacing: 0.05em; }
.uppercase { text-transform: uppercase; }

/* Gradient Text */
.text-gradient {
  background: linear-gradient(135deg, #fff 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Spacing & Layout */
.w-100 { width: 100%; }
.h-100 { height: 100%; }
.min-h-screen { min-height: 100vh; }
.max-w-fit { max-width: fit-content; }
.max-w-3xl { max-width: 48rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mb-24 { margin-bottom: 6rem; }
.mb-32 { margin-bottom: 8rem; }
.ml-4 { margin-left: 1rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-20 { padding: 5rem 0; }
.py-32 { padding: 8rem 0; }
.py-48 { padding: 12rem 0; }
.py-64 { padding: 16rem 0; }
.pt-48 { padding-top: 12rem; }
.pt-64 { padding-top: 16rem; }
.pb-32 { padding-bottom: 8rem; }
.pb-48 { padding-bottom: 12rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.rounded-full { border-radius: 9999px; }
.rounded-2xl { border-radius: 1rem; }
.rounded-xl { border-radius: 0.75rem; }

.inline-block { display: inline-block; }
.block { display: block; }

/* Positioning */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.p-fixed { position: fixed; top: 0; left: 0; }
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-50 { z-index: 50; }

/* Flexbox */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}
.flex-col-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  justify-content: space-between;
}
.items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* Backgrounds & Glassmorphism */
.bg-image {
  background-size: cover;
  background-position: center;
  filter: brightness(0.4);
}

.bg-gradient-dark {
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 1));
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

.glass-dark {
  background: var(--glass-dark-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-dark-border);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
}

/* Nav */
.navbar {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  background: rgba(15, 23, 42, 0.98);
}
.nav-link {
  color: var(--text-light);
  font-weight: 500;
  margin: 0 1rem;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
}
.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.125rem; border-radius: 0.75rem; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.3);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.shadow-glow {
  box-shadow: 0 0 20px rgba(79, 70, 229, 0.4);
}

/* Animations */
.animate-fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

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

/* Grid System */
.grid { display: grid; gap: 2rem; }
.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Responsive Media Queries */
@media (min-width: 768px) {
  .md-text-5xl { font-size: 3rem; }
  .md-text-7xl { font-size: 4.5rem; line-height: 1.1; }
  .md-gap-8 { gap: 2rem; }
  .md-grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md-grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 767px) {
  .hide-mobile { display: none; }
  .countdown-wrapper { width: 100%; justify-content: space-between; padding: 1rem; }
  .time-value { font-size: 2rem; }
  .time-sep { margin: 0; }
  .cta-group { flex-direction: column; width: 100%; }
  .cta-group .btn { width: 100%; }
}

/* Utilities */
.text-center { text-align: center; }
.w-full { width: 100%; }

/* Form Styles */
.form-group {
  margin-bottom: 1.5rem;
}
.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all 0.3s ease;
  background-color: #f8fafc;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
  background-color: #fff;
}
/* Missing Utility Classes for new structure */
.bg-white { background-color: #ffffff; }
.bg-gray-50 { background-color: #f9fafb; }
.text-dark { color: var(--text-dark); }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-accent { background-color: var(--accent-color); }
.bg-gray-900 { background-color: #111827; }
.bg-gray-800 { background-color: #1f2937; }
.bg-gray-600 { background-color: #475569; }

/* Grid Gaps */
.gap-10 { gap: 2.5rem; }

/* Spacing */
.space-y-4 > * + * { margin-top: 1rem; }

/* Effects */
.mix-blend-multiply { mix-blend-mode: multiply; }
.filter { filter: var(--tw-blur); }
.blur-3xl { --tw-blur: blur(64px); }
.opacity-10 { opacity: 0.1; }

.hover\:bg-white:hover {
    background-color: #ffffff;
}

.transition-all {
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}
.duration-300 {
    transition-duration: 300ms;
}

/* Sizing */
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.w-64 { width: 16rem; }
.h-64 { height: 16rem; }
.w-80 { width: 20rem; }
.h-80 { height: 20rem; }
.-bottom-6 { bottom: -1.5rem; }
.-left-6 { left: -1.5rem; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.overflow-hidden { overflow: hidden; }

/* Responsive Grid Extensions */
@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg-grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Fix Overlap in About Section */
@media (max-width: 1024px) {
    .about-image { margin-top: 3rem; }
    .-bottom-6 { bottom: 1rem; }
    .-left-6 { left: 1rem; }
}

/* Fix Form Layout Mobile */
@media (max-width: 639px) {
    .grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
}

/* Fix Organizer Icon Aligment */
.items-start { align-items: flex-start; }
.mt-1 { margin-top: 0.25rem; }

/* Premium Form Customizations */
.premium-form-container {
  padding: 3.5rem;
}

.premium-input {
  background: rgba(255, 255, 255, 0.05) !important;
  border: 2px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 1rem !important;
  font-size: 1rem !important;
  padding: 1.5rem 1rem !important;
}

.premium-input::placeholder {
    color: transparent !important;
}
.premium-input:focus {
  border-color: var(--secondary-color) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}
.floating-label {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  transition: all 0.2s ease;
  margin-bottom: 0 !important;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
}
.peer:focus ~ .floating-label,
.peer:not(:placeholder-shown) ~ .floating-label {
    top: 0.25rem;
    left: 1rem;
    font-size: 0.65rem;
    color: var(--accent-color);
    transform: translateY(0);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(79, 70, 229, 0.4);
}

/* Utilities for Footer */
.pt-16 { padding-top: 4rem; }
.pb-8 { padding-bottom: 2rem; }
.mt-0\.5 { margin-top: 0.125rem; }
.leading-relaxed { line-height: 1.625; }
.list-none { list-style-type: none; }
.p-0 { padding: 0; }
.social-icon { 
    text-decoration: none; 
    font-size: 0.8rem; 
    font-weight: bold; 
    background-color: rgba(255, 255, 255, 0.05);
}
.pointer-events-none { pointer-events: none; }

/* Important Hover Overrides */
.hover\:bg-primary:hover { background-color: var(--primary-color) !important; border-color: var(--primary-color) !important; }
.hover\:bg-accent:hover { background-color: var(--accent-color) !important; border-color: var(--accent-color) !important; }
.hover\:bg-secondary:hover { background-color: var(--secondary-color) !important; border-color: var(--secondary-color) !important; }
.hover\:text-accent:hover { color: var(--accent-color) !important; }
.hover\:text-white:hover { color: #fff !important; }
.transition-colors { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 300ms; }

/* Sections */
.hero {
  position: relative;
  overflow: hidden;
}

/* Countdown */
.countdown-wrapper {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.time-value {
  color: #fff;
  text-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

/* About Section Refining */
.about-card {
  position: relative;
  padding: 3rem;
  background: var(--bg-alt);
  border-radius: 2rem;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
}

/* About Section Premium Redesign */
.premium-topic-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 3.5rem 2.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 2.5rem;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  overflow: hidden;
  height: 100%;
}

.premium-topic-card:hover {
  transform: translateY(-12px) scale(1.02);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: 0 40px 80px -15px rgba(0, 0, 0, 0.6);
}

.topic-number {
  position: absolute;
  top: -1.5rem;
  right: -1rem;
  font-size: 8rem;
  font-weight: 900;
  color: #fff;
  opacity: 0.03;
  pointer-events: none;
  font-family: var(--font-display);
}

.topic-icon-box {
  width: 4.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border-radius: 1.25rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 10px 25px -5px rgba(6, 182, 212, 0.4);
}

.topic-icon-box::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, #fff 0%, transparent 100%);
  border-radius: inherit;
  opacity: 0.3;
  z-index: -1;
}

.card-glow {
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 15rem;
  height: 15rem;
  background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
  opacity: 0;
  filter: blur(40px);
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.premium-topic-card:hover .card-glow {
  opacity: 0.15;
}

.topic-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 0.75rem;
}

.topic-desc {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 1rem;
}

/* Minimalist Topic Items - Vertical List Style */
.topic-item {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.topic-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(6, 182, 212, 0.2);
  transform: translateX(8px);
}

.topic-number {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--secondary-color);
  font-family: var(--font-display);
  min-width: 2.5rem;
  text-align: center;
  line-height: 1;
}

.topic-content {
  flex: 1;
}

.topic-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
}

.topic-description {
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.9rem;
}

/* Minimalist Audience Cards */
.audience-card {
  background: #fff;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.05);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
  background: #fff;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.audience-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  border-color: rgba(6, 182, 212, 0.3);
}

.audience-emoji {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.audience-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
}

.audience-desc {
  color: var(--text-muted);
  line-height: 1.5;
  font-size: 0.9rem;
}

/* Minimalist Registration Form */
.registration-form {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

.registration-form .form-group {
  margin-bottom: 1.5rem;
}

.registration-form .form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #cbd5e1;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.registration-form .form-control {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.registration-form .form-control:focus {
  outline: none;
  border-color: var(--secondary-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.registration-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.organizer-info {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.organizer-info strong {
  color: #cbd5e1;
}

/* Footer Refining */
footer {
  background: #0f172a;
  color: var(--text-muted) !important;
}

footer h4, footer h5 {
  color: #cbd5e1 !important;
}

footer a {
  color: var(--text-muted) !important;
}

footer a:hover {
  color: #fff !important;
}

.social-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted) !important;
}

.social-icon:hover {
  background: var(--primary-color);
  color: #fff !important;
  border-color: var(--primary-color);
}

@media (max-width: 768px) {
  .hero-title { font-size: 3rem !important; }
  .py-32 { padding: 5rem 0; }
  .pt-64 { padding-top: 10rem; }
  .premium-form-container { padding: 2rem; }
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: #1f2937;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  z-index: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 0;
  font-family: var(--font-display);
}

.modal-close {
  background: transparent;
  border: none;
  color: #9ca3af;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: #fff;
}

.modal-body {
  padding: 2rem;
  color: #d1d5db;
  line-height: 1.6;
}

.modal-body h3 {
  color: #fff;
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
}

.modal-body h3:first-child {
  margin-top: 0;
}

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

.modal-body ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.modal-body li {
  margin-bottom: 0.5rem;
}

/* Conference Objective Section */
.objective-section {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Conference Agenda Section */
.agenda-section {
  background-color: #111827;
}

.agenda-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.agenda-tab {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.agenda-tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
}

.agenda-tab.active {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(6, 182, 212, 0.2));
  color: var(--secondary-color);
  border-color: var(--secondary-color);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.15);
}

.agenda-panel {
  display: none;
  animation: fadeIn 0.5s ease;
}

.agenda-panel.active {
  display: block;
}

.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.agenda-table-wrap {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.agenda-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.agenda-table thead tr {
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.agenda-table th {
  color: rgba(255, 255, 255, 0.4);
  padding: 1rem 1.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.agenda-table tbody tr {
  background: rgba(255, 255, 255, 0.01);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background-color 0.2s ease;
}

.agenda-table tbody tr:last-child {
  border-bottom: none;
}

.agenda-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

.agenda-table td {
  padding: 1.25rem 1.5rem;
  color: #cbd5e1;
  font-size: 0.95rem;
}

.agenda-table .time-cell {
  color: var(--secondary-color);
  font-weight: 600;
  white-space: nowrap;
  width: 28%;
  font-size: 0.875rem;
}

/* Form Select Customization */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23cbd5e1'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.2em;
  padding-right: 2.5rem !important;
}

.form-select option {
  background-color: #1f2937;
  color: #fff;
}