:root {
  --bg-dark: #05070c;
  --text-light: #f3f4f6;
  --text-muted: #9ca3af;
  --border-glow-left: rgba(139, 92, 246, 0.3);
  --border-glow-right: rgba(20, 184, 166, 0.3);
  --font-outfit: 'Outfit', sans-serif;
  --font-inter: 'Inter', sans-serif;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: var(--font-inter);
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Split Screen Layout */
.split-container {
  display: flex;
  flex: 1;
  width: 100vw;
  min-height: 100vh;
  position: relative;
}

.split-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem 6rem 2rem;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: flex 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
}

/* Left Side: TDR Research Council */
.split-panel.panel-innovative {
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.12) 0%, transparent 60%),
    linear-gradient(135deg, #070912 0%, #0c091f 100%);
  border-right: 1px solid rgba(255, 255, 255, 0.03);
}

/* Right Side: Global Bio Invention Centre */
.split-panel.panel-global {
  background-image: 
    radial-gradient(circle at 80% 70%, rgba(20, 184, 166, 0.1) 0%, transparent 60%),
    linear-gradient(135deg, #070912 0%, #051412 100%);
}

/* Glass Cards inside panels */
.panel-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 3.5rem 2.5rem;
  border-radius: 24px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.5s ease, box-shadow 0.5s ease;
  z-index: 2;
}

/* Hover States & Flex-grow Transitions */
.split-container:hover .split-panel:not(:hover) {
  flex: 0.8;
  filter: brightness(0.4) blur(1px);
}

.split-container:hover .split-panel:hover {
  flex: 1.2;
  filter: brightness(1.05);
}

.split-panel.panel-innovative:hover .panel-card {
  transform: translateY(-8px);
  border-color: var(--border-glow-left);
  box-shadow: 0 16px 48px rgba(139, 92, 246, 0.15);
}

.split-panel.panel-global:hover .panel-card {
  transform: translateY(-8px);
  border-color: var(--border-glow-right);
  box-shadow: 0 16px 48px rgba(20, 184, 166, 0.12);
}

/* Brand Accent Colors */
.brand-logo-container {
  margin-bottom: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.panel-logo {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: contain;
}

.logo-badge {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-outfit);
  background: linear-gradient(135deg, #ffffff 40%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.panel-global .logo-badge {
  background: linear-gradient(135deg, #ffffff 40%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.panel-title {
  font-family: var(--font-outfit);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  line-height: 1.3;
  color: #ffffff;
}

.panel-desc {
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Dynamic Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  border-radius: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: var(--font-inter);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  width: 100%;
}

.panel-innovative .btn {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
}

.panel-innovative .btn:hover {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45);
  transform: translateY(-1px);
}

.panel-global .btn {
  background: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}

.panel-global .btn:hover {
  background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.45);
  transform: translateY(-1px);
}

/* Shared Footer */
.gateway-footer {
  position: absolute;
  bottom: 1.5rem;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  z-index: 10;
  pointer-events: none;
}

/* Accessbility: Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  .split-panel, .panel-card, .btn {
    transition: none !important;
    transform: none !important;
  }
  .split-container:hover .split-panel {
    flex: 1 !important;
    filter: none !important;
  }
}

/* Responsive Mobile Layout */
@media (max-width: 768px) {
  .split-container {
    flex-direction: column;
    min-height: 100vh;
  }
  .split-panel {
    flex: 1;
    padding: 3rem 1.5rem;
  }
  .split-container:hover .split-panel {
    flex: 1 !important;
    filter: none !important;
  }
  .panel-card {
    padding: 2rem 1.5rem;
  }
  .gateway-footer {
    position: relative;
    bottom: auto;
    padding: 1.25rem;
    background-color: #04050a;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
  }
  .panel-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: contain;
  }
}