@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  /* Color Palette */
  --synapse-bg: #090d1a;
  --synapse-card: #121829;
  --synapse-card-hover: #1b233a;
  --synapse-primary: #7c3aed;
  --synapse-primary-hover: #6d28d9;
  --synapse-primary-rgb: 124, 58, 237;
  --synapse-accent: #ec4899;
  --synapse-accent-rgb: 236, 72, 153;
  --synapse-cyan: #06b6d4;
  
  /* Text Colors */
  --synapse-text-primary: #ffffff;
  --synapse-text-secondary: #94a3b8;
  --synapse-text-muted: #64748b;
  
  /* Gradients */
  --synapse-gradient-primary: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  --synapse-gradient-hover: linear-gradient(135deg, #6d28d9 0%, #db2777 100%);
  --synapse-gradient-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --synapse-gradient-dark: linear-gradient(180deg, #121829 0%, #090d1a 100%);
  
  /* Fonts */
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  
  /* Transitions */
  --transition-fast: all 0.2s ease-in-out;
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Base resets & layouts
   ========================================================================== */
body {
  background-color: var(--synapse-bg);
  color: var(--synapse-text-secondary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--synapse-text-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: var(--synapse-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}
a:hover {
  color: var(--synapse-accent);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--synapse-bg);
}
::-webkit-scrollbar-thumb {
  background: #1e293b;
  border: 2px solid var(--synapse-bg);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #334155;
}

/* Selection */
::selection {
  background-color: rgba(124, 58, 237, 0.3);
  color: var(--synapse-text-primary);
}

/* Override Bootstrap Text Utilities for Dark Theme readability */
.text-secondary {
  color: var(--synapse-text-secondary) !important;
}
.text-muted {
  color: var(--synapse-text-muted) !important;
}

/* ==========================================================================
   Layout Helpers & UI Elements
   ========================================================================== */
.section-padding {
  padding: 100px 0;
}
@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
}

/* Gradient Text */
.text-gradient {
  background: var(--synapse-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.text-gradient-cyan {
  background: var(--synapse-gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Glassmorphism Card Base */
.glass-card {
  background: rgba(18, 24, 41, 0.6);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  transition: var(--transition-normal);
}
.glass-card:hover {
  border-color: rgba(124, 58, 237, 0.2);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Glowing Background Blobs */
.glow-wrapper {
  position: relative;
}
.glow-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
  width: 400px;
  height: 400px;
}
.glow-primary {
  background: var(--synapse-primary);
}
.glow-accent {
  background: var(--synapse-accent);
}
.glow-cyan {
  background: var(--synapse-cyan);
}

/* Premium Buttons */
.btn-synapse-primary {
  background: var(--synapse-gradient-primary);
  color: var(--synapse-text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none;
  padding: 12px 28px;
  border-radius: 8px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.btn-synapse-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--synapse-gradient-hover);
  opacity: 0;
  z-index: -1;
  transition: var(--transition-fast);
}
.btn-synapse-primary:hover {
  color: var(--synapse-text-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
}
.btn-synapse-primary:hover::before {
  opacity: 1;
}

.btn-synapse-outline {
  background: transparent;
  color: var(--synapse-text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  padding: 11px 26px;
  border-radius: 8px;
  transition: var(--transition-normal);
}
.btn-synapse-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--synapse-text-primary);
  border-color: var(--synapse-text-primary);
  transform: translateY(-2px);
}

/* Section Header styling */
.section-subtitle {
  font-family: var(--font-heading);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.15em;
  font-size: 0.85rem;
  margin-bottom: 12px;
  background: var(--synapse-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}
@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
}

/* ==========================================================================
   Header Navbar
   ========================================================================== */
header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}
header .navbar {
  padding: 20px 0;
  transition: var(--transition-normal);
  border-bottom: 1px solid transparent;
}
header .navbar.scrolled {
  padding: 12px 0;
  background: rgba(9, 13, 26, 0.85) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--synapse-text-primary) !important;
  display: flex;
  align-items: center;
}
.navbar-brand span {
  background: var(--synapse-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar-nav .nav-link {
  color: var(--synapse-text-secondary) !important;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 16px !important;
  transition: var(--transition-fast);
  position: relative;
}
.navbar-nav .nav-link::before {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0px;
  height: 2px;
  background: var(--synapse-gradient-primary);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: bottom center;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before,
.navbar-nav .dropdown-toggle.active::before {
  transform: scaleX(1);
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--synapse-text-primary) !important;
}

.navbar-toggler {
  border: none;
  padding: 0;
}
.navbar-toggler:focus {
  box-shadow: none;
}
.navbar-toggler-icon {
  background-image: none;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--synapse-text-primary);
  display: inline-block;
  transition: var(--transition-fast);
}
.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--synapse-text-primary);
  transition: var(--transition-fast);
}
.navbar-toggler-icon::before {
  top: -6px;
  left: 0;
}
.navbar-toggler-icon::after {
  bottom: -6px;
  left: 0;
}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
  background-color: transparent;
}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
  transform: rotate(45deg);
  top: 0;
}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
  transform: rotate(-45deg);
  bottom: 0;
}

/* ==========================================================================
   Mobile & Tablet Offcanvas Side Menu Styling
   ========================================================================== */
@media (max-width: 991px) {
  .navbar-toggler {
    z-index: 1050;
    position: relative;
  }
  .navbar-collapse {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: rgba(21, 27, 48, 0.99) !important;
    backdrop-filter: blur(25px) !important;
    border-left: 2px solid rgba(6, 182, 212, 0.6) !important;
    box-shadow: -15px 0 35px rgba(0, 0, 0, 0.7), 0 0 25px rgba(6, 182, 212, 0.1) !important;
    padding: 80px 30px 60px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: flex-start !important;
    align-items: flex-start !important;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
    z-index: 1040;
    margin: 0 !important;
    overflow-y: auto !important;
  }
  .navbar-collapse:not(.show) {
    right: -300px !important;
    display: flex !important;
  }
  .navbar-collapse.show {
    right: 0 !important;
  }
  
  .navbar-nav {
    flex-direction: column !important;
    width: 100% !important;
    margin-right: 0 !important;
    margin-left: 0 !important;
    margin-bottom: 5px !important;
    gap: 5px !important;
  }
  .navbar-nav .nav-item {
    width: 100% !important;
  }
  .navbar-nav .nav-link {
    width: 100% !important;
    padding: 8px 0 !important;
    font-size: 1.1rem !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
  }
  .navbar-nav .nav-link::before {
    left: 0 !important;
    right: auto !important;
    width: 30px !important;
    bottom: 5px !important;
  }
  .navbar-nav .dropdown-menu {
    position: static !important;
    background: rgba(255, 255, 255, 0.03) !important;
    border: none !important;
    box-shadow: none !important;
    margin-top: 5px !important;
    padding-left: 15px !important;
    width: 100% !important;
  }
  
  .navbar-collapse .d-flex {
    width: 100% !important;
    margin-top: 5px !important;
  }
  .navbar-collapse .btn-synapse-primary {
    width: 100% !important;
    justify-content: center !important;
    padding: 12px 24px !important;
  }
}

/* ==========================================================================
   Footer Styling
   ========================================================================== */
footer {
  background-color: #05070f;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  z-index: 1;
  content-visibility: auto;
  contain-intrinsic-size: auto 450px;
}

.footer-top {
  padding: 80px 0 50px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--synapse-text-primary);
  margin-bottom: 20px;
}
.footer-logo span {
  background: var(--synapse-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-info-text {
  font-size: 0.95rem;
  color: var(--synapse-text-secondary);
}

.footer-social-links {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.footer-social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--synapse-text-secondary);
  transition: var(--transition-fast);
}
.footer-social-icon:hover {
  background: var(--synapse-gradient-primary);
  color: var(--synapse-text-primary);
  border-color: transparent;
  transform: translateY(-3px);
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 25px;
  color: var(--synapse-text-primary);
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--synapse-gradient-primary);
  border-radius: 1px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 12px;
}
.footer-links a {
  color: var(--synapse-text-secondary);
  font-size: 0.95rem;
}
.footer-links a:hover {
  color: var(--synapse-text-primary);
  padding-left: 5px;
}

.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.footer-contact-item i {
  color: var(--synapse-primary);
  font-size: 1.1rem;
}

.footer-bottom {
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

/* ==========================================================================
   Shared Micro Components
   ========================================================================== */
.form-control-synapse {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--synapse-text-primary);
  padding: 12px 20px;
  border-radius: 8px;
  font-family: var(--font-body);
  transition: var(--transition-fast);
}
.form-control-synapse:focus {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--synapse-primary);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15);
  color: var(--synapse-text-primary);
}
.form-control-synapse::placeholder {
  color: var(--synapse-text-muted);
}

/* ==========================================================================
   Navigation Dropdown Custom Theme
   ========================================================================== */
.navbar-nav .dropdown-menu {
  background: rgba(15, 23, 42, 0.95) !important;
  backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 12px !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(124, 58, 237, 0.1) !important;
  padding: 10px !important;
  margin-top: 10px !important;
}
.navbar-nav .dropdown-item {
  color: #94a3b8 !important;
  font-family: var(--font-heading) !important;
  font-weight: 500 !important;
  font-size: 0.9rem !important;
  padding: 8px 16px !important;
  border-radius: 8px !important;
  transition: all 0.3s ease !important;
  background: transparent !important;
}
.navbar-nav .dropdown-item:hover,
.navbar-nav .dropdown-item:focus {
  background: rgba(124, 58, 237, 0.15) !important;
  color: #ffffff !important;
  text-shadow: 0 0 5px rgba(124, 58, 237, 0.5) !important;
}
.navbar-nav .dropdown-toggle::after {
  vertical-align: 0.18em !important;
  border-top: 0.35em solid !important;
  border-right: 0.35em solid transparent !important;
  border-left: 0.35em solid transparent !important;
  margin-left: 6px !important;
}

/* Aspect-ratio helper declarations to mitigate Layout Shifts (CLS) */
.speaker-card img,
.speaker-image-container img {
  aspect-ratio: 1 / 1 !important;
  width: 100% !important;
  height: auto !important;
}

.main-about-img,
.video-mockup-thumbnail {
  aspect-ratio: 1376 / 768 !important;
  width: 100% !important;
  height: auto !important;
}