:root {
  --joint-bg: #fdfdfb;
  --joint-surface: #ffffff;
  --joint-base-ink: #111d13;
  --joint-muted-ink: #4f5d54;
  --joint-accent-color: #1b4332;
  --joint-accent-hover: #2d6a4f;
  --joint-accent-light: #f1f6f2;
  --joint-border-line: #d8e2dc;
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --joint-radius: 16px;
  --joint-shadow: 0 10px 30px -10px rgba(27, 67, 50, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
}

/* Header & Hamburger menu CSS only */
#nav-toggle:checked ~ .joint-mobile-dropdown {
  display: block;
}
.artic-hero-outer {
  background: url('./img/bg2.webp') no-repeat center/cover;
}
.joint-mobile-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
  box-shadow: var(--joint-shadow);
}

/* Scroll-driven animations */
@keyframes progress-grow {
  to { width: 100%; }
}

.navigation-progress {
  height: 4px;
  width: 0;
  background: #ffffff;
  animation: progress-grow linear;
  animation-timeline: scroll();
}

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

.reveal-view {
  animation: slide-up both;
  animation-timeline: view();
  animation-range: entry 5% entry 30%;
}

/* Hover transitions */
.motion-accent-btn {
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.motion-accent-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(27, 67, 50, 0.2);
}

.oste-manifesto-item {
  transition: background-color 0.3s ease;
}

.oste-manifesto-item:hover {
  background-color: rgba(27, 67, 50, 0.02);
}

/* Responsiveness adjustments */
@media (max-width: 768px) {
  .reveal-view {
    animation-timeline: none;
    animation-range: none;
  }
  
  .joint-main-heading {
    font-size: 1.85rem !important;
  }
}