/* ==========================================================================
   SHARED UI COMPONENTS
   Buttons, badges, cards, and the site navigation.
   Reused across the current sections and intended for reuse in Prompt 2 & 3.
   ========================================================================== */

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 0 1px rgba(240,121,28,0.2), 0 30px 60px -18px rgba(240,121,28,0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--navy-900);
  border: 1.5px solid var(--border-strong);
}

.btn-secondary:hover {
  border-color: var(--accent-500);
  color: var(--accent-600);
  background: var(--accent-100);
}

.btn-nav-cta {
  background: var(--navy-900);
  color: #fff;
  padding: 0.65rem 1.35rem;
  font-size: 0.875rem;
}

.btn-nav-cta:hover { background: var(--accent-600); }

.btn-block { width: 100%; }

/* ---- Badges / pills ---- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--accent-100);
  color: var(--accent-600);
}

/* ---- Card primitive ---- */

.card {
  background: var(--bg-white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* ---- Icon tile ---- */

.icon-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-100);
  color: var(--accent-600);
  flex-shrink: 0;
}

.icon-tile svg { width: 24px; height: 24px; }

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: height var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}

.nav.is-scrolled {
  height: var(--nav-h-compact);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 8px 30px -20px rgba(10, 15, 30, 0.25);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--navy-900);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.nav-logo-mark {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--charcoal-700);
  position: relative;
  padding: 0.3rem 0;
  transition: color var(--t-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast);
  border-radius: 2px;
}

.nav-link:hover { color: var(--navy-900); }
.nav-link:hover::after { transform: scaleX(1); }

/* External link (e.g. UV Business Solutions) — quieter than the
   internal nav items it sits beside. */
.nav-link-external {
  color: var(--charcoal-300);
  font-size: 0.85rem;
}

.nav-link-external:hover { color: var(--accent-600); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.nav-toggle-bars {
  position: relative;
  width: 20px;
  height: 14px;
}

.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--navy-900);
  border-radius: 2px;
  transition: transform var(--t-fast), opacity var(--t-fast), top var(--t-fast);
}

.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 6px; }
.nav-toggle-bars span:nth-child(3) { top: 12px; }

.nav-toggle.is-open .nav-toggle-bars span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.nav-toggle.is-open .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle-bars span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

/* ---- Mobile menu panel ---- */

.mobile-menu {
  position: fixed;
  inset: var(--nav-h-compact) 0 0 0;
  background: var(--bg-white);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 1rem var(--container-pad) 2rem;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base), transform var(--t-base), visibility var(--t-base);
}

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.mobile-menu .nav-link {
  font-size: 1.1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-menu-cta { margin-top: 1.5rem; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-right .btn-nav-cta { display: none; }
  .nav-toggle { display: flex; }
}

/* ==========================================================================
   SHARED ADDITIONS — introduced in Prompt 2, reusable by any future section.
   ========================================================================== */

/* ---- Tag / capability pill list ---- */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--charcoal-700);
  background: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.85rem;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}

.tag:hover {
  border-color: var(--accent-300);
  color: var(--accent-600);
  background: var(--accent-100);
}