/* ================================================================
   GLOBAL-NAV.CSS
   Shared styles for:
     1. Site header & logo (used by ALL public pages)
     2. Global nav active-page indicator
     3. Local / page section nav (sticky tab bar)
   Loaded by all public pages alongside their own page CSS.
   ================================================================ */

/* ── CSS custom properties (fallback for pages without their own CSS vars) */
:root {
  --primary-green: #10B981;
  --primary-blue:  #3B82F6;
  --text-black:    #1F2937;
  --success-green: #22C55E;
}

/* ── 0. Site header ──────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.15);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.logo-img {
  width: 2.6rem;
  height: 2.6rem;
  object-fit: cover;
  border-radius: 25%;
  box-shadow:
    0 4px 14px -2px rgba(59, 130, 246, 0.45),
    0 2px 6px -1px rgba(14, 22, 40, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.logo-img:hover { transform: scale(1.1); }

.logo-text {
  font-size: 1.1rem;
  color: #1F2937;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  letter-spacing: 0.01em;
  color: #1F2937;
  text-decoration: none;
  transition: color 0.25s ease, background-color 0.25s ease, transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background-color: rgba(59, 130, 246, 0.1);
  color: #3B82F6;
  transform: translateY(-1px);
}

.nav-cta {
  background: #10B981 !important;
  color: white !important;
  box-shadow: 0 12px 30px -18px #10B981;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: #22C55E !important;
  color: white !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.4rem;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #1F2937;
  margin-bottom: 5px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 500;
  cursor: pointer;
}
.nav-backdrop.is-open { display: block; }

/* ── Slide-down animation for mobile nav ────────────────────────────── */
@keyframes navSlideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
  }
  to {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
}

/* Mobile nav */
@media (max-width: 900px) {
  /* Override .inner position:relative so .site-header (sticky) becomes
     the containing block → nav stretches to full viewport width */
  .site-header .inner {
    position: static;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 0 1rem;
    gap: 0;
    border-bottom: 3px solid rgba(59, 130, 246, 0.18);
    box-shadow: 0 20px 40px -10px rgba(14, 22, 40, 0.15);
    z-index: 999;
  }

  .site-header.nav-open .site-nav {
    display: flex;
    animation: navSlideDown 0.28s cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .site-nav a {
    padding: 0.9rem 1.75rem;
    border-radius: 0;
    font-size: 1rem;
    font-weight: 500;
    justify-content: flex-start;
    border-bottom: 1px solid rgba(59, 130, 246, 0.07);
    color: #1F2937;
    transform: none;
    transition: background-color 0.2s ease, color 0.2s ease;
  }

  .site-nav a:last-child {
    border-bottom: none;
    margin-top: 0.5rem;
    margin: 0.75rem 1.25rem 0;
    border-radius: 12px;
    justify-content: center;
  }

  .site-nav a:hover,
  .site-nav a:focus-visible {
    background-color: rgba(59, 130, 246, 0.07);
    color: #3B82F6;
    transform: none;
  }

  .menu-toggle { display: block; }

  /* Hamburger bars → X when open */
  .site-header.nav-open .menu-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .site-header.nav-open .menu-toggle span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .site-header.nav-open .menu-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* ── 1. Active page indicator in global nav ──────────────────── */
.site-nav a.active {
  background-color: rgba(59, 130, 246, 0.12);
  color: var(--primary-blue, #3B82F6);
  font-weight: 600;
}

/* The CTA button must never look "active" even when on that page */
.site-nav a.nav-cta.active {
  background: var(--primary-green, #10B981) !important;
  color: white !important;
}

/* ── 2. Local nav wrapper ─────────────────────────────────────── */
.local-nav {
  position: sticky;
  top: 65px;           /* just below the 65px-tall site-header */
  z-index: 900;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.13);
  box-shadow: 0 2px 8px -4px rgba(14, 22, 40, 0.08);
}

/* Scrollable track (no visible scrollbar) */
.local-nav-track {
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 0 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.local-nav-track::-webkit-scrollbar { display: none; }

/* ── 3. Individual local nav link ────────────────────────────── */
.local-nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: "Inter", sans-serif;
  color: #6B7280;
  white-space: nowrap;
  flex-shrink: 0;
  text-decoration: none;
  border-bottom: 2.5px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.local-nav-link:hover {
  color: var(--primary-blue, #3B82F6);
  background-color: rgba(59, 130, 246, 0.04);
}

.local-nav-link.active {
  color: var(--primary-blue, #3B82F6);
  border-bottom-color: var(--primary-blue, #3B82F6);
  font-weight: 600;
}

/* ── 4. Mobile ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .local-nav {
    top: 60px;
  }

  .local-nav-track {
    padding: 0 0.75rem;
  }

  .local-nav-link {
    padding: 0.65rem 0.85rem;
    font-size: 0.82rem;
  }
}