/* ============================================================
   TunaGrow CBO — Navigation Styles
   File: css/nav.css
   ============================================================ */

/* ── Site Header (Top Row) ── */
header.site-header {
  position: fixed; top: 0; width: 100%; z-index: 110;
  background: var(--surface); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  height: 72px;
  transition: transform 0.35s ease, opacity 0.35s ease;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; padding: 0 5%;
}

/* ── Secondary Nav (Bottom Row) ── */
nav.secondary-nav {
  position: fixed; top: 72px; width: 100%; z-index: 100;
  background: rgba(253,246,236,0.97); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: 54px;
  transition: transform 0.35s ease, opacity 0.35s ease;
}
.nav-inner {
  display: flex; align-items: center; justify-content: center; /* Center the links */
  height: 100%; padding: 0 5%;
}

.header-actions { display: flex; align-items: center; gap: 16px; }

.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo-icon {
  width: 54px; height: 54px; background: var(--leaf);
  border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-size: 26px; flex-shrink: 0;
}
.nav-logo-text {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem; color: var(--text); font-weight: 800;
}
.nav-logo-text span { color: var(--leaf); }

.nav-links { display: flex; gap: 32px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  text-decoration: none; color: var(--soil);
  font-size: 0.95rem; font-weight: 600; transition: color 0.2s;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.nav-links a:hover { color: var(--leaf); }

.nav-cta {
  background: var(--leaf); color: var(--white); border: none;
  padding: 10px 24px; border-radius: 30px;
  font-family: 'DM Sans', sans-serif; font-size: 0.9rem; font-weight: 600;
  cursor: pointer; transition: background 0.2s, transform 0.1s;
  text-decoration: none; white-space: nowrap; display: inline-block;
}
.nav-cta:hover { background: var(--soil); transform: scale(1.02); }

/* ── Mobile Menu Bar (hamburger below header) ── */
.mobile-menu-bar {
  display: none;                     /* hidden on desktop */
  position: fixed;
  top: 72px; left: 0;
  width: 100%;
  background: var(--surface);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 8px 5%;
  justify-content: flex-start;       /* left aligned */
  transition: transform 0.35s ease, opacity 0.35s ease;
}
/* Hide mobile bar together with nav on scroll down */
.mobile-menu-bar.nav--hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

/* Hamburger button (inside mobile-menu-bar) */
.hamburger-btn {
  display: flex;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 6px; border-radius: 8px;
  transition: background 0.2s;
  z-index: 200;
}
.hamburger-btn:hover { background: rgba(107,66,38,0.08); }
.hamburger-btn span {
  display: block; width: 22px; height: 2px;
  background: var(--earth); border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

/* Animate to X when open */
.hamburger-btn.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-btn.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger-btn.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile Slide-in Drawer ── */
.mobile-drawer {
  display: none; /* shown only on mobile via media query */
  position: fixed;
  top: 112px; left: 0;
  width: 62%;           /* occupies left portion only */
  max-width: 260px;
  height: calc(100vh - 112px);
  background: rgba(253,246,236,0.98);
  backdrop-filter: blur(12px);
  border-right: 1px solid rgba(107,66,38,0.1);
  box-shadow: 4px 0 24px rgba(59,42,26,0.12);
  z-index: 98;
  padding: 28px 24px 40px;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;

  /* Slide-in from left */
  transform: translateX(-110%);
  opacity: 0;
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1),
              opacity   0.32s cubic-bezier(0.4,0,0.2,1);
  pointer-events: none;
}

.mobile-drawer.is-open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: all;
}

/* Drawer backdrop (dim the right side) */
.drawer-backdrop {
  display: none;
  position: fixed;
  inset: 112px 0 0 0;
  background: rgba(59,42,26,0.18);
  backdrop-filter: blur(2px);
  z-index: 97;
  opacity: 0;
  transition: opacity 0.32s ease;
  pointer-events: none;
}
.drawer-backdrop.is-open {
  opacity: 1;
  pointer-events: all;
}

/* Drawer nav links */
.mobile-drawer a {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--soil);
  font-size: 0.95rem; font-weight: 500;
  padding: 11px 14px; border-radius: 10px;
  transition: background 0.18s, color 0.18s;
}
.mobile-drawer a:hover,
.mobile-drawer a.active-link {
  background: rgba(74,124,63,0.1);
  color: var(--leaf);
}

/* Divider inside drawer */
.mobile-drawer .drawer-divider {
  height: 1px;
  background: rgba(107,66,38,0.1);
  margin: 10px 0;
}

/* Donate CTA inside drawer */
.mobile-drawer .drawer-cta {
  background: var(--leaf); color: var(--white) !important;
  border-radius: 20px; text-align: center;
  justify-content: center; margin-top: 6px;
  font-weight: 600 !important;
}
.mobile-drawer .drawer-cta:hover {
  background: var(--soil) !important;
  color: var(--white) !important;
}

/* ── Responsive Breakpoints ── */
@media (max-width: 900px) {
  nav.secondary-nav { display: none; }
  .mobile-menu-bar  { display: flex; }       /* show hamburger bar */
  .mobile-drawer    { display: flex; top: 116px; height: calc(100vh - 116px); }
  .drawer-backdrop  { display: block; top: 116px; }
  /* Keep donate button visible on mobile */
  .nav-cta {
    font-size: 0.85rem;
    padding: 8px 18px;
  }
}
@media (min-width: 901px) {
  .mobile-menu-bar  { display: none !important; }
  .mobile-drawer    { display: none !important; }
  .drawer-backdrop  { display: none !important; }
}
/* ============================================================
   TunaGrow CBO — Nav Additions: About Dropdown + Mobile Sub-links
   APPEND these rules to the bottom of css/nav.css
   ============================================================ */

/* ── Desktop Dropdown ── */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a {
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav-dropdown > a::after {
  content: '▾';
  font-size: 0.7rem;
  color: var(--muted);
  transition: transform 0.25s;
}

/* Caret flips when JS adds .is-open */
.nav-dropdown.is-open > a::after {
  transform: rotate(180deg);
}

/* ── The menu itself ── */
.nav-dropdown-menu {
  /* Use visibility+opacity instead of display:none so
     pointer-events and transitions both work properly    */
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: calc(100% + 4px);   /* reduced gap — covered by padding bridge below */
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;

  background: rgba(253,246,236,0.98);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(107,66,38,0.12);
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(59,42,26,0.14);
  /* Extra padding-top creates an invisible bridge between the
     trigger link and the visible menu box so the cursor never
     leaves the hover zone while moving diagonally downward   */
  padding: 18px 8px 10px;
  min-width: 200px;
  z-index: 200;
  list-style: none;
}

/* Caret pointer above the visible box (sits inside the padding bridge) */
.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 7px solid rgba(107,66,38,0.12);
}
.nav-dropdown-menu::after {
  content: '';
  position: absolute;
  top: 13px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid rgba(253,246,236,0.98);
}

/* Shown state — JS adds .is-open to the .nav-dropdown */
.nav-dropdown.is-open .nav-dropdown-menu {
  visibility: visible;
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0s;
}

.nav-dropdown-menu li a {
  display: block;
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 0.87rem;
  color: var(--soil);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s, color 0.18s;
}
.nav-dropdown-menu li a:hover {
  background: rgba(74,124,63,0.1);
  color: var(--leaf);
}

/* Thin divider inside dropdown */
.nav-dropdown-menu .dropdown-divider {
  height: 1px;
  background: rgba(107,66,38,0.1);
  margin: 6px 8px;
}


/* ── Mobile Drawer Sub-links (indented under About) ── */
.mobile-drawer .drawer-sub-link {
  padding-left: 30px !important;
  font-size: 0.88rem !important;
  color: var(--muted) !important;
}
.mobile-drawer .drawer-sub-link:hover,
.mobile-drawer .drawer-sub-link.active-link {
  background: rgba(74,124,63,0.07) !important;
  color: var(--leaf) !important;
}

.mobile-drawer .drawer-sub-header {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 8px 14px 4px;
}

/* ── Large screens ≥ 1440px ── */
@media (min-width: 1440px) {
  nav { padding: 0 8%; }
}
@media (min-width: 1920px) {
  nav { padding: 0 10%; }
}

@media (min-width: 2560px) { nav { padding: 0 8%; max-width: 100%; } }
@media (min-width: 3840px) { nav { padding: 0 8%; } }