/* ============================================================
   NAVIGATION — Sticky navbar, dropdown, mobile drawer
   ============================================================ */

/* --- Sticky navbar --- */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: 14px 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--duration-normal) var(--ease-smooth),
              padding var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
}

.navbar.scrolled {
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}


/* --- Logo --- */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-dark);
  z-index: 10;
}

.nav-logo svg { width: 32px; height: 32px; }
.nav-logo .logo-accent { color: var(--accent-amber); }


/* --- Nav links --- */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-dark-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 8px 0;
  transition: color var(--duration-normal);
}

.nav-link:hover,
.nav-link.active { color: var(--text-dark); }

.navbar.scrolled .nav-link { color: var(--text-dark-secondary); }
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active { color: var(--primary); }

/* Active underline */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }


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

.nav-dropdown > .nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-dropdown > .nav-link .chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--duration-normal);
}

.nav-dropdown:hover > .nav-link .chevron { transform: rotate(180deg); }

.dropdown-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: 440px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  padding-top: calc(var(--space-lg) + 8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal);
  pointer-events: none;
  box-shadow: var(--shadow-xl);
}

/* Invisible bridge to prevent hover gap */
.dropdown-panel::after {
  content: '';
  position: absolute;
  top: -16px;
  left: 0;
  right: 0;
  height: 16px;
}

.nav-dropdown:hover .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* Arrow */
.dropdown-panel::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: var(--bg-white);
  border-top: 1px solid var(--border-color);
  border-left: 1px solid var(--border-color);
}

.dropdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  transition: background var(--duration-fast);
}

.dropdown-item:hover { background: var(--primary-50); }

.dropdown-item-thumb {
  width: 40px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.dropdown-item-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-dark-secondary);
  line-height: 1.3;
}

.dropdown-item:hover .dropdown-item-name { color: var(--primary-dark); }


/* --- Nav CTA button --- */
.nav-cta {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: background var(--duration-normal), transform var(--duration-normal);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}


/* --- Hamburger --- */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 10;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--duration-normal);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }


/* --- Mobile slide-in drawer --- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--bg-white);
  z-index: var(--z-overlay);
  padding: 80px var(--space-xl) var(--space-xl);
  transition: right var(--duration-slow) var(--ease-out);
  border-left: 1px solid var(--border-color);
  overflow-y: auto;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.08);
}

.mobile-nav.open { right: 0; }

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(28, 18, 16, 0.3);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.mobile-nav-overlay.open { opacity: 1; }

.mobile-nav-link {
  display: block;
  padding: 14px 0;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-dark);
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:hover { color: var(--primary); }

.mobile-dropdown-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.mobile-dropdown-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out);
}

.mobile-dropdown-content.open { max-height: 500px; }

.mobile-dropdown-content a {
  display: block;
  padding: 8px 0 8px 16px;
  font-size: var(--text-sm);
  color: var(--text-dark-secondary);
}

.mobile-dropdown-content a:hover { color: var(--primary); }


/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: block; }
  .mobile-nav-overlay { display: block; }
  .dropdown-panel { display: none !important; }
  .nav-logo { font-size: var(--text-lg); }
  .nav-logo svg { width: 28px; height: 28px; }
}

@media (max-width: 480px) {
  .navbar { padding: 10px 0; }
  .nav-logo { font-size: var(--text-base); }
  .nav-logo svg { width: 24px; height: 24px; }
  .mobile-nav { width: 260px; padding: 70px var(--space-lg) var(--space-lg); }
  .mobile-nav-link { font-size: var(--text-base); padding: 12px 0; }
}

@media (max-width: 360px) {
  .mobile-nav { width: 240px; }
}