/* =========================================================
   navbar.css — Sticky navigation, search, mobile drawer
   ========================================================= */

.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.navbar.is-scrolled {
  background: rgba(9, 9, 11, 0.92);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* Logo */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.brand-name span { color: var(--color-accent-2); }

/* Primary nav links (desktop) */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-right: auto;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-text-primary); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
}

/* Search */
.nav-search {
  position: relative;
  flex: 1;
  max-width: 420px;
}
.nav-search-input {
  width: 100%;
  height: 42px;
  padding: 0 var(--space-4) 0 42px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.nav-search-input::placeholder { color: var(--color-text-muted); }
.nav-search-input:focus {
  border-color: var(--color-accent);
  background: var(--color-bg-elevated);
  outline: none;
}
.nav-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
  font-size: 0.95rem;
}
.nav-search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 1rem;
  padding: 4px;
  border-radius: 50%;
  display: none;
}
.nav-search-clear:hover { color: var(--color-text-primary); background: var(--color-surface-hover); }
.nav-search.has-query .nav-search-clear { display: inline-flex; }

/* Live search results dropdown */
.search-results-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-overlay);
}
.search-results-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.search-result-item:hover,
.search-result-item.is-active { background: var(--color-surface-hover); }
.search-result-thumb {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  flex-shrink: 0;
  overflow: hidden;
}
.search-result-thumb img { width: 100%; height: 100%; object-fit: cover; }
.search-result-meta { display: flex; flex-direction: column; min-width: 0; }
.search-result-title { font-size: 0.9rem; font-weight: 600; color: var(--color-text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-result-cat { font-size: 0.78rem; color: var(--color-text-muted); }
.search-results-empty { padding: var(--space-5); text-align: center; color: var(--color-text-muted); font-size: 0.88rem; }
.search-results-footer {
  padding: var(--space-2) var(--space-4);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}
mark.search-highlight {
  background: var(--color-accent-soft);
  color: var(--color-accent-2);
  border-radius: 3px;
  padding: 0 2px;
}

/* Nav actions */
.nav-actions { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-overlay);
  padding: var(--space-5);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer a {
  display: block;
  padding: var(--space-4) 0;
  font-size: 1.05rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.mobile-drawer a.active { color: var(--color-accent); }