/* ============================================================
   navbar.css — Sticky nav, search, badges, theme toggle, mobile
   ============================================================ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition);
}

.nav-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  min-height: var(--navbar-height);
  padding-inline: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Logo */
.nav-logo {
  font-family: var(--font-logo);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.035em;
  color: var(--color-text-primary);
  white-space: nowrap;
}
.nav-logo .logo-accent {
  font-weight: 300;
  background: var(--logo-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Search */
.nav-search {
  flex: 1;
  max-width: 420px;
  position: relative;
  display: flex;
  align-items: center;
}
.nav-search .search-icon {
  position: absolute;
  left: 0.85rem;
  width: 18px; height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 0.55rem 1rem 0.55rem 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
  font-size: 0.92rem;
  transition: border-color var(--transition), background var(--transition);
}
.search-input::placeholder { color: var(--color-text-muted); }
.search-input:focus {
  border-color: var(--color-primary);
  background: var(--color-bg-card);
  outline: none;
}

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  position: relative;
  padding-block: 4px;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-text-primary); }
.nav-links a.active { color: var(--color-text-primary); font-weight: 600; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 2px;
  background: var(--color-primary);
}

/* Action icons */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  transition: background var(--transition);
}
.icon-btn:hover { background: var(--color-bg-secondary); }
.theme-icon { display: inline-flex; }

.nav-badge {
  position: absolute;
  top: 1px;
  right: 1px;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  font-size: 0.64rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 17px;
  text-align: center;
  border-radius: var(--radius-pill);
  color: #fff;
  border: 2px solid var(--color-bg);
  box-sizing: content-box;
}
.cart-badge { background: var(--color-primary); }
.wish-badge { background: var(--color-accent); }

.nav-badge.pulse { animation: badgePulse 0.45s ease; }
@keyframes badgePulse {
  0%   { transform: scale(1); }
  45%  { transform: scale(1.45); }
  100% { transform: scale(1); }
}

/* Hamburger */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.nav-toggle:hover { background: var(--color-bg-secondary); }

/* ---------------- Responsive ---------------- */
@media (max-width: 768px) {
  .nav-inner { padding-inline: var(--space-md); gap: var(--space-md); }
  .nav-toggle { display: inline-flex; }

  .nav-links {
    position: absolute;
    top: var(--navbar-height);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-links.open { max-height: 320px; }
  .nav-links a { padding: var(--space-md) 0; border-bottom: 1px solid var(--color-border); }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a.active::after { display: none; }
}

@media (max-width: 540px) {
  .nav-search { display: none; }
}