/* =============================================================================
   AIAssetsHub — Header CSS
   ============================================================================= */

/* ─── Announcement Bar ────────────────────────────────────────────────────── */
.announcement-bar {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  padding: 0.55rem 1rem;
  font-size: 0.825rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
  z-index: 1001;
}

.announcement-bar a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ─── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(8, 8, 16, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  border-bottom-color: var(--border-light);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1.5rem;
}

/* ─── Logo ────────────────────────────────────────────────────────────────── */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

/* ─── Primary Nav ─────────────────────────────────────────────────────────── */
.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.primary-nav a {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a.active {
  color: var(--text);
  background: var(--surface-2);
}

.primary-nav a.active {
  color: var(--primary);
}

/* ─── Header Right ────────────────────────────────────────────────────────── */
.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Search button */
.header-search-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  min-width: 140px;
}

.header-search-btn:hover {
  border-color: var(--border-light);
  color: var(--text);
}

.header-search-btn kbd {
  margin-left: auto;
  padding: 0.1rem 0.35rem;
  background: var(--surface-3);
  border-radius: 4px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* Icon buttons (cart, wishlist, account) */
.header-icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.header-icon-btn:hover {
  color: var(--text);
  border-color: var(--border-light);
  background: var(--surface-3);
}

.header-icon-btn .badge-count {
  position: absolute;
  top: -5px;
  right: -5px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background: var(--primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── Account Dropdown ────────────────────────────────────────────────────── */
.account-dropdown {
  position: relative;
}

.account-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.875rem 0.4rem 0.5rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  color: var(--text);
}

.account-trigger:hover { border-color: var(--border-light); }

.account-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  color: #fff;
  flex-shrink: 0;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: var(--transition-lg);
}

.account-dropdown:hover .dropdown-menu,
.account-dropdown.open .dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.dropdown-menu a,
.dropdown-menu button {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: var(--transition);
  width: 100%;
  text-align: left;
}

.dropdown-menu a:hover,
.dropdown-menu button:hover {
  background: var(--surface-3);
  color: var(--text);
}

.dropdown-menu .divider-line {
  border-top: 1px solid var(--border);
  margin: 0.4rem 0;
}

/* ─── Search Overlay ──────────────────────────────────────────────────────── */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 15vh;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.search-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.search-overlay-box {
  width: 100%;
  max-width: 660px;
  padding: 0 1.5rem;
}

.search-overlay-input {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: 0 0 40px rgba(124,58,237,0.3);
}

.search-overlay-input input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: 1.1rem;
  color: var(--text);
  font-family: var(--font);
}

.search-overlay-input input::placeholder { color: var(--text-dim); }

.search-results-dropdown {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-top: 0.5rem;
  max-height: 400px;
  overflow-y: auto;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  text-decoration: none;
  color: var(--text);
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--surface-2); }

.search-result-item img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}

/* ─── Mobile Header ───────────────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: var(--transition-lg);
}

.mobile-menu-btn.open .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.open .hamburger-line:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg);
  z-index: 999;
  padding: 1rem;
  transform: translateX(-100%);
  transition: var(--transition-lg);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.mobile-nav a:hover { color: var(--text); background: var(--surface-2); }

@media (max-width: 992px) {
  .primary-nav { display: none; }
  .header-search-btn { display: none; }
  .mobile-menu-btn { display: flex; }
}

@media (max-width: 576px) {
  .logo-text { display: none; }
}