/* ── Compact top toolbar ────────────────────────────────────────────────────── */
.top-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: var(--background);
  flex-shrink: 0;
}

/* Mobile Hamburger Menu Button */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--t-fast) var(--ease);
}

.mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-strong);
}

.mobile-menu-btn svg {
  width: 18px;
  height: 18px;
}

/* Breadcrumb */
.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  flex-shrink: 0;
}

.breadcrumb-root {
  color: var(--muted);
}

.breadcrumb-sep {
  color: var(--border-strong);
  font-size: 11px;
}

.breadcrumb-current {
  color: var(--text-secondary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-link {
  color: var(--muted);
  cursor: pointer;
  transition: color var(--t-fast) var(--ease);
}

.breadcrumb-link:hover {
  color: var(--text-secondary);
}

/* Search Container & Bar */
.header-search-container {
  position: relative;
  margin-left: 12px;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--background-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  width: 240px;
  transition: border-color var(--t-fast) var(--ease), width var(--t-med) var(--ease);
  cursor: text;
}

.header-search:focus-within {
  border-color: var(--purple-strong);
  width: 300px;
}

.search-input-icon {
  width: 13px;
  height: 13px;
  color: var(--muted);
  flex-shrink: 0;
}

.header-search:focus-within .search-input-icon {
  color: var(--purple-strong);
}

.header-search input {
  border: none;
  background: none;
  outline: none;
  color: var(--text);
  font-size: 12px;
  width: 100%;
  font-family: var(--font-body);
}

.header-search input::placeholder {
  color: var(--muted);
}

.search-clear-btn {
  background: none;
  border: none;
  color: var(--muted);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.search-clear-btn:hover {
  color: var(--text);
  background: var(--card-hover);
}

.search-clear-btn svg {
  width: 11px;
  height: 11px;
}

.header-search-kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 4px;
  line-height: 1.4;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-search:focus-within .header-search-kbd {
  display: none;
}

/* Search Popdown Menu */
.search-popdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  width: 460px;
  max-width: calc(100vw - 32px);
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: none;
  overflow: hidden;
  z-index: 1000;
  animation: popdownFadeIn var(--t-fast) var(--ease);
}

@keyframes popdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-popdown[hidden] {
  display: none;
}

/* Filter Tab Bar */
.search-popdown-filter-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 10px;
  background: var(--background-elevated);
  border-bottom: 1px solid var(--border);
}

.filter-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.filter-tab:hover {
  background: var(--card-hover);
  color: var(--text-secondary);
}

.filter-tab.active {
  background: var(--card);
  color: var(--purple-strong);
  border-color: var(--border);
  font-weight: 600;
}

/* Results Area */
.search-popdown-results {
  max-height: 400px;
  overflow-y: auto;
  padding: 6px;
}

.search-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 4px 10px;
  margin-top: 6px;
}

.search-group-header:first-child {
  margin-top: 0;
}

.search-group-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.search-group-label svg {
  width: 13px;
  height: 13px;
  color: var(--muted);
}

.search-group-count {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted);
  background: var(--background-elevated);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
}

.search-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  position: relative;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
  user-select: none;
  margin-bottom: 2px;
}

.search-item:hover,
.search-item.is-selected {
  background: var(--card-hover);
}

.search-item:hover::before,
.search-item.is-selected::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 3px;
  border-radius: 2px;
  background: var(--purple-strong);
}

.search-item-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-item-icon.tab-icon-box {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--background-elevated);
  color: var(--purple-strong);
  border: 1px solid var(--border);
}

.search-item-icon.tab-icon-box svg {
  width: 18px;
  height: 18px;
}

.search-item-icon.media-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--background-elevated);
  border: 1px solid var(--border-strong);
  box-shadow: none;
}

.search-item-icon.media-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-item-info {
  flex: 1;
  min-width: 0;
}

.search-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-item:hover .search-item-title,
.search-item.is-selected .search-item-title {
  color: var(--text);
}

.search-item-sub {
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.search-item-badge {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted);
  background: var(--background-elevated);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.search-item-action {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease);
  flex-shrink: 0;
}

.search-item:hover .search-item-action,
.search-item.is-selected .search-item-action {
  opacity: 0.8;
  color: var(--purple-strong);
}

.search-no-results {
  padding: 20px 12px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.search-no-results svg {
  width: 20px;
  height: 20px;
  opacity: 0.5;
}

.search-popdown-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--background-elevated);
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--muted);
}

.footer-hint {
  display: flex;
  align-items: center;
  gap: 3px;
}

.search-popdown-footer kbd {
  font-family: var(--font-mono);
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 9px;
  color: var(--muted);
}

/* Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.header-notif {
  position: relative;
}

.header-icon-btn {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.header-icon-btn:hover {
  background: var(--card);
  border-color: var(--border);
  color: var(--text-secondary);
}

.header-icon-btn svg {
  width: 14px;
  height: 14px;
}

.notif-badge {
  position: absolute;
  top: -5px;
  right: -5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--purple, #6366f1);
  color: #fff;
  font-size: 8px;
  font-weight: 700;
  line-height: 13px;
  text-align: center;
  border: 2px solid var(--background);
  box-sizing: content-box;
  pointer-events: none;
}

.notif-tray {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 320px;
  max-width: calc(100vw - 28px);
  background: var(--card, #1b1d22);
  border: 1px solid var(--border, #2a2d34);
  border-radius: var(--radius, 10px);
  box-shadow: none;
  overflow: hidden;
  z-index: 100;
  transform-origin: top right;
  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transition: opacity var(--t-fast, 0.16s) var(--ease, ease), transform var(--t-fast, 0.16s) var(--ease, ease);
}

.notif-tray.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.notif-tray[hidden] {
  display: none;
}

.notif-tray-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border, #2a2d34);
}

.notif-tray-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text, #e8e8ea);
}

.notif-tray-clear {
  background: none;
  border: none;
  color: var(--purple, #6366f1);
  font-size: 11px;
  cursor: pointer;
  font-family: var(--font-body, inherit);
  padding: 2px 4px;
  border-radius: 4px;
  transition: background var(--t-fast, 0.16s) var(--ease, ease);
}

.notif-tray-clear:hover {
  background: var(--background-elevated, #23262d);
}

.notif-list {
  max-height: 340px;
  overflow-y: auto;
}

.notif-item {
  display: flex;
  gap: 10px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border, #2a2d34);
  transition: background var(--t-fast, 0.16s) var(--ease, ease);
  cursor: default;
}

.notif-item:last-child {
  border-bottom: none;
}

.notif-item:hover {
  background: var(--background-elevated, #23262d);
}

.notif-item.is-unread {
  background: color-mix(in srgb, var(--purple, #6366f1) 10%, transparent);
}

.notif-item.is-unread:hover {
  background: color-mix(in srgb, var(--purple, #6366f1) 16%, transparent);
}

.notif-item-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  background: var(--background-elevated, #23262d);
}

.notif-item-body {
  min-width: 0;
  flex: 1;
}

.notif-item-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text, #e8e8ea);
  display: flex;
  align-items: center;
  gap: 6px;
}

.notif-item.is-unread .notif-item-title::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple, #6366f1);
  flex-shrink: 0;
}

.notif-item-text {
  font-size: 11.5px;
  color: var(--muted, #9a9da5);
  margin-top: 2px;
  line-height: 1.4;
}

.notif-item-time {
  font-size: 10px;
  color: var(--text-secondary, #c4c6cc);
  margin-top: 4px;
}

.notif-tray-foot {
  padding: 10px 14px;
  text-align: center;
  font-size: 11px;
  color: var(--muted, #9a9da5);
  border-top: 1px solid var(--border, #2a2d34);
}

/* ── Responsive Layout (< 1100px) ───────────────────────────────────────── */
@media (max-width: 1100px) {
  .top-header {
    padding: 0 12px;
    gap: 8px;
  }

  .mobile-menu-btn {
    display: flex !important;
  }

  .header-breadcrumb {
    display: none !important;
  }

  .header-search-container {
    margin-left: 0;
    flex: 1;
  }

  .header-search {
    width: 100% !important;
  }

  .header-search:focus-within {
    width: 100% !important;
  }

  .header-search-kbd {
    display: none !important;
  }

  .search-popdown {
    left: -40px;
    width: calc(100vw - 24px) !important;
  }
}