:root {
  --sidebar-width: 280px;
  --aside-width: 320px;
  --header-height: 64px;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  background-color: var(--bs-body-bg);
  border-bottom: 1px solid var(--bs-border-color);
  min-height: var(--header-height);
  z-index: 1030;
}

.search-wrapper {
  position: relative;
  max-width: 480px;
}

.search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bs-body-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: 0 0 .5rem .5rem;
  max-height: 60vh;
  overflow-y: auto;
  z-index: 1040;
  display: none;
}

.search-results.show {
  display: block;
}

.search-results a {
  display: block;
  padding: .5rem .75rem;
  color: var(--bs-body-color);
  text-decoration: none;
  border-bottom: 1px solid var(--bs-border-color-translucent);
}

.search-results a:hover,
.search-results a:focus {
  background-color: var(--bs-tertiary-bg);
}

.search-results .search-result-category {
  font-size: .75rem;
  color: var(--bs-secondary-color);
}

/* Layout */
.app-layout {
  display: flex;
  flex: 1;
  align-items: stretch;
}

.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  border-right: 1px solid var(--bs-border-color);
  background-color: var(--bs-body-bg);
  overflow-y: auto;
}

.sidebar-inner {
  padding: 1rem .75rem;
}

.sidebar-heading {
  text-transform: uppercase;
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--bs-secondary-color);
  margin: .75rem .5rem .25rem;
}

.sidebar-section + #categories-container,
.sidebar-section {
  margin-bottom: .5rem;
}

.category-block {
  margin-bottom: .25rem;
}

.category-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: .5rem;
  background: none;
  border: none;
  text-align: left;
  padding: .5rem .5rem;
  border-radius: .375rem;
  font-weight: 600;
  color: var(--bs-body-color);
}

.category-toggle:hover {
  background-color: var(--bs-tertiary-bg);
}

.category-toggle .bi-chevron-down {
  margin-left: auto;
  transition: transform .15s ease;
}

.category-toggle.collapsed .bi-chevron-down {
  transform: rotate(-90deg);
}

.tool-list {
  padding-left: .25rem;
}

.tool-list .nav-link {
  padding: .35rem .5rem .35rem 1.75rem;
  border-radius: .375rem;
  color: var(--bs-body-color);
  font-size: .925rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.tool-list .nav-link:hover {
  background-color: var(--bs-tertiary-bg);
}

.tool-list .nav-link.active {
  background-color: var(--bs-primary);
  color: #fff;
}

.app-main {
  flex: 1;
  min-width: 0;
  padding: 1.5rem;
}

.app-aside {
  width: var(--aside-width);
  flex-shrink: 0;
  border-left: 1px solid var(--bs-border-color);
  padding: 1.5rem 1rem;
}

/* Ads */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--bs-tertiary-bg);
  border: 1px dashed var(--bs-border-color);
  border-radius: .5rem;
  color: var(--bs-secondary-color);
  font-size: .85rem;
}

.ad-slot-300x600 {
  width: 300px;
  height: 600px;
  max-width: 100%;
}

.ad-slot-banner {
  min-height: 90px;
  width: 100%;
}

/* Home */
.home-hero {
  padding: 1rem 0 1.5rem;
}

.home-category-grid .category-card {
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.home-category-grid .card {
  height: 100%;
  transition: transform .15s ease, box-shadow .15s ease;
}

.home-category-grid .card:hover {
  transform: translateY(-2px);
  box-shadow: var(--bs-box-shadow);
}

/* Sidebar mobile */
.sidebar-backdrop {
  display: none;
}

@media (max-width: 991.98px) {
  .app-sidebar {
    position: fixed;
    top: var(--header-height);
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    transition: transform .2s ease;
    z-index: 1035;
    width: min(85vw, var(--sidebar-width));
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop.show {
    display: block;
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: rgba(0, 0, 0, .4);
    z-index: 1034;
  }
}

/* Tool page */
.tool-interface {
  border: 1px solid var(--bs-border-color);
}

.favorite-toggle.is-favorite i {
  color: var(--bs-warning);
}

.favorite-toggle.is-favorite i::before {
  content: "\f287"; /* bi-star-fill */
}

/* Word counter */
.wc-stats .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

/* JSON formatter */
#json-formatter textarea {
  font-family: var(--bs-font-monospace);
  font-size: .875rem;
}

/* Diff checker */
.diff-result {
  font-family: var(--bs-font-monospace);
  font-size: .85rem;
  max-height: 420px;
  overflow: auto;
  white-space: pre-wrap;
}

.diff-added { background-color: rgba(25, 135, 84, .15); }
.diff-removed { background-color: rgba(220, 53, 69, .15); }

/* File drop zone */
.file-drop {
  border: 2px dashed var(--bs-border-color);
  border-radius: .5rem;
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease;
}

.file-drop:hover,
.file-drop:focus-visible {
  border-color: var(--bs-primary);
  background-color: var(--bs-tertiary-bg);
}

.file-drop.drag-over {
  border-color: var(--bs-primary);
  background-color: var(--bs-tertiary-bg);
}

.file-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.file-list li {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem .5rem;
  border-bottom: 1px solid var(--bs-border-color-translucent);
  font-size: .9rem;
}

.tool-preview-img {
  max-width: 100%;
  max-height: 360px;
  border: 1px solid var(--bs-border-color);
  border-radius: .375rem;
}

.crop-selection {
  position: absolute;
  border: 2px dashed var(--bs-primary);
  background: rgba(13, 110, 253, .15);
  display: none;
  pointer-events: none;
}

.annotate-stage {
  position: relative;
  display: inline-block;
  cursor: crosshair;
}

/* Audio recorder */
.rec-dot {
  display: inline-block;
  width: .65rem;
  height: .65rem;
  border-radius: 50%;
  background-color: var(--bs-danger);
  animation: rec-pulse 1.2s ease-in-out infinite;
}

@keyframes rec-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .25; }
}

/* Contenteditable placeholder (used by remove-formatting) */
.editable-placeholder:empty:before {
  content: attr(data-placeholder);
  color: var(--bs-secondary-color);
}

/* Resume generator preview */
.resume-preview h5 {
  margin-top: 1rem;
  margin-bottom: .5rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  border-bottom: 1px solid #dee2e6;
  padding-bottom: .25rem;
}