/* Material Design 3 Web App Stylesheet */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Outfit', 'Roboto', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard),
              color var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard);
  -webkit-font-smoothing: antialiased;
}

/* Material Symbols Icon Helper */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 20px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  vertical-align: middle;
}

/* Buttons and Interactive Elements */
button {
  font-family: inherit;
  border: none;
  background: transparent;
  cursor: pointer;
  outline: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

/* MD3 Common Button Styles */
.btn-filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 10px 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-weight: 500;
  font-size: 14px;
  box-shadow: var(--md-sys-elevation-1);
}
.btn-filled:hover {
  box-shadow: var(--md-sys-elevation-2);
  filter: brightness(1.05);
}
.btn-filled:active {
  box-shadow: var(--md-sys-elevation-1);
  filter: brightness(0.95);
}

.btn-tonal {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  padding: 10px 20px;
  border-radius: var(--md-sys-shape-corner-full);
  font-weight: 500;
  font-size: 14px;
}
.btn-tonal:hover {
  filter: brightness(0.95);
}

.btn-outlined {
  border: 1px solid var(--md-sys-color-outline);
  color: var(--md-sys-color-primary);
  padding: 8px 18px;
  border-radius: var(--md-sys-shape-corner-full);
  font-weight: 500;
  font-size: 14px;
}
.btn-outlined:hover {
  background-color: rgba(0, 99, 155, 0.08);
}

.btn-text {
  color: var(--md-sys-color-primary);
  padding: 8px 14px;
  border-radius: var(--md-sys-shape-corner-full);
  font-weight: 500;
  font-size: 14px;
}
.btn-text:hover {
  background-color: rgba(0, 99, 155, 0.08);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:hover {
  background-color: rgba(0, 0, 0, 0.06);
  color: var(--md-sys-color-on-surface);
}
[data-theme="dark"] .icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

/* App Shell Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Top App Bar */
.top-app-bar {
  height: 64px;
  background-color: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-surface-container-high);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  flex-shrink: 0;
  z-index: 20;
}

.top-bar-start {
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  cursor: pointer;
}
.app-brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--md-sys-color-primary), var(--md-sys-color-tertiary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Top Bar Global Search Bar */
.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  padding: 8px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  width: 320px;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short);
}
.search-trigger-btn:hover {
  background-color: var(--md-sys-color-surface-container-highest);
  box-shadow: var(--md-sys-elevation-1);
}
.search-kbd-hint {
  margin-left: auto;
  font-size: 11px;
  background-color: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--md-sys-color-on-surface-variant);
}

.top-bar-end {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-surface-container);
  cursor: pointer;
}
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}
.user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
}

/* Main Workspace Body */
.workspace-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Navigation Drawer / Sidebar */
.nav-drawer {
  width: 260px;
  background-color: var(--md-sys-color-surface-container-low);
  border-right: 1px solid var(--md-sys-color-surface-container-high);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-emphasized);
  z-index: 10;
  overflow-y: auto;
}

.nav-drawer.collapsed {
  transform: translateX(-100%);
  position: absolute;
  height: 100%;
}

.nav-section {
  padding: 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: 4px;
  position: relative;
  transition: all var(--md-sys-motion-duration-short);
}
.nav-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}
.nav-item.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}
.nav-item-badge {
  margin-left: auto;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-surface-container-highest);
}

.nav-divider {
  height: 1px;
  background-color: var(--md-sys-color-surface-container-high);
  margin: 8px 12px;
}

.nav-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--md-sys-color-outline);
}

/* Folder Tree Items */
.folder-tree {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.folder-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: var(--md-sys-shape-corner-medium);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 13.5px;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short);
}
.folder-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}
.folder-item.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 500;
}
.folder-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.folder-actions {
  margin-left: auto;
  opacity: 0;
  display: flex;
  gap: 4px;
}
.folder-item:hover .folder-actions {
  opacity: 1;
}

/* Content Main View Area */
.main-content-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  background-color: var(--md-sys-color-background);
  position: relative;
  width: 100%;
}

.view-panel {
  width: 100%;
  height: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#editor-view {
  width: 100%;
  height: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
}


.view-header {
  padding: 24px 32px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.view-title-group h1 {
  font-size: 28px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
}
.view-subtitle {
  font-size: 14px;
  color: var(--md-sys-color-on-surface-variant);
  margin-top: 4px;
}

/* Extended Floating Action Button (FAB) */
.extended-fab {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 14px 20px;
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-2);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all var(--md-sys-motion-duration-short);
}
.extended-fab:hover {
  box-shadow: var(--md-sys-elevation-3);
  filter: brightness(0.97);
  transform: translateY(-2px);
}

/* Note Cards Grid */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  padding: 16px 32px 48px;
}

/* MD3 Note Card */
.note-card {
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 20px;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard);
}
.note-card:hover {
  background-color: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-outline-variant);
  box-shadow: var(--md-sys-elevation-2);
  transform: translateY(-2px);
}

.note-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}
.note-card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.note-card-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}
.note-card-pin {
  color: var(--md-sys-color-outline);
  cursor: pointer;
}
.note-card-pin.pinned {
  color: var(--md-sys-color-primary);
}
.note-card-delete {
  color: var(--md-sys-color-outline);
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.15s ease;
}
.note-card-delete:hover {
  opacity: 1;
  color: var(--md-sys-color-error);
  background-color: rgba(186, 26, 26, 0.08);
}

.note-card-snippet {
  font-size: 13.5px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.note-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 12px;
  color: var(--md-sys-color-outline);
}
.note-card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--md-sys-shape-corner-small);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
}
.chip-folder {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 20px;
  color: var(--md-sys-color-outline);
  text-align: center;
}
.empty-state-icon {
  font-size: 64px;
  margin-bottom: 16px;
  color: var(--md-sys-color-outline-variant);
}
.empty-state h3 {
  font-size: 18px;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 8px;
}
.empty-state p {
  font-size: 14px;
  max-width: 360px;
  margin-bottom: 20px;
}

/* Sticky Notes Board (Google Keep Style) */
.sticky-board-container {
  padding: 16px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Quick Sticky Creator */
.sticky-creator-card {
  max-width: 580px;
  width: 100%;
  margin: 0 auto;
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-2);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--md-sys-color-surface-container-highest);
}
.sticky-creator-input {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 15px;
  font-family: inherit;
  color: var(--md-sys-color-on-surface);
  resize: vertical;
  min-height: 48px;
  outline: none;
  line-height: 1.5;
}
.sticky-creator-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid var(--md-sys-color-surface-container-high);
}

.color-dots-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}
.color-dot-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease;
}
.color-dot-btn:hover {
  transform: scale(1.2);
}
.color-dot-btn.active {
  border-color: var(--md-sys-color-on-surface);
  box-shadow: 0 0 0 2px var(--md-sys-color-surface);
}

/* Sticky Notes Grid */
.sticky-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.sticky-card {
  border-radius: var(--md-sys-shape-corner-large);
  padding: 18px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--md-sys-elevation-1);
  transition: all var(--md-sys-motion-duration-short);
  border: 1.5px solid transparent;
}
.sticky-card:hover {
  box-shadow: var(--md-sys-elevation-3);
  transform: translateY(-3px);
}

/* Dynamic Tonal Colors for Sticky Notes */
.sticky-card.color-yellow { background-color: var(--sticky-yellow); border-color: var(--sticky-yellow-border); color: var(--sticky-yellow-text); }
.sticky-card.color-cyan   { background-color: var(--sticky-cyan);   border-color: var(--sticky-cyan-border);   color: var(--sticky-cyan-text); }
.sticky-card.color-purple { background-color: var(--sticky-purple); border-color: var(--sticky-purple-border); color: var(--sticky-purple-text); }
.sticky-card.color-green  { background-color: var(--sticky-green);  border-color: var(--sticky-green-border);  color: var(--sticky-green-text); }
.sticky-card.color-pink   { background-color: var(--sticky-pink);   border-color: var(--sticky-pink-border);   color: var(--sticky-pink-text); }
.sticky-card.color-orange { background-color: var(--sticky-orange); border-color: var(--sticky-orange-border); color: var(--sticky-orange-text); }

.sticky-card-body {
  font-size: 14.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  outline: none;
  min-height: 70px;
}

.sticky-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  opacity: 0.7;
  padding-top: 8px;
  transition: opacity 0.2s ease;
}
.sticky-card:hover .sticky-card-footer {
  opacity: 1;
}

/* Global Spotlight Search Modal (Ctrl+K) */
.spotlight-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--md-sys-color-scrim);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
}
.spotlight-backdrop.open {
  display: flex;
}

.spotlight-card {
  width: 90%;
  max-width: 640px;
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-4);
  border: 1px solid var(--md-sys-color-surface-container-highest);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: spotlightPop 0.2s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes spotlightPop {
  from { opacity: 0; transform: scale(0.96) translateY(-10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.spotlight-header {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--md-sys-color-surface-container-high);
  gap: 12px;
}
.spotlight-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 16px;
  font-family: inherit;
  color: var(--md-sys-color-on-surface);
  outline: none;
}

.spotlight-filter-bar {
  display: flex;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--md-sys-color-surface-container-low);
  border-bottom: 1px solid var(--md-sys-color-surface-container-high);
}
.filter-chip {
  padding: 4px 12px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  border: 1px solid var(--md-sys-color-outline-variant);
}
.filter-chip.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border-color: transparent;
}

.spotlight-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 8px;
}
.spotlight-result-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  cursor: pointer;
  transition: background-color 0.15s ease;
}
.spotlight-result-item:hover,
.spotlight-result-item.selected {
  background-color: var(--md-sys-color-surface-container-highest);
}
.result-type-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.result-info {
  flex: 1;
}
.result-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 3px;
}
.result-snippet {
  font-size: 13px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.4;
}
.result-highlight {
  background-color: rgba(255, 235, 59, 0.4);
  font-weight: 600;
  padding: 0 2px;
  border-radius: 2px;
}
.spotlight-footer {
  padding: 8px 20px;
  font-size: 12px;
  color: var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-low);
  border-top: 1px solid var(--md-sys-color-surface-container-high);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Modals & Dialogs */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--md-sys-color-scrim);
  backdrop-filter: blur(2px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-backdrop.open,
.modal-backdrop.active {
  display: flex;
}
.modal-card {
  width: 100%;
  max-width: 440px;
  background-color: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-3);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
}

/* Form Inputs */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.input-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--md-sys-color-on-surface-variant);
}
.text-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}
.text-input:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

/* MD3 Toast / Snackbar */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background-color: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 12px 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 14px;
  box-shadow: var(--md-sys-elevation-3);
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: toastFadeIn 0.25s ease-out;
}

@keyframes toastFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Icon Selector Grid for Folder Modal */
.icon-selector-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-top: 4px;
}
.folder-icon-btn {
  width: 100%;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-medium);
  border: 1.5px solid var(--md-sys-color-surface-container-highest);
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
}
.folder-icon-btn:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border-color: var(--md-sys-color-outline-variant);
}
.folder-icon-btn.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}
.folder-icon-btn .material-symbols-outlined {
  font-size: 20px;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .search-trigger-btn { width: 180px; }
  .search-kbd-hint { display: none; }
  .view-header { padding: 16px 20px; }
  .notes-grid { padding: 12px 20px; }
  .sticky-board-container { padding: 12px 20px; }
}