/**
 * ScholarVault Components CSS
 * Cards, filters, detail modals, workbench, query builder, timer, and heatmaps.
 */

/* =========================================================================
   Buttons, Badges & Pills
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent-primary-gradient);
  color: white;
  box-shadow: 0 4px 14px var(--glow-primary);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 20px var(--glow-primary);
}

.btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-glass);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-glass-hover);
}

.btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-main);
  background: var(--bg-surface-hover);
  border-color: var(--border-glass);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-free {
  background: rgba(16, 185, 129, 0.14);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-freemium {
  background: rgba(99, 102, 241, 0.14);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-paid {
  background: rgba(245, 158, 11, 0.14);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-open-source {
  background: rgba(6, 182, 212, 0.14);
  color: #67e8f9;
  border: 1px solid rgba(6, 182, 212, 0.25);
}

/* =========================================================================
   Directory Filter Bar
   ========================================================================= */
.directory-header {
  margin-bottom: 1.5rem;
}

.view-title-group {
  margin-bottom: 1.25rem;
}

.view-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.view-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Primary Category Chips */
.category-chips-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
}

.category-chips-bar::-webkit-scrollbar {
  height: 4px;
}
.category-chips-bar::-webkit-scrollbar-thumb {
  background: var(--border-glass);
  border-radius: 4px;
}

.chip-btn {
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.chip-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-hover);
}

.chip-btn.active {
  color: white;
  background: var(--accent-primary-gradient);
  border-color: transparent;
  box-shadow: 0 4px 14px var(--glow-primary);
  font-weight: 600;
}

.chip-count {
  font-size: 0.7rem;
  opacity: 0.8;
  font-family: var(--font-mono);
}

/* Secondary Filter Bar */
.secondary-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-subtle);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  outline: none;
  cursor: pointer;
}

.filter-select option {
  background: var(--bg-app);
  color: var(--text-main);
}

.stack-toggle-btn {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  color: var(--accent-amber);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.stack-toggle-btn.active {
  background: rgba(245, 158, 11, 0.18);
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.3);
}

/* =========================================================================
   Tools Grid & Cards
   ========================================================================= */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  content-visibility: auto;
  contain-intrinsic-size: 0 240px;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35), 0 0 18px var(--glow-primary);
}

.tool-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.tool-identity {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tool-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.tool-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.tool-rating {
  font-size: 0.78rem;
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.15rem;
}

.star-bookmark-btn {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-subtle);
  transition: all var(--transition-fast);
  padding: 0.2rem;
}

.star-bookmark-btn:hover {
  transform: scale(1.25);
  color: var(--accent-amber);
}

.star-bookmark-btn.bookmarked {
  color: var(--accent-amber);
  filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.5));
}

.tool-tagline {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-secondary);
  line-height: 1.3;
}

.tool-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Pro Tip callout */
.tool-protip {
  background: var(--bg-surface);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  padding: 0.55rem 0.75rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.protip-label {
  font-weight: 700;
  color: var(--accent-primary);
  margin-right: 0.35rem;
}

.btn-copy-protip {
  background: transparent;
  border: none;
  color: var(--text-subtle);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
  opacity: 0.7;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-copy-protip:hover {
  opacity: 1;
  color: var(--text-main);
  background: var(--border-glass);
  transform: scale(1.1);
}


/* Tool Footer */
.tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  gap: 0.5rem;
}

.tool-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* =========================================================================
   Detail Modal Dialog
   ========================================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: grid;
  place-items: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 1.5rem;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 30px var(--glow-primary);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-card {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--text-subtle);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--text-main);
}

/* =========================================================================
   Daily Hub & Deep Research Command Center
   ========================================================================= */
.hub-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .hub-grid {
    grid-template-columns: 1fr;
  }
}

.hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Research Directive Input */
.directive-box {
  display: flex;
  gap: 0.5rem;
}

.directive-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
}

.directive-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 12px var(--glow-primary);
}

/* Daily Timer Widget */
.timer-widget {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
}

.timer-ring-container {
  position: relative;
  width: 170px;
  height: 170px;
  margin-bottom: 1rem;
}

.timer-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.timer-bg-circle {
  fill: none;
  stroke: var(--border-subtle);
  stroke-width: 7;
}

.timer-bar-circle {
  fill: none;
  stroke: var(--accent-primary);
  stroke-width: 7;
  stroke-linecap: round;
  stroke-dasharray: 471;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.4s ease;
  filter: drop-shadow(0 0 8px var(--glow-primary));
}

.timer-display-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.timer-time-text {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-main);
}

.timer-phase-text {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--accent-secondary);
  font-weight: 600;
  letter-spacing: 0.08em;
}

/* GitHub-Style Contribution Heatmap Matrix */
.heatmap-container {
  overflow-x: auto;
  padding: 0.5rem 0;
}

.heatmap-grid {
  display: grid;
  grid-template-rows: repeat(7, 12px);
  grid-auto-flow: column;
  gap: 4px;
}

.heatmap-cell {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.heatmap-cell[data-level="1"] { background: rgba(99, 102, 241, 0.3); border-color: rgba(99, 102, 241, 0.4); }
.heatmap-cell[data-level="2"] { background: rgba(99, 102, 241, 0.55); border-color: rgba(99, 102, 241, 0.65); }
.heatmap-cell[data-level="3"] { background: rgba(99, 102, 241, 0.8); border-color: rgba(99, 102, 241, 0.9); }
.heatmap-cell[data-level="4"] { background: #6366f1; box-shadow: 0 0 6px var(--glow-primary); }

/* Quick Launch Dock */
.quick-dock {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.quick-launch-chip {
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.quick-launch-chip:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

/* =========================================================================
   Research Workbench & Split Markdown Notebook
   ========================================================================= */
.workbench-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  height: calc(100vh - 160px);
}

@media (max-width: 900px) {
  .workbench-layout {
    grid-template-columns: 1fr;
    height: auto;
  }
}

.editor-pane, .preview-pane {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pane-toolbar {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.pane-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.toolbar-buttons {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tb-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tb-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface-hover);
  border-color: var(--border-glass);
}

.markdown-textarea {
  flex: 1;
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  padding: 1.25rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  resize: none;
}

.preview-content {
  flex: 1;
  padding: 1.25rem;
  overflow-y: auto;
  color: var(--text-main);
  line-height: 1.65;
}

.preview-content h1, .preview-content h2, .preview-content h3 {
  font-family: var(--font-display);
  margin: 1rem 0 0.5rem 0;
}
.preview-content h1 { font-size: 1.5rem; border-bottom: 1px solid var(--border-subtle); padding-bottom: 0.3rem; }
.preview-content h2 { font-size: 1.25rem; }
.preview-content p { margin-bottom: 0.8rem; }
.preview-content ul, .preview-content ol { margin-left: 1.5rem; margin-bottom: 0.8rem; }
.preview-content code { font-family: var(--font-mono); background: var(--bg-surface-active); padding: 0.15rem 0.35rem; border-radius: 4px; font-size: 0.85em; }
.preview-content blockquote { border-left: 3px solid var(--accent-primary); padding-left: 0.85rem; color: var(--text-muted); margin-bottom: 0.8rem; }

/* =========================================================================
   Citation Generator & Query Builder
   ========================================================================= */
.citation-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.citation-format-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.citation-tab {
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.citation-tab.active {
  background: var(--accent-primary);
  color: white;
  border-color: transparent;
}

.citation-output {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Boolean Query Builder Blocks */
.query-builder-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 640px) {
  .query-builder-form {
    grid-template-columns: 1fr;
  }
}

.query-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.query-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.query-input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  outline: none;
}

.query-input:focus {
  border-color: var(--border-focus);
}

.generated-query-card {
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.query-string-code {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--accent-cyan);
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border-glass);
  word-break: break-word;
}

.query-launch-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* =========================================================================
   Toast Notifications
   ========================================================================= */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-surface-active);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  animation: slide-toast 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slide-toast {
  from { opacity: 0; transform: translateY(12px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* =========================================================================
   Command Palette (Cmd+K / Spotlight)
   ========================================================================= */
.command-palette-card {
  width: 90%;
  max-width: 640px;
  background: var(--bg-surface-active);
  border: 1px solid var(--border-glass-hover);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.6), 0 0 40px var(--glow-primary);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: command-pop 0.22s var(--ease-spring);
}

@keyframes command-pop {
  from { opacity: 0; transform: scale(0.94) translateY(-10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.command-palette-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.15);
}

.command-search-icon {
  font-size: 1.25rem;
  color: var(--accent-primary);
}

.command-palette-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 500;
  outline: none;
}

.command-palette-input::placeholder {
  color: var(--text-subtle);
}

.command-esc-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: var(--border-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.command-palette-body {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.command-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-subtle);
  font-weight: 700;
  padding: 0.5rem 0.75rem 0.25rem 0.75rem;
}

.command-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: transparent;
  border: 1px solid transparent;
}

.command-item:hover, .command-item.selected {
  background: var(--bg-surface);
  border-color: var(--border-glass);
  transform: translateX(4px);
}

.command-item-left {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.command-item-icon {
  font-size: 1.15rem;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--badge-bg);
}

.command-item-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-main);
}

.command-item-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.command-item-meta {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  background: var(--border-subtle);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.command-palette-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  background: rgba(0, 0, 0, 0.2);
  font-size: 0.75rem;
  color: var(--text-subtle);
}

/* =========================================================================
   Ambient Study Audio Dock (Daily Hub)
   ========================================================================= */
.ambient-sound-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.ambient-sound-card:hover {
  border-color: var(--border-glass-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.ambient-sound-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.sound-wave-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.sound-bar {
  width: 3px;
  height: 4px;
  background: var(--accent-secondary);
  border-radius: 2px;
  transition: height 0.2s ease;
}

.ambient-playing .sound-bar:nth-child(1) { animation: wave 0.8s infinite ease-in-out; }
.ambient-playing .sound-bar:nth-child(2) { animation: wave 1.1s infinite 0.15s ease-in-out; }
.ambient-playing .sound-bar:nth-child(3) { animation: wave 0.9s infinite 0.3s ease-in-out; }
.ambient-playing .sound-bar:nth-child(4) { animation: wave 1.2s infinite 0.2s ease-in-out; }
.ambient-playing .sound-bar:nth-child(5) { animation: wave 0.7s infinite 0.4s ease-in-out; }

@keyframes wave {
  0%, 100% { height: 4px; }
  50% { height: 18px; }
}

.ambient-presets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.ambient-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.7rem 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.ambient-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-glass);
}

.ambient-btn.active {
  background: var(--bg-surface-active);
  border-color: var(--accent-secondary);
  color: var(--text-main);
  box-shadow: 0 0 14px var(--glow-cyan);
}

.ambient-volume-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-subtle);
}

.ambient-volume-slider {
  flex: 1;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--border-subtle);
  outline: none;
}

.ambient-volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-secondary);
  cursor: pointer;
  box-shadow: 0 0 8px var(--glow-cyan);
}

/* =========================================================================
   Model Context Protocol (MCP) Studio & Configurator
   ========================================================================= */
.mcp-studio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 1.5rem;
  backdrop-filter: blur(20px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.mcp-servers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  margin: 1.1rem 0;
}

.mcp-server-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mcp-server-checkbox-label:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.mcp-server-checkbox-label input[type="checkbox"] {
  accent-color: var(--accent-primary);
  width: 16px;
  height: 16px;
  margin-top: 2px;
}

.mcp-server-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.mcp-server-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.mcp-server-desc {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.mcp-output-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px dashed var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-secondary);
  overflow-x: auto;
  max-height: 280px;
  white-space: pre;
}

/* Presets Container & Pills */
.mcp-presets-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.6rem;
}

.mcp-preset-pill {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mcp-preset-pill:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.mcp-preset-pill.active {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.25);
}

.preset-icon {
  font-size: 1.25rem;
}

.preset-details strong {
  display: block;
  font-size: 0.82rem;
  color: var(--text-main);
  font-weight: 600;
}

.preset-details small {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.mcp-preset-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mcp-preset-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-glass);
}

/* Format Switcher Tabs */
.mcp-format-tabs {
  display: flex;
  gap: 0.4rem;
  background: var(--bg-surface);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.mcp-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.mcp-tab:hover {
  color: var(--text-main);
}

.mcp-tab.active {
  background: var(--bg-card);
  color: var(--accent-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  font-weight: 600;
}

/* MCP Guide Accordion */
.mcp-guide-accordion {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.mcp-guide-accordion[open] {
  border-color: var(--border-glass);
  background: var(--bg-card);
}

.mcp-guide-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
}

.mcp-guide-summary::-webkit-details-marker {
  display: none;
}

.mcp-guide-chevron {
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.mcp-guide-accordion[open] .mcp-guide-chevron {
  transform: rotate(180deg);
}

.mcp-guide-body {
  padding: 0.75rem 1rem 1rem 1rem;
  border-top: 1px solid var(--border-subtle);
}

.mcp-guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.mcp-guide-item h4 {
  font-size: 0.84rem;
  color: var(--accent-secondary);
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.mcp-guide-item p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.mcp-tag-badge {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.15rem 0.4rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-subtle);
  font-family: var(--font-mono);
  margin-left: 0.35rem;
}