/* =============================================================
   DEEP - ChatGPT/Claude Inspired Dark Theme
   Clean, professional, tool-like interface
   ============================================================= */

/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* =============================================================
   Design System Variables
   ============================================================= */

:root {
  /* Dark theme colors */
  --deep-bg: #212121;
  --deep-sidebar: #171717;
  --deep-surface: #2F2F2F;
  --deep-input-bar: #2F2F2F;

  /* Text hierarchy */
  --text-primary: #ECECEC;
  --text-secondary: #8E8E8E;
  --text-muted: #6B6B6B;

  /* Borders - subtle */
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Interactive */
  --interactive-hover: rgba(255, 255, 255, 0.05);
  --interactive-active: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 15px;
  --font-size-sm: 13px;
  --font-size-xs: 11px;
  --font-size-lg: 18px;
  --line-height: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;

  /* Layout */
  --sidebar-width: 260px;
  --content-max-width: 768px;
  --input-bar-height: 72px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-medium: 200ms ease;
  --transition-slow: 300ms ease;
}

/* =============================================================
   Base Styles
   ============================================================= */

.deep-app {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
  background-color: var(--deep-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Minimal scrollbar */
.deep-app ::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.deep-app ::-webkit-scrollbar-track {
  background: transparent;
}

.deep-app ::-webkit-scrollbar-thumb {
  background-color: var(--border-subtle);
  border-radius: 3px;
}

.deep-app ::-webkit-scrollbar-thumb:hover {
  background-color: var(--border-hover);
}

/* =============================================================
   App Shell - Sidebar + Main Layout
   ============================================================= */

.deep-shell {
  display: flex;
  min-height: 100vh;
  background-color: var(--deep-bg);
}

/* =============================================================
   Sidebar
   ============================================================= */

.deep-sidebar {
  width: var(--sidebar-width);
  background-color: var(--deep-sidebar);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 40;
  transition: transform var(--transition-slow);
}

.deep-sidebar.collapsed {
  transform: translateX(calc(var(--sidebar-width) * -1));
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
}

.sidebar-logo {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.sidebar-toggle {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

/* Expand button - visible when sidebar is collapsed */
.sidebar-expand-btn {
  position: fixed;
  left: var(--space-md);
  top: var(--space-md);
  width: 36px;
  height: 36px;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  z-index: 50;
  transition: all var(--transition-fast);
}

.sidebar-expand-btn:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.sidebar-expand-btn.visible {
  display: flex;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md) 0;
}

.sidebar-section {
  padding: 0 var(--space-md);
  margin-bottom: var(--space-md);
}

.new-topic-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.new-topic-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--interactive-hover);
}

/* Topic List */
.topic-list {
  display: flex;
  flex-direction: column;
}

.sidebar-topic-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}

.sidebar-topic-item:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

.sidebar-topic-item.active {
  background: var(--interactive-active);
  color: var(--text-primary);
  border-left-color: var(--text-primary);
}

.sidebar-topic-item .topic-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-topic-item .topic-meta {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--space-md) var(--space-lg);
}

/* =============================================================
   Main Content Area
   ============================================================= */

.deep-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-slow);
}

.deep-sidebar.collapsed ~ .deep-main {
  margin-left: 0;
}

.deep-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* =============================================================
   Content Header
   ============================================================= */

.content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

.mobile-menu-btn:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

.content-header h1 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* =============================================================
   Content Tabs
   ============================================================= */

.content-tabs {
  display: flex;
  gap: var(--space-xs);
}

.content-tabs .tab {
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.content-tabs .tab:hover {
  color: var(--text-primary);
  background: var(--interactive-hover);
}

.content-tabs .tab.active {
  color: var(--text-primary);
  background: var(--interactive-active);
}

/* =============================================================
   Content Area (Scrollable)
   ============================================================= */

.content-area {
  flex: 1;
  overflow-y: auto;
  padding-bottom: var(--input-bar-height);
}

.tab-panel {
  animation: fadeIn 200ms ease;
}

.tab-panel.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* =============================================================
   Entries Grid - Floating Bubble Cards
   ============================================================= */

.entries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
}

.entry-card {
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition-fast);
  animation: slideIn 300ms ease;
}

.entry-card:hover {
  border-color: var(--border-hover);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.card-header time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.entry-type-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--text-muted);
}

.entry-type-badge svg {
  width: 16px;
  height: 16px;
}

.card-content {
  color: var(--text-primary);
}

.entry-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.entry-audio {
  width: 100%;
  height: 40px;
  margin-bottom: var(--space-sm);
}

.entry-audio::-webkit-media-controls-panel {
  background: var(--deep-bg);
}

.entry-text {
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

.card-distillation {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border-subtle);
}

.distillation-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-distillation ul {
  margin: 0;
  padding-left: var(--space-md);
}

.card-distillation li {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

/* =============================================================
   Patterns Grid - Deep Dive Tab
   ============================================================= */

.patterns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
}

.pattern-card {
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
  animation: slideIn 300ms ease;
}

.pattern-card:hover {
  border-color: var(--border-hover);
}

.pattern-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.pattern-icon {
  font-size: var(--font-size-lg);
}

.pattern-type {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.pattern-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height);
  margin: 0;
}

.pattern-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.pattern-action-primary,
.pattern-action-secondary {
  background: transparent;
  border: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast);
  padding: 0;
}

.pattern-action-primary {
  color: var(--text-primary);
}

.pattern-action-primary:hover {
  color: #fff;
}

.pattern-action-secondary {
  color: var(--text-muted);
}

.pattern-action-secondary:hover {
  color: var(--text-secondary);
}

/* Insight card alias (for backwards compatibility) */
.insight-card {
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  transition: all var(--transition-fast);
}

.insight-card:hover {
  border-color: var(--border-hover);
}

.insight-card .type-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.insight-card .description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height);
  margin-top: var(--space-xs);
}

.insight-card .insight-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.insight-card .insight-action-primary {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.insight-card .insight-action-secondary {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

/* =============================================================
   Input Bar - Fixed Bottom
   ============================================================= */

.input-bar {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-width);
  right: 0;
  padding: var(--space-md) var(--space-xl);
  background: var(--deep-bg);
  z-index: 30;
  transition: left var(--transition-slow);
}

.deep-sidebar.collapsed ~ .deep-main .input-bar {
  left: 0;
}

.input-bar-form {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--deep-input-bar);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.input-modes {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.mode-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mode-btn:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

.mode-btn.active {
  background: var(--interactive-active);
  color: var(--text-primary);
}

.mode-btn svg {
  width: 20px;
  height: 20px;
}

.input-area {
  flex: 1;
  min-width: 0;
}

.input-panel {
  display: flex;
  align-items: center;
}

.input-panel.hidden {
  display: none;
}

.input-textarea {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.4;
  resize: none;
  height: 36px;
  padding: 8px var(--space-sm);
}

.input-textarea:focus {
  outline: none;
}

.input-textarea::placeholder {
  color: var(--text-muted);
}

.submit-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text-primary);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--deep-bg);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.submit-btn:hover {
  background: #fff;
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

/* Audio Recorder Panel */
.audio-recorder-panel {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm);
  width: 100%;
}

.audio-status {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.audio-status.recording {
  color: #ef4444;
}

.audio-status.processing {
  color: #f59e0b;
}

.audio-status.ready {
  color: #22c55e;
}

.audio-timer {
  font-size: var(--font-size-sm);
  font-family: monospace;
  color: var(--text-muted);
}

/* Photo Upload Panel */
.photo-upload-panel {
  width: 100%;
  padding: var(--space-sm);
}

.photo-dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60px;
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.photo-dropzone:hover,
.photo-dropzone.drag-over {
  border-color: var(--text-secondary);
  background: var(--interactive-hover);
}

.photo-preview {
  max-height: 100px;
  border-radius: var(--radius-sm);
}

/* =============================================================
   Empty States
   ============================================================= */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  text-align: center;
  min-height: 200px;
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.empty-state p {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  max-width: 300px;
}

/* =============================================================
   Buttons
   ============================================================= */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--text-primary);
  color: var(--deep-bg);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: #fff;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-ghost:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

.btn-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

/* =============================================================
   Forms
   ============================================================= */

.deep-app input[type="text"],
.deep-app input[type="email"],
.deep-app input[type="password"],
.deep-app textarea,
.deep-app select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.deep-app input:focus,
.deep-app textarea:focus,
.deep-app select:focus {
  outline: none;
  border-color: var(--text-secondary);
}

.deep-app input::placeholder,
.deep-app textarea::placeholder {
  color: var(--text-muted);
}

/* =============================================================
   Dropdown Menu
   ============================================================= */

.dropdown-menu {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: var(--space-xs);
  min-width: 180px;
  background: var(--deep-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) 0;
  z-index: 50;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dropdown-menu a,
.dropdown-menu button {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.dropdown-menu .danger {
  color: #ef4444;
}

.dropdown-menu .danger:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
}

/* =============================================================
   Inline Topic Form
   ============================================================= */

.inline-topic-form {
  margin-bottom: var(--space-md);
}

.inline-topic-form input {
  width: 100%;
  padding: var(--space-sm) 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-subtle);
  border-radius: 0;
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

.inline-topic-form input:focus {
  outline: none;
  border-bottom-color: var(--text-secondary);
}

/* =============================================================
   User Menu
   ============================================================= */

.user-menu {
  position: relative;
}

.user-menu-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-menu-trigger:hover {
  background: var(--interactive-hover);
  color: var(--text-primary);
}

/* =============================================================
   Auth Pages (Login/Register)
   ============================================================= */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.auth-container {
  width: 100%;
  max-width: 400px;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.auth-header h1 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.auth-header p {
  color: var(--text-secondary);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.auth-form label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin: var(--space-md) 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

.auth-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.auth-link:hover {
  text-decoration: underline;
}

/* =============================================================
   Utilities
   ============================================================= */

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================================
   Responsive Design
   ============================================================= */

/* Mobile: < 768px */
@media (max-width: 767px) {
  :root {
    --sidebar-width: 280px;
  }

  .deep-sidebar {
    transform: translateX(calc(var(--sidebar-width) * -1));
  }

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

  .deep-main {
    margin-left: 0;
  }

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

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 35;
  }

  .sidebar-backdrop.visible {
    display: block;
  }

  .entries-grid,
  .patterns-grid {
    grid-template-columns: 1fr;
    padding: var(--space-md);
  }

  .input-bar {
    left: 0;
    padding: var(--space-sm) var(--space-md);
  }

  .content-header {
    padding: var(--space-md);
  }

  .content-tabs {
    padding: var(--space-sm) var(--space-md);
  }
}

/* Tablet: 768px - 1023px */
@media (min-width: 768px) and (max-width: 1023px) {
  .entries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .entries-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

/* =============================================================
   Accessibility
   ============================================================= */

.deep-app *:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .deep-app,
  .deep-app * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --border-subtle: rgba(255, 255, 255, 0.3);
    --border-hover: rgba(255, 255, 255, 0.5);
    --text-muted: #9CA3AF;
  }
}

/* =============================================================
   Print Styles
   ============================================================= */

@media print {
  .deep-sidebar,
  .input-bar,
  .mobile-menu-btn {
    display: none !important;
  }

  .deep-main {
    margin-left: 0 !important;
  }

  .deep-app {
    background: white;
    color: black;
  }

  .entry-card,
  .pattern-card {
    break-inside: avoid;
    border: 1px solid #ddd;
  }
}