:root {
  --bg-primary: #0a0e14;
  --bg-secondary: #0f141b;
  --bg-tertiary: #1a212c;
  --bg-elevated: #232b38;
  --border: #2a3441;
  --border-strong: #3a4654;
  --text-primary: #e6e6e6;
  --text-secondary: #8a94a3;
  --text-muted: #5c6573;
  --accent: #d4ff00;
  --accent-dim: #a3c400;
  --danger: #ff5555;
  --success: #00d4aa;
  --code: #ff79c6;
  --note: #8be9fd;
  --task: #f1fa8c;
  --config: #bd93f9;
  --credential: #ff6e6e;
  --file: #f8f8f2;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html, body {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button, input, textarea {
  font-family: inherit;
  color: inherit;
}

#app {
  display: grid;
  grid-template-columns: 240px 1fr;
  height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(212, 255, 0, 0.03), transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(139, 233, 253, 0.02), transparent 50%),
    var(--bg-primary);
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  position: relative;
}

.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--accent-dim), transparent);
  opacity: 0.3;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.logo-mark {
  width: 24px;
  height: 24px;
  background: var(--accent);
  position: relative;
  transform: rotate(45deg);
  border-radius: 3px;
  box-shadow: 0 0 20px rgba(212, 255, 0, 0.4);
}

.logo-mark::after {
  content: '';
  position: absolute;
  inset: 4px;
  background: var(--bg-secondary);
  border-radius: 1px;
}

.brand h1 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

#nav-categories {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  transition: all 150ms ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-elevated);
  color: var(--accent);
  box-shadow: inset 2px 0 0 var(--accent);
}

.nav-item .nav-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.nav-item.active .nav-count {
  color: var(--accent);
}

.sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.sync-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sync-status .dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 150ms ease;
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  gap: 16px;
}

.search-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  flex: 1;
  max-width: 480px;
  transition: all 150ms ease;
}

.search-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 255, 0, 0.1);
}

.search-wrapper svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.search-wrapper input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 13px;
}

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

.search-wrapper kbd {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 8px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  border: 1px solid var(--border);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 150ms ease;
  text-transform: uppercase;
}

.btn-primary:hover {
  background: #e6ff33;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(212, 255, 0, 0.3);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: all 150ms ease;
}

.btn-ghost:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 400px;
  color: var(--text-muted);
}

.empty-art {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--text-muted);
  opacity: 0.4;
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.empty-art .bracket {
  color: var(--accent);
  opacity: 0.6;
}

.entries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px;
  align-content: start;
}

.entry-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  cursor: pointer;
  transition: all 200ms ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 140px;
}

.entry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 200ms ease;
}

.entry-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.entry-card:hover::before {
  transform: scaleY(1);
}

.entry-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.entry-card .cat-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 2px 6px;
  border-radius: 2px;
  text-transform: uppercase;
}

.entry-card[data-category="code"] .cat-tag { background: rgba(255, 121, 198, 0.15); color: var(--code); }
.entry-card[data-category="note"] .cat-tag { background: rgba(139, 233, 253, 0.15); color: var(--note); }
.entry-card[data-category="task"] .cat-tag { background: rgba(241, 250, 140, 0.15); color: var(--task); }
.entry-card[data-category="config"] .cat-tag { background: rgba(189, 147, 249, 0.15); color: var(--config); }
.entry-card[data-category="credential"] .cat-tag { background: rgba(255, 110, 110, 0.15); color: var(--credential); }
.entry-card[data-category="file"] .cat-tag { background: rgba(248, 248, 242, 0.15); color: var(--file); }

.entry-card .entry-id {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.entry-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  word-break: break-word;
}

.entry-card .entry-content {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.5;
  max-height: 60px;
  overflow: hidden;
  white-space: pre-wrap;
  word-break: break-word;
  flex: 1;
}

.entry-card .entry-foot {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-top: 1px solid var(--border);
  padding-top: 8px;
  margin-top: 4px;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 200ms ease;
}

.modal-overlay.open {
  display: flex;
}

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

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  width: 90%;
  max-width: 640px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: slideUp 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.modal-narrow { max-width: 420px; }

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.15em;
  font-weight: 700;
}

.modal h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-weight: 700;
}

.form-row input, .form-row textarea {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: all 150ms ease;
  font-family: var(--font-sans);
}

.form-row input:focus, .form-row textarea:focus {
  border-color: var(--accent);
  background: var(--bg-elevated);
}

.form-row textarea {
  font-family: var(--font-mono);
  font-size: 12px;
  resize: vertical;
  min-height: 120px;
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 11px;
  cursor: pointer;
  transition: all 150ms ease;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chip:hover { border-color: var(--border-strong); }
.chip.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  font-weight: 700;
}

.hint {
  font-size: 12px;
  color: var(--text-muted);
}

.hint a {
  color: var(--accent);
  text-decoration: none;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 12px 20px;
  font-size: 12px;
  color: var(--text-primary);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateX(20px);
  transition: all 200ms ease;
  pointer-events: none;
  z-index: 200;
  font-family: var(--font-mono);
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast.error { border-left-color: var(--danger); }

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================
   AI CHAT PANEL
   ============================================ */

.sidebar-section {
  padding: 8px 12px 0 12px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

.nav-ai {
  width: 100%;
  background: linear-gradient(135deg, rgba(212, 255, 0, 0.06), transparent);
  border: 1px solid rgba(212, 255, 0, 0.15);
  border-radius: 4px;
  padding: 8px 12px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 150ms ease;
}

.nav-ai:hover {
  background: linear-gradient(135deg, rgba(212, 255, 0, 0.12), transparent);
  border-color: var(--accent);
}

.nav-ai span:first-child {
  color: var(--accent);
  font-size: 14px;
}

#ai-status-dot {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
}

#ai-status-dot.ready { color: var(--success); }
#ai-status-dot.error { color: var(--danger); }

.ai-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 480px;
  max-width: 100vw;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
  box-shadow: var(--shadow);
}

.ai-panel.open {
  transform: translateX(0);
}

.ai-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-tertiary);
}

.ai-panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.ai-mark {
  font-size: 16px;
  color: var(--accent);
}

.ai-model-tag {
  font-size: 10px;
  color: var(--text-muted);
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--border);
  letter-spacing: 0;
}

.ai-panel-actions {
  display: flex;
  gap: 4px;
}

.ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.ai-messages::-webkit-scrollbar { width: 6px; }
.ai-messages::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

.ai-msg {
  max-width: 90%;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: var(--font-sans);
}

.ai-msg.user {
  align-self: flex-end;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}

.ai-msg.assistant {
  align-self: flex-start;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.ai-msg.system {
  align-self: center;
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 11px;
  font-style: italic;
  text-align: center;
}

.ai-msg.error {
  align-self: flex-start;
  background: rgba(255, 85, 85, 0.08);
  border: 1px solid rgba(255, 85, 85, 0.3);
  color: var(--danger);
}

.ai-msg .cursor {
  display: inline-block;
  width: 7px;
  height: 13px;
  background: var(--accent);
  vertical-align: -2px;
  margin-left: 2px;
  animation: blink 0.8s steps(2) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.ai-input-bar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
  background: var(--bg-tertiary);
}

#ai-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  resize: none;
  outline: none;
  max-height: 160px;
  min-height: 40px;
  transition: border-color 150ms ease;
}

#ai-input:focus {
  border-color: var(--accent);
}

#ai-send-btn {
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#ai-send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@media (max-width: 640px) {
  .ai-panel { width: 100vw; }
}