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

/* Theme variables */
:root {
  --bg: #e8e6e0;
  --text: #2a2826;
  --text-muted: #5a5855;
  --surface: rgba(255, 255, 255, 0.7);
  --surface-hover: rgba(255, 255, 255, 0.9);
  --border: rgba(42, 40, 38, 0.15);
  --accent: #5a4a3a;
  --danger: #8b3a3a;
  --danger-hover: #6b2a2a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --text: #d4d4d4;
    --text-muted: #888;
    --surface: rgba(40, 40, 40, 0.8);
    --surface-hover: rgba(50, 50, 50, 0.9);
    --border: rgba(212, 212, 212, 0.15);
    --accent: #a89a8a;
    --danger: #b35a5a;
    --danger-hover: #c36a6a;
  }
}

/* Prevent scrolling caused by canvas */
html, body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

/* Grain canvas */
#grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
}

#app {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
}

button {
  background: var(--accent);
  color: var(--bg);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  transition: background-color 0.2s ease;
}

button:hover {
  opacity: 0.85;
}

button.danger {
  background: var(--danger);
}

button.danger:hover {
  background: var(--danger-hover);
}

input, textarea, select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 500;
  color: var(--text);
}

label input, label textarea {
  margin-top: 0.25rem;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
}

.empty-state h1 {
  margin-bottom: 0.5rem;
}

.empty-state p {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

.error {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--danger);
}

.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

/* Navigation view */
.nav-view header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  gap: 0.75rem;
}

.nav-view h1 {
  font-size: 1.5rem;
  flex: 1;
}

.home-btn {
  width: 36px;
  height: 36px;
  min-width: 36px;
  background: rgba(90, 74, 58, 0.15) url('icon-192.png') center/cover no-repeat;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.1s;
}

.home-btn:hover {
  opacity: 0.8;
}

.home-btn:active {
  transform: scale(0.95);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  background: transparent;
  color: var(--text-muted);
  padding: 0.5rem;
  font-size: 1.25rem;
  line-height: 1;
}

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

.notes-list {
  background: var(--surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.notes-list .empty {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

/* Type menu */
.type-menu {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 100;
}

.type-menu.hidden {
  display: none;
}

.type-menu button {
  text-align: left;
  background: var(--surface-hover);
  color: var(--text);
}

.type-menu button:hover {
  background: var(--accent);
  color: var(--bg);
}

/* Folder tree */
.folder {
  border-bottom: 1px solid var(--border);
}

.folder-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  background: transparent;
}

.folder-header:hover {
  background: var(--surface-hover);
}

.folder-delete {
  margin-left: auto;
  background: transparent;
  color: var(--text-muted);
  padding: 0.25rem 0.5rem;
  font-size: 1rem;
  opacity: 0;
  transition: opacity 0.15s;
}

.folder-header:hover .folder-delete {
  opacity: 1;
}

.folder-delete:hover {
  background: rgba(139, 58, 58, 0.2);
  color: var(--danger);
}

.folder-icon {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.folder-name {
  font-weight: 500;
}

.folder-contents {
  padding-left: 1.5rem;
}

.folder-contents.hidden {
  display: none;
}

/* Note item */
.note-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}

.note-item:last-child {
  border-bottom: none;
}

.note-item:hover {
  background: var(--surface-hover);
}

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

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

/* View note */
.view-note header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.view-note header .actions {
  display: flex;
  gap: 0.5rem;
}

.view-note h1 {
  margin-bottom: 0.5rem;
}

.view-note .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
}

.view-note .description {
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1rem;
}

.view-note .content {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.view-note .content img,
.view-note .content video {
  max-width: 100%;
  border-radius: 4px;
}

.view-note .content audio {
  width: 100%;
}

/* Edit note */
.edit-note header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.edit-note h2 {
  margin-bottom: 1rem;
}

.edit-note form {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.recorder {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.recorder button {
  background: var(--danger);
}

#recordStatus {
  color: var(--danger);
  font-weight: 500;
}

#preview {
  margin-top: 1rem;
}

#preview img,
#preview video {
  max-width: 100%;
  border-radius: 4px;
}

#preview audio {
  width: 100%;
}

/* Markdown content */
.content h1, .content h2, .content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.content h1:first-child, .content h2:first-child, .content h3:first-child {
  margin-top: 0;
}

.content p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.content ul, .content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content code {
  background: var(--surface-hover);
  padding: 0.125rem 0.25rem;
  border-radius: 2px;
  font-family: 'Courier New', monospace;
}

.content pre {
  background: var(--surface-hover);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

.content pre code {
  background: none;
  padding: 0;
}

.content blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.content a {
  color: var(--accent);
}

/* ============================================
   Full-page Text Editor
   ============================================ */
.fullpage-editor {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: transparent;
  display: flex;
  flex-direction: column;
  z-index: 10;
}

.fullpage-editor textarea {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  padding: 2rem;
  font-size: 1.125rem;
  line-height: 1.8;
  font-family: inherit;
  background: transparent;
  color: var(--text);
}

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

/* ============================================
   Save Bar (bottom bar)
   ============================================ */
.save-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.save-options {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.save-options select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.875rem;
  background: var(--surface);
  color: var(--text);
}

.text-btn {
  background: transparent;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
}

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

/* ============================================
   Metadata Panel (expandable)
   ============================================ */
.meta-panel {
  background: var(--surface);
  padding: 1rem;
  border-top: 1px solid var(--border);
}

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

.meta-panel label {
  margin-bottom: 0.75rem;
  font-weight: normal;
  font-size: 0.875rem;
}

.meta-panel input,
.meta-panel textarea {
  font-size: 0.875rem;
  padding: 0.4rem;
}

/* ============================================
   Modal
   ============================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: 8px;
  width: 90%;
  max-width: 400px;
  border: 1px solid var(--border);
}

.modal-content h3 {
  margin-bottom: 1rem;
}

.modal-content input {
  margin-bottom: 1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* ============================================
   Capture View (Image/Video/Audio)
   ============================================ */
.capture-view {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #111;
  display: flex;
  flex-direction: column;
  z-index: 10;
}

.capture-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.capture-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: #fff;
}

.capture-prompt span {
  color: #888;
}

.capture-prompt button {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.file-label {
  background: #333;
  color: #fff;
  padding: 1rem 2rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
}

.file-label:hover {
  background: #555;
}

.capture-area video {
  max-width: 100%;
  max-height: 100%;
}

.capture-area canvas {
  display: none;
}

.cancel-floating {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(0, 0, 0, 0.5);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: #fff;
}

.cancel-floating:hover {
  background: rgba(0, 0, 0, 0.7);
}

/* ============================================
   Preview Area (after capture)
   ============================================ */
.preview-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.preview-area img,
.preview-area video {
  flex: 1;
  object-fit: contain;
  background: #000;
  max-height: 60vh;
}

.preview-area audio {
  width: 100%;
  padding: 2rem;
}

.preview-area .save-bar {
  background: var(--surface);
}

.preview-area .meta-panel {
  background: var(--surface);
}

/* ============================================
   Recording UI
   ============================================ */
.recording-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 8px;
  position: absolute;
  bottom: 2rem;
}

.recording-controls span {
  color: #fff;
  font-family: 'Courier New', monospace;
  font-size: 1.25rem;
}

.recording-controls button {
  background: var(--danger);
}

.recording-ui {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.recording-indicator {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--danger);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.recording-ui span {
  color: #fff;
  font-family: 'Courier New', monospace;
  font-size: 2rem;
}

.recording-ui button {
  background: var(--danger);
  padding: 1rem 2rem;
}

/* Audio capture specific */
.audio-capture .capture-area {
  background: #222;
}

.record-btn {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--danger);
  font-size: 1rem;
}

.record-btn:hover {
  background: var(--danger-hover);
}

/* ============================================
   Settings Panel
   ============================================ */
.settings-panel {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.settings-content {
  background: var(--surface);
  border-radius: 8px;
  width: 90%;
  max-width: 400px;
  max-height: 80vh;
  overflow: auto;
  border: 1px solid var(--border);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.settings-header h2 {
  font-size: 1.25rem;
  margin: 0;
}

.settings-body {
  padding: 1rem;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-info strong {
  display: block;
  margin-bottom: 0.25rem;
}

.setting-info p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin: 0;
}

.setting-item button,
.setting-item .import-label {
  flex-shrink: 0;
}

.import-label {
  background: var(--accent);
  color: var(--bg);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  font-family: inherit;
  display: inline-block;
  margin: 0;
  font-weight: normal;
}

.import-label:hover {
  opacity: 0.85;
}

/* ============================================
   Hidden utility
   ============================================ */
.hidden {
  display: none !important;
}