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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #121212;
  color: #e0e0e0;
  height: 100vh;
  overflow: hidden;
}

.app {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: #1e1e1e;
  border-right: 1px solid #2e2e2e;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px 12px;
}

.sidebar-header h2 {
  font-size: 1.3rem;
  color: #fff;
}

.sidebar-header button {
  width: 30px;
  height: 30px;
  background: #f5a623;
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
}

.sidebar-header button:hover { background: #e09415; }

#searchInput {
  margin: 0 12px 12px;
  padding: 8px 12px;
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  color: #fff;
  font-size: 0.85rem;
  outline: none;
}

#searchInput::placeholder { color: #666; }
#searchInput:focus { border-color: #f5a623; }

#noteList {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  padding: 0 8px;
  scrollbar-width: thin;
  scrollbar-color: #333 transparent;
}

.note-item {
  padding: 12px 10px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 4px;
  transition: background 0.15s;
  border-left: 3px solid transparent;
}

.note-item:hover { background: #2a2a2a; }
.note-item.active { background: #2a2a2a; border-left-color: #f5a623; }

.note-item .note-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #e0e0e0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-item .note-preview {
  font-size: 0.78rem;
  color: #888;
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-item .note-date {
  font-size: 0.72rem;
  color: #555;
  margin-top: 2px;
}

/* Editor */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #181818;
}

#placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: #444;
  font-size: 1rem;
}

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

#editor.hidden { display: none; }

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid #2e2e2e;
}

#noteTitle {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 600;
  outline: none;
}

#noteTitle::placeholder { color: #3a3a3a; }

#deleteNoteBtn {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid #c0392b;
  color: #c0392b;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}

#deleteNoteBtn:hover { background: #c0392b; color: #fff; }

#noteBody {
  flex: 1;
  background: transparent;
  border: none;
  color: #d0d0d0;
  font-size: 1rem;
  line-height: 1.7;
  padding: 20px;
  resize: none;
  outline: none;
  font-family: 'Segoe UI', sans-serif;
}

.editor-footer {
  display: flex;
  justify-content: space-between;
  padding: 8px 20px;
  border-top: 1px solid #2a2a2a;
  font-size: 0.75rem;
  color: #555;
}