.sticky-note {
    position: absolute;
    width: 180px;
    min-height: 80px;
    padding: 4px;
    border-radius: 4px;
    box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    font-size: 0.8rem;
    z-index: 10;
    transition: box-shadow 0.15s;
    resize: both;
    overflow: auto;
}

.sticky-note:hover {
    box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    z-index: 20;
}

.sticky-note.dragging {
    opacity: 0.8;
    z-index: 100;
    cursor: grabbing;
    box-shadow: 4px 4px 16px rgba(0, 0, 0, 0.4);
}

.sticky-note-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
    cursor: grab;
    user-select: none;
}

.sticky-note-drag {
    font-size: 0.7rem;
    opacity: 0.4;
    padding: 2px 4px;
    cursor: grab;
}

.sticky-note-drag:hover {
    opacity: 0.8;
}

.sticky-note-delete {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0.5;
    padding: 2px 4px;
    border-radius: 2px;
    color: #333;
}

.sticky-note-delete:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.1);
}

.sticky-note-content {
    padding: 4px;
    color: #333;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.sticky-note-input {
    width: 100%;
    height: calc(100% - 24px);
    min-height: 60px;
    border: none;
    background: transparent;
    resize: none;
    font-family: inherit;
    font-size: 0.8rem;
    padding: 4px;
    color: #333;
    outline: none;
}

/* Note Editor Popup */
.note-editor-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.note-editor {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 400px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.note-editor h3 {
    color: var(--text-primary);
}

.note-editor-textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
}

.note-editor-colors {
    display: flex;
    gap: 8px;
}

.color-btn {
    width: 32px;
    height: 32px;
    border: 2px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s;
}

.color-btn:hover {
    transform: scale(1.15);
}

.color-btn.selected {
    border-color: var(--text-primary);
}

.all-colors {
    border-radius: 6px;
    width: auto;
    padding: 0 8px;
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.note-editor-category {
    padding: 10px 12px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.note-editor-close {
    padding: 10px 20px;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    align-self: flex-end;
}

.note-editor-close:hover {
    background: #2563eb;
}

/* Notes Sidebar */
.notes-sidebar {
    width: 300px;
    min-width: 300px;
    background: var(--sidebar-bg);
    border-left: 1px solid var(--border-color);
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.notes-sidebar h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.sidebar-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-section label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.color-picker {
    display: flex;
    gap: 6px;
    align-items: center;
}

.category-filter {
    padding: 8px 10px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.85rem;
}

.notes-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.no-notes {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
}

.sidebar-note {
    padding: 10px;
    border-radius: 6px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background 0.15s;
}

.sidebar-note:hover {
    background: var(--bg-tertiary);
}

.sidebar-note-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.sidebar-note-page {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.sidebar-note-category {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.sidebar-note-delete {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 2px 4px;
    border-radius: 4px;
}

.sidebar-note-delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.sidebar-note-content {
    font-size: 0.85rem;
    color: var(--text-primary);
    word-wrap: break-word;
    cursor: pointer;
}

.sidebar-note-date {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: monospace;
}

.sidebar-note-edit {
    width: 100%;
    min-height: 60px;
    padding: 8px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    resize: vertical;
    outline: none;
}