/* ─── PROJECT NOTES — FAB ─────────────────────────────────────────────
   Same visual language as .add-node-fab but anchored top-left, just
   below the topbar. Visible only when a project is open. */

/* Confirm modal — always on top of other modals so it can be used as
   a confirmation step from inside another open modal (e.g. delete a
   note from the notes modal). */
#confirmBackdrop {
    z-index: 500;
}

.notes-fab {
    position: fixed;
    top: 68px; /* topbar (52) + 16px breathing room */
    left: 16px;
    z-index: 149;
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-2);
    border: 1px solid var(--border-strong);
    color: var(--fg-muted);
    border-radius: 24px;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px 8px 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
        opacity 0.3s,
        transform 0.3s,
        background 0.15s,
        color 0.15s,
        border-color 0.15s;
    cursor: pointer;
}
.notes-fab.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}
.notes-fab:hover {
    background: var(--bg-hover);
    color: var(--fg);
    border-color: var(--border-vivid);
}
.notes-fab .notes-fab-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--violet);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.notes-fab .notes-fab-icon svg {
    width: 14px;
    height: 14px;
    color: #fff;
}
.notes-fab .notes-fab-label {
    line-height: 1;
}

/* ─── NOTES MODAL — Roundcube-style 2-pane layout ──────────────────── */
.modal.notes-mode {
    width: 96vw;
    max-width: 1100px;
    height: 86vh;
    max-height: 86vh;
}
.modal.notes-mode .modal-body {
    overflow: hidden;
    padding: 0;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: row;
    gap: 0;
}

.notes-layout {
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
}

/* Left column: list of sheets */
.notes-sidebar {
    width: 300px;
    flex-shrink: 0;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.01);
    min-height: 0;
}
.notes-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.notes-sidebar-title {
    font-size: 10px;
    font-weight: 600;
    color: var(--fg-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.notes-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(167, 139, 250, 0.1);
    border: 1px solid rgba(167, 139, 250, 0.3);
    color: var(--violet);
    font-size: 11.5px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--r-sm);
    transition:
        background 0.15s,
        border-color 0.15s;
    cursor: pointer;
}
.notes-add-btn:hover {
    background: rgba(167, 139, 250, 0.18);
    border-color: rgba(167, 139, 250, 0.5);
}
.notes-add-btn svg {
    width: 10px;
    height: 10px;
}
.notes-list {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 0;
}
.notes-list-empty {
    padding: 32px 16px;
    text-align: center;
    color: var(--fg-faint);
    font-size: 12px;
    line-height: 1.5;
    font-style: italic;
}
.notes-list-empty strong {
    display: block;
    font-style: normal;
    color: var(--fg-dim);
    font-size: 12.5px;
    margin-bottom: 6px;
    font-weight: 500;
}
.notes-list-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 12px;
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    background: var(--bg-elevated);
    cursor: pointer;
    transition:
        background 0.15s,
        border-color 0.15s;
    position: relative;
}
.notes-list-item:hover {
    background: var(--bg-hover);
    border-color: var(--border);
}
.notes-list-item.active {
    background: rgba(167, 139, 250, 0.08);
    border-color: rgba(167, 139, 250, 0.4);
}
.notes-list-item-head {
    display: flex;
    align-items: center;
    gap: 8px;
}
.notes-list-item-title {
    flex: 1;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--fg);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.notes-list-item-title.untitled {
    color: var(--fg-faint);
    font-style: italic;
}
.notes-list-item-type {
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-3);
    color: var(--fg-faint);
    text-transform: lowercase;
}
.notes-list-item-type.text {
    background: rgba(94, 234, 212, 0.1);
    color: var(--cyan);
}
.notes-list-item-type.handwritten {
    background: rgba(167, 139, 250, 0.12);
    color: var(--violet);
}
.notes-list-item-meta {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--fg-faint);
    display: flex;
    justify-content: space-between;
    gap: 8px;
}
.notes-list-item-snippet {
    font-size: 11px;
    color: var(--fg-dim);
    line-height: 1.45;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-word;
}
.notes-list-item-actions {
    position: absolute;
    top: 40px;
    right: 8px;
    display: none;
    gap: 2px;
}
.notes-list-item:hover .notes-list-item-actions,
.notes-list-item.active .notes-list-item-actions {
    display: flex;
}
.notes-list-item-action {
    width: 22px;
    height: 22px;
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--fg-faint);
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
        background 0.15s,
        color 0.15s;
    cursor: pointer;
}
.notes-list-item-action:hover {
    color: var(--fg);
    background: var(--bg-hover);
}
.notes-list-item-action.danger:hover {
    color: var(--pink);
    background: rgba(255, 107, 157, 0.12);
    border-color: rgba(255, 107, 157, 0.3);
}
.notes-list-item-action svg {
    width: 11px;
    height: 11px;
}
.notes-sidebar-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--fg-faint);
}

/* Right column: preview */
.notes-preview {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.005);
    min-height: 0;
}
.notes-preview-header {
    padding: 16px 20px 12px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-shrink: 0;
}
.notes-preview-meta {
    flex: 1;
    min-width: 0;
}
.notes-preview-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--fg);
    margin: 0 0 4px;
    line-height: 1.3;
    word-break: break-word;
}
.notes-preview-title.untitled {
    color: var(--fg-faint);
    font-style: italic;
    font-weight: 500;
}
.notes-preview-info {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--fg-faint);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.notes-preview-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}
.notes-preview-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    color: var(--fg-muted);
    font-size: 12px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--r-sm);
    transition:
        background 0.15s,
        color 0.15s,
        border-color 0.15s;
    cursor: pointer;
}
.notes-preview-action:hover {
    background: var(--bg-hover);
    color: var(--fg);
    border-color: var(--border-vivid);
}
.notes-preview-action.primary {
    background: var(--violet);
    border-color: var(--violet);
    color: #fff;
}
.notes-preview-action.primary:hover {
    filter: brightness(1.1);
}
.notes-preview-action svg {
    width: 12px;
    height: 12px;
}

.notes-preview-body {
    flex: 1 1 auto;
    overflow: auto;
    padding: 20px 24px;
    min-height: 0;
}
.notes-preview-text {
    font-size: 13.5px;
    color: var(--fg);
    line-height: 1.65;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: var(--font-sans);
}
.notes-preview-text.empty {
    color: var(--fg-faint);
    font-style: italic;
}
.notes-preview-handwritten {
    background: #0d0d11;
    border: 1px solid var(--border-strong);
    border-radius: var(--r-md);
    padding: 12px;
    overflow: auto;
    max-height: 100%;
}
.notes-preview-handwritten img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: var(--r-sm);
}
.notes-preview-empty {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: center;
    padding: 40px 20px;
    color: var(--fg-faint);
}
.notes-preview-empty-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--fg-dim);
}
.notes-preview-empty-icon svg {
    width: 26px;
    height: 26px;
}
.notes-preview-empty h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--fg-dim);
    margin: 0;
}
.notes-preview-empty p {
    font-size: 12.5px;
    color: var(--fg-faint);
    margin: 0;
    max-width: 320px;
    line-height: 1.5;
}

/* ─── FULLSCREEN EDITOR ───────────────────────────────────────────────
   100vw × 100vh overlay. Truly fills the viewport. Used both when
   creating and when editing a sheet. */
.note-editor-fullscreen {
    position: fixed;
    inset: 0;
    z-index: 600;
    background: var(--bg);
    display: none;
    flex-direction: column;
}
.note-editor-fullscreen.open {
    display: flex;
}
/* When the fullscreen editor is open, the notes modal stays mounted
   underneath but the dimming backdrop is hidden so the editor reads as
   a clean, full-bleed surface (mirrors the .nb-fullscreen-active pattern). */
body.note-editor-active .modal-backdrop {
    background: transparent;
    backdrop-filter: none;
}

.note-editor-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.85);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}
.note-editor-eyebrow {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--fg-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    flex-shrink: 0;
}
.note-editor-title-input {
    flex: 1;
    min-width: 0;
    background: none;
    border: none;
    outline: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--fg);
    font-family: var(--font-sans);
    padding: 4px 8px;
    border-radius: var(--r-sm);
    transition: background 0.15s;
}
.note-editor-title-input:hover {
    background: var(--bg-hover);
}
.note-editor-title-input:focus {
    background: var(--bg-hover);
}
.note-editor-title-input::placeholder {
    color: var(--fg-faint);
    font-weight: 500;
}
.note-editor-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* Tab bar between header and content */
.note-editor-tabs {
    display: flex;
    gap: 0;
    padding: 0 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.6);
    flex-shrink: 0;
}
.note-editor-tab {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--fg-dim);
    font-size: 12.5px;
    font-weight: 500;
    padding: 12px 16px;
    cursor: pointer;
    transition:
        color 0.15s,
        border-color 0.15s;
    margin-bottom: -1px;
    font-family: inherit;
}
.note-editor-tab:hover {
    color: var(--fg);
}
.note-editor-tab.active {
    color: var(--fg);
    border-bottom-color: var(--violet);
}

/* Body fills remaining space */
.note-editor-body {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    background: #0d0d11;
}

/* Text tab — a fullscreen textarea */
.note-editor-text {
    display: none;
    flex: 1 1 auto;
    min-height: 0;
}
.note-editor-text.active {
    display: flex;
}
.note-editor-textarea {
    flex: 1 1 auto;
    width: 100%;
    background: #0d0d11;
    border: none;
    outline: none;
    color: var(--fg);
    font-family: var(--font-sans);
    font-size: 14.5px;
    line-height: 1.7;
    padding: 32px 48px;
    resize: none;
}
.note-editor-textarea::placeholder {
    color: var(--fg-faint);
}

/* Handwritten tab — reuses the .notebook-* visual language but at
   true fullscreen (no wrapper border / radius). */
.note-editor-handwritten {
    display: none;
    flex: 1 1 auto;
    min-height: 0;
    flex-direction: column;
}
.note-editor-handwritten.active {
    display: flex;
}
.note-editor-handwritten .notebook-toolbar {
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
}
.note-editor-handwritten .notebook-scroll {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    background: #0d0d11;
    overscroll-behavior: contain;
}
.note-editor-handwritten .notebook-paper {
    position: relative;
    background: #0d0d11;
}
.note-editor-handwritten .notebook-canvas {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    touch-action: none;
    -ms-touch-action: none;
    cursor: crosshair;
    background: transparent;
}
.note-editor-handwritten .notebook-lines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 31px,
        rgba(180, 200, 230, 0.1) 31px,
        rgba(180, 200, 230, 0.1) 32px
    );
    background-size: 100% 32px;
    background-position: 0 8px;
}
.note-editor-handwritten .notebook-margin {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 64px;
    width: 1px;
    background: rgba(167, 139, 250, 0.22);
    pointer-events: none;
}