:root {
  color-scheme: light;
  --ink: #17221d;
  --muted: #68766e;
  --paper: #f7f8f3;
  --card: #fff;
  --line: #dce2da;
  --accent: #176b50;
  --accent-dark: #0d4a36;
  --danger: #a13030;
  --warning: #9a650d;
  --hover: #edf3ee;
  --selected: #e2f1e8;
  --control-height: 2.35rem;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--paper); }
button {
  min-height: var(--control-height); border: 1px solid #b9c4bb; border-radius: .45rem;
  padding: .48rem .7rem; background: var(--card); color: var(--ink);
  font: inherit; font-size: .9rem; cursor: pointer;
}
button:hover:not(:disabled) { border-color: #8fa096; background: var(--hover); }
button:focus-visible, summary:focus-visible, .image-button:focus-visible {
  outline: 3px solid #55b18b55; outline-offset: 1px;
}
button:disabled { cursor: not-allowed; opacity: .55; }
header {
  height: 3.25rem; display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1rem, 3vw, 2.5rem); border-bottom: 1px solid var(--line); background: var(--card);
}
.brand { color: var(--ink); text-decoration: none; font-size: 1.2rem; font-weight: 800; letter-spacing: -.04em; }
.brand span { color: var(--accent); }
body > header > nav { display: flex; gap: .35rem; }
.link { border: 0; padding: .35rem .5rem; background: none; color: var(--accent-dark); cursor: pointer; font: inherit; font-size: .9rem; }
.link:hover, .link:focus-visible { text-decoration: underline; }
main { width: min(64rem, calc(100% - 2rem)); margin: clamp(1.25rem, 4vh, 2.75rem) auto; outline: none; }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 1.5rem; align-items: start; }
h1 { max-width: 16ch; margin: 0 0 .65rem; font-size: clamp(2rem, 5vw, 3.8rem); line-height: 1; letter-spacing: -.055em; }
h2 { margin: 0 0 .7rem; font-size: 1.1rem; }
p { margin: .45rem 0; }
.lede { max-width: 36rem; margin-bottom: 1rem; color: var(--muted); font-size: 1rem; line-height: 1.45; }
.card { padding: 1.1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--card); box-shadow: 0 6px 22px #1b3a2a0a; }
.tabs { display: flex; gap: .2rem; margin: -.2rem 0 .8rem; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; border-bottom: 2px solid transparent; padding: .5rem .6rem; background: none; cursor: pointer; }
.tabs button[aria-selected="true"] { border-color: var(--accent); color: var(--accent); }
form { display: grid; gap: .6rem; }
label { display: grid; gap: .25rem; color: var(--muted); font-size: .85rem; }
input, select { width: 100%; border: 1px solid #b9c4bb; border-radius: .4rem; padding: .58rem .65rem; color: var(--ink); background: #fff; font: inherit; }
textarea { width: 100%; min-height: 8rem; resize: vertical; border: 1px solid var(--accent); border-radius: .35rem; padding: .75rem; font: .9rem/1.55 ui-monospace, SFMono-Regular, Consolas, monospace; }
input:focus, select:focus { outline: 3px solid #55b18b40; border-color: var(--accent); }
button.primary { width: fit-content; border-color: var(--accent); color: #fff; background: var(--accent); font-weight: 700; }
button.primary:hover:not(:disabled) { border-color: var(--accent-dark); background: var(--accent-dark); }
button.quiet { border-color: transparent; background: transparent; color: var(--accent-dark); }
button.quiet:hover:not(:disabled) { border-color: var(--line); background: var(--hover); }
button.danger { border: 1px solid #d8aaaa; color: var(--danger); background: #fff; }
.error { margin: 0; color: var(--danger); font-size: .9rem; }
.error:empty { display: none; }
.muted, small { color: var(--muted); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
#notice { position: fixed; right: 1rem; bottom: 1rem; max-width: 28rem; padding: .65rem .8rem; border-radius: .45rem; background: var(--ink); color: #fff; opacity: 0; transition: opacity .2s; pointer-events: none; }
#notice.show { opacity: 1; }
.toolbar { display: flex; gap: .6rem; align-items: end; flex-wrap: wrap; margin: .65rem 0; }
.toolbar label { min-width: 12rem; flex: 1; }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th, td { padding: .45rem .5rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table-wrap { overflow-x: auto; }
.badge { display: inline-block; border-radius: 1rem; padding: .15rem .5rem; background: #e6eee8; font-size: .8rem; }
.stack { display: grid; gap: .9rem; }
.settings-grid { grid-template-columns: minmax(14rem, .8fr) minmax(20rem, 1.2fr); align-items: start; }
.settings-grid > header { grid-column: 1 / -1; display: block; height: auto; padding: 0; border: 0; background: transparent; }
.actions { display: flex; gap: .4rem; flex-wrap: wrap; }
.actions button { padding: .35rem .55rem; }
.workspace { display: grid; grid-template-columns: minmax(17rem, 28%) 1fr; min-height: calc(100vh - 7rem); border: 1px solid var(--line); border-radius: .7rem; overflow: hidden; background: var(--card); }
.workspace-tree { padding: 1rem; border-right: 1px solid var(--line); overflow: auto; }
.workspace-heading { display: grid; gap: .7rem; margin-bottom: 1rem; }
.workspace-heading h1 { margin: 0; font-size: 1.8rem; }
.workspace-heading p { color: var(--muted); }
.create-controls { display: grid; gap: .25rem; }
.split-create {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto;
}
.split-create > .primary {
  width: 100%; border-radius: .45rem 0 0 .45rem; text-align: left; white-space: nowrap;
}
.create-menu { position: static; }
.create-menu > summary {
  display: grid; width: var(--control-height); height: var(--control-height);
  border: 1px solid var(--accent); border-left-color: #ffffff55;
  border-radius: 0 .45rem .45rem 0; place-items: center;
  background: var(--accent); color: #fff; cursor: pointer; list-style: none;
}
.create-menu > summary::-webkit-details-marker { display: none; }
.create-menu[open] > summary { background: var(--accent-dark); }
.create-options {
  position: absolute; z-index: 5; top: calc(100% + .3rem); left: 0; width: 100%;
  border: 1px solid var(--line); border-radius: .5rem; padding: .3rem;
  background: var(--card); box-shadow: 0 10px 28px #17221d24;
}
.create-options button {
  width: 100%; border-color: transparent; background: transparent; text-align: left;
}
.search-label { position: relative; }
.search-results {
  z-index: 3; width: 100%; max-height: 18rem;
  overflow: auto; border: 1px solid var(--line); border-radius: .45rem;
  background: var(--card); box-shadow: 0 8px 24px #17221d22;
}
.search-results button {
  display: grid; width: 100%; gap: .1rem; border: 0; border-bottom: 1px solid var(--line);
  padding: .55rem .65rem; background: var(--card); color: var(--ink); text-align: left; cursor: pointer;
}
.search-results button:hover, .search-results button:focus-visible { background: #edf3ee; }
.search-results small { font-weight: 400; }
.root-drop {
  margin-bottom: .25rem; border: 1px dashed transparent; border-radius: .35rem;
  padding: .3rem .4rem; color: var(--muted); font-size: .75rem;
}
.workspace-tree > nav { display: block; width: 100%; min-width: 0; }
.workspace-tree ul, .workspace-tree li { width: 100%; min-width: 0; }
.workspace-tree ul { margin: .08rem 0; padding-left: 1rem; list-style: none; }
.workspace-tree > nav > ul { padding-left: 0; }
.tree-row {
  display: flex; min-height: 1.65rem; align-items: center; gap: .2rem; min-width: 0;
  border-radius: .4rem; transition: background-color .12s ease, box-shadow .12s ease;
}
.tree-row:hover { background: var(--hover); }
.tree-row.active {
  background: var(--selected); box-shadow: inset 3px 0 0 var(--accent);
}
.folder-toggle {
  min-height: 0; flex: 0 0 1.55rem; border: 0; padding: .15rem .25rem;
  background: none; color: var(--muted); line-height: 1.2;
  text-align: center; cursor: pointer;
}
.tree-icon {
  display: grid; flex: 0 0 1.55rem; place-items: center; color: var(--accent);
  font-size: .85rem; line-height: 1;
}
.tree-icon.encrypted_note { color: var(--accent-dark); }
.tree-share-indicators {
  display: inline-flex; flex: 0 0 auto; align-items: center; gap: .12rem; padding-right: .3rem;
}
.tree-share-indicator {
  display: grid; width: 1rem; height: 1rem; place-items: center; color: var(--muted);
}
.tree-share-indicator.public { color: var(--accent-dark); }
.tree-share-indicator svg {
  width: .9rem; height: .9rem; fill: none; stroke: currentColor; stroke-linecap: round;
  stroke-linejoin: round; stroke-width: 1.8;
}
.tree-row.dragging { opacity: .45; }
.tree-row.drop-target, .root-drop.drop-target {
  border-color: var(--accent); background: #dcefe5;
}
.tree-name { min-height: 0; flex: 1; overflow: hidden; border: 0; padding: .22rem .3rem; background: none; text-align: left; text-overflow: ellipsis; white-space: nowrap; line-height: 1.25; cursor: pointer; }
.tree-name:hover { background: transparent; }
.tree-name:focus-visible { background: #ffffff99; }
.tree-row.active .tree-name { color: var(--accent-dark); font-weight: 700; }
.tree-empty {
  display: grid; justify-items: start; gap: .45rem; margin: .5rem 0;
  border: 1px dashed var(--line); border-radius: .55rem; padding: .8rem;
  color: var(--muted); font-size: .85rem;
}
.tree-empty strong { color: var(--ink); }
.tree-context-menu {
  position: fixed; z-index: 20; min-width: 10rem; overflow: hidden;
  border: 1px solid var(--line); border-radius: .45rem; padding: .25rem;
  background: var(--card); box-shadow: 0 10px 30px #17221d2b;
}
.tree-context-menu button {
  display: block; width: 100%; border: 0; border-radius: .3rem; padding: .48rem .6rem;
  background: none; color: var(--ink); text-align: left; cursor: pointer;
}
.tree-context-menu button:hover, .tree-context-menu button:focus-visible {
  outline: none; background: #edf3ee;
}
.tree-context-menu button.danger { color: var(--danger); }
.editor-pane { min-width: 0; padding: 1.25rem clamp(1rem, 4vw, 3rem); }
.editor-pane.empty #editor-blocks, .editor-pane.empty .editor-actions { display: none; }
.editor-pane:not(.empty) .editor-empty-state { display: none; }
.editor-heading { height: auto; gap: 1rem; padding: 0 0 .8rem; border: 0; border-bottom: 1px solid var(--line); }
.editor-heading h2 { margin: 0; font-size: 1.35rem; }
.editor-actions { display: flex; align-items: center; justify-content: flex-end; gap: .35rem; flex-wrap: wrap; }
.status-action { min-height: 1.9rem; border-color: transparent; padding: .25rem .45rem; color: var(--accent-dark); background: transparent; }
.save-status {
  display: inline-flex; align-items: center; gap: .35rem; min-height: 1.9rem;
  border-radius: 1rem; padding: .2rem .55rem; background: #eef2ee;
  color: var(--muted); font-size: .8rem; white-space: nowrap;
}
.save-status::before { content: "✓"; color: var(--accent); font-weight: 800; }
.save-status[data-state="unsaved"] { background: #fff4dc; color: #714b0c; }
.save-status[data-state="unsaved"]::before { content: "●"; color: var(--warning); }
.save-status[data-state="saving"]::before { content: "↻"; color: var(--accent); }
.save-status[data-state="failed"], .save-status[data-state="conflict"] {
  background: #fbeaea; color: var(--danger);
}
.save-status[data-state="failed"]::before,
.save-status[data-state="conflict"]::before { content: "!"; color: var(--danger); }
.editor-empty-state {
  display: grid; justify-items: center; max-width: 30rem; margin: clamp(3rem, 10vh, 7rem) auto;
  padding: 1rem; color: var(--muted); text-align: center;
}
.editor-empty-state h2 { margin: .55rem 0 0; color: var(--ink); font-size: 1.3rem; }
.editor-empty-state p { margin-bottom: 1rem; }
.empty-state-icon {
  display: grid; width: 3rem; height: 3rem; border-radius: 50%; place-items: center;
  background: var(--selected); color: var(--accent); font-size: 1.4rem;
}
#editor-blocks { padding-top: .75rem; }
.editor-block { min-height: 2.4rem; margin: .2rem 0; padding: .35rem .5rem; border: 1px solid transparent; border-radius: .35rem; outline: none; }
.editor-block[role="button"]:hover, .editor-block[role="button"]:focus-visible { border-color: var(--line); background: #fafbf8; }
.editor-block h1, .editor-block h2, .editor-block h3 { max-width: none; margin: .2rem 0 .5rem; letter-spacing: -.025em; line-height: 1.2; }
.editor-block p { line-height: 1.6; }
.editor-block img { display: block; max-width: 100%; height: auto; border-radius: .35rem; }
.editor-block pre { overflow: auto; padding: .8rem; border-radius: .35rem; background: #18221d; color: #f3f6f3; }
.editor-block blockquote { margin-left: 0; padding-left: 1rem; border-left: 3px solid var(--accent); color: var(--muted); }
.blocked-image, .math-error { color: var(--danger); }
.image-button {
  display: inline-flex; align-items: center; gap: .35rem; min-height: 1.9rem;
  border: 1px solid transparent; border-radius: .4rem; padding: .25rem .45rem;
  color: var(--accent-dark); font-size: .85rem; cursor: pointer;
}
.image-button:hover { border-color: var(--line); background: var(--hover); }
.empty-block { color: var(--muted); font-style: italic; }
.encrypted-badge {
  display: inline-block; border-radius: 1rem; padding: .15rem .5rem;
  background: #e9e5f4; color: #49366f; font-size: .78rem; font-weight: 700;
}
.locked-note { max-width: 28rem; margin: 2rem auto; }
.locked-note h3 { margin-bottom: .4rem; }
.encryption-dialog {
  width: min(32rem, calc(100% - 2rem)); border: 0; padding: 0;
  border-radius: .7rem; background: transparent;
}
.encryption-dialog::backdrop { background: #17221da6; }
.encryption-dialog .card { box-shadow: 0 16px 50px #0004; }
.encrypted-plaintext { user-select: none; -webkit-user-select: none; }
.impersonation-banner {
  display: flex; align-items: center; justify-content: center; gap: .7rem;
  padding: .55rem 1rem; background: #49366f; color: #fff;
}
.impersonation-banner button { border-color: #fff8; background: #fff; color: #34264f; }
.shared-heading { margin-top: 1.2rem; padding-top: .8rem; border-top: 1px solid var(--line); }
.shared-heading h2 { margin: 0 0 .5rem; font-size: 1rem; }
.shared-entry, .share-list li {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: .35rem 0;
}
.shared-entry span, .share-list span { display: grid; }
.shared-entry button { border: 0; padding: .2rem; background: none; color: var(--muted); }
.shared-owner h3 { margin: .7rem 0 .2rem; color: var(--muted); font-size: .8rem; }
.sharing-dialog {
  width: min(38rem, calc(100% - 2rem)); border: 0; padding: 0;
  border-radius: .7rem; background: transparent;
}
.sharing-dialog::backdrop { background: #17221da6; }
.share-list { padding: 0; list-style: none; }
.public-link-result {
  margin: .8rem 0; padding: .8rem; border: 1px solid var(--accent);
  border-radius: .45rem; background: #edf7f0;
}
.checkbox-label { display: flex; flex-direction: row; align-items: center; gap: .45rem; }
.checkbox-label input { width: auto; }
.public-note { max-width: 58rem; margin: 0 auto; }
.public-note > header { display: block; height: auto; padding: 0 0 1rem; border: 0; }
.public-note h1, .public-note h2 { margin: .45rem 0; }
.public-owner { color: var(--muted); }
.public-rendered { line-height: 1.65; }
.public-rendered img { display: block; max-width: 100%; height: auto; border-radius: .35rem; }
.public-rendered pre { overflow: auto; padding: .8rem; border-radius: .35rem; background: #18221d; color: #f3f6f3; }
.public-workspace {
  display: grid; grid-template-columns: minmax(15rem, 26%) 1fr;
  min-height: calc(100vh - 7rem); overflow: hidden;
  border: 1px solid var(--line); border-radius: .7rem; background: var(--card);
}
.public-workspace > aside { padding: 1rem; border-right: 1px solid var(--line); }
.public-workspace > aside h1 { margin: .5rem 0; }
.public-workspace nav ul { padding-left: 1.1rem; list-style: none; }
.public-workspace nav button {
  width: 100%; border: 0; padding: .35rem; background: none;
  color: var(--ink); text-align: left; cursor: pointer;
}
.public-workspace nav button:hover, .public-workspace nav button:focus-visible {
  background: #edf3ee;
}
.public-workspace .public-note { width: 100%; padding: 1.5rem clamp(1rem, 4vw, 3rem); }
.public-error { max-width: 34rem; margin: 2rem auto; }
body.print-locked #editor-blocks { visibility: hidden; }
body.print-locked #editor-blocks::before {
  visibility: visible; content: "Encrypted note relocked for printing.";
}
@media (max-width: 720px) {
  .hero, .settings-grid { grid-template-columns: 1fr; }
  .workspace { grid-template-columns: 1fr; }
  .public-workspace { grid-template-columns: 1fr; }
  .public-workspace > aside { border-right: 0; border-bottom: 1px solid var(--line); }
  .workspace-tree { border-right: 0; border-bottom: 1px solid var(--line); }
  header { padding: 0 1rem; }
  body > header > nav { gap: .2rem; }
  h1 { max-width: 12ch; }
}