styles.css

/* Plainnote.io — tokens lifted from the app (app/styles.css) */
:root {
  --bg: #ffffff;
  --tint: #f7f7f5;          /* section tint, between app bg and sidebar */
  --sidebar-bg: #f1f1ef;
  --text: #161616;
  --text-soft: #4a4a4a;
  --muted: #8f8f8b;
  --border: #e6e6e2;
  --border-soft: #efefec;
  --pill: #e9e9e5;
  --code-bg: #f5f5f2;
  --maxw: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
p a, footer a { border-bottom: 1px solid var(--border); }
p a:hover, footer a:hover { border-bottom-color: var(--muted); }

img { max-width: 100%; height: auto; display: block; }

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
  padding: 1px 5px;
}

/* Buttons */
.btn {
  display: inline-block;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  background: var(--pill);
  transition: background 0.15s ease;
}
.btn:hover { background: var(--border); }
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: #333; }
.btn-big { padding: 13px 26px; font-size: 17px; }

/* Nav */
nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; }
.brand img { border-radius: 6px; }
.nav-right { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.nav-right a:not(.btn) { color: var(--text-soft); }
.nav-right a:not(.btn):hover { color: var(--text); }
.gh { display: flex; align-items: center; }

/* Hero */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 28px 0;
  text-align: center;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.lede {
  max-width: 540px;
  margin: 22px auto 0;
  font-size: 19px;
  color: var(--text-soft);
}
.hero-actions { margin-top: 32px; }

/* Screenshots */
.shot {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 60px -24px rgba(22, 22, 22, 0.18);
  background: var(--bg);
}
.shot-hero { margin-top: 56px; }

/* Hero demo — an interactive replica of the app; rules adapted from app/styles.css.
   Tokens are redefined on .demo so the theme toggle only affects the demo. */
.demo {
  --bg: #ffffff;
  --sidebar-bg: #f1f1ef;
  --sidebar-hover: #e6e6e3;
  --sidebar-active: #dededa;
  --text: #161616;
  --text-soft: #4a4a4a;
  --muted: #8f8f8b;
  --border: #e6e6e2;
  --border-soft: #efefec;
  --pill: #e9e9e5;
  --code-bg: #f5f5f2;
}
.demo.theme-dark {
  --bg: #1e1e1d;
  --sidebar-bg: #262625;
  --sidebar-hover: #323230;
  --sidebar-active: #3c3c39;
  --text: #e9e9e6;
  --text-soft: #bcbcb7;
  --muted: #85857f;
  --border: #363634;
  --border-soft: #2b2b29;
  --pill: #343432;
  --code-bg: #2a2a28;
}

.demo-hint { font-size: 14px; color: var(--muted); margin-top: 16px; }

.demo .demo-app {
  display: flex;
  position: relative;
  height: 640px;
  text-align: left;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  cursor: default;
}
.demo button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }

.demo .sidebar {
  width: 250px;
  min-width: 250px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  user-select: none;
}
.demo .sidebar-header { display: flex; align-items: center; gap: 8px; padding: 14px 14px 10px; }
.demo .sidebar-header .sidebar-actions { margin-left: auto; display: flex; gap: 2px; }
.demo .app-name { font-weight: 700; font-size: 14px; letter-spacing: 0.01em; }
.demo .side-icon {
  width: 26px;
  height: 26px;
  min-width: 26px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
}
.demo button.side-icon:hover { background: var(--sidebar-hover); color: var(--text); }
.demo .pane-header .side-icon, .demo .sidebar-footer .side-icon { color: var(--muted); }

.demo .search-wrap { padding: 0 12px 10px; position: relative; }
.demo .d-search {
  width: 100%;
  font: inherit;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
}
.demo .d-search:focus { border-color: #c9c9c4; }
.demo.theme-dark .d-search:focus { border-color: #55554f; }
.demo .d-search::placeholder { color: var(--muted); }
.demo .d-search-clear {
  position: absolute;
  right: 18px;
  top: 0;
  bottom: 10px;
  margin: auto 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  border-radius: 4px;
}
.demo .d-search-clear:hover { color: var(--text); background: var(--sidebar-hover); }
.demo .d-search-clear[hidden] { display: none; }

.demo .d-tree, .demo .d-results { flex: 1; padding: 2px 8px 10px; overflow-y: auto; }
.demo .d-tree[hidden], .demo .d-results[hidden] { display: none; }
.demo .tree-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  min-height: 28px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-soft);
  cursor: pointer;
  white-space: nowrap;
}
.demo .tree-row:hover { background: var(--sidebar-hover); color: var(--text); }
.demo .tree-row.active { background: var(--sidebar-active); color: var(--text); font-weight: 500; }
.demo .tree-row .row-name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.demo .folder-row { color: var(--text); }
.demo .folder-row .row-name { font-weight: 600; }
.demo .folder-row.selected { background: var(--sidebar-hover); }
.demo .chevron {
  width: 14px;
  min-width: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s ease;
}
.demo .tree-row.collapsed .chevron { transform: rotate(-90deg); }
.demo .tree-children { margin-left: 14px; }
.demo .tree-row.open-elsewhere .row-name { text-decoration: underline; text-decoration-color: #c9c9c3; text-underline-offset: 3px; }
.demo.theme-dark .tree-row.open-elsewhere .row-name { text-decoration-color: #55554f; }

.demo .search-hit { padding: 6px 8px; border-radius: 6px; cursor: pointer; margin-bottom: 2px; }
.demo .search-hit:hover { background: var(--sidebar-hover); }
.demo .hit-name { font-size: 13px; font-weight: 500; }
.demo .hit-snippet { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.demo .search-empty { padding: 10px; font-size: 12px; color: var(--muted); }

.demo .section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}
.demo .tags-section { border-top: 1px solid var(--border); padding: 10px 12px; }
.demo .d-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.demo .tag-pill, .demo .backlink-pill {
  font-size: 11.5px;
  line-height: 1.5;
  background: var(--pill);
  color: var(--text-soft);
  padding: 3px 9px;
  border-radius: 99px;
  cursor: pointer;
}
.demo .tag-pill:hover, .demo .backlink-pill:hover { background: var(--sidebar-active); color: var(--text); }
.demo .tag-count { color: var(--muted); margin-left: 4px; }

.demo .sidebar-footer { border-top: 1px solid var(--border); padding: 8px 10px; display: flex; gap: 4px; align-items: center; }
.demo .vault {
  display: flex;
  align-items: center;
  gap: 7px;
  flex: 1;
  min-width: 0;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.demo .d-main { flex: 1; display: flex; min-width: 0; position: relative; background: var(--bg); }
.demo .d-panes { flex: 1; display: flex; min-width: 0; }
.demo .d-expand {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 8;
  color: var(--muted);
}
.demo .d-expand[hidden] { display: none; }
.demo-app.sidebar-hidden .sidebar { display: none; }

.demo .pane { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.demo .pane + .pane { border-left: 1px solid var(--border); }
.demo .pane-header { display: flex; align-items: center; gap: 8px; padding: 12px 24px 6px; }
.demo .pane-header-spacer { flex: 1; }
.demo .pane-mode { display: flex; background: var(--pill); border-radius: 8px; padding: 2px; }
.demo .pane-mode button { font-size: 11.5px; padding: 3px 11px; border-radius: 6px; color: var(--muted); }
.demo .pane-mode button.active { background: var(--bg); color: var(--text); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08); }
.demo.theme-dark .pane-mode button.active { box-shadow: none; }
.demo .pane-scroll { flex: 1; overflow-y: auto; padding: 8px 32px 24px; display: flex; flex-direction: column; }
.demo .pane-content { flex: 0 0 auto; margin-bottom: 48px; }

.demo .markdown { line-height: 1.65; font-size: 14px; }
.demo .markdown h1, .demo .markdown h2, .demo .markdown h3 { margin: 1.4em 0 0.5em; line-height: 1.3; }
.demo .markdown h1 { font-size: 24px; }
.demo .markdown h2 { font-size: 19px; }
.demo .markdown h3 { font-size: 16px; }
.demo .markdown p { margin: 0.6em 0; }
.demo .markdown ul, .demo .markdown ol { margin: 0.6em 0; padding-left: 1.5em; }
.demo .markdown pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0.8em 0;
}
.demo .markdown pre code { background: none; padding: 0; }
.demo .markdown li.task {
  list-style: none;
  margin-left: -1.4em;
  padding-left: 1.4em;
  position: relative;
}
.demo .markdown li.task.done { color: var(--muted); text-decoration: line-through; }
.demo .markdown input.task-check {
  appearance: none;
  -webkit-appearance: none;
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 0.95em;
  height: 0.95em;
  margin: 0;
  border: 1.5px solid var(--muted);
  border-radius: 4px;
  background: none;
  cursor: pointer;
  flex: none;
}
.demo .markdown input.task-check:hover { border-color: var(--text); }
.demo .markdown input.task-check:checked { border-color: var(--text-soft); background: var(--text-soft); }
.demo .markdown input.task-check:checked::after {
  content: "";
  position: absolute;
  left: 0.28em;
  top: 0.08em;
  width: 0.22em;
  height: 0.48em;
  border: solid var(--bg);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.demo .markdown li { margin: 0.2em 0; }
.demo .markdown blockquote { margin: 0.8em 0; padding: 2px 16px; border-left: 3px solid #d4d4d0; color: var(--text-soft); }
.demo .markdown code { font-size: 0.84em; background: var(--code-bg); border: none; padding: 2px 5px; border-radius: 4px; }
.demo .markdown a { color: var(--text); text-decoration: underline; text-underline-offset: 2px; border-bottom: none; }
.demo .markdown a.wikilink { text-decoration: none; border-bottom: 1.5px solid var(--text); font-weight: 500; cursor: pointer; }
.demo .markdown .tag {
  font-size: 0.82em;
  background: var(--pill);
  color: var(--text-soft);
  padding: 1px 8px;
  border-radius: 99px;
  cursor: pointer;
}
.demo .markdown .tag:hover { background: var(--sidebar-active); }

.demo .live-line { padding: 1px 10px; margin: 0 -10px; cursor: text; border-radius: 4px; }
.demo .live-line:hover { background: var(--code-bg); }
.demo .live-line > * { margin: 0; }
.demo .live-line ul, .demo .live-line ol { margin: 0; padding-left: 1.5em; }
.demo .live-line li { margin: 0; }
.demo .live-line pre { margin: 0.3em 0; }
.demo .live-line blockquote { margin: 0; }
.demo .live-line.blank { min-height: 0.45em; }
.demo .live-line.live-h1 { margin-top: 25px; margin-bottom: 4px; }
.demo .live-line.live-h2 { margin-top: 19px; }
.demo .live-line.live-h3 { margin-top: 15px; }
.demo .live-line.live-h:first-child { margin-top: 0; }
.demo .live-editor {
  display: block;
  width: 100%;
  border: none;
  outline: none;
  resize: none;
  overflow: hidden;
  font: inherit;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
  background: var(--code-bg);
  padding: 1px 10px;
  margin: 0 -10px;
  border-radius: 4px;
  caret-color: var(--text);
}
.demo .live-edit-wrap.live-h1 { margin-top: 25px; margin-bottom: 4px; }
.demo .live-edit-wrap.live-h2 { margin-top: 19px; }
.demo .live-edit-wrap.live-h3 { margin-top: 15px; }
.demo .live-hint { color: var(--muted); font-size: 13px; padding: 8px 0; cursor: text; }

.demo .d-suggest {
  position: absolute;
  z-index: 60;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 4px;
  min-width: 160px;
  max-width: 320px;
}
.demo .d-suggest[hidden] { display: none; }
.demo .d-suggest .menu-item {
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 12.5px;
  cursor: pointer;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.demo .d-suggest .menu-item:hover, .demo .d-suggest .menu-item.sel { background: var(--code-bg); color: var(--text); }
.demo.theme-dark .d-suggest { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4); }

.demo .d-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.18);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 14%;
  z-index: 20;
}
.demo .d-modal-overlay[hidden] { display: none; }
.demo .d-modal {
  background: var(--bg);
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.18);
  padding: 18px;
  width: 300px;
}
.demo.theme-dark .d-modal { box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5); }
.demo .d-modal-label { font-size: 12.5px; font-weight: 600; margin-bottom: 10px; }
.demo .d-modal-input {
  width: 100%;
  font: inherit;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  outline: none;
}
.demo .d-modal-input:focus { border-color: #b9b9b4; }
.demo.theme-dark .d-modal-input:focus { border-color: #55554f; }
.demo .d-modal-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.demo .d-modal-buttons button { font-size: 12.5px; padding: 6px 14px; border-radius: 7px; }
.demo .d-modal-cancel { color: var(--muted); }
.demo .d-modal-cancel:hover { background: var(--code-bg); color: var(--text); }
.demo .d-modal-ok { background: var(--text); color: var(--bg); }
.demo .d-modal-ok:hover { opacity: 0.85; }

.demo .pane-backlinks { margin-top: auto; border-top: 1px solid var(--border-soft); padding-top: 12px; }
.demo .backlinks-list { display: flex; flex-wrap: wrap; gap: 6px; min-height: 24px; align-items: center; }
.demo .backlinks-empty { font-size: 12px; color: var(--muted); }

@media (max-width: 720px) {
  .demo .sidebar { display: none; }
  .demo .pane-split { display: none !important; }
  .demo .demo-app { height: 520px; }
  .demo .pane-scroll { padding: 8px 20px 20px; }
}

/* Trust strip */
.trust {
  background: var(--tint);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  margin-top: 96px;
}
.trust ul {
  list-style: none;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 28px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.trust svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--text);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 14px;
}
.trust h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.trust p { font-size: 14.5px; color: var(--text-soft); line-height: 1.55; }

/* Download */
.download {
  text-align: center;
  padding: 104px 28px 96px;
}
.download h2 { font-size: 34px; letter-spacing: -0.015em; }
.download-sub { color: var(--text-soft); margin: 10px 0 28px; }
.download-version { color: var(--muted); font-size: 14px; margin-top: 14px; }

/* Footer */
footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 14px;
  color: var(--muted);
}
footer img { border-radius: 5px; opacity: 0.9; }
footer .dot { color: var(--border); }

/* Responsive */
@media (max-width: 860px) {
  .trust ul { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .trust ul { grid-template-columns: 1fr; }
}