:root {
  --bg: #0f1419;
  --bg-elev: #161b22;
  --bg-soft: #1c2330;
  --border: #2a3344;
  --text: #e7ecf3;
  --muted: #9aa7b8;
  --accent: #5b8cff;
  --accent-2: #3dd68c;
  --danger: #ff6b7a;
  --warn: #ffc857;
  --radius: 12px;
  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --sidebar-w: 240px;
  --list-w: 320px;
  --font: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
.hidden { display: none !important; }
.mobile-only { display: none; }

.login-view {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(91,140,255,.18), transparent),
    radial-gradient(800px 500px at 100% 0%, rgba(61,214,140,.1), transparent),
    var(--bg);
}
.login-card {
  width: min(400px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
}
.brand { text-align: center; margin-bottom: 8px; }
.brand h1 { margin: 8px 0 4px; font-size: 1.6rem; }
.brand p { margin: 0; color: var(--muted); }
.brand-mark {
  width: 48px; height: 48px; margin: 0 auto;
  border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #8b5cff);
  font-weight: 700; font-size: 1.25rem;
}
.brand-mark.sm { width: 28px; height: 28px; font-size: .85rem; border-radius: 8px; margin: 0; }
.login-card label { display: grid; gap: 6px; font-size: .9rem; color: var(--muted); }
.login-card input, .meta-row select, .list-toolbar input, .list-toolbar select,
.note-title, .copy-row input, #tag-input, #share-expires {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
.login-card input:focus, .list-toolbar input:focus, .note-title:focus, #tag-input:focus {
  border-color: var(--accent);
}
.login-card button[type=submit], .btn.primary {
  background: var(--accent);
  border: none;
  border-radius: 10px;
  padding: 11px 14px;
  color: white;
  font-weight: 600;
  cursor: pointer;
}
.error { color: var(--danger); margin: 0; }

.main-view {
  height: 100dvh;
  display: grid;
  grid-template-columns: var(--sidebar-w) var(--list-w) 1fr;
  overflow: hidden;
}
.sidebar, .list-pane, .editor-pane {
  min-height: 0;
  border-right: 1px solid var(--border);
  background: var(--bg-elev);
}
.editor-pane { border-right: none; background: var(--bg); }
.sidebar {
  display: flex; flex-direction: column;
  padding: 14px 12px;
  gap: 12px;
}
.sidebar-top { display: grid; gap: 12px; }
.brand-row { display: flex; align-items: center; gap: 8px; }
.brand-row strong { flex: 1; }
.btn {
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}
.btn.block { width: 100%; }
.btn.ghost { background: transparent; }
.btn.danger { background: rgba(255,107,122,.15); border-color: rgba(255,107,122,.4); color: var(--danger); }
.btn.sm { padding: 6px 10px; font-size: .85rem; }
.icon-btn {
  background: transparent; border: none; cursor: pointer;
  width: 34px; height: 34px; border-radius: 8px;
  display: inline-grid; place-items: center;
}
.icon-btn:hover, .nav-item:hover { background: var(--bg-soft); }
.nav-list, .nav-section { display: grid; gap: 2px; }
.nav-section { margin-top: 8px; }
.nav-section-head {
  display: flex; align-items: center; justify-content: space-between;
  color: var(--muted); font-size: .75rem; text-transform: uppercase;
  letter-spacing: .06em; padding: 6px 8px;
}
.nav-item {
  text-align: left; border: none; background: transparent;
  padding: 8px 10px; border-radius: 8px; cursor: pointer; color: var(--text);
}
.nav-item.active { background: rgba(91,140,255,.18); color: #c9daff; }
.sidebar-foot { margin-top: auto; display: grid; gap: 2px; }

.list-pane { display: flex; flex-direction: column; }
.list-toolbar {
  display: flex; gap: 8px; padding: 12px; border-bottom: 1px solid var(--border);
  align-items: center;
}
.list-toolbar input { flex: 1; }
.list-toolbar select { width: auto; min-width: 110px; }
.note-list { overflow: auto; flex: 1; }
.note-item {
  width: 100%; text-align: left; border: none; border-bottom: 1px solid var(--border);
  background: transparent; padding: 12px 14px; cursor: pointer;
}
.note-item:hover { background: rgba(255,255,255,.03); }
.note-item.active { background: rgba(91,140,255,.12); }
.note-item .title-row { display: flex; gap: 6px; align-items: center; font-weight: 600; }
.note-item .preview { color: var(--muted); font-size: .85rem; margin-top: 4px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.note-item .meta { color: var(--muted); font-size: .75rem; margin-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.badge { font-size: .7rem; padding: 2px 6px; border-radius: 999px; background: var(--bg-soft); }

.editor-wrap { height: 100%; display: flex; flex-direction: column; min-height: 0; }
.empty-editor { height: 100%; display: grid; place-items: center; color: var(--muted); }
.editor-toolbar-top {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
}
.note-title { border: none !important; background: transparent !important; font-size: 1.35rem; font-weight: 700; padding-left: 0 !important; }
.editor-actions { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.save-status { color: var(--muted); font-size: .75rem; min-width: 64px; text-align: right; }
.meta-row {
  display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
  padding: 8px 14px; border-bottom: 1px solid var(--border);
}
.meta-row select { width: auto; min-width: 160px; }
.tag-editor { display: flex; gap: 6px; flex-wrap: wrap; }
.tag-chip {
  display: inline-flex; gap: 4px; align-items: center;
  background: rgba(91,140,255,.15); border-radius: 999px; padding: 3px 8px; font-size: .8rem;
}
.tag-chip button { border: none; background: transparent; cursor: pointer; color: var(--muted); }
#tag-input { width: 120px; padding: 6px 8px; }

.menu-bar {
  display: flex; flex-wrap: wrap; gap: 4px;
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}
.menu-bar button {
  border: 1px solid transparent; background: transparent; border-radius: 8px;
  padding: 6px 8px; cursor: pointer; color: var(--muted); font-size: .85rem;
}
.menu-bar button:hover, .menu-bar button.is-active {
  background: var(--bg-soft); color: var(--text); border-color: var(--border);
}
.editor {
  flex: 1; overflow: auto; padding: 18px 22px 40px;
}
.editor .ProseMirror { outline: none; min-height: 50vh; line-height: 1.65; font-size: 1.02rem; }
.editor .ProseMirror h1 { font-size: 1.8rem; margin: 1rem 0 .5rem; }
.editor .ProseMirror h2 { font-size: 1.4rem; margin: 1rem 0 .5rem; }
.editor .ProseMirror h3 { font-size: 1.15rem; margin: .9rem 0 .4rem; }
.editor .ProseMirror pre {
  background: #0b0f14; border: 1px solid var(--border); border-radius: 10px;
  padding: 12px; overflow: auto; font-family: var(--mono); font-size: .9rem;
}
.editor .ProseMirror code { font-family: var(--mono); font-size: .9em; }
.editor .ProseMirror blockquote {
  border-left: 3px solid var(--accent); margin: .8rem 0; padding-left: 12px; color: var(--muted);
}
.editor .ProseMirror img { max-width: 100%; border-radius: 10px; }
.editor .ProseMirror ul[data-type="taskList"] { list-style: none; padding-left: 0; }
.editor .ProseMirror ul[data-type="taskList"] li { display: flex; gap: 8px; align-items: flex-start; }
.editor .ProseMirror a { color: var(--accent); }

.attach-bar {
  border-top: 1px solid var(--border); padding: 10px 14px;
  display: flex; gap: 10px; align-items: flex-start; flex-wrap: wrap;
}
.attach-list { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.attach-item {
  display: flex; gap: 8px; align-items: center;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 6px 10px; font-size: .85rem;
}
.attach-item a { color: var(--accent); text-decoration: none; }
.attach-item button { border: none; background: transparent; cursor: pointer; color: var(--muted); }

dialog {
  border: 1px solid var(--border); border-radius: 16px;
  background: var(--bg-elev); color: var(--text); padding: 0;
  box-shadow: var(--shadow); width: min(440px, calc(100vw - 24px));
}
dialog::backdrop { background: rgba(0,0,0,.55); }
.dialog-card { padding: 20px; display: grid; gap: 12px; }
.dialog-card h2 { margin: 0; }
.muted { color: var(--muted); margin: 0; }
.row-check { display: flex; gap: 8px; align-items: center; }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; }
.dialog-actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.dialog-actions.stack { flex-direction: column; }

@media (max-width: 960px) {
  .mobile-only { display: inline-grid; }
  .main-view { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: min(280px, 86vw); z-index: 40;
    transform: translateX(-105%); transition: transform .2s ease;
    box-shadow: var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .list-pane, .editor-pane { display: none; }
  .main-view.show-list .list-pane { display: flex; }
  .main-view.show-editor .editor-pane { display: flex; flex-direction: column; }
  .main-view.show-editor .list-pane { display: none; }
}