:root {
  color-scheme: light;
  --bg: #f7f7f5;
  --panel: #ffffff;
  --panel-2: #f1f1ef;
  --text: #242424;
  --muted: #787774;
  --line: #e5e5e2;
  --accent: #6d5ce7;
  --accent-soft: #eeeafd;
  --danger: #c83d3d;
  --shadow: 0 14px 50px rgba(35, 35, 35, .08);
  --radius: 12px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #191919;
  --panel: #202020;
  --panel-2: #2a2a2a;
  --text: #e8e8e6;
  --muted: #9b9b97;
  --line: #363636;
  --accent: #9a8cff;
  --accent-soft: #312d4b;
  --danger: #ff7777;
  --shadow: 0 14px 50px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 272px 1fr; }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 14px 12px;
  overflow: hidden;
  z-index: 20;
}
.brand-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.brand {
  border: 0;
  background: transparent;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px;
  border-radius: 8px;
  text-align: left;
}
.brand:hover, .main-nav button:hover, .note-item:hover, .sidebar-footer button:hover { background: var(--panel-2); }
.brand > span, .login-mark {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(145deg, #6554d9, #8777f5);
  font-weight: 800;
}
.new-note {
  width: 100%;
  border: 0;
  border-radius: 9px;
  padding: 10px 12px;
  margin: 12px 0 8px;
  background: var(--text);
  color: var(--panel);
  font-weight: 700;
  text-align: left;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 7px 10px;
  background: var(--bg);
}
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; }
.main-nav { display: grid; gap: 2px; margin: 10px 0; }
.main-nav button {
  border: 0;
  background: transparent;
  border-radius: 8px;
  padding: 8px 10px;
  text-align: left;
  color: var(--muted);
}
.main-nav button.active { color: var(--text); background: var(--accent-soft); font-weight: 700; }
.main-nav button span { margin-left: 8px; }
.sidebar-label {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .08em;
  padding: 8px 9px 5px;
}
.note-list { min-height: 0; flex: 1; overflow: auto; }
.note-item {
  width: 100%;
  border: 0;
  background: transparent;
  border-radius: 8px;
  padding: 8px 10px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  white-space: nowrap;
}
.note-item.active { color: var(--text); background: var(--panel-2); font-weight: 650; }
.note-item span:last-child { overflow: hidden; text-overflow: ellipsis; }
.sidebar-footer { display: flex; gap: 4px; border-top: 1px solid var(--line); padding-top: 10px; }
.sidebar-footer button {
  border: 0;
  background: transparent;
  border-radius: 8px;
  min-height: 34px;
  padding: 6px 9px;
  color: var(--muted);
}
.sidebar-footer > button:first-child { flex: 1; text-align: left; }
.sidebar-footer form { display: flex; }

.workspace { min-width: 0; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 24px;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
}
.breadcrumbs { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sync-state { color: var(--muted); font-size: 12px; white-space: nowrap; }
.sync-state span { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #34a853; margin-right: 5px; }
.sync-state.saving span { background: #d89a27; animation: pulse 1s infinite; }
.sync-state.error span { background: var(--danger); }
@keyframes pulse { 50% { opacity: .35; } }
.content { width: min(100%, 1120px); margin: 0 auto; padding: 52px 56px 90px; }
.icon-button { border: 0; background: transparent; padding: 6px; border-radius: 7px; }
.menu-button, .mobile-close { display: none; }

.page-header { margin-bottom: 26px; }
.page-kicker { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.page-header h1 { font-size: clamp(30px, 5vw, 54px); line-height: 1.1; letter-spacing: -.04em; margin: 8px 0 10px; }
.page-header p { margin: 0; color: var(--muted); font-size: 16px; }
.dashboard-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }
.metric, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.metric { padding: 18px; }
.metric strong { display: block; font-size: 30px; margin-top: 4px; }
.metric span { color: var(--muted); }
.panel { padding: 20px; }
.panel h2 { margin: 0 0 4px; font-size: 17px; }
.panel-subtitle { color: var(--muted); margin: 0 0 16px; }
.recent-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 14px; }
.recent-list { display: grid; gap: 5px; }
.recent-card {
  border: 0;
  background: transparent;
  border-radius: 9px;
  padding: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
}
.recent-card:hover { background: var(--panel-2); }
.recent-card b { display: block; }
.recent-card small { color: var(--muted); }
.status-pill, .tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 9px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
}
.quick-actions { display: grid; gap: 8px; }
.quick-actions button, .empty-action, .primary-button, .secondary-button, .danger-button {
  border-radius: 9px;
  padding: 9px 12px;
  font-weight: 700;
}
.quick-actions button, .secondary-button { border: 1px solid var(--line); background: var(--panel); text-align: left; }
.primary-button { border: 1px solid var(--text); background: var(--text); color: var(--panel); }
.danger-button { border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line)); background: transparent; color: var(--danger); }

.editor-shell { max-width: 850px; margin: 0 auto; }
.editor-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.editor-title {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -.035em;
  padding: 4px 0;
}
.editor-menu { display: flex; gap: 5px; }
.editor-menu button { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 7px 9px; }
.properties { display: grid; grid-template-columns: 110px 1fr; gap: 7px 14px; margin: 18px 0 26px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.property-name { color: var(--muted); padding: 6px 0; }
.property-value { min-width: 0; }
.property-value input, .property-value select {
  width: 100%;
  max-width: 420px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 7px;
  padding: 5px 8px;
  outline: 0;
}
.property-value input:hover, .property-value input:focus, .property-value select:hover { border-color: var(--line); background: var(--panel); }
.block-toolbar { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 12px; }
.block-toolbar button {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 5px 9px;
  background: var(--panel);
  color: var(--muted);
}
.block-toolbar button:hover { color: var(--text); border-color: var(--muted); }
.blocks { display: grid; gap: 3px; }
.block-row { display: grid; grid-template-columns: 28px 1fr; gap: 6px; align-items: flex-start; border-radius: 7px; }
.block-row:hover { background: color-mix(in srgb, var(--panel-2) 55%, transparent); }
.block-grip { opacity: 0; border: 0; background: transparent; color: var(--muted); padding: 5px 3px; }
.block-row:hover .block-grip { opacity: 1; }
.block-content {
  min-height: 31px;
  outline: 0;
  padding: 4px 2px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.block-content:empty::before { content: attr(data-placeholder); color: var(--muted); }
.block-row[data-type="h1"] .block-content { font-size: 27px; line-height: 1.25; font-weight: 800; margin-top: 14px; }
.block-row[data-type="h2"] .block-content { font-size: 21px; line-height: 1.3; font-weight: 750; margin-top: 10px; }
.block-row[data-type="bullet"] .block-content::before { content: "• "; color: var(--muted); }
.block-row[data-type="quote"] .block-content { border-left: 3px solid var(--text); padding-left: 12px; font-style: italic; }
.block-row[data-type="code"] .block-content { padding: 10px 12px; background: var(--panel-2); border-radius: 8px; font: 13px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.todo-wrap { display: grid; grid-template-columns: 22px 1fr; align-items: flex-start; }
.todo-wrap input { margin-top: 9px; accent-color: var(--accent); }
.todo-wrap.done .block-content { color: var(--muted); text-decoration: line-through; }
.add-block { border: 0; background: transparent; color: var(--muted); padding: 8px 34px; border-radius: 7px; margin-top: 4px; }
.add-block:hover { background: var(--panel-2); color: var(--text); }
.backlinks { margin-top: 42px; padding-top: 20px; border-top: 1px solid var(--line); }
.backlinks h3 { margin: 0 0 10px; font-size: 14px; }
.backlink-list { display: flex; flex-wrap: wrap; gap: 7px; }
.backlink-list button { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 6px 9px; }
.empty-inline { color: var(--muted); font-size: 13px; }

.view-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
.segmented { display: inline-flex; background: var(--panel-2); border-radius: 8px; padding: 3px; }
.segmented button { border: 0; background: transparent; border-radius: 6px; padding: 6px 10px; color: var(--muted); }
.segmented button.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.database-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 11px; background: var(--panel); }
.database { width: 100%; border-collapse: collapse; min-width: 720px; }
.database th, .database td { border-bottom: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.database th { position: sticky; top: 0; background: var(--panel); color: var(--muted); font-size: 11px; letter-spacing: .05em; }
.database tr:last-child td { border-bottom: 0; }
.database tr:hover td { background: var(--panel-2); }
.database .title-cell { font-weight: 700; cursor: pointer; }
.database select { border: 0; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 4px 8px; }
.board { display: grid; grid-template-columns: repeat(4, minmax(220px, 1fr)); gap: 12px; overflow: auto; padding-bottom: 10px; }
.board-column { background: var(--panel-2); border-radius: 11px; padding: 10px; min-height: 260px; }
.board-heading { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; font-weight: 750; margin: 0 2px 9px; }
.board-card { width: 100%; border: 1px solid var(--line); background: var(--panel); border-radius: 9px; padding: 11px; margin-bottom: 8px; text-align: left; box-shadow: 0 2px 8px rgba(0,0,0,.03); }
.board-card b { display: block; margin-bottom: 7px; }
.board-card small { color: var(--muted); }

.graph-shell { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow); }
.graph-shell svg { width: 100%; height: min(68vh, 650px); display: block; background: radial-gradient(circle at center, var(--accent-soft), transparent 60%); }
.graph-edge { stroke: var(--line); stroke-width: 1.4; }
.graph-node circle { fill: var(--panel); stroke: var(--accent); stroke-width: 2; cursor: pointer; }
.graph-node text { fill: var(--text); font-size: 12px; font-weight: 650; text-anchor: middle; pointer-events: none; }
.graph-node:hover circle { fill: var(--accent-soft); stroke-width: 3; }
.graph-legend { padding: 10px 14px; color: var(--muted); border-top: 1px solid var(--line); font-size: 12px; }
.empty-state { text-align: center; padding: 80px 20px; }
.empty-state .empty-icon { font-size: 42px; color: var(--muted); }
.empty-state h2 { margin: 12px 0 4px; }
.empty-state p { color: var(--muted); }

.toast { position: fixed; right: 22px; bottom: 22px; z-index: 100; background: var(--text); color: var(--panel); border-radius: 9px; padding: 10px 14px; opacity: 0; transform: translateY(12px); pointer-events: none; transition: .2s; box-shadow: var(--shadow); }
.toast.show { opacity: 1; transform: translateY(0); }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 50% 20%, var(--accent-soft), var(--bg) 58%); }
.login-card { width: min(100%, 420px); padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); box-shadow: var(--shadow); }
.login-mark { width: 42px; height: 42px; border-radius: 11px; font-size: 19px; }
.eyebrow { margin: 22px 0 3px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .11em; }
.login-card h1 { margin: 0; font-size: 32px; letter-spacing: -.035em; }
.login-copy { color: var(--muted); margin: 8px 0 24px; }
.login-form { display: grid; gap: 13px; }
.login-form label { color: var(--muted); font-size: 12px; font-weight: 650; }
.login-form input { display: block; width: 100%; margin-top: 5px; border: 1px solid var(--line); border-radius: 9px; padding: 11px; background: var(--bg); outline: 0; }
.login-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.login-form button { border: 0; border-radius: 9px; padding: 11px; background: var(--text); color: var(--panel); font-weight: 750; margin-top: 5px; }
.login-error { margin-bottom: 15px; padding: 10px; border-radius: 8px; color: var(--danger); background: color-mix(in srgb, var(--danger) 9%, transparent); }

@media (max-width: 880px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: min(86vw, 310px); transform: translateX(-105%); transition: transform .2s ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: translateX(0); }
  .menu-button, .mobile-close { display: inline-flex; }
  .topbar { padding: 0 14px; }
  .content { padding: 34px 20px 70px; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .recent-grid { grid-template-columns: 1fr; }
  .board { grid-template-columns: repeat(4, 240px); }
}

@media (max-width: 520px) {
  .content { padding-inline: 15px; }
  .editor-top { display: block; }
  .editor-menu { margin-top: 8px; }
  .properties { grid-template-columns: 82px 1fr; }
  .block-row { grid-template-columns: 18px 1fr; }
  .block-grip { opacity: .5; padding-inline: 0; }
  .page-header h1 { font-size: 36px; }
}