:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #1f2330;
  --muted: #6b7185;
  --border: #e3e5ee;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-text: #ffffff;
  --danger: #dc2626;
  --ok: #16a34a;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --surface: #1a1d24;
    --text: #e6e8ef;
    --muted: #9298ab;
    --border: #2b2f3a;
    --primary: #818cf8;
    --primary-hover: #a5b4fc;
    --primary-text: #111318;
    --danger: #f87171;
    --ok: #4ade80;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 1.25rem 0 .75rem; }
.muted { color: var(--muted); }
.inline { display: inline; margin: 0; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .6rem 1rem; padding-top: max(.6rem, env(safe-area-inset-top));
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; color: var(--text); font-size: 1.1rem; }
.brand:hover { text-decoration: none; }
.nav { display: flex; align-items: center; gap: .25rem .9rem; flex-wrap: wrap; justify-content: flex-end; }
.nav a { color: var(--text); font-weight: 500; }

.offline-banner {
  background: #f59e0b; color: #1f2330; text-align: center; padding: .4rem 1rem; font-size: .9rem;
}

.container { max-width: 1100px; margin: 0 auto; padding: 1.25rem 1rem 3rem; }
.container.narrow { max-width: 460px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.25rem; margin-bottom: 1.25rem;
}
.auth-card { margin-top: 2rem; }
.auth-links { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1rem; font-size: .92rem; flex-wrap: wrap; }

/* Forms */
label { display: block; margin-bottom: .9rem; font-weight: 500; font-size: .92rem; }
input[type=text], input:not([type]), input[type=password], input[type=search] {
  display: block; width: 100%; margin-top: .3rem; padding: .6rem .75rem;
  border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text);
  font: inherit;
}
input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: transparent; }
label.check { display: flex; align-items: center; gap: .5rem; font-weight: 400; }
.form-row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.form-row input { flex: 1 1 180px; margin: 0; }
.form-row label.check { margin: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  padding: .55rem 1rem; border-radius: 8px; border: 1px solid transparent;
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: var(--primary-text); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg); }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: .3rem .65rem; font-size: .85rem; }
.nav .btn { padding: .3rem .7rem; font-size: .9rem; }

/* Flash */
.flash { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; border: 1px solid var(--border); background: var(--surface); }
.flash-error { border-color: var(--danger); color: var(--danger); }
.flash-success { border-color: var(--ok); color: var(--ok); }

/* Notes list */
.toolbar { display: flex; gap: .75rem; align-items: center; margin-bottom: 1.25rem; }
.search { flex: 1; }
.search input { margin: 0; }
.note-grid {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.note-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); transition: transform .1s, border-color .1s;
}
.note-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.note-card.pinned { border-left: 4px solid var(--primary); }
.note-link { display: flex; flex-direction: column; height: 100%; padding: 1rem; color: var(--text); }
.note-link:hover { text-decoration: none; }
.note-link h3 { margin: 0 0 .4rem; font-size: 1.05rem; overflow-wrap: anywhere; }
.note-link .preview { margin: 0 0 .75rem; color: var(--muted); font-size: .92rem; flex: 1; overflow-wrap: anywhere; }
.note-link time { font-size: .8rem; }
.pin { font-size: .85rem; }
.new-note { display: flex; gap: .5rem; }
.check-preview { list-style: none; padding: 0; margin: 0 0 .5rem; font-size: .92rem; flex: 1; }
.check-preview li { overflow-wrap: anywhere; }
.check-preview li.done { color: var(--muted); text-decoration: line-through; }
.check-count { margin: 0 0 .5rem; font-size: .8rem; }
.empty { text-align: center; padding: 3rem 1rem; }

/* Editor */
.editor-head { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.editor-actions { margin-left: auto; display: flex; gap: .5rem; }
.save-status { font-size: .88rem; }
.save-status.error { color: var(--danger); }
.editor-card { padding: 0; overflow: hidden; }
.note-title {
  border: 0 !important; border-bottom: 1px solid var(--border) !important; border-radius: 0 !important;
  background: transparent !important; margin: 0 !important;
  font-size: 1.5rem !important; font-weight: 700; padding: 1rem 1.25rem !important;
}
.note-title:focus { outline: none; }
.editor-card .ql-toolbar.ql-snow { border: 0; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--surface); flex-wrap: wrap; }
.editor-card .ql-container.ql-snow { border: 0; font: inherit; font-size: 1rem; }
.editor-card .ql-editor { min-height: 55vh; padding: 1.25rem; }
.editor-card .ql-editor.ql-blank::before { color: var(--muted); font-style: normal; left: 1.25rem; }
.ql-snow .ql-stroke { stroke: var(--text); }
.ql-snow .ql-fill { fill: var(--text); }
.ql-snow .ql-picker { color: var(--text); }
.ql-snow .ql-picker-options { background: var(--surface); border-color: var(--border) !important; }
.ql-snow .ql-tooltip { background: var(--surface); color: var(--text); border-color: var(--border); box-shadow: var(--shadow); }
.ql-snow .ql-tooltip input[type=text] { display: inline-block; width: 170px; margin: 0; padding: .2rem .4rem; }
.ql-snow.ql-toolbar button:hover .ql-stroke, .ql-snow .ql-active .ql-stroke { stroke: var(--primary) !important; }
.ql-snow.ql-toolbar button:hover .ql-fill, .ql-snow .ql-active .ql-fill { fill: var(--primary) !important; }
.ql-editor img { max-width: 100%; }
.ql-editor li[data-list=checked] { color: var(--muted); text-decoration: line-through; }
.checklist-note .ql-editor li[data-list] { padding: .2rem 0 .2rem 1.5em; }

/* Admin table */
.table-wrap { overflow-x: auto; padding: 0; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { padding: .7rem 1rem; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
.table tr:last-child td { border-bottom: 0; }
.table .num { text-align: right; }
.table .actions { text-align: right; display: flex; gap: .4rem; justify-content: flex-end; }
.badge { display: inline-block; padding: .1rem .55rem; border-radius: 999px; font-size: .78rem; font-weight: 600; background: var(--bg); border: 1px solid var(--border); }
.badge-admin { color: var(--primary); border-color: var(--primary); }
.badge-ok { color: var(--ok); border-color: var(--ok); }
.badge-off { color: var(--danger); border-color: var(--danger); }

@media (max-width: 600px) {
  .brand span { display: none; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar .btn { width: 100%; }
  .new-note .btn { flex: 1; width: auto; }
  .editor-actions { margin-left: 0; }
}