:root {
  --bg: #f5f6fb;
  --bg-grad: radial-gradient(1200px 600px at 10% -10%, #e9ecff 0%, transparent 60%), radial-gradient(900px 500px at 110% 10%, #f3e9ff 0%, transparent 55%);
  --surface: #ffffff;
  --surface-2: #f1f3f9;
  --surface-3: #e8ebf4;
  --text: #1b1f2e;
  --muted: #6a7086;
  --border: #e4e7f0;
  --primary: #5b5bd6;
  --primary-2: #7c5cf0;
  --primary-ink: #ffffff;
  --primary-soft: #eef0ff;
  --ok: #1d8a5a;
  --warn-bg: #fff5df;
  --warn: #8a5a00;
  --danger: #c23b3b;
  --danger-bg: #fdecec;
  --info-bg: #eef0ff;
  --info: #3d46a8;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 1px 2px rgba(20, 24, 40, .04), 0 8px 24px rgba(20, 24, 40, .06);
  --shadow-hover: 0 2px 4px rgba(20, 24, 40, .05), 0 14px 32px rgba(60, 60, 160, .12);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --side-w: 248px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --bg-grad: radial-gradient(1200px 600px at 10% -10%, #1b1d3a 0%, transparent 60%), radial-gradient(900px 500px at 110% 10%, #23163a 0%, transparent 55%);
    --surface: #171a24;
    --surface-2: #1e2230;
    --surface-3: #262b3c;
    --text: #e7e9f2;
    --muted: #949bb0;
    --border: #2a2f40;
    --primary: #8b8bff;
    --primary-2: #a98bff;
    --primary-ink: #10112a;
    --primary-soft: #23264a;
    --ok: #4cc38a;
    --warn-bg: #3a2e12;
    --warn: #f3c46b;
    --danger: #ff7b7b;
    --danger-bg: #3a1c1f;
    --info-bg: #23264a;
    --info: #b9c0ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg-grad), var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font: 15px/1.55 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { margin: 0; font-size: 26px; letter-spacing: -.02em; line-height: 1.25; }
h2 { margin: 0 0 14px; font-size: 18px; letter-spacing: -.01em; }
h3 { margin: 22px 0 10px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
code, .mono { font-family: var(--mono); font-size: 13.5px; }
pre { margin: 0; white-space: pre-wrap; word-break: break-word; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.lead { margin: 2px 0 18px; }
.spacer { flex: 1; }
.break { word-break: break-all; }
.ico { flex: none; vertical-align: -3px; }
.ok-text { color: var(--ok); }
.warn-text { color: var(--warn); }
.bad-text { color: var(--danger); }

input, select, textarea {
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  width: 100%;
  min-width: 0;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); }
input[type=checkbox] { width: auto; accent-color: var(--primary); }
input[type=file] { padding: 8px; background: var(--surface-2); }
textarea { resize: vertical; }

.btn {
  font: inherit;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s, box-shadow .15s, transform .05s;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-color: transparent;
  color: var(--primary-ink);
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(91, 91, 214, .28);
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { background: var(--surface-2); }
.btn.tiny { padding: 4px 12px; font-size: 13px; }
.btn.block { width: 100%; margin-top: 10px; padding: 11px 18px; }
.btn.icon-only { padding: 9px; }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  border: 0; border-radius: 10px;
  background: transparent; color: var(--muted);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.icon-btn:hover { background: var(--surface-2); color: var(--primary); text-decoration: none; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 18px;
}

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.label { font-weight: 600; font-size: 13.5px; }
.hint { color: var(--muted); font-size: 12.5px; font-weight: 400; }
.check { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; cursor: pointer; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

.alert { border-radius: var(--radius-sm); padding: 11px 15px; margin: 12px 0; }
.alert.error { background: var(--danger-bg); color: var(--danger); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert.info { background: var(--info-bg); color: var(--info); }
.ok { color: var(--ok); margin-bottom: 8px; }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  font-size: 12.5px;
  white-space: nowrap;
}
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.danger { background: var(--danger-bg); color: var(--danger); }
.badge.info { background: var(--info-bg); color: var(--info); }
.badge.note { background: var(--warn-bg); color: var(--warn); }
.badge.muted { background: transparent; border: 1px dashed var(--border); color: var(--muted); }

/* avatar màu theo nhóm */
.av {
  display: inline-grid; place-items: center; flex: none;
  width: 42px; height: 42px;
  border-radius: 13px;
  font-weight: 700; font-size: 14px; letter-spacing: .02em;
  color: #fff;
  background: var(--av, #5b5bd6);
}
.av.big { width: 56px; height: 56px; border-radius: 17px; font-size: 18px; }
.av.c0 { --av: linear-gradient(135deg, #6366f1, #8b5cf6); }
.av.c1 { --av: linear-gradient(135deg, #0ea5e9, #6366f1); }
.av.c2 { --av: linear-gradient(135deg, #10b981, #0ea5e9); }
.av.c3 { --av: linear-gradient(135deg, #f59e0b, #ef4444); }
.av.c4 { --av: linear-gradient(135deg, #ec4899, #8b5cf6); }
.av.c5 { --av: linear-gradient(135deg, #14b8a6, #22c55e); }
.av.c6 { --av: linear-gradient(135deg, #f97316, #f59e0b); }
.av.c7 { --av: linear-gradient(135deg, #64748b, #334155); }

/* trang xác thực */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 32px 16px; }
.auth-card { width: 100%; max-width: 420px; padding: 32px; }
.auth-card.wide { max-width: 660px; }
.brand { font-weight: 700; display: flex; align-items: center; gap: 10px; font-size: 17px; letter-spacing: -.01em; }
.brand.big { font-size: 24px; margin-bottom: 6px; }
.brand .mark {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px; border-radius: 11px;
  color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 6px 16px rgba(91, 91, 214, .3);
}
.brand.big .mark { width: 42px; height: 42px; border-radius: 13px; }
.step {
  display: inline-grid; place-items: center;
  width: 24px; height: 24px; border-radius: 8px;
  background: var(--primary-soft); color: var(--primary); font-size: 13px;
}
.who-card { display: flex; align-items: center; gap: 12px; padding: 12px; margin: 14px 0 6px; background: var(--surface-2); border-radius: var(--radius-sm); }
.totp { display: flex; gap: 18px; align-items: flex-start; }
.totp img { border-radius: 14px; background: #fff; flex: none; padding: 6px; border: 1px solid var(--border); }
.secret-code { display: block; background: var(--surface-2); padding: 9px 12px; border-radius: 10px; margin-bottom: 12px; word-break: break-all; }

/* khung chính: menu trái */
.shell { display: grid; grid-template-columns: var(--side-w) 1fr; min-height: 100vh; }
.side {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 22px;
  padding: 22px 16px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: blur(10px);
  border-right: 1px solid var(--border);
}
.side .brand { padding: 0 8px; }
.side nav { display: flex; flex-direction: column; gap: 4px; }
.side nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 12px;
  color: var(--muted); font-weight: 500;
}
.side nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.side nav a.on { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 10px; }
.me { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 14px; background: var(--surface-2); min-width: 0; }
.me .av { width: 36px; height: 36px; border-radius: 11px; font-size: 13px; }
.me-name { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.me-name b, .me-name span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-actions { display: flex; gap: 6px; }
.side-actions .btn { flex: 1; padding: 8px 12px; }
.side-actions .btn:last-child { flex: none; }

main { padding: 28px 36px 56px; min-width: 0; }
.page { width: 100%; max-width: 1280px; margin: 0 auto; }
.page.narrow { max-width: 880px; }
.crumb { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 14px; color: var(--muted); font-weight: 500; }
.crumb:hover { color: var(--primary); text-decoration: none; }

.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
.toolbar input, .toolbar select { width: auto; }

.search-box { position: relative; margin-bottom: 14px; }
.search-box .ico { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.search-box input { padding: 13px 16px 13px 46px; border-radius: 14px; box-shadow: var(--shadow); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 20px; }
.chip {
  font: inherit; font-size: 13.5px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 13px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  cursor: pointer; transition: background .15s, border-color .15s;
}
.chip span { color: var(--muted); font-size: 12px; }
.chip:hover { border-color: var(--primary); }
.chip.on { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.chip.on span { color: inherit; opacity: .8; }
.chip.warn { color: var(--warn); }
.chip.warn.on { background: var(--warn); border-color: var(--warn); color: #fff; }

.empty { text-align: center; color: var(--muted); padding: 48px 20px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.empty p { margin: 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.tile {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow); color: var(--text);
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.tile:hover { text-decoration: none; box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.tile-main { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 3px; }
.tile-title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile-sub { display: flex; gap: 10px; font-size: 13px; color: var(--muted); min-width: 0; }
.tile-sub span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile-sub .mono { font-size: 12.5px; }
.tile-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }

.tile { position: relative; }
.tile.selectable { cursor: pointer; }
.tile.locked { opacity: .45; cursor: not-allowed; }
.tile.picked { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft), var(--shadow); }
.tick {
  position: absolute; top: 12px; right: 12px;
  display: grid; place-items: center;
  width: 22px; height: 22px; border-radius: 7px;
  border: 2px solid var(--border); background: var(--surface); color: #fff;
}
.tile.picked .tick { background: var(--primary); border-color: var(--primary); }
.select-hint { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin: -8px 0 16px; }
.page.with-bulk { padding-bottom: 90px; }
.bulk-bar {
  position: fixed; left: calc(var(--side-w) + 16px); right: 16px; bottom: 84px;
  width: fit-content; margin-inline: auto;
  z-index: 20; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center;
  padding: 10px 12px 10px 20px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-hover);
}
.bulk-bar select { width: auto; padding: 8px 12px; border-radius: 999px; }

.item-head { display: flex; gap: 16px; align-items: center; }
.item-title { min-width: 0; }
.item-title h1 { font-size: 22px; overflow-wrap: anywhere; }
.item-title .badge { margin-right: 4px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.actions.bar { margin: 18px 0 6px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.actions.end { justify-content: flex-end; margin-top: 10px; }
.kv { display: grid; grid-template-columns: 170px 1fr; gap: 0; margin: 8px 0 0; }
.kv dt, .kv dd { padding: 12px 0; border-bottom: 1px solid var(--border); margin: 0; }
.kv dt { color: var(--muted); font-size: 13.5px; padding-right: 12px; }
.kv dd { min-width: 0; word-break: break-word; }
.kv dt:last-of-type, .kv dd:last-of-type { border-bottom: 0; }
.secret { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; min-height: 32px; }
.secret > span, .secret > a:first-child { margin-right: 6px; }
.secret .mono { background: var(--surface-2); padding: 3px 10px; border-radius: 8px; }
.secret pre { flex-basis: 100%; background: var(--surface-2); padding: 12px; border-radius: 10px; }
.notes { background: var(--surface-2); padding: 12px; border-radius: 10px; }

.seg { display: inline-flex; background: var(--surface-2); border-radius: 999px; padding: 4px; margin-bottom: 18px; }
.seg button { font: inherit; border: 0; background: transparent; color: var(--muted); padding: 7px 18px; border-radius: 999px; cursor: pointer; }
.seg button.on { background: var(--surface); color: var(--text); box-shadow: var(--shadow); font-weight: 600; }
.seg.inline { margin: 0; }
.seg.inline button { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; }
.owner-filter { width: auto; border-radius: 999px; padding: 8px 14px; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.setting-row h2 { margin-bottom: 4px; }
.setting-row p { margin: 0; }
.switch {
  flex: none; position: relative; width: 52px; height: 30px; border-radius: 999px;
  border: 0; background: var(--surface-3); cursor: pointer; transition: background .2s;
}
.switch span { position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform .2s; }
.switch.on { background: linear-gradient(135deg, var(--primary), var(--primary-2)); }
.switch.on span { transform: translateX(22px); }
.switch:disabled { opacity: .6; }
.auth-card .check { margin: 2px 0 6px; white-space: normal; align-items: flex-start; }
.auth-card .check input { margin-top: 4px; }
.row-actions { white-space: nowrap; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { background: var(--danger-bg); }
.pw { display: flex; gap: 6px; align-items: center; }
.gen { background: var(--surface-2); border-radius: var(--radius-sm); padding: 12px 14px; margin: -4px 0 16px; }
.gen code { display: block; word-break: break-all; margin-bottom: 10px; font-size: 15px; }
.gen-ctl { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.gen-ctl input[type=number] { width: 84px; padding: 5px 10px; }
.fields { margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 2fr auto auto; gap: 8px; align-items: center; margin: 8px 0; }

.timeline { list-style: none; padding: 0; margin: 14px 0 0; }
.timeline li { position: relative; border-left: 2px solid var(--border); padding: 0 0 0 20px; margin-left: 8px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 15px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--primary); }
.timeline li.bad { border-left-color: var(--danger); }
.timeline li.bad::before { border-color: var(--danger); }
.tl-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 10px 12px; margin-left: -12px; border-radius: 12px; cursor: pointer; }
.tl-head:hover { background: var(--surface-2); }
.tl-body { padding: 4px 0 18px; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }

.table-wrap { overflow-x: auto; }
.tbl, .diff { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td, .diff th, .diff td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl th, .diff th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tr.dim td { opacity: .5; }
.diff .before { color: var(--danger); text-decoration: line-through; word-break: break-all; }
.diff .after { color: var(--ok); word-break: break-all; }

.toasts { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; z-index: 50; }
.toast { background: var(--text); color: var(--bg); padding: 11px 20px; border-radius: 999px; box-shadow: var(--shadow-hover); font-size: 14px; }
.toast.error { background: var(--danger); color: #fff; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side {
    position: sticky; height: auto; z-index: 10;
    flex-direction: row; align-items: center; gap: 10px;
    padding: 10px 16px; border-right: 0; border-bottom: 1px solid var(--border);
  }
  .side .brand > span:last-child { display: none; }
  .side nav { flex-direction: row; gap: 2px; }
  .side nav a { padding: 8px 10px; }
  .side nav a span { display: none; }
  .side-foot { margin: 0 0 0 auto; flex-direction: row; align-items: center; }
  .me { padding: 0; background: none; }
  .me-name { display: none; }
  .side-actions .btn { flex: none; }
  main { padding: 18px 16px 48px; }
  .grid2 { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; }
  .kv dt { border-bottom: 0; padding-bottom: 0; }
  .field-row { grid-template-columns: 1fr; }
  .totp { flex-direction: column; }
  h1 { font-size: 22px; }
  .bulk-bar { left: 16px; right: 16px; width: auto; border-radius: var(--radius); }
}