/* SimpleVault — CSS khung. Không font ngoài, không tài nguyên ngoài, không style nội tuyến (CSP chặt). */
:root {
  --bg: #f6f7f9; --fg: #1c2330; --muted: #5d6677; --card: #fff; --line: #d9dde5;
  --primary: #1f5fd1; --primary-fg: #fff; --danger: #b3261e; --warn-bg: #fff4d6; --warn-line: #e3b341;
  --ok-bg: #e4f5e8; --ok-line: #4caf68; --err-bg: #fdeaea; --err-line: #e57373;
  --radius: 8px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14171d; --fg: #e6e9ef; --muted: #98a1b3; --card: #1d2129; --line: #323846;
    --primary: #5b8def; --primary-fg: #0b0f17; --danger: #ff8a80; --warn-bg: #3a3118; --warn-line: #8a6d1d;
    --ok-bg: #173323; --ok-line: #2f7d4a; --err-bg: #3a1c1c; --err-line: #8a3a3a; }
}
* { box-sizing: border-box; }
html { font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--fg); }
body { margin: 0; }
a { color: var(--primary); }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; word-break: break-all; }
h1 { font-size: 1.5rem; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; margin: 1.25rem 0 .5rem; }
.container { max-width: 960px; margin: 0 auto; padding: 1rem; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; padding: .6rem 1rem; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; text-decoration: none; color: var(--fg); }
.nav { display: flex; gap: .25rem; flex: 1; }
.nav a { padding: .35rem .7rem; border-radius: var(--radius); text-decoration: none; color: var(--muted); }
.nav a.active, .nav a:hover { background: var(--bg); color: var(--fg); }
.session-actions { display: flex; gap: .5rem; }
form.inline { display: inline; margin: 0; }
.banner { padding: .6rem 1rem; text-align: center; }
.banner-danger { background: var(--danger); color: #fff; }
.banner-danger code { color: #fff; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.25rem; margin: 1rem 0; }
.card.narrow { max-width: 520px; margin: 2rem auto; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.meta, .hint { color: var(--muted); font-size: .875rem; }
.meta { display: block; margin: .25rem 0; }
.req { color: var(--danger); }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1rem 0 0; }
.btn { display: inline-block; padding: .45rem .9rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); font: inherit; cursor: pointer; text-decoration: none; line-height: 1.3; }
.btn:hover { border-color: var(--primary); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-fg); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-ghost { background: transparent; }
.btn-small { padding: .2rem .55rem; font-size: .85rem; }
label.field { display: block; margin: .9rem 0 .25rem; font-weight: 600; }
label.check { display: flex; gap: .5rem; align-items: center; margin: 1rem 0 .25rem; }
input[type=text], input[type=password], input[type=search], select, textarea {
  width: 100%; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); color: var(--fg); font: inherit; }
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.invalid input, .invalid select, .invalid textarea, label.invalid + input, label.invalid + select, label.invalid + textarea, label.invalid + .with-toggle input, label.invalid + .with-toggle textarea { border-color: var(--danger); }
label.invalid { color: var(--danger); }
.field-error { color: var(--danger); margin: .25rem 0 0; font-size: .875rem; }
.with-toggle { display: flex; gap: .5rem; align-items: flex-start; }
.with-toggle > input, .with-toggle > textarea { flex: 1; }
textarea.masked { -webkit-text-security: disc; text-security: disc; }
.notice { padding: .7rem 1rem; border-radius: var(--radius); border: 1px solid; margin: .75rem 0; }
.notice .meta { margin-top: .25rem; }
.notice-ok { background: var(--ok-bg); border-color: var(--ok-line); }
.notice-warn { background: var(--warn-bg); border-color: var(--warn-line); }
.notice-error { background: var(--err-bg); border-color: var(--err-line); }
.search, .filters { display: flex; gap: .5rem; margin: 1rem 0 .25rem; flex-wrap: wrap; }
.search input[type=search] { flex: 1; min-width: 12rem; }
.filters select, .filters input { width: auto; flex: 1; min-width: 10rem; }
.group h2 .count { color: var(--muted); font-weight: 400; font-size: .9rem; }
.items { list-style: none; margin: 0; padding: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.item { display: flex; gap: 1rem; align-items: baseline; flex-wrap: wrap; padding: .6rem 1rem; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; }
.item-name { font-weight: 600; flex: 1; min-width: 10rem; word-break: break-word; }
.item-name.corrupt { color: var(--danger); }
.item-meta { color: var(--muted); font-size: .85rem; }
.empty { color: var(--muted); text-align: center; padding: 1rem; }
.cards { list-style: none; margin: 1rem 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .75rem; }
.card-link { display: block; height: 100%; padding: .8rem 1rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--fg); }
.card-link:hover { border-color: var(--primary); }
.card-link .meta { display: block; }
.fields { margin: 1rem 0; }
.fieldrow { display: grid; grid-template-columns: 11rem 1fr; gap: .5rem 1rem; padding: .6rem 0; border-top: 1px solid var(--line); align-items: start; }
.fieldrow dt { font-weight: 600; padding-top: .45rem; }
.fieldrow dd { margin: 0; display: flex; gap: .5rem; align-items: flex-start; }
.fieldrow dd input, .fieldrow dd textarea { flex: 1; }
.row-actions { display: flex; gap: .35rem; }
.table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin: 1rem 0; }
.table th, .table td { text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .9rem; }
.table tr.revoked td { color: var(--muted); }
.table tr.bad td { background: var(--err-bg); }
.totp-row { display: flex; align-items: center; gap: 1rem; }
.totp-code { font: 700 2rem ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .15em; }
.totp-bar { width: 100%; height: .5rem; }
.toast { position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%); background: var(--fg); color: var(--bg); padding: .5rem 1rem; border-radius: var(--radius); z-index: 10; }
.toast[hidden], [hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (max-width: 600px) {
  .fieldrow { grid-template-columns: 1fr; }
  .fieldrow dt { padding-top: 0; }
  .item { gap: .25rem; }
}