/* QR-check-in: Glassmorphism trên ảnh nền (Admin chỉnh độ đục / độ mờ ở ⚙️ Tùy chỉnh Mở rộng) */
:root {
  --glass-a: 0.72;                 /* độ đục lớp kính */
  --glass-blur: 14px;
  --bg-dim: 0.25;                  /* lớp tối phủ ảnh nền */

  /* Bề mặt: nội dung + một lớp trung tính thứ hai (lạnh hơn) cho sidebar / topbar */
  --glass: rgba(11, 19, 34, var(--glass-a));
  --glass-strong: rgba(8, 14, 27, calc(var(--glass-a) + 0.14));
  --glass-hi: rgba(255, 255, 255, .06);          /* viền sáng phía trên của lớp kính */
  --line: rgba(255, 255, 255, .13);
  --line-soft: rgba(255, 255, 255, .07);
  --field: rgba(255, 255, 255, .06);
  --field-hover: rgba(255, 255, 255, .09);
  --hover: rgba(255, 255, 255, .07);

  --text: #eef2f8;
  --muted: #a9b6ca;
  --faint: #7f8da3;

  --primary: #3b82f6;
  --primary-hover: #2f74e6;
  --primary-2: #7cb2ff;
  --primary-ink: #ffffff;
  --primary-soft: rgba(59, 130, 246, .18);
  --ring: 0 0 0 3px rgba(124, 178, 255, .45);

  --ok: #5ee08f;
  --ok-solid: #16a34a;
  --ok-bg: rgba(22, 163, 74, .2);
  --err: #ff9d9d;
  --err-solid: #dc2626;
  --err-bg: rgba(220, 38, 38, .2);
  --warn: #fcd56b;
  --warn-bg: rgba(217, 119, 6, .2);

  /* Thang khoảng cách 4px & bo góc */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 20px; --s6: 24px; --s8: 32px;
  --r-sm: 8px; --r-md: 12px; --radius: 16px; --r-lg: 20px;
  --sidebar-w: 264px;

  --shadow: 0 1px 0 var(--glass-hi) inset, 0 12px 32px -12px rgba(0, 0, 0, .45), 0 2px 6px rgba(0, 0, 0, .18);
  --shadow-pop: 0 24px 64px -16px rgba(0, 0, 0, .6), 0 4px 12px rgba(0, 0, 0, .25);
  --ease: cubic-bezier(.16, 1, .3, 1);           /* ease-out mũ: nhanh rồi lắng */
  --t-fast: 140ms;
  --t: 220ms;

  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
/* .btn/.chip đặt display riêng sẽ đè thuộc tính hidden của trình duyệt. */
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; }
body {
  background: #0a1220;
  color: var(--text);
  font: 400 15px/1.55 var(--font);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  caret-color: var(--primary-2);
  font-feature-settings: "cv11", "ss01";
}
::selection { background: rgba(124, 178, 255, .35); color: #fff; }
* { scrollbar-width: thin; scrollbar-color: rgba(255, 255, 255, .18) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .16); border-radius: 999px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background-color: rgba(255, 255, 255, .28); }
::-webkit-scrollbar-track { background: transparent; }

h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: 1.15rem; font-weight: 700; }
h2 { font-size: 1.03rem; font-weight: 700; margin-bottom: var(--s3); }
h3 { font-size: .94rem; font-weight: 650; margin-bottom: var(--s2); }
h3.sub { margin: var(--s5) 0 var(--s2); color: var(--muted); font-weight: 600; }
a { color: var(--primary-2); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: #a9cbff; }
small, .muted { color: var(--muted); }
code { font: .84em var(--mono); word-break: break-all; color: #c9d5ff; background: rgba(255, 255, 255, .06); padding: 1px 5px; border-radius: 5px; }
hr { border: 0; border-top: 1px solid var(--line-soft); margin: var(--s4) 0; }
:focus-visible { outline: none; box-shadow: var(--ring); }

/* ----- Nền ảnh ---------------------------------------------------------- */
.bg-layer {
  position: fixed; inset: 0; z-index: -1;
  background: #0a1220 center / cover no-repeat;
}
.bg-layer::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(5, 10, 20, 0) 0%, rgba(5, 10, 20, .25) 100%),
    linear-gradient(180deg, rgba(5, 10, 20, var(--bg-dim)) 0%, rgba(5, 10, 20, calc(var(--bg-dim) + .18)) 100%);
}

.glass, .card, .stat, .qr-item {
  background: var(--glass);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  backdrop-filter: blur(var(--glass-blur)) saturate(150%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

/* ----- Đăng nhập -------------------------------------------------------- */
.login-screen {
  min-height: 100vh; min-height: 100dvh; display: flex; align-items: center; justify-content: center;
  padding: calc(16px + env(safe-area-inset-top)) 16px calc(16px + env(safe-area-inset-bottom));
}
.login-box {
  width: min(400px, 100%); padding: var(--s8) 28px var(--s6); border-radius: 24px;
  box-shadow: var(--shadow-pop);
  animation: rise .5s var(--ease) both;
}
.login-logo {
  width: 60px; height: 60px; margin: 0 auto var(--s4); border-radius: 17px; overflow: hidden;
  box-shadow: 0 10px 28px -6px rgba(37, 99, 235, .6);
}
.login-logo img { width: 100%; height: 100%; display: block; }
.login-title { text-align: center; font-size: 1.6rem; font-weight: 800; letter-spacing: -.02em; margin-bottom: var(--s1); }
.login-sub { text-align: center; color: var(--muted); margin: 0 0 var(--s6); font-size: .9rem; min-height: 1.4em; }
.login-box label:not(.check) { color: var(--text); font-weight: 500; }
.login-error { color: var(--err); min-height: 1.3em; font-size: .87rem; margin: var(--s1) 0 var(--s2); }
.login-error:empty { min-height: 0; margin: 0 0 var(--s2); }
.login-box .btn.primary { min-height: 46px; font-size: .98rem; }
.login-device { margin-top: var(--s4); padding-top: var(--s4); border-top: 1px solid var(--line-soft); text-align: center; font-size: .8rem; color: var(--faint); }
.login-device .dev-id { color: var(--muted); }
.server-box { margin-top: var(--s3); font-size: .88rem; }
.server-box summary { cursor: pointer; color: var(--muted); }
.pw-wrap { position: relative; display: block; }
.pw-wrap input { padding-right: 46px; }
.pw-toggle {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%); margin-top: 2px;
  border: 0; background: transparent; font-size: 1.05rem; cursor: pointer; padding: 6px 8px; color: var(--text);
  border-radius: var(--r-sm); opacity: .75; transition: opacity var(--t-fast);
}
.pw-toggle:hover { opacity: 1; }
@keyframes rise { from { opacity: 0; transform: translateY(10px) scale(.985); } to { opacity: 1; transform: none; } }

/* ----- Khung ứng dụng: Sidebar trái + nội dung --------------------------- */
.sidebar {
  position: fixed; top: 0; bottom: 0; left: 0; z-index: 30; width: var(--sidebar-w);
  display: flex; flex-direction: column;
  padding: calc(18px + env(safe-area-inset-top)) var(--s3) calc(14px + env(safe-area-inset-bottom));
  border-width: 0 1px 0 0; border-radius: 0; background: var(--glass-strong);
  box-shadow: none;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.brand { display: flex; align-items: center; gap: var(--s3); padding: 0 var(--s2) var(--s4); }
.brand img { width: 38px; height: 38px; border-radius: 11px; flex: none; box-shadow: 0 6px 16px -6px rgba(37, 99, 235, .7); }
.brand > div { min-width: 0; }
.brand b { display: block; font-size: 1.06rem; font-weight: 750; letter-spacing: -.01em; }
.brand small { display: block; font-size: .76rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--faint); }
.nav { display: flex; flex-direction: column; gap: 2px; overflow-y: auto; padding: var(--s1) 0 var(--s3); flex: 1; margin: 0 calc(-1 * var(--s1)); padding-inline: var(--s1); }
.nav-label {
  margin: var(--s4) var(--s3) var(--s1); font-size: .7rem; font-weight: 650;
  text-transform: uppercase; letter-spacing: .08em; color: var(--faint);
}
.nav-label:first-child { margin-top: var(--s1); }
body[data-role="staff"] .nav-label { display: none; }
.nav button {
  position: relative; display: flex; align-items: center; gap: var(--s3); width: 100%; text-align: left;
  min-height: 40px; padding: 8px var(--s3); border: 0; border-radius: 10px; cursor: pointer;
  background: transparent; color: var(--muted); font: inherit; font-weight: 550; font-size: .9rem;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.nav button i { font-style: normal; width: 22px; text-align: center; font-size: 1.02rem; flex: none; filter: saturate(.85); }
.nav button span { flex: 1; line-height: 1.25; }
.nav button:hover { background: var(--hover); color: var(--text); }
.nav button:active { background: rgba(255, 255, 255, .1); }
.nav button.active { background: var(--primary-soft); color: #fff; font-weight: 650; }
.nav button.active i { filter: none; }
.nav button::before {
  content: ""; position: absolute; left: -4px; top: 50%; width: 3px; height: 0; border-radius: 0 3px 3px 0;
  background: var(--primary-2); transform: translateY(-50%); transition: height var(--t) var(--ease);
}
.nav button.active::before { height: 20px; }
.side-foot { border-top: 1px solid var(--line-soft); padding-top: var(--s3); display: grid; gap: var(--s3); }
.whoami { display: flex; gap: var(--s3); align-items: center; padding: 0 var(--s2); min-width: 0; }
.whoami b { display: block; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.whoami small { display: block; font-size: .76rem; color: var(--faint); }
.whoami > div { min-width: 0; }
.avatar {
  flex: none; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(145deg, #4f8ff7, #2563eb); color: #fff; font-weight: 750; font-size: .9rem;
}
.scrim {
  position: fixed; inset: 0; z-index: 25; background: rgba(2, 6, 14, .55);
  -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  opacity: 0; visibility: hidden; transition: opacity var(--t) var(--ease), visibility 0s linear var(--t);
}

.main { margin-left: var(--sidebar-w); min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: var(--s3); min-height: 60px;
  padding: calc(10px + env(safe-area-inset-top)) var(--s6) 10px;
  border-width: 0 0 1px; border-radius: 0; box-shadow: none; background: var(--glass-strong);
}
.topbar-title { flex: 1; min-width: 0; }
.topbar-title h1 { font-size: 1.08rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-title small { display: block; font-size: .76rem; color: var(--faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.menu-btn {
  display: none; flex: none; width: 40px; height: 40px; border-radius: var(--r-md); cursor: pointer;
  border: 1px solid var(--line); background: var(--field); color: var(--text); font-size: 1.2rem;
  transition: background var(--t-fast);
}
.menu-btn:hover { background: var(--field-hover); }
.header-actions { display: flex; gap: var(--s2); align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.content { flex: 1; width: 100%; max-width: 1240px; padding: var(--s6) var(--s6) 56px; }
.view { display: none; }
.view.active { display: block; animation: view-in var(--t) var(--ease) both; }
@keyframes view-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

@media (max-width: 960px) {
  .sidebar { transform: translateX(-104%); width: min(var(--sidebar-w), 86vw); }
  body.nav-open .sidebar { transform: none; box-shadow: var(--shadow-pop); }
  body.nav-open .scrim { opacity: 1; visibility: visible; transition: opacity var(--t) var(--ease); }
  body.nav-open { overflow: hidden; }
  .main { margin-left: 0; }
  .menu-btn { display: grid; place-items: center; }
  .topbar { padding-inline: var(--s4); }
  .content { padding: var(--s4) var(--s4) 40px; }
}
@media (min-width: 961px) { #btnLogoutTop { display: none; } }

.banner { padding: 10px var(--s6); font-size: .88rem; }
.banner.warn { background: rgba(120, 53, 15, .88); color: #fde68a; border-bottom: 1px solid rgba(245, 158, 11, .6); }
.banner a { color: #fff; }
.badge {
  display: inline-block; min-width: 20px; padding: 0 6px; border-radius: 999px;
  background: var(--err-solid); color: #fff; font-size: .72rem; font-weight: 700; line-height: 20px; text-align: center; font-style: normal;
}

/* ----- Thành phần chung -------------------------------------------------- */
.card { border-radius: var(--radius); padding: var(--s5); margin-bottom: var(--s4); }
details.card > summary { cursor: pointer; font-weight: 650; list-style: none; display: flex; align-items: center; gap: var(--s2); }
details.card > summary::-webkit-details-marker { display: none; }
details.card > summary::after {
  content: ""; margin-left: auto; width: 8px; height: 8px; flex: none;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg); transition: transform var(--t) var(--ease);
}
details.card[open] > summary::after { transform: rotate(45deg); }
details.card[open] > summary { margin-bottom: var(--s4); }

label { display: block; font-size: .84rem; color: var(--muted); margin-bottom: var(--s3); }
input, select, textarea {
  display: block; width: 100%; margin-top: 6px; min-height: 42px;
  padding: 9px 12px; font: inherit; color: var(--text);
  background: var(--field); border: 1px solid var(--line); border-radius: 10px;
  transition: border-color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}
input:hover, select:hover, textarea:hover { background: var(--field-hover); }
select option { background: #0f1b2e; color: var(--text); }
textarea { resize: vertical; font-family: var(--mono); font-size: .85rem; }
input::placeholder, textarea::placeholder { color: rgba(169, 182, 202, .62); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary-2); box-shadow: var(--ring); }
input:disabled, select:disabled { opacity: .55; cursor: not-allowed; }
input[type=range] { padding: 0; min-height: 0; height: 24px; accent-color: var(--primary-2); background: transparent; border: 0; box-shadow: none; }
input[type=checkbox], input[type=radio] {
  display: inline-block; width: 17px; height: 17px; min-height: 0; flex: none; margin: 0 10px 0 0; accent-color: var(--primary);
}
.check { display: flex; align-items: center; color: var(--text); font-size: .92rem; cursor: pointer; }

.row { display: flex; gap: var(--s2); flex-wrap: wrap; align-items: center; }
.row > * { flex: 1 1 auto; }
.row > .grow-0, .grow-0 { flex: 0 0 auto; }
.head-row { margin-bottom: var(--s3); justify-content: space-between; }
.head-row > h2 { margin: 0; flex: 1 1 auto; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--s3); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--s4); }
@media (max-width: 1100px) { .grid-2 { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 14px; min-height: 40px; font: inherit; font-weight: 600; font-size: .9rem;
  color: var(--text); background: var(--field); text-decoration: none; white-space: nowrap;
  border: 1px solid var(--line); border-radius: 10px; cursor: pointer; text-align: center;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.btn:hover { border-color: rgba(124, 178, 255, .55); background: var(--field-hover); color: var(--text); }
.btn:active { transform: translateY(1px) scale(.99); }
.btn.primary { background: var(--primary); border-color: transparent; color: var(--primary-ink); box-shadow: 0 6px 16px -8px rgba(59, 130, 246, .8); }
.btn.primary:hover { background: var(--primary-hover); }
.btn.danger { color: var(--err); }
.btn.danger:hover { border-color: rgba(255, 157, 157, .55); background: var(--err-bg); }
.btn.success { background: var(--ok-solid); border-color: transparent; color: #fff; }
.btn.success:hover { background: #128a3e; }
.btn.block { display: flex; width: 100%; }
.btn.small { min-height: 32px; padding: 5px 11px; font-size: .83rem; border-radius: var(--r-sm); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; transform: none; }
label.btn { margin: 0; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  opacity: 0; clip: rect(0 0 0 0); white-space: nowrap;
}

.chip {
  display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 999px;
  font-size: .78rem; font-weight: 600; white-space: nowrap; line-height: 1.5;
  background: rgba(255, 255, 255, .1); color: inherit; border: 0;
}
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.err { background: var(--err-bg); color: var(--err); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
button.chip, .chip-btn { font: inherit; font-size: .78rem; font-weight: 600; cursor: pointer; color: inherit; transition: background var(--t-fast); }
.chip-btn:hover { background: rgba(255, 255, 255, .18); }

.hint { font-size: .84rem; color: var(--muted); margin: var(--s2) 0 0; max-width: 78ch; }
.hint ol, ul.hint { padding-left: 18px; margin: 6px 0; }
.hint li { margin-bottom: 2px; }
.step {
  display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: var(--s2); border-radius: 50%;
  background: var(--primary-soft); color: var(--primary-2); font-size: .76rem; font-weight: 750; vertical-align: 1px;
}

/* ----- Bảng --------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border-radius: var(--r-md); border: 1px solid var(--line-soft); background: rgba(0, 0, 0, .08); }
table { width: 100%; border-collapse: collapse; font-size: .88rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
th {
  color: var(--faint); font-weight: 650; font-size: .74rem; text-transform: uppercase; letter-spacing: .05em;
  background: rgba(14, 22, 38, .92); position: sticky; top: 0; z-index: 1;
}
tbody tr { transition: background var(--t-fast); }
tbody tr:hover td { background: rgba(255, 255, 255, .035); }
td.wrap-cell { white-space: normal; min-width: 200px; }
td.nowrap { white-space: nowrap; }
table.clickable tbody tr { cursor: pointer; }
td.actions { white-space: normal; min-width: 250px; }
td.actions .row { flex-wrap: wrap; gap: 6px; }
td.actions .row > * { flex: 0 0 auto; }
td.actions select { margin: 0; padding: 6px 8px; min-height: 32px; width: 100%; flex: 1 1 100%; }
td.ua small { display: inline-block; max-width: 180px; overflow: hidden; text-overflow: ellipsis; vertical-align: bottom; }
tr.pending-row td { background: var(--warn-bg); }
td.muted, tbody td[colspan] { color: var(--faint); }
.preview-table { max-height: 360px; overflow: auto; }

/* ----- 📊 Tổng quan ------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--s3); margin-bottom: var(--s4); }
.stat {
  border-radius: var(--radius); padding: var(--s4) var(--s5); display: flex; flex-direction: column; gap: 2px;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}
.stat:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, .2); }
.stat b { display: block; font-size: 1.85rem; font-weight: 750; letter-spacing: -.02em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.stat span { order: -1; color: var(--muted); font-size: .82rem; font-weight: 500; }
.stat.tone-ok b { color: var(--ok); }
.stat.tone-err b { color: var(--err); }

/* Bento: ô Tỷ lệ lớn (2 hàng) + 4 ô số liệu */
.bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--s3); margin-bottom: var(--s4); }
.bento > .stat { grid-column: span 4; }
.bento > .tile-rate { grid-row: span 2; justify-content: space-between; padding: var(--s5) var(--s6); }
.tile-rate .progress-big { display: grid; gap: var(--s3); }
.tile-rate .rate-num { font-size: 3.2rem; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.tile-rate .progress-text { margin: 0; font-size: .86rem; }
@media (max-width: 760px) {
  .bento { grid-template-columns: 1fr 1fr; }
  .bento > .stat { grid-column: auto; }
  .bento > .tile-rate { grid-column: 1 / -1; grid-row: auto; gap: var(--s3); }
  .tile-rate .rate-num { font-size: 2.6rem; }
}
.progress-track { height: 12px; border-radius: 999px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.progress-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--primary), var(--primary-2)); transition: width .6s var(--ease); }
.progress-text { margin-top: var(--s2); color: var(--muted); }
.progress-text b { color: var(--text); font-size: 1.35rem; margin-right: 6px; font-variant-numeric: tabular-nums; }
.hbars { display: grid; gap: var(--s2); }
.hbar { display: grid; grid-template-columns: minmax(90px, 38%) 1fr auto; gap: var(--s3); align-items: center; font-size: .85rem; }
.hbar-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hbar-track { height: 10px; border-radius: 999px; background: rgba(255, 255, 255, .08); overflow: hidden; }
.hbar-fill { display: block; height: 100%; border-radius: 999px; background: var(--primary-2); transition: width .6s var(--ease); }
.hbar-value { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 52px; text-align: right; }
.hbar:hover .hbar-fill, .vbar:hover .vbar-fill { background: #a9cbff; }
.vbars { display: flex; align-items: stretch; gap: 6px; height: 210px; padding-top: 4px; border-bottom: 1px solid var(--line); }
.vbar { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.vbar-col { flex: 1; width: 100%; max-width: 44px; display: flex; align-items: flex-end; }
.vbar-fill { display: block; width: 100%; border-radius: 6px 6px 0 0; background: var(--primary-2); transition: height .6s var(--ease); }
.vbar-value { font-size: .76rem; color: var(--text); font-variant-numeric: tabular-nums; }
.vbar-label { font-size: .74rem; color: var(--faint); padding-bottom: 4px; }

.links li { margin-bottom: var(--s2); }
.access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
@media (max-width: 760px) { .access-grid { grid-template-columns: 1fr; } }
.access-item { border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: var(--s4); min-width: 0; background: rgba(255, 255, 255, .025); }
.access-item h3 small { font-weight: 500; }
.url-row { display: flex; gap: var(--s2); align-items: center; flex-wrap: wrap; margin-bottom: var(--s3); }
.url-row a { flex: 1 1 200px; min-width: 0; font-weight: 650; word-break: break-all; }
.big-qr { display: block; width: min(240px, 100%); aspect-ratio: 1; background: #fff; border-radius: var(--r-md); margin: var(--s1) auto 0; padding: 6px; }
.more-links { margin-top: var(--s3); }
.more-links summary { cursor: pointer; color: var(--muted); font-size: .88rem; }
.more-links ul { margin-top: var(--s2); padding-left: 18px; }

/* ----- 👥 Danh sách & hộp chi tiết ---------------------------------------- */
.filters { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: var(--s2); align-items: center; }
.filters > * { margin: 0; }
@media (max-width: 760px) { .filters { grid-template-columns: 1fr 1fr; } .filters #studentSearch { grid-column: 1 / -1; } }
.modal {
  position: fixed; inset: 0; z-index: 50; display: none;
  align-items: center; justify-content: center; padding: var(--s4);
  background: rgba(2, 6, 14, .72); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.modal.open { display: flex; animation: fade var(--t) var(--ease); }
.modal.open > img, .modal.open > .dialog { animation: rise var(--t) var(--ease); }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal > img { max-width: min(92vw, 640px); max-height: 90vh; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-pop); }
.dialog {
  width: min(760px, 100%); max-height: calc(100dvh - 32px); overflow-y: auto;
  border-radius: var(--r-lg); padding: var(--s6); background: rgba(10, 17, 31, .96); box-shadow: var(--shadow-pop);
}
.person-body { display: grid; grid-template-columns: 200px 1fr; gap: var(--s5); align-items: start; }
.person-qr { width: 100%; border-radius: var(--r-md); background: #fff; }
.person-status { margin: var(--s1) 0 var(--s3); }
@media (max-width: 640px) { .person-body { grid-template-columns: 1fr; } .person-qr { max-width: 220px; margin: 0 auto; } }

/* ----- 📥 Nhập dữ liệu ------------------------------------------------------- */
.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  min-height: 150px; padding: var(--s5); margin: 0; text-align: center; cursor: pointer;
  border: 1.5px dashed rgba(124, 178, 255, .45); border-radius: 14px; background: rgba(59, 130, 246, .06);
  color: var(--text); font-size: .95rem; transition: background var(--t-fast), border-color var(--t-fast);
}
.dropzone b { font-size: 1.02rem; }
.dropzone span { color: var(--muted); font-size: .84rem; }
.dropzone.over, .dropzone:hover { border-color: var(--primary-2); background: rgba(59, 130, 246, .14); }
.col-map { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: var(--s3); }
.map-chip { padding: 3px 10px; border-radius: 999px; font-size: .78rem; border: 1px solid var(--line); }
.map-chip.core { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.map-chip.extra { background: var(--primary-soft); color: #c3dbff; border-color: transparent; }
.map-chip.skip { color: var(--faint); text-decoration: line-through; }
.chips-row { margin-top: var(--s2); }

/* ----- 🔲 QR ---------------------------------------------------------------- */
.qr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: var(--s3); }
.qr-item { border-radius: var(--radius); padding: var(--s3); text-align: center; transition: transform var(--t) var(--ease), border-color var(--t); }
.qr-item:hover { transform: translateY(-2px); border-color: rgba(124, 178, 255, .4); }
.qr-item img { width: 100%; height: auto; border-radius: var(--r-sm); cursor: zoom-in; background: #fff; }
.qr-item .row { margin-top: var(--s2); }

/* ----- ⚙️ Tùy chỉnh ---------------------------------------------------------- */
.brand-grid { display: grid; grid-template-columns: minmax(200px, 320px) 1fr; gap: var(--s5); align-items: start; }
@media (max-width: 700px) { .brand-grid { grid-template-columns: 1fr; } }
.bg-preview {
  aspect-ratio: 16 / 9; border-radius: var(--r-md); border: 1px solid var(--line);
  background: #111 center / cover no-repeat; position: relative; overflow: hidden;
}
.bg-preview span {
  position: absolute; left: 8px; bottom: 8px; padding: 2px 8px; border-radius: 999px;
  background: rgba(0, 0, 0, .55); font-size: .74rem;
}
#adminAccountsCard h3 { margin-bottom: var(--s2); }
.logo-row { align-items: center; margin-top: var(--s3); }
.logo-preview {
  flex: 0 0 auto; width: 56px; height: 56px; border-radius: var(--r-md); border: 1px solid var(--line);
  background: #fff; display: grid; place-items: center; overflow: hidden;
}
.logo-preview img { max-width: 80%; max-height: 80%; }
.logo-preview span { padding: 4px; font-size: .62rem; line-height: 1.2; color: #64748b; text-align: center; }

/* ----- 📷 Máy quét ----------------------------------------------------------- */
.scan-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 0 var(--s4); align-items: start; }
@media (max-width: 1100px) { .scan-grid { grid-template-columns: 1fr; max-width: 600px; margin: 0 auto; } }
.reader {
  position: relative; width: 100%; aspect-ratio: 1 / 1; margin: var(--s2) 0 var(--s3); max-height: 70vh;
  background: #03060c; border-radius: 14px; overflow: hidden;
  color: #9ca3af; font-size: .9rem; text-align: center;
  box-shadow: 0 0 0 1px var(--line-soft) inset;
}
.reader video { width: 100%; height: 100%; object-fit: cover; display: block; }
.reader-msg {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  padding: var(--s5); pointer-events: none;
}
.reader.live .reader-msg { display: none; }
.aim { position: absolute; inset: 15%; pointer-events: none; transition: inset var(--t) var(--ease); }
.aim span { position: absolute; width: 30px; height: 30px; border: 3px solid rgba(255, 255, 255, .92); transition: border-color var(--t-fast); }
.aim .tl { top: 0; left: 0; border-right: 0; border-bottom: 0; border-top-left-radius: 10px; }
.aim .tr { top: 0; right: 0; border-left: 0; border-bottom: 0; border-top-right-radius: 10px; }
.aim .bl { bottom: 0; left: 0; border-right: 0; border-top: 0; border-bottom-left-radius: 10px; }
.aim .br { bottom: 0; right: 0; border-left: 0; border-top: 0; border-bottom-right-radius: 10px; }
.reader.live .aim::after {
  content: ""; position: absolute; left: 6%; right: 6%; top: 0; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(124, 178, 255, .9), transparent);
  animation: sweep 2.4s ease-in-out infinite alternate;
}
@keyframes sweep { from { top: 4%; } to { top: 96%; } }
.reader.hit .aim { inset: 13%; }
.reader.hit .aim span { border-color: var(--ok); }
.reader.hit .aim::after { display: none; }
.cam-help {
  margin: 0 0 var(--s3); padding: 10px 12px; border-radius: 10px; font-size: .88rem;
  background: var(--err-bg); color: var(--err); border: 1px solid rgba(255, 157, 157, .45);
}
.cam-help.info { background: var(--warn-bg); color: var(--warn); border-color: rgba(252, 213, 107, .45); }
.cam-help ol { margin: 6px 0 0; padding-left: 18px; }
.cam-help code { color: inherit; opacity: .85; }

.result { border-width: 1.5px; transition: background var(--t) var(--ease), border-color var(--t) var(--ease); }
.result .status { display: flex; align-items: center; gap: var(--s3); }
.result .icon { font-size: 2rem; line-height: 1; }
.result .title { font-size: 1.2rem; font-weight: 800; letter-spacing: -.01em; }
.result .msg { margin: var(--s2) 0 var(--s3); font-weight: 600; font-size: 1rem; }
.result dl { display: grid; grid-template-columns: 120px 1fr; gap: 6px var(--s3); margin: 0; padding-top: var(--s3); border-top: 1px solid var(--line-soft); }
.result dt { color: var(--muted); font-size: .86rem; }
.result dd { margin: 0; font-weight: 650; word-break: break-word; font-variant-numeric: tabular-nums; }
.result.ok { border-color: rgba(94, 224, 143, .7); background: rgba(5, 46, 22, calc(var(--glass-a) + .1)); }
.result.ok .title, .result.ok .msg { color: var(--ok); }
.result.err { border-color: rgba(255, 157, 157, .7); background: rgba(69, 10, 10, calc(var(--glass-a) + .1)); }
.result.err .title, .result.err .msg { color: var(--err); }
.result.warn { border-color: rgba(252, 213, 107, .7); background: rgba(66, 32, 6, calc(var(--glass-a) + .1)); }
.result.warn .title, .result.warn .msg { color: var(--warn); }
.result.flash { animation: flash .4s var(--ease); }
@keyframes flash { from { transform: scale(.965); } to { transform: scale(1); } }

.recent { list-style: none; margin: 0; padding: 0; }
.recent li { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line-soft); font-size: .9rem; }
.recent li:first-child { border-top: 0; }
.dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 7px; flex: none; background: var(--muted); }
.dot.ok { background: var(--ok); } .dot.err { background: var(--err); } .dot.warn { background: var(--warn); }

.auth-card .dev-box {
  margin: var(--s3) 0 0; padding: var(--s3); border-radius: 10px; border: 1px dashed var(--line);
  background: rgba(255, 255, 255, .04); text-align: center;
}
.auth-card .dev-box .dev-id { font-size: 1.3rem; display: block; margin-top: 2px; }
.wait-box { padding: var(--s3); border-radius: 10px; background: var(--warn-bg); color: var(--warn); border: 1px solid rgba(252, 213, 107, .45); }
.staff-bar { display: flex; align-items: center; justify-content: space-between; gap: var(--s2); margin-bottom: var(--s2); }
.staff-bar .who { font-weight: 650; }
.staff-bar small { display: block; color: var(--muted); font-weight: 400; }
.dev-id { font-family: var(--mono); font-weight: 700; letter-spacing: .03em; }
.online-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; background: var(--faint); }
.online-dot.on { background: #22c55e; box-shadow: 0 0 0 3px rgba(34, 197, 94, .22); }

.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translate(-50%, 12px); z-index: 60; max-width: calc(100% - 32px);
  padding: 11px 18px; border-radius: var(--r-md); font-weight: 600; font-size: .9rem;
  background: rgba(17, 24, 39, .96); color: #fff; box-shadow: var(--shadow-pop);
  border: 1px solid var(--line);
  opacity: 0; pointer-events: none; transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: #b91c1c; border-color: transparent; }
.toast.ok { background: #15803d; border-color: transparent; }

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass, .card, .stat, .qr-item { background: rgba(10, 18, 32, .92); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
  .reader.live .aim::after { display: none; }
}