:root{
  --navy-950:#0a1526;
  --navy-800:#132844;
  --blue-600:#1d5fe0;
  --blue-500:#2f74f2;
  --paper:#f3f6fb;
  --ink:#0b1626;
  --ink-soft:#4a5670;
  --ink-faint:#8b96ac;
  --line:rgba(11,22,38,.12);
  --ok:#1d7d4c;
  --ok-bg:#e6f6ee;
  --warn:#a9660d;
  --warn-bg:#fdf1de;
  --err:#b3261e;
  --err-bg:#fce8e6;
  --sidebar-w:260px;
  --header-h:60px;
}
*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Be Vietnam Pro',-apple-system,'Segoe UI',Roboto,sans-serif;
  line-height:1.5;
}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}

/* ============ Pre-auth pages (login, forgot password) ============ */
.auth-header{
  background:var(--navy-950);color:#fff;padding:16px 24px;
  display:flex;align-items:center;
}
.auth-header .app-brand{color:#fff}
.auth-wrap{max-width:420px;margin:60px auto 0;padding:0 20px}
.login-logo{display:block;height:150px;width:auto;margin:0 auto 20px}

/* ============ App shell: alert banner + top header + sidebar + main ============ */
.app-shell{min-height:100vh;display:flex;flex-direction:column}

.alert-banner{
  display:none;align-items:center;gap:10px;
  background:linear-gradient(90deg,var(--err),#932019);color:#fff;
  padding:10px 20px;font-size:.86rem;position:relative;z-index:120;
}
.alert-banner.show{display:flex}
.alert-banner .dot{width:7px;height:7px;border-radius:99px;background:#fff;flex:none;animation:pulse-dot 1.8s ease-in-out infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.35}}
.alert-banner p{flex:1;min-width:0;margin:0}
.alert-banner p b{font-weight:700}
.alert-banner a.btn-quick{
  flex:none;background:rgba(255,255,255,.18);color:#fff;border-radius:6px;
  padding:.4em .9em;font-weight:600;font-size:.82rem;white-space:nowrap;
}
.alert-banner a.btn-quick:hover{background:rgba(255,255,255,.28);text-decoration:none}
.alert-banner .close-alert{flex:none;color:rgba(255,255,255,.7);cursor:pointer;background:none;border:none;padding:2px}
.alert-banner .close-alert:hover{color:#fff}

.app-topheader{
  height:var(--header-h);background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:14px;padding:0 20px;
  position:sticky;top:0;z-index:110;
}
.sidebar-toggle{
  display:none;background:none;border:1.5px solid var(--line);border-radius:8px;
  color:var(--ink-soft);font-size:1.1rem;padding:.35em .6em;cursor:pointer;flex:none;
}
.app-brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:1rem;color:var(--ink);flex:none}
.app-brand:hover{text-decoration:none;opacity:.85}
.app-brand img{height:26px;width:auto;display:block}
.app-brand span{color:var(--blue-600)}
.header-spacer{flex:1}
.header-user{display:flex;align-items:center;gap:10px;flex:none}
.header-avatar{
  width:34px;height:34px;border-radius:50%;background:var(--navy-950);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.8rem;flex:none;
}
.header-user-meta{display:none;line-height:1.25}
.header-user-name{font-size:.85rem;font-weight:600;color:var(--ink)}
.role-badge{
  display:inline-block;margin-top:2px;padding:.15em .5em;border-radius:5px;
  background:rgba(29,95,224,.1);color:var(--blue-600);font-size:.68rem;font-weight:700;
}

.app-body{flex:1;display:flex;min-height:0}

.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(10,21,38,.5);z-index:130}
.sidebar-overlay.show{display:block}

.app-sidebar{
  width:var(--sidebar-w);flex:none;background:var(--navy-950);color:#c7d3ea;
  position:fixed;top:0;left:0;height:100vh;z-index:140;
  transform:translateX(-100%);transition:transform .18s ease,width .18s ease;
  display:flex;flex-direction:column;
}
.app-sidebar.show{transform:translateX(0)}
.sidebar-mobile-head{
  height:var(--header-h);display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;border-bottom:1px solid rgba(255,255,255,.08);flex:none;
}
.sidebar-mobile-head .app-brand{color:#fff}
.sidebar-close{background:none;border:none;color:#c7d3ea;cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center}
.sidebar-close:hover{color:#fff}
.sidebar-close svg{width:18px;height:18px;display:block}

.sidebar-nav{flex:1;overflow-y:auto;padding:14px 12px}
.sidebar-nav::-webkit-scrollbar{width:6px}
.sidebar-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}

.nav-section-label{padding:14px 10px 6px;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#5c6b8a}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:9px 10px;border-radius:8px;
  font-size:.87rem;font-weight:500;color:#c7d3ea;margin-bottom:2px;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav-item.active{background:rgba(29,95,224,.22);color:#fff;font-weight:600}
.nav-item .nav-icon{width:18px;height:18px;flex:none;opacity:.85}
.nav-item.active .nav-icon{opacity:1}
.nav-item .nav-label{flex:1;min-width:0}
.nav-badge{
  flex:none;min-width:19px;height:19px;padding:0 6px;border-radius:99px;
  background:rgba(255,255,255,.12);color:#c7d3ea;font-size:.68rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.nav-badge.warn{background:rgba(240,180,41,.22);color:#f5c869}
.nav-badge.err{background:rgba(255,90,79,.22);color:#ff8f85}

.sidebar-foot{padding:12px;border-top:1px solid rgba(255,255,255,.08);flex:none}
.sidebar-user{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;background:rgba(255,255,255,.04)}
.sidebar-user .header-avatar{width:30px;height:30px;font-size:.72rem}
.sidebar-user-name{font-size:.78rem;font-weight:600;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-user-email{font-size:.7rem;color:#7c869c;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-logout{color:#ff8f85;font-size:.78rem;font-weight:600;flex:none}
.sidebar-logout:hover{color:#fff;text-decoration:none}

.app-main{flex:1;min-width:0;padding:20px;max-width:1440px}

/* ============ Shared components ============ */
.back-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.88rem;font-weight:600;color:var(--ink-soft);margin-bottom:16px;
}
.back-link:hover{color:var(--blue-600);text-decoration:none}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;transition:box-shadow .12s ease,border-color .12s ease}
.stat-card:hover{box-shadow:0 4px 14px rgba(11,22,38,.06);border-color:#d7dfec}
.stat-card .stat-head{display:flex;align-items:flex-start;justify-content:space-between}
.stat-card .num{font-size:1.55rem;font-weight:700;font-family:'JetBrains Mono',ui-monospace,monospace}
.stat-card .label{color:var(--ink-soft);font-size:.8rem;margin-top:4px}
.stat-card .sub{color:var(--ink-faint);font-size:.74rem;margin:6px 0 0;padding:0}
.stat-card.warn .num{color:var(--warn)}
.stat-card.err .num{color:var(--err)}
.stat-card.ok .num{color:var(--ok)}
.stat-icon{width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex:none}
.stat-icon.blue{background:rgba(29,95,224,.1);color:var(--blue-600)}
.stat-icon.ok{background:var(--ok-bg);color:var(--ok)}
.stat-icon.warn{background:var(--warn-bg);color:var(--warn)}
.stat-icon.err{background:var(--err-bg);color:var(--err)}

.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  padding:22px;
  margin-bottom:18px;
}

h1{font-size:1.4rem;margin:0 0 6px}
h2{font-size:1.05rem;margin:0 0 14px}
.sub{color:var(--ink-soft);font-size:.9rem;margin-bottom:20px}

label{display:block;font-size:.85rem;font-weight:600;color:var(--ink-soft);margin-bottom:6px;margin-top:14px}
input,select{
  width:100%;
  padding:.65em .8em;
  border-radius:7px;
  border:1.5px solid var(--line);
  font-size:.92rem;
  font-family:inherit;
}
input:focus,select:focus{outline:none;border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(29,95,224,.12)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.68em 1.3em;border-radius:7px;border:1.5px solid transparent;
  background:var(--blue-600);color:#fff;font-weight:600;font-size:.88rem;
  cursor:pointer;text-decoration:none;
}
.btn:hover{background:var(--blue-500);text-decoration:none}
.btn.block{width:100%;margin-top:20px}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--blue-600);color:var(--blue-600)}
.btn.small{padding:.42em .85em;font-size:.8rem}
.btn.danger{background:var(--err)}
.btn.danger:hover{background:#932019}
.btn[disabled]{opacity:.6;cursor:not-allowed}

.msg{padding:.7em .9em;border-radius:8px;font-size:.87rem;margin-top:14px;display:none}
.msg.show{display:block}
.msg.err{background:var(--err-bg);color:var(--err)}
.msg.ok{background:var(--ok-bg);color:var(--ok)}

.pill{
  display:inline-flex;align-items:center;gap:5px;padding:.28em .7em;border-radius:99px;
  font-size:.75rem;font-weight:600;letter-spacing:.02em;
}
.pill::before{content:"";width:5px;height:5px;border-radius:99px;background:currentColor;opacity:.7}
.pill.trial{background:var(--warn-bg);color:var(--warn)}
.pill.active{background:var(--ok-bg);color:var(--ok)}
.pill.expired{background:var(--err-bg);color:var(--err)}
.pill.locked{background:#eee;color:#555}

.kv{display:grid;grid-template-columns:160px 1fr;gap:10px 16px;font-size:.9rem}
.kv dt{color:var(--ink-soft)}
.kv dd{margin:0;font-family:'JetBrains Mono',ui-monospace,monospace;word-break:break-all}

table{width:100%;border-collapse:collapse;font-size:.86rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{color:var(--ink-faint);font-weight:700;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;background:var(--paper)}
tbody tr:hover{background:#fafbfe}
tr:last-child td{border-bottom:none}
td .actions{display:flex;gap:8px}
/* Ghim cột đầu tiên khi bảng phải cuộn ngang (tablet / bảng nhiều cột) */
th:first-child,td:first-child{position:sticky;left:0}
th:first-child{background:var(--paper);z-index:2}
td:first-child{background:#fff;z-index:1}
tbody tr:hover td:first-child{background:#fafbfe}

.copy-row{display:flex;gap:8px;align-items:center}
.copy-row input{font-family:'JetBrains Mono',ui-monospace,monospace}

.empty-state{text-align:center;padding:40px 20px;color:var(--ink-faint);font-size:.9rem}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ Responsive ============ */
@media (min-width:640px){
  .header-user-meta{display:block}
}
@media (min-width:1024px){
  .sidebar-toggle{display:none !important}
  .sidebar-overlay{display:none !important}
  .app-sidebar{position:sticky;top:var(--header-h);transform:none;height:calc(100vh - var(--header-h));overflow:hidden}
  .app-body{padding-left:0}
  .app-main{padding:26px 32px}
  body.sidebar-collapsed .app-sidebar{width:0;border:none}
  body.sidebar-collapsed .sidebar-toggle{display:inline-flex !important}
  .sidebar-mobile-head .app-brand{display:none}
  .sidebar-mobile-head{position:absolute;top:0;right:0;height:auto;padding:16px 14px;border-bottom:none;z-index:5}
}
@media (max-width:1023px){
  .sidebar-toggle{display:inline-flex}
  .app-sidebar{box-shadow:0 0 40px rgba(0,0,0,.3)}
}

/* Tablet / điện thoại ngang: thu form nhiều cột xuống 2 cột thay vì giữ nguyên như desktop */
@media (max-width:900px){
  .form-grid{grid-template-columns:repeat(2,1fr) !important}
}

@media (max-width:640px){
  .app-topheader{padding:0 14px;gap:10px}
  .app-brand span{display:none}
  .app-main{padding:16px}
  .card{padding:16px}
  h1{font-size:1.2rem}

  .form-grid,.item-row,.kv,[style*="grid-template-columns"]{grid-template-columns:1fr !important}
  .form-grid>*{grid-column:auto !important}
  .item-row{gap:6px !important}
  .item-row .btn{width:100%}
  .item-row-header{display:none !important}
  .kv dt{margin-top:12px}
  .kv dt:first-child{margin-top:0}

  /* Bảng dữ liệu -> dạng thẻ xếp dọc (mỗi dòng 1 thẻ, nhãn cột lấy từ ::before theo từng trang) */
  table{border:none;font-size:.86rem}
  thead{display:none}
  tbody{display:block}
  tr{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:2px 14px;margin-bottom:10px}
  tbody tr:hover{background:#fff}
  td{display:flex;justify-content:space-between;align-items:center;gap:14px;text-align:right;padding:10px 0;border-bottom:1px solid var(--line);position:static}
  td:last-child{border-bottom:none}
  td::before{flex:none;text-align:left;font-weight:600;color:var(--ink-soft);font-size:.7rem;text-transform:uppercase;letter-spacing:.03em;margin-right:10px}
  td[data-label]::before{content:attr(data-label)}
  td[colspan]{display:block;text-align:center;padding:22px 0}
  td[colspan]::before{content:none !important}

  .btn.block,form > .btn{width:100%}
  .alert-banner{padding:9px 14px;font-size:.8rem}
  .alert-banner .btn-quick{padding:.35em .7em}
}