:root{
  --vp-blue:#075c9e;
  --vp-blue-2:#0c79bd;
  --vp-cyan:#08a7af;
  --vp-red:#e62b59;
  --vp-ink:#092d4a;
  --vp-muted:#617b91;
  --vp-line:#d5e4ee;
  --vp-soft:#eef7fb;
  --vp-white:#fff;
  --vp-shadow:0 24px 70px rgba(4,55,91,.2);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--vp-ink);
}
*{box-sizing:border-box}
html,body{min-height:100%;margin:0}
body{background:linear-gradient(135deg,#07599e 0%,#0878b7 55%,#09a3aa 100%);font-size:15px}
button,input,select{font:inherit}
button{cursor:pointer}
[hidden]{display:none!important}
.auth-background{position:fixed;inset:0;overflow:hidden;pointer-events:none}
.auth-background span{position:absolute;border-radius:50%;background:rgba(255,255,255,.08);filter:blur(1px)}
.auth-background span:nth-child(1){width:420px;height:420px;left:-170px;top:-150px}
.auth-background span:nth-child(2){width:300px;height:300px;right:-80px;bottom:-70px}
.auth-background span:nth-child(3){width:140px;height:140px;right:17%;top:12%;border:1px solid rgba(255,255,255,.14);background:transparent}
.auth-shell{position:relative;z-index:1;min-height:calc(100vh - 42px);display:grid;place-items:center;padding:42px 20px}
.auth-card{width:min(100%,520px);background:#fff;border:1px solid rgba(255,255,255,.55);border-radius:24px;box-shadow:var(--vp-shadow);overflow:hidden}
.auth-card:before{content:"";display:block;height:5px;background:linear-gradient(90deg,var(--vp-blue),var(--vp-cyan) 72%,var(--vp-red))}
.auth-brand{display:flex;align-items:center;gap:18px;padding:26px 30px 21px;border-bottom:1px solid #e6eff5}
.auth-brand img{width:126px;height:auto;object-fit:contain;flex:0 0 auto}
.auth-brand div{min-width:0;padding-left:18px;border-left:1px solid #d5e4ed}
.auth-brand strong{display:block;color:#064f89;font-size:16px;line-height:1.35}
.auth-brand span{display:block;color:#72889a;font-size:11px;margin-top:4px}
.auth-view{padding:26px 30px 30px}
.auth-heading{margin-bottom:20px}
.auth-heading.centered{text-align:center}
.auth-kicker{display:block;color:var(--vp-blue-2);font-size:11px;line-height:1.4;font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.auth-heading h1,.status-view h1{margin:5px 0 6px;color:var(--vp-ink);font-size:27px;line-height:1.2}
.auth-heading p,.status-view>p{margin:0;color:var(--vp-muted);line-height:1.55}
form{display:grid;gap:15px}
label{display:grid;gap:7px;color:#244b68;font-size:12.5px;font-weight:800}
input,select{width:100%;min-height:46px;padding:0 13px;border:1px solid #cbdde9;border-radius:11px;background:#f9fcfe;color:#123c5b;outline:none;transition:border-color .16s,box-shadow .16s,background .16s}
input::placeholder{color:#98aaba}
input:focus,select:focus{border-color:#4aa5d4;background:#fff;box-shadow:0 0 0 4px rgba(10,125,190,.11)}
.password-field{position:relative;display:block}
.password-field input{padding-right:62px}
.password-toggle{position:absolute;right:5px;top:5px;height:36px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:#0872b3;font-size:11px;font-weight:900}
.password-toggle:hover{background:#eaf5fb}
.primary-button,.secondary-button{width:100%;min-height:46px;border-radius:11px;font-weight:900;transition:transform .15s,box-shadow .15s,background .15s}
.primary-button{border:0;background:linear-gradient(100deg,#075bab,#0a84bf);color:#fff;box-shadow:0 10px 22px rgba(7,95,158,.2)}
.primary-button:hover{transform:translateY(-1px);box-shadow:0 13px 27px rgba(7,95,158,.25)}
.primary-button:disabled{opacity:.6;cursor:wait;transform:none}
.secondary-button{border:1px solid #c9deeb;background:#fff;color:#075b98}
.secondary-button:hover{background:#f0f8fc}
.secondary-button.compact{width:auto;min-height:38px;padding:0 14px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;font-size:12px}
.text-button{display:block;margin:13px auto 0;border:0;background:transparent;color:#0672b6;font-size:12px;font-weight:850}
.auth-switch{margin-top:20px;padding-top:17px;border-top:1px solid #e5eef4;text-align:center;color:#6b8192;font-size:12.5px}
.auth-switch button{border:0;background:transparent;color:#0568a9;font-weight:900}
.form-message{min-height:0;margin:0;color:#b32342;font-size:12px;line-height:1.45;font-weight:700}
.form-message:empty{display:none}
.form-message.success{display:block;padding:10px 12px;border:1px solid #aee2c6;border-radius:9px;background:#eefbf4;color:#08764b}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field-wide{grid-column:1/-1}
.privacy-note,.audit-note{margin:0;padding:10px 12px;border-radius:9px;background:#eff7fb;color:#587389;font-size:11px;line-height:1.5}
.status-view{text-align:center;padding-top:28px}
.status-view .primary-button,.status-view .secondary-button{margin-top:13px}
.status-icon{width:58px;height:58px;display:grid;place-items:center;margin:0 auto 14px;border-radius:19px;font-size:25px;font-weight:950}
.status-icon.success{background:#e6f9ef;color:#078051;border:1px solid #afe1c5}
.status-icon.pending{background:#fff4d8;color:#a96b00;border:1px solid #f2d28e}
.status-icon.rejected{background:#fff0f2;color:#c02848;border:1px solid #f2bec8}
.status-icon.neutral{background:#eaf6fc;color:#086ca9;border:1px solid #b9deef}
.profile-summary{margin:18px 0 4px;padding:13px 16px;border:1px solid #d6e6ef;border-radius:12px;background:#f8fbfd;text-align:left;color:#345b75;line-height:1.65;font-size:12px}
.profile-summary b{color:#0b3c5f}
.auth-loader{display:grid;place-items:center;gap:7px;padding:60px 30px;color:#54748a;text-align:center}
.auth-loader strong{color:#0a436b}
.auth-loader span{font-size:12px}
.auth-spinner{width:38px;height:38px;margin-bottom:7px;border:4px solid #dcebf3;border-top-color:#087ab8;border-radius:50%;animation:auth-spin .8s linear infinite}
@keyframes auth-spin{to{transform:rotate(360deg)}}
.auth-footer{position:relative;z-index:1;min-height:42px;padding:0 20px 18px;color:rgba(255,255,255,.82);text-align:center;font-size:11px}
.admin-mode .auth-shell{display:block;min-height:100vh;padding:0}.admin-mode .auth-footer{display:none}

.admin-shell{position:relative;z-index:1;width:100%;min-height:100vh;background:#f2f7fa;color:var(--vp-ink)}
.admin-header{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 max(24px,calc((100% - 1320px)/2));background:#fff;border-bottom:1px solid #dce8f0;box-shadow:0 4px 16px rgba(10,55,85,.06)}
.admin-brand{display:flex;align-items:center;gap:14px;color:inherit;text-decoration:none}
.admin-brand img{width:92px;height:auto}
.admin-brand span{display:grid;gap:2px;padding-left:14px;border-left:1px solid #d6e4ed}
.admin-brand b{font-size:15px;color:#07598f}.admin-brand small{font-size:10px;color:#72899a}
.admin-user{display:flex;align-items:center;gap:10px}.admin-user>span{max-width:320px;color:#45677d;font-size:12px;font-weight:800}
.admin-content{width:min(1320px,calc(100% - 40px));margin:0 auto;padding:32px 0 50px}
.admin-title{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:22px}
.admin-title h1{margin:5px 0 5px;font-size:30px}.admin-title p{margin:0;color:#658094}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.stat-grid article{padding:18px 20px;border:1px solid #d7e6ef;border-radius:15px;background:#fff;box-shadow:0 7px 20px rgba(20,70,100,.05)}
.stat-grid span{display:block;color:#668095;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}.stat-grid strong{display:block;margin-top:7px;color:#075d98;font-size:30px}
.admin-tabs{display:flex;gap:5px;padding:5px;border:1px solid #d5e5ee;border-radius:13px 13px 0 0;background:#eaf3f7}
.admin-tabs button{padding:11px 17px;border:0;border-radius:9px;background:transparent;color:#577185;font-size:12px;font-weight:900}
.admin-tabs button.active{background:#fff;color:#075e9b;box-shadow:0 3px 10px rgba(10,60,90,.08)}
.admin-panel{display:none;padding:20px;border:1px solid #d5e5ee;border-top:0;border-radius:0 0 15px 15px;background:#fff}.admin-panel.active{display:block}
.admin-filters{display:flex;gap:10px;margin-bottom:16px}.admin-filters input{flex:1}.admin-filters select{width:220px}
.admin-list{display:grid;gap:10px}
.user-row{display:grid;grid-template-columns:minmax(240px,1.35fr) minmax(170px,.9fr) 130px auto;align-items:center;gap:16px;padding:15px;border:1px solid #dbe8ef;border-radius:12px;background:#fbfdfe}
.user-identity{display:flex;align-items:center;gap:12px;min-width:0}.user-avatar{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;border-radius:50%;background:linear-gradient(135deg,#0a69aa,#0aa3ad);color:#fff;font-size:12px;font-weight:950}
.user-identity div,.user-work{min-width:0}.user-identity b,.user-identity span,.user-work b,.user-work span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-identity b{font-size:13px}.user-identity span,.user-work span{margin-top:4px;color:#708597;font-size:11px}.user-work b{font-size:12px;color:#335b75}
.status-badge{justify-self:start;display:inline-flex;padding:6px 9px;border-radius:999px;font-size:10px;font-weight:900}.status-badge.pending{background:#fff4d9;color:#9b6500;border:1px solid #f2d18b}.status-badge.approved{background:#eaf9f1;color:#08784d;border:1px solid #b6e2c9}.status-badge.rejected{background:#fff0f2;color:#b82443;border:1px solid #f1c0ca}
.user-actions{display:flex;justify-content:flex-end;gap:7px}.user-actions button{min-height:34px;padding:0 10px;border-radius:8px;font-size:10.5px;font-weight:900}.approve-action{border:1px solid #a8ddc0;background:#effbf4;color:#08784d}.reject-action{border:1px solid #efbdc7;background:#fff3f4;color:#b12342}.pending-action{border:1px solid #e8cf96;background:#fff9ea;color:#886000}.delete-action{border:1px solid #d99aa7;background:#7e1730;color:#fff}.delete-action:hover,.delete-action:focus-visible{background:#651126;outline:none}
.empty-admin{padding:34px;border:1px dashed #c8dce8;border-radius:12px;color:#6d8596;text-align:center}
.table-scroll{overflow:auto;margin-top:15px;border:1px solid #dce8ef;border-radius:12px}.audit-table{width:100%;min-width:900px;border-collapse:collapse;background:#fff}.audit-table th,.audit-table td{padding:12px 13px;border-bottom:1px solid #e4edf2;text-align:left;vertical-align:top;font-size:11px;line-height:1.45}.audit-table th{background:#f2f8fb;color:#42657d;font-size:10px;text-transform:uppercase;letter-spacing:.05em}.audit-table tbody tr:last-child td{border-bottom:0}.audit-table b{display:block;color:#123f5d}.audit-table small{display:block;color:#758b9b;margin-top:2px}

@media(max-width:900px){.admin-header{height:auto;padding:14px 20px;align-items:flex-start}.admin-user{flex-wrap:wrap;justify-content:flex-end}.stat-grid{grid-template-columns:1fr 1fr}.user-row{grid-template-columns:1fr 1fr}.user-actions{grid-column:1/-1;justify-content:flex-start}}
@media(max-width:600px){.auth-shell{padding:18px 12px}.auth-card{border-radius:18px}.auth-brand{padding:20px;gap:12px}.auth-brand img{width:100px}.auth-brand div{padding-left:12px}.auth-brand strong{font-size:13px}.auth-view{padding:22px 20px 24px}.field-grid{grid-template-columns:1fr}.field-wide{grid-column:auto}.auth-heading h1,.status-view h1{font-size:23px}.admin-brand span{display:none}.admin-header{display:grid}.admin-user{justify-content:flex-start}.admin-content{width:calc(100% - 24px);padding-top:22px}.admin-title{display:grid}.stat-grid{gap:9px}.stat-grid article{padding:13px}.stat-grid strong{font-size:25px}.admin-tabs{overflow:auto}.admin-filters{display:grid}.admin-filters select{width:100%}.user-row{grid-template-columns:1fr}.user-actions{grid-column:auto;flex-wrap:wrap}.user-work{padding-left:54px}}

/* 2026-08-17: tách riêng tài khoản khoa/phòng và tài khoản quản trị */
.admin-global-message{margin:0 0 12px}
.admin-section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin:0 0 14px;padding:0 2px}
.admin-section-heading b{display:block;color:#164c6d;font-size:14px}
.admin-section-heading span{display:block;margin-top:4px;color:#748a99;font-size:11px;line-height:1.5}