/* VƯỜN NGOẠI NGỮ v6.15.412 — teacher-managed student accounts */
.vnn-managed-login-hint{margin:6px 0 10px;padding:9px 11px;border-radius:12px;background:#eff8f5;color:#315c52;font-size:13px;line-height:1.45}
.vnn-managed-login-hint strong{color:#145d50}.vnn-managed-login-hint b{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.vnn-managed-create{margin:0 0 18px;padding:18px;border:1px solid #cfe1db;background:linear-gradient(135deg,#fff,#f5fbf8)}
.vnn-managed-create-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:14px}
.vnn-managed-create-head h2{margin:3px 0 5px;font-size:22px}.vnn-managed-create-head p{margin:0;color:#61756e}
.vnn-safe-chip{white-space:nowrap;padding:7px 10px;border-radius:999px;background:#e9f7f2;color:#176a5c;font-weight:800;font-size:12px}
.vnn-managed-form{display:grid;grid-template-columns:minmax(220px,2fr) minmax(160px,1fr) minmax(220px,1.5fr);gap:10px;align-items:end}
.vnn-managed-form label{display:grid;gap:5px}.vnn-managed-form label>span{font-size:13px;font-weight:800;color:#425f57}
.vnn-managed-form input[type=text],.vnn-managed-form select,.vnn-managed-actions select{width:100%;min-height:43px;border:1px solid #cbdad5;border-radius:11px;background:#fff;padding:9px 10px;font:inherit}
.vnn-sgk-toggle{display:flex!important;align-items:center;gap:8px;min-height:43px;padding:8px 10px;border:1px dashed #bdd6ce;border-radius:11px;background:#f9fcfb}
.vnn-sgk-toggle input{width:18px;height:18px}.vnn-sgk-toggle span{font-size:14px!important}
.vnn-managed-sgk-fields{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;padding:11px;border-radius:12px;background:#edf8f4;border:1px solid #d2e6df}
.vnn-managed-create-btn{min-height:44px}.vnn-old-test-guide-hidden{display:none!important}
.vnn-credential-card{display:grid;grid-template-columns:1.3fr 1fr 1fr auto;gap:10px;align-items:center;margin:12px 0;padding:13px;border-radius:14px;background:#173f36;color:#fff}
.vnn-credential-card>div{display:grid;gap:3px}.vnn-credential-card span{font-size:11px;text-transform:uppercase;opacity:.72}.vnn-credential-card strong{font-size:16px}.vnn-credential-card .vnn-code,.vnn-credential-card .vnn-password{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.04em}
.vnn-credential-card button{min-height:40px;border:0;border-radius:10px;padding:8px 11px;font-weight:850}.vnn-credential-card small{grid-column:1/-1;color:#d4e5df}
.vnn-managed-list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:15px;border-top:1px solid #d9e6e1}
.vnn-managed-list-head>div{display:grid;gap:2px}.vnn-managed-list-head small{color:#698078}.vnn-managed-list-head button{min-height:38px}
.vnn-managed-account-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}
.vnn-managed-account{border:1px solid #d7e4df;border-radius:14px;background:#fff;padding:12px;display:grid;gap:10px}
.vnn-managed-account-main{display:flex;gap:10px;align-items:center}.vnn-managed-avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#eaf7f2}
.vnn-managed-account-main>div{display:grid;gap:2px}.vnn-managed-account-main strong{font-size:15px}.vnn-managed-account-main code{font-weight:900;color:#136d5e}.vnn-managed-account-main small{color:#71837d}
.vnn-managed-sgk-status{padding:8px 9px;border-radius:10px;background:#f4f8f7;font-size:13px;font-weight:750;color:#3d6158}
.vnn-managed-actions{display:grid;grid-template-columns:auto minmax(110px,.7fr) minmax(130px,1fr) auto;gap:7px}.vnn-managed-actions button{min-height:40px;border-radius:9px;border:1px solid #cadbd5;background:#fff;font-weight:800;padding:7px 9px}
.vnn-managed-reset-result .vnn-credential-card{grid-template-columns:1fr 1fr auto}
.vnn-student-sgk-assignment{max-width:1200px;margin:12px auto 18px;padding:15px 18px;border-radius:18px;border:1px solid #b9dbd1;background:linear-gradient(135deg,#effaf6,#fff);display:flex;align-items:center;justify-content:space-between;gap:14px;box-shadow:0 7px 20px rgba(29,83,69,.07)}
.vnn-student-sgk-assignment>div{display:grid;gap:3px}.vnn-student-sgk-assignment span{font-size:12px;font-weight:900;color:#16705f}.vnn-student-sgk-assignment strong{font-size:18px;color:#173f36}.vnn-student-sgk-assignment small{color:#61776f}
.vnn-student-sgk-assignment a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 14px;border-radius:12px;background:#117565;color:#fff!important;text-decoration:none!important;font-weight:900;white-space:nowrap}
@media(max-width:860px){.vnn-managed-form{grid-template-columns:1fr 1fr}.vnn-managed-account-grid{grid-template-columns:1fr}.vnn-managed-create-btn{grid-column:1/-1}.vnn-credential-card{grid-template-columns:1fr 1fr}.vnn-credential-card button{grid-column:1/-1}.vnn-managed-sgk-fields{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:600px){.vnn-managed-create{padding:14px}.vnn-managed-create-head{flex-direction:column}.vnn-managed-form{grid-template-columns:1fr}.vnn-managed-sgk-fields{grid-template-columns:1fr}.vnn-managed-create-btn{grid-column:auto}.vnn-credential-card{grid-template-columns:1fr}.vnn-managed-actions{grid-template-columns:1fr}.vnn-managed-list-head{align-items:flex-start}.vnn-student-sgk-assignment{margin:10px 12px 16px;align-items:stretch;flex-direction:column}.vnn-student-sgk-assignment a{width:100%}}

.vnn-sgk-quick-assign{margin-top:14px;padding:12px;border:1px solid #cfe2dc;border-radius:14px;background:#f6fbf9;display:grid;grid-template-columns:1.15fr minmax(180px,1fr) minmax(90px,.55fr) minmax(130px,.75fr) minmax(130px,.9fr) auto;gap:9px;align-items:end}
.vnn-sgk-quick-assign>div{display:grid;gap:2px}.vnn-sgk-quick-assign strong{color:#17493f}.vnn-sgk-quick-assign small{font-size:12.5px;color:#667b74}
.vnn-sgk-quick-assign select{min-height:42px;border:1px solid #cadbd5;border-radius:10px;background:#fff;padding:8px 9px;font:inherit}
@media(max-width:860px){.vnn-sgk-quick-assign{grid-template-columns:1fr 1fr}.vnn-sgk-quick-assign>div{grid-column:1/-1}}
@media(max-width:600px){.vnn-sgk-quick-assign{grid-template-columns:1fr}.vnn-sgk-quick-assign>div{grid-column:auto}}


/* v6.15.409 · class login + detailed SGK tracking */
.vnn-sgk-progress-detail{margin-top:12px;border:1px solid #d7e5df;border-radius:14px;background:#fbfdfc;overflow:hidden}
.vnn-sgk-progress-detail summary{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 12px;cursor:pointer;color:#234f45}
.vnn-sgk-progress-detail summary strong{font-size:14px}.vnn-sgk-progress-detail summary span{font-size:12px;color:#667b73;font-weight:800}
.vnn-sgk-progress-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(165px,1fr));gap:7px;padding:0 12px 12px}
.vnn-sgk-progress-section{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px 8px;padding:9px 10px;border:1px solid #dce8e3;border-radius:11px;background:#fff}
.vnn-sgk-progress-section span{font-size:11px;color:#536f66;font-weight:850;overflow-wrap:anywhere}.vnn-sgk-progress-section b{font-size:17px;color:#17695a}.vnn-sgk-progress-section small{grid-column:1/-1;color:#71827c;font-size:11px}
.vnn-sgk-progress-detail>h4{margin:0;padding:4px 12px 8px;color:#634f3a}
.vnn-sgk-wrong-list{display:grid;gap:7px;padding:0 12px 12px}
.vnn-sgk-wrong-item{display:grid;gap:4px;padding:10px 11px;border:1px solid #ecd5cc;border-radius:11px;background:#fff7f3}
.vnn-sgk-wrong-item b{font-size:11px;color:#8a5549}.vnn-sgk-wrong-item span{font-size:13px;color:#334f47;font-weight:750}.vnn-sgk-wrong-item small{font-size:11px;color:#6f7773}.vnn-sgk-wrong-item small strong{color:#4f5e58}
.vnn-sgk-progress-empty{padding:10px 12px;color:#70817b;font-size:12px}
.vnn-student-password-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.9fr);gap:14px;margin:14px 0;padding:15px 16px;border:1px solid #cfe3dc;border-radius:17px;background:linear-gradient(135deg,#f0faf6,#fff)}
.vnn-student-password-card>div:first-child{display:grid;gap:4px}.vnn-student-password-card>div:first-child span{font-size:11px;font-weight:900;color:#187160}.vnn-student-password-card>div:first-child strong{font-size:18px;color:#173f36}.vnn-student-password-card>div:first-child small{color:#657a73}
.vnn-student-password-fields{display:grid;grid-template-columns:1fr 1fr auto;gap:7px;align-items:center}.vnn-student-password-fields input{min-width:0;border:1px solid #cbded7;border-radius:10px;padding:10px;font:inherit;background:#fff}.vnn-student-password-fields button{min-height:42px;white-space:nowrap}
#vnnStudentPasswordMsg{grid-column:1/-1}
@media(max-width:760px){
 .vnn-student-password-card{grid-template-columns:1fr}
 .vnn-student-password-fields{grid-template-columns:1fr}
 .vnn-sgk-progress-detail summary{align-items:flex-start;flex-direction:column}
 .vnn-sgk-progress-grid{grid-template-columns:1fr}
}

.vnn-sgk-progress-head{margin-top:16px}
.vnn-sgk-student-progress-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:10px;margin:10px 0 18px}
.vnn-sgk-student-progress-card{padding:13px;border:1px solid #d8e4df;border-radius:15px;background:#fff}
.vnn-sgk-student-progress-main{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.vnn-sgk-student-progress-main>div{display:grid;gap:3px}.vnn-sgk-student-progress-main strong{color:#173f36;font-size:15px}.vnn-sgk-student-progress-main small{color:#6a7d76;font-size:11px}
.vnn-sgk-accuracy{display:inline-flex;align-items:center;justify-content:center;min-width:48px;height:30px;padding:0 8px;border-radius:999px;font-weight:900;font-size:12px}
.vnn-sgk-accuracy.good{background:#e7f5ec;color:#2c7045}.vnn-sgk-accuracy.needs-work{background:#fff2ec;color:#8a5144}.vnn-sgk-accuracy.empty{background:#eef2f0;color:#788680}
.vnn-sgk-progress-mini{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:8px}
.vnn-sgk-progress-mini span{padding:7px 8px;border-radius:9px;background:#f5f9f7;color:#60756e;font-size:10px;text-align:center}.vnn-sgk-progress-mini b{display:block;margin-top:2px;color:#234f45;font-size:14px}
@media(max-width:700px){.vnn-sgk-student-progress-grid{grid-template-columns:1fr}}


/* v6.15.412 · production SGK parent-share credentials */
.vnn-credential-card-share{grid-template-columns:repeat(auto-fit,minmax(155px,1fr));align-items:stretch}
.vnn-credential-card-share>div{min-width:0}
.vnn-credential-card-share .vnn-credential-link,
.vnn-credential-card-share .vnn-credential-assignment{grid-column:auto}
.vnn-credential-card-share .vnn-credential-link strong{font-size:14px;word-break:break-word}
.vnn-credential-card-share .vnn-credential-assignment strong{font-size:14px;line-height:1.35}
.vnn-credential-card-share .vnn-copy-parent{background:#fff;color:#16483f;align-self:stretch}
.vnn-credential-card-share small{grid-column:1/-1}
@media(max-width:600px){
  .vnn-credential-card-share{grid-template-columns:1fr}
  .vnn-credential-card-share .vnn-copy-parent{grid-column:1}
}


/* v6.15.414 · multi-grade SGK assignment controls */
.vnn-managed-sgk-fields select,
.vnn-sgk-quick-assign select{min-width:0}
@media(max-width:1050px){
  .vnn-sgk-quick-assign{grid-template-columns:1fr 1fr 1fr}
  .vnn-sgk-quick-assign>div{grid-column:1/-1}
}
@media(max-width:860px){
  .vnn-sgk-quick-assign{grid-template-columns:1fr 1fr}
  .vnn-sgk-quick-assign>div{grid-column:1/-1}
}
@media(max-width:600px){
  .vnn-sgk-quick-assign{grid-template-columns:1fr}
  .vnn-sgk-quick-assign>div{grid-column:auto}
}