/* KH EDUCATION — Ngân hàng đề V5: đa môn, clipboard, nhập hàng loạt */
.nhd-v5-subject-tabs{display:grid;grid-template-columns:150px repeat(auto-fit,minmax(130px,1fr));gap:9px;align-items:stretch;margin:0 0 13px;padding:12px;border:1px solid #DDE5F0;border-radius:17px;background:#fff}.nhd-v5-subject-tabs>span{display:flex;flex-direction:column;justify-content:center;padding:4px 8px;color:#1F3864}.nhd-v5-subject-tabs>span small{font-size:9px;letter-spacing:.9px;color:#8795AA}.nhd-v5-subject-tabs>span b{font-size:15px;margin-top:3px}.nhd-v5-subject-tabs button{border:1px solid #D8E1ED;background:#F7F9FC;border-radius:13px;padding:10px 12px;text-align:left;color:#1F3864;display:flex;flex-direction:column;gap:3px;min-width:0}.nhd-v5-subject-tabs button:hover{background:#EEF4FB;border-color:#B5C9E2}.nhd-v5-subject-tabs button b{font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nhd-v5-subject-tabs button small{font-size:9.5px;color:#8494AC}.nhd-v5-subject-tabs button.on{background:#1F3864;border-color:#1F3864;color:#fff}.nhd-v5-subject-tabs button.on small{color:rgba(255,255,255,.75)}
.nhd-v5-browser-subject{margin-bottom:10px}

.nhd-v5-paste-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:12px 0}.nhd-v5-paste-zone{min-height:112px;border:1.5px dashed #9FB3CE;border-radius:15px;background:#F8FAFD;padding:16px;display:flex;flex-direction:column;justify-content:center;gap:5px;outline:none;cursor:text}.nhd-v5-paste-zone:hover,.nhd-v5-paste-zone:focus{border-color:#2E74B5;background:#EEF5FD;box-shadow:0 0 0 3px rgba(46,116,181,.09)}.nhd-v5-paste-zone b{color:#1F3864;font-size:13px}.nhd-v5-paste-zone span{font-size:11px;color:#5F6E83;line-height:1.4}.nhd-v5-paste-zone small{font-size:9.5px;color:#8A98AB;margin-top:5px}

.nhd-v5-bulk-layout{display:grid;grid-template-columns:minmax(430px,.9fr) minmax(500px,1.1fr);gap:14px;align-items:start}.nhd-v5-bulk-text{min-height:380px!important;font-family:Consolas,"Courier New",monospace!important;font-size:11.5px!important;line-height:1.45!important;white-space:pre-wrap}.nhd-v5-bulk-list{display:flex;flex-direction:column;gap:8px;max-height:630px;overflow:auto;padding-right:3px}.nhd-v5-bulk-list article{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:5px 10px;border:1px solid #E1E7F0;border-radius:12px;padding:10px 11px;background:#fff}.nhd-v5-bulk-list article>b{font-family:"Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;font-size:12pt;font-weight:400;line-height:1.35;color:#1F3864}.nhd-v5-bulk-list article>small{grid-column:1/-1;color:#7A899E;font-size:10px}.nhd-v5-bulk-list article>span{align-self:start;border-radius:999px;padding:4px 8px;font-size:9px;font-weight:750}.nhd-v5-bulk-list .ok{background:#EAF5EC;color:#2F6D42}.nhd-v5-bulk-list .warn{background:#FFF1E8;color:#9A4A25}.nhd-file-button{border:1px dashed #A8B8CC;border-radius:12px;min-height:46px;display:flex;align-items:center;justify-content:center;color:#1F3864;font-size:11.5px;font-weight:700;background:#F8FAFD;cursor:pointer}.nhd-file-button input{display:none}

.nhd-v5-subject-admin{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.nhd-v5-subject-admin>div{display:grid;grid-template-columns:190px minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 11px;border:1px solid #E3E9F1;border-radius:12px}.nhd-v5-subject-admin b{color:#1F3864}.nhd-v5-subject-admin small{color:#75849A;line-height:1.4}.nhd-v5-font-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:12px}.nhd-v5-font-grid label{border:1px solid #DDE5F0;border-radius:13px;padding:12px;background:#F8FAFD;display:flex;flex-direction:column;gap:4px}.nhd-v5-font-grid b{color:#1F3864}.nhd-v5-font-grid span{font-size:10px;color:#7F8DA1}.nhd-v5-font-grid input{margin-top:7px;max-width:100%;font-size:10px}

/* Toàn bộ nội dung câu, đáp án, lời giải dùng Palatino 12pt. UI quản trị vẫn Segoe UI. */
.nhd-question-font,.nhd-math-text,.nhd-pre-option,.nhd-pre-solution,.nhd-ai-draft ol,.nhd-exam-preview article p,.nhd-v4-table .nhd-stem,.nhd-question-main-text{font-family:"Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif!important;font-size:12pt!important;line-height:1.5}.nhd-question-font strong em,.nhd-question-font em strong,.nhd-math-text strong em,.nhd-math-text em strong,.nhd-pre-option strong em,.nhd-pre-option em strong,.nhd-pre-solution strong em,.nhd-pre-solution em strong{font-weight:400!important;font-style:italic!important;font-synthesis:none!important}.nhd-question-font,.nhd-math-text,.nhd-pre-option,.nhd-pre-solution,.nhd-ai-draft,.nhd-exam-preview{font-synthesis:none}

@media(max-width:1050px){.nhd-v5-bulk-layout{grid-template-columns:1fr}.nhd-v5-subject-tabs{grid-template-columns:130px repeat(3,minmax(110px,1fr))}.nhd-v5-paste-grid{grid-template-columns:1fr}.nhd-v5-font-grid{grid-template-columns:1fr}}
@media(max-width:720px){.nhd-v5-subject-tabs{grid-template-columns:1fr 1fr}.nhd-v5-subject-tabs>span{grid-column:1/-1}.nhd-v5-subject-admin>div{grid-template-columns:1fr}.nhd-v5-bulk-text{min-height:280px!important}}