:root{--nx-violet:#5844da;--nx-ink:#18203e;--nx-gray:#65718b;--nx-line:#e8edf5;--nx-bg:#f6f9ff;--nx-white:#fff;--nx-shadow:0 12px 40px rgba(28,49,90,.06)}
*{box-sizing:border-box}body.v7{margin:0;background:var(--nx-bg);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--nx-ink)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}
.v7-layout{display:grid;grid-template-columns:252px minmax(0,1fr);min-height:100vh}.v7-sidebar{background:#fff;border-right:1px solid var(--nx-line);padding:24px 14px;display:flex;flex-direction:column;gap:22px;position:sticky;top:0;height:100vh;overflow:auto}.v7-logo{display:flex;align-items:center;gap:9px;font-size:18px;font-weight:850;letter-spacing:-.5px;padding:4px 8px;color:#192248}.v7-logo img{width:41px;height:41px}.v7-logo b{color:#6654ed}.v7-label{color:#8390a6;text-transform:uppercase;font-size:11px;font-weight:800;letter-spacing:.14em;padding:8px 12px}.v7-links{display:grid;gap:4px}.v7-nav{border:0;background:transparent;text-align:left;border-radius:12px;padding:12px 14px;color:#53617c;font-weight:650;display:flex;align-items:center;gap:12px}.v7-nav:hover,.v7-nav.active{color:#4d3ae1;background:#eeecff}.v7-nav span{font-size:20px}.v7-side-bottom{margin-top:auto;border-top:1px solid var(--nx-line);padding-top:14px;display:grid;gap:10px}.v7-logout{background:#fff1f0;color:#b53c41;border:0;padding:11px;border-radius:9px;font-weight:750}.v7-main{min-width:0}.v7-top{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:19px 30px;border-bottom:1px solid var(--nx-line);background:#fff}.v7-top h2{font-size:18px;letter-spacing:-.3px;margin:0}.v7-user{display:flex;align-items:center;gap:12px;color:#56627a;font-size:13px}.v7-avatar{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:linear-gradient(130deg,#4b61fc,#9564e9);font-weight:800;color:#fff}.v7-mainbody{padding:30px;max-width:1440px;margin:auto}.v7-head{margin-bottom:22px;display:flex;align-items:start;justify-content:space-between;gap:12px}.v7-head h1{font-size:28px;letter-spacing:-.8px;margin:0 0 5px}.v7-muted{color:var(--nx-gray)}.v7-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.v7-card{background:#fff;border:1px solid var(--nx-line);border-radius:18px;padding:21px;box-shadow:var(--nx-shadow);min-width:0}.v7-kpi{font-size:31px;font-weight:830;letter-spacing:-1px;margin:8px 0}.v7-pill{display:inline-block;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:700;background:#eff4ff;color:#4b61b0}.v7-pill.approved,.v7-pill.active,.v7-pill.paid{background:#e7faf1;color:#177a53}.v7-pill.pending{background:#fff6e1;color:#99641b}.v7-pill.rejected{background:#ffedef;color:#b74458}.v7-flex{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.v7-two{display:grid;grid-template-columns:2fr 1fr;gap:18px}.v7-tablewrap{overflow:auto;background:#fff;border:1px solid var(--nx-line);border-radius:16px;box-shadow:var(--nx-shadow)}.v7-table{border-collapse:collapse;width:100%;min-width:700px;font-size:13px}.v7-table th,.v7-table td{padding:13px 15px;border-bottom:1px solid var(--nx-line);text-align:left;vertical-align:top}.v7-table th{background:#f8faff;font-weight:800;color:#55617a}.v7-table tr:last-child td{border-bottom:0}.v7-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:10px;padding:10px 15px;border:1px solid #dde2f0;background:#fff;color:#35405c;font-weight:760}.v7-btn:hover{filter:brightness(.96)}.v7-btn.primary{background:linear-gradient(110deg,#3c65fa,#684ce8);color:#fff;border-color:transparent}.v7-btn.danger{color:#b9364d;border-color:#f4b8c3}.v7-btn.small{padding:6px 10px;border-radius:8px;font-size:12px}.v7-btn:focus-visible,.v7-nav:focus-visible{outline:3px solid #8a90ff;outline-offset:2px}.v7-field{display:grid;gap:5px;font-size:13px;font-weight:700;color:#44516c}.v7-field input,.v7-field textarea,.v7-field select,.v7-input{border:1px solid #d8dfeb;border-radius:10px;min-height:42px;padding:9px 12px;width:100%;background:#fff;color:#18203e}.v7-field textarea{min-height:102px;resize:vertical}.v7-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.v7-wide{grid-column:1/-1}.v7-section{margin:24px 0 13px;font-size:19px;font-weight:800}.v7-coursegrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.v7-course{padding:0;overflow:hidden}.v7-course img{height:132px;width:100%;object-fit:cover;background:#eef3ff}.v7-course > div{padding:17px}.v7-course h3{font-size:16px;line-height:1.35;margin:8px 0}.v7-course p{font-size:13px;min-height:40px;margin:8px 0;color:var(--nx-gray)}.v7-bar{height:7px;border-radius:9px;background:#edf0fa;overflow:hidden}.v7-bar span{display:block;background:linear-gradient(90deg,#456aff,#53c3bc);height:100%}.v7-notice{padding:12px 15px;background:#eef2ff;border:1px solid #dbe3ff;color:#3c4c8a;border-radius:12px;margin:15px 0}.v7-danger{background:#fff1f2;border-color:#ffd4df;color:#a0344a}.v7-success{background:#e9fff2;border-color:#bcf5d8;color:#24774e}.v7-panel{display:grid;gap:14px}.v7-dialog{position:fixed;inset:0;background:#111c39a6;display:grid;place-items:center;z-index:999;padding:20px}.v7-dialog[hidden]{display:none}.v7-modal{width:min(750px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:19px;padding:25px;box-shadow:0 25px 90px #1113}.v7-modal h2{margin:0 0 12px}.v7-close{float:right;border:0;background:#e7ebf3;border-radius:10px;padding:8px 12px}.v7-lesson{display:grid;grid-template-columns:240px minmax(0,1fr);gap:20px}.v7-syllabus{align-self:start;position:sticky;top:20px;max-height:75vh;overflow:auto}.v7-syllabus button{border:0;padding:10px 8px;display:block;text-align:left;width:100%;background:none;border-bottom:1px solid #eef0f6;color:#465575}.v7-syllabus button:hover{background:#f2f5ff}.v7-article{font-size:16px;line-height:1.8}.v7-article img{max-width:100%;border-radius:12px}.v7-article h2{font-size:22px;margin:22px 0 7px}.v7-tick{display:flex;align-items:flex-start;gap:7px;margin:9px 0}.v7-auth-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(115deg,#edf3ff,#f8f2ff);padding:20px}.v7-authbox{display:grid;grid-template-columns:1fr 1fr;width:min(980px,100%);min-height:530px;border-radius:24px;overflow:hidden;box-shadow:0 22px 80px #223b701a;background:#fff}.v7-auth-art{background:#17244d;color:#fff;padding:36px;display:flex;flex-direction:column;justify-content:space-between}.v7-auth-art img{width:100%;max-height:300px;object-fit:contain}.v7-auth-art h1{font-size:34px;line-height:1.15}.v7-auth-form{padding:42px;display:flex;flex-direction:column;justify-content:center;gap:15px}.v7-auth-form h2{margin:0;font-size:27px}.v7-toast{position:fixed;bottom:18px;right:18px;z-index:1001;padding:12px 18px;border-radius:10px;background:#15254a;color:white;box-shadow:0 10px 25px #0002;max-width:400px}.v7-link{color:#4a55dd;font-weight:700}.v7-mobile-toggle{display:none}@media(max-width:1150px){.v7-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.v7-coursegrid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:780px){.v7-layout{display:block}.v7-sidebar{position:fixed;z-index:300;left:0;top:0;width:255px;transform:translateX(-102%);transition:transform .25s;box-shadow:0 0 0 999px transparent}.v7-sidebar.open{transform:translateX(0);box-shadow:0 0 0 999px #1118}.v7-mobile-toggle{display:inline-flex}.v7-mainbody{padding:18px}.v7-top{padding:14px}.v7-head h1{font-size:23px}.v7-two,.v7-lesson,.v7-authbox{grid-template-columns:1fr}.v7-syllabus{position:static;max-height:240px}.v7-auth-art{display:none}.v7-auth-form{padding:28px 22px}.v7-form{grid-template-columns:1fr}}@media(max-width:520px){.v7-grid,.v7-coursegrid{grid-template-columns:1fr}.v7-table{min-width:650px}.v7-head{flex-direction:column}}

/* NEXA DIGITAL V8 feature modules */
.v8-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(245px,1fr));gap:17px}.v8-feature{padding:25px;background:linear-gradient(155deg,#fff,#f8fbff);border:1px solid #e2e9f5;border-radius:20px;box-shadow:0 12px 30px #2435650a;display:flex;align-items:flex-start;flex-direction:column;gap:11px}.v8-feature h3{font-size:19px;line-height:1.3;margin:0}.v8-feature p{margin:0 0 12px;color:#61708a;flex:1}.v8-emoji{width:56px;height:56px;display:grid;place-items:center;font-size:29px;border-radius:15px;background:linear-gradient(145deg,#e8edff,#dcfff3)}.v8-editor{max-width:860px}.v8-history{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:12px 0;border-bottom:1px solid #e7edf5}.v8-history:last-child{border:0}.v8-history span{font-weight:800;color:#166e5b}.v8-history small{color:#64748b}.v8-share{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:18px;background:#f7f9fe;padding:12px;border-radius:12px}.v8-share input{flex:1;min-width:150px}.v7-card h3{overflow-wrap:anywhere}#bulkResult{margin-top:20px}.v8-feature .v7-btn{margin-top:auto}

/* V12 optional bilingual video lessons */
.v12-video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:15px;margin-top:18px}
.v12-video-box{border:1px solid #dbe5f0;padding:18px;border-radius:14px;background:var(--card,#fff);min-width:0}
.v12-video-box h3{margin-top:0}.v12-video-box .v7-field{margin:10px 0}.v12-upload input[type=file]{width:100%;max-width:100%}.v12-player{padding:16px;margin:15px 0;border:1px solid #cbdaf1;border-radius:16px;background:#f5f9ff}.v12-player h3{margin:0 0 12px}