:root{--navy:#071522;--navy2:#0d2238;--navy3:#112b43;--green:#22c55e;--green2:#38df78;--white:#f7fafc;--text:#dce7ef;--muted:#8fa2b4;--line:rgba(255,255,255,.09);--panel:#0b1c2b;--panel2:#102638;--danger:#ef4444;--radius:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--navy);color:var(--white);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.55}a{text-decoration:none;color:inherit}img{max-width:100%}.container{width:min(1180px,92%);margin:auto}.topbar{height:76px;position:sticky;top:0;z-index:50;background:rgba(5,16,27,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand img{width:190px;height:54px;object-fit:contain;object-position:left center}.navlinks{display:flex;gap:26px;align-items:center;font-size:.94rem}.navlinks>a:not(.btn){color:#d7e1e9}.navlinks>a:not(.btn):hover{color:var(--green)}.mobile-toggle{display:none;background:none;border:0;color:#fff;font-size:1.4rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 18px;font-weight:750;cursor:pointer;font:inherit}.btn.primary{background:linear-gradient(135deg,var(--green),#1da84f);color:#03120a;box-shadow:0 10px 28px rgba(34,197,94,.18)}.btn.primary:hover{filter:brightness(1.08)}.btn.outline,.btn.ghost{border-color:rgba(255,255,255,.25);color:#fff;background:transparent}.hero{position:relative;overflow:hidden;padding:82px 0 30px;background:radial-gradient(circle at 70% 40%,rgba(34,197,94,.08),transparent 28%),linear-gradient(135deg,#06121e,#091b2b 68%,#0b2031)}.hero:after{content:"";position:absolute;inset:0;opacity:.16;background-image:radial-gradient(rgba(34,197,94,.8) 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(90deg,transparent 35%,#000 90%)}.hero-glow{position:absolute;width:560px;height:170px;background:var(--green);filter:blur(120px);opacity:.08;right:8%;top:34%}.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}.eyebrow,.kicker{color:var(--green2);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.hero h1{font-size:clamp(2.8rem,5.2vw,5.4rem);line-height:1.02;margin:16px 0 22px;letter-spacing:-.045em}.hero h1 span{color:var(--green)}.hero-copy>p{color:#c4d2dd;font-size:1.08rem;max-width:710px}.hero-actions{display:flex;gap:12px;margin-top:28px}.hero-brand{min-height:430px;display:grid;place-items:center;position:relative}.hero-brand img{width:min(390px,80%);filter:drop-shadow(0 28px 60px rgba(0,0,0,.4));z-index:2}.orbit{position:absolute;border:1px solid rgba(34,197,94,.25);border-radius:50%;animation:spin 22s linear infinite}.orbit:after{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:var(--green);top:8%;left:20%;box-shadow:0 0 18px var(--green)}.orbit-one{width:390px;height:390px}.orbit-two{width:290px;height:290px;animation-direction:reverse;animation-duration:16s}@keyframes spin{to{transform:rotate(360deg)}}.stats-strip{position:relative;z-index:3;margin-top:30px;display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:14px;background:rgba(8,26,42,.75);backdrop-filter:blur(10px)}.stats-strip>div{padding:20px;text-align:center;border-right:1px solid var(--line)}.stats-strip>div:last-child{border-right:0}.stats-strip b{display:block;font-size:1.35rem}.stats-strip span{display:block;font-size:.8rem;color:var(--muted)}.section{padding:72px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head h2{font-size:2rem;margin:6px 0 0}.section-head p{color:var(--muted);margin:6px 0 0}.section-head>a{color:var(--green)}.categories{background:#081827}.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}.category-card{border:1px solid var(--line);background:linear-gradient(180deg,#0d2235,#0a1b2a);border-radius:12px;padding:18px;display:flex;gap:12px;align-items:center;transition:.2s}.category-card:hover{transform:translateY(-3px);border-color:rgba(34,197,94,.5)}.category-card i{font-style:normal;color:var(--green);font-size:1.25rem}.course-section{background:#06131f}.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.course-card{background:linear-gradient(180deg,#0d2234,#0a1a28);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}.course-card:hover{transform:translateY(-6px);box-shadow:0 18px 45px rgba(0,0,0,.3);border-color:rgba(34,197,94,.35)}.course-image{height:180px;position:relative;overflow:hidden;background-size:cover}.course-image:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(2,9,15,.85))}.course-image.cyber{background:radial-gradient(circle at 70% 35%,#176e8d,transparent 25%),linear-gradient(135deg,#06141f,#08324a)}.course-image.crime{background:repeating-linear-gradient(-12deg,transparent 0 22px,rgba(241,194,50,.92) 23px 50px,transparent 51px 72px),linear-gradient(135deg,#091b2b,#183142)}.course-image.law{background:radial-gradient(circle at center,#9b6b2d 0 10%,transparent 25%),linear-gradient(135deg,#15100b,#48331d)}.course-image.tactical{background:linear-gradient(135deg,#071622,#243342)}.course-tag{position:absolute;z-index:2;left:12px;top:12px;background:var(--green);color:#04140a;font-size:.66rem;font-weight:900;padding:5px 8px;border-radius:4px}.course-art{position:absolute;right:18px;bottom:-12px;font-size:5.5rem;font-weight:900;color:rgba(255,255,255,.08)}.course-body{padding:17px}.course-body h3{margin:0 0 8px;font-size:1.05rem}.course-body p{color:var(--muted);font-size:.87rem;min-height:66px}.course-meta{display:flex;justify-content:space-between;color:#bdcbd6;font-size:.76rem;border-top:1px solid var(--line);padding-top:12px}.course-meta span:first-child{color:#f5c74c}.course-link{display:inline-block;color:var(--green);font-weight:800;margin-top:14px;font-size:.86rem}.trust{background:#081827}.trust-card{background:linear-gradient(135deg,#0e2639,#0a1c2b);border:1px solid var(--line);padding:38px;border-radius:18px;display:grid;grid-template-columns:1fr 1fr;gap:40px}.trust-card h2{font-size:2rem;margin:8px 0}.trust-card p{color:var(--muted)}.trust-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-content:center}.trust-points span{padding:14px;border:1px solid var(--line);border-radius:10px;color:#d6e2ea}.trust-points span::first-letter{color:var(--green)}.footer{background:#040c13;padding:46px 0 20px;border-top:1px solid var(--line);color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.5fr .7fr 1fr;gap:50px}.footer-grid>div{display:flex;flex-direction:column;gap:8px}.footer-grid strong{color:#fff}.footer-logo{width:200px;height:60px;object-fit:contain;object-position:left}.footer-bottom{border-top:1px solid var(--line);padding-top:18px;margin-top:30px;font-size:.8rem}
/* auth & common */.auth{min-height:calc(100vh - 76px);display:grid;place-items:center;padding:50px 0;background:radial-gradient(circle at 70% 20%,rgba(34,197,94,.08),transparent 30%)}.auth-card,.card,.panel{background:linear-gradient(180deg,#0e2233,#0a1b29);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 18px 45px rgba(0,0,0,.14)}label{display:block;font-size:.82rem;font-weight:750;color:#d8e4eb;margin:13px 0 6px}input,textarea,select{width:100%;background:#071827;border:1px solid rgba(255,255,255,.12);color:#e9f0f4;border-radius:9px;padding:11px 12px;font:inherit}textarea{min-height:110px}input[type=file]{padding:9px}.alert{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.3);color:#a7f3c1;padding:12px 14px;border-radius:10px;margin-bottom:18px}.alert.error{background:rgba(239,68,68,.13);border-color:rgba(239,68,68,.3);color:#fecaca}.small,.lead{color:var(--muted)}.progress{height:7px;background:#102c3e;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--green),#50e984);border-radius:999px}
/* application shell */.app-shell{min-height:calc(100vh - 76px);display:grid;grid-template-columns:228px 1fr;background:#06131f}.app-sidebar{background:#071827;border-right:1px solid var(--line);padding:22px 14px;display:flex;flex-direction:column;gap:4px}.sidebar-mark{width:45px;height:45px;object-fit:contain;margin:0 10px 18px}.side-logo{width:176px;height:54px;object-fit:contain;object-position:left;margin:0 8px 18px}.side-label{font-size:.65rem;letter-spacing:.12em;color:#607587;margin:17px 11px 7px}.app-sidebar>a{color:#b9c7d2;padding:10px 12px;border-radius:8px;font-size:.86rem}.app-sidebar>a:hover,.app-sidebar>a.active{background:rgba(34,197,94,.12);color:var(--green)}.support-card{margin-top:auto;padding:14px;border:1px solid var(--line);border-radius:12px;background:#0a1c2b;display:flex;flex-direction:column;gap:7px;font-size:.76rem}.support-card span{color:var(--muted)}.support-card a{border:1px solid var(--green);color:var(--green);padding:7px;border-radius:7px;text-align:center}.app-main{padding:30px;overflow:auto}.dashboard-top{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:22px}.dashboard-top h1{margin:3px 0 2px;font-size:1.8rem}.dashboard-top p{color:var(--muted);margin:0}.crumb{font-size:.72rem;color:var(--green);text-transform:uppercase;letter-spacing:.1em}.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--green),#0b7640);display:grid;place-items:center;color:#04140a;font-weight:900}.dashboard-grid{display:grid;grid-template-columns:1.55fr .8fr;gap:16px}.panel{padding:18px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.panel-head h3{margin:0;font-size:1rem}.panel-head p{color:var(--muted);font-size:.78rem;margin:3px 0}.panel-head a{font-size:.75rem;color:var(--green)}.continue-card{display:grid;grid-template-columns:180px 1fr;gap:18px;align-items:center}.mini-cover{height:122px;border-radius:10px}.continue-card small{color:var(--green);font-weight:800}.continue-card h2{font-size:1.15rem;margin:5px 0 12px}.continue-card p{font-size:.76rem;color:var(--muted);margin:7px 0 13px}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;text-align:center;font-size:.72rem}.calendar-grid span{color:var(--muted)}.calendar-grid b{padding:6px 2px;border-radius:6px;font-weight:500}.calendar-grid .today{background:var(--green);color:#04140a}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.metric-grid>div{background:#0a1b29;border:1px solid var(--line);padding:14px;border-radius:10px;text-align:center}.metric-grid b{display:block;color:var(--green);font-size:1.4rem}.metric-grid span{font-size:.68rem;color:var(--muted)}.notice{display:flex;gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}.notice:last-child{border-bottom:0}.notice i{color:var(--green)}.notice b,.notice span{display:block}.notice span{font-size:.72rem;color:var(--muted)}.courses-panel{grid-column:1/2}.course-row{display:grid;grid-template-columns:54px 1fr 25px;gap:12px;align-items:center;padding:10px;border-bottom:1px solid var(--line)}.tiny-cover{width:54px;height:44px;border-radius:7px;background:linear-gradient(135deg,#0e526e,#071827)}.course-row b,.course-row span{display:block}.course-row span{font-size:.7rem;color:var(--muted);margin:3px 0 6px}.course-row em{color:var(--green)}.achievement{text-align:center}.badge-medal{margin:6px auto 12px;width:68px;height:68px;border-radius:50%;background:radial-gradient(circle,var(--green) 0 45%,#0e6d3b 46% 62%,#123047 63%);display:grid;place-items:center;font-size:1.6rem;color:#04140a}.achievement p{color:var(--muted);font-size:.8rem}.empty-state{padding:28px;text-align:center;color:var(--muted)}
/* admin */.admin-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}.admin-metrics>div{background:linear-gradient(180deg,#0e2233,#0a1a28);border:1px solid var(--line);border-radius:13px;padding:18px}.admin-metrics span,.admin-metrics small{display:block;color:var(--muted);font-size:.75rem}.admin-metrics b{display:block;font-size:1.8rem;margin:8px 0;color:#fff}.admin-layout{display:grid;grid-template-columns:1.5fr .7fr;gap:16px}.course-admin-list{display:flex;flex-direction:column}.admin-course-row{display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:13px;padding:13px 0;border-bottom:1px solid var(--line)}.admin-thumb{width:72px;height:52px;border-radius:8px}.admin-course-row b,.admin-course-row span{display:block}.admin-course-row span{font-size:.72rem;color:var(--muted);margin:3px 0 7px}.admin-course-row>a{color:var(--green);font-size:.8rem}.recent{display:flex;flex-direction:column}.recent>a{padding:12px;border:1px solid var(--line);border-radius:9px;margin-bottom:9px;color:#d6e2ea}.recent>a:hover{border-color:var(--green);color:var(--green)}.form-panel{margin-top:0}.form-two{display:grid;grid-template-columns:1fr 120px;gap:12px}.check{display:flex;align-items:center;gap:8px}.check input{width:auto}.admin-layout>.form-panel{grid-column:auto}.admin-layout>.form-panel:nth-of-type(3),.admin-layout>.form-panel:nth-of-type(4){margin-top:0}
/* legacy pages and certificate */.dashboard{display:grid;grid-template-columns:230px 1fr;min-height:calc(100vh - 76px)}.sidebar{background:#071827;border-right:1px solid var(--line);padding:24px}.sidebar a{display:block;padding:10px;color:#c1ced8}.main{padding:30px}.toolbar{display:flex;justify-content:space-between;align-items:center}.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:12px}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left}th{background:#0b1e2e;color:#b9c7d2}.lesson{display:grid;grid-template-columns:1fr 300px;gap:18px}.viewer{background:#0b1c2b;border:1px solid var(--line);border-radius:12px;padding:20px}.module-list .item{display:block;padding:12px;border-bottom:1px solid var(--line)}.certificate{background:#fff;color:#111;border:10px double var(--navy2);padding:50px;text-align:center}.builder-grid{display:grid;grid-template-columns:360px minmax(700px,1fr);gap:22px}.settings-card{position:sticky;top:92px}.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.three-col input[type=color]{height:42px;padding:3px}.inline{display:flex!important;align-items:center;gap:8px}.inline input{width:auto}.upload-preview{max-width:220px;max-height:70px;object-fit:contain;background:#fff;border-radius:7px;padding:5px}.custom-cert{position:relative;overflow:hidden;aspect-ratio:1.414/1;background:var(--cert-bg,#fff);padding:5% 7%;color:var(--cert-primary,#0D2238);box-shadow:0 20px 60px rgba(0,0,0,.3);font-family:Georgia,serif}.custom-cert:before{content:"";position:absolute;inset:18px;border:2px solid var(--cert-primary)}.cert-corner{position:absolute;width:28%;height:28%;background:linear-gradient(135deg,var(--cert-primary) 0 65%,var(--cert-accent) 65% 78%,transparent 78%)}.cert-corner.top{right:-7%;top:-11%}.cert-corner.bottom{left:-7%;bottom:-11%;transform:rotate(180deg)}.cert-logo{width:260px;max-height:82px;object-fit:contain;position:relative;z-index:2}.custom-cert h1{font-size:clamp(28px,3vw,52px);letter-spacing:.12em}.accent-line{width:130px;height:4px;background:var(--cert-accent);margin:auto}.custom-cert .name{font-size:clamp(28px,3.4vw,58px);border-bottom:1px solid #aaa;display:inline-block;min-width:55%;font-family:"Brush Script MT",cursive}.custom-cert h2{color:var(--cert-accent)}.cert-bottom{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:end;margin-top:4%}.cert-seal,.seal-placeholder{width:90px;height:90px;object-fit:contain;justify-self:center}.seal-placeholder{border-radius:50%;background:var(--cert-accent);display:grid;place-items:center}.cert-signature{width:180px;height:65px;object-fit:contain}.signature-line{width:180px;height:45px;border-bottom:1px solid #555}.signature-block{display:flex;flex-direction:column;align-items:center}.cert-id{font-family:Arial;font-size:12px}.cert-footer{font-size:11px!important}.preview-label{color:var(--green);font-size:.7rem;font-weight:800}.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
@media(max-width:980px){.hero-grid,.trust-card{grid-template-columns:1fr}.hero-brand{min-height:300px}.stats-strip{grid-template-columns:repeat(2,1fr)}.stats-strip>div{border-bottom:1px solid var(--line)}.category-grid{grid-template-columns:repeat(3,1fr)}.course-grid{grid-template-columns:repeat(2,1fr)}.app-shell{grid-template-columns:1fr}.app-sidebar{display:none}.dashboard-grid,.admin-layout{grid-template-columns:1fr}.courses-panel{grid-column:auto}.admin-metrics{grid-template-columns:repeat(2,1fr)}.builder-grid{grid-template-columns:1fr}.settings-card{position:static}.footer-grid{grid-template-columns:1fr 1fr}.lesson{grid-template-columns:1fr}}@media(max-width:680px){.navlinks{display:none;position:absolute;top:76px;left:0;right:0;background:#071827;padding:18px;flex-direction:column}.menu-open .navlinks{display:flex}.mobile-toggle{display:block}.brand img{width:150px}.hero{padding-top:55px}.hero h1{font-size:2.65rem}.hero-brand{min-height:250px}.orbit-one{width:280px;height:280px}.orbit-two{width:210px;height:210px}.stats-strip{grid-template-columns:1fr}.category-grid,.course-grid,.trust-points,.metric-grid,.admin-metrics,.footer-grid{grid-template-columns:1fr}.continue-card{grid-template-columns:1fr}.app-main{padding:18px}.dashboard-top{align-items:flex-start}.dashboard-top .btn{display:none}.form-two{grid-template-columns:1fr}.page-head{align-items:flex-start}.page-head .btn{display:none}.custom-cert{min-width:760px}.builder-grid>section{overflow:auto}}
@media print{.topbar,.footer,.app-sidebar,.print-actions{display:none!important}.app-shell{display:block}.app-main{padding:0}.custom-cert{width:297mm;height:210mm;box-shadow:none}@page{size:A4 landscape;margin:0}}
/* SENTRIX course categories and expanded module editor */
.course-category-pill{display:inline-flex;width:max-content;margin-bottom:5px;padding:3px 8px;border:1px solid rgba(34,197,94,.35);border-radius:999px;color:var(--green2);font-size:.66rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em}.admin-thumb.forensics{background:radial-gradient(circle,#1a7698,transparent 45%),linear-gradient(135deg,#071827,#0c4056)}.admin-thumb.criminology{background:linear-gradient(135deg,#0c293f,#153e57)}.admin-thumb.safety{background:radial-gradient(circle at 50% 40%,#1f8e4c,transparent 35%),linear-gradient(135deg,#081c29,#0c3427)}.admin-thumb.investigation{background:radial-gradient(circle at 65% 35%,#2a708c,transparent 28%),linear-gradient(135deg,#071725,#132e42)}
.module-form-panel{grid-column:1/-1}.instruction-box{min-height:110px}.editor-help{margin:-4px 0 10px;color:var(--muted);font-size:.82rem}.editor-toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:10px;background:#071724;border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0}.editor-toolbar button{border:1px solid rgba(255,255,255,.12);border-radius:6px;background:#10283a;color:#eaf2f7;padding:7px 10px;cursor:pointer;font:inherit;font-size:.79rem}.editor-toolbar button:hover{border-color:var(--green);color:var(--green2)}.rich-editor{min-height:430px;max-height:720px;overflow:auto;padding:24px;background:#f9fbfc;color:#132333;border:1px solid rgba(255,255,255,.16);border-radius:0 0 10px 10px;line-height:1.75;font-family:Arial,sans-serif;font-size:16px;outline:none}.rich-editor:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(34,197,94,.12)}.rich-editor:empty:before{content:attr(data-placeholder);color:#80909c}.rich-editor h2,.rich-editor h3{color:#0d2238}.rich-editor a{color:#168b45;text-decoration:underline}.rich-editor.plain-link-editor{min-height:110px;max-height:180px;font-family:monospace}.content-fallback{display:none!important}.module-content{background:#fff;color:#172735;padding:28px;border-radius:12px;line-height:1.75}.module-content h2,.module-content h3,.module-content h4{color:#0d2238;line-height:1.25}.module-content a{color:#168b45;text-decoration:underline}.module-content blockquote{border-left:4px solid var(--green);margin-left:0;padding-left:18px;color:#52616d}.course-image.forensics{background:radial-gradient(circle at 65% 35%,#187b9c,transparent 28%),linear-gradient(135deg,#06141f,#0a3a50)}.course-image.criminology{background:linear-gradient(135deg,#081827,#17374d)}.course-image.safety{background:radial-gradient(circle at center,#1d8d4b 0 12%,transparent 35%),linear-gradient(135deg,#071827,#123829)}.course-image.investigation{background:radial-gradient(circle at 65% 40%,#1b7292,transparent 24%),linear-gradient(135deg,#06141f,#17364b)}

/* course management v3 */
.alert-danger{background:rgba(239,68,68,.12)!important;border-color:rgba(239,68,68,.4)!important;color:#fecaca!important}.field-help{display:block;color:var(--muted);font-size:.78rem;margin:-7px 0 14px}.image-thumb{object-fit:cover;border:1px solid var(--line)}.course-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.course-actions a,.course-actions button{font-size:.78rem}.course-actions a{color:var(--green)}.course-actions form{margin:0}.link-danger{border:0;background:none;padding:0;color:#fb7185;cursor:pointer;font:inherit}.link-danger:hover{text-decoration:underline}.cover-preview{display:grid;grid-template-columns:minmax(180px,320px) 1fr;gap:15px;align-items:center;margin-bottom:12px}.cover-preview img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;border:1px solid var(--line)}.course-image.has-cover{background-position:center;background-size:cover}.course-image.has-cover:before{background:linear-gradient(180deg,rgba(2,9,15,.08),rgba(2,9,15,.88))}.course-detail-card{overflow:hidden}.course-detail-cover{display:block;width:100%;max-height:440px;object-fit:cover;border-radius:12px;margin-bottom:24px;border:1px solid var(--line)}
@media(max-width:680px){.admin-course-row{grid-template-columns:58px 1fr}.admin-thumb{width:58px}.course-actions{grid-column:1/-1;justify-content:flex-start;padding-left:71px}.cover-preview{grid-template-columns:1fr}}
/* SENTRIX v4: branding and homepage advertising */
.home-ads{padding-top:36px;padding-bottom:20px;background:#071827}
.ad-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.ad-card{overflow:hidden;border:1px solid #1d3c52;background:linear-gradient(145deg,#0b2032,#0d293e);border-radius:18px;box-shadow:0 18px 45px rgba(0,0,0,.18)}
.ad-card>img{width:100%;height:190px;object-fit:cover;display:block}
.ad-card-body{padding:22px}.ad-card-body h3{margin:9px 0 8px;font-size:1.25rem}.ad-card-body p{color:#a8bdd0;min-height:48px}.ad-type{display:inline-flex;padding:6px 10px;border:1px solid rgba(34,197,94,.35);border-radius:999px;color:#35da78;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.branding-preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:18px}.brand-preview{height:170px;border:1px solid #214158;border-radius:15px;display:flex;align-items:center;justify-content:center;padding:20px;margin:8px 0 12px;background:#061522}.brand-preview img{max-width:100%;max-height:100%;object-fit:contain}.brand-preview.mark img{max-width:140px}
.ad-admin-list{display:grid;gap:12px;margin-bottom:22px}.ad-admin-row{display:grid;grid-template-columns:92px 1fr auto;gap:15px;align-items:center;padding:12px;border:1px solid #1c3b51;border-radius:14px;background:#091d2d}.ad-admin-row img,.ad-admin-placeholder{width:92px;height:62px;border-radius:9px;object-fit:cover}.ad-admin-placeholder{display:flex;align-items:center;justify-content:center;background:#12334a;color:#35da78;font-weight:900}.ad-admin-row b,.ad-admin-row small{display:block}.ad-admin-row small{color:#88a5ba;margin-top:5px}
@media(max-width:900px){.ad-grid{grid-template-columns:1fr}.branding-preview-grid{grid-template-columns:1fr}.ad-admin-row{grid-template-columns:70px 1fr}.ad-admin-row img,.ad-admin-placeholder{width:70px;height:55px}.ad-admin-row .course-actions{grid-column:1/-1}}
/* SENTRIX v5: homepage content editor */
.home-editor-group{margin:18px 0;padding:20px;border:1px solid #1c3b51;border-radius:14px;background:#081b2a}
.home-editor-group h4{margin:0 0 12px;font-size:1.05rem;color:#fff}
.group-title-row{display:flex;align-items:center;justify-content:space-between;gap:18px}
.group-title-row .check{margin:0}
.homepage-headline-field{min-height:100px;font-size:1.05rem}
.homepage-stat-editor{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.mini-setting-card{padding:12px;border:1px solid #1d3c52;border-radius:12px;background:#0b2234}
.mini-setting-card b{display:block;color:#35da78;margin-bottom:8px}
.mini-setting-card label{font-size:.72rem;margin-top:8px}
@media(max-width:1100px){.homepage-stat-editor{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.homepage-stat-editor{grid-template-columns:1fr}.group-title-row{align-items:flex-start;flex-direction:column}}

/* Dedicated Homepage Editor */
.homepage-main{max-width:none;width:100%}.homepage-editor-page{width:100%;max-width:none}.homepage-editor-page form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.homepage-editor-page .home-editor-group{margin:0;padding:24px;border:1px solid var(--line);border-radius:16px;background:#091d2d}.homepage-editor-page .home-editor-group:first-of-type,.homepage-editor-page .home-editor-group:last-of-type{grid-column:1/-1}.homepage-editor-page .panel-head{grid-column:1/-1}.homepage-editor-page form>.btn,.homepage-editor-page form>a.btn{width:max-content}.homepage-editor-page .homepage-headline-field{min-height:150px}.homepage-editor-page .instruction-box{min-height:130px}.homepage-editor-page .homepage-stat-editor{grid-template-columns:repeat(5,minmax(150px,1fr));overflow-x:auto}.homepage-editor-page input,.homepage-editor-page textarea,.homepage-editor-page select{font-size:1rem}.homepage-editor-page label{margin-top:14px}.homepage-editor-page h4{font-size:1.15rem;margin:0 0 14px}@media(max-width:1100px){.homepage-editor-page form{grid-template-columns:1fr}.homepage-editor-page .home-editor-group{grid-column:1/-1}.homepage-editor-page .homepage-stat-editor{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.homepage-editor-page .homepage-stat-editor{grid-template-columns:1fr}}

/* SENTRIX v7: customizable course categories */
.dynamic-category-grid{grid-template-columns:repeat(auto-fit,minmax(165px,1fr))}
.category-card{position:relative;overflow:hidden}
.category-card:before{content:"";position:absolute;inset:auto 0 0;height:3px;background:var(--category-color,var(--green));transform:scaleX(0);transform-origin:left;transition:.2s}
.category-card:hover:before,.category-card.selected:before{transform:scaleX(1)}
.category-card i{color:var(--category-color,var(--green))}
.category-card.selected{border-color:var(--category-color,var(--green));box-shadow:0 0 0 1px color-mix(in srgb,var(--category-color,var(--green)) 35%,transparent)}
.category-reset{border:0;background:transparent;color:var(--green);font:inherit;cursor:pointer;padding:6px 0}
.course-image.custom-category{background:radial-gradient(circle at 68% 35%,color-mix(in srgb,var(--category-color,var(--green)) 48%,transparent),transparent 28%),linear-gradient(135deg,#06141f,#0b2c3d)}
.category-manager-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(340px,.75fr);gap:18px;align-items:start}
.category-admin-list{display:flex;flex-direction:column;gap:10px}
.category-admin-row{display:grid;grid-template-columns:54px minmax(0,1fr) auto;gap:14px;align-items:center;padding:13px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.018)}
.category-swatch{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;border:1px solid color-mix(in srgb,var(--category-color) 55%,transparent);background:color-mix(in srgb,var(--category-color) 14%,#0b1c2b);color:var(--category-color);font-size:1.35rem}
.category-admin-copy{min-width:0;display:flex;flex-direction:column}.category-admin-copy b{font-size:1rem}.category-admin-copy small{color:var(--muted);white-space:normal}
.category-admin-row .course-actions{align-items:center;flex-wrap:wrap;justify-content:flex-end}.category-admin-row .course-actions form{display:flex;align-items:center;gap:8px}.category-admin-row .course-actions select{width:auto;min-width:145px;padding:7px 9px;font-size:.78rem}
input[type=color]{height:50px;padding:5px;cursor:pointer}
@media(max-width:1100px){.category-manager-grid{grid-template-columns:1fr}}
@media(max-width:700px){.category-admin-row{grid-template-columns:48px 1fr}.category-admin-row .course-actions{grid-column:1/-1;justify-content:flex-start}.category-admin-row .course-actions form{flex-wrap:wrap}}

/* SENTRIX v8 — responsive/mobile system */
html,body{max-width:100%;overflow-x:hidden}
button,input,select,textarea{max-width:100%}
iframe,video{max-width:100%;height:auto}
.table-wrap,.responsive-table{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}

@media(max-width:900px){
  .container{width:min(100% - 32px,1180px)}
  .topbar{height:68px}
  .navlinks{top:68px}
  .brand img{height:46px}
  .hero{padding:58px 0 26px}
  .hero-grid{gap:24px}
  .hero-copy{text-align:center}
  .hero-copy>p{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center;flex-wrap:wrap}
  .hero-brand{min-height:260px}
  .hero-brand img{width:min(280px,70vw)}
  .orbit-one{width:290px;height:290px}.orbit-two{width:215px;height:215px}
  .section{padding:54px 0}
  .section-head{align-items:flex-start;flex-direction:column;gap:10px}
  .category-reset{align-self:flex-start}
  .course-image{height:200px}
  .ad-card{grid-template-columns:1fr!important}
  .ad-card img{width:100%!important;height:220px!important;object-fit:cover}
  .app-main{min-width:0}
  .panel,.card,.form-card{min-width:0}
}

@media(max-width:680px){
  body{font-size:15px}
  .container{width:min(100% - 24px,1180px)}
  .topbar{height:64px}
  .navlinks{top:64px;max-height:calc(100vh - 64px);overflow-y:auto;border-bottom:1px solid var(--line);box-shadow:0 18px 35px rgba(0,0,0,.35)}
  .navlinks a{width:100%;text-align:center;padding:10px 12px}
  .navlinks .btn{width:100%}
  .brand img{width:140px;height:42px}
  .mobile-toggle{width:44px;height:44px;border:1px solid var(--line);border-radius:10px;display:grid;place-items:center}
  .hero{padding:42px 0 22px}
  .hero h1{font-size:clamp(2.15rem,12vw,3.15rem);line-height:1.03;margin:13px 0 18px}
  .eyebrow,.kicker{font-size:.7rem}
  .hero-copy>p{font-size:1rem}
  .hero-actions{display:grid;grid-template-columns:1fr;width:100%}
  .hero-actions .btn{width:100%;min-height:48px}
  .hero-brand{min-height:220px}
  .hero-brand img{width:min(215px,62vw)}
  .orbit-one{width:230px;height:230px}.orbit-two{width:170px;height:170px}
  .stats-strip{margin-top:18px;grid-template-columns:repeat(2,1fr)}
  .stats-strip>div{padding:15px 8px;border-right:1px solid var(--line)}
  .stats-strip>div:nth-child(2n){border-right:0}
  .stats-strip>div:last-child{grid-column:1/-1;border-right:0}
  .stats-strip b{font-size:1.13rem}.stats-strip span{font-size:.73rem}
  .section{padding:42px 0}
  .section-head h2{font-size:1.65rem}
  .category-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .category-card{min-height:72px;padding:14px 12px;flex-direction:column;justify-content:center;text-align:center;gap:7px}
  .category-card span{font-size:.83rem;line-height:1.2}
  .course-grid{grid-template-columns:1fr;gap:16px}
  .course-image{height:205px}
  .course-body p{min-height:0}
  .trust-card{padding:24px;gap:24px}
  .trust-card h2{font-size:1.65rem}
  .footer{padding:38px 0 18px}
  .footer-grid{gap:28px}
  .footer-logo{width:170px}
  .btn{min-height:44px;padding:10px 15px}
  input,select,textarea{font-size:16px!important}
  textarea{min-height:150px}
  .page-head,.dashboard-top,.panel-head{flex-direction:column;align-items:stretch!important;gap:12px}
  .page-head .btn,.dashboard-top .btn,.panel-head .btn{display:inline-flex;width:100%}
  .metric-grid,.admin-metrics{grid-template-columns:1fr 1fr}
  .admin-course-row,.ad-admin-row,.category-admin-row{grid-template-columns:1fr!important}
  .admin-thumb,.ad-admin-row img,.ad-admin-placeholder{width:100%!important;height:170px!important}
  .course-actions{grid-column:auto!important;padding-left:0!important;display:grid!important;grid-template-columns:1fr 1fr;width:100%}
  .course-actions .btn,.course-actions form,.course-actions form button{width:100%}
  .form-two,.form-three{grid-template-columns:1fr!important}
  .homepage-editor-page form{display:block!important}
  .homepage-editor-page .home-editor-group{margin-bottom:18px!important;padding:18px!important}
  .homepage-editor-page .homepage-stat-editor{display:grid;grid-template-columns:1fr!important;overflow:visible}
  .homepage-editor-page textarea{min-height:180px}
  .category-manager-grid{display:block!important}
  .category-manager-grid>*{margin-bottom:18px}
  .builder-grid{display:block!important}
  .builder-grid>*{margin-bottom:18px}
  .custom-cert{transform-origin:top left;zoom:.54;min-width:760px}
  .certificate-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
}

@media(max-width:420px){
  .container{width:min(100% - 18px,1180px)}
  .brand img{width:126px}
  .hero h1{font-size:2.08rem}
  .category-grid{grid-template-columns:1fr 1fr}
  .category-card{padding:12px 8px}
  .metric-grid,.admin-metrics{grid-template-columns:1fr}
  .course-actions{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr}
  .stats-strip>div,.stats-strip>div:nth-child(2n){border-right:0}
  .stats-strip>div:last-child{grid-column:auto}
}

@media(hover:none){
  .course-card:hover,.category-card:hover{transform:none}
}

/* SENTRIX Paid Courses Update */
.payment-course-fields{margin:16px 0;padding:16px;border:1px solid var(--line);border-radius:14px;background:rgba(34,197,94,.05)}
.price-field{margin-top:12px}.price-field[hidden]{display:none!important}
.course-price-line,.paid-price,.course-price{font-weight:800;color:var(--green);font-size:1.08rem}
.course-enroll-action{display:flex;flex-direction:column;align-items:flex-start;gap:10px;margin-top:24px}.course-enroll-action form{margin:0}.course-enroll-action small{color:var(--muted)}
.payment-page{max-width:980px}.payment-course-summary{text-align:center;margin-bottom:28px}.payment-course-summary h1{font-size:clamp(2rem,5vw,3.5rem);margin:12px 0}.payment-course-summary .course-price{font-size:2rem;margin:12px 0}
.payment-form{max-width:720px;margin:0 auto;padding:28px}.payment-form h2{margin-top:0}.payment-qr-display{display:grid;place-items:center;padding:22px;border:1px solid var(--line);border-radius:16px;background:#fff;margin:16px 0}.payment-qr-display>div{text-align:center}.payment-qr-display img{display:block;width:min(320px,80vw);max-height:360px;object-fit:contain;margin:0 auto 12px}.payment-notice{font-size:.86rem;color:var(--muted);margin:12px 0 0}
.payment-qr-admin-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:20px}.payment-qr-admin-card{border:1px solid var(--line);border-radius:16px;padding:18px}.payment-qr-admin-card img,.qr-placeholder{width:100%;height:240px;object-fit:contain;background:#fff;border-radius:12px;margin:10px 0}.qr-placeholder{display:grid;place-items:center;color:var(--muted);border:1px dashed var(--line)}
.payment-admin-list{display:grid;gap:18px}.payment-admin-card{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.8fr);gap:24px;padding:22px;border:1px solid var(--line);border-radius:16px}.payment-admin-card h3{margin:8px 0}.payment-data{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px;margin:14px 0}.payment-status{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:.72rem;font-weight:800}.status-pending{background:#fef3c7;color:#92400e}.status-approved{background:#dcfce7;color:#166534}.status-rejected{background:#fee2e2;color:#991b1b}.payment-review-form textarea{min-height:100px}.review-actions{display:flex;gap:10px;flex-wrap:wrap}.btn.danger{background:#b91c1c;color:#fff;border-color:#b91c1c}.payment-status-note{display:block;color:var(--green);font-size:.82rem;margin:8px 0 12px}
@media(max-width:900px){.payment-qr-admin-grid{grid-template-columns:1fr}.payment-admin-card{grid-template-columns:1fr}}
@media(max-width:680px){.payment-form{padding:18px}.payment-data{grid-template-columns:1fr}.review-actions .btn{width:100%}.course-enroll-action,.course-enroll-action .btn,.course-enroll-action form,.course-enroll-action form button{width:100%}}
.qr-settings-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:14px 0 20px}.qr-setting-card{border:1px solid var(--line,#dfe6ee);border-radius:16px;padding:16px;background:rgba(255,255,255,.03)}.qr-setting-card img{display:block;width:100%;max-width:230px;aspect-ratio:1;object-fit:contain;background:#fff;border-radius:12px;margin:10px auto}.instructor-module-editor{min-height:360px}.payment-owner{padding:10px 14px;border-left:4px solid #22c55e;background:rgba(34,197,94,.08);border-radius:8px}@media(max-width:760px){.qr-settings-grid{grid-template-columns:1fr}.course-admin-row{align-items:flex-start}.course-actions{flex-wrap:wrap}}


/* SENTRIX V11 — Instructor registration */
.instructor-signup-page{background:linear-gradient(135deg,#071421,#0b2032);min-height:calc(100vh - 76px)}
.instructor-signup-hero{padding:72px 0}.instructor-signup-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(560px,1.15fr);gap:64px;align-items:start}.instructor-signup-grid>div:first-child{position:sticky;top:110px;padding-top:32px}.instructor-signup-grid h1{font-size:clamp(44px,5vw,72px);line-height:1.02;margin:12px 0 22px;color:#fff}.instructor-signup-grid>div:first-child>p{font-size:19px;line-height:1.7;color:#b7c9d7;max-width:620px}.instructor-benefits{display:grid;gap:14px;margin-top:34px}.instructor-benefits span{color:#d9e7ef;font-weight:700}.instructor-benefits span::first-letter{color:#22c55e}.instructor-application-card{padding:34px;border:1px solid rgba(255,255,255,.12);background:#0b1f30;box-shadow:0 30px 80px rgba(0,0,0,.25)}.instructor-application-card h2{font-size:30px;margin:0 0 8px}.instructor-application-card>p{color:#9fb5c5;margin-bottom:26px}.instructor-application-card label{display:block;margin-top:16px}.large-textarea{min-height:170px}.qr-registration-section{margin:28px 0;padding:24px;border:1px solid #1d3a4f;border-radius:18px;background:#081a29}.qr-registration-section h3{margin:0 0 6px}.qr-registration-section p{color:#8fa9ba}.form-three{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.wide-button{width:100%;justify-content:center;margin-top:18px}.form-switch{text-align:center;color:#91a8b8}.form-switch a{color:#22c55e;font-weight:800}.status-page{min-height:calc(100vh - 76px);display:grid;place-items:center;background:#071421;padding:60px 20px}.status-card{max-width:820px;margin:auto;text-align:center;padding:54px;background:#0b1f30}.status-icon{font-size:54px}.status-pill{display:inline-flex;padding:7px 12px;border-radius:999px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.status-pill.pending{background:#3a2b0c;color:#fbbf24}.status-pill.approved{background:#0d3b28;color:#4ade80}.status-pill.rejected{background:#421c23;color:#fda4af}.status-card h1{font-size:42px;margin:18px 0 12px}.status-card>p{color:#a9bdca;font-size:18px;line-height:1.7}.application-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:30px 0}.application-summary div{padding:18px;border:1px solid #1d3a4f;border-radius:14px;text-align:left}.application-summary span,.application-details span{display:block;color:#7f9bad;font-size:12px;text-transform:uppercase;font-weight:800;letter-spacing:.08em}.application-summary b{display:block;margin-top:5px}.status-actions{display:flex;justify-content:center;gap:12px;margin-top:28px}.application-list{display:grid;gap:20px}.application-card{border:1px solid #1b394d;border-radius:18px;padding:24px;background:#0a1d2c}.application-person{display:flex;align-items:center;gap:16px}.application-person img,.application-avatar{width:68px;height:68px;border-radius:16px;object-fit:cover}.application-avatar{display:grid;place-items:center;background:#15394d;color:#22c55e;font-size:28px;font-weight:900}.application-person h3{margin:8px 0 2px}.application-person p{margin:0;color:#8fa8b8}.application-details{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}.application-details>div{padding:16px;border-radius:14px;background:#071724}.application-details p{margin:6px 0 0;line-height:1.55}.application-review-form textarea{min-height:100px}.review-buttons{display:flex;gap:10px;margin-top:12px}.btn.danger{background:#b42338;color:#fff;border-color:#b42338}
@media(max-width:980px){.instructor-signup-grid{grid-template-columns:1fr}.instructor-signup-grid>div:first-child{position:static}.form-three{grid-template-columns:1fr}.application-details{grid-template-columns:1fr}}
@media(max-width:680px){.instructor-signup-hero{padding:34px 0}.instructor-application-card{padding:22px}.application-summary{grid-template-columns:1fr}.review-buttons,.status-actions{flex-direction:column}.review-buttons .btn,.status-actions .btn{width:100%;justify-content:center}}