*{box-sizing:border-box}:root{--ink:#10222b;--muted:#64747c;--surface:#fff;--soft:#edf6f3;--line:#d9e6e2;--accent:#087f6f;--accent2:#52d6ae;--navy:#0c2832;--radius:22px;--shadow:0 20px 55px rgba(12,40,50,.13)}
html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:#fbfdfc;line-height:1.6}a{text-decoration:none;color:inherit}button,input{font:inherit}button{cursor:pointer}.shell{min-height:100vh}.topbar{height:72px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:40;background:rgba(251,253,252,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.03em}.brand-mark{width:39px;height:39px;display:grid;place-items:center;border-radius:13px;background:var(--accent);color:#fff}.icon-button{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--navy);font-size:1.3rem}.desktop-nav{display:flex;align-items:center;gap:25px;font-weight:700}.desktop-nav a:hover{color:var(--accent)}.drawer-backdrop{position:fixed;inset:0;background:rgba(3,18,24,.56);z-index:70;opacity:0;pointer-events:none;transition:.25s}.drawer{position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);z-index:80;padding:20px;transform:translateX(-104%);transition:.28s;background:var(--navy);color:#fff;box-shadow:var(--shadow);overflow-y:auto}.drawer.open{transform:translateX(0)}.drawer-backdrop.open{opacity:1;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:25px}.drawer .brand-mark{background:var(--accent2);color:var(--navy)}.drawer-nav{display:grid;gap:8px}.drawer-nav a{display:flex;align-items:center;gap:13px;padding:13px 14px;border-radius:14px;color:#d8e5e8;font-weight:700}.drawer-nav a:hover,.drawer-nav a.active{background:rgba(82,214,174,.13);color:#fff}.drawer-section{margin:24px 14px 8px;color:#7fa0a8;font-size:.72rem;font-weight:850;letter-spacing:.15em;text-transform:uppercase}.hero{padding:74px 7vw 62px;display:grid;grid-template-columns:1.15fr .85fr;gap:6vw;align-items:center;background:radial-gradient(circle at 82% 12%,rgba(8,127,111,.14),transparent 30%),linear-gradient(180deg,#fbfdfc,#f1f8f6)}.eyebrow{color:var(--accent);font-size:.76rem;font-weight:850;letter-spacing:.15em;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(3.1rem,6.5vw,6rem);line-height:.97;letter-spacing:-.065em;margin:14px 0 22px}h1 span{color:var(--accent)}.hero p{max-width:660px;color:var(--muted);font-size:1.08rem}.actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:27px}.button{min-height:48px;padding:0 20px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--accent);border-radius:14px;background:var(--accent);color:#fff;font-weight:800}.button:hover{background:#056458}.button.secondary{background:#fff;color:var(--accent)}.hero-card{padding:29px;border-radius:29px;background:var(--navy);color:#fff;box-shadow:0 30px 70px rgba(12,40,50,.22)}.hero-card p{color:#b9ccd1}.course-symbol{width:72px;height:72px;display:grid;place-items:center;margin:25px 0;border-radius:21px;background:var(--accent);font-size:2rem;font-weight:850}.progress{height:9px;background:#28444c;border-radius:99px;overflow:hidden;margin:22px 0 9px}.progress span{display:block;height:100%;background:var(--accent2);width:0}.meta{display:flex;justify-content:space-between;color:#b9ccd1;font-size:.84rem;margin-bottom:23px}.section{padding:78px 7vw}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section h2{font-size:clamp(2rem,4vw,3.35rem);line-height:1.05;letter-spacing:-.05em;margin:7px 0}.dashboard-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.panel{padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.continue-card{display:grid;grid-template-columns:110px 1fr;gap:22px;align-items:center}.continue-icon{height:110px;display:grid;place-items:center;border-radius:20px;background:var(--soft);color:var(--accent);font-size:2rem;font-weight:850}.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.quick-link{padding:19px;border:1px solid var(--line);border-radius:18px;background:#fff}.quick-link strong{display:block;margin-top:8px}.quick-link small{color:var(--muted)}.category-grid,.resource-grid,.game-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.card{padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.18s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.card-icon{width:53px;height:53px;display:grid;place-items:center;border-radius:16px;background:var(--soft);color:var(--accent);font-weight:850}.card p{color:var(--muted);font-size:.93rem}.card-link{color:var(--accent);font-weight:800}.tag{display:inline-block;padding:5px 9px;border-radius:999px;background:var(--soft);color:var(--accent);font-size:.73rem;font-weight:800}.resource-card .button{width:100%;margin-top:8px}.game-card{min-height:220px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;background:linear-gradient(145deg,var(--navy),#174b58)}.game-card p{color:#c6d7db}.footer{padding:40px 7vw;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1.5fr .7fr;gap:25px;color:var(--muted);font-size:.82rem}.footer p{margin:0}.page-hero{padding:60px 7vw 45px;background:linear-gradient(180deg,#eff8f5,#fbfdfc)}.page-hero h1{font-size:clamp(2.8rem,5vw,4.8rem)}.search{min-width:min(100%,330px);display:flex;align-items:center;padding:0 15px;border:1px solid var(--line);border-radius:14px;background:#fff}.search input{width:100%;height:48px;border:0;outline:0;background:transparent}.hidden{display:none!important}@media(max-width:900px){.desktop-nav{display:none}.hero,.dashboard-grid{grid-template-columns:1fr}.category-grid,.resource-grid,.game-grid{grid-template-columns:repeat(2,1fr)}.footer{grid-template-columns:1fr}}@media(min-width:901px){#menuButton{display:none}}@media(max-width:650px){.hero,.section,.page-hero{padding-left:20px;padding-right:20px}.hero{padding-top:49px}h1{font-size:3.35rem}.section-head{align-items:stretch;flex-direction:column}.category-grid,.resource-grid,.game-grid,.quick-grid{grid-template-columns:1fr}.continue-card{grid-template-columns:1fr}.footer{padding-left:20px;padding-right:20px}.brand span:last-child{font-size:.94rem}}
/* Compatibility styles for course, dashboard and tools */
.site-header{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 6vw;position:sticky;top:0;z-index:30;background:rgba(251,253,252,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.nav{display:flex;align-items:center;gap:25px;font-weight:700}.nav a:hover,.nav a.active{color:var(--accent)}.menu-button{display:none;border:1px solid var(--line);border-radius:12px;background:#fff;padding:8px 11px}.button-small{min-height:40px;padding:0 15px}.button-ghost{color:var(--accent);background:transparent}.button-full{width:100%}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:30px;padding:45px 7vw 85px;align-items:start}.content-panel,.sidebar-card,.form-card,.stat-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.sidebar{position:sticky;top:95px}.breadcrumb{margin-bottom:16px;color:var(--muted);font-size:.88rem}.lesson-list{display:grid;gap:11px;margin:18px 0}.lesson-button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px;border:1px solid var(--line);border-radius:14px;text-align:left;background:#fff}.lesson-button:hover,.lesson-button.active{border-color:var(--accent);background:var(--soft)}.lesson-number{width:31px;height:31px;display:grid;place-items:center;border-radius:10px;color:#fff;background:var(--accent);font-weight:800}.lesson-main{flex:1}.lesson-main strong{display:block}.lesson-main small{color:var(--muted)}.lesson-status{color:var(--accent)}.lesson-content p,.lesson-content li{color:#50616a}.callout{padding:18px;border-left:4px solid var(--accent);border-radius:0 14px 14px 0;background:var(--soft)}.warning{border-left-color:#f1b84b;background:#fff8e9}.progress-track{height:9px;background:#28444c;border-radius:99px;overflow:hidden;margin:22px 0 9px}.progress-track span{display:block;height:100%;background:var(--accent2);width:0}.quiz-option{width:100%;margin:7px 0;padding:14px;border:1px solid var(--line);border-radius:13px;text-align:left;background:#fff}.quiz-option.correct{border-color:var(--accent);background:var(--soft)}.quiz-option.incorrect{border-color:#b53b46;background:#fff1f2}.feedback{margin-top:12px;font-weight:700}.form-card{max-width:620px;margin:50px auto 90px}.field{display:grid;gap:7px;margin-bottom:17px}.field label{font-weight:720}.field input,.field textarea,.field select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;outline:0;background:#fff}.form-note{color:var(--muted);font-size:.86rem}.dashboard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.stat-card strong{display:block;font-size:2rem}.toast{position:fixed;right:18px;bottom:18px;z-index:90;padding:14px 17px;border-radius:14px;color:#fff;background:var(--navy);opacity:0;transform:translateY(18px);transition:.25s}.toast.show{opacity:1;transform:translateY(0)}footer:not(.footer){padding:43px 7vw;display:grid;grid-template-columns:1fr 1.4fr .7fr;gap:28px;align-items:center;border-top:1px solid var(--line);color:var(--muted);font-size:.81rem}footer:not(.footer) p{margin:0}
@media(max-width:900px){.content-layout{grid-template-columns:1fr}.sidebar{position:static}.dashboard-grid{grid-template-columns:repeat(2,1fr)}footer:not(.footer){grid-template-columns:1fr}}
@media(max-width:680px){.site-header{padding:0 20px}.menu-button{display:block}.nav{display:none}.content-layout{padding-left:20px;padding-right:20px}.dashboard-grid{grid-template-columns:1fr}.content-panel{padding:21px}}

.admin-layout{display:grid;grid-template-columns:380px minmax(0,1fr);gap:24px;align-items:start}
.admin-form{position:sticky;top:92px}
.admin-list{display:grid;gap:14px}
.admin-course{display:grid;grid-template-columns:62px 1fr auto;gap:15px;align-items:center;padding:17px;border:1px solid var(--line);border-radius:18px;background:#fff}
.admin-course-icon{width:62px;height:62px;display:grid;place-items:center;border-radius:17px;background:var(--soft);color:var(--accent);font-size:1.35rem;font-weight:850}
.admin-actions{display:flex;gap:8px;flex-wrap:wrap}
.small-button{min-height:38px;padding:0 13px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);font-weight:750}
.small-button.danger{color:#b53b46;border-color:#efc9cd}
.field{display:grid;gap:7px;margin-bottom:16px}.field label{font-weight:760}.field input,.field textarea,.field select{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:12px;outline:0;background:#fff}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(8,127,111,.11)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:13px}.help-text{color:var(--muted);font-size:.82rem}.admin-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.empty-panel{padding:40px;text-align:center;border:1px dashed var(--line);border-radius:18px;color:var(--muted);background:#fff}
.dynamic-course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.course-page-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:25px;align-items:start}.course-sidebar{position:sticky;top:92px}.lesson-block{padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff;margin-bottom:15px}.course-meta-row{display:flex;gap:10px;flex-wrap:wrap;margin:15px 0}.notice{padding:16px 18px;border-left:4px solid var(--accent);border-radius:0 14px 14px 0;background:var(--soft)}
@media(max-width:900px){.admin-layout,.course-page-layout{grid-template-columns:1fr}.admin-form,.course-sidebar{position:static}.dynamic-course-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.form-row,.dynamic-course-grid{grid-template-columns:1fr}.admin-course{grid-template-columns:52px 1fr}.admin-actions{grid-column:1/-1}.admin-course-icon{width:52px;height:52px}}

.narrow{max-width:620px}.button-full{width:100%}
button:disabled{opacity:.6;cursor:not-allowed}
#adminStatus{margin-bottom:0}

/* V6 visual course builder */
.builder-shell{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:28px;align-items:start}.builder-heading{display:flex;justify-content:space-between;align-items:end;margin:28px 0 14px}.block-palette{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}.block-palette button,.builder-block-head button{border:1px solid var(--border,#d8e1e8);background:var(--surface,#fff);border-radius:12px;padding:11px;font:inherit;font-weight:700;cursor:pointer}.course-block-list{display:grid;gap:14px}.builder-block{border:1px solid var(--border,#d8e1e8);border-radius:18px;overflow:hidden;background:var(--surface,#fff)}.builder-block-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:rgba(12,49,63,.05)}.builder-block-head div{display:flex;gap:6px}.builder-block-head button{padding:6px 10px}.builder-block-body{padding:14px}.sticky-save{position:sticky;bottom:10px;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);padding:12px;border-radius:16px;margin-top:20px;box-shadow:0 10px 35px rgba(0,0,0,.08)}.course-content{max-width:850px;margin:auto;background:var(--surface,#fff);border-radius:24px;padding:clamp(20px,5vw,54px);box-shadow:0 18px 60px rgba(0,0,0,.08)}.course-content>h2{margin-top:40px}.course-content>h2:first-child{margin-top:0}.lesson-copy{font-size:1.05rem;line-height:1.75;margin:18px 0}.lesson-media{margin:26px 0}.lesson-media img,.lesson-media iframe{width:100%;border:0;border-radius:18px;aspect-ratio:16/9;object-fit:cover}.lesson-media figcaption{font-size:.9rem;opacity:.72;margin-top:8px}.scenario-card,.quiz-card,.unity-card{border:1px solid var(--border,#d8e1e8);padding:22px;border-radius:20px;margin:26px 0}.scenario-card details{margin-top:15px;padding:14px;border-radius:12px;background:rgba(12,49,63,.05)}.quiz-options{display:grid;gap:10px}.quiz-option{padding:14px;text-align:left;border:1px solid var(--border,#d8e1e8);border-radius:12px;background:#fff;font:inherit;cursor:pointer}.quiz-option.correct{outline:2px solid #1d8b55}.quiz-option.incorrect{outline:2px solid #c64646}.quiz-feedback{font-weight:700}.unity-card iframe{width:100%;min-height:520px;border:0;border-radius:14px}.lesson-divider{border:0;border-top:2px solid var(--border,#d8e1e8);margin:38px 0}@media(max-width:900px){.builder-shell{grid-template-columns:1fr}.block-palette{grid-template-columns:repeat(2,1fr)}}

.auth-tabs{display:flex;gap:8px;margin:18px 0}.button-full{width:100%}.feedback{color:#b42318;font-weight:700}.course-progress{max-width:620px;margin-top:22px}.course-progress-top{display:flex;justify-content:space-between}.progress-track{height:10px;background:#dce9e5;border-radius:999px;overflow:hidden;margin:8px 0}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:inherit}.trackable-block{padding:20px 0;border-bottom:1px solid var(--line)}.complete-block{margin-top:14px;padding:9px 13px;border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:750}.complete-block.done{background:var(--soft);color:var(--accent)}.game-lesson-card{padding:24px;border-radius:var(--radius);background:#0c2832;color:#fff;margin:22px 0}.game-card-head{display:flex;justify-content:space-between;gap:15px}.xp-pill{background:rgba(82,214,174,.18);padding:7px 11px;border-radius:999px;color:#bff9e8;font-weight:800}.game-meta{display:flex;gap:8px;flex-wrap:wrap}.game-meta span{background:rgba(255,255,255,.1);padding:6px 10px;border-radius:999px}.objectives{background:rgba(255,255,255,.08);padding:15px;border-radius:14px;margin:15px 0}.game-frame-wrap{width:100%;border-radius:15px;overflow:hidden;background:#000;margin:18px auto}.game-frame-wrap.game-portrait{aspect-ratio:9/16;max-width:520px}.game-frame-wrap.game-landscape{aspect-ratio:16/9}.game-frame-wrap.game-square{aspect-ratio:1/1;max-width:720px}.game-frame{width:100%;height:100%;border:0}.game-thumbnail,.library-thumbnail{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:15px;margin-bottom:14px}@media(max-width:700px){.game-frame-wrap.game-portrait{aspect-ratio:9/16;max-width:100%}.game-frame-wrap.game-landscape{aspect-ratio:16/9}.game-frame-wrap.game-square{aspect-ratio:1/1}.game-card-head{display:block}}

.builder-section{margin-top:28px}
.block-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px}
.builder-block{border:1px solid var(--line);border-radius:16px;background:#fff;margin:14px 0;overflow:hidden}
.builder-block-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;background:var(--soft)}
.builder-block-head button{min-width:38px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;font-weight:800}
.builder-block-head .danger{color:#b42318}
.builder-block-body{padding:15px}

.library-controls{display:grid;grid-template-columns:2fr 1fr;gap:16px;margin-bottom:24px}
.resource-type-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:16px;background:var(--soft);color:var(--accent);font-weight:900;letter-spacing:.06em}
.resource-card{display:flex;flex-direction:column}.resource-card-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto}
.resource-picker{display:grid;gap:10px;max-height:420px;overflow:auto;padding-right:4px}
.resource-picker-item{display:flex;align-items:flex-start;gap:12px;padding:13px;border:1px solid var(--line);border-radius:14px;background:#fff;cursor:pointer}
.resource-picker-item.selected{background:var(--soft);border-color:var(--accent2)}
.resource-picker-item input{margin-top:4px}.resource-picker-item span{display:grid;gap:3px}.resource-picker-item small{color:var(--muted)}
.attached-resources{display:grid;gap:9px}.attached-resource{display:grid;gap:3px;padding:11px;border-radius:12px;background:var(--soft);text-decoration:none;color:inherit}.attached-resource small{color:var(--muted)}
.check-row{display:flex;align-items:center;gap:10px;font-weight:700;margin:14px 0}
@media(max-width:700px){.library-controls{grid-template-columns:1fr}}

.library-controls-three{grid-template-columns:2fr 1fr 1fr}
@media(max-width:900px){.library-controls-three{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.library-controls-three{grid-template-columns:1fr}}

.assessment-summary{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.certificate-sheet{background:#fff;border:12px double #103b46;padding:50px 34px;text-align:center;box-shadow:var(--shadow)}.certificate-mark{width:76px;height:76px;border-radius:24px;background:#103b46;color:#fff;display:grid;place-items:center;font-size:2.3rem;font-weight:900;margin:0 auto 20px}.certificate-details{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:34px 0}.certificate-details span{display:grid;gap:8px;padding:14px;background:var(--soft);border-radius:14px}.certificate-verify{font-size:.85rem;color:var(--muted);word-break:break-all}.verify-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.verify-grid p{padding:14px;background:var(--soft);border-radius:14px}.badge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.badge-card{display:flex;align-items:center;gap:12px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px}.badge-card span{font-size:2rem}@media(max-width:700px){.certificate-details,.verify-grid{grid-template-columns:1fr}}@media print{.topbar{display:none!important}.certificate-sheet{box-shadow:none}}

/* V10 instructor hub and engagement */
.v10-stats{grid-template-columns:repeat(4,1fr)}.announcement-grid{display:grid;gap:12px}.announcement-form{margin-bottom:18px}.search-box{min-width:260px;padding:12px 14px;border:1px solid var(--line);border-radius:12px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}.data-table th{background:var(--soft);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}.analytics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.analytics-card h3{margin:12px 0}.metric-row{display:flex;gap:12px;flex-wrap:wrap}.metric-row span{padding:8px 10px;background:var(--soft);border-radius:10px}.study-calendar{display:grid;grid-template-columns:repeat(14,1fr);gap:7px}.study-day{aspect-ratio:1;display:grid;place-items:center;border-radius:8px;background:#edf1ef;color:var(--muted);font-size:.74rem}.study-day.active{background:var(--accent);color:#fff;font-weight:800}@media(max-width:900px){.v10-stats{grid-template-columns:repeat(2,1fr)}.analytics-grid{grid-template-columns:1fr}}@media(max-width:560px){.v10-stats{grid-template-columns:1fr}.study-calendar{grid-template-columns:repeat(7,1fr)}.section-head{align-items:stretch;flex-direction:column}.search-box{min-width:0;width:100%}}