:root{--jr-navy:#061f43;--jr-blue:#0878ff;--jr-bg:#f6f9fd;--jr-border:#e3ebf5;--jr-text:#082d5c}html{scroll-behavior:smooth}body{background:var(--jr-bg);color:var(--jr-text)}.jr-v2-card,.card{border-radius:16px!important;border-color:var(--jr-border)!important;box-shadow:0 5px 18px rgba(8,45,92,.07)!important}.jr-v2-card:hover,.card:hover{box-shadow:0 12px 28px rgba(8,45,92,.11)!important}.teacher-sidebar,#activitySidebar{background:linear-gradient(180deg,#061f43,#082d5c)!important}.teacher-sidebar .nav.active{background:#0878ff!important}.teacher-sidebar .nav{border-radius:9px!important}.jr-v2-topline{height:3px;background:linear-gradient(90deg,#1688ff,#52b7ff,#1688ff)}button,a{transition:background-color .18s,border-color .18s,color .18s,transform .18s}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(8,120,255,.28);outline-offset:2px}@media(max-width:768px){.jr-desktop-only{display:none!important}}
@media(min-width:1024px){body.student-v2>header{display:none!important}body.student-v2>main,body.student-v2>footer{margin-left:220px}.student-v2-sidebar{display:flex!important}}.student-v2-sidebar{display:none;position:fixed;inset:0 auto 0 0;width:220px;z-index:45;background:linear-gradient(180deg,#061f43,#082d5c);color:#fff;flex-direction:column;padding:18px}.student-v2-sidebar a{display:flex;align-items:center;gap:11px;padding:12px 13px;border-radius:10px;font-size:13px;font-weight:800;color:#c9d9ec}.student-v2-sidebar a.active,.student-v2-sidebar a:hover{background:#0878ff;color:white}
/* Reference mockup — learning platform shell */
:root{--shell:#061a35;--shell2:#082a52;--primary:#076df2;--surface:#fff;--muted:#64748b}
.platform-shell{min-height:100vh;background:#f7faff;color:#082d5c}.platform-sidebar{width:220px;position:fixed;inset:0 auto 0 0;z-index:50;background:linear-gradient(180deg,var(--shell),var(--shell2));color:#fff;padding:18px 14px;display:flex;flex-direction:column}.platform-brand{display:flex;align-items:center;gap:10px;padding:8px 8px 18px;font-weight:900}.platform-nav{display:grid;gap:5px}.platform-nav a,.platform-nav button{display:flex;align-items:center;gap:11px;width:100%;min-height:44px;padding:10px 12px;border-radius:9px;color:#d9e7f7;font-size:12px;font-weight:750;text-align:left}.platform-nav a:hover,.platform-nav a.active,.platform-nav button:hover{background:var(--primary);color:#fff}.platform-main{margin-left:220px;min-height:100vh}.platform-topbar{height:66px;background:#fff;border-bottom:1px solid #e7eef7;display:flex;align-items:center;justify-content:space-between;padding:0 28px}.platform-content{padding:24px 28px}.platform-panel{background:#fff;border:1px solid #e5edf7;border-radius:15px;box-shadow:0 5px 18px rgba(8,45,92,.06)}.platform-stat{background:#fff;border:1px solid #e5edf7;border-radius:13px;padding:16px}.platform-progress{height:7px;border-radius:99px;background:#e8eef6;overflow:hidden}.platform-progress>span{display:block;height:100%;border-radius:99px;background:#0878ff}.activity-tabs{display:flex;gap:8px;flex-wrap:wrap}.activity-tabs a{padding:10px 20px;border-radius:7px;background:#edf3fa;font-size:12px;font-weight:800;color:#183d6a}.activity-tabs a.active{background:#e8f1ff;color:#066bf2;border-bottom:2px solid #066bf2}.teacher-table{width:100%;border-collapse:separate;border-spacing:0}.teacher-table th,.teacher-table td{padding:10px 12px;border-bottom:1px solid #edf2f7;font-size:12px}.teacher-table th{color:#64748b;text-align:left;font-weight:800}.teacher-table tbody tr:hover{background:#f8fbff}
@media(max-width:900px){.platform-sidebar{width:72px;padding:14px 8px}.platform-sidebar .nav-label,.platform-brand span{display:none}.platform-main{margin-left:72px}.platform-content{padding:18px 14px}.platform-topbar{padding:0 16px}}
@media(max-width:640px){.platform-sidebar{position:static;width:100%;height:auto;display:block}.platform-brand{padding-bottom:8px}.platform-nav{grid-template-columns:repeat(4,1fr)}.platform-nav a,.platform-nav button{justify-content:center;padding:8px;font-size:0}.platform-nav i{font-size:16px}.platform-main{margin-left:0}.platform-topbar{height:auto;min-height:58px}.platform-content{padding:14px 10px}}

/* Approved mockup fidelity */
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.platform-sidebar{width:190px;background:#061a35;padding:12px 10px}.platform-main{margin-left:190px}.platform-brand{height:56px;padding:8px 10px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:8px}.platform-nav a,.platform-nav button{border-radius:4px;min-height:42px;padding:10px 12px;font-size:11px}.platform-topbar{height:64px;padding:0 22px}.platform-content{padding:20px 22px}.platform-panel{border-radius:10px;box-shadow:0 2px 8px rgba(8,45,92,.045)}.mock-part{border:1px solid #dfe9f5;border-radius:9px;padding:13px;display:flex;flex-direction:column;min-height:145px}.mock-part b{font-size:13px}.mock-part small{font-size:10px;color:#64748b;margin-top:2px}.mock-part strong{font-size:19px;color:#082d5c;margin-top:18px}.mock-part a{margin-top:auto;border:1px solid #d9e5f3;border-radius:6px;padding:8px;text-align:center;font-size:10px;font-weight:800;color:#075fc7}.mock-part:first-child a{background:#0878ff;color:#fff;border-color:#0878ff}.mock-ring{width:92px;height:92px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(#0878ff 0 45%,#e8eef6 45%);position:relative}.mock-ring:after{content:"";position:absolute;inset:9px;border-radius:50%;background:white}.mock-ring span{position:relative;z-index:1;font-size:18px;font-weight:900}.mock-sequence{position:relative;display:flex;gap:14px;align-items:flex-start;border:1px solid #e2ebf5;border-radius:10px;padding:14px;background:#fff}.mock-seq-icon{width:42px;height:42px;border-radius:10px;background:#eaf3ff;color:#0878ff;display:grid;place-items:center;flex:none}.mock-journey{display:grid;gap:6px}.mock-journey>div{display:grid;grid-template-columns:28px 1fr 42px;align-items:center;gap:8px;border-radius:8px;background:#f7faff;padding:7px 9px;font-size:10px}.mock-journey span{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#e8f1ff;color:#0878ff;font-weight:900}.mock-journey>div:nth-child(2) span{background:#f0eaff;color:#7c3aed}.mock-journey>div:nth-child(3) span{background:#e7f8ef;color:#059669}.mock-journey b{font-size:10px}.mock-journey em{font-style:normal;font-weight:900;text-align:right}.platform-stat{border-radius:8px;box-shadow:none}.card{border-radius:10px!important;box-shadow:0 2px 8px rgba(8,45,92,.05)!important}
#activitySidebar{width:190px!important;background:#061a35!important}#activitySidebar~main{margin-left:190px}.activity-tabs{border-bottom:1px solid #e3ebf5;padding-bottom:0}.activity-tabs a{border-radius:5px 5px 0 0;background:#f0f5fb;padding:9px 18px}.activity-tabs a.active{background:#fff;border:1px solid #dce7f3;border-bottom:2px solid #0878ff}
@media(max-width:900px){.platform-sidebar{width:68px}.platform-main{margin-left:68px}.platform-content{padding:16px}.platform-brand{justify-content:center}.mock-sequence img{display:none!important}}
@media(max-width:640px){.platform-sidebar{position:fixed;bottom:0;top:auto;width:100%;height:62px;padding:5px;z-index:100}.platform-brand{display:none}.platform-nav{grid-template-columns:repeat(5,1fr);height:100%}.platform-nav a,.platform-nav button{min-height:50px;flex-direction:column;gap:3px;font-size:8px;padding:5px}.platform-nav .nav-label{display:block!important;font-size:8px}.platform-sidebar>.mt-auto{display:none}.platform-main{margin-left:0;padding-bottom:66px}.platform-topbar{min-height:58px}.platform-content{padding:12px}.mock-sequence{padding:11px}.mock-journey>div{grid-template-columns:26px 1fr 34px}}

/* v3 — strict shared sidebar/menu behavior from approved mockup */
#activitySidebar{width:190px!important;background:#061a35!important;color:#dbeafe!important;padding:10px!important;border:0!important}
#activitySidebar>.p-4:first-of-type{height:58px;padding:10px!important;background:transparent!important;border-bottom:1px solid rgba(255,255,255,.08)!important}
#activitySidebar .sidebar-toggle{right:-12px;top:17px;width:24px;height:24px;border:2px solid #061a35;background:#0878ff}
#activitySidebar .flex-1.overflow-y-auto{padding:8px 0!important}
#activitySidebar .sidebar-nav-link,#activitySidebar [data-go-part]{min-height:40px;border-radius:4px!important;padding:8px 10px!important;font-size:11px!important;color:#d9e7f7!important}
#activitySidebar .sidebar-nav-link:hover,#activitySidebar [data-go-part]:hover{background:#0d315b!important;color:white!important}
#activitySidebar .sidebar-section-label{font-size:9px!important;letter-spacing:.14em;color:#7fa4ca!important}
#activitySidebar .sidebar-nav-link i{color:#8dc5ff!important}
#activitySidebar .sidebar-progress{border-top-color:rgba(255,255,255,.08)!important;background:#05162d!important}
.activity-main{margin-left:190px!important;background:#f7faff!important;min-height:100vh}
body.sidebar-is-collapsed #activitySidebar{width:62px!important}
body.sidebar-is-collapsed .activity-main{margin-left:62px!important}
body.sidebar-is-collapsed #activitySidebar .sidebar-nav-link span,body.sidebar-is-collapsed #activitySidebar [data-go-part] span:not(:first-child),body.sidebar-is-collapsed #activitySidebar .sidebar-section-label,body.sidebar-is-collapsed #activitySidebar .sidebar-progress,body.sidebar-is-collapsed #activitySidebar h1,body.sidebar-is-collapsed #activitySidebar p{display:none!important}
body.sidebar-is-collapsed #activitySidebar .sidebar-nav-link,body.sidebar-is-collapsed #activitySidebar [data-go-part]{justify-content:center!important;padding-inline:0!important}
.activity-tabs{position:sticky;top:0;z-index:15;margin:0!important;padding:10px 22px 0!important;background:white;border-bottom:1px solid #e3ebf5;gap:4px!important}
.activity-tabs a{background:white!important;border:0!important;border-radius:0!important;padding:10px 18px!important;color:#60758e!important}
.activity-tabs a.active{color:#0878ff!important;border-bottom:3px solid #0878ff!important}
@media(max-width:900px){#activitySidebar{transform:translateX(-100%);width:230px!important;transition:transform .2s ease!important}#activitySidebar.open{transform:translateX(0)!important}.activity-main{margin-left:0!important}.mobile-menu{display:flex!important;position:fixed!important;left:12px!important;top:12px!important;z-index:70!important;width:42px!important;height:42px!important;border-radius:8px!important;background:#0878ff!important;color:#fff!important;align-items:center!important;justify-content:center!important}.sidebar-toggle{display:none!important}}

/* v4 — teacher mockup exact scale */
.teacher-sidebar{width:190px!important;padding:10px!important;background:#061a35!important}
.teacher-sidebar>div:first-child{padding:8px 6px 12px!important}.teacher-sidebar>div:first-child>div:first-child{width:30px!important;height:30px!important;border-radius:7px!important}.teacher-sidebar>div:first-child .text-lg{font-size:12px!important}.teacher-sidebar>div:first-child .text-xs{font-size:9px!important}.teacher-sidebar nav{margin-top:8px!important}.teacher-sidebar .nav{min-height:40px!important;padding:9px 10px!important;border-radius:4px!important;font-size:11px!important;display:flex!important;align-items:center!important;gap:8px!important}.teacher-sidebar .nav.active{background:#0878ff!important}
.teacher-sidebar+main{min-width:0!important;overflow-x:hidden!important}.teacher-sidebar+main>div{max-width:none!important;margin:0!important}.teacher-sidebar+main header h1{font-size:20px!important}.teacher-sidebar+main header p{font-size:11px!important}.teacher-sidebar+main .card{border-radius:8px!important}.teacher-sidebar+main section.grid.sm\:grid-cols-3 .card{padding:14px!important;min-height:86px}.teacher-sidebar+main section.grid.sm\:grid-cols-3 .text-3xl{font-size:24px!important}.teacher-sidebar+main section.grid.md\:grid-cols-4 .card{padding:12px!important;min-height:62px}.teacher-sidebar+main section.grid.md\:grid-cols-4 .text-2xl{font-size:20px!important}
@media(min-width:1024px){#teacherSidebar{display:flex!important}.teacher-sidebar+main{margin-left:0!important;width:calc(100vw - 190px)!important}}