/* Original MC Hub palette, organised as a readable learning portal. */
body.student-shell{background:#f1f5f9;color:#1e293b;font-size:16px}
.student-shell #sidebar-nav{width:256px;background:#fff;border-right:1px solid #e2e8f0}
.student-brand{padding:24px 18px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #f1f5f9}
.student-brand a{display:flex;align-items:center;gap:11px;color:#312e81;text-decoration:none;font-size:18px;font-weight:850}
.student-brand img{width:42px;height:42px;border-radius:12px}.student-brand small{display:block;font-size:12px;color:#64748b;font-weight:500;margin-top:5px}.student-brand button svg{width:20px;height:20px}
.student-navigation{flex:1;overflow-y:auto;padding:8px 14px 18px}.student-nav-label{font-size:12px;font-weight:800;color:#64748b;letter-spacing:1.5px;margin:20px 12px 8px}.student-nav-label:first-child{margin-top:12px}
.student-shell #sidebar-nav nav button{display:grid!important;grid-template-columns:20px minmax(0,1fr) auto!important;align-items:center!important;gap:12px!important;width:100%;padding:11px 12px!important;min-height:46px;text-align:left!important;font-size:15px!important;line-height:1.5;border-radius:10px!important;font-weight:600!important;color:#475569;background:transparent;box-shadow:none!important;transition:background .15s}
.student-shell #sidebar-nav nav button>svg{width:20px!important;height:20px!important;stroke-width:1.9;flex-shrink:0}.student-shell #sidebar-nav nav button>span:nth-child(2){justify-self:start;white-space:nowrap}.student-shell #sidebar-nav nav button:hover:enabled{background:#eef2ff;color:#4338ca}.student-shell #sidebar-nav nav button[aria-current=page]{background:linear-gradient(110deg,#e0e7ff,#eef2ff)!important;color:#4338ca!important;font-weight:800!important;box-shadow:inset 3px 0 #6366f1!important}.student-shell #sidebar-nav nav button:disabled{opacity:.55;cursor:default}.student-shell #sidebar-nav nav button small,.student-shell #sidebar-nav nav kbd{font-size:11px;color:#64748b;font-weight:500}.student-nav-count{font-size:12px;background:#ffe4e6;color:#be123c;min-width:23px;text-align:center;border-radius:6px;line-height:23px}.student-live{font-size:11px;color:#6366f1!important}.student-shell #sidebar-nav [hidden]{display:none!important}
.student-account{padding:18px;border-top:1px solid #e2e8f0;background:#f8fafc}.student-account #hub-account{display:flex;justify-content:space-between;color:#334155;font-size:14px;font-weight:700}.student-account #hub-admin{display:block;font-size:14px;color:#4f46e5;margin-top:10px}.student-account #hub-sync{font-size:12px;color:#64748b;margin-top:10px;line-height:1.6}.student-account #hub-retry{font-size:13px;color:#4f46e5}
.student-shell #main-scroll-container{padding-bottom:68px;background:#f1f5f9}.student-shell #app-content{padding:28px 32px;min-height:calc(100% - 105px);max-width:1440px;margin:0 auto;width:100%}
.student-shell #app-content .text-xs{font-size:14px;line-height:1.6}.student-shell #app-content .text-sm{font-size:16px;line-height:1.65}.student-shell #app-content .text-\[11px\]{font-size:13px;line-height:1.5}
.portal-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.portal-heading>div>span{font-size:12px;font-weight:800;letter-spacing:1.5px;color:#6366f1}.portal-heading h1{font-size:28px;font-weight:850;margin:7px 0 0;color:#1e293b}.portal-heading>button{display:flex;align-items:center;gap:7px;font-size:14px;color:#4f46e5;font-weight:700;white-space:nowrap}.portal-heading svg{width:17px;height:17px}.study-dashboard>.grid>div{padding:18px 16px}.study-dashboard .portal-hero{position:relative;overflow:hidden;background:radial-gradient(ellipse at 90% 0%,#4f46e5aa,transparent 65%),linear-gradient(120deg,#0f172a,#252052 65%,#312e81);border:1px solid #4338ca55;min-height:220px}.portal-hero h2{line-height:1.4;font-size:30px}.portal-hero-actions{min-width:210px}.portal-hero-actions button{font-size:16px!important;padding:16px 20px}.portal-hero-actions button svg{width:20px;height:20px}.portal-shortcuts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.portal-shortcuts>button{display:flex;gap:12px;align-items:center;padding:18px;background:#fff;border:1px solid #e2e8f0;border-radius:16px;text-align:left;transition:box-shadow .2s,transform .2s}.portal-shortcuts>button:hover{box-shadow:0 5px 18px #3341550c;transform:translateY(-2px)}.portal-shortcuts strong{display:block;font-size:16px;font-weight:800}.portal-shortcuts small{display:block;font-size:12px;color:#64748b;margin-top:5px;line-height:1.5}.portal-shortcuts>button>svg{width:16px;height:16px;color:#94a3b8;margin-left:auto;flex-shrink:0}.portal-shortcut-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;flex-shrink:0}.portal-shortcut-icon svg{width:23px;height:23px}.portal-shortcut-icon.rose{background:#fff1f2;color:#e11d48}.portal-shortcut-icon.blue{background:#eff6ff;color:#2563eb}.portal-shortcut-icon.green{background:#ecfdf5;color:#059669}.portal-section-subtitle{font-size:12px;letter-spacing:1px;color:#94a3b8;margin-left:10px;font-weight:600}
.study-page{max-width:1080px;margin:6px auto}.study-page-head{margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid #dce3ee}.study-page-head>span{font-size:13px;letter-spacing:1.6px;color:#6366f1;font-weight:800}.study-page-head h1{font-size:30px;font-weight:850;letter-spacing:-.5px;color:#1e293b;margin:10px 0}.study-page-head p{font-size:16px;color:#64748b}.study-subject-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.study-subject-card{display:grid;grid-template-columns:54px 1fr;gap:16px;text-align:left;align-items:center;padding:27px;background:#fff;border:1px solid #e2e8f0;border-top:4px solid #6366f1;border-radius:18px;transition:border .2s,box-shadow .2s}.study-subject-card:nth-child(2){border-top-color:#3b82f6}.study-subject-card:nth-child(3){border-top-color:#f59e0b}.study-subject-card:nth-child(4){border-top-color:#10b981}.study-subject-card:hover{box-shadow:0 6px 20px #4338ca12;border-color:#a5b4fc}.study-subject-symbol{font-size:30px;color:#4f46e5;width:54px;height:54px;display:grid;place-items:center;background:#eef2ff;border-radius:15px;font-family:Georgia,serif}.study-subject-card:nth-child(2) .study-subject-symbol{background:#eff6ff;color:#2563eb}.study-subject-card:nth-child(3) .study-subject-symbol{background:#fffbeb;color:#d97706}.study-subject-card:nth-child(4) .study-subject-symbol{background:#ecfdf5;color:#059669}.study-subject-card strong{display:block;color:#1e293b;font-size:20px;font-weight:800}.study-subject-card small{display:block;font-size:14px;color:#64748b;margin-top:5px}.study-subject-end{grid-column:2;display:flex;align-items:center;gap:10px;font-size:14px;color:#4f46e5;font-weight:650;margin-top:2px}.study-subject-end svg{width:17px;height:17px}.study-mixed{display:flex;gap:12px;align-items:center;width:100%;margin-top:20px;border:1px solid #c7d2fe;border-radius:14px;padding:20px;color:#4338ca;font-size:16px;font-weight:700;background:#eef2ff}.study-mixed>span:last-child{margin-left:auto;display:flex;gap:10px;align-items:center}.study-mixed svg{width:20px;height:20px}
.study-training-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.study-training-grid>section{background:white;border:1px solid #e2e8f0;border-radius:18px;padding:26px;display:flex;flex-direction:column;align-items:flex-start}.study-training-grid>section>svg{width:30px;height:30px;color:#6366f1;margin-bottom:22px}.study-training-grid>section:first-child>svg{color:#e11d48}.study-training-grid>section:nth-child(2)>svg{color:#d97706}.study-training-grid h2{font-size:20px;font-weight:800;color:#1e293b}.study-training-grid p{font-size:15px;color:#64748b;line-height:1.8;margin:12px 0 25px;flex:1}.study-secondary{font-size:15px;font-weight:700;color:#4338ca;background:#eef2ff;padding:12px 16px;border-radius:10px;display:flex;gap:18px;align-items:center}.study-secondary:disabled{opacity:.45;cursor:default}.study-secondary-note{font-size:14px;color:#64748b;margin:20px 0;line-height:1.8}.study-secondary-note a{color:#4f46e5}.study-setting-card{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:26px;background:white;border:1px solid #e2e8f0;border-radius:18px;margin-bottom:20px}.study-setting-card h2{font-size:20px;color:#1e293b;font-weight:800}.study-setting-card p{font-size:15px;color:#64748b;margin-top:10px}.study-danger{color:#be123c;font-size:14px;font-weight:700;padding:12px;border:1px solid #fecdd3;border-radius:10px;background:#fff1f2}.study-benchmark{padding:22px 24px;background:white;border:1px solid #e2e8f0;border-radius:16px;margin:0 0 24px;color:#64748b;font-size:14px}.study-benchmark summary{display:flex;justify-content:space-between;gap:20px;cursor:pointer}.study-benchmark summary strong{color:#4f46e5;margin-left:10px}.study-benchmark p{line-height:1.9;margin-top:18px;font-size:14px}.study-benchmark>div{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-top:20px}.study-benchmark>div span strong,.study-benchmark>div span small{display:block;font-size:13px;margin:4px 0}
.student-shell #study-status-rail{position:fixed;left:256px;right:0;bottom:0;min-height:58px;background:#ffffffed;backdrop-filter:blur(10px);border-top:1px solid #dbe3ef;z-index:25;display:flex;justify-content:space-between;align-items:center;padding:13px 32px;gap:18px;box-sizing:border-box}.study-rail-stats{display:flex;gap:24px;align-items:center;font-size:13px;color:#64748b}.study-rail-stats strong{font-size:15px;font-weight:800;color:#334155;margin-left:7px;font-variant-numeric:tabular-nums}.study-seed{display:flex;gap:8px;align-items:center;color:#059669;font-size:14px}.study-seed svg{width:20px;height:20px}.study-seed strong{font-size:15px;font-weight:800}.study-seed small{font-size:12px;color:#64748b;min-width:29px}.study-seed-meter{width:58px;height:5px;background:#d1fae5;border-radius:5px;overflow:hidden}.study-seed-meter>span{display:block;height:100%;background:#10b981}
.student-shell .hub-feedback-launch{right:22px;bottom:78px;font-size:14px;background:#4f46e5!important;color:white!important;box-shadow:0 4px 16px #4f46e530;z-index:26}.student-shell .hub-feedback-box{bottom:134px}.student-shell .hub-disclaimer{font-size:12px;padding:16px 0;max-width:calc(100% - 64px);margin:12px auto 0;color:#64748b}.student-shell .hub-disclaimer strong,.student-shell .hub-disclaimer a,.student-shell .hub-disclaimer summary{font-size:12px}.student-shell #toast-banner{bottom:80px;right:170px}.student-shell .hub-guest-notice{bottom:80px;right:170px}.student-shell .learn h1{font-size:30px;font-weight:800}.student-shell .learn-kicker{font-size:13px;font-weight:750;color:#6366f1}.student-shell #app-content .learn-challenge{display:none}.student-shell button:focus-visible,.student-shell a:focus-visible{outline:3px solid #818cf8;outline-offset:3px}.student-mobilebar a{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#312e81}.student-mobilebar img{width:35px;height:35px;border-radius:10px}.student-mobilebar button{padding:8px;color:#475569}.student-mobilebar button svg{width:23px;height:23px}
@media(max-width:1100px){.student-shell #app-content{padding:24px}.study-dashboard>.grid>div{padding:16px 12px;gap:10px}.study-dashboard>.grid>div>div:first-child{padding:9px}.study-dashboard>.grid>div>div:last-child>p:first-child{letter-spacing:0;font-size:12px}.portal-hero h2{font-size:27px}.portal-shortcuts{gap:12px}.portal-shortcuts>button{padding:15px 12px;gap:10px}.portal-shortcuts small{font-size:12px}.portal-shortcut-icon{width:34px;height:38px}.study-training-grid{grid-template-columns:1fr}.student-shell #study-status-rail{padding-left:24px;padding-right:24px}}
@media(max-width:767px){.student-shell #sidebar-nav{width:266px}.student-shell #study-status-rail{left:0;padding:13px 16px;min-height:60px;padding-bottom:calc(13px + env(safe-area-inset-bottom))}.student-shell #main-scroll-container{padding-bottom:calc(75px + env(safe-area-inset-bottom))}.student-shell #app-content{padding:22px 16px}.portal-heading{align-items:flex-start}.portal-heading h1{font-size:25px}.portal-heading>div>span{font-size:11px;letter-spacing:1px}.portal-heading>button{font-size:12px;margin-top:8px}.portal-heading>button svg{display:none}.study-dashboard>.grid{gap:10px}.study-dashboard>.grid>div{padding:14px 10px}.study-dashboard>.grid>div>div:first-child{padding:7px}.study-dashboard>.grid>div svg{width:20px;height:20px}.study-dashboard>.grid>div .text-2xl{font-size:22px}.portal-hero h2{font-size:27px}.portal-hero-actions{min-width:0;flex-direction:row;flex-wrap:wrap}.portal-hero-actions button{flex:1;white-space:nowrap;font-size:15px!important;padding:14px}.portal-shortcuts{grid-template-columns:1fr;gap:10px}.portal-shortcuts>button{padding:14px 16px}.portal-shortcuts>button>span:nth-child(2){display:flex;align-items:center;flex:1;gap:12px}.portal-shortcuts small{margin:0;font-size:12px}.portal-section-subtitle{display:none}.study-page-head h1{font-size:27px}.study-subject-grid{grid-template-columns:1fr;gap:14px}.study-subject-card{padding:22px;gap:14px}.study-subject-card strong{font-size:19px}.study-subject-card small{font-size:13px}.study-rail-stats{gap:13px;font-size:12px}.study-rail-stats strong{font-size:14px;margin-left:4px}.study-seed{gap:5px}.study-seed-meter{width:30px}.study-seed small{font-size:10px}.study-benchmark{padding:18px}.study-benchmark summary{font-size:13px;flex-wrap:wrap;gap:8px}.study-benchmark>div{grid-template-columns:1fr 1fr}.study-setting-card{align-items:flex-start;flex-direction:column}.student-shell .hub-disclaimer{max-width:calc(100% - 32px);line-height:1.9}.student-shell .hub-feedback-launch{right:16px;bottom:calc(80px + env(safe-area-inset-bottom))}.student-shell .hub-feedback-box{bottom:calc(137px + env(safe-area-inset-bottom))}.student-shell .hub-guest-notice{bottom:140px;right:16px;max-width:calc(100% - 32px)}.student-shell #toast-banner{right:16px;bottom:140px;max-width:calc(100% - 32px)}}
@media(prefers-reduced-motion:reduce){.portal-shortcuts>button{transition:none}.portal-shortcuts>button:hover{transform:none}}
.portal-subject-accuracy{white-space:nowrap;flex-shrink:0}.study-dashboard>.grid>div>div:last-child>p:first-child{color:#64748b}
@media(max-width:767px){.portal-subject-heading{flex-wrap:wrap}.portal-subject-heading>div{min-width:0}.portal-subject-heading h4{font-size:20px}.portal-subject-heading>div>div:first-child{padding:10px}.portal-subject-accuracy{margin-left:57px;font-size:13px!important}.portal-hero-actions button{flex-basis:100%}}
/* The dashboard overview has its own row outside the scrolling content. */
.student-workspace{display:flex;flex-direction:column;flex:1;min-width:0;min-height:0;overflow:hidden}
.student-workspace #main-scroll-container{flex:1;min-height:0;padding-top:0}
#study-fixed-overview{flex-shrink:0;padding:16px 32px 14px;background:#f1f5f9;border-bottom:1px solid #dbe3ef;box-shadow:0 3px 12px #33415505;z-index:20}
#study-fixed-overview[hidden]{display:none}
#study-fixed-overview .portal-heading{max-width:1376px;margin:0 auto 12px}
#study-fixed-overview .portal-heading>div{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
#study-fixed-overview .portal-heading h1{font-size:20px;margin:0}
#study-fixed-overview .portal-heading>div>span{font-size:11px;letter-spacing:1px}
#study-fixed-overview .portal-heading>button{font-size:13px}
#study-fixed-overview .portal-overview{max-width:1376px;margin:auto;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
#study-fixed-overview .portal-overview>div{padding:10px 14px;border-radius:12px;gap:10px;min-width:0}
#study-fixed-overview .portal-overview>div>div:first-child{padding:8px;border-radius:10px}
#study-fixed-overview .portal-overview svg{width:20px;height:20px}
#study-fixed-overview .portal-overview>div>div:last-child{min-width:0}
#study-fixed-overview .portal-overview p:first-child{font-size:12px;color:#64748b;letter-spacing:0;line-height:1.4}
#study-fixed-overview .portal-overview p:last-child{font-size:20px;line-height:1.4}
.student-shell .study-seed{gap:10px}.student-shell .study-seed svg{width:23px;height:23px}.student-shell .study-seed-meter{width:200px;height:11px;background:#d1fae5;border:1px solid #a7f3d0;border-radius:8px}.student-shell .study-seed-meter>span{background:linear-gradient(90deg,#34d399,#059669);border-radius:8px}.student-shell .study-seed small{font-size:13px;font-weight:650}
@media(max-width:1100px){#study-fixed-overview{padding:14px 24px}#study-fixed-overview .portal-heading>div>span{display:none}#study-fixed-overview .portal-overview>div{padding:10px;gap:8px}#study-fixed-overview .portal-overview>div>div:first-child{padding:6px}.student-shell .study-seed-meter{width:140px}}
@media(max-width:767px){.student-workspace{padding-top:64px}#study-fixed-overview{padding:12px 16px 10px}#study-fixed-overview .portal-heading{margin-bottom:10px;gap:8px}#study-fixed-overview .portal-heading h1{font-size:18px}#study-fixed-overview .portal-heading>button{font-size:11px;margin:0}#study-fixed-overview .portal-overview{gap:7px}#study-fixed-overview .portal-overview>div{padding:8px 5px;display:block;text-align:center;border-radius:10px}#study-fixed-overview .portal-overview>div>div:first-child{display:none}#study-fixed-overview .portal-overview>div>div:last-child{margin:0}#study-fixed-overview .portal-overview p:first-child{font-size:10px;min-height:28px;display:flex;align-items:center;justify-content:center;overflow-wrap:anywhere}#study-fixed-overview .portal-overview p:last-child{font-size:18px}.student-shell #study-status-rail{flex-wrap:wrap;gap:10px;padding-top:10px;padding-bottom:calc(10px + env(safe-area-inset-bottom))}.study-rail-stats{justify-content:space-between;width:100%}.student-shell .study-seed{width:100%;gap:10px}.student-shell .study-seed-meter{width:auto;flex:1;height:11px}.student-shell #main-scroll-container{padding-bottom:calc(110px + env(safe-area-inset-bottom))}.student-shell .hub-feedback-launch{bottom:calc(112px + env(safe-area-inset-bottom))}.student-shell .hub-feedback-box{bottom:calc(169px + env(safe-area-inset-bottom))}.student-shell .hub-guest-notice,.student-shell #toast-banner{bottom:172px}}
.portal-start-zone{min-height:330px;display:flex;align-items:center;justify-content:center}
.portal-start-button{display:flex;align-items:center;justify-content:center;gap:20px;padding:24px 38px;min-width:280px;border-radius:20px;background:linear-gradient(120deg,#4f46e5,#6366f1);color:white;font-size:22px;font-weight:800;box-shadow:0 10px 26px #4f46e52b;transition:transform .15s,box-shadow .15s}
.portal-start-button:hover{transform:translateY(-2px);box-shadow:0 14px 30px #4f46e53b}.portal-start-button svg{width:25px;height:25px}.portal-start-button svg:last-child{width:20px;height:20px}
@media(max-width:767px){.portal-start-zone{min-height:290px}.portal-start-button{min-width:250px;padding:22px 28px;font-size:21px}}
@media(prefers-reduced-motion:reduce){.portal-start-button{transition:none}.portal-start-button:hover{transform:none}}
.student-account #hub-admin:not([hidden]){display:flex;align-items:center;justify-content:space-between;gap:9px;background:linear-gradient(110deg,#6354e9,#4f46c9);color:white;border:1px solid #5345c9;box-shadow:0 4px 12px #6354e92b;padding:13px 14px;border-radius:12px;margin:0 0 12px;font-size:15px;font-weight:800;text-decoration:none}.student-account #hub-admin:hover{filter:brightness(1.06)}.student-account #hub-account{justify-content:flex-start;gap:10px;border-radius:10px;padding:7px 2px;min-height:48px;text-decoration:none}.student-account #hub-account:hover{background:#eef2ff}.student-account #hub-account>.hub-avatar{width:38px;height:38px;font-size:26px;margin:0}.student-account-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.student-account-name small{display:block;font-size:11px;color:#8792a5;font-weight:400;margin-top:3px}.student-account #hub-account>span:last-child{color:#8a94a8}.student-account #hub-admin:focus-visible,.student-account #hub-account:focus-visible{outline:3px solid #a5b4fc;outline-offset:3px}
.study-announcement{border:1px solid #d9ddfa;border-left:4px solid #8b82d9;border-radius:12px;background:#f9f8ff;padding:15px 18px;margin-bottom:22px;color:#54516f;font-size:14px}.study-announcement strong{display:block;margin-bottom:5px;color:#49446c}.study-announcement p{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;margin:0}
.portal-join{text-align:center;margin:12px auto 26px}.portal-join>a{display:inline-flex;align-items:center;gap:18px;background:linear-gradient(135deg,#e9e5ff,#d8d2ff);color:#4430b8;border:1px solid #bcb1f3;border-radius:12px;padding:12px 32px;font-size:18px;font-weight:750;box-shadow:0 5px 16px #6d5bd02b,inset 0 1px 0 #ffffffa6}.portal-join>a:hover{background:linear-gradient(135deg,#e2dcff,#cec5fc)}.portal-join>a:focus-visible{outline:3px solid #a5b4fc;outline-offset:3px}.portal-join p{font-size:14px;color:#7a869d;margin-top:9px}

.student-account #hub-account[href^="/login"]{background:linear-gradient(135deg,#e9e5ff,#d8d2ff);color:#4430b8;border:1px solid #bcb1f3;padding:10px 12px;font-weight:750;box-shadow:0 4px 12px #6d5bd026,inset 0 1px 0 #ffffffa6}.student-account #hub-account[href^="/login"]:hover{background:linear-gradient(135deg,#e2dcff,#cec5fc)}.student-account #hub-account[href^="/login"]>span:last-child{color:#4430b8}