:root{--ls-ink:#0f172a;--ls-muted:#64748b;--ls-line:#dbe4ee;--ls-soft:#f3f8f7;--ls-teal:#0f766e;--ls-deep:#123e50;--ls-green:#16a085;--ls-warning:#b45309;--ls-danger:#b91c1c}
.ls-hero{display:flex;justify-content:space-between;gap:28px;align-items:center;padding:28px 30px;border-radius:24px;background:linear-gradient(120deg,#123e50,#0f766e);color:#fff;margin-bottom:22px}.ls-hero h2{font-size:clamp(25px,3vw,38px);line-height:1.12;margin:8px 0 10px}.ls-hero p{margin:0;max-width:760px;color:#d9f1ef}.ls-eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;color:#2dd4bf}.ls-version{min-width:150px;padding:18px 22px;border:1px solid rgba(255,255,255,.25);border-radius:18px;background:rgba(255,255,255,.1)}.ls-version strong{display:block;font-size:28px}.ls-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.ls-card{background:#fff;border:1px solid var(--ls-line);border-radius:20px;box-shadow:0 8px 28px rgba(15,23,42,.05)}.ls-course{display:flex;align-items:center;gap:16px;padding:20px;text-decoration:none;color:var(--ls-ink)}.ls-course>span{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:#ccfbf1;color:var(--ls-teal);font-size:28px;font-weight:800}.ls-course div{flex:1}.ls-course h3{margin:0 0 5px}.ls-course p{margin:0;color:var(--ls-muted)}.ls-course b{color:var(--ls-teal)}.ls-empty{padding:28px;border:1px dashed #94a3b8;border-radius:18px;background:#fff}.ls-empty strong{font-size:20px}.ls-progress-head,.ls-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.ls-progress-head>div{flex:1}.ls-progress{height:10px;background:#e2e8f0;border-radius:99px;overflow:hidden;margin-top:8px}.ls-progress i{display:block;height:100%;background:linear-gradient(90deg,#14b8a6,#0f766e)}.ls-module-list{display:grid;gap:14px}.ls-module{display:grid;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:18px;padding:18px 20px;background:#fff;border:1px solid var(--ls-line);border-radius:18px}.ls-module.is-locked{opacity:.62;background:#f8fafc}.ls-module-no{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;background:#e6fffb;color:var(--ls-teal);font-size:23px;font-weight:900}.ls-module-copy h3{margin:4px 0 6px}.ls-module-copy p{margin:0;color:var(--ls-muted)}.ls-tag{font-size:11px;font-weight:800;color:var(--ls-teal);letter-spacing:.08em}.ls-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.ls-meta span{font-size:12px;padding:5px 9px;border-radius:99px;background:#f1f5f9}.ls-module-action{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.ls-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:12px;padding:10px 15px;background:var(--ls-teal);color:#fff;text-decoration:none;font-weight:800;cursor:pointer}.ls-btn:hover{filter:brightness(.95)}.ls-btn-light{background:#edf4f4;color:var(--ls-deep);border:1px solid var(--ls-line)}.ls-btn-submit{background:#0b8f74;padding:13px 18px}.ls-lock{font-size:12px;color:var(--ls-muted);max-width:160px;text-align:right}.ls-status{display:inline-flex;padding:6px 10px;border-radius:99px;font-size:12px;font-weight:800;background:#e2e8f0;color:#475569}.ls-status-submitted,.ls-status-graded,.ls-status-completed{background:#dcfce7;color:#166534}.ls-status-revision{background:#ffedd5;color:#9a3412}.ls-status-in_progress{background:#dbeafe;color:#1d4ed8}.ls-two-col{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,.7fr);gap:18px;margin-bottom:18px}.ls-content,.ls-section,.ls-score-card{padding:22px}.ls-content ul{padding-left:22px}.ls-content li{margin-bottom:8px}.ls-reading{white-space:pre-line;line-height:1.72;color:#334155}.ls-score-card{align-self:start;position:sticky;top:82px}.ls-score-card>div:not(.ls-feedback){display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--ls-line)}.ls-score-card strong{font-size:20px}.ls-feedback{margin-top:16px;padding:14px;border-radius:14px;background:#fefce8}.ls-section{margin-bottom:18px}.ls-section-head{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:16px}.ls-section-head h2{margin:4px 0 0}.ls-question{border:1px solid var(--ls-line);border-radius:14px;padding:15px;margin:0 0 14px}.ls-question legend{font-weight:800;padding:0 6px}.ls-question label{display:flex;gap:8px;padding:8px;border-radius:9px}.ls-question label:hover{background:#f8fafc}.ls-label{display:grid;gap:7px;font-weight:800;margin-bottom:15px}.ls-label input,.ls-label textarea,.ls-label select,.ls-form-row select{width:100%;box-sizing:border-box;border:1px solid #cbd5e1;border-radius:11px;padding:11px 12px;background:#fff;color:var(--ls-ink);font:inherit}.ls-data{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.ls-result{margin-top:18px;border-top:1px solid var(--ls-line);padding-top:18px}.ls-result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.ls-result-item{padding:13px;border-radius:13px;background:var(--ls-soft)}.ls-result-item span{display:block;color:var(--ls-muted);font-size:12px}.ls-result-item strong{display:block;margin-top:4px;font-size:18px}.ls-result pre,.ls-section pre{overflow:auto;max-height:480px;padding:15px;border-radius:13px;background:#0f172a;color:#e2e8f0;font-size:12px}.ls-file{padding:10px 12px;background:#eff6ff;border-radius:10px}.ls-stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}.ls-stat-grid article{background:#fff;border:1px solid var(--ls-line);border-radius:16px;padding:17px}.ls-stat-grid span{display:block;color:var(--ls-muted)}.ls-stat-grid strong{font-size:30px}.ls-table-wrap{overflow:auto;background:#fff;border:1px solid var(--ls-line);border-radius:18px}.ls-table{width:100%;border-collapse:collapse;min-width:840px}.ls-table th,.ls-table td{padding:12px;border-bottom:1px solid var(--ls-line);text-align:center}.ls-table th:first-child,.ls-table td:first-child{text-align:left}.ls-table td small{display:block;color:var(--ls-muted)}.ls-score{display:inline-grid;place-items:center;min-width:34px;height:34px;border-radius:10px;background:#e2e8f0;color:#334155;text-decoration:none;font-weight:800}.ls-score-submitted{background:#fef3c7;color:#92400e}.ls-score-graded,.ls-score-completed{background:#dcfce7;color:#166534}.ls-muted{color:#94a3b8}.ls-dl{display:grid;grid-template-columns:1fr auto;gap:8px 16px}.ls-dl dt{color:var(--ls-muted)}.ls-dl dd{font-weight:800}.ls-form-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px}.ls-check{display:flex;gap:8px;align-items:center;margin:14px 0}.theme-dark .ls-card,.theme-dark .ls-module,.theme-dark .ls-table-wrap,.theme-dark .ls-stat-grid article{background:#111c2e;border-color:#334155;color:#e2e8f0}.theme-dark .ls-reading,.theme-dark .ls-course,.theme-dark .ls-module-copy p{color:#cbd5e1}.theme-dark .ls-label input,.theme-dark .ls-label textarea,.theme-dark .ls-label select{background:#0f172a;border-color:#475569;color:#e2e8f0}
@media(max-width:900px){.ls-two-col{grid-template-columns:1fr}.ls-score-card{position:static}.ls-stat-grid{grid-template-columns:repeat(2,1fr)}.ls-module{grid-template-columns:48px 1fr}.ls-module-action{grid-column:2;align-items:flex-start}.ls-form-grid{grid-template-columns:1fr}.ls-hero{align-items:flex-start}.ls-version{display:none}}
@media(max-width:560px){.ls-hero{padding:22px}.ls-module{padding:15px;gap:12px}.ls-stat-grid{grid-template-columns:1fr 1fr}.ls-progress-head,.ls-toolbar{align-items:flex-start;flex-wrap:wrap}.ls-content,.ls-section,.ls-score-card{padding:17px}}

.ls-admin-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.ls-admin-actions-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.ls-form-grid-compact{grid-template-columns:repeat(2,minmax(0,1fr))}
.ls-student-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px;max-height:460px;overflow:auto;padding:4px}
.ls-student-option{display:flex;align-items:flex-start;gap:10px;padding:13px;border:1px solid var(--ls-line);border-radius:13px;background:#fff;cursor:pointer}
.ls-student-option:hover{background:#f8fafc}
.ls-student-option input{margin-top:4px}
.ls-student-option span,.ls-student-option strong,.ls-student-option small{display:block}
.ls-student-option small{margin-top:3px;color:var(--ls-muted)}
.ls-course small{display:block;margin-top:5px;color:var(--ls-muted)}
@media(max-width:1100px){.ls-admin-actions-three{grid-template-columns:1fr 1fr}.ls-admin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.ls-admin-actions-three,.ls-admin-grid{grid-template-columns:1fr}.ls-form-grid-compact{grid-template-columns:1fr 1fr}}