:root{--lh-blue:#3f7291;--lh-blue-soft:#dceaf1;--lh-gold:#c99318;--lh-red:#c34f45;--lh-green:#4e7351;--lh-violet:#72659a}
.learning-shell{width:min(1480px,calc(100% - 56px));margin:0 auto;padding:104px 0 72px}
.learning-heading{position:relative;inset:auto;z-index:auto;width:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:30px;padding:26px 0 22px;border-bottom:1px solid var(--line-strong)}
.learning-kicker,.section-kicker{font-family:var(--font-mono);font-size:10px;font-weight:600;text-transform:uppercase;color:var(--graphite);margin-bottom:7px;letter-spacing:0}
.learning-heading h1{font-size:clamp(42px,5vw,68px);line-height:.95}
.learning-subtitle{max-width:700px;color:var(--graphite);font-size:14px;line-height:1.6;margin-top:10px}
.learning-heading-actions,.toolbar-actions,.planner-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.sync-chip{display:inline-flex;align-items:center;gap:8px;color:var(--graphite);font-size:11px;white-space:nowrap}
.sync-chip #syncStatusDot{width:7px;height:7px;border-radius:50%;background:var(--graphite);display:inline-block;margin:0!important}
.lh-button,.icon-button{appearance:none;border:1px solid var(--line-strong);background:var(--surface-60);color:var(--ink);font:600 12px var(--font-ui);height:38px;padding:0 14px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:transform .16s ease,background .16s ease,border-color .16s ease}
.lh-button:hover,.icon-button:hover{background:var(--paper-2);border-color:var(--graphite)}
.lh-button:active,.icon-button:active{transform:translateY(1px)}
.lh-button svg,.icon-button svg{width:15px;height:15px}
.lh-button-primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.lh-button-primary:hover{background:var(--signal-deep);color:#fff;border-color:var(--signal-deep)}
.icon-button{width:36px;padding:0}
.learning-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-bottom:1px solid var(--line-strong);padding:0}
.learning-metrics article{display:flex;align-items:center;gap:13px;padding:18px 20px;border-right:1px solid var(--line)}
.learning-metrics article:last-child{border-right:0}
.metric-icon{width:36px;height:36px;border-radius:6px;display:grid;place-items:center;color:#fff;flex:none}
.metric-icon svg{width:17px;height:17px}.metric-icon.review{background:var(--lh-violet)}.metric-icon.plan{background:var(--lh-blue)}.metric-icon.focus{background:var(--lh-green)}.metric-icon.exam{background:var(--lh-red)}
.learning-metrics small,.history-summary small{display:block;color:var(--graphite);font-size:10px;text-transform:uppercase;font-weight:700;margin-bottom:3px}
.learning-metrics strong{font-family:var(--font-mono);font-size:15px;font-weight:600}
.learning-tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-bottom:1px solid var(--line-strong);position:sticky;top:68px;z-index:20;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(18px)}
.learning-tab{border:0;border-right:1px solid var(--line);background:transparent;color:var(--graphite);height:58px;font:600 12px var(--font-ui);display:flex;align-items:center;justify-content:center;gap:9px;cursor:pointer;position:relative}
.learning-tab:last-child{border-right:0}.learning-tab svg{width:16px;height:16px}.learning-tab.active{color:var(--ink)}
.learning-tab.active::after{content:"";position:absolute;left:20%;right:20%;bottom:-1px;height:3px;background:var(--ink)}
.learning-tab b{min-width:19px;height:19px;border-radius:50%;display:grid;place-items:center;background:var(--lh-red);color:#fff;font:600 9px var(--font-mono)}
.learning-tab b:empty{display:none}
.learning-panel{padding:30px 0;min-height:560px}.learning-panel[hidden]{display:none}.learning-panel.active{animation:panelIn .25s ease both}@keyframes panelIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
.panel-toolbar{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:22px}
.panel-toolbar h2{font-size:34px}.panel-toolbar select,.panel-toolbar input{font-family:var(--font-ui)}
.search-field{height:38px;display:flex;align-items:center;gap:8px;border:1px solid var(--line-strong);background:var(--surface-50);padding:0 10px;border-radius:6px;min-width:210px}
.search-field svg{width:15px;height:15px;color:var(--graphite)}.search-field input{border:0;outline:0;background:transparent;color:var(--ink);min-width:0;width:100%;font-size:12px}
.lh-select,.lh-dialog select,.lh-dialog input,.lh-dialog textarea{height:38px;border:1px solid var(--line-strong);background:var(--surface-60);color:var(--ink);border-radius:6px;padding:0 11px;font:500 12px var(--font-ui);outline:none}
.lh-select:focus,.lh-dialog select:focus,.lh-dialog input:focus,.lh-dialog textarea:focus,.search-field:focus-within{border-color:var(--signal-deep);box-shadow:0 0 0 3px color-mix(in srgb,var(--signal) 14%,transparent)}
.memory-layout{display:grid;grid-template-columns:270px minmax(0,1fr);border:1px solid var(--line-strong);border-radius:8px;overflow:hidden;min-height:470px}
.review-queue{background:color-mix(in srgb,var(--paper-2) 72%,transparent);border-right:1px solid var(--line-strong)}
.queue-head{padding:17px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:11px;font-weight:700;text-transform:uppercase}.queue-head b{font:500 10px var(--font-mono);color:var(--lh-red)}
.queue-list{padding:8px}.queue-item{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);padding:12px 10px;text-align:left;cursor:pointer}.queue-item:hover,.queue-item.active{background:var(--surface-70)}.queue-item strong{display:block;font-size:12px;margin-bottom:4px;overflow-wrap:anywhere}.queue-item span{font-size:10px;color:var(--graphite)}
.queue-empty{padding:28px 14px;text-align:center;color:var(--graphite);font-size:12px;line-height:1.5}
.topic-workspace{min-width:0}.memory-review{padding:24px 26px;border-bottom:1px solid var(--line-strong);background:color-mix(in srgb,var(--lh-blue-soft) 24%,transparent)}
.review-meta{display:flex;justify-content:space-between;gap:15px;color:var(--graphite);font:500 10px var(--font-mono);text-transform:uppercase}.memory-review h3{font-family:var(--font-display);font-size:30px;margin:10px 0 7px}.memory-review>p{color:var(--graphite);font-size:12px;line-height:1.55;max-width:760px;white-space:pre-line}
.confidence-row{display:flex;align-items:center;gap:13px;margin-top:17px;font-size:11px;font-weight:700}.confidence-dots{display:flex;gap:5px}.confidence-dots i{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}.confidence-dots i.on{background:var(--lh-gold)}
.review-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:20px}.review-actions button{border:1px solid var(--line-strong);background:var(--surface-70);color:var(--ink);border-radius:6px;padding:10px;cursor:pointer}.review-actions button:hover{border-color:var(--ink)}.review-actions span,.review-actions small{display:block}.review-actions span{font-weight:700;font-size:11px}.review-actions small{font-size:9px;color:var(--graphite);margin-top:2px}
.topic-table-wrap{position:relative;min-height:245px;overflow-x:auto}.lh-table{width:100%;border-collapse:collapse;table-layout:fixed}.lh-table th{padding:12px 14px;text-align:left;color:var(--graphite);font-size:9px;text-transform:uppercase;border-bottom:1px solid var(--line);white-space:nowrap}.lh-table td{padding:14px;border-bottom:1px solid var(--line);font-size:12px;vertical-align:middle;overflow-wrap:anywhere}.lh-table tbody tr:hover{background:var(--surface-40)}.lh-table th:first-child{width:32%}.lh-table th:last-child{width:48px}.table-title{font-weight:700}.table-sub{display:block;font-size:10px;color:var(--graphite);margin-top:3px}.status-pill{display:inline-flex;align-items:center;min-height:23px;padding:0 8px;border-radius:100px;background:var(--paper-2);font:500 9px var(--font-mono)}.status-pill.due{background:color-mix(in srgb,var(--lh-red) 14%,var(--paper));color:var(--lh-red)}
.row-actions{display:flex;justify-content:flex-end;gap:3px}.row-actions button{border:0;background:transparent;color:var(--graphite);width:28px;height:28px;border-radius:5px;display:grid;place-items:center;cursor:pointer}.row-actions button:hover{background:var(--paper-2);color:var(--ink)}.row-actions svg{width:14px;height:14px}
.lh-empty{display:none;position:absolute;inset:0;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:28px;color:var(--graphite)}.lh-empty.visible{display:flex}.lh-empty svg{width:28px;height:28px;margin-bottom:12px}.lh-empty h3{font-size:14px;color:var(--ink);margin-bottom:5px}.lh-empty p{font-size:11px;line-height:1.5;max-width:380px;margin-bottom:13px}
.planner-controls label{display:flex;align-items:center;gap:8px;font-size:10px;font-weight:700;text-transform:uppercase;color:var(--graphite)}.planner-controls label span{height:38px;border:1px solid var(--line-strong);border-radius:6px;background:var(--surface-60);display:flex;align-items:center;padding-right:10px;color:var(--graphite);text-transform:none}.planner-controls input{width:67px;height:36px;border:0;background:transparent;color:var(--ink);padding:0 8px;outline:0;font-family:var(--font-mono)}
.plan-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(270px,.65fr);border:1px solid var(--line-strong);border-radius:8px;overflow:hidden;min-height:450px}.plan-timeline{padding:16px 22px}.plan-row-item{display:grid;grid-template-columns:76px 28px minmax(0,1fr) auto;gap:14px;align-items:center;min-height:74px;border-bottom:1px solid var(--line)}.plan-time{font:500 10px var(--font-mono);color:var(--graphite)}.plan-node{width:12px;height:12px;border:3px solid var(--paper);box-shadow:0 0 0 1px var(--line-strong);border-radius:50%;background:var(--lh-blue);position:relative}.plan-node::after{content:"";position:absolute;width:1px;height:63px;background:var(--line-strong);left:50%;top:10px}.plan-row-item:last-child .plan-node::after{display:none}.plan-item-copy strong{display:block;font-size:13px}.plan-item-copy span{font-size:10.5px;color:var(--graphite);line-height:1.4}.plan-row-item.done .plan-item-copy{text-decoration:line-through;opacity:.55}.plan-row-actions{display:flex;gap:5px}.plan-row-actions button,.plan-row-actions a{width:31px;height:31px;border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:5px;display:grid;place-items:center;cursor:pointer}.plan-row-actions svg{width:13px;height:13px}.plan-row-actions button:hover,.plan-row-actions a:hover{background:var(--paper-2)}
.plan-brief{border-left:1px solid var(--line-strong);padding:28px;background:color-mix(in srgb,var(--lh-blue-soft) 25%,transparent)}.plan-brief h3{font-family:var(--font-display);font-size:28px;margin-bottom:8px}.plan-brief>p:not(.section-kicker){font-size:12px;line-height:1.6;color:var(--graphite)}.plan-brief dl{margin-top:28px;border-top:1px solid var(--line)}.plan-brief dl div{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-bottom:1px solid var(--line)}.plan-brief dt{font-size:10px;color:var(--graphite);text-transform:uppercase}.plan-brief dd{font:600 11px var(--font-mono)}
.history-summary{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line-strong);border-radius:8px 8px 0 0}.history-summary article{padding:18px 20px;border-right:1px solid var(--line)}.history-summary article:last-child{border-right:0}.history-summary strong{font:600 19px var(--font-mono)}
.history-chart{height:185px;border:1px solid var(--line-strong);border-top:0;display:flex;align-items:flex-end;gap:8px;padding:24px 20px 28px;position:relative}.chart-day{height:100%;min-width:12px;flex:1;display:flex;align-items:flex-end;position:relative}.chart-bar{width:100%;min-height:3px;background:var(--lh-blue);border-radius:3px 3px 0 0;position:relative}.chart-bar:hover{background:var(--lh-gold)}.chart-day span{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%);font:500 8px var(--font-mono);color:var(--graphite)}.chart-day:nth-child(-n+7) span{display:none}.history-table-wrap{border:1px solid var(--line-strong);border-top:0;border-radius:0 0 8px 8px;min-height:220px}.history-table-wrap .lh-table th:first-child{width:17%}
.inbox-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;border:1px solid var(--line-strong);border-radius:8px;overflow:hidden;min-height:410px}.inbox-list{padding:0 20px}.inbox-item{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:13px;align-items:start;padding:18px 0;border-bottom:1px solid var(--line)}.inbox-type{width:32px;height:32px;border-radius:6px;display:grid;place-items:center;background:var(--paper-2);color:var(--lh-blue)}.inbox-type svg{width:15px;height:15px}.inbox-copy strong{font-size:13px}.inbox-copy p{font-size:11px;line-height:1.45;color:var(--graphite);margin-top:4px}.inbox-copy a{display:inline-block;font:500 9px var(--font-mono);color:var(--lh-blue);margin-top:6px;max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.inbox-actions{display:flex;gap:4px}.inbox-actions button{width:31px;height:31px;border:1px solid var(--line);border-radius:5px;background:transparent;color:var(--ink);display:grid;place-items:center;cursor:pointer}.inbox-actions button:hover{background:var(--paper-2)}.inbox-actions svg{width:13px;height:13px}.inbox-guide{border-left:1px solid var(--line-strong);padding:28px;background:color-mix(in srgb,var(--paper-2) 70%,transparent)}.inbox-guide>svg{width:28px;height:28px;color:var(--lh-gold);margin-bottom:19px}.inbox-guide h3{font-family:var(--font-display);font-size:25px}.inbox-guide p{font-size:11px;color:var(--graphite);line-height:1.55;margin:8px 0 20px}.route-legend{display:grid;gap:8px}.route-legend span{display:flex;align-items:center;gap:8px;font-size:10px;font-weight:700}.route-legend svg{width:14px;height:14px;color:var(--lh-blue)}#panel-inbox>.lh-empty{position:relative;min-height:330px}
.exam-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.exam-card{border:1px solid var(--line-strong);border-radius:8px;overflow:hidden}.exam-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:20px;border-bottom:1px solid var(--line)}.exam-card-head h3{font-family:var(--font-display);font-size:27px}.exam-card-head p{font-size:10px;color:var(--graphite);margin-top:3px}.risk-badge{height:25px;border-radius:100px;padding:0 9px;display:inline-flex;align-items:center;font:600 9px var(--font-mono);background:color-mix(in srgb,var(--lh-green) 15%,var(--paper));color:var(--lh-green)}.risk-badge.attention{background:color-mix(in srgb,var(--lh-gold) 16%,var(--paper));color:#8a6200}.risk-badge.critical{background:color-mix(in srgb,var(--lh-red) 13%,var(--paper));color:var(--lh-red)}
.exam-readiness{display:grid;grid-template-columns:112px minmax(0,1fr);gap:22px;padding:20px}.readiness-dial{width:108px;height:108px;border-radius:50%;display:grid;place-items:center;position:relative;background:conic-gradient(var(--lh-green) var(--progress),var(--line-strong) 0)}.readiness-dial::before{content:"";position:absolute;inset:9px;border-radius:50%;background:var(--paper)}.readiness-dial span{position:relative;text-align:center;font:600 18px var(--font-mono)}.readiness-dial small{display:block;font:700 8px var(--font-ui);text-transform:uppercase;color:var(--graphite);margin-top:2px}.exam-detail{display:flex;flex-direction:column;justify-content:center;gap:13px}.exam-detail-row{display:grid;grid-template-columns:100px minmax(0,1fr) auto;align-items:center;gap:9px}.exam-detail-row span{font-size:9px;text-transform:uppercase;color:var(--graphite)}.mini-track{height:6px;background:var(--line);border-radius:100px;overflow:hidden}.mini-track i{display:block;height:100%;background:var(--lh-blue)}.exam-detail-row b{font:500 9px var(--font-mono)}
.exam-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 20px;border-top:1px solid var(--line);background:var(--surface-40)}.unit-stepper{display:flex;align-items:center;gap:8px;font-size:10px;color:var(--graphite)}.unit-stepper button{width:26px;height:26px;border:1px solid var(--line-strong);background:transparent;color:var(--ink);border-radius:5px;cursor:pointer}.exam-controls>.row-actions{margin-left:auto}#panel-exams>.lh-empty{position:relative;min-height:360px}
.lh-dialog{width:min(500px,calc(100% - 28px));border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);border-radius:8px;padding:0;box-shadow:var(--shadow-deep)}.lh-dialog::backdrop{background:rgba(12,15,12,.58);backdrop-filter:blur(4px)}.lh-dialog form{padding:24px}.dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:20px}.dialog-head h2{font-size:31px}.lh-dialog label{display:grid;gap:7px;color:var(--graphite);font-size:10px;font-weight:700;text-transform:uppercase;margin-top:13px}.lh-dialog input,.lh-dialog select{width:100%}.lh-dialog textarea{height:auto;padding:10px 11px;resize:vertical;line-height:1.5}.form-split{display:grid;grid-template-columns:1fr 1fr;gap:12px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:23px}.lh-toast{position:fixed;right:22px;bottom:22px;z-index:500;max-width:360px;background:var(--ink);color:var(--paper);border-radius:6px;padding:12px 15px;font-size:11px;box-shadow:var(--shadow-lift);opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s ease}.lh-toast.show{opacity:1;transform:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1000px){.learning-shell{width:min(100% - 36px,1180px)}.learning-metrics{grid-template-columns:repeat(2,1fr)}.learning-metrics article:nth-child(2){border-right:0}.learning-metrics article:nth-child(-n+2){border-bottom:1px solid var(--line)}.memory-layout{grid-template-columns:220px minmax(0,1fr)}.plan-layout{grid-template-columns:1fr}.plan-brief{border-left:0;border-top:1px solid var(--line-strong)}.inbox-layout{grid-template-columns:1fr}.inbox-guide{display:none}.exam-grid{grid-template-columns:1fr}}
@media(max-width:720px){.learning-shell{width:calc(100% - 24px);padding-top:86px;padding-bottom:96px}.learning-heading{align-items:flex-start;flex-direction:column}.learning-heading-actions{width:100%;justify-content:space-between}.learning-tabs{top:62px;overflow-x:auto;grid-template-columns:repeat(5,minmax(78px,1fr))}.learning-tab{height:54px;flex-direction:column;gap:3px;font-size:9px}.learning-tab b{position:absolute;right:8px;top:6px}.learning-tab.active::after{left:12%;right:12%}.panel-toolbar{align-items:flex-start;flex-direction:column}.toolbar-actions,.planner-controls{width:100%}.search-field{flex:1;min-width:150px}.memory-layout{grid-template-columns:1fr}.review-queue{border-right:0;border-bottom:1px solid var(--line-strong);max-height:190px;overflow:auto}.review-actions{grid-template-columns:repeat(2,1fr)}.lh-table{min-width:660px}.plan-row-item{grid-template-columns:55px 18px minmax(0,1fr)}.plan-row-actions{grid-column:3}.history-summary{grid-template-columns:repeat(2,1fr)}.history-summary article:nth-child(2){border-right:0}.history-summary article:nth-child(-n+2){border-bottom:1px solid var(--line)}.history-chart{gap:4px;padding-left:10px;padding-right:10px}.exam-readiness{grid-template-columns:1fr}.readiness-dial{margin:auto}.form-split{grid-template-columns:1fr}.sync-chip{max-width:55%;overflow:hidden}.sync-chip span:last-child{overflow:hidden;text-overflow:ellipsis}}
@media(max-width:460px){.learning-heading h1{font-size:43px}.learning-metrics article{padding:14px 11px}.metric-icon{width:32px;height:32px}.learning-metrics strong{font-size:12px}.panel-toolbar h2{font-size:29px}.lh-button{padding:0 11px}.planner-controls label{flex:1}.planner-controls .lh-button{width:100%}.memory-review{padding:20px 16px}.exam-card-head,.exam-readiness,.exam-controls{padding-left:15px;padding-right:15px}.exam-controls{align-items:flex-start;flex-wrap:wrap}}
@media(max-width:720px){.learning-tabs{overflow:visible;grid-template-columns:repeat(5,minmax(0,1fr))}.learning-tab{min-width:0;font-size:8.5px}.learning-tab b{right:5px;top:5px}}
.exam-card-head{position:relative;inset:auto;z-index:auto;width:auto}