/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--spacing:.25rem;--default-font-family:var(--font-geist-sans);--default-mono-font-family:var(--font-geist-mono)}}@layer base{*,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){-webkit-appearance:button;appearance:button}::file-selector-button{-webkit-appearance:button;appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.start{inset-inline-start:var(--spacing)}.hidden{display:none}.table{display:table}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}}:root{--background:#f5f7fb;--surface:#fff;--surface-soft:#eef5ff;--text:#172033;--muted:#64748b;--line:#dbe4ef;--blue:#1d5fd1;--blue-dark:#123f91;--green:#12805c;--orange:#e36b2c;--red:#c93232}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}.srOnly{width:1px;height:1px;margin:-1px;position:absolute;overflow:hidden}.siteHeader{border-bottom:1px solid var(--line);z-index:10;background:#ffffffe6;justify-content:space-between;align-items:center;padding:16px clamp(18px,4vw,56px);display:flex;position:sticky;top:0}.brand{align-items:center;gap:12px;display:flex}.brandIcon{background:var(--blue);color:#fff;letter-spacing:0;border-radius:8px;place-items:center;width:52px;height:40px;font-size:12px;font-weight:800;display:grid}.brand strong,.brand small{display:block}.brand small{color:var(--muted);margin-top:2px;font-size:12px}.topNav{align-items:center;gap:10px;display:flex}.topNav a{border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 14px;font-weight:700}.topNav a:last-child,.singleNav a{background:var(--text);color:#fff}.homePage{min-height:100vh}.homeHeader{position:static}.homeShell{gap:28px;max-width:1080px;margin:0 auto;padding:56px clamp(18px,4vw,56px) 72px;display:grid}.homeIntro{text-align:center}.homeIntro h1{max-width:720px;margin-left:auto;margin-right:auto;font-size:clamp(34px,5vw,56px)}.homeSearch{margin-top:24px;margin-left:auto;margin-right:auto}.homeCoursePanel{background:var(--surface);border:1px solid var(--line);border-radius:12px;gap:28px;padding:clamp(20px,3vw,30px);display:grid;box-shadow:0 18px 55px #17203314}.homeCourseGroup{gap:14px;display:grid}.homeCourseGroup .sectionTitle{border-bottom:1px solid var(--line);margin-bottom:0;padding-bottom:12px}.homeCourseGroup h2{margin-bottom:0;font-size:24px}.hero,.quickSection,.splitSection,.pageIntro,.resourceLayout,.detailShell,.loginShell{max-width:1200px;margin:0 auto;padding:42px clamp(18px,4vw,56px)}.resourceHero{grid-template-columns:minmax(0,1fr) 360px;align-items:center;gap:32px;min-height:560px;display:grid}.simpleHero{text-align:center;min-height:auto;padding-top:72px;padding-bottom:24px;display:block}.simpleHero .heroText{max-width:820px;margin:0 auto}.simpleHero h1{max-width:720px;margin-left:auto;margin-right:auto}.simpleHero .searchPanel{margin-left:auto;margin-right:auto}.eyebrow{color:var(--blue);letter-spacing:0;text-transform:uppercase;margin:0 0 10px;font-size:13px;font-weight:800}h1,h2,h3,p{margin-top:0}h1{margin-bottom:18px;font-size:clamp(36px,5vw,64px);line-height:1.08}h2{margin-bottom:12px;font-size:clamp(26px,3vw,38px);line-height:1.15}.lead,.pageIntro p{color:var(--muted);max-width:780px;font-size:18px;line-height:1.8}.searchPanel{background:var(--surface);border:1px solid var(--line);border-radius:10px;grid-template-columns:1fr 140px;gap:10px;max-width:720px;margin-top:28px;padding:10px;display:grid;box-shadow:0 18px 50px #17203314}input,select{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:46px;padding:0 12px}.searchPanel input{border:0}.searchPanel button,.filterPanel button,.loginCard button,.panelHead button,.adminPanel button,.downloadButton{background:var(--blue);color:#fff;border:0;border-radius:8px;justify-content:center;min-height:46px;padding:13px 16px;font-weight:800;display:inline-flex}.heroBoard{background:var(--surface);border:1px solid var(--line);border-radius:12px;gap:14px;padding:20px;display:grid;box-shadow:0 20px 60px #1d5fd124}.heroBoard div,.statGrid div,.detailGrid div{background:var(--surface-soft);border:1px solid var(--line);border-radius:8px;padding:18px}.heroBoard span,.statGrid span,.detailGrid span{color:var(--muted);font-size:14px;display:block}.heroBoard strong,.statGrid strong,.detailGrid strong{margin-top:8px;font-size:34px;display:block}.sectionTitle{margin-bottom:20px}.compactHome{padding-top:24px;padding-bottom:24px}.quickGrid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.quickGrid a,.resourceCard,.downloadPanel,.loginCard,.adminPanel{background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 30px #1720330d}.quickGrid a{padding:22px}.quickGrid strong,.quickGrid span{display:block}.quickGrid strong{margin-bottom:8px;font-size:24px}.quickGrid span,.resourceCard p,.updateList small,.downloadPanel p,.adminPanel p,.loginCard p,.loginCard small{color:var(--muted);line-height:1.7}.coursePills{flex-wrap:wrap;gap:12px;display:flex}.courseGrid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.coursePills a,.courseGrid a,.tag,.cardMeta span{color:var(--blue-dark);text-align:center;background:#e8f0ff;border-radius:8px;padding:18px 20px;font-weight:800}.splitSection{grid-template-columns:1fr 1fr;gap:24px;display:grid}.resourceList{gap:14px;display:grid}.resourceList.compact{grid-template-columns:1fr}.resourceCard{padding:22px;display:block}.emptyState{background:var(--surface);border:1px dashed var(--line);text-align:center;border-radius:8px;padding:32px}.emptyState p{color:var(--muted);margin-bottom:0}.resourceCard h2,.resourceCard h3{margin:14px 0 10px}.resourceCard strong{color:var(--blue)}.updateList{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden}.updateList a{border-bottom:1px solid var(--line);gap:6px;padding:16px;display:grid}.updateList a:last-child{border-bottom:0}.updateList span{color:var(--muted);font-size:13px}.resourceLayout{grid-template-columns:280px 1fr;align-items:start;gap:22px;display:grid}.directoryLayout{gap:22px;max-width:1200px;margin:0 auto;padding:16px clamp(18px,4vw,56px) 42px;display:grid}.directoryLayout .filterPanel{position:static}.directoryLayout .filterPanel form{grid-template-columns:1fr 120px;align-items:end}.filterPanel{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:18px;position:sticky;top:88px}.filterPanel form,.loginCard{gap:14px;display:grid}.filterPanel label,.loginCard label{color:var(--text);gap:8px;font-weight:800;display:grid}textarea{border:1px solid var(--line);resize:vertical;background:#fff;border-radius:8px;min-height:92px;padding:12px}.horizontal{grid-template-columns:1fr 180px;align-items:center;gap:18px;display:grid}.cardMeta{flex-wrap:wrap;gap:8px;display:flex}.cardMeta .hot{color:var(--orange);background:#fff1e8}.cardActions{gap:10px;display:grid}.secondaryButton{border:1px solid var(--line);border-radius:8px;justify-content:center;min-height:44px;padding:12px;font-weight:800;display:inline-flex}.detailShell{grid-template-columns:1fr 340px;align-items:start;gap:24px;display:grid}.detailMain{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:clamp(24px,4vw,42px)}.detailGrid{grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px;display:grid}.downloadPanel{padding:24px}.wide{width:100%;margin:18px 0 12px}.loginShell{place-items:center;min-height:600px;display:grid}.loginCard{width:100%;max-width:460px;padding:28px}.teacherPage{min-height:100vh}.teacherHeader{position:static}.teacherLoginShell{grid-template-columns:minmax(0,1fr) 420px;align-items:center;gap:28px;max-width:1080px;min-height:calc(100vh - 73px);margin:0 auto;padding:clamp(28px,5vw,72px) clamp(18px,4vw,56px);display:grid}.teacherLoginIntro{max-width:620px}.teacherLoginIntro p{color:var(--muted);font-size:18px;line-height:1.8}.teacherLoginBadges{flex-wrap:wrap;gap:10px;margin-top:24px;display:flex}.teacherLoginBadges span{background:var(--surface);border:1px solid var(--line);color:var(--blue-dark);border-radius:8px;padding:10px 14px;font-weight:800}.teacherLoginCard{box-shadow:0 18px 55px #1720331a}.teacherLoginCard h2{margin-bottom:8px}.adminHeader{color:#fff;background:#111827}.adminHeader .brand small{color:#cbd5e1}.adminTopNav a{color:#f8fafc;border-color:#ffffff47}.adminTopNav a:last-child{color:#111827;background:#f8fafc}.adminShell{grid-template-columns:180px minmax(0,1fr);align-items:start;gap:18px;width:100%;max-width:none;margin:0;padding:28px clamp(16px,3vw,36px);display:grid}.adminSide{background:var(--surface);border:1px solid var(--line);border-radius:8px;gap:6px;padding:12px;display:grid;position:sticky;top:88px}.adminSide a{color:var(--muted);border-radius:8px;padding:12px;font-weight:800}.adminSide .active,.adminSide a:hover{background:var(--surface-soft);color:var(--blue)}.adminMain{gap:24px;min-width:0;display:grid}.overviewSection{min-width:0}.overviewHeader{grid-template-columns:minmax(220px,.45fr) minmax(420px,1fr);align-items:end;gap:18px;display:grid}.overviewHeader .sectionTitle{margin-bottom:0}.statGrid{grid-template-columns:repeat(4,minmax(112px,1fr));gap:10px;display:grid}.statGrid div{padding:14px 16px}.statGrid strong{margin-top:12px;font-size:24px;line-height:1.1}.adminPanel{padding:22px}.adminNotice{color:var(--muted);background:#eef6ff;border:1px solid #cfe3ff;border-radius:8px;margin-bottom:16px;padding:10px 12px;font-weight:700}.uploadForm{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.uploadForm label{color:var(--text);gap:8px;font-weight:800;display:grid}.uploadForm .wideField{grid-column:1/-1}.checkRow{align-items:center;gap:10px!important;display:flex!important}.checkRow input{width:18px;min-height:auto}.filePreview{background:var(--surface-soft);border:1px solid var(--line);color:var(--muted);border-radius:8px;align-items:center;padding:0 12px;display:flex}.panelHead{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.tableLike{border:1px solid var(--line);border-radius:8px;max-width:100%;overflow:hidden}.tableRow{border-bottom:1px solid var(--line);grid-template-columns:1.5fr .7fr .5fr .5fr 220px;align-items:center;gap:12px;padding:14px;display:grid}.adminResourceTable .tableRow{grid-template-columns:minmax(180px,1.3fr) minmax(110px,.8fr) minmax(90px,.7fr) minmax(52px,.45fr) minmax(68px,.55fr) minmax(180px,.9fr)}.tableRow:last-child{border-bottom:0}.tableRow div{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.tableRow button{color:var(--text);white-space:nowrap;background:#eef2f7;border:0;border-radius:6px;padding:8px 10px;font-weight:800}.tableRow .danger{color:var(--red)}.adminColumns{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px;display:grid}.categoryList{gap:8px;display:grid}.categoryList p{color:var(--muted);margin-bottom:10px;line-height:1.7}.inlineCreateForm,.teacherCreateForm{gap:10px;margin-bottom:16px;display:grid}.inlineCreateForm{grid-template-columns:1fr 110px}.teacherCreateForm{grid-template-columns:repeat(3,minmax(0,1fr)) 110px}.manageList{border:1px solid var(--line);border-radius:8px;display:grid;overflow:hidden}.manageRow,.teacherRow{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:12px;display:grid}.manageRow{grid-template-columns:1fr 70px 70px}.teacherRow{grid-template-columns:1fr 92px}.manageRow:last-child,.teacherRow:last-child{border-bottom:0}.teacherRow strong,.teacherRow span{display:block}.teacherRow span{color:var(--muted);margin-top:3px;font-size:13px}.teacherTable{border:1px solid var(--line);border-radius:8px;overflow:hidden}.teacherTableHead,.teacherTableRow{grid-template-columns:minmax(110px,1fr) minmax(110px,1fr) minmax(90px,.8fr) 92px;align-items:center;gap:12px;padding:12px;display:grid}.teacherTableHead{background:var(--surface-soft);color:var(--muted);font-size:13px;font-weight:800}.teacherTableRow{border-top:1px solid var(--line)}.teacherTableRow button{color:var(--red);background:#eef2f7;border:0;border-radius:6px;min-height:40px;padding:8px 10px;font-weight:800}.manageRow button,.teacherRow button,.inlineCreateForm button,.teacherCreateForm button{color:var(--text);background:#eef2f7;border:0;border-radius:6px;min-height:40px;padding:8px 10px;font-weight:800}button:disabled{cursor:wait;opacity:.62}.manageRow .danger,.teacherRow .danger{color:var(--red)}@media (max-width:1180px){.adminShell{grid-template-columns:1fr}.adminSide{flex-wrap:wrap;display:flex;position:static}.adminSide a{text-align:center;flex:130px}.adminResourceTable .tableRow{grid-template-columns:1fr}.tableRow div{justify-content:flex-start}}@media (max-width:920px){.overviewHeader{grid-template-columns:1fr;align-items:start}.resourceHero,.splitSection,.resourceLayout,.directoryLayout .filterPanel form,.detailShell,.adminShell,.adminColumns{grid-template-columns:1fr}.quickGrid,.statGrid{grid-template-columns:1fr 1fr}.filterPanel,.adminSide{position:static}}@media (max-width:640px){.siteHeader,.topNav,.horizontal,.panelHead{flex-direction:column;align-items:stretch}.siteHeader{gap:14px}.topNav{width:100%;display:grid}.topNav:not(.singleNav){grid-template-columns:1fr 1fr}.singleNav{grid-template-columns:1fr}.topNav a{text-align:center}.searchPanel,.quickGrid,.courseGrid,.uploadForm,.inlineCreateForm,.teacherCreateForm,.manageRow,.teacherRow,.teacherLoginShell,.teacherTableHead,.teacherTableRow,.statGrid,.detailGrid,.tableRow,.adminResourceTable .tableRow,.cardActions{grid-template-columns:1fr}}.siteHeader{min-height:76px}.brand strong{letter-spacing:0;font-size:18px}.brandIcon{box-shadow:0 10px 24px #1d5fd138}.homeShell{gap:24px;max-width:1180px;padding-top:44px}.homeIntro h1{margin-bottom:0;font-size:clamp(34px,4.4vw,48px)}.homeSearch{margin-top:22px}.homeCoursePanel{background:linear-gradient(#ffffffeb,#fff),radial-gradient(circle at 10% 0,#1d5fd114,#0000 32%);border-radius:14px;gap:32px;padding:clamp(20px,3vw,34px)}.homeCourseGroup .sectionTitle{border-bottom:0;align-items:center;gap:12px;padding-bottom:0;display:flex}.homeCourseGroup .sectionTitle:before{background:var(--blue);content:"";border-radius:999px;width:5px;height:28px}.homeCourseGroup:nth-child(2) .sectionTitle:before{background:var(--green)}.homeCourseGroup h2{color:#0f1f3d;font-size:26px}.quickGrid,.courseGrid{gap:18px}.quickGrid a.courseEntry,.courseGrid a.courseEntry{background:linear-gradient(135deg,#fff 0% 58%,#eef5ff 100%);border:1px solid #bfd3f4;border-radius:10px;grid-template-columns:58px 1fr;align-items:center;gap:4px 16px;min-height:138px;padding:24px 22px;transition:border-color .16s,box-shadow .16s,transform .16s;display:grid;position:relative;box-shadow:0 14px 34px #1d5fd114}.courseGrid a.extensionEntry{background:linear-gradient(135deg,#fff 0% 58%,#eaf8f1 100%);border-color:#b9dece;box-shadow:0 14px 34px #12805c14}.quickGrid a.courseEntry:hover,.courseGrid a.courseEntry:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:0 18px 38px #1d5fd124}.courseGrid a.extensionEntry:hover{border-color:var(--green);box-shadow:0 18px 38px #12805c24}.courseBadge{background:var(--blue);text-align:center;border-radius:14px;grid-row:1/span 3;justify-content:center;place-items:center;width:58px;height:58px;font-size:24px;font-weight:800;line-height:1;color:#fff!important;display:grid!important}.extensionEntry .courseBadge{background:var(--green)}.courseEntry strong{color:#102044;margin:0;font-size:24px;line-height:1.25}.courseEntry span:not(.courseBadge){color:var(--muted);font-size:14px;line-height:1.5}.courseEntry small{color:var(--blue);white-space:nowrap;grid-area:auto/2;font-size:13px;font-weight:800}.extensionEntry small{color:var(--green)}.pageIntro{padding-top:46px;padding-bottom:22px}.pageIntro h1{font-size:clamp(34px,4vw,48px)}.directoryLayout,.resourceLayout,.detailShell{max-width:1180px}.filterPanel,.resourceCard,.detailMain,.downloadPanel,.loginCard,.adminPanel,.adminSide{border-radius:10px}.resourceCard.horizontal{border-left:5px solid var(--blue)}.resourceCard h2{font-size:24px}.resourceCard small{color:var(--muted)}.cardMeta span{padding:7px 10px}.detailMain h1{font-size:clamp(34px,4vw,52px)}.teacherLoginShell{max-width:1120px;min-height:calc(100vh - 76px)}.teacherLoginIntro h1{font-size:clamp(34px,4.4vw,54px)}.teacherLoginCard{border-top:5px solid var(--blue)}.adminShell{grid-template-columns:168px minmax(0,1fr);gap:22px;padding-left:clamp(20px,2.4vw,32px);padding-right:clamp(20px,2.4vw,32px)}.adminSide{top:96px}.adminMain{gap:22px}.overviewHeader{background:var(--surface);border:1px solid var(--line);border-radius:10px;grid-template-columns:minmax(220px,.32fr) minmax(0,1fr);align-items:stretch;padding:20px;box-shadow:0 12px 30px #1720330d}.overviewHeader .sectionTitle{align-self:center}.overviewHeader h1{margin-bottom:0;font-size:clamp(34px,3.6vw,48px)}.statGrid div{background:#f1f6ff}.statGrid strong{font-size:22px}.adminPanel{box-shadow:0 12px 30px #1720330d}.adminResourceTable .tableRow div{border-top:1px solid var(--line);grid-column:1/-1;justify-content:flex-start;padding-top:12px}.adminResourceTable .tableRow button{min-width:84px}.adminColumns{grid-template-columns:1fr}.adminColumns .adminPanel{max-width:none}@media (max-width:920px){.overviewHeader,.quickGrid,.courseGrid{grid-template-columns:1fr}}@media (max-width:640px){.homeShell{padding-top:30px}.quickGrid a.courseEntry,.courseGrid a.courseEntry{grid-template-columns:52px 1fr;min-height:120px}.courseBadge{width:52px;height:52px}.courseEntry small{grid-area:auto/2}}
