/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-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;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{.visible{visibility:visible}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.hidden{display:none}.grow{flex-grow:1}}:root,:root[data-theme=teal]{--bg:#eef4f2;--surface:#fff;--surface-2:#f5f8f7;--ink:#15312f;--muted:#667b78;--line:#d9e4e1;--accent:#e56f3f;--accent-contrast:#fff;--nav:#123c3a;--nav-soft:#1d4d4a;--nav-text:#e6f1ef;--success:#16846f;--shadow:#14312f29}:root[data-theme=light]{--bg:#f5f3ef;--surface:#fff;--surface-2:#faf9f7;--ink:#282723;--muted:#716f69;--line:#e4e0d8;--nav:#ece8df;--nav-soft:#e1dcd1;--nav-text:#302f2b;--success:#287a62;--shadow:#2827231f}:root[data-theme=blue]{--bg:#eef3fa;--surface:#fff;--surface-2:#f5f8fc;--ink:#172d48;--muted:#667992;--line:#d8e2ef;--nav:#17375d;--nav-soft:#244873;--nav-text:#e9f1fb;--success:#23806c;--shadow:#17375d26}:root[data-theme=dark]{--bg:#101917;--surface:#172421;--surface-2:#1c2b28;--ink:#eef5f3;--muted:#a5b8b4;--line:#30433f;--nav:#0a1211;--nav-soft:#152421;--nav-text:#e8f1ef;--success:#42b99d;--shadow:#00000052}*{box-sizing:border-box}html{min-width:320px;min-height:100%}body{background:var(--bg);min-height:100%;color:var(--ink);margin:0;font-family:Arial,Helvetica,sans-serif}button,textarea,select,input{font:inherit}button{color:inherit}:is(button:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible){outline:3px solid var(--accent)}@supports (color:color-mix(in lab, red, red)){:is(button:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible){outline:3px solid color-mix(in srgb, var(--accent) 35%, transparent)}}:is(button:focus-visible,textarea:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible){outline-offset:2px}.course-shell{background:radial-gradient(circle at 86% 0%, var(--accent), transparent 28rem), var(--bg);min-height:100vh}@supports (color:color-mix(in lab, red, red)){.course-shell{background:radial-gradient(circle at 86% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 28rem), var(--bg)}}.topbar{z-index:20;border-bottom:1px solid var(--line);background:var(--surface);align-items:center;gap:15px;height:88px;padding:0 32px;display:flex;position:sticky;top:0}@supports (color:color-mix(in lab, red, red)){.topbar{background:color-mix(in srgb, var(--surface) 94%, transparent)}}.topbar{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand-mark{background:var(--nav);width:46px;height:46px;color:var(--nav-text);letter-spacing:-.04em;border-radius:14px;flex:none;place-items:center;font-weight:900;display:grid;box-shadow:inset 0 0 0 1px #ffffff14}.brand-copy h1,.lesson-heading h2,.card-heading h3,.backup-card h3,.video-placeholder h3{margin:0}.brand-copy h1{letter-spacing:-.02em;font-size:1.12rem}.bimserver-link{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:11px;align-items:center;gap:8px;margin-left:10px;padding:8px 11px 8px 8px;font-size:.76rem;font-weight:900;text-decoration:none;transition:border-color .16s,color .16s,transform .16s;display:inline-flex}.bimserver-link img{border-radius:6px;width:24px;height:24px}.bimserver-link:hover{border-color:var(--accent)}@supports (color:color-mix(in lab, red, red)){.bimserver-link:hover{border-color:color-mix(in srgb, var(--accent) 55%, var(--line))}}.bimserver-link:hover{color:var(--accent);transform:translateY(-1px)}.eyebrow{color:var(--muted);letter-spacing:.13em;text-transform:uppercase;margin:0 0 5px;font-size:.69rem;font-weight:900}.header-progress{width:170px;color:var(--muted);margin-left:auto;font-size:.74rem;font-weight:800}.header-progress-track{background:var(--line);border-radius:99px;height:5px;margin-top:7px;overflow:hidden}.header-progress-track i{border-radius:inherit;background:var(--accent);height:100%;transition:width .25s;display:block}.theme-menu{position:relative}.theme-menu summary{border:1px solid var(--line);background:var(--surface);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:11px;padding:10px 14px;font-size:.79rem;font-weight:800;list-style:none}.theme-menu summary::-webkit-details-marker{display:none}.theme-menu summary:before{content:"◐";color:var(--accent);margin-right:7px}.theme-panel{border:1px solid var(--line);background:var(--surface);width:240px;box-shadow:0 18px 46px var(--shadow);border-radius:15px;padding:16px;position:absolute;top:calc(100% + 10px);right:0}.theme-panel label{color:var(--muted);grid-template-columns:1fr auto;align-items:center;gap:10px;margin-bottom:12px;font-size:.78rem;font-weight:800;display:grid}.theme-panel select{border:1px solid var(--line);background:var(--surface-2);width:100%;color:var(--ink);border-radius:8px;grid-column:1/-1;padding:9px 10px}.theme-panel input[type=color]{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:8px;width:44px;height:32px;padding:2px}.theme-panel button{border:1px solid var(--line);width:100%;color:var(--muted);cursor:pointer;background:0 0;border-radius:8px;padding:9px}.course-layout{grid-template-columns:290px minmax(0,1fr);min-height:calc(100vh - 88px);display:grid}.lesson-sidebar{background:var(--nav);height:calc(100vh - 88px);color:var(--nav-text);flex-direction:column;align-self:start;padding:26px 18px 20px;display:flex;position:sticky;top:88px;overflow-y:auto}.sidebar-head{justify-content:space-between;align-items:center;gap:10px;margin:0 9px 17px;display:flex}.sidebar-label{color:var(--nav-text);margin:0}@supports (color:color-mix(in lab, red, red)){.sidebar-label{color:color-mix(in srgb, var(--nav-text) 66%, transparent)}}.sidebar-label{letter-spacing:.11em;text-transform:uppercase;font-size:.68rem;font-weight:900}.sidebar-head>span{color:var(--nav-text);background:#ffffff14;border-radius:99px;padding:4px 7px}@supports (color:color-mix(in lab, red, red)){.sidebar-head>span{color:color-mix(in srgb, var(--nav-text) 76%, transparent)}}.sidebar-head>span{font-size:.65rem;font-weight:800}.lesson-sidebar nav{gap:5px;display:grid}.lesson-link{width:100%;color:var(--nav-text);background:0 0;border:0;border-radius:12px;grid-template-columns:36px 1fr;align-items:center;gap:10px;padding:12px 10px;display:grid}@supports (color:color-mix(in lab, red, red)){.lesson-link{color:color-mix(in srgb, var(--nav-text) 82%, transparent)}}.lesson-link{text-align:left;cursor:pointer;transition:background .16s,color .16s,transform .16s}.lesson-link:hover{color:var(--nav-text);background:#ffffff12;transform:translate(2px)}.lesson-link.active{background:var(--nav-soft);color:var(--nav-text);box-shadow:inset 3px 0 var(--accent)}.guide-sidebar-link{border:1px solid #ffffff1f;margin-top:10px;text-decoration:none}.guide-sidebar-link:hover{border-color:var(--accent)}@supports (color:color-mix(in lab, red, red)){.guide-sidebar-link:hover{border-color:color-mix(in srgb, var(--accent) 55%, transparent)}}.guide-status{color:var(--accent);font-size:.59rem}.lesson-status{width:30px;height:30px;color:var(--nav-text);border:1px solid #ffffff2b;border-radius:9px;place-items:center;display:grid}@supports (color:color-mix(in lab, red, red)){.lesson-status{color:color-mix(in srgb, var(--nav-text) 65%, transparent)}}.lesson-status{font-size:.7rem;font-weight:900}.lesson-status.done{border-color:var(--success);background:var(--success);color:#fff}.lesson-copy{gap:4px;min-width:0;display:grid}.lesson-copy strong{text-overflow:ellipsis;white-space:nowrap;font-size:.83rem;overflow:hidden}.lesson-copy small{color:var(--nav-text)}@supports (color:color-mix(in lab, red, red)){.lesson-copy small{color:color-mix(in srgb, var(--nav-text) 54%, transparent)}}.lesson-copy small{font-size:.67rem}.sidebar-tip{background:#ffffff0e;border:1px solid #ffffff1a;border-radius:13px;margin-top:auto;padding:15px}.sidebar-tip span{background:var(--accent);border-radius:8px;place-items:center;width:28px;height:28px;display:grid}@supports (color:color-mix(in lab, red, red)){.sidebar-tip span{background:color-mix(in srgb, var(--accent) 78%, transparent)}}.sidebar-tip span{color:#fff}.sidebar-tip p{color:var(--nav-text);margin:10px 0 0}@supports (color:color-mix(in lab, red, red)){.sidebar-tip p{color:color-mix(in srgb, var(--nav-text) 68%, transparent)}}.sidebar-tip p{font-size:.72rem;line-height:1.5}.lesson-main{width:100%;max-width:1320px;margin:0 auto;padding:36px clamp(24px,4.5vw,68px) 64px}.lesson-heading{justify-content:space-between;align-items:flex-start;gap:28px;margin-bottom:22px;display:flex}.lesson-heading h2{letter-spacing:-.035em;max-width:850px;font-size:clamp(1.45rem,2.3vw,2.25rem);line-height:1.13}.lesson-description{max-width:760px;color:var(--muted);margin:10px 0 0;font-size:.92rem;line-height:1.55}.complete-button{border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:11px;flex:none;padding:11px 15px;font-size:.76rem;font-weight:900}.complete-button.is-complete{border-color:var(--success)}@supports (color:color-mix(in lab, red, red)){.complete-button.is-complete{border-color:color-mix(in srgb, var(--success) 40%, var(--line))}}.complete-button.is-complete{background:var(--success)}@supports (color:color-mix(in lab, red, red)){.complete-button.is-complete{background:color-mix(in srgb, var(--success) 11%, var(--surface))}}.complete-button.is-complete{color:var(--success)}.video-frame{border:1px solid var(--nav);position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.video-frame{border:1px solid color-mix(in srgb, var(--nav) 55%, transparent)}}.video-frame{box-shadow:0 24px 60px var(--shadow);background:#061413;border-radius:20px}.video-frame video{aspect-ratio:16/9;background:#061413;width:100%;max-height:68vh;display:block}.resume-hint{color:#dcebea;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);pointer-events:none;background:#030e0db8;border-radius:8px;padding:7px 10px;font-size:.68rem;font-weight:800;position:absolute;top:13px;right:13px}.video-placeholder{border:1px dashed var(--muted);align-content:center;place-items:center;min-height:380px;padding:40px;display:grid}@supports (color:color-mix(in lab, red, red)){.video-placeholder{border:1px dashed color-mix(in srgb, var(--muted) 45%, transparent)}}.video-placeholder{background:linear-gradient(145deg, var(--surface), var(--surface-2));text-align:center;border-radius:20px}.placeholder-icon{background:var(--accent);border-radius:50%;place-items:center;width:62px;height:62px;margin-bottom:20px;display:grid}@supports (color:color-mix(in lab, red, red)){.placeholder-icon{background:color-mix(in srgb, var(--accent) 15%, var(--surface))}}.placeholder-icon{color:var(--accent);font-size:1.25rem}.video-placeholder h3{max-width:560px;font-size:1.4rem}.video-placeholder>p:last-child{max-width:560px;color:var(--muted);margin:10px auto 0;line-height:1.55}.study-grid{grid-template-columns:minmax(240px,.62fr) minmax(0,1.6fr);gap:20px;margin-top:22px;display:grid}.notes-card,.progress-card,.backup-card{border:1px solid var(--line);background:var(--surface);border-radius:17px}.notes-card{grid-area:1/2;min-width:0;padding:22px}.card-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.card-heading h3,.backup-card h3{font-size:1rem}.note-count{background:var(--surface-2);min-width:28px;height:28px;color:var(--muted);border-radius:8px;place-items:center;font-size:.73rem;font-weight:900;display:grid}.note-composer{border:1px solid var(--line);background:var(--surface-2);border-radius:13px;margin-top:18px;overflow:hidden}.note-composer textarea{resize:vertical;width:100%;color:var(--ink);background:0 0;border:0;outline:0;padding:14px;font-size:.86rem;line-height:1.55;display:block}.note-composer textarea::placeholder{color:var(--muted)}@supports (color:color-mix(in lab, red, red)){.note-composer textarea::placeholder{color:color-mix(in srgb, var(--muted) 72%, transparent)}}.composer-actions{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:14px;padding:10px 11px;display:flex}.composer-actions>span{color:var(--muted);font-size:.69rem;font-weight:800}.primary-button{background:var(--accent);color:var(--accent-contrast);cursor:pointer;border:0;border-radius:9px;padding:9px 13px;font-size:.75rem;font-weight:900}.primary-button:disabled{opacity:.48;cursor:not-allowed}.notes-list{gap:10px;margin-top:16px;display:grid}.empty-notes{background:var(--surface-2);color:var(--muted);text-align:center;border-radius:11px;padding:18px;font-size:.79rem}.note-item{border:1px solid var(--line);background:var(--surface);border-radius:12px;grid-template-columns:auto 1fr auto;align-items:start;gap:11px;padding:13px;display:grid}.timestamp{background:var(--accent);border:0;border-radius:7px;padding:5px 7px}@supports (color:color-mix(in lab, red, red)){.timestamp{background:color-mix(in srgb, var(--accent) 13%, var(--surface))}}.timestamp{color:var(--accent);cursor:pointer;font-size:.69rem;font-weight:900}.timestamp:disabled{cursor:default}.note-item p{overflow-wrap:anywhere;min-width:0;margin:4px 0 0;font-size:.82rem;line-height:1.5}.note-actions{gap:4px;display:flex}.note-actions button{color:var(--muted);cursor:pointer;background:0 0;border:0;padding:5px 7px;font-size:.66rem;font-weight:800}.note-actions button:hover{color:var(--accent)}.tools-column{grid-area:1/1;align-content:start;gap:16px;display:grid}.progress-card,.backup-card{padding:20px}.progress-number{letter-spacing:-.06em;margin:6px 0 10px;font-size:2.4rem;font-weight:900}.progress-number small{color:var(--muted);margin-left:3px;font-size:.9rem}.progress-track{background:var(--line);border-radius:99px;height:8px;overflow:hidden}.progress-track span{border-radius:inherit;background:var(--accent);height:100%;transition:width .25s;display:block}.progress-card>p:last-child,.backup-card>p:not(.eyebrow){color:var(--muted);margin:10px 0 0;font-size:.73rem;line-height:1.5}.backup-card h3{margin-top:1px}.backup-actions{gap:7px;margin-top:15px;display:grid}.backup-actions button{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);text-align:left;cursor:pointer;border-radius:9px;padding:9px 10px;font-size:.7rem;font-weight:800}.backup-actions button:hover{border-color:var(--accent)}@supports (color:color-mix(in lab, red, red)){.backup-actions button:hover{border-color:color-mix(in srgb, var(--accent) 45%, var(--line))}}.backup-actions button:hover{color:var(--accent)}.guide-card{border:1px solid var(--line);background:var(--surface);border-radius:17px;padding:20px}.guide-card h3{margin:1px 0 9px;font-size:1rem}.guide-card>p:not(.eyebrow){color:var(--muted);margin:0;font-size:.73rem;line-height:1.5}.guide-list{color:var(--ink);gap:10px;margin:16px 0 0;padding:0 0 0 20px;font-size:.73rem;display:grid}.guide-list li{padding-left:3px}.guide-list strong,.guide-list span{display:block}.guide-list span{color:var(--muted);margin-top:2px;line-height:1.4}.guide-download{background:var(--accent);border-radius:9px;margin-top:17px;padding:10px 11px;display:block}@supports (color:color-mix(in lab, red, red)){.guide-download{background:color-mix(in srgb, var(--accent) 12%, var(--surface))}}.guide-download{color:var(--accent);font-size:.73rem;font-weight:900;text-decoration:none}.guide-download:hover{background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.guide-download:hover{background:color-mix(in srgb, var(--accent) 20%, var(--surface))}}@media (max-width:980px){.course-layout{grid-template-columns:240px minmax(0,1fr)}.study-grid{grid-template-columns:1fr}.notes-card,.tools-column{grid-area:auto/1}.tools-column{grid-template-columns:1fr 1fr}}@media (max-width:740px){.topbar{height:76px;padding:0 16px}.brand-mark{width:40px;height:40px}.brand-copy .eyebrow,.header-progress{display:none}.brand-copy h1{font-size:.95rem}.bimserver-link{margin-left:auto;padding:8px}.bimserver-link span{display:none}.theme-menu{margin-left:auto}.theme-menu summary{padding:9px 10px;font-size:0}.theme-menu summary:before{margin:0;font-size:1rem}.course-layout{display:block}.lesson-sidebar{height:auto;padding:12px;position:static;overflow-x:auto}.sidebar-head,.sidebar-tip{display:none}.lesson-sidebar nav{gap:7px;width:max-content;display:flex}.lesson-link{width:205px;padding:10px}.lesson-main{padding:25px 16px 48px}.lesson-heading{flex-direction:column;align-items:stretch;gap:16px}.complete-button{align-self:flex-start}.video-placeholder{min-height:280px}.tools-column{grid-template-columns:1fr}.note-item{grid-template-columns:auto 1fr}.note-actions{grid-column:2;justify-content:flex-end}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}