/* Learning Studio: shared layout, surfaces and accessible controls. */
:root{--studio-surface:var(--bg-secondary);--studio-soft:var(--bg-card);--studio-ink:var(--text-primary);--studio-muted:var(--text-secondary);--studio-line:var(--border-color);--studio-accent:#FFD23F;--studio-accent-ink:#0a0f14;--studio-canvas:var(--bg-primary);--studio-shadow:0 6px 28px #0002}
[data-theme="light"]{--studio-shadow:0 6px 28px #00000008}
body{background:var(--studio-canvas);letter-spacing:-.012em}
button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--accent)!important;outline-offset:4px}
.card,.card:hover{border:1px solid var(--studio-line);box-shadow:var(--studio-shadow);transform:none;border-radius:18px}
[data-theme="light"] .card,[data-theme="light"] .card:hover{box-shadow:var(--studio-shadow)}
#main-app>header{height:76px;border-bottom:1px solid var(--studio-line);background:var(--studio-surface);padding:0 28px;gap:24px;box-shadow:none}
#main-app>header nav{justify-content:flex-end;gap:24px;margin-right:22px}
#main-app>header nav a{font-size:12px;color:var(--studio-muted)}
#main-app>header>div:last-child{gap:8px}
#main-app>header button{min-width:42px;min-height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px}
.studio-brand{display:flex;align-items:center;gap:11px;color:var(--studio-ink)!important;font-size:21px;font-weight:700;letter-spacing:-.8px;line-height:1.05;text-decoration:none}
.studio-brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--studio-muted);margin-top:6px;font-weight:600}
.studio-brand-logo{width:44px;height:48px;object-fit:contain;flex-shrink:0}
#user-name{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}
#sidebar{top:76px;width:268px;background:var(--studio-surface);border-right:1px solid var(--studio-line)}
#course-nav{padding:22px 16px 40px}
#course-nav>button:first-child{background:var(--studio-soft);color:var(--studio-ink);border:1px solid var(--studio-line);font-size:14px;min-height:46px;margin-bottom:14px}
#course-nav>div.border-t{margin-top:18px;padding-top:0;border-color:var(--studio-line)}
#course-nav input{min-height:42px;font-size:12px;border-radius:10px;background:var(--studio-soft)!important}
#course-nav .filter-btn{font-size:10px;min-height:32px;padding:5px 9px}
#course-nav .lesson-item{font-size:12px;line-height:1.5;min-height:40px;border-radius:9px}
#course-nav .bookmark-btn{opacity:1;min-width:32px;min-height:40px;margin:0;display:grid;place-items:center}
#course-nav .bookmark-btn svg{width:15px;height:15px}
#course-nav p.uppercase{font-size:10px;letter-spacing:1.2px;color:var(--studio-muted);font-weight:600}
#main-app>main{padding:116px 36px 64px;margin-left:268px}
#content{max-width:1260px}
.studio-page-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:30px}
.studio-eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;color:var(--studio-muted);margin:0 0 12px;line-height:1.5}
.studio-page-heading h2{font-size:clamp(26px,2.55vw,38px);font-weight:600;letter-spacing:-1.5px;line-height:1.22;color:var(--studio-ink);margin-bottom:10px}
.studio-page-heading>div>p:last-child{font-size:13px;color:var(--studio-muted);line-height:1.7}
.studio-package{padding:8px 12px;border:1px solid var(--studio-line);border-radius:8px;background:var(--studio-surface);font-size:10px;white-space:nowrap;color:var(--studio-muted)}
.studio-grid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(250px,1fr);gap:26px;align-items:start}
.studio-main-column,.studio-side-column{min-width:0;display:grid;gap:22px}
.studio-continue{padding:32px;background:var(--studio-surface);border:1px solid var(--studio-line);border-radius:20px;position:relative;overflow:hidden;color:var(--studio-ink)}
.studio-continue .studio-eyebrow{color:var(--accent);margin-bottom:22px}
.studio-lesson-meta{font-size:11px;color:var(--studio-muted);line-height:1.6;max-width:440px}
.studio-continue h3{font-size:clamp(24px,2.1vw,33px);line-height:1.24;font-weight:600;letter-spacing:-1px;margin:12px 0;max-width:560px}
.studio-continue>p:last-of-type{font-size:13px;line-height:1.8;color:var(--studio-muted);max-width:410px}
.studio-primary{display:inline-flex;align-items:center;justify-content:center;gap:10px;margin-top:24px;min-height:46px;padding:12px 19px;border-radius:10px;background:linear-gradient(135deg,#FFD23F,#FFA500);color:#0a0f14;font-size:13px;font-weight:600;transition:background .2s}
.studio-primary:hover{background:#FFA500}.studio-primary svg{width:16px;height:16px}
.studio-lesson-steps{display:flex;gap:20px;border-top:1px solid var(--studio-line);margin-top:28px;padding-top:16px;color:var(--studio-muted);font-size:10px;font-weight:500}
.studio-today>section{margin:0!important;background:var(--studio-surface);padding:24px!important;border-color:var(--studio-line)!important}
.studio-today #today-card-title{font-size:18px;line-height:1.4}
.studio-today [class*="bg-[#0B1119]"]{background:var(--studio-soft)!important;border-color:var(--studio-line);padding:18px;margin-top:16px}
.studio-today h3{font-size:16px}.studio-today p{line-height:1.7}
.studio-progress-card,.studio-toolbox,.studio-course-path{border:1px solid var(--studio-line);border-radius:18px;background:var(--studio-surface);padding:25px;box-shadow:var(--studio-shadow)}
.studio-progress-card h3,.studio-toolbox h3,.studio-section-heading h3{font-size:18px;letter-spacing:-.5px;font-weight:600;color:var(--studio-ink)}
.studio-progress-card .studio-eyebrow{font-size:9px;letter-spacing:1.2px;margin-bottom:9px}
.studio-progress-number{font-size:52px;line-height:1;font-weight:500;letter-spacing:-3px;margin:25px 0 20px;color:var(--studio-ink)}
.studio-progress-number>span{font-size:23px;letter-spacing:-1px;margin-left:2px;color:var(--studio-muted)}
.studio-meter{height:7px;background:var(--studio-soft);border-radius:8px;overflow:hidden}
.studio-meter>span{display:block;height:100%;background:var(--studio-accent);border-radius:8px}
.studio-progress-card>p:last-of-type{font-size:11px;color:var(--studio-muted);margin:10px 0 22px}
.studio-metrics{display:flex;gap:14px;padding-top:18px;border-top:1px solid var(--studio-line)}
.studio-metrics>div{flex:1}.studio-metrics strong{display:block;color:var(--studio-ink);font-size:20px;font-weight:600}.studio-metrics span{display:block;font-size:9px;line-height:1.5;color:var(--studio-muted);margin-top:5px}
.studio-toolbox>button{display:flex;align-items:center;gap:12px;text-align:left;width:100%;padding:17px 0;border-top:1px solid var(--studio-line);color:var(--studio-ink);font-size:12px}
.studio-toolbox>button:first-of-type{margin-top:18px}.studio-toolbox>button:last-child{padding-bottom:0}
.studio-toolbox>button>svg{width:18px;height:18px;color:var(--studio-muted);flex-shrink:0}.studio-toolbox>button>span:first-of-type{flex:1;min-width:0}.studio-toolbox strong{font-size:12px;font-weight:600}.studio-toolbox small{display:block;font-size:10px;line-height:1.6;color:var(--studio-muted);margin-top:4px}
.studio-toolbox>button:hover strong{color:var(--accent)}
.studio-pending:empty{display:none}.studio-pending .card{margin:0;padding:21px!important}.studio-pending h3{font-size:15px}.studio-pending button{font-size:12px;line-height:1.6}
.studio-section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:20px}.studio-section-heading .studio-eyebrow{font-size:9px;letter-spacing:1.1px;margin-bottom:8px}.studio-section-heading>span{font-size:10px;color:var(--studio-muted);white-space:nowrap}
.studio-level-row{display:flex;align-items:center;gap:17px;padding:18px 0;width:100%;text-align:left;border-top:1px solid var(--studio-line);color:var(--studio-ink)}
.studio-level-number{display:grid;place-items:center;min-width:38px;height:40px;background:var(--studio-soft);border-radius:9px;font-size:14px;color:var(--studio-muted)}
.studio-level-copy{flex:1;min-width:0}.studio-level-copy strong{display:block;font-size:13px;font-weight:600;line-height:1.5}.studio-level-copy>span{font-size:10px;color:var(--studio-muted);display:block;margin-top:4px}.studio-level-status{color:var(--studio-muted);font-size:17px}.studio-level-status svg{width:18px;height:18px}.studio-level-row:hover .studio-level-copy strong{text-decoration:underline;text-underline-offset:4px}
.studio-more{margin-top:24px;border:1px solid var(--studio-line);border-radius:16px;background:var(--studio-surface)}.studio-more>summary{padding:21px 24px;cursor:pointer;font-size:13px;font-weight:600;color:var(--studio-ink);list-style:none}.studio-more>summary>span{float:right}.studio-more-content{padding:0 24px 24px}.studio-more .card{box-shadow:none}
.studio-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:28px;padding-top:22px;border-top:1px solid var(--studio-line);font-size:10px;color:var(--studio-muted)}.studio-footer button,.studio-footer a{min-height:36px;text-decoration:underline;text-underline-offset:3px}
.studio-lesson{max-width:1040px;margin:auto}.studio-lesson-heading{padding:0 0 27px}.studio-back{font-size:11px;color:var(--studio-muted);min-height:36px;margin-bottom:20px}.studio-lesson-heading .studio-eyebrow{font-size:10px;letter-spacing:1.1px}.studio-lesson-heading h2{font-size:clamp(24px,2.6vw,36px);font-weight:600;line-height:1.28;letter-spacing:-1px;max-width:900px;color:var(--studio-ink)}.studio-lesson-id{color:var(--studio-muted);font-weight:400}.studio-lesson-intro{color:var(--studio-muted);font-size:12px;line-height:1.8;margin-top:13px}
.lesson-sections{background:var(--studio-surface);border:1px solid var(--studio-line);border-radius:13px;padding:7px;gap:3px;box-shadow:var(--studio-shadow);position:sticky;top:88px;z-index:10;scroll-padding:10px}
.lesson-sections .tab{padding:11px 12px;min-height:43px;font-size:12px!important;border:0!important;border-radius:8px;gap:7px;color:var(--studio-muted)}.lesson-sections .tab svg{width:14px;height:14px}.lesson-sections .tab.active{background:var(--studio-soft)!important;color:var(--studio-ink)!important;font-weight:600}.tab-badge{font-size:8px!important;line-height:1.3;background:#FFD23F!important;color:#0a0f14!important}.lesson-tab>.card,.learning-guide{padding:28px!important}.learning-guide h3{font-size:20px!important;color:var(--studio-ink)!important;letter-spacing:-.4px}.lesson-tab .prose-content{line-height:1.9;font-size:15px;max-width:780px}.lesson-tab .prose-content p{margin-bottom:18px}.lesson-tab .quiz-question{border-radius:14px}.lesson-tab textarea{line-height:1.8;min-height:130px;border-radius:12px;padding:16px}
[data-theme="light"] [class*="text-[#FFD23F]"]{color:#966000!important}
[data-theme="light"] [class*="text-gray-300"],[data-theme="light"] [class*="text-gray-200"],[data-theme="light"] [class*="text-white"]{color:var(--studio-ink)!important}
[data-theme="light"] [class*="text-gray-400"],[data-theme="light"] [class*="text-gray-500"],[data-theme="light"] [class*="text-gray-600"]{color:var(--studio-muted)!important}
[data-theme="light"] [class*="border-white/"]{border-color:var(--studio-line)!important}
[data-theme="light"] .text-gradient,[data-theme="light"] .welcome-text{background:none;-webkit-text-fill-color:var(--studio-ink);color:var(--studio-ink)}
[data-theme="light"] #notatnik-chat-window,[data-theme="light"] #vc-panel{background:var(--studio-surface)!important;color:var(--studio-ink)!important;border:1px solid var(--studio-line)!important;box-shadow:0 18px 60px #00000028!important}
[data-theme="light"] .notatnik-message-bot,[data-theme="light"] .vc-message.assistant{background:var(--studio-soft)!important;color:var(--studio-ink)!important}
[data-theme="light"] #vc-text-input,[data-theme="light"] #notatnik-chat-input{background:var(--studio-soft)!important;color:var(--studio-ink)!important;border-color:var(--studio-line)!important}
@media(min-width:1600px){#main-app>main{padding-left:60px;padding-right:60px}.studio-grid{gap:30px}}
@media(max-width:1199px){#main-app>header nav{gap:15px;margin-right:0}#main-app>main{padding:108px 24px 48px}.studio-grid{grid-template-columns:minmax(0,1fr) minmax(230px,.75fr);gap:18px}.studio-continue{padding:25px}.studio-progress-card,.studio-toolbox,.studio-course-path{padding:20px}.studio-page-heading{align-items:start}.studio-package{display:none}.studio-lesson-steps{gap:12px;font-size:9px}#user-name{display:none}}
@media(max-width:1023px){#main-app>main{margin-left:0;padding:100px 24px 100px}#main-app>header{height:72px;padding:0 16px;gap:12px}#sidebar{top:72px;width:292px;box-shadow:20px 0 60px #0001}#main-app>header nav{display:none}.studio-page-heading h2{font-size:30px}.studio-grid{grid-template-columns:minmax(0,1.6fr) minmax(230px,1fr)}.lesson-sections{top:80px}.studio-brand{font-size:20px}}
@media(max-width:699px){#main-app>main{padding:96px 18px 108px}.studio-grid{display:flex;flex-direction:column;gap:20px}.studio-main-column,.studio-side-column{width:100%;gap:18px}.studio-page-heading{margin-bottom:24px}.studio-page-heading h2{font-size:28px;letter-spacing:-1.1px;max-width:330px}.studio-page-heading>div>p:last-child{font-size:12px}.studio-page-heading .studio-eyebrow{font-size:9px;letter-spacing:1.5px}.studio-continue{padding:25px 23px;border-radius:18px}.studio-continue h3{font-size:26px}.studio-lesson-steps{gap:16px;font-size:9px;flex-wrap:wrap}.studio-primary{min-height:48px}.studio-today>section{padding:22px!important}.studio-progress-number{font-size:44px;margin:18px 0}.studio-metrics strong{font-size:22px}.studio-metrics span{font-size:10px}.studio-section-heading .studio-eyebrow{font-size:8px}.studio-footer{font-size:10px;justify-content:flex-start}.studio-brand small{font-size:8px;letter-spacing:1.5px}.studio-brand-logo{width:32px;height:37px}.studio-brand{gap:8px;font-size:18px}#main-app>header>div:first-child{gap:8px}#main-app>header>div:last-child{gap:0}#main-app>header button{min-width:36px;min-height:42px}#main-app>header{padding:0 10px}.studio-lesson-heading h2{font-size:27px}.studio-lesson-heading .studio-eyebrow{line-height:1.8}.studio-lesson-intro{font-size:12px}.lesson-tab>.card,.learning-guide{padding:22px!important}.lesson-tab .prose-content{font-size:14px;line-height:1.85}.lesson-sections .tab{padding:10px 12px;min-height:42px}.studio-more>summary{padding:20px;font-size:12px}.studio-more-content{padding:0 16px 20px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
/* Nested tracks must shrink even when a quiz title or tool name is long. */
.studio-main-column,.studio-side-column{grid-template-columns:minmax(0,1fr)}
.studio-main-column>*,.studio-side-column>*{min-width:0;max-width:100%}
.studio-pending button,.studio-pending p{white-space:normal;overflow-wrap:anywhere}
#course-nav button{background-color:transparent}
#course-nav button:hover{background-color:var(--studio-soft)}
#course-nav>button:first-child{background:var(--studio-soft)}
[data-theme="light"] #course-nav [class*="text-[#FFD23F]"]{color:var(--studio-ink)!important}
@media(min-width:1024px){#main-app>header button[aria-controls="sidebar"]{display:none}}
[data-theme="light"] .notatnik-message.assistant,[data-theme="light"] .vc-msg.ai{background:var(--studio-soft)!important;color:var(--studio-ink)!important}
[data-theme="light"] #notatnik-chat-header,[data-theme="light"] #vc-header,[data-theme="light"] #notatnik-chat-input-area{background:var(--studio-surface)!important;border-color:var(--studio-line)!important}
[data-theme="light"] #notatnik-chat-header h3,[data-theme="light"] #vc-header .vc-title,[data-theme="light"] .notatnik-message a{color:#966000!important}
[data-theme="light"] #notatnik-history-panel{background:var(--studio-surface)!important;color:var(--studio-ink)!important}
[data-theme="light"] .notatnik-history-item{background:var(--studio-soft)!important}
[data-theme="light"] .notatnik-history-item-title{color:var(--studio-ink)!important}
[data-theme="light"] .notatnik-history-item-meta,[data-theme="light"] .notatnik-history-empty{color:var(--studio-muted)!important}
[data-theme="light"] .notatnik-message pre{background:var(--studio-soft)!important;color:var(--studio-ink)!important}
#course-nav button{background-color:transparent!important}
#course-nav button:hover,#course-nav>button:first-child,#course-nav .lesson-item.active{background-color:var(--studio-soft)!important}
.lesson-tab .prose-content{font-size:16px;line-height:1.85}
@media(max-width:699px){.lesson-tab .prose-content{font-size:16px}#main-app>header button{min-width:40px;min-height:44px}.studio-toolbox small,.studio-level-copy>span{font-size:11px}}
[data-theme="light"] .btn-primary{background:linear-gradient(135deg,#FFD23F,#FFA500)!important;color:#0a0f14!important;border-radius:10px}
[data-theme="light"] .btn-primary:hover{background:#FFA500!important}
[data-theme="light"] #notatnik-chat-input-wrapper{background:var(--studio-surface)!important;border-color:var(--studio-line)!important}
[data-theme="light"] #vc-header h3{color:#966000!important}
#notatnik-chat-window{overflow:hidden}

.studio-brand small{color:var(--accent)}
.studio-continue{box-shadow:inset 0 3px 0 #FFD23F}
.brand-login-logo{width:82px;height:86px;object-fit:contain;margin:0 auto 18px}