@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root{
  --brand:#a47864;
  --brand-dark:#7c5a49;
  --brand-light:#f2e7e1;
  --accent:#c97a2b;
  --accent-text:var(--brand-dark);
  --accent-tint:var(--brand-light);
  --bg:#f3f3f3;
  --card:#ffffff;
  --text:#1f1f1f;
  --muted:#6e7681;
  --border:#e2e2e2;
  --hover:rgba(0,0,0,.045);
  --code-bg:#f6f6f6;
  --danger:#a3271e;
  --danger-bg:#fdecea;
  --ok:#1e6b3a;
  --ok-bg:#e7f6ec;
  --warn-bg:#fff4e0;
  --warn-border:#f0c987;
  --warn-text:#8a5a12;
  --def-bg:#eaf1fb;
  --def-border:#a9c6ec;
  --tip-bg:#eef7ec;
  --tip-border:#a9d6a5;
  --example-bg:#f5f0fa;
  --example-border:#c9b3e6;
  --chip-blue-bg:#e7effa; --chip-blue-text:#2c5f80;
  --chip-purple-bg:#f1eaf9; --chip-purple-text:#6a4c93;
  --chip-orange-bg:#fbeee0;
  --radius-sm:6px;
  --radius:9px;
  --radius-lg:13px;
  --font-display:'Manrope','Segoe UI',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','Cascadia Code','Fira Code',Consolas,monospace;
  --shadow-xs:0 1px 2px rgba(16,24,32,.05);
  --shadow-sm:0 1px 2px rgba(16,24,32,.05);
  --shadow-md:0 6px 16px rgba(16,24,32,.12);
  --shadow-lg:0 12px 32px rgba(16,24,32,.16);
}

/* ---------- Dark theme (VS Code Dark+ inspired) ---------- */
:root[data-theme="dark"]{
  --brand:#a47864;
  --accent-text:color-mix(in srgb, var(--brand) 62%, white);
  --accent-tint:color-mix(in srgb, var(--brand) 16%, var(--card));
  --bg:#1e1e1e;
  --card:#252526;
  --text:#cccccc;
  --muted:#8f8f8f;
  --border:#3c3c3c;
  --hover:rgba(255,255,255,.07);
  --code-bg:#181818;
  --danger:#f14c4c;
  --danger-bg:rgba(241,76,76,.14);
  --ok:#4ec9b0;
  --ok-bg:rgba(78,201,176,.14);
  --warn-bg:rgba(204,167,0,.16);
  --warn-border:rgba(204,167,0,.4);
  --warn-text:#e0b23d;
  --def-bg:rgba(86,156,214,.16);
  --def-border:rgba(86,156,214,.4);
  --tip-bg:rgba(78,201,176,.14);
  --tip-border:rgba(78,201,176,.4);
  --example-bg:rgba(197,134,192,.14);
  --example-border:rgba(197,134,192,.4);
  --chip-blue-bg:rgba(86,156,214,.18); --chip-blue-text:#8ab4e0;
  --chip-purple-bg:rgba(197,134,192,.18); --chip-purple-text:#d9a8d4;
  --chip-orange-bg:rgba(201,122,43,.2);
  --shadow-xs:0 1px 2px rgba(0,0,0,.3);
  --shadow-sm:0 1px 2px rgba(0,0,0,.3);
  --shadow-md:0 6px 16px rgba(0,0,0,.4);
  --shadow-lg:0 14px 36px rgba(0,0,0,.5);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]):not([data-theme="dark"]){
    --accent-text:color-mix(in srgb, var(--brand) 62%, white);
    --accent-tint:color-mix(in srgb, var(--brand) 16%, var(--card));
    --bg:#1e1e1e; --card:#252526; --text:#cccccc; --muted:#8f8f8f; --border:#3c3c3c;
    --hover:rgba(255,255,255,.07); --code-bg:#181818;
    --danger:#f14c4c; --danger-bg:rgba(241,76,76,.14);
    --ok:#4ec9b0; --ok-bg:rgba(78,201,176,.14);
    --warn-bg:rgba(204,167,0,.16); --warn-border:rgba(204,167,0,.4); --warn-text:#e0b23d;
    --def-bg:rgba(86,156,214,.16); --def-border:rgba(86,156,214,.4);
    --tip-bg:rgba(78,201,176,.14); --tip-border:rgba(78,201,176,.4);
    --example-bg:rgba(197,134,192,.14); --example-border:rgba(197,134,192,.4);
    --chip-blue-bg:rgba(86,156,214,.18); --chip-blue-text:#8ab4e0;
    --chip-purple-bg:rgba(197,134,192,.18); --chip-purple-text:#d9a8d4;
    --chip-orange-bg:rgba(201,122,43,.2);
    --shadow-xs:0 1px 2px rgba(0,0,0,.3); --shadow-sm:0 1px 2px rgba(0,0,0,.3);
    --shadow-md:0 6px 16px rgba(0,0,0,.4); --shadow-lg:0 14px 36px rgba(0,0,0,.5);
  }
}

*{box-sizing:border-box}
html,body{overflow-x:hidden;max-width:100%}
body{margin:0;font-family:'Manrope','Segoe UI',system-ui,Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;background:var(--bg);color:var(--text);line-height:1.55;transition:background-color .2s ease,color .2s ease}
h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.015em;line-height:1.2}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit}
code{background:var(--code-bg);border:1px solid var(--border);padding:.1rem .35rem;border-radius:4px;font-size:.85em;font-family:var(--font-mono)}
.boot-loader{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.1rem;color:var(--muted);gap:.5rem;font-family:var(--font-mono)}

/* ---------- Accessibility: focus states ---------- */
a:focus-visible,button:focus-visible,.btn:focus-visible,.icon-btn:focus-visible,
input:focus-visible,select:focus-visible,textarea:focus-visible,
.tab:focus-visible,.toc-lesson:focus-visible,.level-card:focus-visible,
.course-select-card:focus-visible,.lena-tile:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}
input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline-offset:0;
  border-color:var(--brand);
}

/* ---------- Theme toggle button ---------- */
.theme-toggle-btn{position:relative}
.theme-toggle-btn .theme-icon-sun{display:none}
.theme-toggle-btn .theme-icon-moon{display:inline-block}
:root[data-theme="dark"] .theme-toggle-btn .theme-icon-sun{display:inline-block}
:root[data-theme="dark"] .theme-toggle-btn .theme-icon-moon{display:none}

/* ---------- Layout ---------- */
.app-shell{min-height:100vh;display:flex;flex-direction:column}
.header{background:var(--card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:.7rem 1.4rem;position:sticky;top:0;z-index:20;gap:.6rem;transition:background-color .2s ease,border-color .2s ease}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:700;color:var(--brand);font-size:1.15rem;min-width:0;overflow:hidden;font-family:var(--font-display)}
.brand-mark{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;font-size:.9rem;flex-shrink:0;overflow:hidden}
.brand-mark img{width:100%;height:100%;object-fit:contain}
.brand-text{font-family:var(--font-display);font-weight:800;font-size:1.12rem;color:var(--text);letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-sub{display:block;font-weight:600;font-size:.6rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:1px;font-family:var(--font-mono)}
.brand-accent{color:var(--brand)}
.header-actions{display:flex;align-items:center;gap:.3rem;flex-shrink:0}
.icon-btn{background:none;border:1px solid transparent;border-radius:var(--radius-sm);padding:.5rem .65rem;cursor:pointer;color:var(--muted);font-size:1rem;transition:background .15s ease,color .15s ease}
.icon-btn:hover{background:var(--hover);color:var(--text)}
.user-chip{display:flex;align-items:center;gap:.5rem;font-size:.88rem;color:var(--text);font-weight:600}
.kb-header-btn{display:flex;align-items:center;gap:.4rem;font-size:.82rem;font-weight:600}

.body-layout{flex:1;display:flex;min-height:0}
.panel{background:var(--card);border-right:1px solid var(--border);width:280px;flex-shrink:0;overflow-y:auto;transition:margin-left .2s ease,margin-right .2s ease,background-color .2s ease,border-color .2s ease}
.panel.right{border-right:none;border-left:1px solid var(--border)}
.panel.collapsed{margin-left:-280px}
.panel.right.collapsed{margin-left:0;margin-right:-280px}
.main{flex:1;min-width:0;padding:2rem 2.2rem;overflow-y:auto}
.footer{background:var(--brand);border-top:none;text-align:center;padding:.5rem 1rem;font-size:.76rem;color:#fff;font-family:var(--font-mono)}
.powered-by{display:inline-flex;align-items:center;gap:.35rem;background:rgba(255,255,255,.16);color:#fff;font-weight:600;font-size:.7rem;padding:.22rem .65rem .22rem .55rem;border-radius:20px;vertical-align:middle}
.powered-by i{color:#fff;font-size:.66rem}
.powered-by a{color:inherit;text-decoration:none;font-weight:700}
.powered-by a:hover{text-decoration:underline}

.toc h3{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);padding:1.1rem 1.1rem .4rem;font-family:var(--font-mono)}
.toc-module{border-bottom:1px solid var(--border)}
.toc-module>.toc-module-title{padding:.75rem 1.1rem;font-weight:700;font-size:.87rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--text)}
.toc-lesson{padding:.55rem 1.1rem .55rem 2.1rem;font-size:.85rem;cursor:pointer;color:var(--muted);display:flex;align-items:center;gap:.5rem;border-left:2px solid transparent;transition:background .12s ease,color .12s ease}
.toc-lesson:hover{background:var(--hover);color:var(--text)}
.toc-lesson.active{background:var(--accent-tint);color:var(--accent-text);font-weight:700;border-left-color:var(--brand);position:relative}
.toc-lesson.active::after{content:'';position:absolute;right:.9rem;top:50%;transform:translateY(-50%);width:7px;height:7px;border-radius:50%;background:var(--brand)}
.toc-lesson.done i.fa-circle-check{color:var(--brand)}
.toc-lesson.locked{color:var(--muted);opacity:.55;cursor:not-allowed}
.toc-lesson.locked:hover{background:none}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;margin-bottom:1.1rem;box-shadow:var(--shadow-xs);transition:background-color .2s ease,border-color .2s ease}

/* ---------- Slide content blocks ---------- */
.slide h2{color:var(--text);margin-top:0;font-family:var(--font-display);letter-spacing:-.02em;font-weight:800}
.block{border-radius:var(--radius-sm);padding:1rem 1.2rem;margin:1rem 0;line-height:1.6}
.block-content{white-space:pre-line}
.block-text{background:var(--code-bg);border:1px solid var(--border)}
.block-definition{background:var(--def-bg);border:1px solid var(--def-border)}
.block-warning{background:var(--warn-bg);border:1px solid var(--warn-border)}
.block-tip{background:var(--tip-bg);border:1px solid var(--tip-border)}
.block-example{background:var(--example-bg);border:1px solid var(--example-border)}
.block-title{font-weight:700;margin-bottom:.35rem;display:flex;align-items:center;gap:.45rem}

.accordion{border:1px solid var(--border);border-radius:var(--radius-sm);margin:.9rem 0;overflow:hidden}
.accordion-q{padding:.85rem 1.05rem;background:var(--card);cursor:pointer;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:.5rem}
.accordion-a{padding:0 1.05rem;max-height:0;overflow:hidden;transition:max-height .25s ease;background:var(--code-bg)}
.accordion.open .accordion-a{padding:1rem 1.05rem}
.accordion-q i{transition:transform .2s;color:var(--muted)}
.accordion.open .accordion-q i{transform:rotate(180deg)}

.slide-nav{display:flex;justify-content:space-between;margin-top:1.6rem}

/* ---------- Buttons / forms ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--brand);color:#fff;border:none;padding:.62rem 1.15rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s ease,transform .1s ease,box-shadow .15s ease}
.btn:hover{background:var(--brand-dark)}
.btn:active{transform:translateY(1px)}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn.secondary:hover{background:var(--hover);border-color:var(--muted)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn.danger{background:var(--danger)}
.btn.danger:hover{background:var(--danger)}
.btn-sm{padding:.4rem .75rem;font-size:.8rem;text-decoration:none}
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-size:.78rem;font-weight:600;margin-bottom:.35rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.form-group input:not([type="radio"]):not([type="checkbox"]),.form-group select,.form-group textarea{width:100%;padding:.6rem .75rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.94rem;font-family:inherit;box-sizing:border-box;resize:vertical;transition:border-color .15s ease,box-shadow .15s ease;background:var(--code-bg);color:var(--text)}
.form-group input:not([type="radio"]):not([type="checkbox"]):focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--accent-tint);outline:none}
.form-row{display:flex;gap:1rem}
.form-row>.form-group{flex:1}

/* ---------- Quiz (moduł + test końcowy) ---------- */
.quiz-question{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:1rem 1.15rem;margin-bottom:1rem}
.quiz-question>label{display:block;font-size:.96rem;font-weight:700;margin-bottom:.75rem;color:var(--text);text-transform:none;letter-spacing:0}
.quiz-option{display:flex;align-items:flex-start;gap:1.75rem;padding:.85rem 1.1rem;margin:.45rem 0;border-radius:10px;font-weight:400;cursor:pointer;border:1px solid transparent;transition:background .15s ease,border-color .15s ease}
.quiz-option:hover{background:var(--hover,var(--code-bg));border-color:var(--border)}
.quiz-option input[type="radio"]{appearance:none;-webkit-appearance:none;margin:.1rem 0 0;flex:0 0 21px;width:21px;height:21px;border-radius:50%;border:2px solid var(--border);background:var(--card);box-shadow:0 1px 1px rgba(0,0,0,.06);position:relative;cursor:pointer;transition:box-shadow .15s ease,background .15s ease,border-color .15s ease}
.quiz-option input[type="radio"]:hover{border-color:var(--brand)}
.quiz-option input[type="radio"]:checked{border-color:var(--brand);background:var(--brand)}
.quiz-option input[type="radio"]:checked::after{content:'';position:absolute;top:50%;left:50%;width:9px;height:9px;border-radius:50%;background:#fff;transform:translate(-50%,-50%)}
.quiz-option input[type="radio"]:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.quiz-option-text{font-size:.94rem;line-height:1.45;padding-top:.1rem}

.alert{padding:.7rem 1rem;border-radius:var(--radius-sm);margin-bottom:1rem;font-size:.86rem;font-weight:500}
.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger)}
.alert-ok{background:var(--ok-bg);color:var(--ok);border:1px solid var(--ok)}

/* ---------- Landing / auth: split-screen ---------- */
.landing-shell .header{background:transparent;border-bottom:none;position:absolute;width:100%}
.landing-shell .header .icon-btn{color:rgba(255,255,255,.85)}
.landing-shell .header .icon-btn:hover{background:rgba(255,255,255,.14);color:#fff}
.landing-shell .header .brand-text{color:#fff}
.landing-shell .header .brand-sub{color:rgba(255,255,255,.6)}
.landing-split{flex:1;display:grid;grid-template-columns:1.05fr 1fr;min-height:100vh}
.landing-brand-panel{
  position:relative;display:flex;flex-direction:column;justify-content:center;
  padding:6rem 4rem;color:#fff;overflow:hidden;
  background:radial-gradient(120% 140% at 15% 15%, #3a291f 0%, #1e1e1e 65%, #181818 100%);
}
.landing-brand-panel::before{
  content:'';position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(circle at 1px 1px, rgba(164,120,100,.4) 1px, transparent 0);
  background-size:26px 26px;
  mask-image:radial-gradient(ellipse 70% 60% at 30% 30%, black 0%, transparent 70%);
}
.landing-brand-content{position:relative;max-width:440px}
.landing-badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(164,120,100,.22);border:1px solid rgba(164,120,100,.5);color:#dbb8a4;font-weight:600;font-size:.74rem;padding:.35rem .8rem;border-radius:var(--radius-sm);margin-bottom:1.6rem;font-family:var(--font-mono);letter-spacing:.02em}
.landing-brand-content .hero{text-align:left;padding:0}
.landing-brand-content .hero h1{color:#fff;font-size:clamp(2.2rem,3.4vw,3rem);font-weight:800}
.landing-brand-content .hero-slogan{color:rgba(255,255,255,.55);font-family:var(--font-mono);text-transform:none;letter-spacing:.02em}
.landing-brand-content .hero p{color:rgba(255,255,255,.72);font-size:1.05rem;margin-top:.9rem;line-height:1.6}
.landing-points{list-style:none;margin:2.2rem 0 0;padding:0;display:flex;flex-direction:column;gap:.9rem}
.landing-points li{display:flex;align-items:center;gap:.75rem;font-size:.95rem;color:rgba(255,255,255,.9)}
.landing-points li i{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:var(--radius-sm);background:rgba(164,120,100,.24);color:#dbb8a4;flex-shrink:0}
.landing-board-link{display:inline-flex;align-items:center;gap:.5rem;margin-top:2.4rem;color:#fff;font-weight:600;font-size:.9rem;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:2px}

.landing-form-panel{display:flex;align-items:center;justify-content:center;padding:2.5rem 2rem;background:var(--bg)}
.auth-wrap{max-width:420px;margin:0;width:100%}
.auth-wrap.card{border:none;box-shadow:none;padding:0;background:transparent}
.tabs{display:flex;gap:1.6rem;border-bottom:1px solid var(--border);margin-bottom:1.6rem;overflow-x:auto}
.tab{padding:0 0 .85rem;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent;font-weight:600;font-size:.92rem;white-space:nowrap;transition:color .15s ease,border-color .15s ease}
.tab:hover{color:var(--text)}
.tab.active{color:var(--accent-text);border-color:var(--brand)}
.hero{text-align:center;padding:1.5rem 1rem 0}
.hero h1{color:var(--text);font-size:2.2rem;letter-spacing:-.03em;font-family:var(--font-display);font-weight:800}
.hero-slogan{display:block;font-weight:600;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:.4rem}
.hero p{color:var(--muted);margin-top:.6rem}
.hero-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:.6rem;margin-top:1rem}
.hero-tag{display:inline-flex;align-items:center;gap:.4rem;background:var(--accent-tint);color:var(--accent-text);font-weight:600;font-size:.82rem;padding:.4rem .85rem;border-radius:var(--radius-sm)}
.hero-tag i{color:var(--brand);font-size:.8rem}

@media (max-width:900px){
  .landing-split{grid-template-columns:1fr}
  .landing-brand-panel{padding:7.5rem 2rem 3rem;text-align:left}
  .landing-form-panel{padding:2rem 1.3rem 3rem}
}

/* ---------- Progress ---------- */
.progress-bar{background:var(--border);border-radius:20px;height:8px;overflow:hidden}
.progress-bar-fill{background:var(--brand);height:100%;border-radius:20px}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem}
.stat-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1rem;text-align:left;transition:background-color .2s ease,border-color .2s ease}
.stat-box .num{font-size:1.75rem;font-weight:700;color:var(--text);font-family:var(--font-mono);letter-spacing:-.01em}
.stat-box .label{font-size:.76rem;color:var(--muted);font-weight:500;margin-top:.2rem}

table.data-table{width:100%;border-collapse:collapse;font-size:.9rem}
table.data-table th{padding:.6rem .6rem;border-bottom:1px solid var(--border);text-align:left;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700;font-family:var(--font-mono)}
table.data-table td{padding:.7rem .6rem;border-bottom:1px solid var(--border);text-align:left}
table.data-table tbody tr{transition:background .12s ease}
table.data-table tbody tr:hover{background:var(--hover)}
.badge{padding:.2rem .55rem;border-radius:4px;font-size:.7rem;font-weight:700;font-family:var(--font-mono)}
.badge-pending{background:var(--warn-bg);color:var(--warn-text)}
.badge-approved{background:var(--ok-bg);color:var(--ok)}
.badge-rejected{background:var(--danger-bg);color:var(--danger)}

/* ---------- Toggle switches (4 poziomy testu) ---------- */
.switch-row{display:flex;align-items:center;gap:.9rem;margin:.8rem 0}
.switch{position:relative;width:44px;height:24px;flex-shrink:0}
.switch input{opacity:0;width:0;height:0}
.switch-slider{position:absolute;inset:0;background:var(--border);border-radius:28px;cursor:pointer;transition:.2s}
.switch-slider:before{content:'';position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.switch input:checked + .switch-slider{background:var(--brand)}
.switch input:checked + .switch-slider:before{transform:translateX(20px)}
.level-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:.7rem;margin-top:.8rem}
.level-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:.9rem .5rem;text-align:center;cursor:pointer;transition:border-color .12s ease,background .12s ease}
.level-card.selected{border-color:var(--brand);background:var(--accent-tint)}
.level-card .pct{font-size:1.2rem;font-weight:700;color:var(--text);font-family:var(--font-mono)}
.level-card .name{font-size:.76rem;color:var(--muted)}

/* ---------- Owner panel ---------- */
.owner-page{max-width:860px;margin:0 auto}
.owner-hero{display:flex;align-items:center;gap:1.1rem;margin-bottom:1.8rem}
.owner-hero-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.owner-hero h2{margin:0;color:var(--text);font-size:1.5rem}
.owner-hero p{margin:.2rem 0 0;color:var(--muted);font-size:.9rem}

.owner-card{border-radius:var(--radius);margin-bottom:1.2rem;background:var(--card);box-shadow:var(--shadow-xs);border:1px solid var(--border);transition:background-color .2s ease,border-color .2s ease}
.owner-card-head{display:flex;align-items:center;gap:.65rem;padding:1rem 1.3rem;font-weight:700;font-size:.95rem;color:var(--text);border-bottom:1px solid var(--border)}
.owner-card-head i{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:var(--radius-sm);background:var(--accent-tint);color:var(--accent-text);font-size:.82rem}
.owner-card-body{padding:1.2rem 1.3rem 1.4rem;background:var(--card)}
.owner-card-body>p{margin-top:0;color:var(--muted);font-size:.9rem;line-height:1.55}

.owner-card-settings .owner-card-head i{background:var(--chip-blue-bg);color:var(--chip-blue-text)}
.owner-card-employees .owner-card-head i{background:var(--chip-purple-bg);color:var(--chip-purple-text)}
.owner-card-posters .owner-card-head i{background:var(--chip-orange-bg);color:var(--accent)}

.invite-code-box{background:var(--code-bg);border:1.5px dashed var(--muted);border-radius:var(--radius-sm);padding:.9rem 1rem;text-align:center;font-size:1.4rem;font-weight:700;color:var(--text);letter-spacing:.08em;margin:.6rem 0 1rem;font-family:var(--font-mono);display:flex;align-items:center;justify-content:center;gap:.6rem}
.invite-code-box .icon-btn{font-size:1rem;padding:.35rem .5rem}
.owner-usage-row{display:flex;align-items:center;gap:.8rem}
.owner-usage-row .progress-bar{flex:1}
.owner-usage-row span{font-size:.85rem;color:var(--muted);white-space:nowrap;font-family:var(--font-mono)}

.owner-save-row{display:flex;align-items:center;gap:.8rem;margin-top:1.1rem}
#settings-msg{font-size:.85rem;color:var(--ok);font-weight:600}

.promo-card{display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap;border-radius:var(--radius);margin-bottom:1.4rem;padding:1.3rem 1.4rem;background:var(--accent-tint);border:1px solid var(--brand);box-shadow:var(--shadow-xs)}
.promo-card-icon{width:44px;height:44px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.15rem;flex-shrink:0}
.promo-card-body{flex:1;min-width:220px}
.promo-card-body h3{margin:0 0 .3rem;color:var(--text);font-size:1.05rem}
.promo-card-body p{margin:0;color:var(--text);font-size:.86rem;line-height:1.5;opacity:.9}
.promo-card .btn{flex-shrink:0}

.assign-toolbar{display:flex;flex-direction:column;gap:.9rem;background:var(--code-bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem 1.1rem;margin-bottom:1rem}
.assign-toolbar-label{font-size:1rem;font-weight:700;color:var(--text)}
.assign-course-table{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.assign-course-table td{padding:0;border-bottom:1px solid var(--border);background:var(--card)}
.assign-course-table tr:last-child td{border-bottom:none}
.assign-course-table tr:nth-child(even) td{background:var(--hover)}
.assign-course-check{display:flex;align-items:center;justify-content:space-between;gap:.8rem;font-size:.88rem;line-height:1.3;color:var(--text);cursor:pointer;padding:.65rem .9rem}
.assign-course-check:has(input:checked) span:first-child{font-weight:700;color:var(--brand)}

.toggle-switch{position:relative;flex-shrink:0;display:inline-block;width:42px;height:24px}
.toggle-switch input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer;z-index:1}
.toggle-slider{position:absolute;inset:0;background:var(--border);border-radius:999px;transition:background .18s ease}
.toggle-slider::before{content:"";position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.3);transition:transform .18s ease}
.toggle-switch input:checked + .toggle-slider{background:var(--brand)}
.toggle-switch input:checked + .toggle-slider::before{transform:translateX(18px)}
.toggle-switch input:focus-visible + .toggle-slider{outline:2px solid var(--brand);outline-offset:2px}

.assign-toolbar-actions{display:flex;flex-wrap:wrap;gap:.6rem;padding-top:.3rem}
#assign-msg{font-size:.85rem;font-weight:600}
.course-chip{display:inline-block;padding:.2rem .55rem;border-radius:4px;font-size:.7rem;font-weight:700;font-family:var(--font-mono);background:var(--chip-blue-bg);color:var(--chip-blue-text);margin:.1rem .2rem .1rem 0}

.course-select-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-top:1rem}
.course-select-card{cursor:pointer;padding:1.4rem;transition:box-shadow .15s ease,border-color .15s ease,transform .15s ease}
.course-select-card:hover{border-color:var(--brand);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.course-select-card h3{margin:0 0 .4rem;font-size:1.05rem;color:var(--text)}
.course-select-card p{margin:0 0 .9rem;font-size:.85rem;color:var(--muted);line-height:1.45}

.poster-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1rem;margin-top:.8rem}
.poster-card{border-radius:var(--radius);padding:1.2rem 1.1rem;display:flex;flex-direction:column;align-items:flex-start;border:1px solid var(--border);background:var(--card)}
.poster-card-icon{width:38px;height:38px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1rem;color:#fff;margin-bottom:.8rem}
.poster-card-title{font-weight:700;font-size:.95rem;color:var(--text);margin-bottom:.3rem}
.poster-card-desc{font-size:.82rem;color:var(--muted);line-height:1.4;margin-bottom:1rem;flex:1}
.poster-card-btn{width:100%;justify-content:center;padding:.55rem .6rem;font-size:.82rem}
.poster-green .poster-card-icon{background:var(--brand)}
.poster-orange .poster-card-icon{background:var(--accent)}
.poster-amber .poster-card-icon{background:#8a5a12}

/* ---------- Strefa firmy: tablica ogłoszeń ---------- */
.board-hero{display:flex;align-items:center;gap:1.1rem;margin-bottom:1.6rem}
.board-hero-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.15rem;flex-shrink:0}
.board-eyebrow{display:inline-block;font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:.3rem;font-family:var(--font-mono)}
.board-hero h2{margin:0;color:var(--text);font-size:1.5rem}
.board-hero p{margin:.2rem 0 0;color:var(--muted);font-size:.9rem}

.board-edit-bar{margin-bottom:1.4rem}
.btn.board-add-btn{border-radius:var(--radius-sm)}
.btn-icon-circle{width:22px;height:22px;border-radius:50%;background:rgba(255,255,255,.28);display:inline-flex;align-items:center;justify-content:center;font-size:.68rem;transition:transform .3s ease}
.btn.board-add-btn:hover .btn-icon-circle{transform:rotate(90deg)}

.corkboard{margin-top:.4rem}
.corkboard-inner{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.3rem;
  grid-auto-rows:1fr;
}
.board-empty{grid-column:1/-1;text-align:center;padding:3rem 1rem;color:var(--muted);border:1px dashed var(--border);border-radius:var(--radius)}
.board-empty i{font-size:1.6rem;opacity:.5;margin-bottom:.6rem;display:block}
.board-empty p{margin:0;font-weight:600}

/* Karty jak nagłówki artykułów redakcyjnych: neutralne tło + kolorowy akcent typu
   ograniczony do lewej krawędzi i kickera, zamiast pełnego pastelowego tła "karteczki". */
.board-card{
  --accent-color:var(--muted);
  position:relative;padding:1.3rem 1.35rem 1.1rem;border-radius:var(--radius);
  background:var(--card);
  border:1px solid var(--border);
  border-left:3px solid var(--accent-color);
  box-shadow:var(--shadow-xs);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;
  height:224px;overflow:hidden;
  cursor:pointer;
}
.board-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.board-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.board-card-flag{position:absolute;top:1.1rem;right:1.1rem;display:inline-flex;align-items:center;gap:.3rem;background:var(--accent-color);color:#fff;font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:.25rem .55rem;border-radius:20px;font-family:var(--font-mono)}

.board-card-kicker{display:flex;align-items:center;gap:.4rem;font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.6rem;color:var(--accent-color);font-family:var(--font-mono);flex-shrink:0}
.board-card-title{font-family:var(--font-display);font-weight:800;font-size:1.08rem;line-height:1.32;color:var(--text);margin:0 0 .45rem;letter-spacing:-.01em;flex-shrink:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.board-card-excerpt{font-size:.84rem;color:var(--muted);line-height:1.55;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.board-card-foot{margin-top:auto;padding-top:.7rem;display:flex;align-items:center;justify-content:space-between;gap:.6rem;font-size:.72rem;color:var(--muted);font-family:var(--font-mono);flex-shrink:0}
.board-card-date{display:flex;align-items:center;gap:.35rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.board-card-readmore{display:flex;align-items:center;gap:.3rem;color:var(--accent-color);font-weight:700;white-space:nowrap;opacity:0;transform:translateX(-4px);transition:opacity .15s ease,transform .15s ease}
.board-card:hover .board-card-readmore,.board-card:focus-visible .board-card-readmore{opacity:1;transform:translateX(0)}
.board-card-progress{margin-top:.6rem}
.board-card-progress .progress-bar{height:6px;margin-bottom:.35rem}
.board-card-progress span{font-size:.74rem;color:var(--muted);font-family:var(--font-mono)}
.board-card-actions{display:flex;gap:.4rem;position:absolute;top:.7rem;right:.7rem;opacity:0;transition:opacity .15s ease}
.board-card .board-card-flag ~ .board-card-actions{top:2.4rem}
.board-card:hover .board-card-actions,.board-card:focus-within .board-card-actions{opacity:1}
.board-card-icon-btn{width:26px;height:26px;border-radius:50%;border:none;background:var(--card);box-shadow:var(--shadow-sm);color:var(--muted);display:inline-flex;align-items:center;justify-content:center;font-size:.7rem;cursor:pointer;transition:background .15s ease,color .15s ease}
.board-card-icon-btn:hover{background:var(--accent-tint);color:var(--accent-text)}

/* ---------- Tablica: pełny widok ogłoszenia (układ artykułu) ---------- */
#board-detail-back{margin-bottom:1.2rem}
.board-detail{
  --accent-color:var(--muted);
  position:relative;padding:2.1rem 2.4rem;border-radius:var(--radius-lg);
  background:var(--card);
  border:1px solid var(--border);
  border-top:3px solid var(--accent-color);
  max-width:720px;
}
.board-detail-title{font-family:var(--font-display);font-weight:800;font-size:1.85rem;line-height:1.28;color:var(--text);margin:0 0 .7rem;letter-spacing:-.015em}
.board-detail-meta{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;font-size:.8rem;color:var(--muted);font-family:var(--font-mono);padding-bottom:1.1rem;margin-bottom:1.3rem;border-bottom:1px solid var(--border)}
.board-detail-meta span{display:flex;align-items:center;gap:.4rem}
.board-detail-meta-due{color:var(--accent-color);font-weight:700}
.board-detail-body{font-size:1.02rem;color:var(--text);line-height:1.75}
.board-detail-para{margin:0 0 1.15rem}
.board-detail-para:last-child{margin-bottom:0}
.board-detail-actions{display:flex;gap:.6rem;margin-top:1.4rem;padding-top:1.2rem;border-top:1px solid var(--border)}

.ann-required{--note-bg:#fff9f7;--accent-color:#c0392b}
.ann-completed{--note-bg:#f6fbf5;--accent-color:#2f8f4e}
.ann-new{--note-bg:#fffdf5;--accent-color:#c98a12}
.ann-announcement{--note-bg:#f5faff;--accent-color:#2f6fa3}
:root[data-theme="dark"] .ann-required{--note-bg:rgba(192,57,43,.14);--accent-color:#e8877e}
:root[data-theme="dark"] .ann-completed{--note-bg:rgba(47,143,78,.14);--accent-color:#6fcf8e}
:root[data-theme="dark"] .ann-new{--note-bg:rgba(201,138,18,.16);--accent-color:#e0b23d}
:root[data-theme="dark"] .ann-announcement{--note-bg:rgba(47,111,163,.16);--accent-color:#6fa8d6}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ann-required{--note-bg:rgba(192,57,43,.14);--accent-color:#e8877e}
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ann-completed{--note-bg:rgba(47,143,78,.14);--accent-color:#6fcf8e}
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ann-new{--note-bg:rgba(201,138,18,.16);--accent-color:#e0b23d}
  :root:not([data-theme="light"]):not([data-theme="dark"]) .ann-announcement{--note-bg:rgba(47,111,163,.16);--accent-color:#6fa8d6}
}

@media (max-width:640px){
  .corkboard-inner{grid-template-columns:1fr}
}

@media (max-width:600px){
  .owner-hero{flex-direction:column;text-align:center}
}

/* ---------- Lena AI ---------- */
.lena-box{border:1px solid var(--border);border-radius:var(--radius-sm);padding:1rem;background:var(--code-bg)}
.lena-msg{position:relative;padding:.6rem .85rem;border-radius:var(--radius-sm);margin-bottom:.5rem;max-width:85%;font-size:.9rem;line-height:1.45}
.lena-msg p{margin:0 0 .6rem 0}
.lena-msg p:last-child{margin-bottom:0}
.lena-msg-author{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;opacity:.65;margin-bottom:.25rem}
.lena-msg.user{background:var(--brand);color:#fff;margin-left:auto;padding-right:2.2rem}
.lena-msg.bot{background:var(--card);border:1px solid var(--border)}
.lena-retry-btn{position:absolute;top:.45rem;right:.5rem;background:none;border:none;color:rgba(255,255,255,.75);cursor:pointer;padding:.15rem;font-size:.8rem;line-height:1;transition:color .15s ease}
.lena-retry-btn:hover{color:#fff}
.lena-input-row{display:flex;gap:.5rem;margin-top:.7rem;align-items:flex-end}
.lena-input-row textarea{
  flex:1;resize:none;min-height:2.5rem;max-height:160px;overflow-y:auto;
  padding:.6rem .75rem;border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:.94rem;font-family:inherit;line-height:1.4;background:var(--code-bg);color:var(--text);
}
.lena-input-row textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--accent-tint);outline:none}
.lena-typing{display:flex;align-items:center;min-height:1.2rem}
.lena-typing-dots{display:inline-flex;gap:4px}
.lena-typing-dots span{width:6px;height:6px;border-radius:50%;background:var(--muted);opacity:.5;animation:lena-dot-bounce 1.2s infinite cubic-bezier(.4,0,.2,1)}
.lena-typing-dots span:nth-child(2){animation-delay:.2s}
.lena-typing-dots span:nth-child(3){animation-delay:.4s}
@keyframes lena-dot-bounce{
  0%, 60%, 100% { transform: translateY(0); opacity:.5; }
  30% { transform: translateY(-4px); opacity:1; }
}
.lena-menu-item{cursor:pointer;transition:border-color .15s ease}
.lena-menu-item:hover{border-color:var(--brand)}
.lena-tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem}
.lena-tile{
  cursor:pointer;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--card);
  padding:1.1rem 1rem;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease;
  box-shadow:var(--shadow-xs);
}
.lena-tile:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.lena-tile-icon{
  display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);
  background:var(--accent-tint);color:var(--accent-text);font-size:1rem;margin-bottom:.65rem;
}
.lena-tile-scenario .lena-tile-icon{background:var(--chip-orange-bg);color:var(--accent)}
.lena-tile strong{display:block;font-size:.94rem;line-height:1.3;color:var(--text)}
.lena-tile p{margin:.35rem 0 0;font-size:.78rem;color:var(--muted)}
@media (max-width:480px){
  .lena-tiles{grid-template-columns:1fr}
}

.lena-window{transition:max-width .18s ease,max-height .18s ease}
.lena-window.lena-window-expanded{max-width:80vw !important;max-height:85vh;height:85vh}

/* ---------- Lena AI: pływająca ikonka (FAB) ---------- */
.lena-fab{
  position:fixed;right:1.2rem;bottom:1.2rem;width:58px;height:58px;border-radius:50%;
  background:var(--brand);border:3px solid var(--card);padding:0;cursor:pointer;z-index:40;
  box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;
  overflow:hidden;transition:transform .15s ease;
}
.lena-fab:hover{transform:scale(1.06)}
.lena-fab img{width:100%;height:100%;object-fit:cover;border-radius:50%}
@media (max-width:860px){
  .lena-fab{right:.9rem;bottom:4.6rem;width:52px;height:52px}
}

/* ---------- Fiszki ---------- */
.toc-flashcards{color:var(--accent-text)}
.flashcard{perspective:1600px;cursor:pointer;margin:1rem 0;min-height:240px}
.flashcard-inner{position:relative;width:100%;height:240px;text-align:center;transition:transform .65s cubic-bezier(.22,1,.36,1);transform-style:preserve-3d}
.flashcard:not(.flipped):hover .flashcard-inner{transform:translateY(-3px)}
.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}
.flashcard-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:16px;
  border:1px solid var(--border);display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:1.75rem;box-shadow:0 10px 26px rgba(0,0,0,.14),0 2px 6px rgba(0,0,0,.06);
  transition:box-shadow .25s ease;
}
.flashcard:not(.flipped):hover .flashcard-face{box-shadow:0 14px 32px rgba(0,0,0,.18),0 3px 8px rgba(0,0,0,.08)}
.flashcard-front{background:linear-gradient(155deg,var(--accent-tint),var(--card))}
.flashcard-back{transform:rotateY(180deg);background:linear-gradient(155deg,var(--brand),var(--brand-dark));border-color:var(--brand-dark)}
.flashcard-back .flashcard-text{color:#fff}
.flashcard-type{display:inline-block;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-text);font-weight:700;margin-bottom:.6rem;font-family:var(--font-mono);background:var(--card);padding:.25rem .65rem;border-radius:20px;border:1px solid var(--border)}
.flashcard-text{font-size:1.08rem;line-height:1.55;color:var(--text)}
.flashcard-hint{position:absolute;bottom:.7rem;right:.9rem;font-size:.7rem;color:var(--muted);display:flex;align-items:center;gap:.35rem;opacity:.65}
.flashcard-back .flashcard-hint{color:rgba(255,255,255,.75)}
.flashcard-actions{margin-top:1rem}

/* ---------- Responsive: mobile ---------- */
@media (max-width: 860px){
  .panel{position:fixed;top:0;bottom:0;left:0;width:82%;max-width:320px;z-index:30;margin-left:-100%;box-shadow:2px 0 12px rgba(0,0,0,.25)}
  .panel.open{margin-left:0}
  .panel.right{left:auto;right:0;margin-left:0;margin-right:-100%}
  .panel.right.open{margin-right:0}
  .main{padding:1.2rem 1rem 5rem}
  .form-row{flex-direction:column}
  .level-cards{grid-template-columns:repeat(2,1fr)}
  .bottom-nav{position:fixed;bottom:0;left:0;right:0;background:var(--card);border-top:1px solid var(--border);display:flex;z-index:25}
  .bottom-nav button{flex:1;background:none;border:none;padding:.6rem 0;color:var(--muted);font-size:1.15rem}
  .bottom-nav button.active{color:var(--brand)}
  .overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:29}
  .header-actions{gap:.15rem}
  .header-actions .icon-btn{padding:.5rem .55rem}
  .user-chip-name{display:none}
  .kb-btn-label{display:none}
}
@media (max-width: 420px){
  .header{padding:.6rem .7rem}
  .brand-mark{width:28px;height:28px;font-size:.8rem;border-radius:var(--radius-sm)}
  .brand-text{font-size:.92rem}
  .brand-sub{font-size:.55rem}
}
@media (min-width:861px){
  .bottom-nav{display:none}
}