@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=JetBrains+Mono:wght@400;600;700&display=swap";
.header-slim{color:#fff;z-index:2000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:linear-gradient(90deg,#0d47a1,#1565c0);border-top:1px solid #add8e64d;border-bottom:1px solid #add8e64d;justify-content:space-between;align-items:center;gap:20px;padding:28px 26px 20px;display:flex;position:sticky;top:0;box-shadow:inset 0 -25px 40px #1e2430b3,inset 0 25px 40px #1e2430b3;box-sizing:border-box!important;width:100%!important;max-width:100%!important}.hs-left{flex-direction:column;flex-shrink:1;gap:4px;min-width:0;display:flex}.hs-title{letter-spacing:.5px;color:#ffeb3b;white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:2rem;font-weight:700;text-decoration:none;overflow:hidden}.hs-breadcrumb{opacity:.9;color:#e3f2fd;white-space:nowrap;text-overflow:ellipsis;font-size:1rem;overflow:hidden}.hs-center{flex-wrap:wrap;flex:auto;justify-content:center;align-items:center;gap:10px;min-width:0;display:flex}.hs-btn{color:#fff;cursor:pointer;white-space:nowrap;background:#ffffff2e;border:1px solid #ffffff4d;border-radius:22px;padding:8px 18px;text-decoration:none;transition:all .25s}.hs-btn:hover{background:#ffffff47}.hs-right{flex-wrap:wrap;flex-shrink:0;justify-content:flex-end;align-items:center;gap:10px;min-width:0;display:flex}.hs-right .hs-btn{background:#00000038}.hs-right .logout{background:#ff5252d9}.hs-right .logout:hover{background:#ff3838f2}@media (max-width:900px){.header-slim{text-align:center;flex-direction:column;gap:16px;padding:22px 14px}.hs-left{align-items:center;width:100%}.hs-center{order:3;justify-content:center;width:100%}.hs-right{order:2;justify-content:center;width:100%}}.hs-breadcrumb-link{color:#fbc02d;font-weight:600;text-decoration:none}.hs-breadcrumb-link:hover{color:#f9a825;text-decoration:underline}.hs-title-sm{letter-spacing:.5px;color:#ffeb3b;white-space:nowrap;margin:0;font-size:1.3rem;font-weight:700;text-decoration:none}.hs-title-sm:hover{text-decoration:underline}
body.lesson-page-active{color:#000;background:#fff;font-family:Arial,sans-serif;overflow-x:hidden!important}.lesson-layout-full ul{margin:0;padding:0;list-style:none}.lesson-layout-full ol{counter-reset:item;margin:20px 0;padding:0;list-style:none}.lesson-layout-full .code-wrap{margin:4px 0}.lesson-layout-full .code-wrap pre.code-light{white-space:pre-wrap;word-break:break-word;background:#f2f6fa;border-left:2px solid #457b9d;border-radius:4px;margin:2px 0 0;padding:4px;font-size:.95rem}.lesson-layout-full .code-head{color:#fff;background:#457b9d;border-radius:10px 10px 0 0;justify-content:space-between;align-items:center;padding:2px 4px;font-weight:700;display:flex}.lesson-layout-full .btn-chip{color:#fff;cursor:pointer;background:#fff3;border:2px solid #fff6;border-radius:20px;padding:4px 12px;font-size:.85rem;transition:background .2s}.lesson-layout-full .btn-chip:hover{background:#ffffff4d}.lesson-layout-full h3{font-size:18px;font-weight:700}.lesson-layout-full h4{font-size:16px;font-weight:700}.lesson-layout-full input,.lesson-layout-full textarea{background:#fff;border:2px solid #000;border-radius:4px;padding:8px}.lesson-layout-full input[type=radio]{background:#000;border:2px solid #000}.lesson-layout-full input[type=radio]:checked:before{background:#457b9d}.lesson-layout-full .expl{text-align:justify;margin-bottom:1rem;font-size:1.05rem;line-height:1.8}.lesson-layout-full .expl code{color:#222;background:#f1f1f1;border-radius:4px;padding:2px 5px;font-family:monospace;font-size:.8em;font-weight:700}.lesson-layout-full .lesson-header{z-index:1000;color:#fff;background:linear-gradient(90deg,#4facfe,#00f2fe);justify-content:space-between;align-items:center;padding:10px 16px;font-weight:700;display:flex;position:sticky;top:0;box-shadow:0 2px 6px #0003}.lesson-layout-full .lesson-header nav a{color:#fff;border-radius:4px;padding:4px 8px;text-decoration:none;transition:background .2s}.lesson-layout-full .lesson-header nav a:hover{background:#fff3}.lesson-layout-full{box-sizing:border-box;white-space:normal;flex-wrap:nowrap;gap:16px;width:100%;max-width:100%;padding:1px 16px 16px;display:flex;overflow:hidden auto}.lesson-left-full{background:#fff;border-radius:12px;flex:0 0 60%;min-width:0;max-width:60%;padding:24px;box-shadow:0 3px 10px #00000014}.lesson-left-full h2{color:#1d3557;border-left:6px solid #457b9d;margin-top:28px;padding-left:12px;font-size:1.45rem;font-weight:700}.lesson-right-full{background:#fff;border-radius:12px;flex:0 0 40%;min-width:0;max-width:40%;padding:24px;box-shadow:0 3px 10px #00000014;height:auto!important;overflow:visible!important}.lesson-right-full h2{color:#1d3557;border-left:6px solid #457b9d;margin-top:22px;padding-left:12px;font-size:1.35rem;font-weight:700}.lesson-layout-full pre{white-space:pre-wrap;word-break:break-word;background:#f2f6fa;border-left:6px solid #457b9d;border-radius:10px;margin:16px 0;padding:14px;font-size:.95rem}.lesson-left-full p,.lesson-right-full p{margin:8px 0;line-height:1.65}.lesson-layout-full .exercise-box,.lesson-layout-full .extra-box,.lesson-layout-full .lesson-quiz{background:#f4f8ff;border:1px solid #c8d8eb;border-radius:10px;margin-top:20px;padding:16px}.lesson-layout-full .extra-box{background:#e9f2ff}.lesson-layout-full button{cursor:pointer;border:none;border-radius:6px;padding:8px 14px;transition:all .25s;color:#fff!important;background:#457b9d!important}.lesson-layout-full button:hover{background:#1d3557!important}@media (max-width:900px){.lesson-layout-full{flex-direction:column;gap:16px;padding-top:4px;padding-left:4px;padding-right:4px}.lesson-left-full,.lesson-right-full{flex:none;width:100%;max-width:100%;padding:8px}}@media (min-width:901px){.lesson-right-full{min-width:0!important;max-width:40%!important;overflow:hidden!important}}.lesson-right-full *{box-sizing:border-box;max-width:100%!important}.lesson-right-full pre{white-space:pre-wrap!important;text-wrap:wrap!important;overflow-x:hidden!important}.lesson-right-full img{display:block;max-width:100%!important;height:auto!important}.lesson-layout-full :not([style*=position\:fixed]):not([style*="position: fixed"]){box-sizing:border-box!important;max-width:100%!important}.lesson-layout-full pre,.lesson-layout-full code{white-space:pre-wrap!important;word-break:break-word!important;overflow-x:auto!important}.lesson-layout-full img{display:block;max-width:100%!important;height:auto!important}
.scroll-btn{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;cursor:pointer;z-index:3000;background:#0009;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:22px;transition:all .25s;display:flex;position:fixed;right:22px}.scroll-btn:hover{background:#000c;transform:scale(1.12)}.scroll-up{bottom:110px}.scroll-down{bottom:40px}
:root{--lesson-accent:#1565c0;--lesson-accent-bg:#e3f2fd;--lesson-accent-bg2:#eff6ff;--lesson-accent-border:#90caf9;--lesson-accent-border2:#bbdefb;--lesson-text-color:#374151;--lesson-text-dark:#1e3a5f}.slp-root *{box-sizing:border-box;font-family:Nunito,sans-serif}.slp-root code,.slp-root pre{font-family:JetBrains Mono,monospace}.lesson-text{color:var(--lesson-text-color);font-size:14px;line-height:1.7}.lesson-text-tight{color:var(--lesson-text-color);font-size:14px;line-height:1.8}.lesson-label{margin-bottom:6px;font-size:14px;font-weight:800;display:block}.lesson-label-inline{text-transform:uppercase;letter-spacing:.04em;font-size:13px;font-weight:800}.lesson-code{margin:0;font-family:JetBrains Mono,monospace;font-size:13px;line-height:2}.lesson-badge{font-size:11px;font-weight:800}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes bounceIn{0%{opacity:0;transform:scale(.7)}60%{transform:scale(1.08)}to{opacity:1;transform:scale(1)}}@keyframes stepPop{0%{opacity:0;transform:scale(.95)translate(-6px)}to{opacity:1;transform:scale(1)translate(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.slp-root .btn-sim{transition:all .18s}.slp-root .btn-sim:not(:disabled):hover{filter:brightness(1.12);transform:translateY(-2px);box-shadow:0 4px 14px #0000002e}.slp-root .btn-sim:not(:disabled):active{transform:scale(.96)}.slp-root .step-active{animation:.22s both stepPop!important}.slp-root .slp-prob-card:hover{transition:all .22s;transform:translateY(-2px);box-shadow:0 8px 24px #0000001a}.lesson-box{border:1.5px solid var(--lesson-accent-border);background:var(--lesson-accent-bg);border-radius:10px;padding:12px}.lesson-box-alt{border:1.5px solid var(--lesson-accent-border);background:var(--lesson-accent-bg2);border-radius:10px;padding:12px}.lesson-box ul,.lesson-box-alt p{color:var(--lesson-text-color);margin:0;font-size:14px}.lesson-box ul{padding-left:16px;line-height:2}.lesson-box-alt p{line-height:1.8}.lesson-code-header{border:1.5px solid var(--lesson-accent-border);background:#1565c022;border-bottom:none;border-radius:8px 8px 0 0;padding:6px 12px}.lesson-code-grid{border:1.5px solid var(--lesson-accent-border);border-radius:0 0 10px 10px;grid-template-columns:1fr 1fr;gap:0;display:grid;overflow:hidden}.lesson-code-grid pre:first-child{background:var(--lesson-accent-bg);border-right:1px solid var(--lesson-accent-border2)}.lesson-code-grid pre:last-child{color:var(--lesson-text-color);background:#f8faff}.lesson-code-grid pre{margin:0;padding:12px;font-family:JetBrains Mono,monospace;font-size:13px;line-height:2}.lesson-callout{color:#374151;border-radius:0 10px 10px 0;align-items:flex-start;gap:10px;margin-top:10px;padding:10px 14px;font-size:14px;font-weight:600;line-height:1.7;display:flex}.lesson-callout-info{background:#eff6ff;border:2px solid #3b82f640;border-left:4px solid #3b82f6}.lesson-callout-tip{background:#f0fdf4;border:2px solid #22c55e40;border-left:4px solid #22c55e}.lesson-callout-warn{background:#fffbeb;border:2px solid #f59e0b40;border-left:4px solid #f59e0b}.lesson-collapse{border:2px solid #1565c035;border-radius:16px;margin-bottom:20px;transition:box-shadow .3s;overflow:hidden}.lesson-collapse-header{cursor:pointer;text-align:left;border:none;align-items:center;gap:10px;width:100%;padding:13px 18px;font-size:14px;font-weight:800;transition:all .2s;display:flex}.lesson-collapse-header:hover{filter:brightness(1.08);transform:translateY(-1px)}.lesson-collapse-body{background:linear-gradient(#fafcff 0%,#f5f8fe 100%);padding:18px 22px;animation:.2s both fadeSlideIn}.lesson-prob-card{border:2px solid #e2e8f0;border-radius:14px;margin-bottom:10px;transition:all .22s;overflow:hidden;box-shadow:0 2px 8px #0000000a}.lesson-prob-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001a}.lesson-prob-title{color:var(--lesson-text-dark);flex:1;font-size:14px;font-weight:800}.lesson-prob-enunt{color:var(--lesson-text-color);background:#fff;padding:9px 14px;font-size:14px;font-weight:500;line-height:1.7}.lesson-btn{cursor:pointer;border:none;font-family:Nunito,sans-serif;font-weight:800;transition:all .18s}.lesson-btn:hover{filter:brightness(1.12);transform:translateY(-2px);box-shadow:0 4px 14px #0000002e}.lesson-btn:active{transform:scale(.96)}.lesson-quiz p{font-size:14px}.lesson-quiz label{font-size:14px;display:block}.pseudocod-cod{font-weight:700}.pseudocod-comentariu{color:#637074;font-style:italic;font-weight:400}
.rec-tree-container{background:#fff;border:1px solid #ddd;border-radius:12px;max-height:420px;margin-top:20px;padding:18px;position:relative;overflow-y:auto;box-shadow:0 3px 10px #0002}.rec-tree-container::-webkit-scrollbar{width:8px}.rec-tree-container::-webkit-scrollbar-thumb{background:#bbb;border-radius:4px}.rec-tree-container::-webkit-scrollbar-thumb:hover{background:#888}.rec-tree{flex-direction:column;align-items:center;gap:22px;margin:0 auto;display:flex}.rec-level{justify-content:center;gap:26px;display:flex;position:relative}.rec-node{text-align:center;opacity:1;background:#f4f4f4;border:2px solid #ccc;border-radius:12px;min-width:80px;padding:7px 14px;font-family:Consolas,Courier New,monospace;font-size:14px;transition:all .25s;position:relative;box-shadow:0 0 #0000}.rec-node.active{z-index:3;background:#daf0ff;border-color:#1a8cff;transform:scale(1.07);box-shadow:0 0 14px #1a8cff88}.rec-node.return{background:#e6ffe6;border-color:#28a745;animation:.35s bounce;box-shadow:0 0 10px #28a74566}@keyframes bounce{0%{transform:scale(1)}45%{transform:scale(1.14)}to{transform:scale(1)}}.rec-node.enter{opacity:0;animation:.5s forwards fadein}@keyframes fadein{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.rec-line-vertical{background:#bbb;width:2px;height:18px;position:absolute;top:-18px;left:50%;transform:translate(-50%)}.rec-line-horizontal{background:#bbb;height:2px;position:absolute;top:-18px;left:0}.rec-line-grow{opacity:0;animation:.4s forwards growLine}@keyframes growLine{0%{opacity:.2;height:0}to{opacity:1;height:18px}}.rec-children{justify-content:center;gap:30px;margin-top:20px;display:flex;position:relative}.rec-node:nth-child(odd){margin-left:8px}.rec-node:nth-child(2n){margin-right:8px}.rec-timeline{color:#444;margin-top:15px;font-family:monospace}.rec-step-current{background:#ffe9b5;border-radius:6px;padding:3px 6px;font-weight:700}@media (max-width:700px){.rec-tree-container{max-height:300px}.rec-node{min-width:60px;padding:6px 10px;font-size:12px}.rec-children{gap:10px}}.char-boxes{flex-wrap:wrap;gap:4px;display:flex}.char-box{background-color:#f8f8f8;border:1px solid #ccc;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;width:28px;height:38px;transition:background-color .3s;display:flex}.char-box span{font-size:18px;font-weight:700}.char-index{color:#777;font-size:10px}.char-cons{color:#fff;background-color:#2ecc71}.char-word{color:#fff;background-color:#3498db}.char-vowel{color:#000;background-color:#f1c40f}.char-visited{color:#777;background-color:#ddd}.char-box{background:#eee;border-radius:3px;margin:1px;padding:2px 4px;display:inline-block}.char-box.green{color:#064d06;background:#c9f5c9;font-weight:700}.func-table{border-collapse:collapse;width:100%;margin:10px 0}.func-table th,.func-table td{border:1px solid #ccc;padding:6px 10px}.func-table th{background:#f0f0f0}.row-focus{background:#fff8b3;transition:background .3s}.swap-flash{animation:.6s swapFlash;background:#ffd6cc!important}@keyframes swapFlash{0%{background-color:#ff9c8a}to{background-color:#fff8b3}}.idx{color:#888;margin-left:6px;font-size:.85em}.char-found{color:#000;background:#ffeb3b;border:1px solid #d6b800;transition:all .3s ease-in}@keyframes fadeOutChar{0%{opacity:1;background:#ffeb3b}to{opacity:0;background:0 0}}.char-fade{color:#888;border:1px solid #ccc;animation:1s forwards fadeOutChar}.quiz-opt{background:#f8fbff;border-radius:6px;margin:6px 0;padding:6px 10px;transition:background .2s;display:block}.quiz-opt:hover{background:#eef6ff}.quiz-opt input{margin-right:8px}.table-clean{border-collapse:collapse;background:#fff;width:100%;margin:16px 0;font-size:15px;box-shadow:0 1px 3px #0000000a}.table-clean th,.table-clean td{text-align:left;vertical-align:top;border:1px solid #d8e4f7;padding:8px 12px}.table-clean thead th{color:#102a43;background-color:#e9f3ff;font-weight:600}.table-clean tbody tr:nth-child(2n){background-color:#f6faff}.table-clean tbody tr:hover{background-color:#eef6ff;transition:background-color .2s}.th-colored{color:#0b213f;background:#e9f3ff;border-bottom:2px solid #c9ddf2;font-weight:700}.code-light{white-space:pre;color:#172b4d;background:#f8fbff;border:1px solid #d8e4f7;border-radius:8px;margin:10px 0;padding:10px 12px;font-family:Courier New,monospace;font-size:14px;overflow-x:auto}.note{color:#0b213f;background:#f1f9ff;border:1px solid #b3d4fc;border-radius:10px;margin:10px 0;padding:10px 12px;font-size:15px}.note b{color:#084b8a}.head-soft{background:#e9f3ff;border:1px solid #d8e4f7;font-weight:600}.warn.soft{color:#6a4b00;background:#fff8e6;border:1px solid #ffecb3}.lesson-left-full h2{color:#0b213f;border-left:5px solid #6ba5ff;margin-top:28px;padding-left:10px}.lesson-left-full h3{color:#114b8a;margin-top:18px}.lesson-left-full hr{background:#d8e4f7;border:none;height:1px;margin:20px 0}.lesson-left-full ul{margin:8px 0 12px 20px;list-style-type:"• "}.lesson-left-full li{margin:4px 0}.lesson-left-full code{color:#0b213f;background:#eef4fb;border-radius:4px;padding:2px 5px;font-size:14px}.code-light{white-space:pre;color:#0f172a;background:#f9fbff;border:1px solid #e6ecf5;border-radius:10px;padding:12px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.95rem;line-height:1.45;overflow:auto}.code-light code{background:0 0;padding:0}.c-comment{color:#5c7c5f;font-style:italic}.callout.soft{background:#fbfcff;border:1px solid #e6ecf5;border-radius:10px;margin:12px 0;padding:12px 14px}.callout.warn.soft{background:#fffdf3;border-color:#ffe58f}.callout.info.soft{background:#f5faff;border-color:#bfe0ff}.table-like{grid-template-columns:1fr;gap:6px;margin:10px 0;display:grid}.table-like .row{background:#fff;border:1px solid #e6ecf5;border-radius:10px;grid-template-columns:260px 1fr;align-items:flex-start;gap:14px;padding:10px 14px;transition:background .25s;display:grid}.table-like .row:hover:not(.head-soft){background:#f4f8ff}.table-like.blue.striped .row:nth-child(odd):not(.head-soft){background:#fff}.table-like.blue.striped .row:nth-child(2n):not(.head-soft){background:#f5f9ff}.table-like .row.head-soft{color:#0b1e3a;background:#eaf3ff;border-color:#d9e8ff;font-weight:700}.table-like .row.head-soft>div{border-right:1px solid #d1e4ff;padding-right:10px}.table-like .row.head-soft>div:last-child{border-right:none}.table-like.wide{border-radius:12px;width:100%;overflow:hidden;box-shadow:0 1px 4px #0000000d}.table-like.wide .row{grid-template-columns:25% 75%;padding:12px 16px}code{background:#f2f6ff;border:1px solid #e3eaf8;border-radius:6px;padding:0 6px}.lesson-left-full h2,.lesson-left-full h3{margin:12px 0 8px}.lesson-left-full p{margin:6px 0}.lesson-left-full hr{border:none;border-top:1px dashed #e6ecf5;margin:14px 0}.char-boxes{flex-wrap:wrap;justify-content:flex-start;align-items:flex-start;gap:8px;margin:14px 0 18px;font-family:monospace;font-size:1.1rem;display:flex}.char-box{color:#0b1e3a;background:#f9fbff;border:1px solid #ccdffb;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;width:32px;height:40px;transition:all .25s;display:flex;position:relative}.char-index{color:#7a8aa3;font-size:11px;position:absolute;bottom:-14px}.char-cursor{background:#fff7d6;border-color:#ffd84d}.char-hit{color:#0f3c15;background:#d9f7d9;border-color:#2ea043;font-weight:700}.char-accum{color:#094c09;background:#ecffec;border-color:#9cd69c}.char-box[title]:hover:after{content:attr(title);color:#fff;white-space:nowrap;z-index:5;background:#004080;border-radius:5px;padding:3px 6px;font-size:12px;position:absolute;bottom:110%;left:50%;transform:translate(-50%)}.char-vowel-focus{color:#064b06;background:#b7f7c5;border:2px solid #28a745;font-weight:700}.char-vowel-seen{color:#063d09;background:#8ae69d;font-weight:600}.char-space-focus{color:#0b294d;background:#cde6ff;border:2px solid #5aa9ff;font-weight:700}.char-space-seen{color:#052f63;background:#a9d5ff;font-weight:600}.char-cursor{background:#fff8c6;border:1px solid #ffd84d}.char-visited{color:#777;background:#f0f2f8}.char-first-half{color:#002f75;background:#e8f0ff}.char-swap{color:#5a4300;background:#fff1a6;border:2px solid #ffc107;font-weight:700;animation:.6s ease-in-out pulseSwap}.char-neutral{color:#555;background:#f8f9fb}@keyframes pulseSwap{0%{transform:scale(1);box-shadow:0 0 #ffd900}50%{transform:scale(1.2);box-shadow:0 0 12px #ffc107}to{transform:scale(1);box-shadow:0 0 #ffd900}}