/* CyberHero: a tactile, colorful app system. Nunito includes Vietnamese. */
:root{--ink:#292441;--muted:#716c83;--purple:#7352d6;--yellow:#ffd85d;--bg:#fff9ef;--line:#e8e2ee;--green:#158562;--mint:#19ac85;--panel:#fff;--accent:#7352d6;--accent-rgb:115,82,214}
body{font-family:'Nunito','Arial Rounded MT Bold','Be Vietnam Pro',sans-serif;background:#fff9ef;color:var(--ink);color-scheme:light;font-size:17px;line-height:1.65}button,input,textarea,select{font-family:inherit;color-scheme:light}h1,h2,h3{font-weight:900;letter-spacing:-.5px}button{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #4058b9;outline-offset:5px}
.sidebar{background:#fff;border-right:2px solid #eee8f3;padding-top:27px}.brand{font-size:28px;color:#332659}.brand .purple{color:#7c50dc}.brand img{filter:none}.brand small{color:#857399;font-size:9px;letter-spacing:1px}.side-label{font-size:10px;font-weight:900;color:#9384a4;margin-top:30px}nav a{font-weight:900;color:#797285;border-radius:16px;border:2px solid transparent;padding:13px 12px}nav a span{font-size:14px}nav a .ui-icon{color:#978eaa;stroke-width:2.3}nav a:hover{color:#55389b;background:#f5efff}nav a.active{background:#eee4ff;color:#6442b5;border:2px solid #cab4f3;box-shadow:0 4px 0 #cfbfea,inset 0 2px 0 #fff}nav a.active .ui-icon{color:#8054d1}nav i{background:#ffda66;color:#765308;font-size:8px}.side-helper{background:#fff2c8;border:2px solid #f2d77f;border-radius:22px;box-shadow:0 5px 0 #edd7a3;padding:20px 10px}.side-helper b{font-size:17px;color:#71551f}.side-helper p{font-size:13px;color:#927332}.side-helper .btn{background:#fff!important;color:#846018!important;border:2px solid #ead592;box-shadow:0 4px 0 #dfc783!important}.powered{border-top:2px solid #eee7f3;padding-top:18px}.powered img{width:65px;height:65px;opacity:1;background:#fff;object-fit:contain}.powered b{color:#635574;font-size:10px}.powered span{color:#83748d}
.topbar{background:#ffffffed;border-bottom:2px solid #ece6f3;height:90px;gap:20px;padding:0 34px}.drabuff-top{display:flex;align-items:center;gap:9px;text-decoration:none;color:#332942;flex-shrink:0}.drabuff-top img{width:72px;height:66px;object-fit:contain;background:white}.drabuff-top b{font-size:17px;font-weight:1000;letter-spacing:1.6px;display:block}.drabuff-top small{font-size:11px;color:#83718e;display:block;font-weight:800}.breadcrumb{margin-right:auto;font-size:12px;color:#8a8194}.breadcrumb b{color:#655875}.breadcrumb span{color:#c3b6cf}.top-actions{margin-left:auto}.icon-btn{width:43px;height:43px;border:2px solid #e6deef;background:#fff;color:#8d7ba6;border-radius:14px;box-shadow:0 4px 0 #e6deef}.icon-btn:active{transform:translateY(4px);box-shadow:none}.icon-btn.on{background:#def7ed;color:#0b8162;border-color:#a6ddcd}.profile-btn{font-size:13px;color:#5f5271;font-weight:900}.profile-btn small{color:#9786a5;font-size:11px}.avatar{background:#ffd95d;border:2px solid #f4c139;color:#8f600c;box-shadow:0 3px 0 #e8b83c;width:42px;height:42px}
main{padding:28px 34px 48px}.welcome{margin-bottom:23px}.welcome h1{font-size:27px;font-weight:900;color:#3a3052}.welcome .mini-label{font-size:10px;letter-spacing:1px;color:#a191ae}.status-live{font-size:12px;color:#869a81}.status-live i,.live-dot{background:#22b18a;box-shadow:none;width:7px;height:7px}
.hero-v2{background:#eee5ff;border:2px solid #d2bdf3;border-radius:30px;min-height:435px;padding:37px 36px;box-shadow:0 8px 0 #d9c8ed,0 18px 30px #8b6da114;overflow:hidden}.hero-scene{inset:0 0 0 auto;width:57%;height:100%;object-fit:cover;object-position:77% 52%;transform:none;animation:none;border-radius:100px 0 0 100px}.hero-shade{background:linear-gradient(90deg,#eee5ff 0%,#eee5ff 42%,#eee5ff65 56%,transparent 70%);z-index:-2}.hero-copy{width:59%}.hero-v2 .eyebrow{font-size:10px;font-weight:900;color:#9b73c0;letter-spacing:1px}.hero-v2 h2{font-size:48px;line-height:1.12;letter-spacing:-1.7px;color:#4d3181;font-weight:1000;margin:18px 0}.hero-v2 h2 span{color:#8052d6;text-shadow:0 3px 0 #d2bced}.hero-v2 p{font-size:15px;color:#86729e;line-height:1.8;max-width:340px}.hero-buttons{margin-top:24px;gap:12px}.hero-trust{font-size:11px;color:#9a85b0;font-weight:800;gap:12px}.hero-trust .ui-icon{color:#9b82b6}.hero-hud{background:#fff;backdrop-filter:none;border:2px solid #d9cced;box-shadow:0 5px 0 #b8a1da;border-radius:16px;padding:10px 12px;right:19px;bottom:24px}.hero-hud b{color:#5e4685;font-size:10px}.hero-hud small{color:#9583ad}.hud-icon{color:#a16ada;background:#f2e8ff;border-radius:12px}.hero-hud i{background:#19b58c;box-shadow:none}.hero-coordinate{font-weight:900;color:#f0e9ff;font-size:8px;letter-spacing:1px;right:17px;top:14px}.hero-coordinate span{color:#ffdf75}
.btn,.level-card .btn,.level-card:nth-child(2) .btn,.level-card:nth-child(3) .btn,.lab-card .btn{--btn-fill:#8157df;--btn-edge:#573499;background:var(--btn-fill);color:#fff;border:2px solid #ffffff38;border-radius:16px;box-shadow:0 7px 0 var(--btn-edge),inset 0 2px 0 #ffffff40,0 10px 14px #67459c16;font-size:15px;font-weight:1000;padding:13px 20px;line-height:1.5;transition:transform .12s,box-shadow .12s,filter .12s}.btn:hover,.level-card .btn:hover,.lab-card .btn:hover{background:var(--btn-fill);filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 9px 0 var(--btn-edge),inset 0 2px 0 #ffffff40,0 13px 18px #67459c16}.btn:active,.level-card .btn:active,.lab-card .btn:active{transform:translateY(6px);box-shadow:0 1px 0 var(--btn-edge),inset 0 2px 0 #ffffff30}.btn.ghost,.btn.white{--btn-fill:#fff;--btn-edge:#c7b5e3;background:#fff;color:#8b65ba;border:2px solid #d5c2ee;box-shadow:0 6px 0 #c7b5e3;font-size:14px}.btn.ghost:hover{background:#fff;box-shadow:0 8px 0 #c7b5e3}.btn.ghost:active{box-shadow:0 1px 0 #c7b5e3}.btn.yellow{--btn-fill:#ffce49;--btn-edge:#dfa931;color:#785407}.btn.small{font-size:13px;padding:10px 15px}.btn .ui-icon{stroke-width:2.5}.btn:disabled{filter:grayscale(.5);cursor:not-allowed}
.stats{gap:15px;margin:25px 0 36px}.stat{background:white;border:2px solid #ebe4f2;border-radius:20px;box-shadow:0 5px 0 #ece4f1;padding:18px 14px;gap:12px}.stat:after{display:none}.stat strong{font-size:27px;font-weight:1000;color:#564370}.stat small{font-size:12px;color:#9b8baa;font-weight:800}.stat-total{font-size:10px;color:#b09abb}.stat-icon{background:#e1f6ee;color:#22ac8a;border-radius:13px;height:44px;width:44px;box-shadow:0 3px 0 #c6e8dc}.stat:nth-child(2) .stat-icon{background:#fff0ba;color:#e8aa24;box-shadow:0 3px 0 #efd88f}.stat:nth-child(3) .stat-icon{background:#f0e5ff;color:#a46de0;box-shadow:0 3px 0 #dbc4f4}.stat:nth-child(4) .stat-icon{background:#e2f4ff;color:#56b7dd;box-shadow:0 3px 0 #c4e5f4}
.section-heading h2{font-size:28px;color:#4a385f;font-weight:1000}.mini-label,.section-heading .mini-label{font-size:10px;color:#a889bb;letter-spacing:1px;font-weight:1000}.section-heading p{font-size:14px;color:#9b8aa7}.text-btn{color:#a47ac5;font-size:13px;font-weight:900;min-height:44px}.text-btn:hover{color:#674298}.mint{--accent:#18a685;--accent-rgb:24,166,133;--soft:#e1f7ed;--edge:#b7dccd}.cyan{--accent:#329dc6;--accent-rgb:50,157,198;--soft:#e6f6ff;--edge:#b8ddea}.violet{--accent:#9461d8;--accent-rgb:148,97,216;--soft:#f0e6ff;--edge:#d4bcef}.amber{--accent:#bb8a24;--accent-rgb:187,138,36;--soft:#fff5cc;--edge:#ead8a0}.pink{--accent:#d7739b;--accent-rgb:215,115,155;--soft:#ffeaf2;--edge:#edc6d5}.coral{--accent:#dc8155;--accent-rgb:220,129,85;--soft:#fff0e4;--edge:#edccb1}
.level-grid{gap:22px}.level-card{background:var(--soft);border:2px solid var(--edge);box-shadow:0 7px 0 var(--edge),0 14px 25px #72548b0a;border-radius:27px;padding:25px;transform-style:flat}.level-card:hover{border-color:var(--accent);box-shadow:0 9px 0 var(--edge),0 18px 28px #72548b16}.level-card:before,.lesson-card:before,.lab-card:before{display:none}.level-card .ribbon,.level-card:nth-child(2) .ribbon,.level-card:nth-child(3) .ribbon{font-size:9px;color:var(--accent);font-weight:900}.pill,.level-card .pill{background:#fff;border:2px solid var(--edge);color:var(--accent);border-radius:9px;font-size:10px;font-weight:900}.level-emblem{height:118px;margin:16px 0}.emblem-ring{border:2px dashed var(--edge);box-shadow:none;background:none;width:115px;height:115px;animation:none}.emblem-core{width:75px;height:80px;background:var(--accent);border:2px solid #ffffff60;border-radius:23px;box-shadow:0 7px 0 var(--edge),inset 0 3px 0 #ffffff50;transform:rotate(-7deg)}.emblem-core .ui-icon{color:#fff;filter:none;stroke-width:2.3}.emblem-number{color:var(--edge);font-size:55px}.orb{border-width:2px;box-shadow:none;width:8px;height:8px}.level-subtitle{font-size:12px;font-weight:900}.level-card h3{color:var(--accent);font-size:27px;font-weight:1000}.level-card p{font-size:14px;color:#8a8b90;min-height:77px;line-height:1.8}.tags{color:#8c8d96;font-size:11px;font-weight:900;gap:10px}.tags .ui-icon{color:var(--accent)}.level-card .btn{--btn-fill:var(--accent);--btn-edge:color-mix(in srgb,var(--accent),#252040 26%);font-size:13px}.journey-section{margin-bottom:43px}
.radar-grid{gap:16px}.radar-card{background:#fff;border:2px solid #ece4f2;border-radius:21px;box-shadow:0 5px 0 #e9e1ee;padding:18px;color:#786388}.radar-card .mini-label{font-size:9px;color:var(--accent);font-weight:1000}.radar-card h3{font-size:15px;font-weight:900;line-height:1.5}.radar-icon{background:var(--soft);border:2px solid var(--edge);width:43px;height:43px;border-radius:13px;box-shadow:0 3px 0 var(--edge)}.radar-card:hover{background:var(--soft);border-color:var(--edge);box-shadow:0 8px 0 var(--edge)}.radar-card:active{transform:translateY(4px);box-shadow:0 1px 0 var(--edge)}.radar-card>.ui-icon{color:var(--accent)}
.mission-card,.expert-card{border:2px solid #e3d3ef;border-radius:25px;background:#fff;box-shadow:0 6px 0 #e6dced}.mission-card .mini-label,.expert-card .mini-label{font-size:10px;color:#b49ac6}.mission-body h3{color:#725391;font-size:22px;font-weight:1000}.mission-body p,.expert-card p{font-size:14px;color:#a38eaf}.mission-illustration{background:#ffe6b2;color:#d39937;border:2px solid #f7d183;box-shadow:0 6px 0 #efd397;border-radius:24px}.expert-card{background:#f2e9ff;padding-right:155px;min-height:240px}.expert-card h3{color:#8963af;font-size:19px;font-weight:1000}.expert-card .signature{color:#b297c6;font-size:12px}.expert-card .expert-image{filter:none;right:0;bottom:0}.continue-mission{background:#e5f6ed;border:2px solid #bcdfce;border-radius:23px;box-shadow:0 5px 0 #cee6d9;padding:22px}.continue-mission h3{font-size:21px;font-weight:1000;color:#488772}.mission-symbol{background:#25b894;color:white;border:2px solid #82d5ba;box-shadow:0 4px 0 #98cdb9;border-radius:17px}.continue-mission .mini-label{color:#70a18d;font-size:10px}.continue-mission small{color:#83a597;font-size:12px}.progress-track,.continue-mission .progress-track{background:#e8e0f1;height:12px;border-radius:10px;border:2px solid #ded4e9}.progress-track div{background:#9e78e2;box-shadow:inset 0 3px 0 #c6a7f0;border-radius:9px}.continue-mission .progress-track div{background:#41bb94;box-shadow:inset 0 3px 0 #84d8ba}
.page-intro h1{font-size:36px;color:#5b4475;font-weight:1000}.page-intro p{color:#a18dab;font-size:15px}.page-intro .eyebrow{color:#b08acb;font-size:11px}.tabs{gap:12px}.tab{background:#fff;color:#9d82b2;border:2px solid #e5d6ef;border-radius:16px;box-shadow:0 4px 0 #e5d6ef;font-size:14px;font-weight:900}.tab span{color:#b59bc4;font-size:11px}.tab.active{background:#9c78d8;color:white;border-color:#c1a4ec;box-shadow:0 5px 0 #825bbd}.tab.active span{color:#e9d7ff}.course-summary{background:#efe6fb;border:2px solid #dac4f1;border-radius:25px;box-shadow:0 6px 0 #e1d3ed}.course-summary h2{color:#8f68b3;font-weight:1000;font-size:30px}.course-summary p,.course-summary small{color:#ab91be;font-size:14px}.course-summary .mini-label{color:#b091c4}.summary-orbit{background:white;border:3px solid #d5b5ef;box-shadow:0 5px 0 #dac4eb;color:#a77acd}.summary-orbit span{font-weight:1000}.filter-tabs{background:#eee5f4;border:2px solid #e3d5ed;border-radius:16px}.filter-btn{font-size:12px;color:#aa8cbb;font-weight:900;min-height:43px;border-radius:11px}.filter-btn.active{background:#fff;color:#a87ac6;box-shadow:0 3px 0 #d5bfdf}.course-search{background:#fff;border:2px solid #e1d5ec;border-radius:16px;padding:12px 14px}.course-search input{color:#8c6ba5;font-size:14px}.course-search input::placeholder{color:#c1a6cf}.course-search .ui-icon{color:#b499c5}.chapter-title>span{background:#f2dc9b;color:#b69035;border:2px solid #ecd183;box-shadow:0 4px 0 #e2c77e;border-radius:12px;font-weight:1000;width:44px;height:44px}.chapter-title h2{font-size:24px;color:#a781ba;font-weight:1000}.chapter-title small{font-size:10px;color:#bea6ce}.chapter-line{background:#ecdeef;height:2px}.lesson-card{background:#fff;border:2px solid #e7dbee;border-radius:22px;box-shadow:0 5px 0 #e5daea;padding:23px;min-height:255px;--accent:#ad88c9}.lesson-card:hover{border-color:#c8a2e1;box-shadow:0 8px 0 #d6c3e3;transform:translateY(-3px)}.lesson-card:active{transform:translateY(4px);box-shadow:0 1px 0 #d6c3e3}.lesson-card h3{font-size:19px;font-weight:1000;color:#8e6ca3;line-height:1.5}.lesson-number{color:#c9b0d7;font-size:14px}.lesson-card .lesson-type-pill{font-size:9px;color:#b397c6;background:#f5eef9;border:1px solid #e7d9ef;border-radius:8px;letter-spacing:.5px}.lesson-symbol{filter:none;font-size:34px}.lesson-card small{font-size:12px;color:#baa4c5}.lesson-bottom{border-top:2px solid #f0e8f5;padding-top:14px}.lesson-bottom span{font-size:12px;color:#b195c2;font-weight:900}.lesson-bottom .ui-icon{color:#b397c6}.lesson-modern{background:#f5edff;border-color:#dec7f2;box-shadow:0 5px 0 #e0d0ee}.lesson-modern .lesson-type-pill{background:#e9d8ff;color:#b190ce;border-color:#ddc5ee}.lesson-done{background:#eaf8ef;border-color:#c6e7d2;box-shadow:0 5px 0 #cbe5d2}.lesson-done .lesson-bottom span,.lesson-done .lesson-bottom .ui-icon{color:#72af8a}
.panel,.modal{background:#fff;border:2px solid #e6d8ef;color:#756086;border-radius:26px;box-shadow:0 6px 0 #e7ddec;padding:32px}.panel p,.modal p{color:#9981ab}.learning-panel h2{color:#8e65aa;font-size:30px;font-weight:1000}.learning-panel p{font-size:18px;color:#9b84ac}.learning-panel .eyebrow{color:#bfa0d1}.learning-goal{border-color:#eee4f5}.learning-goal b{color:#7eaf9e;font-size:11px}.learning-goal p{color:#8caf9f;font-size:15px}.learning-header span{color:#b79ec6;font-size:13px}.takeaway{background:#f5effb;border:2px solid #e8d8f2;border-left:5px solid #c4a0df;border-radius:15px;color:#b194c3;font-size:16px}.flashcard{background:#f2e4ff;border:2px solid #d6baee;color:#b38aca;border-radius:22px;box-shadow:0 7px 0 #d8c1e8,inset 0 3px #fff8;font-size:21px;font-weight:1000}.flashcard small{color:#c2a2d2;font-size:12px}.option{background:#fff;border:2px solid #e6d9ed;color:#a68ab7;border-radius:18px;box-shadow:0 5px 0 #e5d9ea;font-size:17px;font-weight:800;padding:17px 19px}.option:hover{background:#faf4ff;border-color:#d1ace8;transform:translateY(-2px);box-shadow:0 7px 0 #dfc7ec}.option:active{transform:translateY(4px);box-shadow:0 1px 0 #d8b9e9}.option .letter{background:#f1e5f7;color:#bb9dce;border:2px solid #e5d1ef;border-radius:10px;font-size:13px;width:34px;height:34px;box-shadow:0 2px 0 #e0cbea}.option.selected{background:#efe0fd;border:2px solid #b788d7;color:#a171bc;box-shadow:0 4px 0 #c8a6de}.option.selected .letter{background:#b589d8;color:white;border-color:#c39de1}.question-actions{border-color:#efe5f5;padding-top:20px}.rubric{color:#b8a1c5;font-size:13px}.feedback{background:#e9f7ed;border:2px solid #c6e3ce;color:#90b99b;font-size:16px}.feedback b{color:#73ac87;font-size:19px}.feedback.error{background:#fff0db;border-color:#f4dbb8;color:#c6a37c}.feedback.error b{color:#cfa371}.short-input{background:#fdfaff;color:#a885ba;border:2px solid #e6d2f0;font-size:17px;border-radius:16px}.short-input::placeholder{color:#cfb4dc}.order-item{background:#fff;border:2px solid #ecdff4;color:#b193c3;font-size:16px;border-radius:15px}.order-item button{background:#f0e0fa;color:#ba96d1;border:2px solid #e3caf0;box-shadow:0 3px 0 #dfc6ed;min-height:35px;min-width:35px}.mock-message{background:#f2e9fa;border:2px solid #e0cdec;border-radius:21px}.mock-message .sender{color:#c0a6cf;font-size:13px}.mock-message .bubble{background:#fff;border:2px solid #edddf5;color:#b49ac5;font-size:17px}.mock-message .bubble button{background:#fff0d8;border:2px dashed #e6c391;color:#caa271;font-size:15px}.mock-message .bubble button.selected{background:#eedafc;color:#b191ca;border:3px solid #c9a6e2}.timer{background:#ffefc1;border:2px solid #f5d890;color:#c1a05e!important;font-size:13px!important;border-radius:12px}.exam-info div{background:#f5edfd;border:2px solid #e8d7f6;border-radius:20px}.exam-info strong{color:#bea1d5;font-size:34px;font-weight:1000}.exam-info small{color:#bea7cb;font-size:13px}.exam-map button{background:#fff;border:2px solid #e5d4ef;color:#b798ca;box-shadow:0 3px 0 #e3d3eb;border-radius:9px}.exam-map button.answered{background:#e7f5ed;color:#9abdac;border-color:#cfe5d9}.exam-map button.current{background:#c4a2e3;color:#fff;border-color:#d7bbee}.score{color:#ae8bc9}.notice{background:#fff5d8;border:2px solid #f5e2af;color:#bea576;font-size:14px;border-radius:17px}.notice>.ui-icon{color:#d0af68}.badge{background:#fff;border:2px solid #e7d8f0;border-radius:21px;box-shadow:0 4px 0 #e6d7ed}.badge p{color:#ba9dc9;font-size:14px}.badge.locked{opacity:.5}
.modal-overlay{background:#47304d80;backdrop-filter:blur(5px)}.modal{box-shadow:0 10px 0 #c9afd9,0 25px 80px #41205036}.modal-head h2{color:#a37db9;font-weight:1000;font-size:27px}.modal .close{background:#f3e8fa;border:2px solid #e4d0ef;color:#c5a6d6;border-radius:13px}.modal p{font-size:16px}.field{color:#b69ac6;font-size:14px;font-weight:900}.field input,.field select{background:#fdfaff;color:#c0a4cf;border:2px solid #e6d4ef;border-radius:14px;font-size:16px}.field input::placeholder{color:#d4bddf}.check-line{color:#c0a6ce;font-size:13px}.check-line input{accent-color:#b997d0}.form-error{background:#fff0e1;border:2px solid #f2d3b5;color:#cea883;font-size:14px}.sources-list a{color:#b898cb;border-color:#eedff7;font-size:15px}.sources-list a:hover{color:#9773b1}#toast{background:#fff;border:2px solid #dec7ee;color:#b293c7;box-shadow:0 5px 0 #d9c0e9;border-radius:15px;font-weight:900}
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/* Final contrast tokens: keep the soft surfaces, use readable text. */
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/* Small labels stay readable; saturated accents carry the buttons. */
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@media print{.drabuff-top,.footer-logo{display:none!important}.certificate{box-shadow:none;color:#675738}.workspace{margin:0;width:100%}}
.sidebar nav a .nav-compact{display:none}
@media(max-width:700px){.sidebar nav{position:static;height:auto;min-height:80px;padding:9px 4px max(10px,env(safe-area-inset-bottom));align-items:stretch;gap:3px}.sidebar nav a{width:auto;flex:1;min-width:0;min-height:59px;padding:8px 1px;gap:5px;border:2px solid transparent;border-radius:14px;justify-content:center;flex-direction:column}.sidebar nav a .nav-wide{display:none}.sidebar nav a .nav-compact,.sidebar nav a[data-nav=exam] .nav-compact{display:block;font-size:9px;font-weight:1000;line-height:1.3;white-space:normal;text-align:center}.sidebar nav a .ui-icon{width:22px;height:22px;color:#9a85ac}.sidebar nav a.active{background:#f1e7ff;border-color:#d8c6ed;box-shadow:0 3px 0 #d8c6ed;color:#8054b4}.sidebar nav a.active .ui-icon{color:#8054b4}}
@media(max-width:700px){.sidebar{height:auto;min-height:80px;padding:0;display:block;overflow:visible;background:#fffdfb}.sidebar nav{margin:0;width:100%;min-height:80px}.sidebar .brand,.sidebar .side-label,.sidebar .side-helper,.sidebar .powered{display:none}}

@media(max-width:700px){.sidebar nav a .nav-compact,.sidebar nav a[data-nav=exam] .nav-compact{white-space:nowrap;letter-spacing:-.1px}}