:root{--bg:#06111e;--bg2:#09182a;--panel:#0d1c2f;--panel2:#11243a;--line:rgba(255,255,255,.08);--text:#f4f8ff;--muted:#91a7c4;--accent:#4ce0b3;--accent2:#6ea8ff;--danger:#ff6f7d;--warn:#ffc966;--shadow:0 18px 60px rgba(0,0,0,.28);--r:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:radial-gradient(circle at 10% 0,rgba(76,224,179,.11),transparent 28%),radial-gradient(circle at 90% 10%,rgba(110,168,255,.11),transparent 26%),linear-gradient(180deg,var(--bg),#071523 60%,#08192b);color:var(--text);min-height:100vh}button,input,textarea,select{font:inherit}button{cursor:pointer}.hidden{display:none!important}.shell{min-height:100vh;display:grid;grid-template-columns:250px minmax(0,1fr)}.sidebar{height:100vh;position:sticky;top:0;border-right:1px solid var(--line);background:rgba(5,14,25,.82);backdrop-filter:blur(22px);padding:22px 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h3{margin:8px 0}.sim-card p{color:var(--muted);font-size:13px;min-height:42px}.admin-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:16px}.form-card{padding:20px}.field{display:grid;gap:6px;margin-bottom:12px}.field label{font-size:12px;color:#c7d7ea;font-weight:800}.field input,.field textarea,.field select{width:100%;background:#08182a;color:#edf5ff;border:1px solid var(--line);border-radius:12px;padding:11px;outline:none}.field textarea{min-height:100px;resize:vertical}.field input:focus,.field textarea:focus,.field select:focus{border-color:rgba(76,224,179,.46)}.admin-table{width:100%;border-collapse:collapse;font-size:12px}.admin-table th,.admin-table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.admin-table th{color:#a9bdd5}.tutor-layout{display:grid;grid-template-columns:.7fr 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var(--line);border-radius:22px;box-shadow:var(--shadow);padding:22px;position:relative}.modal-close{position:absolute;right:14px;top:12px;border:0;background:transparent;color:#b9c8da;font-size:28px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;padding:4px;background:#081725;border:1px solid var(--line);border-radius:13px;margin-bottom:16px}.auth-tabs button{border:0;background:transparent;color:var(--muted);padding:9px;border-radius:10px;font-weight:800}.auth-tabs button.active{background:rgba(76,224,179,.1);color:#dffff4}.auth-modal #demoLogin{margin-top:16px}.auth-modal .auth-note{margin-top:14px}.auth-note{text-align:center;color:var(--muted);font-size:11px;line-height:1.5}.auth-note code{color:#c6d7eb}.toast{position:fixed;right:24px;bottom:24px;background:#10243a;border:1px solid var(--line);box-shadow:var(--shadow);padding:12px 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@media(max-width:720px){.shell{display:block}.sidebar{display:none}.main{padding:16px 13px 88px}.topbar{align-items:flex-start}.topbar h1{font-size:24px}.hero{padding:22px;min-height:auto}.hero h2{font-size:31px}.stats,.module-grid,.sim-grid{grid-template-columns:1fr}.ecg-wrap{height:330px}.ecg-wrap.enhanced{height:420px;min-height:420px}.viewer-tools{gap:6px}.viewer-tools .chip{padding:8px 9px;font-size:11px}.mobile-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:10px;right:10px;bottom:10px;z-index:50;background:rgba(7,17,30,.92);backdrop-filter:blur(18px);border:1px solid var(--line);border-radius:17px;padding:6px;box-shadow:var(--shadow)}.mobile-nav button{border:0;background:transparent;color:var(--muted);padding:8px 3px;border-radius:11px;font-size:11px}.mobile-nav button.active{background:rgba(76,224,179,.09);color:var(--accent)}.actions .hide-mobile{display:none}.skill{grid-template-columns:82px 1fr 38px}.admin-table{font-size:10px}.admin-table th,.admin-table td{padding:7px}.chat{height:540px}}

/* Biblioteca educacional vetorial de ECG */
.boot-loader{min-height:100vh;display:grid;place-content:center;justify-items:center;gap:10px;background:radial-gradient(circle,rgba(76,224,179,.11),transparent 34%);color:var(--text)}
.boot-loader .loader-heart{width:72px;height:72px;border-radius:24px;display:grid;place-items:center;font-size:34px;color:#04121a;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 18px 50px rgba(76,224,179,.18);animation:beat 1.15s infinite}
.boot-loader span{font-size:12px;color:var(--muted)}
.training-filter{padding:12px 14px;margin-bottom:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.training-filter label{font-size:12px;font-weight:900;color:#c9d9eb}
.training-filter select{min-width:240px;flex:1;background:#08182a;color:#edf5ff;border:1px solid var(--line);border-radius:12px;padding:10px 11px;outline:none}
.real-badge{margin-left:auto;color:#bdf8e8;background:rgba(76,224,179,.12)}
.ecg-source{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 3px 0;color:var(--muted);font-size:11px}
.ecg-source a{color:#9ec5ff;text-decoration:none;margin-left:auto}.ecg-source a:hover{text-decoration:underline}
.image-error{height:100%;width:100%;display:grid;place-content:center;text-align:center;gap:6px;padding:24px;color:#25354a;background:#fff}
.image-error strong{color:#13233a}.image-error span{font-size:12px;max-width:420px}
.ecg-wrap.image-failed{background:#fff}
@media(max-width:720px){.training-filter{align-items:stretch}.training-filter select{min-width:100%;width:100%}.real-badge{margin-left:0;width:max-content}.ecg-source a{margin-left:0;width:100%}}

/* ECG Lab v2 — visualizador SVG vetorial */
.vector-viewer{display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff;cursor:grab;touch-action:none;position:relative}
.vector-viewer.dragging{cursor:grabbing}
.vector-viewer #ecgVectorImage{width:100%;height:100%;object-fit:contain;display:block;transform-origin:center center;will-change:transform;user-select:none;-webkit-user-drag:none;pointer-events:none;transition:transform .06s linear;background:#fff}
.image-error-vector{display:none;place-content:center;text-align:center;gap:7px;color:#21344a;background:#fff;position:absolute;inset:0;z-index:2}
.image-error-vector span{font-size:12px;color:#607086}
.vector-viewer.image-failed #ecgVectorImage{display:none}
.vector-viewer.image-failed .image-error-vector{display:grid}
.vector-viewer:fullscreen{width:100vw;height:100vh;max-width:none;max-height:none;border-radius:0;background:#fff;padding:12px}
.vector-viewer:fullscreen #ecgVectorImage{width:100%;height:100%}
@media(min-width:1200px){.ecg-wrap.enhanced.vector-viewer{height:min(72vh,680px);min-height:560px}}
@media(max-width:720px){.ecg-wrap.enhanced.vector-viewer{height:430px;min-height:430px}.viewer-help{font-size:11px}.ecg-source{font-size:10px}.vector-viewer .float-tag{font-size:10px}}

/* Adaptive CAT-style training */
.adaptive-panel{padding:14px 16px;margin-bottom:14px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;background:linear-gradient(135deg,rgba(76,224,179,.09),rgba(110,168,255,.06))}
.adaptive-main{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.adaptive-main>div:first-child{display:grid;gap:3px}.adaptive-main strong{font-size:17px}.adaptive-main small{color:var(--muted);font-size:11px}
.adaptive-dots{display:flex;gap:6px;align-items:center}.adaptive-dot{display:block;width:28px;height:7px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.06)}.adaptive-dot.on{background:linear-gradient(90deg,var(--accent),var(--accent2));border-color:transparent;box-shadow:0 0 14px rgba(76,224,179,.13)}
.adaptive-stats{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:11px}.adaptive-stats span{padding:7px 9px;border:1px solid var(--line);border-radius:11px;background:rgba(5,16,29,.34)}.adaptive-stats b{color:#fff;font-size:13px;margin-right:3px}
.btn:disabled,.answer:disabled{cursor:not-allowed;opacity:.62;transform:none;filter:none}.answer.correct:disabled,.answer.wrong:disabled{opacity:1}
@media(max-width:720px){.adaptive-panel{align-items:stretch}.adaptive-main,.adaptive-stats{width:100%}.adaptive-main{justify-content:space-between}.adaptive-stats{display:grid;grid-template-columns:repeat(3,1fr)}.adaptive-stats span{text-align:center}.adaptive-stats .btn{grid-column:1/-1}.adaptive-dot{width:22px}}

/* Study Trail v3 — fully unlocked, referenced content and clinical cases */
.study-hero{display:grid;grid-template-columns:1.5fr .7fr;gap:24px;align-items:center;margin-bottom:16px;background:linear-gradient(135deg,rgba(76,224,179,.09),rgba(110,168,255,.06))}.study-hero h2{font-size:30px;margin:10px 0 8px}.study-hero p{color:var(--muted);line-height:1.65;max-width:780px}.study-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.study-kpis div{padding:14px 8px;border-radius:15px;text-align:center;border:1px solid var(--line);background:rgba(5,16,29,.38)}.study-kpis strong{display:block;font-size:25px;color:#fff}.study-kpis span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.study-module{min-height:210px}.study-module-top{display:flex;justify-content:space-between;gap:8px;align-items:center}.unlocked{font-size:11px;font-weight:900;color:#8ff0d0}.study-module-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}.study-module-meta span,.lesson-tags span{padding:6px 8px;border-radius:9px;background:rgba(255,255,255,.04);border:1px solid var(--line);font-size:10px;color:var(--muted)}.copyright-note{margin-top:16px}.copyright-note p{margin-bottom:0;color:var(--muted);font-size:12px;line-height:1.6}.study-breadcrumb{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;margin-bottom:18px}.study-breadcrumb h2{margin:7px 0 5px;font-size:29px}.study-breadcrumb p{margin:0;color:var(--muted);line-height:1.55}.study-lesson-list{display:grid;gap:12px}.study-lesson-card{padding:15px;display:grid;grid-template-columns:54px 1fr auto;gap:14px;align-items:center}.study-lesson-index{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(110,168,255,.1);color:#b9d4ff;font-weight:900}.study-lesson-body p{margin:5px 0 9px;color:var(--muted);font-size:12px;line-height:1.5}.study-lesson-title{display:flex;align-items:center;gap:10px;justify-content:space-between}.study-lesson-title h3{margin:0;font-size:15px}.lesson-tags{display:flex;gap:6px;flex-wrap:wrap}.study-detail-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;align-items:start}.study-section-block{margin-top:18px;padding-top:17px;border-top:1px solid var(--line)}.study-section-block h4{margin:0 0 8px}.study-section-block ul,.study-pitfalls ul,.study-reference-list,.case-layout ul{padding-left:20px;color:#cbd9e8;line-height:1.65}.study-objectives{list-style:none;padding:0;display:grid;gap:8px}.study-objectives li{padding:10px 12px;border:1px solid rgba(76,224,179,.14);background:rgba(76,224,179,.05);border-radius:12px;color:#dff9ef}.study-pitfalls{margin-top:16px;background:linear-gradient(180deg,rgba(255,201,102,.06),rgba(14,29,48,.92))}.study-video-list{display:grid;gap:10px;margin-top:12px}.study-video-card{display:grid;grid-template-columns:36px 1fr;gap:10px;padding:12px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.025)}.video-icon{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:#ff364c;color:white;font-size:12px}.study-video-card small{color:#9eb4cd}.study-video-card h4{margin:3px 0 5px;font-size:13px}.study-video-card p{margin:0 0 8px;color:var(--muted);font-size:11px;line-height:1.45}.study-video-card a,.study-reference-list a{color:#9fc6ff;text-decoration:none;font-size:11px;font-weight:800}.study-video-card a:hover,.study-reference-list a:hover{text-decoration:underline}.study-source-note{font-size:11px;line-height:1.5}.cases-section{margin-top:16px}.clinical-cases-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.clinical-case-card{padding:14px;min-height:190px;display:flex;flex-direction:column}.clinical-case-card h4{margin:10px 0 6px;font-size:13px}.clinical-case-card p{color:var(--muted);font-size:11px;line-height:1.45;flex:1}.case-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.study-difficulty{display:flex;gap:3px}.study-difficulty i{width:8px;height:5px;border-radius:99px;background:rgba(255,255,255,.1)}.study-difficulty i.on{background:var(--accent)}.case-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:16px;align-items:start}.case-layout main{display:grid;gap:16px}.case-ecg-card{padding:14px;background:#fff}.case-ecg-head{display:flex;justify-content:space-between;gap:10px;align-items:center;color:#102030;margin-bottom:10px}.case-ecg-head small{display:block;color:#607187;font-size:10px;margin-top:2px}.case-ecg-image{width:100%;display:block;border-radius:10px;border:1px solid #f1a6ae;background:#fff}.case-info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.case-info-grid>div{padding:12px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.025)}.case-info-grid small{font-size:10px;text-transform:uppercase;letter-spacing:.45px;color:#8fa7c0;font-weight:900}.case-info-grid p{margin:6px 0 0;color:#d8e4f0;line-height:1.55}.case-question{position:sticky;top:18px}.case-question>p{color:var(--muted);line-height:1.55}.case-answer{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}.case-answer h4{font-size:18px;color:#bff7e6;margin:0 0 7px}.case-answer>p{color:#d9e7f3;line-height:1.55}.case-trap,.case-pearl{padding:11px;border-radius:12px;margin-top:10px}.case-trap{background:rgba(255,201,102,.08);border:1px solid rgba(255,201,102,.14)}.case-pearl{background:rgba(76,224,179,.07);border:1px solid rgba(76,224,179,.14)}.case-trap p,.case-pearl p{margin:5px 0 0;color:#cddceb;font-size:11px;line-height:1.5}
@media(max-width:1200px){.clinical-cases-grid{grid-template-columns:repeat(3,1fr)}.study-detail-grid,.case-layout{grid-template-columns:1fr}.case-question{position:static}.study-hero{grid-template-columns:1fr}}
@media(max-width:720px){.study-kpis{grid-template-columns:repeat(3,1fr)}.study-kpis strong{font-size:20px}.study-lesson-card{grid-template-columns:42px 1fr}.study-lesson-card>.btn{grid-column:1/-1}.study-lesson-index{width:40px;height:40px}.study-breadcrumb{grid-template-columns:1fr}.clinical-cases-grid{grid-template-columns:1fr}.case-info-grid{grid-template-columns:1fr}.case-ecg-card{padding:8px}.study-hero h2{font-size:25px}}

/* Language selection */
.language-gate{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:22px;background:radial-gradient(circle at 20% 10%,rgba(76,224,179,.14),transparent 30%),radial-gradient(circle at 85% 15%,rgba(110,168,255,.16),transparent 28%),linear-gradient(145deg,#06111e,#081b2e 65%,#071421);backdrop-filter:blur(20px)}
.language-gate.hidden,.language-selected .language-gate{display:none!important}.language-card{width:min(520px,100%);padding:32px;border:1px solid rgba(255,255,255,.1);border-radius:28px;background:linear-gradient(180deg,rgba(17,37,59,.96),rgba(8,24,40,.98));box-shadow:0 32px 100px rgba(0,0,0,.42);text-align:center}.language-brand{display:flex;justify-content:center;align-items:center;gap:11px;margin-bottom:24px}.language-brand>div:last-child{text-align:left}.language-brand strong{display:block;font-size:20px}.language-brand small{color:var(--muted)}.language-icon{width:62px;height:62px;border-radius:20px;margin:0 auto 18px;display:grid;place-items:center;font-size:29px;background:rgba(110,168,255,.09);border:1px solid rgba(110,168,255,.18)}.language-card h1{margin:0;font-size:29px;line-height:1.25}.language-card h1 span{color:#b6c9e1;font-size:21px;font-weight:600}.language-card>p{color:var(--muted);line-height:1.55;margin:12px 0 22px}.language-card>p span{font-size:13px}.language-options{display:grid;gap:11px}.language-options button{width:100%;border:1px solid var(--line);border-radius:17px;padding:15px 17px;background:rgba(255,255,255,.035);color:var(--text);display:grid;grid-template-columns:46px 1fr 22px;align-items:center;gap:12px;text-align:left;transition:.18s ease}.language-options button:hover{transform:translateY(-2px);border-color:rgba(76,224,179,.42);background:rgba(76,224,179,.075)}.language-options .flag{font-size:28px}.language-options strong{display:block;font-size:16px}.language-options small{display:block;color:var(--muted);margin-top:2px}.language-options b{color:var(--accent);font-size:20px}.language-note{display:block;margin-top:22px;color:#7189a6}.language-switch-btn{min-width:58px}.language-pending{overflow:hidden}
@media(max-width:560px){.language-card{padding:25px 18px}.language-card h1{font-size:25px}.language-card h1 span{font-size:18px}}