:root{--green:#2f9e41;--green-dark:#1f7430;--green-soft:#eaf6ec;--red:#cd191e;--ink:#17211a;--muted:#647067;--line:#dce5de;--bg:#f6f8f6;--white:#fff;--shadow:0 16px 38px rgba(22,42,27,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}a{color:inherit}.container{width:min(1120px,calc(100% - 32px));margin-inline:auto}.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.topbar-inner{height:66px;display:flex;align-items:center;justify-content:space-between}.brand{text-decoration:none;font-size:1.05rem;font-weight:800;letter-spacing:.02em}.brand span{color:var(--green)}.teacher{font-size:.9rem;color:var(--muted)}.teacher strong{color:var(--ink)}
.hero{padding:70px 0 38px}.eyebrow,.mini-label{font-size:.78rem;font-weight:800;letter-spacing:.08em;color:var(--green-dark)}h1{font-size:clamp(2.1rem,5vw,4rem);line-height:1.03;max-width:850px;margin:.55rem 0 1rem;letter-spacing:-.035em}.lead{font-size:1.12rem;color:var(--muted);max-width:760px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.button{appearance:none;border:0;border-radius:10px;padding:12px 18px;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.button.primary{background:var(--green);color:white}.button.primary:hover{background:var(--green-dark)}.button.secondary{background:var(--ink);color:white}.button.ghost{background:white;border:1px solid var(--line)}.button.full{width:100%;margin-top:10px}.button[disabled]{opacity:.55;cursor:not-allowed}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:28px}.stats article{background:white;border:1px solid var(--line);border-radius:14px;padding:18px}.stats span{display:block;font-size:1.6rem;font-weight:850}.stats small{color:var(--muted)}.next-card,.panel{background:white;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.next-card{padding:22px;display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:28px;border-left:5px solid var(--green)}.next-card[hidden]{display:none}.next-card h2{margin:.2rem 0;font-size:1.25rem}.next-card p{margin:0;color:var(--muted)}.panel{padding:28px;margin-bottom:48px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-heading h2{font-size:1.75rem;margin:.2rem 0 0}.section-heading p{color:var(--muted);margin:0}.badge{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:.76rem;font-weight:800}.badge.soft{background:var(--green-soft);color:var(--green-dark)}.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:22px}.info-grid div{border-top:1px solid var(--line);padding-top:12px}.info-grid span{display:block;font-size:.78rem;color:var(--muted)}.info-grid strong{display:block;margin-top:3px}
.module-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;padding-bottom:70px}.module-card{background:white;border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-direction:column;min-height:245px}.module-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.module-number{font-size:.78rem;font-weight:850;color:var(--muted)}.module-kind{font-size:.72rem;font-weight:800;padding:5px 9px;border-radius:999px;background:#f1f4f2}.module-card h3{margin:13px 0 7px;font-size:1.22rem}.module-card p{color:var(--muted);margin:.3rem 0}.module-date{font-size:.86rem}.module-actions{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.state{font-size:.8rem;font-weight:800}.state.open{color:var(--green-dark)}.state.locked{color:#7b837e}.module-card.current{border-color:var(--green);box-shadow:0 0 0 3px rgba(47,158,65,.10)}.module-card.assessment{border-top:4px solid var(--red)}
footer{border-top:1px solid var(--line);background:white;color:var(--muted);padding:26px 0;font-size:.9rem}.checkin-dialog{border:0;padding:0;border-radius:20px;width:min(460px,calc(100% - 24px));box-shadow:0 28px 90px rgba(0,0,0,.28)}.checkin-dialog::backdrop{background:rgba(15,28,19,.55);backdrop-filter:blur(3px)}.checkin-card{position:relative;padding:30px;margin:0}.checkin-card h2{font-size:2rem;margin:.8rem 0 .4rem;color:#183b63}.checkin-card>p{color:#61718a}.checkin-pill{display:inline-block;background:#eef5fb;color:#24598f;border-radius:999px;padding:7px 11px;font-size:.76rem;font-weight:850}.checkin-card label{display:block;font-weight:800;margin:15px 0 6px}.checkin-card select,.checkin-card input{width:100%;font:inherit;padding:12px 13px;border:1px solid #b8c9df;border-radius:10px;background:white;outline:none}.checkin-card select:focus,.checkin-card input:focus{border-color:#245c9e;box-shadow:0 0 0 4px rgba(36,92,158,.10)}.close{position:absolute;right:18px;top:14px;border:0;background:transparent;font-size:1.7rem;cursor:pointer}.status{min-height:1.25em;font-size:.88rem;font-weight:700}.status.error{color:#a51418}.privacy-note{font-size:.75rem!important;color:#6c7787!important;margin-bottom:0;text-align:center}
.lesson-shell{min-height:100vh}.lesson-header{background:white;border-bottom:1px solid var(--line)}.lesson-nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.lesson-main{padding:38px 0 70px}.lesson-hero{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:start;margin-bottom:24px}.lesson-hero h1{font-size:clamp(2rem,4vw,3.2rem);margin:.45rem 0 .7rem}.lesson-meta{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:6px 10px;border-radius:999px;background:white;border:1px solid var(--line);font-size:.78rem;font-weight:800}.checkin-ok{background:var(--green-soft);border:1px solid #cce8d1;border-radius:14px;padding:14px 16px;font-size:.88rem}.lesson-grid{display:grid;grid-template-columns:1fr 320px;gap:18px}.lesson-section,.sidebar-card{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:16px}.lesson-section h2,.sidebar-card h2{margin-top:0}.lesson-section ul,.sidebar-card ul{padding-left:20px}.code-wrap{position:relative;background:#111713;border-radius:14px;overflow:hidden}.code-title{display:flex;align-items:center;justify-content:space-between;color:#dfe8e1;background:#1c2620;padding:10px 14px;font-size:.8rem;font-weight:800}.copy-code{border:1px solid #4f5f54;background:transparent;color:white;border-radius:7px;padding:5px 9px;cursor:pointer}.code-wrap pre{margin:0;padding:20px;overflow:auto;color:#e7f5ea;font:14px/1.58 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;tab-size:4}.practice-box{border-left:4px solid var(--green);background:#f7fbf8}.format-note{color:var(--muted);font-size:.94rem}.locked-page{display:grid;place-items:center;min-height:100vh;padding:24px}.locked-card{width:min(600px,100%);background:white;border:1px solid var(--line);border-radius:18px;padding:34px;text-align:center;box-shadow:var(--shadow)}
@media(max-width:800px){.stats,.info-grid{grid-template-columns:repeat(2,1fr)}.module-grid,.lesson-grid{grid-template-columns:1fr}.lesson-hero{grid-template-columns:1fr}.next-card{align-items:flex-start;flex-direction:column}.section-heading{align-items:flex-start;flex-direction:column}.lesson-grid aside{order:-1}}@media(max-width:520px){.hero{padding-top:48px}.stats{grid-template-columns:1fr 1fr}.module-grid{grid-template-columns:1fr}.panel{padding:20px}.checkin-card{padding:24px}.teacher{font-size:.82rem}}

/* Portal 2026/2 — LabDev, Arena e Modo Docente */
.top-links{display:flex;align-items:center;gap:18px}.top-links>a{font-size:.9rem;font-weight:800;text-decoration:none;color:var(--green-dark)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}.footer-inner a{font-size:.82rem;color:var(--muted)}
.learning-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.learning-flow article{border:1px solid var(--line);border-radius:16px;padding:20px;background:#fbfdfb}.learning-flow article>span{font-size:1.7rem}.learning-flow h3{margin:.5rem 0 .35rem}.learning-flow p{margin:0;color:var(--muted)}
.module-arena-note{font-size:.82rem!important;color:#49574e!important;font-weight:700}.module-button-row{display:flex;gap:7px;align-items:center}.button.tiny{padding:8px 11px;border-radius:8px;font-size:.76rem}.arena-button{background:#111713;color:#fff}.arena-button:hover{background:#26342a}.danger-outline{background:#fff;border:1px solid var(--red);color:var(--red)}
.labdev-box{border-left:5px solid var(--green)}.labdev-heading{display:flex;align-items:center;gap:10px;color:var(--green-dark);font-weight:800;margin-bottom:8px}.labdev-badge{background:var(--green-soft);padding:5px 9px;border-radius:999px;font-size:.76rem}.arena-callout{border:1px solid #b9d8bf;background:linear-gradient(180deg,#fbfefb,#f0f8f2)}.arena-callout h2{margin:.4rem 0}.arena-rules-inline{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.arena-rules-inline span{font-size:.76rem;font-weight:800;border:1px solid #cfddd1;border-radius:999px;padding:5px 9px;background:#fff}.lesson-nav-actions{display:flex;gap:8px;align-items:center}.teacher-preview{background:#fff4d9;border-color:#eed28f}

/* Arena */
@media print{body.arena-page{display:none!important}}

/* Ranking */
.ranking-main{padding:46px 0 70px}.ranking-hero{margin-bottom:24px}.ranking-hero h1{font-size:clamp(2rem,5vw,3.5rem);margin:.4rem 0}.ranking-hero p{color:var(--muted)}.ranking-tabs{display:flex;gap:10px;flex-wrap:wrap}.ranking-tabs select{font:inherit;border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px 12px;min-width:280px}.ranking-board{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}.ranking-head,.ranking-row{display:grid;grid-template-columns:100px 1fr 130px 130px;gap:12px;align-items:center;padding:15px 20px}.ranking-head{background:#17211a;color:#fff;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;font-weight:800}.ranking-row{border-bottom:1px solid #edf1ee}.ranking-row:last-child{border-bottom:0}.ranking-position{font-size:1.2rem;font-weight:900}.ranking-empty-board{padding:38px;text-align:center;color:var(--muted)}

/* Modo docente */
.teacher-main{padding:46px 0 80px}.teacher-login{max-width:620px;margin:20px auto}.teacher-login h1{font-size:2.5rem;margin:.4rem 0}.teacher-login-form label{font-weight:800;display:block;margin:14px 0 6px}.teacher-login-form input{width:100%;font:inherit;border:1px solid var(--line);border-radius:10px;padding:12px;margin-bottom:12px}.teacher-panel-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.teacher-panel-heading h1{margin:.3rem 0;font-size:2.5rem}.teacher-note{background:#fff9e8;border:1px solid #ead9a7;border-radius:14px;padding:16px 18px;margin-bottom:14px}.teacher-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}.teacher-module-list{display:grid;gap:14px}.teacher-module-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.teacher-module-top{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.teacher-module-top h2{margin:.35rem 0 .2rem;font-size:1.2rem}.teacher-module-top p{margin:0;color:var(--muted)}.teacher-control-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0}.teacher-control-grid>div{border:1px solid #edf1ee;border-radius:10px;padding:10px}.teacher-control-grid span{display:block;color:var(--muted);font-size:.73rem}.teacher-control-grid strong{display:block;margin-top:3px}.teacher-card-actions{display:flex;gap:8px;flex-wrap:wrap}

@media(max-width:900px){.arena-layout{grid-template-columns:1fr}.arena-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:12px}.learning-flow{grid-template-columns:1fr}.teacher-control-grid{grid-template-columns:repeat(2,1fr)}.ranking-head,.ranking-row{grid-template-columns:70px 1fr 90px 100px}.arena-main-card{min-height:auto}}
@media(max-width:600px){.top-links{gap:10px}.top-links>a{display:none}.footer-inner{align-items:flex-start;flex-direction:column}.arena-header-inner{align-items:flex-start;flex-direction:column;padding:22px 0}.arena-clock{width:100%}.arena-layout{padding-top:14px}.arena-main-card{padding:20px}.arena-sidebar{grid-template-columns:1fr}.question-prompt{font-size:1.08rem}.ranking-head,.ranking-row{grid-template-columns:50px 1fr 70px 80px;padding:12px 10px;font-size:.82rem}.ranking-head{font-size:.65rem}.teacher-module-top{flex-direction:column}.teacher-control-grid{grid-template-columns:1fr 1fr}.module-actions{align-items:flex-start;flex-direction:column}.module-button-row{width:100%}.module-button-row .button{flex:1}}


/* Didactic content v3 */
.lesson-intro{border-left:5px solid var(--green)}
.content-block{scroll-margin-top:86px}
.content-block>p{font-size:1rem;line-height:1.72;color:#344239}
.content-block h2{font-size:1.55rem;margin:.35rem 0 .75rem}
.concept-list,.concept-steps{line-height:1.7}.concept-list li,.concept-steps li{margin:.35rem 0}
.concept-code{margin-top:16px}.concept-code+.observe-box{margin-top:14px}
.observe-box{background:#f3f8f4;border:1px solid #d4e8d8;border-radius:12px;padding:14px 16px;margin-top:16px}.observe-box strong{color:var(--green-dark)}.observe-box ul{margin-bottom:0}
.concept-diagram{background:#fbfcfb;border:1px dashed #aebcb2;border-radius:12px;padding:16px;margin:16px 0;overflow:auto}.concept-diagram pre{margin:0;font:14px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;color:#243229}
.teaching-callout{margin-top:16px;border-left:4px solid #d6a61d;background:#fffaf0;padding:13px 15px;border-radius:0 10px 10px 0;font-weight:700;color:#5b4a18}
.sticky-card{position:sticky;top:82px}.lesson-toc{display:flex;flex-direction:column;gap:7px}.lesson-toc a{text-decoration:none;padding:8px 10px;border-radius:8px;color:#3e4b42;font-size:.88rem}.lesson-toc a:hover{background:var(--green-soft);color:var(--green-dark)}
.moodle-box{border-top:4px solid #5078a8;background:#fbfdff}.moodle-box h2{margin:.35rem 0 .55rem}.moodle-box p{color:#46576c}.moodle-button{background:#315f94;color:#fff}.moodle-pending{display:flex;flex-direction:column;gap:3px;background:#eef4fa;border:1px solid #d3e1ef;border-radius:11px;padding:13px 14px;color:#31506f}.moodle-pending span{font-size:.88rem;color:#526b83}
.labdev-box{border-top:4px solid #222}.labdev-heading{display:flex;align-items:center;gap:10px;margin-bottom:8px}.labdev-badge{background:#1b211d;color:#fff;border-radius:999px;padding:5px 9px;font-size:.76rem;font-weight:850}
.arena-callout{border-top:4px solid var(--green)}
@media(max-width:800px){.sticky-card{position:static}.lesson-toc{display:grid;grid-template-columns:1fr 1fr}}