*{box-sizing:border-box}
:root{--green:#07552f;--green2:#0a8b51;--green3:#eef7f1;--gold:#d8ad4c;--ink:#173127;--muted:#65766e;--line:#dce7e0;--red:#b53a32;--bg:#f3f7f4}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--ink)}
button,input,textarea{font:inherit}
button{cursor:pointer;border:0}
.hide{display:none!important}
.app-header{position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:12px 18px;background:linear-gradient(135deg,var(--green),var(--green2));color:#fff;box-shadow:0 2px 12px #0002}
.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:#ffffff22;font-weight:800}.brand strong,.brand small{display:block}.brand small{opacity:.85;font-size:12px}
.header-timer{font-size:18px;font-weight:800;padding:9px 12px;border-radius:12px;background:#ffffff20}
.shell{max-width:1180px;margin:0 auto;padding:24px 18px 40px}
.panel{background:#fff;border-radius:22px;box-shadow:0 8px 35px #0000000d;padding:28px;margin-bottom:18px}
.auth-panel{max-width:620px;margin:9vh auto 0}.hero{margin-bottom:22px}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.09em;font-size:11px;font-weight:800;color:#4c6d5d}
h1,h2{margin:.35rem 0 1rem;line-height:1.15}
p{color:var(--muted);line-height:1.55}
label{font-size:13px;font-weight:700}
input,textarea{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:14px;outline:none;background:#fbfdfc}
input:focus,textarea:focus{border-color:var(--green2);box-shadow:0 0 0 3px #0a8b5120}
.primary,.secondary,.danger{padding:13px 16px;border-radius:14px;font-weight:800}
.primary{background:var(--green2);color:#fff}.secondary{background:#edf4ef;color:var(--green)}.danger{background:var(--red);color:#fff}.wide{width:100%;margin-top:8px}
.feedback{min-height:22px;font-weight:700}
.panel-title{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}
.status-badge{padding:8px 10px;border-radius:999px;background:var(--green3);color:var(--green);font-size:12px;font-weight:800}
.identity-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
.identity-grid>div{padding:15px;border-radius:16px;background:var(--green3)}.identity-grid small,.identity-grid strong{display:block}.identity-grid small{color:var(--muted);margin-bottom:5px}
.exam-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:18px;align-items:start}
.question-panel{position:sticky;top:80px;background:#fff;border-radius:20px;padding:16px;box-shadow:0 8px 30px #0000000a}
.question-panel-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.question-panel-head strong{display:block;margin-top:3px}
.save-state{font-size:11px;color:#347153}.legend{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0;font-size:10px;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:4px}.dot{width:9px;height:9px;border-radius:50%;display:inline-block;border:1px solid #b6c6bd}.dot.done{background:#7bb491;border-color:#7bb491}.dot.current{background:var(--green2);border-color:var(--green2)}.dot.empty{background:#fff}.dot.doubt{background:var(--gold);border-color:var(--gold)}
.question-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;max-height:65vh;overflow:auto;padding-right:2px}
.qnav{min-height:38px;border-radius:11px;background:#f4f7f5;color:#476257;font-weight:800;border:1px solid transparent}.qnav.current{background:var(--green2);color:#fff}.qnav.done{background:#dcefe2;color:#20623f}.qnav.doubt{box-shadow:inset 0 -4px 0 var(--gold)}.qnav.empty{background:#f4f7f5}
.exam-card{background:#fff;border-radius:22px;padding:24px;box-shadow:0 8px 35px #0000000d}.exam-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}.mobile-timer{display:none}
.progress-track{height:7px;background:#eaf0ec;border-radius:999px;overflow:hidden;margin:16px 0 22px}.progress-bar{height:100%;width:0;background:var(--green2);transition:width .25s}
.stage-head{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}.q-number{font-size:13px;font-weight:800;color:#4d6e60}.q-type{font-size:11px;padding:5px 8px;border-radius:999px;background:#eff5f1;color:#4d6e60;font-weight:800}
.q-text{font-size:22px;line-height:1.45;margin:8px 0 18px}.option{display:flex;gap:12px;align-items:flex-start;padding:14px;border:1px solid var(--line);border-radius:15px;margin:10px 0;background:#fbfdfc}.option:has(input:checked){border-color:var(--green2);background:#edf8f1;box-shadow:0 0 0 2px #0a8b5115}.option input{width:auto;margin-top:3px;accent-color:var(--green2)}
.answer-input{font-size:16px}.essay-input{min-height:180px;resize:vertical}
.question-actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px;flex-wrap:wrap}
.doubt-toggle{padding:10px 12px;border-radius:12px;background:#fff7dc;color:#7a5b10;font-weight:800}.doubt-toggle.active{background:#eadca6}
.mobile-question-nav{display:none}
.submit-panel{display:flex;justify-content:space-between;align-items:center;gap:14px;background:#fff;border-radius:18px;padding:14px 16px;margin-top:15px;box-shadow:0 8px 35px #0000000a}.submit-panel strong,.submit-panel small{display:block}.submit-panel small{color:var(--muted);margin-top:3px}.button-link{display:inline-block;text-decoration:none;margin-top:12px}.center{text-align:center}.success-icon{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;margin:0 auto 15px;background:#e8f5ec;color:var(--green2);font-size:35px;font-weight:900}
.modal-backdrop{position:fixed;inset:0;background:#092217aa;display:grid;place-items:center;padding:18px;z-index:100}
.modal{max-width:450px;width:100%;background:#fff;border-radius:22px;padding:22px;box-shadow:0 22px 80px #0005}.modal-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}

@media(max-width:850px){
 .shell{padding:14px 12px 100px}
 .panel{border-radius:18px;padding:20px}
 .exam-layout{display:block}
 .question-panel{position:sticky;top:62px;z-index:25;margin-bottom:12px;padding:12px;border-radius:16px}
 .question-panel-head{gap:10px}.legend{display:none}
 .question-nav{display:flex;gap:6px;max-height:none;overflow:auto;padding-bottom:2px}
 .qnav{min-width:42px;min-height:40px}
 .exam-card{border-radius:18px;padding:18px}
 .exam-card-top{align-items:center}.mobile-timer{display:block;padding:8px 10px;background:#edf4ef;color:var(--green);border-radius:11px;font-weight:900}
 .app-header .header-timer{display:none}
 .mobile-question-nav{display:flex;gap:8px;margin:10px 0}.mobile-question-nav button{flex:1}
 .submit-panel{position:sticky;bottom:8px;z-index:24}
 .identity-grid{grid-template-columns:1fr}
 .q-text{font-size:19px}.option{padding:13px}
}
@media(max-width:520px){
 .app-header{padding:10px 12px}
 .brand strong{font-size:15px}.brand small{font-size:10px}
 .shell{padding-left:10px;padding-right:10px}
 .submit-panel{flex-direction:column;align-items:stretch}
 .submit-panel .danger{width:100%}
 .modal-actions{flex-direction:column}.modal-actions button{width:100%}
}