*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:#eef2f6;color:#172033}button,select,input{font:inherit}.hidden{display:none!important}
.home{min-height:100vh;max-width:1180px;margin:auto;padding:52px 28px}.home header{display:flex;justify-content:space-between;gap:30px;align-items:start}.eyebrow{font-size:12px;font-weight:800;letter-spacing:2px;color:#1769aa}.home h1{font-size:44px;margin:8px 0}.home header p{color:#637083;max-width:700px}.safe{background:#dff7e7;color:#18753a;border:1px solid #aee3bd;padding:9px 13px;border-radius:30px;font-size:12px;font-weight:800}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:55px}.lab-card{position:relative;text-align:left;background:white;border:1px solid #dbe2ea;border-radius:18px;padding:28px;min-height:330px;cursor:pointer;box-shadow:0 12px 35px #24354b12;transition:.2s}.lab-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px #24354b25}.lab-card .num{position:absolute;right:20px;top:18px;color:#c7d0db;font-size:30px;font-weight:800}.icon{display:grid;place-items:center;width:60px;height:60px;background:#e8f3ff;color:#1267a9;border-radius:14px;font-size:30px}.blue .icon{background:#e9efff;color:#314eb6}.purple .icon{background:#f2eaff;color:#7044a8}.lab-card h2{margin-top:32px}.lab-card p{color:#68768a;line-height:1.55}.lab-card b{display:block;margin-top:28px;color:#1769aa}.home footer{text-align:center;color:#8994a3;margin-top:55px;font-size:13px}
.lab{min-height:100vh;padding-bottom:30px}.labtop{height:58px;background:#fff;border-bottom:1px solid #d9e0e8;display:flex;align-items:center;justify-content:space-between;padding:0 24px}.labtop button{border:0;background:transparent;cursor:pointer}.labtop span{font-size:11px;font-weight:800;letter-spacing:1px;color:#18753a}.rufus-window{width:620px;margin:35px auto 15px;background:#f4f4f4;border:1px solid #999;box-shadow:0 20px 60px #17203333}.titlebar{background:#fff;padding:10px 12px;display:flex;justify-content:space-between;border-bottom:1px solid #bbb}.rufus-body{padding:18px}.rufus-body label{font-size:13px;display:block;margin:11px 0 5px}.rufus-body select,.rufus-body input{width:100%;height:34px;border:1px solid #aaa;background:#fff;padding:4px 8px}.row{display:grid;grid-template-columns:1fr 125px;gap:8px}.primary{background:#0879c9!important;color:#fff!important;border:1px solid #0665a8!important}.two{display:grid;grid-template-columns:1fr 1fr;gap:15px}.separator{border-bottom:1px solid #bbb;margin:20px 0 8px;height:10px}.separator span{background:#f4f4f4;padding-right:8px;font-size:12px;color:#555}.check{display:flex!important;align-items:center;gap:7px}.check input{width:auto}.status{font-size:12px;margin-top:18px}.progress{height:18px;border:1px solid #aaa;background:white;margin:5px 0 14px}.progress div{height:100%;width:0;background:#28a745;transition:.35s}.actions{display:flex;justify-content:flex-end;gap:8px}.actions button,.dialog button{padding:7px 18px;background:#eee;border:1px solid #999}.disclaimer{font-size:11px;color:#777;text-align:center}.iso{background:#e6f3ff;border:1px solid #b4d8f4;padding:8px;margin:8px 0}.iso small{display:block;color:#587083}.teacher{width:620px;margin:15px auto;background:#fff8dc;border:1px solid #ead68a;padding:13px 16px;border-radius:8px;font-size:13px}
.modal{position:fixed;inset:0;background:#0008;display:grid;place-items:center;z-index:99}.dialog{width:390px;background:white;padding:22px;box-shadow:0 20px 80px #0006}.dialog>div{display:flex;justify-content:flex-end;gap:8px}.danger{background:#c9302c!important;color:white!important}
.dark{background:#111;color:#eee;border:0}.dark button{color:white}.bios-bg{background:#090b12}.bios-screen{font-family:"Courier New",monospace;color:#fff;background:#071d9c;width:min(980px,94vw);min-height:620px;margin:24px auto;border:6px double #d8d8d8;position:relative}.bios-title{text-align:center;background:#aaa;color:#071d9c;padding:8px;font-weight:bold}.bios-title small{font-size:12px}.bios-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:55px 50px}.bios-item,.bios-line{padding:10px 8px}.bios-item.selected,.bios-line.selected{background:#d3d3d3;color:#071d9c}.bios-panel{padding:30px 45px}.bios-panel h3{text-align:center;border-bottom:1px solid #fff;padding-bottom:10px}.bios-help{color:#ffe95a;margin-top:60px}.bios-footer{position:absolute;bottom:0;left:0;right:0;border-top:1px solid white;padding:14px;text-align:center;color:#ffe95a}.toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);background:#111;color:white;border:1px solid #777;padding:22px 30px;z-index:50;box-shadow:0 10px 60px #0008}
.uefi-bg{background:radial-gradient(circle at top,#1b3d6d,#07101e 70%);color:#eaf5ff}.uefi-top{background:#07101e;color:white;border-color:#234}.uefi-top button{color:white}.uefi-shell{width:min(1100px,95vw);min-height:650px;margin:25px auto;background:#0c1c2dcc;border:1px solid #4e83ad;box-shadow:0 0 35px #0bf2 inset,0 20px 80px #0008}.uefi-brand{padding:20px 25px;display:flex;justify-content:space-between;align-items:end;background:linear-gradient(90deg,#163e67,#0c1c2d)}.uefi-brand b{font-size:35px;color:#55c6ff}.uefi-brand small{color:#8fb5cf}#uefiTabs{display:flex;background:#102b46;border-block:1px solid #4a789b}#uefiTabs button{flex:1;padding:13px;background:transparent;border:0;color:#c7deef;cursor:pointer}#uefiTabs button.active{background:#2c6c9b;color:white;box-shadow:inset 0 -3px #6ee5ff}.uefi-content{padding:28px 38px;min-height:470px}.tab h2{font-weight:400;color:#6edfff;border-bottom:1px solid #31536e;padding-bottom:10px}.setting,.boot-option,.info-grid{background:#10283e;border:1px solid #294d69;padding:14px 16px;margin:10px 0}.setting,.boot-option{display:flex;justify-content:space-between;align-items:center}.uefi-content select{background:#173c59;color:white;border:1px solid #4b88ad;padding:7px;min-width:270px}.info-grid{display:grid;grid-template-columns:220px 1fr;gap:15px}.hint{margin-top:25px;background:#17344c;border-left:4px solid #4fd4ff;padding:14px;color:#cce7f7}.uefi-action{display:block;width:100%;text-align:left;padding:16px;margin:12px 0;background:#17679c;color:white;border:1px solid #65bfe9}.uefi-action.secondary{background:#263747}.uefi-footer{padding:12px 20px;border-top:1px solid #31536e;color:#8cb2cc;font-size:12px}.uefi-footer span{float:right}
@media(max-width:800px){.cards{grid-template-columns:1fr}.home h1{font-size:34px}.home header{display:block}.safe{display:inline-block}.rufus-window,.teacher{width:94vw}.bios-grid{grid-template-columns:1fr;padding:25px}.uefi-content{padding:18px}.setting,.boot-option{align-items:start;gap:10px;flex-direction:column}.uefi-content select{min-width:100%}}
.bios-line{display:flex;justify-content:space-between;gap:20px;cursor:default}
.bios-line b{font-weight:normal;color:#ffe95a}
.bios-line.selected b{color:#071d9c}
.bios-panel{min-height:490px}

.uefi-row{display:grid;grid-template-columns:1fr minmax(230px,auto) 45px;align-items:center;gap:15px;background:#10283e;border:1px solid #294d69;padding:13px 16px;margin:7px 0;cursor:pointer}
.uefi-row:hover,.uefi-row.selected{background:#1d5277;border-color:#65c9f0}
.uefi-row b{background:#173c59;border:1px solid #4b88ad;padding:7px 10px;font-weight:500;color:#fff}
.uefi-row em{font-size:10px;color:#73dfff;font-style:normal;text-align:right}
.uefi-row.selected b{border-color:#80e5ff}
@media(max-width:700px){.uefi-row{grid-template-columns:1fr}.uefi-row em{display:none}}

.iso-dialog{width:min(820px,94vw);padding:0;overflow:hidden}
.fake-explorer-title{display:flex;justify-content:space-between;align-items:center;padding:11px 14px;background:#f5f5f5;border-bottom:1px solid #ccc}
.fake-explorer-title button{border:0;background:transparent;font-size:20px}
.fake-path{margin:12px;border:1px solid #bbb;background:white;padding:8px;color:#555}
.file-head,.fake-file{display:grid;grid-template-columns:1fr 130px 90px;gap:10px;align-items:center}
.file-head{margin:0 12px;padding:7px 10px;border-bottom:1px solid #bbb;color:#555;font-size:12px}
.file-list{margin:0 12px;height:310px;overflow:auto;background:white;border:1px solid #bbb;border-top:0}
.fake-file{width:100%;border:0;background:white;text-align:left;padding:9px 10px;cursor:pointer}
.fake-file:hover{background:#eaf4ff}.fake-file.selected{background:#cfe8ff;outline:1px solid #75b8e8}
.fake-file span:first-child{min-width:0}.fake-file b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}.fake-file small{display:block;color:#777;margin:3px 0 0 24px}
.fake-file-bottom{display:grid;grid-template-columns:auto 1fr 170px auto auto;gap:8px;align-items:center;padding:12px;background:#f4f4f4;border-top:1px solid #ccc}
.fake-file-bottom input,.fake-file-bottom select{height:32px;border:1px solid #aaa;padding:4px 7px}.fake-file-bottom button{height:32px;border:1px solid #999;padding:0 14px}
@media(max-width:650px){.file-head,.fake-file{grid-template-columns:1fr 75px}.file-head span:nth-child(2),.fake-file span:nth-child(2){display:none}.fake-file-bottom{grid-template-columns:1fr 1fr}.fake-file-bottom label{display:none}.fake-file-bottom input,.fake-file-bottom select{grid-column:1/-1}}

/* Explorador fictício do Windows — visualização Detalhes */
.iso-dialog{width:min(1040px,96vw);height:min(650px,90vh);display:flex;flex-direction:column;background:#f8f8f8}
.explorer-toolbar{display:grid;grid-template-columns:34px 34px 34px 1fr 190px;gap:5px;align-items:center;padding:8px 10px;border-bottom:1px solid #d0d0d0;background:#fafafa}
.explorer-toolbar>button{height:32px;border:0;background:transparent;font-size:18px;color:#444}
.explorer-toolbar>button:hover{background:#e5e5e5}
.fake-path,.fake-search{margin:0;height:32px;display:flex;align-items:center;border:1px solid #c9c9c9;background:white;padding:0 9px;font-size:12px;color:#333}
.fake-search{color:#777}
.explorer-body{display:grid;grid-template-columns:190px 1fr;min-height:0;flex:1}
.explorer-side{border-right:1px solid #ddd;background:#f7f7f7;padding:12px 8px;display:flex;flex-direction:column;gap:2px;font-size:12px}
.explorer-side b{padding:10px 8px 4px}.explorer-side span{padding:7px 9px;border-radius:3px}.explorer-side span:nth-of-type(2){background:#e6e6e6}
.explorer-files{display:flex;flex-direction:column;min-width:0;background:white}
.file-head,.fake-file{display:grid!important;grid-template-columns:minmax(310px,1fr) 155px 175px 85px!important;gap:0!important;align-items:center}
.file-head{margin:0!important;padding:0!important;height:30px;border-bottom:1px solid #ddd;background:#fff;color:#444;font-size:11px}
.file-head span{height:100%;display:flex;align-items:center;padding:0 9px;border-right:1px solid #e4e4e4}
.file-list{margin:0!important;border:0!important;height:auto!important;flex:1;overflow:auto;background:white}
.fake-file{min-height:53px;padding:0!important;border:0!important;border-bottom:1px solid #f3f3f3!important;font-size:11px;color:#222}
.fake-file>span{padding:7px 9px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fake-file:hover{background:#eaf4fc!important}.fake-file.selected{background:#cce8ff!important;outline:1px solid #99d1ff!important;outline-offset:-1px}
.filename-cell{display:flex!important;align-items:center;gap:10px;min-width:0}
.filename-cell>span:last-child{min-width:0;overflow:hidden}
.filename-cell b{font-size:12px;font-weight:400;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.filename-cell small{font-size:10px;color:#777;display:block!important;margin:2px 0 0!important;overflow:hidden;text-overflow:ellipsis}
.disc-icon{position:relative;display:inline-block;flex:0 0 32px;width:32px;height:32px;border-radius:50%;background:conic-gradient(#d9e7f3,#f8fbfd,#b8d0e2,#eef7fc,#b9cddd,#f9fbfd,#d9e7f3);border:1px solid #9aaab6;box-shadow:inset 0 0 0 3px #edf4f8}
.disc-icon:before{content:"";position:absolute;inset:10px;border-radius:50%;background:#d9e4eb;border:1px solid #8fa0aa}
.disc-icon:after{content:"";position:absolute;width:5px;height:5px;left:13px;top:13px;border-radius:50%;background:white;border:1px solid #9aa}
.disc-icon i{position:absolute;width:9px;height:4px;right:-2px;bottom:2px;background:#2582c4;border-radius:1px;transform:rotate(-18deg)}
.file-status{height:28px;border-top:1px solid #ddd;background:#fafafa;display:flex;justify-content:space-between;align-items:center;padding:0 10px;color:#666;font-size:10px}
.fake-file-bottom{grid-template-columns:auto minmax(180px,1fr) 190px auto auto!important}
@media(max-width:800px){
 .iso-dialog{width:98vw}
 .explorer-body{grid-template-columns:1fr}.explorer-side{display:none}
 .explorer-toolbar{grid-template-columns:32px 32px 32px 1fr}.fake-search{display:none}
 .file-head,.fake-file{grid-template-columns:minmax(260px,1fr) 90px!important}
 .file-head span:nth-child(2),.file-head span:nth-child(3),.fake-file>span:nth-child(2),.fake-file>span:nth-child(3){display:none}
}

.top-actions{display:flex;gap:8px;margin-left:auto}.theme-toggle,.social-trigger{padding:9px 12px;border:1px solid #ccd6e0;border-radius:9px;background:#fff;cursor:pointer}.social-wrap{position:relative}.social-menu{position:absolute;right:0;top:44px;width:255px;padding:8px;background:#fff;border:1px solid #d7dee6;border-radius:12px;box-shadow:0 18px 55px #17203333;z-index:200}.social-menu a{display:flex;gap:10px;align-items:center;padding:9px;border-radius:7px;color:#24354b;text-decoration:none}.social-menu a:hover{background:#eef4f9}.social-menu i{width:25px;height:25px;display:grid;place-items:center;background:#1769aa;color:#fff;border-radius:6px;font-style:normal;font-weight:bold}.social-menu small{color:#7b8793}.home footer p{margin:5px}
:root[data-theme="dark"] body,:root[data-theme="dark"] .home{background:#10151d;color:#e7edf4}:root[data-theme="dark"] .lab-card{background:#18212c;border-color:#344353}:root[data-theme="dark"] .lab-card p,:root[data-theme="dark"] .home header p,:root[data-theme="dark"] .home footer{color:#9eacbb}:root[data-theme="dark"] .theme-toggle,:root[data-theme="dark"] .social-trigger,:root[data-theme="dark"] .social-menu{background:#18212c;color:#e7edf4;border-color:#344353}:root[data-theme="dark"] .social-menu a{color:#e7edf4}:root[data-theme="dark"] .social-menu a:hover{background:#243241}:root[data-theme="dark"] .labtop{background:#151d27;color:#e7edf4}:root[data-theme="dark"] .teacher{background:#2a281b;color:#f0e5b5}
@media(max-width:850px){.top-actions{width:100%;margin-left:0}.social-menu{left:0;right:auto}}

/* v7: redes visíveis no topo e contraste do tema escuro */
.social-icons{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.social-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:8px;text-decoration:none!important;font-family:Arial,sans-serif;font-weight:800;font-size:15px;transition:transform .15s,box-shadow .15s;box-shadow:0 1px 3px #0002}
.social-icon:hover{transform:translateY(-2px);box-shadow:0 4px 10px #0003}
.social-icon.linkedin{background:#0a66c2;color:white}.social-icon.github{background:#24292f;color:white}.social-icon.x{background:#111;color:white}.social-icon.instagram{background:#d94682;color:white}.social-icon.facebook{background:#1877f2;color:white}.social-icon.discord{background:#5865f2;color:white}.social-icon.whatsapp{background:#25d366;color:white}.social-icon.portfolio{background:#1769aa;color:white}.social-icon.portfolio-new{background:#7044a8;color:white}
:root[data-theme="dark"] .lab-card h2,:root[data-theme="dark"] .lab-card h2 *{color:#fff!important}
:root[data-theme="dark"] .lab-card b{color:#73c7ff}
:root[data-theme="dark"] .lab-card .num{color:#607080}
:root[data-theme="dark"] .home h1{color:#fff}
:root[data-theme="dark"] .social-icon{outline:1px solid #ffffff18}
@media(max-width:850px){.top-actions{align-items:flex-start;flex-direction:column}.social-icons{max-width:100%}}

/* v8 — cabeçalho conforme referência: redes em linha; tema e ambiente seguro abaixo */
.home header{display:grid!important;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:28px}
.header-right{display:flex;flex-direction:column;align-items:flex-end;gap:14px}
.header-right .social-icons{display:flex;flex-wrap:nowrap;gap:7px;justify-content:flex-end}
.header-status-row{display:flex;align-items:center;justify-content:flex-end;gap:10px;width:100%}
.theme-toggle.icon-only{width:48px;height:48px;padding:0!important;display:grid;place-items:center;font-size:25px;line-height:1;border-radius:10px;background:#17212d;border:1px solid #273547;box-shadow:none}
.safe{display:flex!important;align-items:center;justify-content:center;min-height:48px;padding:0 19px!important;border-radius:28px!important;line-height:1.12;text-align:left;white-space:normal!important}
:root[data-theme="light"] .theme-toggle.icon-only{background:#f4f7fa;border-color:#d6dee7}
:root[data-theme="dark"] .theme-toggle.icon-only{background:#17212d;border-color:#273547}
@media(max-width:900px){
 .home header{grid-template-columns:1fr}
 .header-right{align-items:flex-start}
 .header-right .social-icons{flex-wrap:wrap;justify-content:flex-start}
 .header-status-row{justify-content:flex-start}
}

/* v9 — marcas sem caixas coloridas */
.social-icon{background:transparent!important;box-shadow:none!important;border-radius:0!important;width:28px!important;height:28px!important;padding:2px!important;outline:none!important}
.social-icon img{display:block;width:24px;height:24px;object-fit:contain}
.social-icon:hover{transform:translateY(-2px) scale(1.08);box-shadow:none!important;opacity:.82}
.social-icon.portfolio,.social-icon.portfolio-new{background:transparent!important;color:inherit!important}
.portfolio-mark{display:grid;place-items:center;width:25px;height:25px;font-size:21px;line-height:1}
:root[data-theme="dark"] .social-icon.github img,
:root[data-theme="dark"] .social-icon.x img{filter:invert(1)}