:root{color-scheme:dark;--bg:#080d14;--surface:#121c28;--surface2:#182430;--line:rgba(206,226,242,.12);--muted:#9cacc0;--accent:#62bdff;--blue:#54b7ff;--text:#f5f8fb;--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a,button,input,textarea,select{outline-offset:3px}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent)}[hidden]{display:none!important}.ambient-glow{position:fixed;z-index:-1;pointer-events:none;width:100%;height:100vh;left:0;top:0;background:radial-gradient(ellipse at 8% 2%,rgba(24,94,158,.18),transparent 38%),radial-gradient(ellipse at 94% 8%,rgba(42,148,255,.10),transparent 34%)}
.library-header{position:sticky;top:0;z-index:10;background:#080d14f2;border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}.library-header-inner{max-width:1420px;margin:auto;min-height:76px;padding:0 32px;display:flex;justify-content:space-between;align-items:center;gap:22px}.library-brand{display:flex;gap:14px;align-items:center}.library-brand strong{font-size:34px;letter-spacing:-2.5px;font-style:italic;color:var(--accent);line-height:1}.library-brand strong span{color:var(--blue)}.library-brand small{font-weight:800;font-size:12px;letter-spacing:2px;line-height:1.35}.library-header nav{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.outline-button{border:1px solid rgba(202,226,240,.21);border-radius:11px;padding:11px 15px;background:#172431;color:var(--text);font-weight:750;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px}.outline-button:hover{border-color:var(--accent);background:#203043}
.library-main,.admin-main{max-width:1420px;padding:34px 32px 48px;margin:0 auto}.library-hero{min-height:310px;border:1px solid rgba(207,230,246,.16);border-radius:25px;position:relative;overflow:hidden;display:flex;align-items:center;background:radial-gradient(ellipse at 84% 50%,rgba(55,133,255,.16),transparent 41%),radial-gradient(ellipse at 34% 90%,rgba(62,131,215,.17),transparent 60%),linear-gradient(130deg,#142031,#0c131c 80%);padding:48px 55px;margin-bottom:40px}.hero-inner{position:relative;z-index:2;max-width:775px}.eyebrow{display:inline-flex;gap:9px;align-items:center;color:var(--accent);font-weight:900;letter-spacing:1.65px;font-size:11px}.eyebrow-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}.library-hero h1{margin:14px 0 12px;font-size:clamp(29px,4vw,54px);line-height:1.11;letter-spacing:-1.9px}.library-hero h1 em{font-style:normal;color:var(--accent)}.library-hero p{max-width:620px;margin:0;color:#bdc8d5;font-size:15px;line-height:1.7}.library-stats{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px}.library-stats span{color:#b7c5d1;border-right:1px solid var(--line);padding-right:26px}.library-stats span:last-child{border:0}.library-stats strong{font-size:22px;color:#fff;margin-right:5px}.hero-decoration{position:absolute;right:-36px;top:0;bottom:0;width:40%;display:grid;place-items:center;opacity:.7}.deco-ring{border:1px solid rgba(65,156,255,.18);border-radius:50%;position:absolute;width:320px;height:320px}.deco-ring.two{width:220px;height:220px;border-color:rgba(74,174,249,.3)}.deco-icon{font-size:125px;color:rgba(81,162,255,.21);filter:drop-shadow(0 0 40px rgba(65,150,255,.24));transform:rotate(-10deg)}.library-toolbar{display:flex;justify-content:space-between;align-items:end;gap:22px;margin:0 0 18px}.library-toolbar h2{font-size:26px;letter-spacing:-.6px;margin:7px 0 0}.search-box{min-width:250px;width:335px;display:flex;align-items:center;gap:12px;border:1px solid var(--line);background:#111b27;padding:0 15px;border-radius:12px}.search-box span{font-size:28px;color:var(--accent)}.search-box input{min-width:0;width:100%;height:47px;border:0;background:transparent;color:var(--text);outline:none}.search-box input::placeholder{color:#79899e}
.filter-row{display:flex;gap:9px;margin:0 0 26px;flex-wrap:wrap}.filter{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:#111b26;color:#afbdcc;border-radius:11px;padding:10px 15px;font-weight:800}.filter span{font-size:11px;padding:1px 7px;border-radius:99px;background:#28343e;color:#aab8c5}.filter.active{background:var(--accent);color:#041a30;border-color:var(--accent)}.filter.active span{background:rgba(24,46,3,.12);color:#18324b}.filter:hover:not(.active){border-color:var(--accent);color:var(--text)}.media-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.media-card{min-width:0;border:1px solid var(--line);background:#111a25;border-radius:18px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,border-color .2s,box-shadow .2s}.media-card:hover{transform:translateY(-4px);border-color:rgba(190,239,72,.35);box-shadow:0 22px 55px rgba(0,0,0,.26)}.card-visual{position:relative;height:205px;overflow:hidden;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at 67% 40%,rgba(66,141,239,.26),transparent 55%),linear-gradient(135deg,#1b334f,#0b1422)}.card-visual.pdf{background:radial-gradient(ellipse at 70% 35%,rgba(62,146,253,.25),transparent 60%),linear-gradient(125deg,#27392b,#10202a)}.card-visual.video{background:radial-gradient(circle at 55% 40%,rgba(57,153,255,.31),transparent 70%),linear-gradient(135deg,#203f60,#131929)}.card-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.62);transition:transform .3s}.media-card:hover .card-visual img{transform:scale(1.04)}.visual-pattern{position:absolute;inset:0;opacity:.18;background-image:linear-gradient(45deg,transparent 48%,rgba(250,255,255,.13) 49%,rgba(250,255,255,.13) 50%,transparent 51%);background-size:28px 28px}.visual-symbol{z-index:1;display:grid;place-items:center;width:82px;height:82px;border-radius:22px;border:1px solid rgba(225,253,202,.33);background:rgba(5,13,22,.6);font-size:34px;color:var(--accent);box-shadow:0 10px 34px rgba(0,0,0,.3)}.card-visual.youtube .visual-symbol{color:#fff;background:rgba(18,25,32,.65)}.visual-tag{position:absolute;z-index:1;top:15px;left:16px;background:rgba(8,15,22,.75);border:1px solid rgba(255,255,255,.13);padding:6px 10px;border-radius:8px;font-size:10px;font-weight:900;letter-spacing:1.2px}.card-body{padding:22px;display:flex;flex-direction:column;flex:1}.card-kicker{font-size:11px;font-weight:850;color:var(--accent);letter-spacing:1.3px}.card-body h3{font-size:18px;line-height:1.27;letter-spacing:-.25px;margin:11px 0 10px}.card-body p{color:var(--muted);line-height:1.65;font-size:13px;margin:0 0 22px;flex:1;min-height:44px}.card-actions{display:flex;gap:8px}.view-button,.big-button,.main-button{border:0;color:#041626;background:linear-gradient(135deg,#7ad1ff,#328ff2);padding:12px 16px;min-height:46px;border-radius:10px;font-weight:900;text-align:center;display:inline-flex;justify-content:space-between;align-items:center;gap:12px}.view-button{flex:1}.view-button:hover,.big-button:hover,.main-button:hover{filter:brightness(1.1)}.download-button{display:grid;place-items:center;width:48px;border-radius:10px;border:1px solid var(--line);background:#192838;font-size:19px}.download-button:hover{border-color:var(--accent)}.library-bottom{margin-top:46px;border:1px solid var(--line);border-radius:19px;background:linear-gradient(100deg,rgba(80,165,255,.11),rgba(37,102,149,.1));padding:27px 31px;display:flex;align-items:center;justify-content:space-between;gap:24px}.library-bottom h2{font-size:24px;margin:9px 0 6px}.library-bottom p{color:var(--muted);margin:0}.big-button{min-width:205px;justify-content:center}.library-footer{max-width:1420px;margin:0 auto;padding:22px 32px 35px;color:#8292a3;border-top:1px solid var(--line);display:flex;gap:16px;justify-content:space-between;font-size:12px}.empty-library{background:#131e29;border:1px dashed rgba(209,227,240,.19);border-radius:16px;text-align:center;padding:45px 25px}.empty-library>span{font-size:45px;color:var(--accent)}.empty-library h3{font-size:20px;margin:8px 0}.empty-library p{color:var(--muted)}
.viewer-open{overflow:hidden}.viewer-dialog{border:1px solid rgba(208,232,247,.28);border-radius:19px;padding:0;background:#0b1119;color:var(--text);width:min(1100px,95vw);height:min(820px,94dvh);max-width:none;max-height:none;box-shadow:0 25px 100px #000d}.viewer-dialog::backdrop{background:rgba(0,0,0,.85);backdrop-filter:blur(9px)}.viewer-bar{height:62px;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;gap:10px;border-bottom:1px solid var(--line)}.viewer-bar strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.viewer-bar button{border:1px solid var(--line);border-radius:8px;color:#fff;background:#1b2836;padding:9px 12px;white-space:nowrap}.viewer-body{height:calc(100% - 62px);display:grid;place-items:center;background:#080e15}.viewer-body iframe,.viewer-body video{width:100%;height:100%;border:none;object-fit:contain}
/* Administração */
.admin-main{max-width:1460px}.auth-shell{min-height:calc(100vh - 240px);display:grid;place-items:center;padding:30px 0}.auth-card{width:min(500px,100%);border:1px solid rgba(193,227,246,.2);border-radius:22px;padding:34px;background:linear-gradient(145deg,#182632,#0d151e);box-shadow:0 26px 75px rgba(0,0,0,.22)}.auth-card h1{font-size:29px;line-height:1.16;letter-spacing:-.7px;margin:13px 0}.muted,.fine-print{color:var(--muted)}.fine-print{font-size:12px;line-height:1.6;margin-top:18px}.stack-form{display:grid;gap:17px;margin-top:22px}.stack-form label{font-size:13px;font-weight:750;color:#d8e0e7;display:grid;gap:8px}.stack-form input:not([type=checkbox]),.stack-form textarea,.stack-form select{width:100%;background:#0a141f;border:1px solid rgba(206,227,242,.18);border-radius:10px;padding:12px 13px;min-height:45px;color:var(--text);font-size:14px}.stack-form input::placeholder,.stack-form textarea::placeholder{color:#728499}.stack-form input:focus,.stack-form textarea:focus,.stack-form select:focus{border-color:var(--accent);outline:none}.stack-form input[type=file]{padding:12px 10px}.stack-form textarea{resize:vertical}.main-button{justify-content:center;font-size:14px;margin-top:3px}.notice{border:1px solid rgba(86,172,250,.34);background:rgba(53,126,242,.14);padding:13px 16px;border-radius:11px;color:#cfe8ff;margin:16px 0}.notice.error{border-color:rgba(243,121,121,.34);background:rgba(216,83,83,.12);color:#ffc7c7}.admin-intro{display:flex;justify-content:space-between;gap:18px;align-items:center;margin:15px 0 25px}.admin-intro h1{font-size:clamp(27px,3.2vw,37px);letter-spacing:-1px;line-height:1.1;margin:12px 0 8px}.admin-intro p{margin:0;color:var(--muted)}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:0 0 25px}.metric{border:1px solid var(--line);background:#121d28;border-radius:15px;padding:19px 21px}.metric strong{display:block;font-size:32px;letter-spacing:-1px;color:var(--accent);line-height:1.2}.metric span{font-size:12px;color:var(--muted)}.admin-columns{display:grid;grid-template-columns:minmax(310px,.88fr) minmax(420px,1.12fr);gap:18px;align-items:start}.admin-panel{min-width:0;padding:23px;background:#111b26;border-radius:17px;border:1px solid var(--line)}.section-header{display:flex;justify-content:space-between;align-items:center;gap:12px}.section-header h2{margin:7px 0 0;font-size:22px;letter-spacing:-.5px}.text-link{font-weight:800;color:var(--accent);font-size:13px}.field-note{font-size:12px;color:var(--muted);font-weight:500;line-height:1.5;margin:3px 0 0}.field-note code{color:#8acaff}.file-choice{border:1px dashed rgba(201,231,246,.2);background:#142230;padding:15px;border-radius:11px}.stack-form .checkbox-row{display:flex;align-items:center;gap:10px;background:rgba(64,153,245,.08);padding:13px;border-radius:10px;color:#c1e8ff}.checkbox-row input{width:18px;height:18px;accent-color:#448ef7}.counter{font-size:12px;color:var(--muted)}.manage-item{display:grid;grid-template-columns:53px minmax(0,1fr);gap:13px;padding:18px 0;border-bottom:1px solid var(--line)}.manage-item:last-child{border:0}.manage-icon{width:52px;height:52px;border-radius:13px;background:rgba(80,165,255,.11);color:var(--accent);display:grid;place-items:center;font-size:22px}.manage-icon.youtube,.manage-icon.video{background:rgba(76,174,255,.12);color:var(--blue)}.manage-content{min-width:0}.manage-top{display:flex;gap:8px;align-items:center;margin-bottom:7px}.pill{color:#c6d8e3;font-size:10px;font-weight:850;text-transform:uppercase;letter-spacing:.7px}.status{font-size:10px;border-radius:99px;padding:3px 7px;color:#c9ac98;background:rgba(180,137,85,.1)}.status.active{background:rgba(67,148,243,.12);color:#83c8ff}.manage-content>strong{display:block;font-size:14px;line-height:1.3}.manage-content>small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:12px;color:var(--muted);margin-top:5px}.manage-buttons{margin-top:13px;display:flex;flex-wrap:wrap;gap:7px}.tiny-btn{border:1px solid rgba(207,227,242,.19);color:#d6e2eb;background:#1c2b37;border-radius:8px;font-weight:750;padding:6px 11px;font-size:12px;display:inline-block;line-height:1.5}.tiny-btn:hover{border-color:var(--accent)}.tiny-btn.danger{color:#ffc4c4}.inline-form{display:inline-flex;margin:0}.empty-note{color:var(--muted)}
@media(max-width:1060px){.media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-columns{grid-template-columns:1fr}.hero-decoration{opacity:.3}}
@media(max-width:670px){.library-header-inner{min-height:68px;padding:0 16px;gap:9px}.library-brand strong{font-size:27px}.library-brand small{font-size:10px;letter-spacing:.9px}.library-main,.admin-main{padding:19px 16px 33px}.library-hero{padding:31px 23px;min-height:280px;border-radius:18px;margin-bottom:30px}.library-hero h1{letter-spacing:-.9px}.library-stats{gap:12px}.library-stats span{padding-right:12px}.library-stats strong{font-size:18px}.hero-decoration{display:none}.library-toolbar{align-items:stretch;flex-direction:column;gap:15px}.library-toolbar h2{font-size:22px}.search-box{width:100%;min-width:0}.media-grid{grid-template-columns:1fr;gap:15px}.card-visual{height:190px}.card-body{padding:18px}.library-bottom{align-items:stretch;flex-direction:column;padding:22px}.library-footer{padding:18px 16px;flex-direction:column;gap:6px}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-intro{align-items:start;flex-direction:column}.admin-panel{padding:18px}.auth-card{padding:23px}.viewer-dialog{width:100vw;height:95dvh;border-radius:16px 16px 0 0;margin:auto auto 0}.viewer-bar{height:58px}.viewer-body{height:calc(100% - 58px)}.outline-button{font-size:12px;padding:9px 10px}}
@media(max-width:370px){.library-brand small{display:none}.metric{padding:13px}.library-stats span{font-size:12px}.card-visual{height:160px}}
.upload-progress{padding:8px 0 3px}.upload-track{height:9px;background:#26394b;border-radius:99px;overflow:hidden;margin-bottom:9px}.upload-track div{width:0;height:100%;background:linear-gradient(90deg,#3e8fff,#ffc94d);transition:width .2s}.upload-progress span{color:var(--accent);font-size:12px}.upload-error{padding:10px 12px;margin:8px 0 0;color:#ffcccc;background:rgba(255,70,70,.11);border-radius:9px;font-size:12px}
.admin-toolbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
@media(max-width:670px){.admin-toolbar{width:100%;justify-content:space-between}}

/* Vision Connect 3.3: todas as ações em azul */
:root{--accent:#60bbff;--blue:#4fa6ff;--line:rgba(117,173,234,.19)}.filter.active{background:linear-gradient(135deg,#66c0ff,#2b84eb);color:#041626}.filter.active span{background:rgba(0,30,75,.19);color:#e4f5ff}.view-button,.big-button,.main-button{background:linear-gradient(110deg,#6fcaff,#2c83ee);color:#04182c}.card-visual.pdf{background:radial-gradient(ellipse at 67% 36%,rgba(39,130,255,.34),transparent 65%),linear-gradient(125deg,#172b50,#10202d)}.library-bottom{background:linear-gradient(100deg,rgba(47,121,246,.16),rgba(42,151,239,.08))}.checkbox-row input{accent-color:#408dff}.welcome-student{font-size:13px;color:#9ed8ff;font-weight:700}.status.active{background:rgba(49,153,254,.13);color:#85c8ff}.manage-icon{background:rgba(51,144,255,.14)}.notice:not(.error){border-color:rgba(56,155,251,.38);background:rgba(43,124,238,.13);color:#b5dfff}

/* V3.6: rotas previsíveis e estado de navegação */
.library-header nav .nav-active{background:rgba(49,132,249,.17);border-color:rgba(117,193,255,.56);color:#9bd7ff;cursor:default}
.library-header nav .nav-logout{color:#b5c7dd;background:rgba(26,45,69,.56)}
.library-header nav .nav-logout:hover{color:#fff;border-color:rgba(255,190,134,.58)}
.library-header nav .outline-button{font-size:13px;min-height:39px;padding:8px 12px}
.library-header-inner{gap:14px}
.library-header .welcome-student{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:760px){.library-header-inner{padding:9px 13px;gap:6px;align-items:flex-start;flex-wrap:wrap}.library-header nav{width:100%;flex-wrap:wrap;gap:6px;padding-bottom:3px}.library-header nav .outline-button{font-size:13px;min-height:37px;padding:7px 11px}.library-header .welcome-student{margin-left:auto;align-self:center;max-width:115px;font-size:12px}.library-brand strong{font-size:27px}.library-brand small{font-size:11px;letter-spacing:.8px}}

/* Vision Connect V3.7 — logotipo oficial em todas as áreas PHP */
.vc-library-logo{display:block;width:164px;height:68px;max-width:100%;object-fit:contain;border-radius:9px;background:#071325;flex:none}
.library-brand{gap:10px;min-width:0}.library-brand small{font-size:10px;letter-spacing:.12em;line-height:1.35;color:#a9c7e7}
@media(max-width:980px){.library-brand small{display:none}}
@media(max-width:670px){.vc-library-logo{width:113px;height:49px}.library-header-inner{gap:7px}.library-header nav{gap:5px}.library-header nav .outline-button{padding:8px 9px;min-height:37px}}
@media(max-width:360px){.vc-library-logo{width:96px;height:42px}.library-header nav .outline-button{padding:7px;font-size:11px}}

/* V3.8: cabecalho seguro independente das dimensoes originais da imagem */
.library-header-inner{min-height:76px;align-items:center;gap:12px}
.library-header .library-brand{flex:0 0 auto;max-width:220px;min-width:0;display:flex;align-items:center;gap:8px}
.library-header img.vc-library-logo{display:block!important;width:136px!important;height:54px!important;max-width:136px!important;max-height:54px!important;object-fit:contain!important;flex:0 0 auto!important}
.library-brand small{white-space:nowrap;font-size:10px}
.library-header nav{margin-left:auto;min-width:0;justify-content:flex-end;gap:7px}
@media(max-width:760px){.library-header-inner{min-height:68px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 14px}.library-header .library-brand{max-width:160px}.library-header img.vc-library-logo{width:108px!important;height:43px!important;max-width:108px!important;max-height:43px!important}.library-header nav{width:auto;max-width:100%;margin-left:auto;justify-content:flex-end;padding:0;gap:5px}.library-header nav .outline-button{min-height:34px;padding:6px 9px;font-size:12px}.library-header .welcome-student{max-width:100px}}
@media(max-width:440px){.library-header nav{width:100%;justify-content:flex-start}.library-header img.vc-library-logo{width:96px!important;height:40px!important;max-width:96px!important;max-height:40px!important}}