*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:#f4f7fb;color:#182230}.topbar{height:64px;background:#fff;border-bottom:1px solid #e4e9f0;display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}.brand{font-weight:800;font-size:19px;color:#182230;text-decoration:none}.userbar{font-size:14px;color:#667085}.userbar a{color:#b42318;text-decoration:none;margin-left:10px}.container{max-width:1150px;margin:36px auto;padding:0 22px}h1{font-size:32px;margin:0 0 7px}h2{margin-top:0}.muted{color:#667085}.landing,.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#eef4ff,#f7f9fc)}.hero,.login-card{background:#fff;border:1px solid #e5eaf0;border-radius:24px;padding:48px;box-shadow:0 18px 50px #162b4d18;text-align:center}.hero{max-width:650px}.hero h1{font-size:42px}.logo{font-size:54px}.btn{display:inline-block;border:0;border-radius:10px;padding:11px 17px;background:#e9eef5;color:#182230;text-decoration:none;cursor:pointer;font-weight:700}.btn.primary{background:#2457d6;color:white}.btn.full{width:100%;margin-top:18px}.btn.small{padding:7px 10px;font-size:13px}.login-card{width:min(420px,92vw);text-align:left}.login-card h1{text-align:center}.login-card .logo{text-align:center}label{display:block;font-weight:700;margin:15px 0 7px}input,select,textarea{width:100%;padding:11px;border:1px solid #ccd4df;border-radius:9px;font-size:15px;background:#fff;font-family:inherit}textarea{resize:vertical}.alert{background:#fff0f0;border:1px solid #ffcaca;color:#a11;padding:12px;border-radius:9px;margin:12px 0}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:28px 0}.grid-3{grid-template-columns:repeat(3,1fr)}.card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:22px;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:7px;box-shadow:0 8px 25px #172b4d0b}.card span{font-size:28px}.card strong{font-size:27px}.card small{color:#667085}.panel{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:24px;margin-top:20px}.inline-form{display:flex;gap:10px;flex-wrap:wrap}.inline-form input{flex:1;min-width:180px}.list{margin-top:20px}.list-item{background:#fff;border:1px solid #e2e8f0;padding:16px 18px;margin-bottom:10px;border-radius:12px;display:flex;justify-content:space-between;align-items:center;gap:20px}.list-item>a,.list-item>span:first-child{color:inherit;text-decoration:none}.list-item small{display:block;color:#667085;margin-top:5px}.actions{display:flex;gap:10px;margin:20px 0;flex-wrap:wrap}.form-panel{max-width:700px}.danger{color:#b42318}.back{display:block;text-align:center;margin-top:18px;color:#667085}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:11px 9px;border-bottom:1px solid #e7ebf0;text-align:left;vertical-align:top}th{font-size:13px;color:#667085}.small-input{min-width:80px;width:auto;padding:7px}.table-wrap form{display:contents}@media(max-width:850px){.grid,.grid-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:500px){.grid,.grid-3{grid-template-columns:1fr}.topbar{padding:0 14px}.brand{font-size:15px}.userbar{font-size:11px}.container{margin-top:24px}.hero,.login-card{padding:30px 22px}.hero h1{font-size:32px}.list-item{align-items:flex-start;flex-direction:column}}

/* Resposta a materiais */
.answer-banner{display:flex;align-items:center;gap:14px;background:#eef4ff;border:2px solid #2457d6;border-radius:14px;padding:16px;margin-bottom:20px;color:#163b96;font-size:28px}
.answer-banner div{display:flex;flex-direction:column;gap:3px;font-size:16px}
.answer-banner strong{font-size:18px}
.answer-banner span{font-size:13px;color:#53657d}
.submit-panel{position:relative}
.submit-panel h2{font-size:22px}
.submit-answer{font-size:16px;padding:14px 18px;box-shadow:0 5px 14px #2457d633}
.submit-answer:hover{transform:translateY(-1px)}
.file-card .card-actions{justify-content:stretch}
.file-card .card-actions .btn{width:100%;text-align:center}
/* Performance */
.upload-progress{position:relative;height:12px;background:#e7edf5;border-radius:99px;overflow:hidden;margin:10px 0 14px}.upload-progress-bar{height:100%;width:0%;background:#2457d6;transition:width .15s ease}.upload-progress span{display:block;font-size:12px;text-align:right;margin-top:4px;color:#667085}.fast-upload button:disabled{opacity:.65;cursor:wait}

/* ===== Dashboard moderno — Opção 1 ===== */
body.app-body{background:#f5f8fc}
.app-shell{min-height:100vh;display:flex}
.sidebar{width:238px;flex:0 0 238px;background:#102a43;color:#fff;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:30;box-shadow:8px 0 25px rgba(16,42,67,.10)}
.side-brand{height:82px;padding:17px 18px;display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.09)}
.brand-mark{width:43px;height:43px;border-radius:12px;background:#fff;display:grid;place-items:center;font-size:24px}.side-brand b{display:block;font-size:17px}.side-brand small{display:block;color:#b9c7d8;margin-top:2px;font-size:12px}
.side-nav{padding:18px 12px;display:flex;flex-direction:column;gap:5px}.side-link{display:flex;align-items:center;gap:12px;color:#dce6f1;text-decoration:none;padding:11px 13px;border-radius:10px;font-size:14px;transition:.16s}.side-link span{width:24px;text-align:center;font-size:18px}.side-link b{font-weight:700}.side-link:hover{background:rgba(255,255,255,.08);color:#fff}.side-link.active{background:#2d6cdf;color:#fff;box-shadow:0 5px 16px rgba(45,108,223,.28)}.side-bottom{margin-top:auto;padding:12px;border-top:1px solid rgba(255,255,255,.09)}.logout-link{color:#f4c5c5}
.app-main{width:calc(100% - 238px);margin-left:238px;min-width:0}.app-topbar{height:74px;padding:0 30px;position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #e6ebf2}.top-search{width:min(500px,45vw);position:relative}.top-search span{position:absolute;left:14px;top:9px;font-size:22px;color:#7a8798}.top-search input{height:42px;border-radius:12px;background:#f5f7fa;border-color:#e2e7ee;padding-left:42px}.userbar{display:flex;align-items:center;gap:9px;color:#243b53}.userbar .notif{font-size:19px;margin-right:5px}.user-avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#2d6cdf;color:#fff;font-weight:800}.user-name{font-weight:800}.userbar small{color:#7b8794;margin-left:-4px}.menu-toggle,.mobile-title{display:none}
.dashboard{max-width:1240px;margin:0 auto;padding-top:34px;padding-bottom:50px}.welcome-row{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:25px}.welcome-row h1{font-size:32px;margin:3px 0 6px;letter-spacing:-.6px}.eyebrow{font-size:11px;letter-spacing:1.4px;font-weight:900;color:#2d6cdf;margin:0}.date-chip{background:#fff;border:1px solid #e1e7ef;border-radius:11px;padding:10px 13px;color:#52657a;font-size:13px;box-shadow:0 4px 14px rgba(20,43,70,.05)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:0 0 22px}.stat-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #e2e8f0;border-radius:15px;padding:18px;text-decoration:none;color:#172b4d;box-shadow:0 5px 18px rgba(23,43,77,.05);transition:.16s}.stat-card:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(23,43,77,.09)}.stat-icon{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;font-size:24px;background:#edf3ff}.stat-card.green .stat-icon{background:#eaf9f1}.stat-card.orange .stat-icon{background:#fff4e8}.stat-card.red .stat-icon{background:#fff0f0}.stat-card.purple .stat-icon{background:#f2edff}.stat-card strong{display:block;font-size:25px;line-height:1.05}.stat-card small{display:block;color:#6b7c93;margin-top:5px;font-size:12px;font-weight:700}.dashboard-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}.dash-panel{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:20px;box-shadow:0 5px 18px rgba(23,43,77,.04);min-width:0}.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:13px}.panel-head h2{font-size:18px;margin:0 0 3px}.panel-head p{margin:0;font-size:12px}.text-link{color:#2d6cdf;text-decoration:none;font-size:12px;font-weight:800;white-space:nowrap}.activity-row,.task-row,.evaluation-row{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;border-top:1px solid #edf1f5;padding:13px 2px}.activity-row:first-of-type,.task-row:first-of-type{border-top:0}.activity-icon,.task-icon{width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:#eef4ff;display:grid;place-items:center;font-size:19px}.activity-main,.task-row span:nth-child(2),.evaluation-row span:nth-child(2){min-width:0;flex:1}.activity-main b,.task-row b,.evaluation-row b{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.activity-main small,.task-row small,.evaluation-row small{display:block;color:#718096;font-size:11px;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.activity-time{font-size:11px;color:#7b8794}.task-row strong{font-size:12px;color:#2d6cdf;white-space:nowrap}.empty-mini{padding:30px 10px;text-align:center;color:#7b8794;font-size:13px}.evaluations{margin-top:18px}.evaluation-row{border-top:1px solid #edf1f5}.grade-circle{width:45px;height:45px;border-radius:50%;background:#eaf9f1;color:#16794c;display:grid;place-items:center;font-size:16px;font-weight:900;flex:0 0 45px}.quick-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}.quick{background:#fff;border:1px solid #e2e8f0;border-radius:15px;padding:17px;text-decoration:none;color:#172b4d;display:grid;grid-template-columns:42px 1fr;column-gap:11px;box-shadow:0 5px 18px rgba(23,43,77,.04);transition:.16s}.quick:hover{transform:translateY(-2px)}.quick>span{grid-row:span 2;width:42px;height:42px;border-radius:11px;display:grid;place-items:center;font-size:21px;background:#eef4ff}.quick.green>span{background:#eaf9f1}.quick.purple>span{background:#f2edff}.quick b{font-size:14px;align-self:end}.quick small{color:#718096;font-size:11px;margin-top:3px}.student-stats .stat-card{min-height:86px}
@media(max-width:1050px){.stats-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}.app-topbar{padding:0 20px}.top-search{width:42vw}}
@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:translateX(0)}.app-main{width:100%;margin-left:0}.menu-toggle{display:block;border:0;background:transparent;font-size:22px;cursor:pointer}.mobile-title{display:block;margin-right:auto;margin-left:10px}.top-search{display:none}.user-name,.userbar small{display:none}.app-topbar{gap:10px}.dashboard{padding-left:18px;padding-right:18px}}
@media(max-width:600px){.stats-grid,.quick-actions{grid-template-columns:1fr 1fr}.welcome-row{align-items:flex-start;flex-direction:column}.welcome-row h1{font-size:27px}.date-chip{display:none}.quick{padding:13px;grid-template-columns:36px 1fr}.quick>span{width:36px;height:36px}.stat-card{padding:14px}.stat-icon{width:42px;height:42px;font-size:21px}.stat-card strong{font-size:22px}}
@media(max-width:430px){.stats-grid,.quick-actions{grid-template-columns:1fr}.dashboard{padding-top:23px}.dash-panel{padding:16px}.activity-row,.task-row,.evaluation-row{gap:9px}.activity-time{display:none}}
/* ===== Novas funcionalidades ===== */
.page{max-width:1240px;margin:0 auto;padding:34px 24px 60px}.page-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:22px}.page-head h1{margin:4px 0 5px;font-size:30px}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-grid label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:800;color:#344054}.form-grid .full{grid-column:1/-1}.form-grid input,.form-grid select,.form-grid textarea,.search-large input{width:100%;padding:12px 13px;border:1px solid #d0d7e2;border-radius:10px;background:#fff;font:inherit;color:#172b4d}.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus,.search-large input:focus{outline:3px solid #dce8ff;border-color:#2d6cdf}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;padding:11px 16px;text-decoration:none;font-weight:800;cursor:pointer;background:#eef2f7;color:#243b53}.btn.primary{background:#2d6cdf;color:#fff}.btn.small{padding:8px 10px;font-size:12px}.alert.error{background:#fff1f1;border-color:#ffd1d1;color:#a11}.timeline{display:flex;flex-direction:column}.timeline-item{display:grid;grid-template-columns:76px 1fr;gap:15px;padding:15px 0;border-bottom:1px solid #edf1f5}.timeline-item:last-child{border-bottom:0}.timeline-date{font-weight:900;color:#2d6cdf}.timeline-date small{display:block;color:#667085;margin-top:3px}.timeline-item b{display:inline-block;margin-right:7px}.timeline-item small{display:block;color:#667085;margin-top:5px}.badge{display:inline-block;background:#eef4ff;color:#2457d6;border-radius:99px;padding:4px 8px;font-size:10px;font-weight:800}.list-row{display:flex;justify-content:space-between;gap:15px;padding:14px 0;border-bottom:1px solid #edf1f5}.list-row:last-child{border-bottom:0}.list-row span{min-width:0}.list-row b,.list-row small{display:block}.list-row small{color:#667085;margin-top:4px}.danger{color:#b42318;text-decoration:none;font-weight:800}.message-row{padding:15px;border:1px solid #e5eaf0;border-radius:12px;margin-bottom:10px;background:#fafcff}.message-row.unread{border-left:4px solid #2d6cdf}.message-row b,.message-row small{display:block}.message-row small{color:#667085;margin-top:4px}.message-row p{line-height:1.5;color:#344054;margin-bottom:0}.notification-list{display:flex;flex-direction:column}.notification-row{display:flex;gap:13px;padding:15px 4px;border-bottom:1px solid #edf1f5;text-decoration:none;color:inherit}.notification-row:last-child{border-bottom:0}.notification-icon{width:42px;height:42px;display:grid;place-items:center;background:#eef4ff;border-radius:12px}.notification-row b,.notification-row small,.notification-row time{display:block}.notification-row small{color:#667085;margin-top:3px}.notification-row time{color:#98a2b3;font-size:11px;margin-top:6px}.notif{position:relative;color:inherit;text-decoration:none;font-size:19px}.notif em{position:absolute;right:-9px;top:-8px;background:#e5484d;color:#fff;border-radius:99px;font-size:9px;font-style:normal;font-weight:900;padding:2px 5px;min-width:16px;text-align:center}.progress{height:8px;background:#e8edf3;border-radius:99px;overflow:hidden;margin-bottom:5px}.progress span{display:block;height:100%;background:#2d6cdf;border-radius:99px}.search-large{display:flex;gap:10px;margin-bottom:20px}.search-result{display:flex;align-items:center;gap:13px;padding:14px 5px;border-top:1px solid #edf1f5;text-decoration:none;color:inherit}.search-result>span{width:42px;height:42px;display:grid;place-items:center;background:#eef4ff;border-radius:11px}.search-result div{flex:1}.search-result b,.search-result small{display:block}.search-result small{color:#667085;margin-top:3px}.check{display:flex!important;flex-direction:row!important;align-items:center}.check input{width:auto!important}.portfolio-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.portfolio-card{border:1px solid #e5eaf0;border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:7px}.portfolio-icon{font-size:28px}.portfolio-card small{color:#667085;min-height:34px}.app-topbar .top-search{display:flex}.app-topbar .top-search input{margin:0;border:1px solid #e2e7ee}.app-topbar .top-search span{top:7px}
@media(max-width:800px){.feature-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.page{padding:24px 16px 50px}.portfolio-grid{grid-template-columns:1fr}.search-large{flex-direction:column}}
.rubric{margin:18px 0;padding:15px;background:#f8fafc;border:1px solid #e4e9f0;border-radius:12px}.rubric h3{margin:0 0 5px;font-size:16px}.rubric-row{display:grid;grid-template-columns:1fr 90px 1.2fr;gap:9px;align-items:center;border-top:1px solid #e6ebf1;padding:10px 0}.rubric-row:first-of-type{border-top:0}.rubric-row b,.rubric-row small{display:block}.rubric-row small{color:#667085;font-size:11px;margin-top:3px}.rubric-row input{padding:9px;border:1px solid #d0d7e2;border-radius:8px;min-width:0}
.quick.orange>span{background:#fff4e8}
/* Registo de utilizadores */
.register-card{width:min(560px,94vw);background:#fff;border:1px solid #e2e8f0;border-radius:24px;padding:36px;box-shadow:0 18px 50px rgba(22,43,77,.10)}
.register-card h1{text-align:center;margin-bottom:6px}.center{text-align:center}.register-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:22px 0}.register-tabs a{padding:12px;border:1px solid #dce3ec;border-radius:11px;text-align:center;text-decoration:none;color:#344054;font-weight:800}.register-tabs a.active{background:#eef4ff;border-color:#2d6cdf;color:#2457d6}.form-help{font-size:12px;color:#667085;margin-top:-8px}.alert.success{background:#ecfdf3;border-color:#abefc6;color:#067647}.class-code{font-size:12px;background:#eef4ff;color:#2457d6;padding:5px 8px;border-radius:8px}.landing-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:20px}
@media(max-width:600px){.register-card{padding:26px 20px}.landing-actions{flex-direction:column}.landing-actions .btn{width:100%}}

/* Aprovação de utilizadores */
.approval-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.approval-card{border:1px solid #e5eaf0;border-radius:14px;padding:16px;background:#fbfcfe}.approval-title{display:flex;align-items:center;gap:12px;padding-bottom:10px;border-bottom:1px solid #edf1f5}.approval-title>span{width:40px;height:40px;border-radius:10px;background:#eef4ff;display:grid;place-items:center;font-size:21px}.approval-title b,.approval-title small{display:block}.approval-title small{color:#667085;margin-top:3px;font-size:12px}.inline-action{display:inline-flex;margin:0}.approval-ok{display:flex;gap:10px;align-items:center;background:#ecfdf3;border-color:#abefc6;color:#067647}.approval-ok span{color:#667085;font-size:13px}@media(max-width:800px){.approval-grid{grid-template-columns:1fr}}