*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:#f4f6f8;color:#17202a}.topbar{background:#111827;color:#fff;position:sticky;top:0;z-index:5}.topbar-inner{max-width:1100px;margin:auto;min-height:58px;display:flex;align-items:center;gap:20px;padding:0 16px}.brand{font-weight:800;color:#fff;text-decoration:none;margin-right:auto}.topbar nav{display:flex;gap:6px}.topbar nav a,.logout{color:#dbe3ed;text-decoration:none;padding:8px 10px;border-radius:8px}.topbar nav a:hover,.logout:hover{background:#253044}.container{max-width:1100px;margin:0 auto;padding:28px 16px}.narrow{max-width:650px}h1{margin:0 0 22px}h2{margin-top:0}.muted,small{color:#687586}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card,.big-card{background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:22px;text-decoration:none;color:inherit;box-shadow:0 2px 8px #00000008}.card b{display:block;font-size:30px}.card span{color:#687586}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}.big-card{font-weight:700}.btn{display:inline-block;border:1px solid #ccd3dc;background:#fff;color:#17202a;padding:9px 14px;border-radius:9px;text-decoration:none;cursor:pointer;font-size:14px}.btn.primary{background:#2563eb;border-color:#2563eb;color:#fff}.full{width:100%;margin-top:8px}.login-page{min-height:100vh;display:grid;place-items:center;padding:16px;background:#eef2f7}.login-card{background:#fff;width:min(390px,100%);padding:28px;border-radius:18px;box-shadow:0 10px 35px #0002}.login-card h1{margin-bottom:4px}.form label,.login-card label{display:block;font-weight:650;margin:14px 0}.form input,.form select,.form textarea,.login-card input,.inline-form input,.filter select{width:100%;padding:11px 12px;border:1px solid #ccd3dc;border-radius:9px;margin-top:6px;font:inherit;background:#fff}.alert{padding:11px;border-radius:9px;margin:12px 0}.error{background:#fee2e2;color:#991b1b}.inline-form{display:flex;gap:8px;margin-bottom:18px}.inline-form input{margin:0;max-width:350px}.list{display:grid;gap:9px}.list-row{display:flex;align-items:center;justify-content:space-between;background:#fff;border:1px solid #e1e5ea;border-radius:12px;padding:14px 16px}.list-row small{display:block;margin-top:3px}.link-row{color:inherit;text-decoration:none}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:18px}.back{display:inline-block;color:#526172;text-decoration:none;margin-bottom:7px}.table-wrap{overflow-x:auto;background:#fff;border:1px solid #e1e5ea;border-radius:12px}table{border-collapse:collapse;width:100%;min-width:520px}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid #edf0f3}th{font-size:13px;color:#687586;background:#fafbfc}.icon-btn{border:0;background:none;color:#c24141;cursor:pointer;font-size:18px}.task{background:#fff;border-left:4px solid #2563eb;border-radius:10px;padding:15px 17px;margin-bottom:18px}.task div{margin-top:7px;white-space:normal}.grade-list{background:#fff;border:1px solid #e1e5ea;border-radius:12px;margin-bottom:14px}.grade-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 15px;border-bottom:1px solid #edf0f3}.grade-row:last-child{border-bottom:0}.grade-buttons{display:flex;gap:5px}.grade-buttons label{width:36px;height:36px;display:grid;place-items:center;border:1px solid #ccd3dc;border-radius:8px;cursor:pointer}.grade-buttons input{display:none}.grade-buttons label.selected{background:#2563eb;color:#fff;border-color:#2563eb}.choice-tabs{display:grid;gap:8px;margin:12px 0 18px}.choice-tabs label{font-weight:500}.choice-tabs input{margin-right:8px}.result{margin-top:22px;background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:20px}.result-name{font-size:24px;font-weight:800;padding:12px 0;border-bottom:1px solid #eee}.result-name:last-child{border:0}.filter{margin-bottom:15px}@media(max-width:700px){.topbar-inner{flex-wrap:wrap;padding:9px 12px}.topbar nav{order:3;width:100%;overflow-x:auto;padding-bottom:2px}.topbar nav a{white-space:nowrap}.container{padding:20px 12px}.cards{grid-template-columns:1fr 1fr}.grid2{grid-template-columns:1fr}.page-head{align-items:center}.grade-row{align-items:flex-start;flex-direction:column}.grade-buttons{width:100%;justify-content:space-between}.grade-buttons label{flex:1}.inline-form{flex-direction:column}.inline-form input{max-width:none}.logout{font-size:13px}.brand{margin-right:0}}@media(max-width:430px){.cards{grid-template-columns:1fr}.cards .card{padding:15px}.cards .card b{font-size:25px}.topbar-inner{gap:8px}.page-head h1{font-size:24px}}

.welcome{margin-bottom:22px}.welcome h1{margin:2px 0 0}
.dashboard-menu{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}
.menu-card{background:#fff;border:1px solid #e1e5ea;border-radius:16px;padding:22px;text-decoration:none;color:inherit;display:flex;flex-direction:column;min-height:185px;transition:.15s;box-shadow:0 3px 12px #00000008}
.menu-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px #00000012}
.menu-icon{font-size:34px;margin-bottom:15px}.menu-title{font-size:20px;font-weight:800}.menu-text{color:#687586;margin-top:7px;line-height:1.4}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:26px}.stat{background:#fff;border:1px solid #e1e5ea;border-radius:12px;padding:15px 18px}.stat b{display:block;font-size:25px}.stat span{color:#687586}
.section-block{margin-top:12px}.section-block h2{margin:0}.group-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.group-card{background:#fff;border:1px solid #e1e5ea;border-radius:12px;padding:15px;text-decoration:none;color:inherit}.group-card b{display:block}.group-card span{color:#687586;font-size:14px}
.empty{background:#fff;border:1px dashed #ccd3dc;border-radius:14px;padding:25px;display:flex;flex-direction:column;gap:8px}.empty .btn{width:max-content;margin-top:6px}
.panel{background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:18px;margin-bottom:22px}.panel h2{font-size:18px;margin:0 0 12px}.add-student-form{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:end}.add-student-form label{font-weight:650}.add-student-form input,.add-student-form select{display:block;width:100%;padding:11px 12px;border:1px solid #ccd3dc;border-radius:9px;margin-top:6px;font:inherit;background:#fff}.filter-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:10px}.filter-row h2{margin:0}.filter-row select{padding:9px;border:1px solid #ccd3dc;border-radius:9px;background:#fff}.small-btn{padding:6px 9px;font-size:12px}.empty-cell{text-align:center;color:#687586;padding:25px!important}
@media(max-width:700px){.dashboard-menu{grid-template-columns:1fr}.menu-card{min-height:auto}.stats{grid-template-columns:1fr 1fr 1fr}.group-grid{grid-template-columns:1fr 1fr}.add-student-form{grid-template-columns:1fr}.add-student-form .btn{width:100%}.filter-row{align-items:flex-start;flex-direction:column}}
@media(max-width:430px){.stats{gap:7px}.stat{padding:12px 10px}.stat b{font-size:21px}.stat span{font-size:12px}.group-grid{grid-template-columns:1fr}}

/* Dashboard */
.welcome{margin-bottom:22px}.dashboard-menu{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.menu-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:22px;text-decoration:none;color:inherit;box-shadow:0 2px 8px #00000008}.menu-card:hover{border-color:#b8c3d1;transform:translateY(-1px)}.menu-icon{font-size:30px}.menu-title{font-size:19px;font-weight:800}.menu-text{color:#687586;font-size:14px;line-height:1.4}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}.stat{background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:18px}.stat b{display:block;font-size:28px}.stat span{color:#687586}.section-block{margin-top:28px}.empty{display:flex;flex-direction:column;align-items:flex-start;gap:10px;background:#fff;border:1px solid #e1e5ea;border-radius:14px;padding:22px}.group-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.group-card{display:flex;flex-direction:column;gap:5px;background:#fff;border:1px solid #e1e5ea;border-radius:12px;padding:16px;color:inherit;text-decoration:none}.group-card span{color:#687586;font-size:14px}@media(max-width:700px){.dashboard-menu,.group-grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.stat:last-child{grid-column:1/-1}}@media(max-width:430px){.stats{grid-template-columns:1fr}.stat:last-child{grid-column:auto}}