@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Nunito:wght@400;600;700;800&display=swap');
:root{--ink:#20233b;--muted:#777b91;--primary:#6757d9;--primary-dark:#5142bf;--bg:#f6f7fb;--line:#e8e9f2;--white:#fff;--shadow:0 8px 28px rgba(31,35,72,.06)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',Arial,sans-serif;font-size:15px;line-height:1.5}a{color:var(--primary);text-decoration:none}h1,h2,h3,p{margin-top:0}h1,h2,h3,.brand{font-family:'Nunito','DM Sans',sans-serif}h1{font-size:clamp(1.7rem,3vw,2.15rem);line-height:1.2;margin-bottom:8px}h2{font-size:1.3rem;margin-bottom:8px}h3{font-size:1.05rem}small{font-size:.8rem}.muted,.hint{color:var(--muted)}.eyebrow{font-size:.72rem;font-weight:800;letter-spacing:.14em;color:var(--primary);margin-bottom:8px}.hint{font-size:.82rem;margin:10px 0 0}.footer-note,.student-footer{color:var(--muted);font-size:.85rem;text-align:center;margin:28px 0 0}
button,input,select,textarea{font:inherit}label{display:block;font-weight:700;font-size:.88rem;margin:0 0 7px}input,select,textarea{width:100%;border:1px solid #dfe1ed;background:#fff;border-radius:10px;padding:11px 12px;color:var(--ink);outline:none;min-height:44px}textarea{resize:vertical}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6757d91a}form label:not(:first-child){margin-top:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:0;border-radius:10px;padding:11px 15px;font-weight:700;cursor:pointer;transition:.15s ease;white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:#f0efff;color:var(--primary)}.btn-outline{border:1px solid #dedfeb;color:var(--ink);background:#fff}.btn-danger{background:#fff0f0;color:#c23b4b}.btn-sm{padding:7px 10px;font-size:.82rem;border-radius:8px}.full{width:100%;margin-top:20px}.alert{border-radius:10px;padding:12px 14px;margin:14px 0;font-size:.9rem}.alert.error{background:#fff0f0;color:#a32e3c}.alert.success{background:#eaf8ef;color:#237b43}
.login-page{min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at 10% 15%,#ece9ff 0,transparent 30%),radial-gradient(circle at 90% 90%,#e5f6f2 0,transparent 32%),#f8f9fd}.login-wrap{width:min(920px,100%);display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 25px 70px #25264b17}.login-wrap.single{width:min(480px,100%);display:block}.login-brand{background:linear-gradient(145deg,#6757d9,#8979ef);color:#fff;padding:55px 42px;display:flex;flex-direction:column;justify-content:center}.login-brand .eyebrow{color:#e1dcff}.login-brand h1{font-size:2.8rem}.login-brand p:not(.eyebrow){color:#eeecff;max-width:330px}.brand-icon{font-size:2.6rem;margin-bottom:24px}.login-decoration{font-size:2.4rem;margin-top:35px;letter-spacing:8px}.login-card{padding:45px 40px}.login-card h2{font-size:1.8rem}.login-card form{margin-top:22px}.login-card label:not(:first-child){margin-top:15px}.tabs{display:grid;grid-template-columns:1fr 1fr;padding:4px;background:#f2f2fa;border-radius:11px;margin-top:25px}.tabs a{text-align:center;padding:10px;border-radius:8px;color:var(--muted);font-weight:700}.tabs a.active{background:#fff;color:var(--primary);box-shadow:0 2px 8px #2221}
.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 30px;gap:18px}.brand{font-weight:800;font-size:1.18rem;color:var(--ink);white-space:nowrap}.top-actions{display:flex;align-items:center;gap:15px;font-size:.9rem}.layout{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:calc(100vh - 72px)}.sidebar{background:#fff;border-right:1px solid var(--line);padding:28px 16px}.side-label{font-size:.7rem;font-weight:800;letter-spacing:.13em;color:#a0a2b4;padding:0 12px;margin-bottom:13px}.nav-link{display:block;color:#6d7087;padding:12px;border-radius:10px;font-weight:600;margin-bottom:5px}.nav-link:hover,.nav-link.active{background:#f0efff;color:var(--primary)}.content{padding:34px clamp(18px,3vw,42px);min-width:0;max-width:1500px;width:100%;margin:0 auto}.page-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}.page-heading .muted{margin-bottom:0}.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-bottom:24px}.stat-card,.panel{background:#fff;border:1px solid #ececf4;border-radius:16px;box-shadow:var(--shadow)}.stat-card{padding:22px}.stat-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:13px;font-size:1.3rem}.violet{background:#f0edff}.blue{background:#e8f3ff}.green{background:#e4f8ee}.stat-card p{color:var(--muted);margin:16px 0 2px;font-size:.88rem}.stat-card strong{font-family:'Nunito';font-size:2rem;display:block}.stat-card a{font-size:.83rem;font-weight:700;display:inline-block;margin-top:8px}.panel{padding:24px;margin-bottom:22px}.welcome-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(110deg,#fff 60%,#f0efff)}.welcome-panel p:not(.eyebrow){max-width:580px}.welcome-illustration{font-size:5rem;padding:0 25px}.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.section-title{display:flex;align-items:center;gap:10px;font-size:1.18rem;margin:0 0 20px}.count{display:inline-flex;align-items:center;justify-content:center;min-width:25px;height:25px;padding:0 7px;border-radius:8px;background:#f0efff;color:var(--primary);font:700 .78rem 'DM Sans'}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 20px}.form-grid>div{min-width:0}.form-grid .span-2{grid-column:span 2}.form-submit{display:flex;align-items:end}.form-submit .btn{min-height:44px}.section-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}.section-toolbar .section-title{margin:0}.search-form,.filter-form{display:flex;align-items:end;gap:9px}.search-form input{min-width:210px}.filter-form>div{min-width:135px}.filter-form label{font-size:.77rem}.table-wrap{width:100%;overflow-x:auto;margin-top:18px}table{border-collapse:collapse;width:100%;text-align:left;min-width:570px}th{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#fafaff}td,th{padding:13px 14px;border-bottom:1px solid #eff0f6}td{font-size:.9rem}tbody tr:last-child td{border-bottom:0}.tag{display:inline-block;padding:4px 8px;border-radius:7px;background:#f0efff;color:#5b4bc2;font-size:.8rem}.inline-form{display:inline-flex;margin:0}.empty-state{text-align:center;padding:35px 10px;color:var(--muted)}.empty-state>div{font-size:2.2rem;margin-bottom:8px}.empty-state h3{color:var(--ink);margin-bottom:5px}.activity-admin-list{margin-top:18px}.activity-admin-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid #eff0f6;align-items:flex-start}.activity-admin-item:last-child{border-bottom:0;padding-bottom:0}.date-chip{flex:0 0 55px;background:#f0efff;color:var(--primary);border-radius:12px;text-align:center;padding:7px 4px;display:flex;flex-direction:column;line-height:1.2}.date-chip strong{font-size:1.35rem}.date-chip span{font-size:.7rem;font-weight:800;margin-top:4px}.activity-admin-body{flex:1;min-width:0}.activity-admin-body p{margin:10px 0;white-space:normal;overflow-wrap:anywhere}.activity-meta{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.activity-admin-body>a{font-size:.86rem;font-weight:700}.subject-tag{display:inline-flex;background:#f0efff;color:#5b4bc2;padding:5px 9px;border-radius:7px;font-size:.77rem;font-weight:700}.notebook-dot{display:inline-block;width:12px;height:12px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #0002;flex-shrink:0}.notebook-dot.red{background:#e34d5a}.notebook-dot.purple{background:#8558ce}.notebook-dot.blue{background:#3985e5}.notebook-dot.pink{background:#e74aab}.notebook-dot.green{background:#2eaf75}.notebook-dot.yellow{background:#f3c640}
.student-content{max-width:1500px;margin:0 auto;padding:30px clamp(16px,3vw,42px)}.student-greeting{display:flex;align-items:center;gap:9px}.student-greeting small{display:block;color:var(--muted)}.avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:#eeeaff;color:var(--primary);font-weight:800}.student-hero{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(115deg,#6757d9,#8c7ef0);border-radius:20px;padding:30px 34px;color:#fff;margin-bottom:26px;overflow:hidden}.student-hero .eyebrow{color:#e2deff}.student-hero h1{font-size:2rem}.student-hero p:last-child{margin:0;color:#f0edff}.hero-emoji{font-size:5rem;opacity:.95;margin-right:20px}.week-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:20px;flex-wrap:wrap}.week-toolbar h2{margin:0 0 3px}.week-toolbar .muted{margin:0}.week-buttons{display:flex;gap:8px;flex-wrap:wrap}.week-buttons .btn{font-size:.83rem;padding:9px 11px}.week-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:12px;align-items:stretch}.day-column{background:#fff;border:1px solid #e9eaf3;border-radius:14px;overflow:hidden;min-width:0;box-shadow:0 5px 20px #222207}.day-column.today{border:2px solid #8172ec}.day-header{display:flex;align-items:center;justify-content:space-between;padding:13px 10px;background:#fafaff;border-bottom:1px solid #eff0f6;gap:5px}.today .day-header{background:#f0efff}.day-header>div{display:flex;flex-direction:column}.day-header>div span{font-size:.72rem;color:var(--muted);font-weight:700}.day-header strong{font-family:'Nunito';font-size:1.55rem;line-height:1.3}.day-count{font-size:.68rem;color:var(--muted);text-align:right}.day-body{padding:9px;min-height:150px}.no-task{text-align:center;padding:24px 4px;color:#a0a2b4}.no-task span{font-size:1.6rem}.no-task p{font-size:.75rem;margin:8px 0 0}.task-card{border:1px solid #ececf5;border-radius:10px;padding:10px;margin-bottom:9px;overflow:hidden}.task-card:last-child{margin-bottom:0}.task-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:5px}.task-card .subject-tag{font-size:.68rem;padding:4px 6px;white-space:normal}.task-description{font-size:.82rem;line-height:1.5;white-space:normal;overflow-wrap:anywhere;margin:11px 0}.notebook-label{font-size:.7rem;color:var(--muted);margin-top:9px}.task-image-link{display:block;margin-top:10px}.task-image-link img{display:block;width:100%;height:auto;max-height:230px;object-fit:contain;border-radius:7px;background:#f7f7fb}.image-fallback{display:none;font-size:.78rem;font-weight:700}.student-footer{padding-bottom:20px}
@media(max-width:1200px){.week-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.day-header{padding:12px}.day-body{min-height:120px}}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{display:flex;gap:5px;align-items:center;padding:10px 16px;border-right:0;border-bottom:1px solid var(--line);overflow-x:auto}.side-label{display:none}.nav-link{white-space:nowrap;margin:0;padding:9px 11px}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.week-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.content{padding-top:25px}}
@media(max-width:600px){.topbar{height:auto;min-height:64px;padding:12px 15px;flex-wrap:wrap}.top-actions{gap:8px}.top-actions>span{display:none}.brand{font-size:1rem}.layout{min-height:calc(100vh - 64px)}.sidebar{padding:8px;gap:3px}.nav-link{font-size:.8rem;padding:8px}.content,.student-content{padding:20px 13px}.stats-grid{grid-template-columns:1fr;gap:12px}.stat-card{padding:17px}.stat-card p{margin-top:9px}.panel{padding:17px;margin-bottom:16px}.welcome-panel{padding:18px}.welcome-illustration{display:none}.form-grid{grid-template-columns:1fr;gap:15px}.form-grid .span-2{grid-column:span 1}.form-submit{align-items:stretch}.form-submit .btn{width:100%}.section-toolbar{align-items:stretch}.section-toolbar .section-title{margin-bottom:5px}.search-form{width:100%}.search-form input{min-width:0;flex:1}.filter-form{width:100%;flex-wrap:wrap}.filter-form>div{flex:1;min-width:120px}.filter-form>.btn{flex:1}.activity-admin-item{gap:10px}.activity-admin-item>.inline-form .btn{font-size:.72rem;padding:7px}.date-chip{flex-basis:46px}.login-page{padding:14px}.login-wrap{grid-template-columns:1fr;border-radius:18px}.login-brand{padding:25px 25px 20px}.login-brand h1{font-size:2rem}.login-brand p:not(.eyebrow){margin-bottom:0}.brand-icon{font-size:2rem;margin-bottom:8px}.login-decoration{display:none}.login-card{padding:27px 24px}.login-wrap:not(.single) .login-brand{display:none}.student-hero{padding:24px 20px;border-radius:15px}.student-hero h1{font-size:1.65rem}.hero-emoji{font-size:3rem;margin:0 0 0 8px}.student-greeting>div{display:none}.week-toolbar{align-items:flex-start}.week-buttons{width:100%}.week-buttons .btn{flex:1;white-space:normal}.week-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.day-header{padding:10px 8px}.day-body{padding:7px}.task-card{padding:8px}.task-description{font-size:.8rem}.day-count{font-size:.63rem}.section-title{font-size:1.05rem}}
@media(max-width:360px){.week-grid{grid-template-columns:1fr}.day-body{min-height:90px}.topbar{align-items:flex-start}.top-actions .btn{padding:7px}.activity-admin-item{flex-wrap:wrap}.activity-admin-body{flex-basis:calc(100% - 60px)}}