@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');
:root{--blue:#2358ca;--deep:#143a88;--navy:#0d285d;--ink:#17243f;--muted:#77869e;--line:#e5ebf3;--bg:#f5f8fd;--surface:#fff;--shadow:0 8px 30px rgba(38,71,129,.048);--r:16px}
*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:'DM Sans',Arial,sans-serif}a{color:var(--blue);text-decoration:none}input,select,button{font:inherit}button,a,input,select{transition:.17s ease}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:'Plus Jakarta Sans',sans-serif;letter-spacing:-.03em}h1{font-size:29px}h2{font-size:18px}h3{font-size:15px}small{font-size:12px}.muted,.small-muted{color:var(--muted)}.small-muted{line-height:1.7;font-size:13px}.app-body{background:var(--bg)}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:linear-gradient(180deg,#123a88 0%,#0b285f 100%);padding:28px 16px;flex-shrink:0;color:#fff;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:15}.sidebar-brand{display:flex;gap:12px;align-items:center;margin:0 9px 45px;color:#fff}.sidebar-brand strong{display:block;font-family:'Plus Jakarta Sans',sans-serif;font-size:17px;letter-spacing:-.025em}.sidebar-brand em{font-style:normal;color:#8bc8ff}.sidebar-brand small{display:block;color:#bfd1ef;font-size:11px;margin-top:2px}.brand-icon{background:linear-gradient(130deg,#fff,#c8dfff);color:var(--blue);width:43px;height:43px;border-radius:13px;display:grid;place-items:center;font-size:26px}.school-logo{width:43px;height:43px;object-fit:contain;background:white;border-radius:10px;padding:3px}.sidebar-section{margin:0 17px 15px;font-size:10px;letter-spacing:.18em;color:#89a6d6;font-weight:800}.nav-menu{display:grid;gap:5px}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:10px;color:#c5d4ef;font-size:13.5px;font-weight:600}.nav-item:hover{background:#ffffff14;color:#fff}.nav-item.active{color:#fff;background:linear-gradient(90deg,#3974de,#2d63c2);box-shadow:0 5px 14px #031c474d}.nav-icon{font-size:20px;width:22px;text-align:center}.nav-circle{margin-left:auto;font-size:10px;background:#ffcc66;color:#5b3608;border-radius:20px;width:18px;height:18px;display:grid;place-items:center}.sidebar-bottom{margin-top:auto;border-top:1px solid #ffffff24;padding:18px 9px 0}.sidebar-bottom p{font-size:10px;color:#a0b8dc;margin:8px 0}.school-motto{font-size:10px;letter-spacing:.12em;font-weight:800;color:#d9e8ff}.main-panel{min-width:0;flex:1;display:flex;flex-direction:column}.topbar{height:77px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 35px;gap:15px}.topbar-right,.topbar-left{display:flex;align-items:center;gap:14px}.breadcrumb{font-size:12px;color:#8d98a9}.breadcrumb span{padding:0 8px;color:#c6cfdb}.breadcrumb b{color:#4b5d7d}.date-top{font-size:12px;color:#7587a3;margin-right:16px}.avatar{width:38px;height:38px;border-radius:13px;background:#e6efff;display:grid;place-items:center;font-weight:800;color:#255cbd}.top-user{max-width:180px}.top-user strong,.top-user small{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.top-user strong{font-size:12px}.top-user small{font-size:11px;color:var(--muted);margin-top:4px}.logout-link{font-size:25px;color:#8496af;padding:4px}.mobile-menu{display:none}.content{padding:30px 35px 40px;max-width:1600px;width:100%;margin:0 auto;flex:1}.page-heading{display:flex;justify-content:space-between;gap:18px;align-items:center;margin-bottom:27px}.page-heading h1{margin:8px 0;font-size:25px}.page-heading p{font-size:13px;color:var(--muted);margin:0}.eyebrow{font-size:10px;letter-spacing:.17em;font-weight:800;color:#4271ba}.header-status{border:1px solid #dce8ec;border-radius:28px;padding:10px 14px;background:white;white-space:nowrap;color:#477165;font-size:12px;font-weight:700}.online-dot{display:inline-block;width:7px;height:7px;margin:0 5px 0 0;background:#12b886;border-radius:50%;box-shadow:0 0 0 3px #12b88625}.hero-banner{background:linear-gradient(112deg,#174ba9 1%,#1c59cb 62%,#4c85e4);border-radius:19px;display:flex;justify-content:space-between;align-items:center;color:#fff;padding:27px 34px;margin-bottom:22px;overflow:hidden;box-shadow:0 14px 30px #2456ac2d;min-height:194px}.hero-banner h2{font-size:23px;margin:12px 0 9px}.hero-banner p{font-size:13px;max-width:530px;line-height:1.7;color:#e1ecff}.hero-kicker{font-size:10px;letter-spacing:.17em;font-weight:800;color:#b5d0ff}.hero-date{display:inline-block;background:#ffffff24;border:1px solid #ffffff40;border-radius:20px;padding:8px 12px;font-size:12px}.hero-art{min-width:250px;display:grid;place-items:center}.art-orbit{width:160px;height:160px;border-radius:40px;transform:rotate(-11deg);background:#ffffff12;border:1px solid #ffffff30;position:relative;display:grid;place-items:center;box-shadow:inset 0 0 0 22px #ffffff0a}.art-orbit span{font-size:100px;color:#dcecff}.art-orbit i{position:absolute;right:-17px;top:4px;font-size:46px;color:#a9d5ff}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:22px}.stat-card,.surface{background:white;border:1px solid #e9eef5;border-radius:var(--r);box-shadow:var(--shadow)}.stat-card{padding:18px 19px}.stat-label{font-weight:700;font-size:12px;color:#617390;display:flex;align-items:center;justify-content:space-between;gap:10px}.stat-icon{height:32px;width:32px;border-radius:10px;display:grid;place-items:center;font-size:17px}.stat-icon.blue{color:#4374cc;background:#eaf1ff}.stat-icon.green{color:#09a77d;background:#e6f8f0}.stat-icon.orange{color:#d98e20;background:#fff3df}.stat-icon.violet{color:#9471dd;background:#f1ebff}.stat-value{font-size:30px;font-weight:800;font-family:'Plus Jakarta Sans',sans-serif;margin:11px 0 5px;letter-spacing:-.06em}.stat-value.small{font-size:20px;letter-spacing:-.02em;padding-top:5px}.stat-card small{color:#98a4b6}.surface{padding:23px;margin-bottom:19px}.surface h2{margin-bottom:11px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}.section-title h2{margin:0 0 5px}.section-title p{margin:0;color:var(--muted);font-size:12px}.table-wrap{width:100%;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:620px;text-align:left}.data-table th{background:#f5f8fd;color:#70819d;font-size:11px;letter-spacing:.025em;font-weight:700;padding:13px 14px}.data-table th:first-child{border-radius:8px 0 0 8px}.data-table th:last-child{border-radius:0 8px 8px 0}.data-table td{padding:17px 14px;border-bottom:1px solid #eff3f8;font-size:12px;vertical-align:middle}.data-table tr:last-child td{border-bottom:none}.data-table td b{font-size:12px;font-weight:800}.subline{font-size:11px;color:#8593a8;margin-top:7px}.tiny-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:#5b91ec;margin-right:5px;vertical-align:middle}.person-name{font-weight:600;color:#40516c}.time-badge{padding:6px 9px;border-radius:7px;background:#eaf1ff;color:#2a59b6;font-weight:800;white-space:nowrap}.action-row{display:flex;gap:6px;flex-wrap:wrap;align-items:center}.btn{border:1px solid transparent;border-radius:10px;padding:11px 15px;display:inline-flex;align-items:center;gap:7px;justify-content:center;font-weight:700;font-size:12px;white-space:nowrap}.btn:hover{transform:translateY(-1px);filter:brightness(.97)}.btn.primary{background:var(--blue);color:#fff;box-shadow:0 4px 11px #2258c62d}.btn.soft{background:#eef4ff;border-color:#dfebff;color:#3268c4}.btn.green{background:#e5f8f0;color:#0e9d74}.btn.small{font-size:11px;padding:8px 10px;border-radius:8px;box-shadow:none}.btn.danger-outline{color:#c75152;background:#fff6f6;border-color:#f5dada}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.wide{width:100%;justify-content:center}.pill{display:inline-flex;align-items:center;border-radius:20px;padding:6px 10px;font-size:10.5px;font-weight:800;white-space:nowrap}.pill.success{background:#e9f9f1;color:#0f9b76}.pill.waiting{background:#fff5e5;color:#d48d27}.pill.info{background:#eaf1ff;color:#3967b8}.empty{text-align:center;padding:55px 10px;color:#99a9bf}.empty h3{color:#4b6285;margin:12px 0 6px}.empty p{font-size:13px}.empty-icon{width:60px;height:60px;display:grid;place-items:center;border-radius:18px;background:#eef4ff;color:#4b7cce;margin:auto;font-size:32px}.lower-grid,.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.settings-grid{align-items:start}.progress-info{display:flex;justify-content:space-between;font-size:12px;color:#6f83a2;margin:20px 0 8px}.progress-info b{color:#275ac0}.progress-track{height:9px;border-radius:20px;overflow:hidden;background:#e7effa}.progress-track>div{height:100%;background:linear-gradient(90deg,#258be5,#4d75e6);border-radius:20px}.filterbar{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;padding:16px;background:#f7f9fd;border-radius:12px;margin-bottom:18px}.filterbar label{flex:1;min-width:170px;max-width:330px}.filterbar input,.filterbar select{margin-top:7px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.form-grid .full{grid-column:1/-1}label{display:block;font-size:12px;font-weight:700;color:#4c5d77}label small{font-weight:500;color:#97a3b4;display:block;margin-top:5px}input:not([type=checkbox]),select{width:100%;margin-top:8px;padding:12px 13px;border:1px solid #dce4ef;border-radius:9px;background:white;outline:none;font-size:13px;color:#223654}input:focus,select:focus{border-color:#648ad7;box-shadow:0 0 0 3px #3d78d921}input[type=file]{background:#fafcff;border-style:dashed;padding:15px}input[type=file]::file-selector-button{border:0;background:#e9f1ff;color:#245abd;font:700 12px 'DM Sans';border-radius:6px;padding:8px 10px;margin-right:12px;cursor:pointer}.narrow{max-width:820px;margin:0 auto}.assignment-header{display:flex;gap:16px;align-items:center;padding-bottom:23px;border-bottom:1px solid var(--line);margin-bottom:20px}.assignment-header h2{font-size:22px;margin:0 0 7px}.assignment-header p{font-size:13px;color:#677c9c;margin:0 0 5px}.assignment-header small{color:#9aa8ba}.big-class-icon{width:58px;height:58px;display:grid;place-items:center;font-size:29px;background:#eaf1ff;color:#2b62c6;border-radius:14px}.form-note{background:#f2f7ff;border:1px solid #dfebff;color:#5975a3;font-size:12px;line-height:1.6;padding:12px 14px;border-radius:9px;margin-bottom:15px}.lesson-form{display:grid;gap:22px}.lesson-form label{font-size:13px}.field-number{display:inline-grid;place-items:center;width:25px;height:25px;border-radius:8px;background:#eaf1ff;color:#3261ba;margin-right:7px;font-size:11px}.file-ready{display:block;margin-top:7px;color:#169f70;font-size:11px}.form-actions{display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--line);padding-top:19px}.settings-form{display:grid;gap:18px}.settings-form h3{border-bottom:1px solid var(--line);margin:20px 0 0;padding-bottom:11px}.toggle-line{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:10px;padding:14px;gap:16px}.toggle-line b,.toggle-line small{display:block}.toggle-line b{font-size:13px}.toggle-line small{font-size:11px;margin-top:5px}.switch{appearance:none;width:42px;height:24px;min-width:42px;border-radius:40px;background:#cad5e5;position:relative;cursor:pointer}.switch:after{content:'';position:absolute;top:3px;left:3px;background:white;width:18px;height:18px;border-radius:50%;transition:.2s}.switch:checked{background:#2c6bda}.switch:checked:after{transform:translateX(18px)}.settings-logo{width:75px;height:75px;object-fit:contain}.info-pair{padding:15px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;font-size:12px}.info-pair span{color:#8393a9}.info-pair b{font-weight:700;text-align:right}.alert{padding:13px 16px;border-radius:10px;margin-bottom:20px;font-size:12px;line-height:1.6}.alert.error{background:#fff0f0;color:#ad3442;border:1px solid #f4d0d1}.alert.success{background:#e8f9f2;color:#148369;border:1px solid #c6eedd}.alert.warning{background:#fff6e8;color:#966115;border:1px solid #fae5c6}.alert.info{background:#eaf2ff;color:#3f69ad;border:1px solid #d8e8ff;margin-top:18px}.message-preview{white-space:pre-wrap;font:13px/1.8 'DM Sans',sans-serif;background:#f6f9ff;padding:17px;border:1px solid #e4edfa;border-radius:12px}.profile-surface{text-align:center}.profile-icon{width:82px;height:82px;display:grid;place-items:center;background:linear-gradient(135deg,#2d64d4,#8fb7fb);color:#fff;font-size:35px;font-weight:800;border-radius:25px;margin:0 auto 16px}.profile-surface>.info-pair{text-align:left}.main-footer{font-size:11px;color:#96a5ba;padding:15px 35px 23px;display:flex;justify-content:space-between;gap:10px}.auth-body{min-height:100vh;background:radial-gradient(circle at 16% 21%,#1e5fcb,transparent 30%),linear-gradient(135deg,#112f71,#1b50ac 45%,#5a91dc);display:flex;align-items:center;justify-content:center;position:relative;overflow-x:hidden;padding:32px 16px}.auth-deco{position:absolute;border:1px solid #ffffff26;border-radius:50%;pointer-events:none}.deco1{width:480px;height:480px;right:-180px;top:-180px}.deco2{width:350px;height:350px;left:-200px;bottom:-200px}.login-card,.install-card{position:relative;background:#fff;border-radius:25px;padding:36px;box-shadow:0 25px 80px #102a6966;width:100%;max-width:435px}.install-card{max-width:760px}.login-card{text-align:center}.logo-mark{display:grid;place-items:center;width:55px;height:55px;background:#e9f1ff;color:#2662c6;border-radius:16px;font-size:30px;flex-shrink:0}.logo-mark.big{margin:0 auto 18px;width:67px;height:67px;border-radius:22px;font-size:36px}.tag{font-size:10px;letter-spacing:.17em;color:#4d80ce;font-weight:800;margin-bottom:9px}.login-card h1{font-size:27px;margin-bottom:8px}.login-card>p{font-size:13px;color:#8696ac}.tab-readonly{display:flex;background:#f4f7fc;border-radius:10px;padding:5px;margin:24px 0 20px;gap:4px}.tab-readonly span{flex:1;padding:10px 6px;font-weight:700;font-size:12px;color:#6282b9}.tab-readonly span:first-child{background:#fff;box-shadow:0 3px 10px #1f4e8a12;border-radius:8px;color:#2059bc}.login-form{text-align:left;display:grid;gap:18px}.login-form .btn{margin-top:6px;padding:13px}.login-info{font-size:11px!important;line-height:1.8;margin-top:20px}.login-footer{border-top:1px solid #e9eef6;padding-top:18px;margin-top:25px;font-size:10px;letter-spacing:.12em;color:#92a0b4;font-weight:800}.login-brand{display:flex;gap:18px;align-items:center;margin-bottom:14px}.login-brand h1{font-size:22px;margin:0 0 4px}.login-brand p{font-size:13px;color:#8293ac;margin:0}.install-card>.muted{font-size:12px;line-height:1.8}.install-form h3{margin-top:25px;border-bottom:1px solid #e8eef7;padding-bottom:8px}.install-form>.btn{margin-top:25px}.install-form input{margin-top:7px}
@media(max-width:1160px){.stat-grid{grid-template-columns:repeat(2,1fr)}.date-top{display:none}.hero-art{min-width:175px}}
@media(max-width:880px){.sidebar{position:fixed;transform:translateX(-100%);transition:transform .2s}.sidebar.open{transform:translateX(0);box-shadow:0 0 0 200vw #071c4f7a}.mobile-menu{display:block;background:transparent;border:0;color:#2758aa;font-size:22px;margin-right:9px}.content{padding:22px 16px}.topbar{padding:0 16px}.hero-art{display:none}.lower-grid,.settings-grid{grid-template-columns:1fr}.header-status{display:none}.hero-banner{padding:25px}}
@media(max-width:540px){.stat-grid{gap:10px}.stat-card{padding:14px}.stat-value{font-size:25px}.stat-label{font-size:11px}.hero-banner h2{font-size:20px}.page-heading h1{font-size:22px}.top-user,.breadcrumb{display:none}.topbar{height:64px}.surface{padding:16px}.section-title{align-items:flex-start}.section-title>.btn{white-space:normal}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.login-card,.install-card{padding:24px}.main-footer{display:block}.main-footer span{display:block;margin-top:5px}.settings-form{gap:14px}}