:root{--bg0:#070a12;--bg1:#0b1020;--glass:rgba(255,255,255,.06);--glass-strong:rgba(255,255,255,.1);--stroke:rgba(255,255,255,.1);--stroke-strong:rgba(255,255,255,.16);--text:#eaf0ff;--muted:rgba(234,240,255,.62);--muted-soft:rgba(234,240,255,.42);--muted2:rgba(234,240,255,.55);--blue:#4da3ff;--blue-dark:#2e6dff;--green:#31d09a;--orange:#ff9f43;--radius-lg:24px;--radius-md:18px;--radius-sm:14px;--shadow-lg:0 24px 56px rgba(0,0,0,.5);--shadow-md:0 16px 34px rgba(0,0,0,.4);--shadow-sm:0 10px 24px rgba(0,0,0,.26)}*,*:before,*:after{box-sizing:border-box}html,body{min-height:100%;overflow-x:hidden;scroll-behavior:smooth}body.modal-open{overflow:hidden}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(1200px 600px at 35% 10%,rgba(77,163,255,.16),transparent 55%),radial-gradient(900px 520px at 70% 25%,rgba(255,159,67,.12),transparent 55%),radial-gradient(1200px 900px at 50% 90%,#000000a6,#000000e0),linear-gradient(180deg,var(--bg1),var(--bg0));background-attachment:fixed;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='2'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.07'/%3E%3C/svg%3E");opacity:.06;z-index:0}img{max-width:100%;display:block}a{color:inherit}button,input,select,textarea{font:inherit}.glass-card:before,.glass:before,.card:before{pointer-events:none}.glass{background:linear-gradient(180deg,#ffffff1a,#ffffff0a);border:1px solid var(--stroke);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transform:translateZ(0);backface-visibility:hidden}.glass-card{background:linear-gradient(180deg,#ffffff17,#ffffff0d);border:1px solid var(--stroke);border-radius:var(--radius-md);box-shadow:var(--shadow-md);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);position:relative;overflow:hidden;transform:translateZ(0);backface-visibility:hidden}.glass-card:before{content:"";position:absolute;inset:0;background:radial-gradient(420px 260px at 25% 15%,rgba(255,255,255,.08),transparent 55%),radial-gradient(360px 240px at 90% 10%,rgba(77,163,255,.08),transparent 60%);opacity:.72}.card{background:linear-gradient(180deg,#ffffff17,#ffffff0d);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:16px;box-shadow:var(--shadow-md);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);position:relative;overflow:hidden;transform:translateZ(0);backface-visibility:hidden}.card:before{content:"";position:absolute;inset:0;background:radial-gradient(420px 260px at 25% 15%,rgba(255,255,255,.08),transparent 55%),radial-gradient(360px 240px at 90% 10%,rgba(77,163,255,.08),transparent 60%);opacity:.74}.card .inner,.glass-card .inner{position:relative;z-index:1}.h1{font-size:20px;font-weight:700}.h2{font-size:16px;font-weight:700}.h3{font-size:13px;font-weight:600}.text-muted{color:var(--muted)}.text-soft{color:var(--muted-soft)}.btn{height:34px;padding:0 18px;margin-right:10px;border-radius:var(--radius-sm);border:1px solid var(--stroke);background:var(--glass);color:var(--text);font-weight:500;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn:active{transform:translateY(0)}.btn-primary,.btn.primary{background:linear-gradient(135deg,var(--blue),var(--blue-dark));border:none;box-shadow:0 10px 24px #4da3ff47}.btn-success{background:#31d09a24;border:1px solid rgba(49,208,154,.3)}.btn-warning{background:#ff9f432e;border:1px solid rgba(255,159,67,.3)}.btn.start{background:linear-gradient(135deg,#31d09af2,#1da678f2);border:none;box-shadow:0 10px 24px #31d09a3d}.center{display:flex;align-items:center;justify-content:center}.stack{display:flex;flex-direction:column;gap:18px}.row{display:flex;gap:16px}.page{position:relative;z-index:1;padding:16px}.grid{position:relative;z-index:1;display:grid;grid-template-columns:300px 1fr 370px;gap:18px;padding:6px 8px 2px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;width:100%}.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;width:100%}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 18px}.nav{display:flex;gap:28px}.nav a{text-decoration:none;color:var(--muted);font-weight:500;position:relative}.nav a.active{color:var(--text)}.nav a.active:after{content:"";position:absolute;left:10%;right:10%;bottom:-8px;height:3px;border-radius:999px;background:linear-gradient(90deg,transparent,var(--blue),transparent)}input,.input,select,textarea{width:100%;height:36px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--stroke);background:linear-gradient(180deg,#ffffff1a,#ffffff0a);color:var(--text);font-size:12px;font-weight:500;outline:none;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:border .2s ease,box-shadow .2s ease,background .2s ease}input::placeholder,.input::placeholder,textarea::placeholder{color:var(--muted-soft);font-weight:500}input:focus,.input:focus,select:focus,textarea:focus{border-color:#4da3ff73;box-shadow:0 0 0 1px #4da3ff40,0 8px 20px #4da3ff24;background:linear-gradient(180deg,#ffffff1f,#ffffff0f)}.input:disabled,select:disabled,textarea:disabled{opacity:.45;cursor:not-allowed}textarea{min-height:110px;height:auto;padding:12px 14px;resize:vertical}input[type=date]{color:var(--muted)}input[type=date]::-webkit-calendar-picker-indicator{filter:invert(1);opacity:.7}input[type=file]{height:auto;padding:10px;font-size:12px;cursor:pointer}select{padding:0 36px 0 14px;background-color:#ffffff0f;appearance:none;-webkit-appearance:none;-moz-appearance:none;color:var(--text)!important;color-scheme:dark}select option{background-color:#474747!important;color:#eaf0ff!important}input[type=checkbox]{appearance:none;width:18px;height:18px;border-radius:6px;background:var(--glass);border:1px solid var(--stroke);display:inline-grid;place-items:center;cursor:pointer;margin-top:2px}input[type=checkbox]:checked{background:linear-gradient(135deg,var(--blue),var(--blue-dark));border-color:transparent}input[type=checkbox]:checked:after{content:"\2714";font-size:12px;font-weight:900;color:#fff}input[type=radio]{appearance:none;width:18px;height:18px;border-radius:50%;background:var(--glass);border:1px solid var(--stroke);display:grid;place-items:center;cursor:pointer}input[type=radio]:checked{border-color:var(--blue)}input[type=radio]:checked:after{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:12px;font-weight:600;color:var(--muted)}.input.error{border-color:#ff505099;box-shadow:0 0 0 1px #ff50504d}.form-error{font-size:12px;color:#ff6b6b;margin-top:4px}.input.sm{height:36px;font-size:12px}.input.lg{height:52px;font-size:15px}.filters{display:flex;gap:12px;margin:10px 0 18px}.filters input,.filters select{height:36px;border-radius:14px;background:var(--glass);border:1px solid var(--stroke);color:var(--text);padding:0 14px}.select{flex:1;height:40px;border-radius:14px;padding:0 12px;display:flex;align-items:center;justify-content:space-between;background:#ffffff0d;border:1px solid rgba(255,255,255,.08);color:#eaf0ffdb;font-weight:600;font-size:13px}.select small{color:var(--muted2);font-weight:600}.dots{width:40px;flex:0 0 40px;justify-content:center}.studentsRow{display:flex;align-items:center;justify-content:space-between;margin-top:6px}.studentsRow b{font-size:14px}.toggle{display:flex;align-items:center;gap:10px;padding:6px 10px;border-radius:999px;background:#31d09a1a;border:1px solid rgba(49,208,154,.18);font-size:12px;font-weight:700;color:#eaf0ffe6}.dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px #31d09a24}.chartLine{position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 200'%3E%3Cpath d='M20 160 C80 60, 140 180, 210 120 C280 60, 340 160, 420 90 C500 30, 560 140, 580 70' fill='none' stroke='%234da3ff' stroke-width='4' stroke-linecap='round' opacity='.8'/%3E%3Ccircle cx='210' cy='120' r='6' fill='%23ffffff' opacity='.65'/%3E%3Ccircle cx='420' cy='90' r='6' fill='%23ffffff' opacity='.65'/%3E%3C/svg%3E") center/cover no-repeat;opacity:.82;filter:drop-shadow(0 8px 14px rgba(77,163,255,.16))}.studentGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.stu{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;background:#ffffff0d;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:transform .18s ease,box-shadow .18s ease,background .18s ease;border:1px solid rgba(255,255,255,.06)}.stu:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}.performGrid{display:grid;grid-template-columns:1fr;gap:12px}.perf{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;border-radius:16px;background:#ffffff0d;border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.p{display:flex;align-items:center;gap:12px}.p img{width:42px;height:42px;border-radius:14px;object-fit:cover}.score{font-weight:800;color:#31d09af2}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:16px}.header h1{margin:0;font-size:25px}.header .btns{display:flex;gap:12px;flex-wrap:wrap}table{width:100%;border-collapse:collapse}th,td{padding:14px;font-size:11px;border-bottom:1px solid rgba(255,255,255,.08)}th{text-align:left;color:var(--muted);font-size:12px}.user{display:flex;align-items:center;gap:12px}.user img{width:42px;height:42px;border-radius:14px}.tag{padding:4px 10px;border-radius:10px;background:#ffffff0f;font-size:10px;margin-right:6px}.physics{background:#ff9f4340}.history{background:#4da3ff40}.english{background:#31d09a40}.math{background:#4da3ff33}.status{font-weight:600}.active{color:var(--green)}.leave{color:var(--orange)}.actions-col{font-size:12px;opacity:.85}.actions-col span{cursor:pointer;padding:6px;margin-right:6px;border-radius:8px;transition:background .2s ease,color .2s ease;font-size:12px}.actions-col span:hover{background:#ffffff1a}.footer{display:flex;justify-content:space-between;margin-top:14px;font-size:12px;color:var(--muted)}.green{background:var(--green)}.orange{background:var(--orange)}.gray{background:#777}.titleRow{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.title{font-size:14px;font-weight:700}.sub{font-size:12px;color:var(--muted)}.chip{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:26px;padding:0 10px;border-radius:999px;font-size:11px;font-weight:700;color:#fff}.chip.blue{background:#4da3ff33;border:1px solid rgba(77,163,255,.25);color:#dfeeff}.chip.green{background:#31d09a2e;border:1px solid rgba(49,208,154,.25);color:#dcfff3}.chip.orange{background:#ff9f432e;border:1px solid rgba(255,159,67,.25);color:#ffeddc}.chip.gray{background:#ffffff1a;border:1px solid rgba(255,255,255,.12);color:#eef3ff}.list{display:flex;flex-direction:column;gap:12px}.item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;border-radius:16px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.leftInfo{display:flex;align-items:center;gap:12px;min-width:0}.meta{min-width:0;display:flex;flex-direction:column;gap:4px}.meta b{font-size:13px}.meta small{color:var(--muted);font-size:11px}.appIcon,.face{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:#ffffff12;border:1px solid rgba(255,255,255,.1)}.examRow{display:flex;flex-direction:column;gap:12px}.exam{display:flex;align-items:center;gap:12px;padding:12px;border-radius:16px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}@media (max-width:768px){.responsive-table thead{display:none}.responsive-table,.responsive-table tbody,.responsive-table tr{display:block;width:100%}.responsive-table tr{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:14px;margin-bottom:14px}.responsive-table td{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0;border:none;font-size:13px}.responsive-table td:before{content:attr(data-label);font-weight:600;color:var(--muted);flex:0 0 90px}.responsive-table td.user{justify-content:flex-start;gap:12px}.responsive-table td.user:before,.responsive-table td:first-child:before{display:none}}.page,.grid,.grid-2,.grid-3,.grid-4,.grid-5,.stack,.row{position:relative;z-index:1}.card,.glass,.glass-card,.stu,.exam,.perf,.item,.select,.btn,.input,textarea,table{will-change:auto}.card,.glass-card,.stu,.exam,.perf,.item{contain:paint}@media (max-width:1200px){.grid{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-5{grid-template-columns:repeat(3,1fr)}}@media (max-width:900px){.grid-3,.grid-4,.grid-5,.grid-2{grid-template-columns:1fr}.row,.header{flex-direction:column;align-items:stretch}.topbar{flex-direction:column;gap:14px;align-items:stretch}.nav{flex-wrap:wrap;gap:16px}}@media (max-width:768px){body:before{display:none}.page{padding:12px}.card{padding:14px;border-radius:18px}.header h1{font-size:21px}th,td{padding:12px}}.page-wrap{display:flex;flex-direction:column;gap:18px}.section-space{margin-top:6px}.page-hero{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.page-hero .hero-left{display:flex;flex-direction:column;gap:6px}.page-hero .hero-right{display:flex;gap:10px;flex-wrap:wrap}.course-cover{height:160px;border-radius:18px;display:grid;place-items:center;font-size:42px;background:linear-gradient(135deg,#4da3ff2e,#31d09a24);border:1px solid rgba(255,255,255,.08);margin-bottom:14px}.progress-line{width:100%;height:8px;border-radius:999px;background:#ffffff0f;overflow:hidden;margin:10px 0 14px}.progress-line span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--green))}.kpi-box{padding:14px;border-radius:18px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08)}.kpi-label{font-size:12px;color:var(--muted)}.kpi-value{font-size:22px;font-weight:800;margin-top:4px}.avatar-xl{width:86px;height:86px;border-radius:24px;object-fit:cover;border:1px solid rgba(255,255,255,.14)}.profile-top{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.profile-user{display:flex;align-items:center;gap:16px}.info-list{display:flex;flex-direction:column;gap:12px}.info-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}.info-row:last-child{border-bottom:none}.info-label{color:var(--muted);font-size:12px}.info-value{font-size:13px;font-weight:600;text-align:right}.quiz-palette{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.quiz-palette .qbox{height:42px;border-radius:14px;display:grid;place-items:center;background:#ffffff0d;border:1px solid rgba(255,255,255,.08);font-weight:700}.timeline-list{display:flex;flex-direction:column;gap:12px}.timeline-item{display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:16px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08)}.timeline-dot{width:12px;height:12px;border-radius:999px;margin-top:6px;background:var(--blue);box-shadow:0 0 0 6px #4da3ff1f}@media (max-width: 900px){.quiz-palette{grid-template-columns:repeat(4,1fr)}}@media (max-width: 600px){.quiz-palette{grid-template-columns:repeat(3,1fr)}.profile-top,.profile-user{align-items:flex-start}.info-row{flex-direction:column;gap:6px}.info-value{text-align:left}}