:root{--wine:#8f003b;--wine2:#c80043;--navy:#142a43;--teal:#1193a2;--cream:#fff4df;--paper:#fff;--bg:#f3f6f8;--line:#dce5ea;--muted:#7d8da2;--green:#2d8b65;--shadow:0 18px 45px rgba(20,42,67,.08);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--navy);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit;color:inherit}button,a{transition:.18s ease}a{color:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:270px 1fr}.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:28px 20px;background:linear-gradient(180deg,#74002f,#98003e);color:#fff;z-index:30}.logo{display:flex;align-items:baseline;gap:8px;margin:2px 10px 38px;text-decoration:none;font-weight:1000;letter-spacing:.14em}.logo span{font-size:22px}.logo small{font-size:11px;opacity:.9}.nav{display:grid;gap:7px}.nav-link{display:flex;align-items:center;gap:13px;padding:13px 14px;border-radius:13px;text-decoration:none;font-weight:750;color:#f9ddea}.nav-link span{display:grid;place-items:center;width:24px;font-size:19px}.nav-link:hover,.nav-link.active{background:#fff;color:var(--wine)}.sidebar-bottom{margin-top:auto;display:grid;gap:14px}.mode-switch{padding:12px;border:1px solid #ffffff30;border-radius:14px;background:#ffffff12}.mode-switch>span{display:block;margin-bottom:7px;font-size:11px;text-transform:uppercase;letter-spacing:.1em;opacity:.72}.mode-switch select{width:100%;padding:9px 10px;border:0;border-radius:9px;background:#fff;color:var(--navy);font-weight:800}.account-mini{display:flex;align-items:center;gap:10px;text-decoration:none}.account-mini span:not(.avatar){display:grid;gap:2px}.account-mini small{opacity:.7}.logout-link{font-size:13px;opacity:.75}.main-column{min-width:0}.topbar{height:78px;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#ffffffd9;backdrop-filter:blur(12px);position:sticky;top:0;z-index:20}.top-label{font-size:12px;font-weight:950;color:var(--wine2);letter-spacing:.14em}.top-actions{display:flex;align-items:center;gap:13px}.coin-pill{padding:9px 13px;border-radius:999px;background:var(--cream);color:#86551c;font-size:13px;font-weight:800}.menu-button{display:none;border:0;background:none;font-size:22px}.content{width:min(1420px,92%);margin:0 auto;padding:42px 0 70px}.page-heading,.student-heading{margin-bottom:28px}.page-heading.compact{margin-bottom:22px}.eyebrow{display:block;margin-bottom:9px;color:#ae0750;font-size:12px;font-weight:950;letter-spacing:.13em}.page-heading h1,.student-heading h1{margin:0;font-size:clamp(34px,4.5vw,58px);letter-spacing:-.035em;font-weight:500}.page-heading p,.student-heading p{margin:12px 0 0;color:var(--muted);font-size:17px}.card{padding:28px;border:1px 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span{display:block;margin-top:5px;color:var(--muted);font-weight:500}.upload-progress{height:7px;border-radius:999px;background:#e7edf0;overflow:hidden}.upload-progress i{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--teal),var(--wine2));transition:width .2s}.student-heading h1{font-size:56px}.goal-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-bottom:28px}.goal-cards div{display:flex;align-items:center;gap:11px;min-height:82px;padding:18px;border:1px solid #ead8df;border-radius:16px;background:#fff;color:#b10952}.goal-cards strong{color:#633247;font-size:13px}.student-week{display:grid;grid-template-columns:138px 1fr;border:1px solid var(--line);border-radius:24px;background:#fff;overflow:hidden}.student-week>aside{display:flex;align-items:center;flex-direction:column;padding:42px 20px;background:linear-gradient(180deg,#94003e,#d10042);color:#fff}.student-week>aside span{font-size:12px;letter-spacing:.15em}.student-week>aside 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16px;border-radius:12px;background:#eaf8f1;color:#28684d}.toast-static.error,.alert.error{background:#ffe9ee;color:#99143d}.toast{position:fixed;right:24px;bottom:24px;z-index:100;max-width:360px;padding:14px 18px;border-radius:13px;background:var(--navy);color:#fff;box-shadow:var(--shadow);opacity:0;transform:translateY(15px);pointer-events:none}.toast.show{opacity:1;transform:none}.toast.error{background:#a20b3e}.auth-page{min-height:100vh;display:grid;place-items:center;padding:30px;background:radial-gradient(circle at 20% 10%,#bd0c56,#72002e 55%,#4f0022)}.auth-card{width:min(560px,94vw);padding:42px;border-radius:28px;background:#fff;box-shadow:0 30px 90px #2c001c66}.brand-lockup{margin-bottom:30px;font-weight:950;letter-spacing:.14em}.brand-lockup span{color:var(--wine2)}.auth-card h1{margin:7px 0;font-size:38px;letter-spacing:-.03em}.auth-card>p{color:var(--muted)}.auth-card form{display:grid;gap:15px;margin-top:25px}.auth-card label{display:grid;gap:7px;font-weight:800}.success-mark{display:grid;place-items:center;width:64px;height:64px;border-radius:50%;background:#e4f7ed;color:var(--green);font-size:32px}.credentials{display:grid;gap:7px;padding:18px;margin:22px 0;border-radius:14px;background:#f7f2f5}.credentials code{padding:8px;border-radius:8px;background:#fff}.credentials span{margin-top:6px}.auth-note{font-size:13px}.login-row{display:flex;justify-content:space-between;align-items:center}.login-row a{font-size:13px;color:var(--wine)}
.center{min-height:100vh;display:grid;place-items:center;padding:30px;background:radial-gradient(circle at 20% 10%,#bd0c56,#72002e 55%,#4f0022)}.center>.card{width:min(620px,94vw);padding:38px;box-shadow:0 30px 90px #2c001c66}.center>.card .brand{color:var(--wine2);font-weight:950;letter-spacing:.14em}.center>.card form{display:grid;gap:14px}.center>.card label{display:grid;gap:7px;font-weight:800}.center>.card hr{width:100%;border:0;border-top:1px solid var(--line)}
@media(max-width:1100px){.app-shell{grid-template-columns:230px 1fr}.content{width:94%}.week-header{grid-template-columns:100px 1fr}.participants{grid-column:2;justify-items:start}.profile-layout{grid-template-columns:1fr}.goal-cards{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr 1fr}}
@media(max-width:780px){.app-shell{display:block}.sidebar{position:fixed;left:-285px;width:270px;transition:left .22s;box-shadow:20px 0 50px #17283b44}.sidebar.open{left:0}.menu-button{display:block}.topbar{height:66px;padding:0 18px}.top-label{display:none}.content{width:92%;padding-top:26px}.two-columns,.material-grid,.form-grid{grid-template-columns:1fr}.week-tabs{display:flex;overflow:auto;padding-bottom:5px}.week-tab{min-width:180px}.week-header{grid-template-columns:76px 1fr;padding:20px;gap:16px}.week-number{min-height:100px}.week-number b{font-size:42px}.week-header h2{font-size:27px}.participants{grid-column:1/-1;justify-items:start}.topic-pills,.lecturer-materials{padding-left:20px;padding-right:20px}.material-title{padding-left:20px;padding-right:20px}.student-week{grid-template-columns:1fr}.student-week>aside{padding:14px;flex-direction:row;justify-content:center;gap:13px}.student-week>aside b{font-size:34px}.student-week>aside i{margin:0}.student-week-main{padding:24px 18px}.student-heading h1{font-size:42px}.goal-cards{grid-template-columns:1fr 1fr}.profile-card,.badge-card{padding:20px}.avatar-editor{align-items:flex-start}.student-row{flex-wrap:wrap}.student-row>span{font-size:11px}}
@media(max-width:520px){.coin-pill{display:none}.goal-cards{grid-template-columns:1fr}.student-materials .material-card{min-height:96px}.student-materials .material-card>div{max-width:calc(100vw - 185px)}.auth-card{padding:28px 22px}.avatar-editor{display:grid}.badges{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr}.page-heading h1,.student-heading h1{font-size:36px}.top-actions .avatar{display:none}}
.auth-language{display:flex;justify-content:flex-end;gap:8px;margin-bottom:12px;font-weight:800}.auth-language a{color:#a9004d;text-decoration:none}.auth-language a:hover{text-decoration:underline}