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var(--pdf-border);border-radius:10px}.hint{color:var(--muted)}.date-box{display:inline-flex;flex-wrap:wrap;max-width:100%;border-radius:12px;overflow:hidden;border:1px solid transparent;background:linear-gradient(transparent,transparent) padding-box,var(--glass-border) border-box;box-shadow:var(--glass-shadow);vertical-align:middle;font-size:.92rem}.date-box .date-part{background:#4f46e5;color:#fff}.date-box .date-part,.date-box .time-part{padding:6px 12px;font-weight:700;white-space:nowrap}.date-box .time-part{background:var(--datebox-time-bg);color:var(--datebox-time-text)}.countdown{display:inline-block;background:linear-gradient(var(--countdown-bg),var(--countdown-bg)) padding-box,var(--glass-border) border-box;border:1px solid transparent;color:var(--countdown-text);border-radius:999px;padding:4px 10px;font-size:.88rem;font-weight:700;white-space:nowrap;vertical-align:middle}.countdown.overdue{background:linear-gradient(var(--countdown-over-bg),var(--countdown-over-bg)) padding-box,var(--glass-border) border-box;color:var(--countdown-over-text)}.progress-ring{flex-shrink:0}.btn.wa{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;text-decoration:none;display:inline-block;box-shadow:0 4px 16px rgba(34,197,94,.35),inset 0 1px 0 hsla(0,0%,100%,.35)}.chip{padding:8px 14px;border-radius:999px;border:1px solid transparent;background:linear-gradient(var(--glass-bg),var(--glass-bg)) padding-box,var(--glass-border) border-box;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:var(--chip-text);cursor:pointer;font-size:.95rem;box-shadow:var(--glass-shadow);transition:filter .15s ease}.chip:hover{background:linear-gradient(var(--chip-hover),var(--chip-hover)) padding-box,var(--glass-border) border-box;filter:brightness(1.04)}.logo-btn{background:none;border:none;padding:0;cursor:pointer;text-align:left;font:inherit;color:inherit}.logo-btn h1{margin:0;font-size:1.6rem;color:var(--heading);display:flex;align-items:center;gap:10px}.logo-btn.logo-large h1{font-size:2rem}.logo-mark{flex-shrink:0;display:block}.header-centered .logo-btn h1,.mascot{justify-content:center}.mascot{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}.mascot svg{display:block;animation:mascot-bob 2.6s ease-in-out infinite}.mascot-bubble{background:linear-gradient(var(--glass-bg),var(--glass-bg)) padding-box,var(--glass-border) border-box;border:1px solid transparent;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:14px;padding:10px 14px;font-size:1rem;color:var(--bubble-text);box-shadow:var(--glass-shadow),var(--glass-inset);position:relative;max-width:250px;text-align:start}.mascot-bubble:before{content:"";position:absolute;left:-7px;top:50%;width:12px;height:12px;background:var(--bubble-bg);border-left:1px solid var(--bubble-border);border-bottom:1px solid var(--bubble-border);transform:translateY(-50%) rotate(45deg)}[dir=rtl] .mascot-bubble:before{left:auto;right:-7px;border-left:none;border-right:1px solid var(--bubble-border)}.mascot-eyes{animation:mascot-blink 4.5s infinite;transform-box:fill-box;transform-origin:center}.mascot-arm{transform-box:fill-box;transform-origin:50% 0}.mascot-happy .mascot-arm,.mascot-hello .mascot-arm{animation:mascot-wave .9s ease-in-out infinite}.mascot-happy svg{animation:mascot-bounce .9s ease-in-out infinite}.mascot-thinking .mascot-arm{transform:rotate(-115deg)}.mascot-thinking svg{animation-duration:3.6s}.mascot-waiting .mascot-eyes{animation:mascot-look 3s ease-in-out infinite}.mascot-oops svg{animation:none;transform:rotate(-3deg)}.mascot-dots i{font-style:normal;animation:mascot-dot 1.2s infinite}.mascot-dots i:nth-child(2){animation-delay:.2s}.mascot-dots i:nth-child(3){animation-delay:.4s}.mascot-welcome{display:flex;align-items:center;gap:12px;margin:4px 0 8px;flex-wrap:wrap}.mascot-welcome p{margin:2px 0 0;color:var(--muted-2)}@keyframes mascot-bob{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes mascot-bounce{0%,to{transform:translateY(0)}40%{transform:translateY(-14px)}}@keyframes mascot-blink{0%,92%,to{transform:scaleY(1)}95%{transform:scaleY(.08)}}@keyframes mascot-wave{0%,to{transform:rotate(0deg)}50%{transform:rotate(-30deg)}}@keyframes mascot-look{0%,to{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}@keyframes mascot-dot{0%,60%,to{opacity:.25}30%{opacity:1}}@media (prefers-reduced-motion:reduce){.bg-shapes i,.mascot svg,.mascot-arm,.mascot-dots i,.mascot-eyes,.skeleton{animation:none!important}.big-btn,.btn,.chip,.stat-tile,.tabs button{transition:none!important}.big-btn:hover,.btn:hover:not(:disabled),.stat-tile:hover{transform:none!important}}@media (max-width:700px){.role-cards,.split{grid-template-columns:1fr}.pdf-frame{height:320px}.big-btn{min-height:84px;font-size:1.15rem}.assignment-row{flex-direction:column;align-items:stretch;gap:12px}.assignment-info{flex:1 1 auto}.assignment-actions{width:100%;flex-direction:column;align-items:stretch}.assignment-actions .btn{width:100%;white-space:normal}.btn{padding:12px 18px}.tabs button{padding:12px 14px}.theme-toggle{width:44px;height:44px}.lang-switch button{padding:12px 16px}.chip{padding:11px 16px}.card label>input:not([type=file]),.card label>select,.card label>textarea{width:100%;padding:12px;border:1px solid var(--input-border);border-radius:10px;font-size:1rem;background:var(--input-bg);color:var(--input-text)}.card label>input[type=file]{width:100%}.card input,.card select,.card textarea{font-size:1rem}.table-wrap{display:none}.students-cards{display:block}}@media (max-width:480px){.header h1,.logo-btn h1{font-size:1.3rem}.logo-btn.logo-large h1{font-size:1.6rem}}.modal-backdrop{position:fixed;inset:0;z-index:100;background:rgba(15,23,42,.55);display:flex;align-items:center;justify-content:center;padding:16px}.modal{width:100%;max-width:720px;max-height:85vh;overflow-y:auto;overscroll-behavior:contain;background:linear-gradient(var(--glass-bg-strong),var(--glass-bg-strong)) padding-box,var(--glass-border) border-box;border:1px solid transparent;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35),var(--glass-inset);padding:20px;overflow-wrap:break-word}.modal-note{color:var(--muted);font-size:.85rem;margin:4px 0}@media (max-width:700px){.modal-backdrop{padding:12px}.modal{max-height:88vh;padding:16px;border-radius:14px}}