:root{--color-primary:#1a5fcc;--color-primary-hover:#1247a8;--color-primary-active:#0e3e8a;--color-primary-rgb:26, 95, 204;--color-primary-tint:#ebf1ff;--color-secondary:#7db87a;--color-secondary-hover:#5e9c5b;--color-accent:#f26522;--color-accent-hover:#c44e16;--color-accent-tint:#fdf0ea;--color-accent-tint-hover:#fae1d5;--color-accent-tint-active:#f5d2c0;--color-accent-border:#c44e16;--color-accent-text:#a33f0e;--color-highlight:#ffd966;--color-bg:#f5f7fa;--color-surface:#fff;--color-surface-dark:#1a2744;--color-text-primary:#1a1d23;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-border:#e5e7eb;--color-border-strong:#d1d5db;--color-error:#ef4444;--color-error-strong:#b91c1c;--color-success:#22c55e;--color-success-strong:#15803d;--brand-gradient:linear-gradient(135deg, #1a5fcc 0%, #1a2744 100%);--font-brand:"Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-ui:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-pill:24px;--radius-full:9999px;--shadow-card:0 1px 4px #0000000f;--shadow-sm:0 1px 2px 0 #0000000d;--shadow:0 4px 6px -1px #00000014, 0 2px 4px -2px #00000014;--shadow-md:0 10px 15px -3px #00000014, 0 4px 6px -4px #00000014;--shadow-lg:0 20px 25px -5px #0000001a, 0 8px 10px -6px #0000001a;--transition-fast:.15s ease;--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--primary:var(--color-primary);--primary-hover:var(--color-primary-hover);--primary-rgb:var(--color-primary-rgb);--secondary:var(--color-secondary);--secondary-hover:var(--color-secondary-hover);--accent:var(--color-accent);--accent-hover:var(--color-accent-hover);--accent-rgb:242, 101, 34;--highlight:var(--color-highlight);--highlight-hover:#e9be3f;--success:var(--color-success);--success-strong:var(--color-success-strong);--success-hover:#16a34a;--danger:var(--color-error);--danger-strong:var(--color-error-strong);--warning:#ca8a04;--info:var(--color-primary);--bg-main:var(--color-bg);--bg-card:var(--color-surface);--text-primary:var(--color-text-primary);--text-secondary:var(--color-text-secondary);--text-muted:var(--color-text-muted);--border-light:var(--color-border);--border-hover:var(--color-border-strong)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-brand);color:var(--color-text-primary);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px;line-height:1.45}h1,h2,h3,h4,h5,h6{font-family:var(--font-brand);color:var(--color-text-primary);letter-spacing:-.01em}h1{font-size:32px;font-weight:700;line-height:40px}h2{font-size:24px;font-weight:600;line-height:32px}h3{font-size:18px;font-weight:600;line-height:26px}h4{font-size:16px;font-weight:500;line-height:22px}h5{font-size:14px;font-weight:600;line-height:20px}h6{font-size:12px;font-weight:600;line-height:16px}.type-display{font-family:var(--font-brand);letter-spacing:-.02em;font-size:40px;font-weight:700;line-height:48px}.type-body-lg{font-size:16px;line-height:24px}.type-caption{font-size:12px;line-height:16px}.type-data{font-family:var(--font-ui);font-size:14px;line-height:20px}:where(a,button,input,textarea,select,[tabindex]):focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 1.5rem}.block{display:block}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.grid{display:grid}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}@media (width<=1024px){.grid-cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=768px){.grid-cols-2,.grid-cols-3{grid-template-columns:repeat(1,minmax(0,1fr))}}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.gap-8{gap:2rem}.p-4{padding:1rem}.p-6{padding:1.5rem}.p-8{padding:2rem}.m-b-4{margin-bottom:1rem}.m-b-6{margin-bottom:1.5rem}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);transition:transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);overflow:hidden}.card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-strong);transform:translateY(-2px)}.card-dark{background:var(--color-surface-dark);color:#fff;border:none;border-radius:10px;overflow:hidden}.card-dark .card-dark-title{font-family:var(--font-brand);color:#fff;font-size:15px;font-weight:600}.card-dark .card-dark-accent{color:#8fb3f0}.card-dark .card-dark-timestamp{color:#fff;border-radius:var(--radius-sm);background:#00000080;padding:2px 6px;font-size:12px;line-height:16px;position:absolute;bottom:8px;right:8px}.glass-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.btn{border-radius:var(--radius-xl);min-height:44px;font-family:var(--font-brand);cursor:pointer;transition:background-color var(--transition-fast), border-color var(--transition-fast), color 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.15)}.input.is-error{border-color:var(--color-error)}textarea.input{min-height:100px}select.input{color:var(--color-text-primary)}::placeholder{color:var(--color-text-secondary);opacity:1}.input-search{background:var(--color-bg);border-radius:var(--radius-pill);font-family:var(--font-brand);padding:10px 16px 10px 40px}.input-search-icon{color:var(--color-text-muted);pointer-events:none;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.password-field{position:relative}.password-field .input{padding-right:42px}.password-field .input::-ms-reveal{display:none}.password-field .input::-ms-clear{display:none}.input-reveal{border-radius:var(--radius-sm);width:32px;height:32px;color:var(--color-text-secondary);cursor:pointer;transition:color var(--transition-fast), background var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:0;display:flex;position:absolute;top:50%;right:5px;transform:translateY(-50%)}.input-reveal:hover{color:var(--color-text-primary);background:var(--color-bg)}.input-reveal:focus-visible{outline-offset:0}label.field-label{font-family:var(--font-brand);color:var(--color-text-secondary);margin-bottom:.35rem;font-size:12px;font-weight:600;line-height:16px;display:block}.badge{font-family:var(--font-brand);background:var(--color-primary-tint);color:var(--color-primary);text-transform:uppercase;letter-spacing:.3px;border-radius:20px;align-items:center;gap:.25rem;padding:2px 10px;font-size:12px;font-weight:600;line-height:16px;display:inline-flex}.badge-success{color:#15803d;background:#dcfce7}.badge-warning{color:#a16207;background:#fef9c3}.badge-muted{color:#4b5563;background:#f3f4f6}.badge-accent{background:var(--color-accent-tint);color:var(--color-accent-text)}.badge-highlight{background:var(--color-highlight);color:var(--color-text-primary)}.category-label{font-family:var(--font-brand);letter-spacing:.8px;text-transform:uppercase;color:var(--color-primary);font-size:12px;font-weight:600}.eyebrow{font-family:var(--font-brand);letter-spacing:.3px;border-radius:var(--radius-pill);background:var(--color-accent-tint);color:var(--color-accent-text);align-items:center;gap:.4rem;padding:6px 14px;font-size:12px;font-weight:600;line-height:16px;display:inline-flex}.brand-text{color:var(--color-primary)}.science-grid{background-image:radial-gradient(rgba(var(--primary-rgb), .08) 1px, transparent 1px);background-size:22px 22px}@keyframes float-orbit{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.float-orbit{animation:5s ease-in-out infinite float-orbit}.spinner{border:3px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.switch{width:44px;height:24px;display:inline-block;position:relative}.switch input{opacity:0;width:0;height:0}.switch .slider{cursor:pointer;background:var(--border-hover);transition:var(--transition-fast);border-radius:9999px;position:absolute;inset:0}.switch .slider:before{content:"";width:18px;height:18px;transition:var(--transition-fast);background:#fff;border-radius:50%;position:absolute;bottom:3px;left:3px}.switch input:checked+.slider{background:var(--primary)}.switch input:checked+.slider:before{transform:translate(20px)}.switch input:disabled+.slider{opacity:.5;cursor:not-allowed}.celebrate-burst{pointer-events:none;z-index:1;position:absolute;inset:0;overflow:visible}.celebrate-burst span{opacity:0;width:8px;height:8px;animation:.9s cubic-bezier(.16,1,.3,1) forwards celebrate-burst;animation-delay:var(--delay,0s);border-radius:50%;position:absolute;top:50%;left:24px}@keyframes celebrate-burst{0%{opacity:1;transform:rotate(var(--angle)) translateY(0) scale(1)}70%{opacity:.9}to{opacity:0;transform:rotate(var(--angle)) translateY(calc(var(--distance) * -1)) scale(.35)}}.celebrate-pop{animation:.46s cubic-bezier(.34,1.56,.64,1) both celebrate-pop}@keyframes celebrate-pop{0%{opacity:0;transform:scale(.3)}60%{opacity:1;transform:scale(1.18)}to{opacity:1;transform:scale(1)}}@media (prefers-reduced-motion:reduce){.celebrate-burst{display:none}.celebrate-pop{animation:none}}.modal-backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:50;background:#1a27448c;justify-content:center;align-items:flex-start;padding:3rem 1.5rem;display:flex;position:fixed;inset:0;overflow-y:auto}.modal{background:var(--bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);flex-direction:column;width:100%;max-width:620px;max-height:calc(100vh - 6rem);margin:auto;display:flex}.modal-header,.modal-footer{flex-shrink:0;padding:1.25rem 1.5rem}.modal-header{border-bottom:1px solid var(--border-light)}.modal-footer{border-top:1px solid var(--border-light);flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:.75rem;display:flex}.modal-body{flex:1;padding:1.25rem 1.5rem;overflow-y:auto}.card-menu{z-index:60;background:var(--bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);min-width:200px;box-shadow:var(--shadow-lg);flex-direction:column;padding:6px;display:flex;position:fixed}.card-menu-item{border-radius:var(--radius-md);width:100%;color:var(--text-primary);text-align:left;cursor:pointer;background:0 0;border:none;align-items:center;gap:.6rem;padding:9px 10px;font-family:inherit;font-size:.9rem;display:flex}.card-menu-item:hover{background:var(--bg-main)}.card-menu-item:focus-visible{outline:2px solid var(--color-primary);outline-offset:-2px}.icon-btn{color:var(--color-text-secondary);cursor:pointer;border-radius:var(--radius-md);background:0 0;border:none;justify-content:center;align-items:center;min-width:44px;min-height:44px;padding:4px;display:inline-flex}.icon-btn:hover{background:var(--bg-main);color:var(--text-primary)}.icon-btn:disabled{opacity:.4;cursor:not-allowed}.tab-strip{border-bottom:1px solid var(--border-light);flex-wrap:wrap;gap:.5rem;padding-bottom:.75rem;display:flex}.tab{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:2px solid #0000;border-radius:10px;align-items:center;gap:.45rem;padding:.5rem 1rem;font-family:inherit;font-size:.85rem;font-weight:600;display:inline-flex}.tab:hover{background:var(--bg-main);color:var(--text-primary)}.tab.is-active{background:rgba(var(--primary-rgb), .1);border-color:var(--primary);color:var(--primary)}.calendar-grid{background:var(--border-light);border:1px solid var(--border-light);border-radius:12px;grid-template-columns:repeat(7,minmax(0,1fr));gap:1px;display:grid;overflow:hidden}.calendar-cell{background:var(--bg-card);flex-direction:column;gap:4px;min-height:92px;padding:6px;display:flex}.calendar-cell.is-outside{background:var(--bg-main)}.calendar-cell.is-today{box-shadow:inset 0 0 0 2px var(--highlight)}.calendar-head{background:var(--bg-main);letter-spacing:.4px;text-transform:uppercase;min-height:0;color:var(--text-muted);text-align:center;padding:8px 6px;font-size:12px;font-weight:700}.toast{z-index:100;background:var(--bg-card);border:1px solid var(--border-light);border-left:4px solid var(--success);max-width:380px;box-shadow:var(--shadow-lg);border-radius:12px;align-items:center;gap:.75rem;padding:.85rem 1rem;animation:.22s ease-out both toast-in;display:flex;position:fixed;bottom:1.5rem;right:1.5rem}@keyframes toast-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.toast{animation:none}}.calendar-chip{color:#fff;cursor:pointer;text-align:left;text-overflow:ellipsis;white-space:nowrap;border:none;border-radius:6px;padding:3px 6px;font-size:12px;font-weight:600;overflow:hidden}.assigned-item{color:var(--color-text-primary);border-radius:8px;margin:0 -6px;padding:4px 6px;text-decoration:none}.assigned-item.is-link:hover,.assigned-item.is-link:focus-visible{background:var(--color-primary-tint);text-decoration:none}.assigned-item.is-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:1px}.assignment-grid{grid-template-columns:repeat(auto-fill,minmax(13rem,1fr));gap:.75rem;display:grid}.assignment-tile{flex-direction:column;gap:.6rem;min-height:15rem;padding:.9rem .85rem;display:flex}.assignment-tile.is-focused{outline:2px solid var(--color-primary);outline-offset:-2px}.assignment-tile-head{flex-direction:column;gap:.15rem;display:flex}.assignment-tile-title{-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;font-weight:700;line-height:1.3;display:-webkit-box;overflow:hidden}.assignment-tile-note{color:var(--text-secondary);-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;font-size:12px;line-height:16px;display:-webkit-box;overflow:hidden}.assignment-tile-items{border-top:1px solid var(--border-light);flex-direction:column;gap:.15rem;padding-top:.5rem;display:flex}.assignment-tile-items .assigned-item{flex-direction:column;align-items:flex-start;gap:.2rem;padding:5px 6px}.assignment-tile-actions{justify-content:flex-end;align-items:center;margin-top:auto;padding-top:.25rem;display:flex}.assignment-tile:hover{box-shadow:var(--shadow-card);border-color:var(--color-border);transform:none}.task-row{transition:background var(--transition-fast);border-radius:8px}.task-row:hover,.task-row:focus-visible{background:var(--color-primary-tint)}.task-row:focus-visible{outline:2px solid var(--color-primary);outline-offset:1px}.classroom-unit{scroll-margin-top:1rem}.nav-bar{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.nav-link{font-family:var(--font-brand);color:var(--color-text-secondary);border-radius:var(--radius-xl);transition:background-color var(--transition-fast), color var(--transition-fast);align-items:center;gap:.4rem;padding:6px 18px;font-size:14px;font-weight:500;line-height:20px;text-decoration:none;display:inline-flex}.nav-link:hover{color:var(--color-text-primary)}.nav-link.is-active{background:var(--color-primary);color:#fff}.nav-utility{font-family:var(--font-brand);color:var(--color-text-secondary);font-size:14px;font-weight:400;text-decoration:none}.nav-utility:hover{color:var(--color-text-primary)}.pill-tab{font-family:var(--font-brand);border-radius:var(--radius-pill);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:background-color var(--transition-fast), color var(--transition-fast);padding:6px 18px;font-size:13px;font-weight:500;line-height:18px}.pill-tab:hover{background:var(--color-bg)}.pill-tab.is-active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.vtab{font-family:var(--font-brand);letter-spacing:1.2px;text-transform:uppercase;writing-mode:vertical-rl;color:var(--color-text-secondary);cursor:pointer;min-width:44px;transition:color var(--transition-fast), border-color var(--transition-fast);background:0 0;border:none;border-left:3px solid #0000;padding:14px 8px;font-size:12px;font-weight:600;transform:rotate(180deg)}.vtab:hover{color:var(--color-text-primary)}.vtab.is-active{border-left-color:var(--color-secondary);color:var(--color-text-primary)}.data-table{border-collapse:collapse;width:100%}.data-table thead th{background:var(--color-bg);font-family:var(--font-brand);letter-spacing:.3px;text-transform:uppercase;color:var(--color-text-secondary);text-align:left;border-bottom:2px solid var(--color-border);padding:10px 14px;font-size:12px;font-weight:600;line-height:16px}.data-table tbody td{background:var(--color-surface);font-family:var(--font-ui);color:var(--color-text-primary);border-bottom:1px solid #f3f4f6;padding:12px 14px;font-size:14px;line-height:20px}.data-table tbody tr:hover td{background:#f9fafb}.data-table td.col-name{font-family:var(--font-brand);font-weight:600}.data-table .row-chevron{color:var(--color-text-muted);min-width:44px;min-height:44px}.btn-link{font:inherit;color:var(--color-primary);cursor:pointer;background:0 0;border:none;padding:0;text-decoration:underline}.btn-link:hover{color:var(--color-primary-hover)}.btn-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:4px}.class-checklist{background:var(--bg-main);border:1px solid var(--border-light);border-radius:10px;flex-direction:column;gap:8px;max-height:220px;padding:12px;display:flex;overflow-y:auto}.pr-scroll{max-height:70vh;padding:0;overflow:auto}.pr-table{border-collapse:separate;border-spacing:0;width:max-content;min-width:100%;font-family:var(--font-ui)}.pr-name{z-index:2;background:var(--color-surface);text-align:left;border-right:1px solid var(--color-border-strong);border-bottom:1px solid var(--color-border);width:152px;min-width:152px;max-width:152px;padding:8px 10px;font-weight:400;position:sticky;left:0}.pr-studentname{max-width:100%;color:var(--color-primary);font-family:var(--font-ui);text-align:left;cursor:pointer;white-space:nowrap;text-overflow:ellipsis;background:0 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