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#C5CDD4;font-size:.875rem;font-weight:500;color:#2e2e2e;background:#fff;min-width:160px;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .6rem center;transition:border-color .2s ease,box-shadow .2s ease}.app-header__class-select-input:hover{border-color:#9ca3af}.app-header__class-select-input:focus{outline:none;border-color:#0b3c5d;box-shadow:0 0 0 3px #0b3c5d1f}.app-header__role{font-size:.875rem;color:#4b5563;margin:0}.app-header__right{display:flex;align-items:center;gap:1rem}.app-header__notifications{position:relative}.app-header__notification-btn{position:relative;background:none;border:none;font-size:1.25rem;cursor:pointer;padding:.5rem;border-radius:8px;transition:background-color .2s ease}.app-header__notification-btn:hover{background:#e8ecef}.app-header__notification-badge{position:absolute;top:0;right:0;background:#c44536;color:#fff;border-radius:9999px;width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700}.app-header__notifications-dropdown{position:absolute;top:calc(100% + .5rem);right:0;width:350px;background:#fff;border-radius:10px;box-shadow:0 8px 24px #0b3c5d1a,0 4px 8px #0b3c5d0d;z-index:1000;max-height:400px;display:flex;flex-direction:column}.app-header__notifications-header{display:flex;justify-content:space-between;align-items:center;padding:1rem;border-bottom:1px solid #DDE2E6}.app-header__notifications-header h3{margin:0;font-size:1.125rem;font-weight:600}.app-header__notifications-header button{background:none;border:none;color:#0b3c5d;font-size:.875rem;cursor:pointer;font-weight:500}.app-header__notifications-header button:hover{text-decoration:underline}.app-header__notifications-list{max-height:300px;overflow-y:auto}.app-header__notification-item{padding:1rem;border-bottom:1px solid #E8ECEF;cursor:pointer;transition:background-color .2s ease}.app-header__notification-item:hover{background:#f4f7f8}.app-header__notification-item--unread{background:#e0f2f4}.app-header__notification-message{margin:0 0 .25rem;font-size:.875rem;color:#2e2e2e}.app-header__notification-time{font-size:.75rem;color:#6b7280}.app-header__no-notifications{padding:2rem;text-align:center;color:#6b7280;font-style:italic}.app-header__profile{position:relative}.app-header__profile-btn{background:none;border:none;cursor:pointer;padding:0}.app-header__avatar{width:40px;height:40px;border-radius:9999px;background:#0b3c5d;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;transition:transform .2s ease;overflow:hidden}.app-header__avatar:hover{transform:scale(1.05)}.app-header__avatar-img{width:100%;height:100%;object-fit:cover}.app-header__profile-dropdown{position:absolute;top:calc(100% + .5rem);right:0;width:280px;background:#fff;border-radius:10px;box-shadow:0 8px 24px #0b3c5d1a,0 4px 8px #0b3c5d0d;z-index:1000;padding:1.5rem}.app-header__profile-info{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:1rem}.app-header__profile-avatar-large{width:64px;height:64px;border-radius:9999px;background:#0b3c5d;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.25rem;overflow:hidden}.app-header__profile-details{text-align:center}.app-header__profile-name{font-size:1.125rem;font-weight:600;color:#2e2e2e;margin:0 0 .25rem}.app-header__profile-email{font-size:.875rem;color:#4b5563;margin:0 0 .25rem}.app-header__profile-role{font-size:.75rem;color:#6b7280;margin:0}.app-header__profile-divider{height:1px;background:#dde2e6;margin:1rem 0}.app-header__profile-settings{width:100%;padding:1rem;background:#f4f7f8;border:1px solid #DDE2E6;border-radius:8px;color:#374151;cursor:pointer;font-size:1rem;font-weight:500;transition:all .2s ease;margin-bottom:.5rem;text-align:center}.app-header__profile-settings:hover{background:#e8ecef;border-color:#c5cdd4}.app-header__profile-logout{width:100%;padding:1rem;background:#fee2e2;border:1px solid rgba(196,69,54,.25);border-radius:8px;color:#c44536;cursor:pointer;font-size:1rem;font-weight:500;transition:all .2s ease}.app-header__profile-logout:hover{background:#fdd3d3;border-color:#c44536}.app-footer{padding:1rem 2rem;text-align:center;font-size:.85rem;color:#6b7280;border-top:1px solid #DDE2E6;margin-top:auto}