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18px;border-radius:18px;border:1.5px dashed rgba(20,184,166,.45);background:linear-gradient(180deg,#14b8a60d,#14b8a605);text-align:center;cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .15s ease}.uploadDropzone:hover{border-color:var(--ui-primary-hover);background:linear-gradient(180deg,#14b8a614,#14b8a608);transform:translateY(-1px)}.uploadDropzoneIcon{width:56px;height:56px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:#14b8a624;color:var(--ui-primary-hover)}.uploadDropzoneTitle{font-size:16px;font-weight:700;color:var(--ui-text)}.uploadDropzoneHint{color:var(--ui-muted);font-size:13px}.uploadFieldSelected{display:flex;flex-direction:column;gap:12px;padding:14px 16px;border:1.5px dashed rgba(20,184,166,.45);border-radius:18px;background:linear-gradient(180deg,#14b8a60d,#14b8a605)}.uploadFieldSelectedHeader{display:flex;align-items:center;justify-content:space-between;gap:12px}.uploadFieldSelectedInfo{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.uploadFieldSelectedName{color:var(--ui-text);word-break:break-word}.uploadFieldSelectedBadge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;background:#86efac2e;color:#166534;font-size:12px;font-weight:700}.uploadFieldActions{display:flex;gap:8px;flex-wrap:wrap}.uploadActionLabel{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 14px;border-radius:10px;background:#14b8a62e;color:var(--ui-text);font-size:14px;font-weight:600;cursor:pointer;text-decoration:none}.uploadActionLabel:hover{background:#14b8a647}.selectedSubjectCard{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:14px;border:1px solid var(--ui-border);background:var(--ui-surface-soft)}.teacherListRow{display:flex;gap:16px;align-items:flex-start}.teacherListRowBody{flex:1;min-width:0}.teacherDetailHeader{display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap;margin-bottom:12px}.teacherDetailHeaderText{flex:1;min-width:200px}.teacherAvatarImg{border-radius:50%;object-fit:cover;border:1px solid rgba(15,23,42,.1);flex-shrink:0;display:block;background:#fffc}.teacherAvatar-sm{width:52px;height:52px}.teacherAvatar-md{width:80px;height:80px}.teacherAvatar-lg{width:112px;height:112px}.teacherAvatarFallback{border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700;color:#0f766e;background:#ccfbf1;border:1px solid #99f6e4}.teacherAvatar-sm.teacherAvatarFallback{font-size:1.1rem}.teacherAvatar-md.teacherAvatarFallback{font-size:1.35rem}.teacherAvatar-lg.teacherAvatarFallback{font-size:2rem}.shellTopbar{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:10px 16px;background:var(--shell-topbar-bg);color:#e2e8f0;border-bottom:1px solid rgba(15,23,42,.5);box-shadow:0 1px #ffffff0f inset;position:relative;z-index:40}.shellTopbarLeft{display:flex;align-items:center;gap:8px;min-width:0}.shellMenuBtn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;padding:0;border-radius:10px;border:1px solid rgba(226,232,240,.2)!important;background:#0f172a73!important;color:#e2e8f0!important;cursor:pointer;box-shadow:none!important}.shellMenuBtn:hover:not(:disabled){background:#14b8a633!important;border-color:#14b8a680!important}.shellBrand{font-weight:700;text-decoration:none;letter-spacing:-.02em;color:#f8fafc;white-space:nowrap}.shellBrand:hover{color:var(--shell-accent)}.shellTopNav{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center;justify-content:flex-end;margin-left:auto}.shellTopbarActions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-left:auto}.shellTopLink,.shellIconLink{text-decoration:none;padding:6px 12px;border-radius:999px;font-size:14px;color:#cbd5e1;border:1px solid transparent}.shellTopLink:hover,.shellIconLink:hover{background:#94a3b81f;color:#f1f5f9}.shellTopLinkActive{background:var(--shell-accent-soft);color:#5eead4!important;border-color:#14b8a673}.shellIconLink{display:inline-flex;align-items:center;justify-content:center;padding:6px 10px}.shellUserName{font-size:13px;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#94a3b8}.shellThemeBtn{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(45,212,191,.35)!important;background:#14b8a61f!important;color:#ccfbf1!important;padding:6px 12px;border-radius:999px;box-shadow:none!important}.shellThemeBtn:hover:not(:disabled){background:#14b8a638!important;border-color:#2dd4bf99!important}.shellThemeLabel{font-weight:600}.shellLogoutBtn{border:1px solid rgba(226,232,240,.28)!important;background:transparent!important;color:#e2e8f0!important;padding:6px 12px;border-radius:10px;font-weight:600;cursor:pointer;box-shadow:none!important}.shellLogoutBtn:hover:not(:disabled){background:#f871711f!important;border-color:#f8717166!important;color:#fecaca!important}.shellBody{display:flex;flex:1 0 auto;width:100%;align-items:stretch;min-height:min-content}.shellContentWrapper{display:flex;flex-direction:column;flex:1;min-width:0}.shellBodyGuest .shellContentWrapper{background:var(--shell-main-bg)}.shellBodyGuest .shellMain{background:transparent}.shellSidebar{flex-shrink:0;width:240px;align-self:stretch;background:var(--shell-nav-bg);color:#e2e8f0;padding:18px 14px;border-right:1px solid rgba(15,23,42,.65);display:flex;flex-direction:column;gap:20px}.shellSidebarSection{display:flex;flex-direction:column;gap:4px}.shellSidebarLabel{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:#64748b;margin-bottom:4px}.shellSideLink{text-decoration:none;color:#cbd5e1;padding:8px 10px;border-radius:10px;font-size:14px}.shellSideLink:hover{background:#94a3b81a;color:#f8fafc}.shellSideLinkActive{background:var(--shell-accent-soft);color:#5eead4;border:1px solid rgba(20,184,166,.35)}.shellMain{flex:1 0 auto;min-width:0;background:var(--shell-main-bg);padding:24px 16px;display:flex;justify-content:center}.shellPageFrame{width:100%;display:flex;flex-direction:column;align-items:center;gap:16px}.shellFlash{width:min(100%,720px);box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;gap:12px}.shellFlashClose{flex-shrink:0}[data-theme=dark] .alertInfo{background:#1e40af33;border-color:#60a5fa59;color:#bfdbfe}[data-theme=dark] .success{background:#14532d59;border-color:#4ade8047;color:#bbf7d0}[data-theme=dark] .error{background:#7f1d1d47;border-color:#f8717159;color:#fecaca}[data-theme=dark] .emptyStateIcon,[data-theme=dark] .teacherAvatarFallback{background:#14b8a624}[data-theme=dark] .filePreviewImg,[data-theme=dark] .filePreviewImageFrame,[data-theme=dark] .avatarPreviewWrap,[data-theme=dark] .teacherAvatarImg{background:#0f172ae6;border-color:#94a3b82e}[data-theme=dark] .avatarPreviewPlaceholder{border-color:#94a3b847}[data-theme=dark] .uploadDropzone{border-color:#2dd4bf6b;background:linear-gradient(180deg,#2dd4bf17,#2dd4bf08)}[data-theme=dark] .uploadDropzone:hover{background:linear-gradient(180deg,#2dd4bf1f,#2dd4bf0d)}[data-theme=dark] .uploadFieldSelected{border-color:#2dd4bf6b;background:linear-gradient(180deg,#2dd4bf17,#2dd4bf08)}[data-theme=dark] .quickActionIcon,[data-theme=dark] .filePreviewFileBadge{background:#2dd4bf24}[data-theme=dark] .uploadFieldSelectedBadge{background:#86efac29;color:#dcfce7}[data-theme=dark] .uploadActionLabel{background:#2dd4bf2e}[data-theme=dark] .uploadActionLabel:hover{background:#2dd4bf47}@media(max-width:768px){.shellMain{padding:16px}.pageHeaderTitle{font-size:26px}.detailLayout,.profileEditorLayout{grid-template-columns:1fr}.shellThemeLabel{display:none}.subjectResourceRow{flex-direction:column}.subjectResourceActions{width:100%;justify-content:flex-start}}@media(max-width:899px){.shellUserName{display:none}.shellTopbar{gap:10px}.shellTopbarActions{gap:6px}.shellSidebar{position:fixed;top:0;left:0;bottom:0;width:min(280px,88vw);z-index:50;padding-top:72px;transform:translate(-100%);transition:transform .2s ease;box-shadow:8px 0 32px #02061773}.shellSidebar.shellSidebarOpen{transform:translate(0)}.shellSidebarBackdrop{display:block;position:fixed;inset:0;z-index:45;background:#02061773!important;border:none!important;cursor:pointer;padding:0;box-shadow:none!important;color:transparent;font-size:0;line-height:0}}@media(min-width:900px){.shellMenuBtn{display:none}.shellTopbar{flex-wrap:nowrap}.shellSidebar{position:relative;transform:none!important;transition:none;box-shadow:none;padding-top:18px;min-height:100%}}.homePage{width:100%;max-width:var(--content-max)}.homeHero{margin-bottom:32px;padding:36px 32px;background:linear-gradient(135deg,#0f2744,#14b8a6);color:#fff;border-radius:16px;box-shadow:0 10px 30px #14b8a626;border:none}.homeHero .homeDate{margin:0 0 12px;color:#5eead4!important;text-transform:uppercase;font-weight:600;letter-spacing:.05em;font-size:13px}.homeHero .homeTitle{margin:0 0 12px;font-size:32px;letter-spacing:-.02em;color:#fff}.homeHero .homeLead{margin:0;font-size:17px;line-height:1.6;max-width:58ch;color:#ffffffd9!important}.homeHero .homeUserDesc{margin-top:16px;color:#ffffffb3!important}.homeError{margin-bottom:24px}.homeLoading{padding:12px 0}.homeSection{margin-bottom:28px}.homeSectionTitle{margin:0 0 14px;font-size:18px;letter-spacing:-.02em;color:var(--ui-text)}.homeTzNote{margin:-8px 0 14px}.dashboardGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}.dashboardGridNarrow{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.statCard{background:var(--ui-surface);border:1px solid var(--ui-border-strong);border-radius:16px;padding:20px;box-shadow:0 2px 8px #0f172a0a;display:flex;align-items:center;gap:16px;transition:transform .2s ease,box-shadow .2s ease}.statCard:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0f172a14}.statCardIcon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.statCardIcon svg{font-size:24px}.statCardIcon._teal{background:#ccfbf1;color:#0f766e}.statCardIcon._indigo{background:#e0e7ff;color:#3730a3}.statCardIcon._amber{background:#fef3c7;color:#b45309}.statCardIcon._rose{background:#ffe4e6;color:#9f1239}.statCardIcon._blue{background:#dbeafe;color:#1d4ed8}.statCardDetails{flex:1;min-width:0}.statCardValue{font-size:24px;font-weight:800;letter-spacing:-.02em;color:var(--ui-text);line-height:1.2}.statCardLabel{margin-top:4px;font-size:13px;color:#64748b;font-weight:500;line-height:1.3}.statCardLink{text-decoration:none;color:inherit;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;gap:8px}.statCardLink:hover{border-color:#14b8a673;box-shadow:0 12px 32px #14b8a61f}.statCardLinkTitle{font-size:18px;display:flex;align-items:center;gap:6px}.homeTableWrap{overflow-x:auto;padding:0}.homeTable{width:100%;border-collapse:collapse;font-size:14px}.homeTable th,.homeTable td{padding:10px 12px;text-align:left;border-bottom:1px solid rgba(15,23,42,.08)}.homeTable th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#64748b;font-weight:600}.statusBadge{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border-radius:999px;font-size:12px;font-weight:600}.statusBadge.confirmed{background:#dcfce7;color:#0b1510}.statusBadge.pending{background:#fef9c3;color:#451a03}.statusBadge.cancelled{background:#fee2e2;color:#450a0a}.homeNotifList{list-style:none;margin:0;padding:0}.homeNotifItem{padding:16px;border-bottom:1px solid rgba(15,23,42,.06);display:flex;gap:12px;align-items:flex-start}.homeNotifItem:last-child{border-bottom:none}.homeNotifUnread{background:#14b8a60a}.homeNotifIcon{margin-top:2px;color:#14b8a6}.homeNotifContent{flex:1}.homeNotifTitle{font-weight:600;margin-bottom:4px;color:var(--ui-text);font-size:15px}.homeNotifMessage{color:#475569;font-size:14px;line-height:1.5;margin-bottom:6px}.homeNotifTime{display:flex;align-items:center;gap:4px;color:#94a3b8}#root{min-height:100vh}