.admin-shell{--admin-sidebar:#071824;--admin-sidebar-2:#0b3338;--admin-accent:#0f766e;--admin-success:#16a34a;--admin-warning:#f97316;--admin-danger:#dc2626;--admin-purple:#1399a2;--admin-header:linear-gradient(90deg,#071824,#0b4b4a 55%,#0f766e);background:radial-gradient(circle at 100% 0,rgba(249,115,22,.07),transparent 25rem),#f4fbfa}.admin-sidebar{width:272px;background:linear-gradient(180deg,#071824,#0b3338 52%,#071824);border-right:1px solid rgba(255,255,255,.06)}.admin-sidebar .brand-logo{width:44px;height:44px;-o-object-fit:contain;object-fit:contain;background:rgba(255,255,255,.08);border-radius:10px;padding:4px}.admin-nav-group-title{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:rgba(148,163,184,.9);padding:.35rem .85rem;margin-top:.35rem}.admin-nav-link{display:flex;align-items:center;gap:.55rem;padding:.45rem .85rem;margin:0 .4rem;border-radius:.55rem;color:rgba(226,232,240,.78);text-decoration:none;font-size:.875rem;font-weight:600;transition:background .15s,color .15s}.admin-nav-link:hover{background:rgba(20,184,166,.18);color:#fff}.admin-nav-link.active{background:linear-gradient(90deg,#0f766e,#1399a2);color:#fff;box-shadow:0 6px 18px rgba(15,118,110,.38);border-left:3px solid #fb923c}.admin-nav-link.nested{padding-left:1.85rem;font-size:.8125rem;font-weight:500;color:rgba(203,213,225,.75)}.admin-header-bar{background:var(--admin-header);color:#fff}.admin-stat-card{border:1px solid rgba(15,118,110,.1);border-radius:1rem;overflow:hidden;box-shadow:0 10px 28px rgba(15,118,110,.08);transition:transform .15s,box-shadow .15s;text-decoration:none;display:block;color:inherit}.admin-stat-card:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(15,118,110,.16)}.admin-stat-card .stat-top{height:6px}.admin-stat-card .stat-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.35rem}.admin-module-tile{border:1px solid rgba(15,118,110,.1);border-radius:1rem;background:#fff;box-shadow:0 8px 24px rgba(15,118,110,.07);padding:1.1rem;text-decoration:none;color:inherit;display:flex;align-items:center;gap:.85rem;transition:transform .15s,box-shadow .15s;height:100%}.admin-module-tile:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(15,118,110,.15);color:inherit}.admin-module-tile .tile-icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.25rem;color:#fff;flex-shrink:0}.admin-table img.student-thumb{width:40px;height:48px;-o-object-fit:cover;object-fit:cover;border-radius:6px;border:1px solid #e2e8f0}.btn-admin-success{background:#16a34a;border-color:#16a34a;color:#fff}.btn-admin-success:hover{background:#15803d;border-color:#15803d;color:#fff}.btn-admin-orange{background:#f97316;border-color:#f97316;color:#fff;font-weight:600}.btn-admin-orange:hover{background:#ea580c;border-color:#ea580c;color:#fff}.btn-admin-purple{background:#1399a2;border-color:#1399a2;color:#fff}.btn-admin-purple:hover{background:#0f766e;border-color:#0f766e;color:#fff}.admin-coming-card{border:1px solid rgba(15,118,110,.1);border-radius:1rem;background:#fff;box-shadow:0 10px 28px rgba(15,118,110,.07)}.admin-page-header{border:1px solid rgba(15,118,110,.12);border-left:5px solid #0f766e;border-radius:1rem;background:linear-gradient(110deg,#fff,#f0fdfa);padding:1rem 1.15rem;box-shadow:0 8px 24px rgba(15,118,110,.07)}.admin-shell main>div>h1:first-child,.admin-shell main>section>h1:first-child{color:#0f172a}.admin-shell .table-responsive{border-radius:1rem}.admin-shell .table thead th{white-space:nowrap;color:#0f172a;background:#e6f8f5;border-bottom-color:#b9dfdb}.admin-shell .form-label{color:#334155;font-weight:600}.admin-shell :focus-visible{outline:3px solid rgba(249,115,22,.5);outline-offset:2px}@media (max-width:991.98px){.admin-header-bar .btn{min-width:40px}}@media (prefers-reduced-motion:reduce){.admin-shell *,.admin-shell :after,.admin-shell :before{transition-duration:.01ms!important}}