.admin-view[hidden],.admin-panel[hidden]{display:none}.shell.admin-mode{display:block;min-height:100vh;background:#f4f7fb}.shell.admin-mode>.intro,.shell.admin-mode>.auth-card,.shell.admin-mode>.dashboard-view{display:none}.admin-view{min-height:100vh;color:#17304d}.admin-header{height:86px;display:grid;grid-template-columns:220px 1fr auto;align-items:center;gap:24px;padding:0 clamp(24px,4vw,64px);background:#fff;border-bottom:1px solid #dfe7ef;position:sticky;top:0;z-index:20}.admin-nav{display:flex;justify-content:center;gap:7px}.admin-nav-button{border:0;background:transparent;color:#687b90;padding:11px 14px;border-radius:10px;font:inherit;font-size:.9rem;font-weight:750;cursor:pointer}.admin-nav-button.active{background:#e8f1ff;color:#1257b0}.admin-profile{display:flex;align-items:center;gap:12px}.admin-profile span{font-size:.83rem;font-weight:750;color:#1257b0;background:#e8f1ff;padding:8px 10px;border-radius:999px}.admin-content{max-width:1280px;margin:0 auto;padding:42px 30px 72px}.admin-title-row,.admin-section-heading,.admin-card-heading,.dialog-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.admin-title-row h1{margin:0;font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.3rem,4vw,3.7rem);font-weight:500;letter-spacing:-.045em;color:#16385f}.admin-title-row>div>p:last-child{color:#6d7e91}.admin-primary{border:0;border-radius:11px;background:#1257b0;color:#fff;padding:13px 17px;font:inherit;font-weight:750;cursor:pointer}.admin-primary:hover{background:#0d488f}.admin-primary.full{width:100%;margin-top:5px}.admin-message{min-height:23px;margin:12px 0;color:#126a59;font-weight:700}.admin-message.error{color:#b53d31}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:22px 0 28px}.admin-stats article{background:#fff;border:1px solid #dfe7ef;border-radius:16px;padding:22px;display:grid;gap:12px}.admin-stats span{color:#718397;font-size:.85rem}.admin-stats strong{font-size:2rem;color:#1257b0}.admin-overview-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:20px}.admin-card{background:#fff;border:1px solid #dfe7ef;border-radius:18px;padding:24px}.admin-card h2,.admin-section-heading h2{margin:0;color:#17304d}.quick-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.quick-actions button{border:1px solid #d5e1ee;background:#f8fafc;color:#244564;border-radius:11px;padding:14px;text-align:left;font:inherit;font-size:.88rem;font-weight:700;cursor:pointer}.quick-actions button:hover{border-color:#1257b0;color:#1257b0}.admin-list-empty{color:#77899b;padding:32px 0;text-align:center}.admin-section-heading{margin:22px 0 18px}.admin-heading-actions{display:flex;gap:10px}.admin-heading-actions input{min-width:270px}.admin-table-wrap{background:#fff;border:1px solid #dfe7ef;border-radius:18px;overflow:auto}.admin-table-wrap table{width:100%;border-collapse:collapse}.admin-table-wrap th,.admin-table-wrap td{text-align:left;padding:16px 18px;border-bottom:1px solid #e7edf3;font-size:.87rem}.admin-table-wrap th{color:#74869a;background:#f8fafc;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}.admin-table-wrap td strong{display:block;color:#17304d}.admin-table-wrap td small{color:#718397}.row-action{border:0;background:#fff0ed;color:#b44330;padding:8px 10px;border-radius:8px;font-weight:700;cursor:pointer}.admin-course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.admin-course-card{background:#fff;border:1px solid #dfe7ef;border-radius:17px;padding:22px;display:flex;flex-direction:column;gap:13px}.admin-course-card h3{margin:0}.admin-course-card p{margin:0;color:#718397;font-size:.85rem}.admin-course-card .row-action{align-self:flex-start;margin-top:8px}.admin-dialog{border:0;border-radius:20px;padding:0;width:min(480px,calc(100% - 32px));box-shadow:0 30px 90px rgba(19,48,77,.25)}.admin-dialog::backdrop{background:rgba(13,35,56,.55)}.admin-dialog form{display:grid;gap:16px;padding:26px}.dialog-heading{align-items:flex-start;margin-bottom:5px}.dialog-heading button{border:0;background:#eef3f7;border-radius:9px;width:38px;height:38px;font-size:1.4rem;cursor:pointer}.admin-dialog select{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font:inherit;padding:13px 14px}.assignment-progress{display:flex;align-items:center;gap:8px}.assignment-progress span{width:70px;height:7px;background:#e5edf4;border-radius:999px;overflow:hidden}.assignment-progress i{display:block;height:100%;background:#1257b0}.assignment-progress em{font-style:normal;color:#66798d;font-size:.78rem}@media(max-width:900px){.admin-header{height:auto;grid-template-columns:1fr auto;padding:15px 20px}.admin-nav{grid-column:1/-1;grid-row:2;justify-content:flex-start;overflow:auto}.admin-profile span{display:none}.admin-content{padding:30px 20px 60px}.admin-stats{grid-template-columns:1fr 1fr}.admin-overview-grid{grid-template-columns:1fr}.admin-course-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.admin-title-row{align-items:flex-start;flex-direction:column}.admin-section-heading{align-items:flex-start;flex-direction:column}.admin-heading-actions{width:100%}.admin-heading-actions input{min-width:0;flex:1}.admin-stats,.admin-course-grid{grid-template-columns:1fr}.quick-actions{grid-template-columns:1fr}.admin-title-row h1{font-size:2.35rem}}