@import url("https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap");:root{--primary:#0a6e58;--primary-light:#0c8a70;--primary-dark:#065a47;--primary-subtle:#ecfdf5;--primary-border:#a7f3d0;--gold:#c49a2a;--gold-light:#fef3c7;--bg:#f5f7f6;--surface:#ffffff;--surface-raised:#fafbfa;--text:#111827;--text-secondary:#4b5563;--text-muted:#9ca3af;--border:#e5e7eb;--border-strong:#d1d5db;--shadow-xs:0 1px 2px rgba(0,0,0,0.06);--shadow-sm:0 1px 4px rgba(0,0,0,0.07),0 2px 8px rgba(0,0,0,0.05);--shadow:0 4px 16px rgba(0,0,0,0.08),0 1px 4px rgba(0,0,0,0.04);--shadow-lg:0 12px 40px rgba(0,0,0,0.1),0 4px 12px rgba(0,0,0,0.06);--shadow-primary:0 4px 16px rgba(10,110,88,0.28);--radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:24px}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Cairo,Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}body:before{content:"";position:fixed;inset:0;background:radial-gradient(ellipse 90% 50% at 50% -10%,rgba(10,110,88,.07) 0,transparent 60%),radial-gradient(ellipse 60% 40% at 90% 110%,rgba(196,154,42,.05) 0,transparent 55%);pointer-events:none;z-index:0}button,input,select,textarea{font-family:inherit}button{border:none;cursor:pointer;transition:all .18s ease;display:inline-flex;align-items:center;justify-content:center;gap:6px}button:disabled{cursor:not-allowed;opacity:.5}.shell{position:relative;z-index:1;width:min(1240px,calc(100% - 40px));margin:0 auto;padding:40px 0 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var(--border);border-radius:var(--radius);padding:14px 22px;box-shadow:var(--shadow-sm)}.home-url-card .url-label{font-size:.8rem;color:var(--text-muted);font-weight:600;border-left:1px solid var(--border);padding-left:14px}.home-url-card code{font-family:Cairo,monospace;font-size:1rem;font-weight:700;color:var(--primary);direction:ltr;unicode-bidi:embed}.home-url-card code span{color:var(--gold)}.hero{padding:52px 0 44px;position:relative}.hero.single{padding:44px 0 36px}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--primary-subtle);color:var(--primary);font-size:.8rem;font-weight:700;letter-spacing:.06em;padding:6px 14px;border-radius:100px;border:1px solid var(--primary-border);margin-bottom:20px}.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);flex-shrink:0}h1{font-size:clamp(2rem,4vw,3.4rem);font-weight:900;line-height:1.18;color:var(--text);max-width:680px}.intro{color:var(--text-secondary);font-size:1rem;line-height:1.85;margin-top:16px;max-width:560px}.intro strong{color:var(--primary);font-weight:700}.notice{background:var(--surface);border:1px solid var(--border);border-right:4px solid var(--primary);border-radius:var(--radius);padding:14px 18px;margin-bottom:20px;color:var(--text);font-size:.93rem;font-weight:500;box-shadow:var(--shadow-xs);animation:noticeSlide .25s ease}.notice-loading{border-right-color:var(--gold);color:var(--text-secondary)}.notice-error{border-right-color:#dc2626}.notice-success{position:fixed;top:28px;left:50%;right:auto;transform:translateX(-50%);background:linear-gradient(135deg,#10b981,#059669 55%,#047857);color:#fff;border:none;border-radius:18px;padding:18px 28px;margin:0;display:flex;align-items:center;gap:12px;font-size:1rem;font-weight:700;box-shadow:0 8px 32px rgba(5,150,105,.45),0 2px 8px rgba(0,0,0,.1),inset 0 1px 0 rgba(255,255,255,.2);z-index:9999;min-width:300px;max-width:90vw;animation:toastPop .4s cubic-bezier(.34,1.56,.64,1) forwards;white-space:nowrap}.notice-icon{width:28px;height:28px;flex-shrink:0}@keyframes noticeSlide{0%{transform:translateY(-6px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes toastPop{0%{transform:translateX(-50%) translateY(-16px) scale(.94);opacity:0}to{transform:translateX(-50%) translateY(0) scale(1);opacity:1}}.workspace{display:grid;grid-gap:24px;gap:24px;grid-template-columns:290px 1fr;align-items:start}.teacher-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;position:-webkit-sticky;position:sticky;top:24px}.teacher-panel-header{background:linear-gradient(145deg,var(--primary-dark) 0,var(--primary) 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22px;font-size:.9rem;font-weight:700;min-height:44px;box-shadow:var(--shadow-primary)}.btn-primary:hover:not(:disabled){background:var(--primary-light);transform:translateY(-1px);box-shadow:0 6px 20px rgba(10,110,88,.38)}.btn-primary:active:not(:disabled){transform:translateY(0)}.ghost,.secondary{background:transparent;border:1.5px solid var(--primary);color:var(--primary);border-radius:var(--radius-sm);padding:10px 22px;font-size:.9rem;font-weight:600;min-height:44px}.ghost:hover:not(:disabled),.secondary:hover:not(:disabled){background:var(--primary-subtle);transform:translateY(-1px);box-shadow:var(--shadow-xs)}.circle-grid{display:flex;gap:10px;overflow-x:auto;padding:20px 2px 10px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.circle-grid::-webkit-scrollbar{height:3px}.circle-grid::-webkit-scrollbar-track{background:transparent}.circle-grid::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px}.circle-card{flex-shrink:0;scroll-snap-align:start;position:relative;display:flex;flex-direction:column;justify-content:center;gap:4px;min-width:148px;max-width:180px;background:var(--surface-raised);border:2px solid var(--border);border-radius:var(--radius);padding:14px 16px;cursor:pointer;transition:border-color .18s ease,background .18s ease,box-shadow .18s ease,transform .18s ease}.circle-card 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small{color:rgba(255,255,255,.65)!important}.loading-students{display:flex;flex-direction:column;align-items:center;gap:16px;padding:48px 20px;margin-top:20px;border-top:1px solid var(--border)}.loading-students p{color:var(--text-muted);font-size:.9rem;font-weight:600}.loading-dots{display:flex;gap:8px}.loading-dots span{width:10px;height:10px;border-radius:50%;background:var(--primary);animation:dotBounce 1.2s ease-in-out infinite}.loading-dots span:nth-child(2){animation-delay:.2s;opacity:.7}.loading-dots span:nth-child(3){animation-delay:.4s;opacity:.45}@keyframes dotBounce{0%,80%,to{transform:translateY(0)}40%{transform:translateY(-10px)}}.students-section{margin-top:28px;padding-top:28px;border-top:1px solid var(--border)}.students-toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.students-toolbar 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.status:nth-child(2).active{background:#dc2626;color:#fff;border-color:#dc2626;box-shadow:0 2px 8px rgba(220,38,38,.35)}.status-options .status:nth-child(2):not(.active):hover{background:#fee2e2;border-color:#fca5a5}.status-options .status:nth-child(3){background:#fffbeb;color:#d97706;border-color:#fde68a}.status-options .status:nth-child(3).active{background:#d97706;color:#fff;border-color:#d97706;box-shadow:0 2px 8px rgba(217,119,6,.35)}.status-options .status:nth-child(3):not(.active):hover{background:#fef3c7;border-color:#fcd34d}.status-options .status:nth-child(4){background:#eff6ff;color:#2563eb;border-color:#bfdbfe}.status-options .status:nth-child(4).active{background:#2563eb;color:#fff;border-color:#2563eb;box-shadow:0 2px 8px rgba(37,99,235,.35)}.status-options .status:nth-child(4):not(.active):hover{background:#dbeafe;border-color:#93c5fd}.empty-state{background:var(--surface-raised);border:1.5px dashed var(--border-strong);border-radius:var(--radius);padding:44px 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.status{width:100%}.save-bar{flex-direction:column;align-items:stretch;text-align:center}}.admin-center{display:flex;justify-content:center;align-items:center;min-height:70vh}.admin-login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:44px 40px;width:min(420px,100%);text-align:center}.admin-login-header{margin-bottom:32px}.admin-lock-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;background:var(--primary-subtle);color:var(--primary);margin-bottom:18px}.admin-lock-icon svg{width:26px;height:26px}.admin-login-header h1{font-size:1.6rem;font-weight:900;color:var(--text);max-width:none;margin-bottom:6px}.admin-login-header p{color:var(--text-muted);font-size:.9rem}.admin-login-form{display:flex;flex-direction:column;gap:14px}.admin-password-input{width:100%;background:var(--surface-raised);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;font-size:1rem;color:var(--text);text-align:center;letter-spacing:.12em;transition:border-color .18s ease,box-shadow .18s ease;min-height:48px}.admin-password-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(10,110,88,.12)}.admin-login-error{color:#dc2626;font-size:.87rem;font-weight:600}.admin-login-btn{width:100%;min-height:48px;font-size:1rem}.btn-spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(1turn)}}.admin-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.admin-logout-btn{margin-right:auto}.admin-table-wrapper{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden}.admin-table{width:100%;border-collapse:collapse;font-size:.9rem}.admin-table thead{background:var(--primary-subtle)}.admin-table th{padding:14px 18px;text-align:right;font-size:.78rem;font-weight:700;color:var(--primary-dark);letter-spacing:.04em;border-bottom:1px solid var(--primary-border);white-space:nowrap}.admin-table td{padding:14px 18px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle}.admin-table tbody tr:last-child td{border-bottom:none}.admin-table tbody tr:hover td{background:var(--surface-raised)}.admin-td-num{color:var(--text-muted);font-size:.82rem;font-weight:600;width:40px}.admin-td-name{font-weight:700}.admin-td-mono{font-family:monospace;font-size:.88rem;color:var(--text-secondary)}.admin-suburl{display:inline-block;background:var(--primary-subtle);color:var(--primary-dark);border:1px solid var(--primary-border);border-radius:6px;padding:3px 10px;font-size:.82rem;font-family:monospace;font-weight:600;direction:ltr}@media (max-width:640px){.admin-login-card{padding:32px 20px}.admin-table td:nth-child(3),.admin-table th:nth-child(3){display:none}}