*{box-sizing:border-box}:root{--primary:#4f46e5;--primary-dark:#4338ca;--primary-soft:#eef2ff;--success:#10b981;--danger:#ef4444;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--surface:rgba(255, 255, 255, .92);--bg:#f5f7fb;--shadow:0 20px 50px rgba(15, 23, 42, .08)}html,body{min-height:100%}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:radial-gradient(circle at 10% 10%,rgb(99 102 241 / .12),transparent 28%),radial-gradient(circle at 90% 0%,rgb(14 165 233 / .10),transparent 25%),var(--bg)}button,input{font:inherit}#authView,#adminDashboard{display:none}#authLoading{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px;background:#f8fafc;color:var(--text)}.loading-spinner{width:46px;height:46px;border:4px solid #e5e7eb;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.loading-text{font-size:14px;color:var(--muted);font-weight:600}@keyframes spin{to{transform:rotate(360deg)}}#missingSchoolAlert{display:none;max-width:760px;margin:24px auto;padding:14px 18px;border:1px solid #fecaca;border-radius:14px;background:#fef2f2;color:#991b1b;font-weight:600;box-shadow:0 8px 25px rgb(239 68 68 / .08)}.auth-container{width:min(440px, calc(100% - 32px));margin:7vh auto;background:var(--surface);border:1px solid rgb(255 255 255 / .8);border-radius:24px;box-shadow:var(--shadow);overflow:hidden;backdrop-filter:blur(18px)}.auth-brand{text-align:center;padding:30px 28px 24px}.brand-icon{width:54px;height:54px;margin:0 auto 14px;display:grid;place-items:center;border-radius:16px;background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;font-size:25px;box-shadow:0 12px 25px rgb(79 70 229 / .25)}#schoolHeaderTitle{margin:0;font-size:22px;letter-spacing:-.4px}.auth-subtitle{display:block;margin-top:6px;color:var(--muted);font-size:13px}.tab-header{display:grid;grid-template-columns:1fr 1fr;padding:5px;margin:0 22px 8px;background:#f1f5f9;border-radius:13px}.tab-btn{padding:11px 8px;border:0;border-radius:9px;background:#fff0;color:var(--muted);font-size:13px;font-weight:700;cursor:pointer;transition:.2s ease}.tab-btn.active{background:#fff;color:var(--primary);box-shadow:0 3px 10px rgb(15 23 42 / .08)}.tab-content{padding:22px 28px 30px;display:none}.tab-content.active{display:block}.form-group{margin-bottom:17px}label{display:block;margin-bottom:7px;font-size:13px;font-weight:700;color:#374151}input[type="email"],input[type="password"],input[type="text"]{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:11px;outline:none;background:#fff;color:var(--text);transition:.2s ease}input:focus{border-color:#818cf8;box-shadow:0 0 0 4px rgb(99 102 241 / .12)}button.submit-btn{width:100%;padding:13px 16px;margin-top:7px;border:0;border-radius:11px;background:linear-gradient(135deg,var(--primary),#6366f1);color:#fff;font-weight:750;cursor:pointer;box-shadow:0 8px 18px rgb(79 70 229 / .22);transition:.2s ease}button.submit-btn:hover{transform:translateY(-1px);background:linear-gradient(135deg,var(--primary-dark),#4f46e5)}button:disabled{opacity:.65;cursor:not-allowed;transform:none!important}.error-msg{min-height:18px;margin-top:10px;color:var(--danger);font-size:12px;text-align:center}#adminDashboard{width:min(1220px, calc(100% - 32px));margin:28px auto 50px}.nav-bar{position:relative;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 26px;margin-bottom:24px;border:1px solid rgb(255 255 255 / .8);border-radius:20px;color:#fff;background:linear-gradient(135deg,#4338ca,#6366f1 55%,#7c3aed);box-shadow:0 18px 40px rgb(79 70 229 / .22);overflow:hidden}.nav-bar::after{content:"";position:absolute;width:220px;height:220px;right:-80px;top:-120px;border-radius:50%;background:rgb(255 255 255 / .10)}.nav-title{position:relative;z-index:1}.nav-title h2{margin:0;font-size:23px;letter-spacing:-.5px}.nav-title small{display:block;margin-top:5px;opacity:.82;font-size:13px}.logout-btn{position:relative;z-index:2;border:1px solid rgb(255 255 255 / .28);padding:10px 16px;border-radius:10px;background:rgb(255 255 255 / .13);color:#fff;cursor:pointer;font-weight:700;backdrop-filter:blur(8px);transition:.2s}.logout-btn:hover{background:rgb(255 255 255 / .22)}.section-heading{margin:0 0 13px;font-size:14px;color:#64748b;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px}.metric-card{position:relative;min-height:128px;padding:22px;border:1px solid var(--border);border-radius:17px;background:rgb(255 255 255 / .92);box-shadow:0 8px 25px rgb(15 23 42 / .05);overflow:hidden}.metric-card::after{content:"";position:absolute;width:90px;height:90px;right:-30px;bottom:-35px;border-radius:50%;background:var(--primary-soft)}.metric-card.teachers::after{background:#ecfeff}.metric-card.books::after{background:#fffbeb}.metric-card.sync::after{background:#ecfdf5}.metric-label{color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.06em}.metric-val{margin-top:10px;color:var(--text);font-size:30px;line-height:1;font-weight:800}#syncStatus{color:var(--success)!important;font-size:15px!important;margin-top:12px}.dashboard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.card{position:relative;padding:24px;border:1px solid var(--border);border-radius:17px;background:rgb(255 255 255 / .94);box-shadow:0 8px 25px rgb(15 23 42 / .05);transition:.22s ease;overflow:hidden}.card:hover{transform:translateY(-3px);box-shadow:0 15px 35px rgb(15 23 42 / .09);border-color:#c7d2fe}.card-icon{width:42px;height:42px;display:grid;place-items:center;margin-bottom:16px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-size:20px}.card h3{margin:0 0 8px;color:var(--text);font-size:17px}.card p{margin:0;min-height:60px;color:var(--muted);font-size:13px;line-height:1.65}.card button{width:100%;margin-top:18px;padding:11px 14px;border:0;border-radius:10px;background:#f1f5f9;color:#334155;cursor:pointer;font-weight:750;transition:.2s}.card button:hover{background:var(--primary);color:#fff}@media (max-width:850px){.metrics-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}}@media (max-width:560px){#adminDashboard{width:min(100% - 20px, 1220px);margin-top:10px}.nav-bar{padding:20px;border-radius:16px}.nav-title h2{font-size:18px}.logout-btn{padding:9px 12px;font-size:12px}.metrics-grid{grid-template-columns:1fr 1fr;gap:10px}.metric-card{min-height:110px;padding:16px}.metric-val{font-size:24px}.auth-container{margin:30px auto}.tab-content{padding-left:22px;padding-right:22px}}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgb(0 0 0 / .5);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;transition:opacity 0.3s ease,display 0.3s ease;transition-behavior:allow-discrete}.modal-overlay.active,.modal-overlay[style*="display: flex"]{display:flex;align-items:center;opacity:1}@starting-style{.modal-overlay.active,.modal-overlay[style*="display: flex"]{opacity:0}}.modal-content{background-color:#fff;width:100%;max-width:480px;padding:24px;border-radius:8px;box-shadow:0 4px 15px rgb(0 0 0 / .2);box-sizing:border-box}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header h2{margin:0;font-size:1.25rem;color:#333}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#666}.form-group{margin-bottom:16px}.form-group label{display:block;font-weight:600;margin-bottom:6px;font-size:.9rem;color:#444}.form-group input,.form-group textarea{width:100%;padding:10px;border:1px solid #ccc;border-radius:4px;box-sizing:border-box;font-family:inherit;font-size:.95rem}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.btn-primary,.btn-secondary{padding:10px 18px;border:none;border-radius:4px;cursor:pointer;font-weight:600}.btn-primary{background:linear-gradient(45deg,#0e2ee0,#c85cdb);color:#fff}.btn-primary:hover{background-color:#1d4ed8}.btn-secondary{background-color:#e5e7eb;color:#374151}.btn-secondary:hover{background-color:#d1d5db}#schoolDetailsModal[style*="display: flex"]{display:flex!important;align-items:center;justify-content:center}.tag-pill{display:inline-flex;align-items:center;background-color:#f0f2f5;border:1px solid #dcdfe6;padding:6px 12px;border-radius:20px;font-size:14px;gap:8px}.tag-pill .remove-tag{background:none;border:none;cursor:pointer;font-size:14px;color:#909399;padding:0;display:flex;align-items:center}.tag-pill .remove-tag:hover{color:#f56c6c}#deleteWarningModal[style*="display: flex"]{display:flex!important;align-items:center;justify-content:center;z-index:1000}