:root{--navy:#283e4a;--green:#88c057;--white:#fff;--bg:#f5f5f3;--text:#1a1a18;--cred-bg:#f0f4ee;--muted:#1a1a1894;--line:#283e4a24;--line-strong:#283e4a47;--navy-soft:#283e4a0f;--green-soft:#88c05724;--radius:10px;--header-h:60px;--sidebar-w:260px;--tabbar-h:64px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.5}a{color:var(--navy)}h1,h2,h3{margin:0;line-height:1.25}button,input,select,textarea{font:inherit;color:inherit}code{background:var(--navy-soft);border-radius:4px;padding:1px 5px}.logo{letter-spacing:-.01em;font-size:1.3rem;font-weight:800}.logo-green{color:var(--green)}.logo-white{color:var(--white)}.topbar{height:var(--header-h);background:var(--navy);color:var(--white);z-index:30;justify-content:space-between;align-items:center;padding:0 20px;display:flex;position:fixed;inset:0 0 auto}.topbar-right{align-items:center;gap:14px;min-width:0;display:flex}.user-name{white-space:nowrap;text-overflow:ellipsis;align-items:center;gap:8px;max-width:40vw;font-size:.92rem;display:flex;overflow:hidden}.admin-pill{background:var(--green);color:var(--navy);text-transform:uppercase;letter-spacing:.04em;border-radius:999px;padding:2px 8px;font-size:.7rem;font-weight:700}.btn-logout{color:var(--white);cursor:pointer;background:0 0;border:1px solid #ffffff73;border-radius:8px;padding:6px 14px;font-size:.88rem}.btn-logout:hover{border-color:var(--green);color:var(--green)}.save-indicator{top:calc(var(--header-h) + 10px);z-index:25;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.82rem;font-weight:600;position:fixed;right:16px;box-shadow:0 2px 8px #283e4a14}.save-indicator.saved{color:var(--green)}.save-indicator.saving{color:var(--muted)}.save-indicator.error{color:var(--white);background:var(--navy)}.sidebar{top:var(--header-h);width:var(--sidebar-w);background:var(--navy);color:var(--white);border-top:1px solid #ffffff14;padding:24px 14px;position:fixed;bottom:0;left:0;overflow-y:auto}.sidebar-brand{border-bottom:1px solid #ffffff1f;margin-bottom:16px;padding:0 10px 22px}.sidebar-title{font-size:1rem;font-weight:700}.sidebar-sub{opacity:.7;margin-top:4px;font-size:.78rem}.side-link{color:var(--white);border-left:3px solid #0000;border-radius:8px;align-items:center;gap:12px;margin-bottom:4px;padding:11px 12px;font-weight:500;text-decoration:none;display:flex}.side-link:hover{background:#ffffff12}.side-link.active{border-left-color:var(--green);color:var(--green);background:#88c05729}.nav-icon{text-align:center;width:1.4em;font-size:1.1rem}.content{margin-left:var(--sidebar-w);padding:calc(var(--header-h) + 36px) 40px 60px;min-height:100vh}.tabbar{display:none}@media (width<=899px){.sidebar{display:none}.content{padding:calc(var(--header-h) + 44px) 16px calc(var(--tabbar-h) + 32px);margin-left:0}.tabbar{height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--navy);z-index:30;display:flex;position:fixed;inset:auto 0 0}.tab-link{color:#ffffffbf;border-top:3px solid #0000;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:.75rem;text-decoration:none;display:flex}.tab-link.active{color:var(--green);border-top-color:var(--green)}.topbar{padding:0 16px}.logo{font-size:1.15rem}.user-name{max-width:38vw}.save-indicator{right:12px;top:calc(var(--header-h) + 8px)}}.page{max-width:860px;margin:0 auto}.page-wide{max-width:1100px}.page-head{margin-bottom:26px}.page-head h1{color:var(--navy);font-size:1.65rem}.page-sub{color:var(--muted);margin:6px 0 0}.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:22px;padding:28px}.card-title{color:var(--navy);margin-bottom:14px;font-size:1.1rem}.grid-2{grid-template-columns:1fr 1fr;gap:0 20px;display:grid}@media (width<=640px){.grid-2{grid-template-columns:1fr}.card{padding:20px 16px}}.field{margin-bottom:20px}.field-head{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:6px;display:flex}.field label,.field-head label{color:var(--navy);font-size:.92rem;font-weight:600}.field-help{color:var(--muted);margin:-2px 0 8px;font-size:.84rem}.counter{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.8rem}input[type=text],input[type=email],input[type=password],input[type=url],input[type=search],input:not([type]),select,textarea{background:var(--white);border:1px solid var(--line-strong);border-radius:8px;outline:none;width:100%;padding:10px 12px;transition:border-color .15s,box-shadow .15s}textarea{resize:vertical;min-height:70px}input:focus,select:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}input[readonly],textarea[readonly],select:disabled{background:var(--bg);border-color:var(--line);color:var(--text);opacity:1}input[readonly]:focus,textarea[readonly]:focus{box-shadow:none;border-color:var(--line-strong)}.url-input{gap:8px;display:flex}.url-input input{flex:1;min-width:0}.url-open{border:1px solid var(--green);background:var(--green-soft);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:44px;font-size:1.05rem;text-decoration:none;display:inline-flex}.url-open.disabled{border-color:var(--line);background:var(--bg);opacity:.45}.social-rows{gap:10px;display:grid}.social-row{grid-template-columns:150px 1fr;align-items:start;gap:10px;display:grid}.social-row .field{margin-bottom:0}@media (width<=640px){.social-row{border-bottom:1px solid var(--line);grid-template-columns:1fr;gap:6px;padding-bottom:10px}}.btn-primary,.btn-secondary{cursor:pointer;border:1px solid var(--navy);border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-size:.95rem;font-weight:600;text-decoration:none;transition:background .15s,color .15s;display:inline-flex}.btn-primary{background:var(--navy);color:var(--white)}.btn-primary:hover{background:var(--green);border-color:var(--green);color:var(--navy)}.btn-secondary{background:var(--white);color:var(--navy)}.btn-secondary:hover{border-color:var(--green)}.btn-primary:disabled,.btn-secondary:disabled{opacity:.55;cursor:default}.btn-block{width:100%}.btn-mini{background:var(--white);border:1px solid var(--line-strong);cursor:pointer;white-space:nowrap;color:var(--navy);border-radius:6px;padding:0 10px;font-size:.8rem}.btn-mini:hover{border-color:var(--green)}.btn-text{color:var(--muted);cursor:pointer;background:0 0;border:none;font-size:.85rem;text-decoration:underline}.btn-text:hover{color:var(--text)}.btn-add{background:var(--white);border:1.5px dashed var(--green);width:100%;color:var(--navy);cursor:pointer;border-radius:8px;padding:11px;font-weight:600}.btn-add:hover{background:var(--green-soft)}.tool-link{color:var(--green);font-size:.9rem;font-weight:600;text-decoration:none}.tool-link:hover{text-decoration:underline}.form-actions{flex-wrap:wrap;align-items:center;gap:12px;margin-top:6px;display:flex}.inline-msg{font-size:.88rem;font-weight:600}.inline-msg.ok{color:var(--green)}.inline-msg.error{color:var(--text);background:var(--navy-soft);border-left:3px solid var(--navy);border-radius:4px;padding:6px 10px}.note-banner{background:var(--green);color:var(--navy);border-radius:var(--radius);align-items:flex-start;gap:10px;max-width:1100px;margin:0 auto 26px;padding:14px 18px;font-weight:600;display:flex}.note-banner.preview{margin:14px 0 4px}.tools-grid{grid-template-columns:1fr 1fr;gap:22px;display:grid}.tool-cell{flex-direction:column;gap:16px;display:flex}.tool-card{background:var(--white);border:2px solid var(--green);border-radius:var(--radius);flex-direction:column;align-items:flex-start;gap:10px;height:100%;padding:26px;display:flex}.tool-cell.wide .tool-card{height:auto}.tool-icon{font-size:2rem}.tool-card h2{color:var(--navy);font-size:1.15rem}.tool-card p{color:var(--muted);flex:1;margin:0 0 8px}@media (width<=760px){.tools-grid{grid-template-columns:1fr}}.credentials-box{background:var(--cred-bg);border:2px dashed var(--green);border-radius:var(--radius);padding:22px}.credentials-title{color:var(--navy);margin-bottom:14px;font-weight:700}.credentials-grid{gap:12px;display:grid}.cred-field label{color:var(--navy);margin-bottom:4px;font-size:.82rem;font-weight:600;display:block}.cred-input{gap:6px;display:flex}.cred-input input{flex:1;min-width:0}.credentials-box input[readonly]{background:var(--white)}.credentials-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;display:flex}.credentials-note{color:var(--muted);margin:14px 0 0;font-size:.78rem}.accordion-list{gap:14px;display:grid}.accordion{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.accordion-header{background:var(--navy);width:100%;color:var(--white);cursor:pointer;text-align:left;border:none;align-items:center;gap:12px;padding:16px 20px;display:flex}.lesson-badge{background:var(--white);color:var(--navy);border-radius:6px;flex-shrink:0;padding:3px 9px;font-size:.8rem;font-weight:800}.accordion-title{flex:1;font-size:1rem;font-weight:600}.done-badge{background:var(--green);color:var(--navy);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:.8rem;font-weight:800;display:inline-flex}.chevron{font-size:1.1rem;transition:transform .2s}.accordion.open .chevron{transform:rotate(180deg)}.accordion-body{padding:24px 24px 8px}.header-link{margin:-6px 0 20px}.inline-link{margin:-12px 0 20px}.subsection{color:var(--navy);background:var(--navy-soft);border-radius:6px;margin:10px 0 18px;padding:8px 12px;font-size:1rem}@media (width<=640px){.accordion-header{padding:14px}.accordion-body{padding:18px 14px 4px}}.repeater{margin-bottom:22px}.repeater-title{color:var(--navy);margin-bottom:8px;font-size:.92rem;font-weight:600}.repeater-item{border:1px solid var(--line);border-left:3px solid var(--green);background:var(--bg);border-radius:8px;margin-bottom:12px;padding:14px 16px 2px}.repeater-item .field input,.repeater-item .field textarea{background:var(--white)}.repeater-item-head{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.repeater-item-label{color:var(--navy);font-size:.9rem;font-weight:700}.empty-hint{color:var(--muted);margin:0 0 10px;font-size:.88rem}.auth-page{background:linear-gradient(var(--navy) 0 300px, var(--bg) 300px);flex-direction:column;justify-content:flex-start;align-items:center;min-height:100vh;padding:0 16px 40px;display:flex}.auth-brand{color:var(--white);text-align:center;max-width:520px;padding:44px 0 28px}.auth-brand .logo{margin-bottom:16px;font-size:1.5rem}.auth-brand h1{font-size:1.5rem}.auth-brand p{opacity:.78;margin:8px 0 0;font-size:.92rem}.auth-card{background:var(--white);border-radius:14px;width:100%;max-width:460px;padding:30px;box-shadow:0 10px 30px #283e4a29}.auth-card h2{color:var(--navy);margin-bottom:20px;font-size:1.3rem}.auth-card .inline-msg{margin:0 0 14px}.auth-switch{text-align:center;margin:18px 0 0;font-size:.92rem}.auth-switch a{color:var(--green);font-weight:700}.auth-hint{text-align:center;color:var(--muted);margin:8px 0 0;font-size:.82rem}@media (width<=640px){.auth-card{padding:22px 18px}}.search{max-width:420px;margin-bottom:18px}.table-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow-x:auto}.students-table{border-collapse:collapse;width:100%}.students-table th{text-align:left;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap;padding:12px 14px;font-size:.78rem}.students-table td{border-bottom:1px solid var(--line);vertical-align:middle;padding:12px 14px}.students-table tbody tr:not(.empty-row){cursor:pointer}.students-table tbody tr:not(.empty-row):hover,.students-table tbody tr:focus-visible{background:var(--green-soft);outline:none}.students-table tr:last-child td{border-bottom:none}.empty-row td{text-align:center;color:var(--muted);padding:30px}.cell-name{font-weight:600}.cell-email-mobile{color:var(--muted);font-size:.8rem;display:none}.col-date{white-space:nowrap}.avatar{background:var(--navy);color:var(--white);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-weight:700;display:inline-flex}.progress-dots{gap:6px;display:flex}.dot{background:var(--line);width:22px;height:22px;color:var(--muted);border-radius:50%;justify-content:center;align-items:center;font-size:.68rem;font-weight:700;display:inline-flex}.dot.done{background:var(--green);color:var(--white)}@media (width<=760px){.col-email,.col-date{display:none}.cell-email-mobile{display:block}.progress-dots{gap:3px}.dot{width:18px;height:18px;font-size:.6rem}.students-table td,.students-table th{padding:10px 8px}}.back-bar{top:var(--header-h);z-index:20;background:var(--bg);margin:-10px 0 14px;padding:10px 0;position:sticky}.btn-back{color:var(--navy);background:var(--white);border:1px solid var(--line-strong);border-radius:8px;padding:7px 14px;font-weight:600;text-decoration:none;display:inline-block}.btn-back:hover{border-color:var(--green)}.student-head{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:16px;display:flex}.student-head h1{color:var(--navy);font-size:1.45rem}.student-head>div:nth-child(2){flex:1;min-width:200px}.reset-pw{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.reset-pw input{width:230px}.readonly-note{color:var(--navy);background:var(--navy-soft);border-radius:8px;margin-bottom:18px;padding:8px 12px;font-size:.85rem}.subtabs{border-bottom:1px solid var(--line);gap:6px;margin-bottom:22px;display:flex;overflow-x:auto}.subtab{color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:3px solid #0000;padding:10px 14px;font-weight:600}.subtab.active{color:var(--navy);border-bottom-color:var(--green)}.stats{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:22px;display:grid}.stat{background:var(--white);border:1px solid var(--line);border-top:3px solid var(--green);border-radius:var(--radius);padding:20px 22px}.stat-value{color:var(--navy);font-size:1.9rem;font-weight:800}.stat-label{color:var(--muted);font-size:.9rem}.loading{color:var(--muted);justify-content:center;align-items:center;gap:10px;padding:30px 0;display:flex}.spinner{border:2px solid var(--line);border-top-color:var(--green);border-radius:50%;width:18px;height:18px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.fullscreen-center{justify-content:center;align-items:center;min-height:100vh;display:flex}.error-box{background:var(--white);border:1px solid var(--line-strong);border-left:4px solid var(--navy);border-radius:8px;padding:16px}
