body:has(.login-page),html:has(.login-page){overflow:auto;height:auto;background:#f5f6fa}.login-page{--bg:#f5f6fa;--surface:#fff;--surface2:#f1f3f8;--border:#e2e6f0;--border2:#cdd2e0;--text:#0d1333;--text2:#3a3f55;--text3:#8b91a8;--accent:#3b6fe8;--accent-dim:#ebf0fd;--green:#059669;--green-dim:#d1fae5;--purple:#7c3aed;--purple-dim:#ede9fe;--orange:#d97706;--teal:#00c9a7;--teal-dark:#009e85;--dark:#0d1333;--sans:"DM Sans",sans-serif;--mono:"IBM Plex Mono",monospace;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}.login-page *,.login-page :after,.login-page :before{box-sizing:border-box}:where(.login-page) a{text-decoration:none;color:inherit}.login-page .grid-bg,.login-page.grid-bg{background-color:var(--bg);background-image:linear-gradient(rgba(59,111,232,.06) 1px,transparent 0),linear-gradient(90deg,rgba(59,111,232,.06) 1px,transparent 0);background-size:48px 48px}.login-page .lnav{display:flex;justify-content:space-between;align-items:center;padding:0 48px;height:68px;border-bottom:1px solid var(--border);background:rgba(245,246,250,.95);position:relative;z-index:10}.login-page .logo{font-size:22px;font-weight:700;letter-spacing:-.5px;color:var(--text)}.login-page .logo em{font-style:normal;color:var(--accent)}.login-page .nav-back{font-size:13px;color:var(--text3);display:flex;align-items:center;gap:6px}.login-page .nav-back:hover{color:var(--text)}.login-center{flex:1;padding:48px 24px;position:relative}.login-center,.login-page .sq{display:flex;align-items:center;justify-content:center}.login-page .sq{position:absolute;font-weight:700;color:#fff;font-size:14px;z-index:0;pointer-events:none}.login-page .sq-teal{background:var(--teal)}.login-page .sq-navy{background:#1b2a6b}.login-page .sq-cyan{background:#00b4d8}.login-page .sq-purple{background:#b794f4;opacity:.6}.login-page .sq-sm{width:24px;height:24px}.login-page .sq-md{width:44px;height:44px;font-size:15px}.auth-panels{display:flex;gap:20px;align-items:flex-start;width:100%;max-width:860px;position:relative;z-index:1}.role-panel{width:220px;flex-shrink:0;display:flex;flex-direction:column;gap:10px;padding-top:8px}.role-panel-label{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--text3);margin-bottom:6px;padding-left:2px}.role-btn{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px 18px;cursor:pointer;text-align:left;transition:border-color .15s;font-family:var(--sans);width:100%}.role-btn.active{border:1.5px solid var(--accent);background:var(--accent-dim)}.role-btn-label{font-size:13px;font-weight:600;color:var(--text);margin-bottom:3px}.role-btn.active .role-btn-label{color:var(--accent)}.role-btn-sub{font-size:12px;color:var(--text3);line-height:1.4}.role-btn-ico{font-size:18px;margin-bottom:8px}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:40px;width:100%;max-width:420px;flex-shrink:0}.role-pill{display:inline-block;font-family:var(--mono);font-size:11px;background:var(--accent-dim);color:var(--accent);padding:4px 12px;border-radius:99px;margin-bottom:18px}.role-pill.instructor{background:#ede9fe;color:#7c3aed}.card-title{font-size:26px;font-weight:700;color:var(--text);margin-bottom:6px;letter-spacing:-.5px}.card-sub{font-size:14px;color:var(--text3);margin-bottom:24px;font-weight:300}.login-tab-bar{background:var(--surface2);border-radius:8px;padding:3px;display:flex;margin-bottom:28px}.login-tab{flex:1;padding:9px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;border:none;background:transparent;color:var(--text3);font-family:var(--sans)}.login-tab.active{background:var(--surface);color:var(--text);font-weight:600;border:1px solid var(--border)}.login-field{margin-bottom:16px}.login-label{font-size:13px;font-weight:500;color:var(--text2);margin-bottom:6px;display:block}.login-label-hint{font-weight:400;color:var(--text3);font-size:12px}.login-input{width:100%;border:1px solid var(--border2);border-radius:8px;padding:10px 12px;font-size:14px;font-family:var(--sans);color:var(--text);background:var(--surface);outline:none}.login-input:focus{border-color:var(--accent)}.login-input-mono{font-family:var(--mono)}.name-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.login-submit{width:100%;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px;font-size:14px;font-weight:600;cursor:pointer;font-family:var(--sans);margin-top:4px;letter-spacing:.01em}.login-role-switch{font-size:13px;color:var(--text3);text-align:center;margin-top:22px;padding-top:20px;border-top:1px solid var(--border)}.login-role-switch a{color:var(--accent);font-weight:500;text-decoration:none}.login-footer{padding:20px;text-align:center;font-size:12px;color:var(--text3);border-top:1px solid var(--border)}