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0;font-size:12px;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:#eee;flex:1;height:1px}.auth-divider span{padding:0 10px}.auth-btn-google{cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:4px;justify-content:center;align-items:center;gap:8px;width:100%;padding:10px;font-size:14px;transition:background .2s;display:flex}.auth-btn-google:hover:not(:disabled){background:#f5f5f5}.auth-btn-google:disabled{opacity:.6;cursor:not-allowed}.auth-google-mark{color:#fff;background:#4285f4;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;font-size:11px;font-weight:700;display:inline-flex}.auth-message{text-align:center;min-height:18px;margin-top:10px;font-size:13px}.auth-error{color:#c0392b}.auth-success{color:#27ae60}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.auth-form input:focus-visible{outline-offset:2px;box-shadow:none;outline:2px solid #8a4b08}.auth-btn-primary:focus-visible,.auth-btn-google:focus-visible,.auth-btn-reset:focus-visible,.auth-tab:focus-visible,.auth-close:focus-visible,.auth-header-btn:focus-visible{outline-offset:2px;outline:2px solid #8a4b08}@media (width<=400px){.auth-modal{margin:0 12px;padding:24px 16px 16px}}.skip-link{z-index:9999;color:#fff;background:#8a4b08;border-radius:4px;padding:.5rem 1rem;font-size:13px;font-weight:700;text-decoration:none;position:absolute;top:-100%;left:1rem}.skip-link:focus{top:1rem}label[for]{color:#767676;margin-bottom:2px;font-size:12px;font-weight:600;display:block}.auth-page-body{background:#f4f4f4;justify-content:center;align-items:center;min-height:100vh;margin:0;font-family:"Source Sans 3",Segoe UI,sans-serif;display:flex}.login-card{box-sizing:border-box;background:#fff;border-radius:8px;width:100%;max-width:360px;padding:32px 28px;box-shadow:0 4px 20px #0000001f}.login-logo{text-align:center;margin-bottom:24px}.login-logo h1{color:#8a4b08;margin:0 0 4px;font-size:28px}.login-logo p{color:#767676;margin:0;font-size:13px}.guest-demo-panel{color:#6c4b1f;background:#fff8ef;border:1px solid #f0d8b7;border-radius:8px;margin-top:18px;padding:14px}.guest-demo-panel h2{color:#8a4b08;margin:0 0 8px;font-size:15px}.guest-demo-panel p{margin:0;font-size:13px;line-height:1.5}.guest-demo-actions{gap:10px;margin-top:14px;display:grid}.guest-demo-link{text-align:center;cursor:pointer;border-radius:6px;padding:11px 12px;font-weight:700;text-decoration:none;display:block}.guest-demo-link.primary{color:#fff;background:#8a4b08}.guest-demo-link.secondary{color:#8a4b08;background:#fff;border:1px solid #8a4b08}.auth-page-body.profile-page{justify-content:center;align-items:flex-start;padding:16px}.profile-container{width:100%;max-width:480px;margin:0 auto}.profile-header{background:#fff;border-radius:8px;align-items:center;gap:16px;margin-bottom:12px;padding:24px;display:flex;box-shadow:0 2px 8px #00000014}.profile-avatar{color:#fff;background:#8a4b08;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:60px;height:60px;font-size:24px;font-weight:700;display:flex;overflow:hidden}.profile-avatar img{object-fit:cover;width:100%;height:100%}.profile-name{color:#333;margin:0 0 4px;font-size:18px;font-weight:700}.profile-email{color:#6f6f6f;margin:0;font-size:14px}.stats-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:12px;display:grid}.stats-grid-two-col{grid-template-columns:repeat(2,1fr)}.stat-card{text-align:center;background:#fff;border-radius:8px;padding:16px;box-shadow:0 2px 8px #00000014}.stat-number{color:#8a4b08;margin:0 0 4px;font-size:28px;font-weight:700}.stat-label{color:#6f6f6f;margin:0;font-size:13px}.stat-card.mastered .stat-number{color:#27ae60}.stat-card.learning .stat-number{color:#e67e22}.stat-card.total .stat-number{color:#3498db}.section-card{background:#fff;border-radius:8px;margin-bottom:12px;padding:20px;box-shadow:0 2px 8px #00000014}.section-title{color:#555;text-transform:uppercase;letter-spacing:.5px;margin:0 0 12px;font-size:14px;font-weight:700}.mastery-bar{background:#eee;border-radius:5px;height:10px;margin-bottom:8px;display:flex;overflow:hidden}.mastery-bar-fill{height:100%;transition:width .5s}.mastery-bar-fill.new{background:#3498db}.mastery-bar-fill.learning{background:#e67e22}.mastery-bar-fill.mastered{background:#27ae60}.mastery-legend{color:#666;gap:16px;font-size:12px;display:flex}.mastery-legend span:before{content:"●";margin-right:4px}.mastery-legend .dot-new{color:#3498db}.mastery-legend .dot-learning{color:#e67e22}.mastery-legend .dot-mastered{color:#27ae60}.action-btns{flex-direction:column;gap:8px;display:flex}.btn-back{color:#fff;text-align:center;background:#8a4b08;border-radius:4px;min-height:44px;padding:12px;font-weight:700;text-decoration:none;display:block}.btn-back:hover{background:#a85c0a}.btn-logout{color:#c0392b;text-align:center;cursor:pointer;background:#fff;border:1px solid #c0392b;border-radius:4px;min-height:44px;padding:12px;font-size:14px;font-weight:700;display:block}.btn-logout:hover{background:#fdf2f2}.guest-note{color:#6c4b1f;background:#fff8ef;border:1px solid #f0d8b7;line-height:1.55}.guest-note strong{color:#8a4b08}#loading-state{text-align:center;color:#6f6f6f;padding:40px}.hidden{display:none}