:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#080d17;--panel:#0d1624;--panel-2:#101d30;--text:#eef6ff;--muted:#91a4bc;--border:#203048;--input-bg:#07111f;--input-border:#27425f;--accent:#0fb2d1;--accent-border:#3dd6f7;--accent-text:#001921;--brand:#4ddcff;--danger:#ff8a8a;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}[data-theme=light] body{--bg:#edf2f9;--panel:#fff;--panel-2:#f7fbff;--text:#071321;--muted:#48627f;--border:#d7e2ef;--input-bg:#f7fbff;--input-border:#b6c9de;--accent:#0aa0bb;--accent-border:#1cb8d4;--accent-text:#fff;--brand:#129ec0;--danger:#d24545}.auth-layout,.home-layout{place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card,.home-panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;width:min(420px,100%);padding:28px}.brand{color:var(--brand);margin-bottom:8px;font-weight:700}h1,h2{margin:0 0 8px}.muted{color:var(--muted);margin:0 0 20px}.separator{color:var(--muted);margin-bottom:12px}.google-button-slot{min-height:44px}.auth-form{gap:8px;display:grid}label{color:var(--muted);font-size:14px}input{border:1px solid var(--input-border);background:var(--input-bg);width:100%;color:var(--text);border-radius:999px;padding:10px 14px}select{border:1px solid var(--input-border);background:var(--input-bg);width:100%;color:var(--text);border-radius:999px;margin-bottom:10px;padding:10px 14px}.auth-link-row{color:var(--muted);margin:16px 0 0}.auth-link-row a{color:var(--brand)}.error-text{color:var(--danger);margin-top:12px}.success-text{color:var(--accent);margin-top:12px}.form-grid{gap:8px;display:grid}input[type=checkbox]{width:auto;margin-right:8px}button{border:1px solid var(--accent-border);background:var(--accent);color:var(--accent-text);cursor:pointer;border-radius:999px;padding:10px 16px;font-weight:600}button:disabled{opacity:.6;cursor:not-allowed}.dashboard-shell{gap:16px;width:min(1080px,100%);display:grid}.dashboard-header{background:var(--panel);border:1px solid var(--border);border-radius:8px;justify-content:space-between;align-items:flex-start;gap:12px;padding:20px;display:flex}.eyebrow{color:var(--brand);margin:0 0 6px;font-size:13px;font-weight:700}.dashboard-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.dashboard-card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px}.dashboard-card h3{margin:0 0 8px}.dashboard-card .muted{margin-bottom:8px}.leaderboard-card{background:var(--panel-2)}.leaderboard-list{gap:8px;margin:0;padding-left:20px;display:grid}.leaderboard-item{justify-content:space-between;gap:8px;display:flex}.compact-list{gap:8px;margin:0;padding-left:18px;display:grid}.compact-list li{justify-content:space-between;gap:8px;display:flex}.row-actions{align-items:center;gap:8px;display:inline-flex}.row-actions button{padding:4px 10px;font-size:12px}.skill-tree-list{gap:10px;margin:0;padding:0;list-style:none;display:grid}.skill-tree-item{border:1px solid var(--border);border-radius:8px;justify-content:space-between;gap:8px;padding:10px;display:flex}.skill-tree-title{margin:0 0 4px}.skill-badge{border:1px solid var(--accent-border);color:var(--accent);border-radius:999px;align-self:flex-start;padding:2px 10px;font-size:12px}.mastery-track{background:var(--panel-2);border:1px solid var(--border);border-radius:999px;width:100%;height:8px;margin:8px 0 6px;overflow:hidden}.mastery-fill{background:var(--accent);height:100%}@media (width<=900px){.dashboard-grid{grid-template-columns:1fr}.dashboard-header{flex-direction:column;align-items:stretch}}.sidebar-layout{background:var(--bg);min-height:100vh;display:flex}.sidebar{background:var(--panel);border-right:1px solid var(--border);flex-direction:column;width:260px;height:100vh;padding:24px 16px;display:flex;position:sticky;top:0}.sidebar-header{margin-bottom:32px}.sidebar-nav{flex-direction:column;flex:1;gap:8px;display:flex}.sidebar-nav-item{color:var(--text);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:8px;width:100%;padding:10px 16px;font-weight:500;text-decoration:none;transition:background .2s;display:block}.sidebar-nav-item:hover{background:var(--panel-2)}.sidebar-nav-item.active{background:var(--accent);color:var(--accent-text);border-color:var(--accent-border)}.sidebar-footer{border-top:1px solid var(--border);margin-top:24px;padding-top:16px}.main-area{flex-direction:column;flex:1;min-width:0;display:flex}.content-wrapper{flex:1;padding:32px;overflow-y:auto}.main-footer{border-top:1px solid var(--border);background:var(--panel);text-align:center;color:var(--muted);padding:24px 32px;font-size:14px}@media (width<=768px){.sidebar-layout{flex-direction:column}.sidebar{border-right:none;border-bottom:1px solid var(--border);width:100%;height:auto;padding:16px;position:static}.sidebar-nav{flex-direction:row;padding-bottom:8px;overflow-x:auto}.sidebar-nav-item{white-space:nowrap;padding:8px 12px}.sidebar-header{margin-bottom:16px}.sidebar-footer{display:none}}