:root{--bg: #0f172a;--surface: #1e293b;--surface-alt: #273449;--text: #e2e8f0;--text-muted: #94a3b8;--primary: #a78bfa;--primary-dark: #8b5cf6;--danger: #f87171;--border: #334155;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app-shell{min-height:100vh;display:flex}.sidebar{width:220px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:1.5rem 1rem;gap:.25rem}.brand{font-weight:700;font-size:1.1rem;margin-bottom:1rem}.nav-link{color:var(--text-muted);text-decoration:none;padding:.5rem .75rem;border-radius:8px;font-size:.9rem}.nav-link:hover{background:var(--surface-alt)}.nav-link.active{background:var(--surface-alt);color:var(--primary);font-weight:600}.sidebar-footer{margin-top:auto;display:flex;flex-direction:column;gap:.5rem;font-size:.85rem;color:var(--text-muted);padding-top:1rem;border-top:1px solid var(--border)}.app-main{flex:1;padding:2rem;max-width:1100px}.page-center{display:flex;justify-content:center;padding:3rem;color:var(--text-muted)}.auth-card{max-width:400px;margin:5rem auto;padding:2rem;background:var(--surface);border-radius:12px;border:1px solid var(--border)}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}h1{font-size:1.5rem;margin-top:0}h2{font-size:1.1rem;margin-top:0}.form{display:flex;flex-direction:column;gap:1rem}.form-row{flex-direction:row;align-items:end;flex-wrap:wrap}label{display:flex;flex-direction:column;gap:.4rem;font-size:.9rem;color:var(--text-muted)}.checkbox-label{flex-direction:row;align-items:center;gap:.5rem}input,select{background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;padding:.6rem .8rem;color:var(--text);font-size:1rem}.btn{border:none;border-radius:8px;padding:.5rem 1rem;font-size:.9rem;cursor:pointer}.btn-primary{background:var(--primary);color:#1a0f2e;font-weight:600}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--surface-alt);color:var(--text);border:1px solid var(--border)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-danger{background:transparent;color:var(--danger);border:1px solid var(--danger)}.btn:disabled{opacity:.6;cursor:not-allowed}.form-error{color:var(--danger);font-size:.9rem;margin:0}a{color:var(--primary)}.table{width:100%;border-collapse:collapse;font-size:.9rem}.table th,.table td{text-align:left;padding:.5rem;border-bottom:1px solid var(--border);vertical-align:top}.actions-cell{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}.test-result{font-size:.8rem;color:var(--text-muted);width:100%}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem}.stat-card{text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-muted);font-size:.85rem;margin-top:.25rem}.usage-line{color:var(--text-muted)}