:root{color-scheme:light;--font-sans: "Inter", "Segoe UI", Arial, sans-serif;--brand: #2563eb;--brand-strong: #1e40af;--accent: #f59e0b;--bg: #f6f7fb;--surface: #ffffff;--border: #d9e0ef;--text: #172033;--muted: #65708a;--error: #b42318;--shadow: 0 18px 45px rgba(23, 32, 51, .12)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg);color:var(--text);font-family:var(--font-sans)}button,input{font:inherit}button{border:0;border-radius:8px;padding:.8rem 1rem;background:var(--brand);color:#fff;cursor:pointer}button:hover:not(:disabled){background:var(--brand-strong)}button:disabled{cursor:not-allowed;opacity:.65}input{width:100%;border:1px solid var(--border);border-radius:8px;padding:.78rem .9rem}.screen,.login-screen{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(100%,420px);border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:28px;box-shadow:var(--shadow)}.eyebrow{margin:0 0 8px;color:var(--brand);font-size:.78rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}h1,h2,h3,p{margin-top:0}.muted{color:var(--muted)}.error{color:var(--error)}.form{display:grid;gap:16px;margin-top:24px}.form label{display:grid;gap:8px;font-weight:700}.app-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{min-height:100vh;display:flex;flex-direction:column;justify-content:space-between;gap:24px;padding:28px;background:#111827;color:#fff}.sidebar .muted{color:#cbd5e1}.secondary-button{background:transparent;border:1px solid rgba(255,255,255,.35)}.content{padding:36px}.page-header{max-width:760px;margin-bottom:28px}.dashboard-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.panel{border:1px solid var(--border);border-radius:10px;background:var(--surface);padding:22px}.metric{margin:0 0 8px;color:var(--accent);font-size:2.5rem;font-weight:800}@media(max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{min-height:auto}.content{padding:24px}.dashboard-grid{grid-template-columns:1fr}}