:root{--bg:#f6f7fb;--text:#17202a;--muted:#667085;--card:#fff;--line:#e4e7ec;--brand:#1264ff;--dark:#0b1220}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}.auth-body{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef4ff,#fff)}.login-card{width:min(420px,92vw);background:#fff;padding:32px;border-radius:22px;box-shadow:0 20px 60px rgba(16,24,40,.12)}.login-logo{width:170px;display:block;margin:0 auto 20px}.login-card h1{text-align:center;margin:0}.login-card p{text-align:center;color:var(--muted)}label{display:block;margin:14px 0 6px;font-weight:600}input{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font-size:16px}button{border:0;background:var(--brand);color:#fff;padding:13px 16px;border-radius:12px;font-weight:700;cursor:pointer;width:100%;margin-top:18px}.alert{background:#fff1f3;color:#b42318;border:1px solid #fecdca;padding:10px;border-radius:12px;margin:10px 0}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:var(--dark);color:#fff;padding:22px;display:flex;flex-direction:column}.side-logo{width:170px;background:#fff;border-radius:14px;padding:10px;margin-bottom:22px}.sidebar a{display:block;color:#d0d5dd;text-decoration:none;padding:12px 14px;border-radius:12px;margin:2px 0}.sidebar a:hover{background:rgba(255,255,255,.08);color:#fff}.logout{background:#1d2939;margin-top:auto}.main{margin-left:260px;min-height:100vh}.topbar{height:70px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;padding:24px}.card,.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 8px 24px rgba(16,24,40,.04)}.card span{display:block;color:var(--muted);margin-bottom:8px}.card strong{font-size:28px}.panel{margin:0 24px 24px}.panel h2{margin-top:0}@media(max-width:800px){.sidebar{position:static;width:100%;border-radius:0}.side-logo{width:140px}.main{margin-left:0}.topbar{height:auto;padding:16px;gap:8px;flex-direction:column;align-items:flex-start}.grid{grid-template-columns:1fr;padding:16px}.panel{margin:0 16px 16px}.sidebar nav{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.logout{margin-top:12px}}