* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, sans-serif; background: #f5f5f5; display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.login-box { background: #fff; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); width: 100%; max-width: 360px; }
h1 { font-size: 1.4rem; margin-bottom: 1.5rem; text-align: center; }
label { display: block; font-size: 0.9rem; margin-bottom: 0.3rem; color: #333; }
input { width: 100%; padding: 0.6rem; margin-bottom: 1rem; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
button { width: 100%; padding: 0.7rem; background: #1a3a5c; color: #fff; border: none; border-radius: 4px; font-size: 1rem; cursor: pointer; }
button:hover { background: #244e78; }
.error { color: #c00; font-size: 0.9rem; margin-bottom: 1rem; text-align: center; }