* { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    font-family: Arial, Helvetica, sans-serif;
    background: #edf2f7;
    color: #18202a;
}
.login-panel {
    width: min(420px, calc(100vw - 32px));
    background: #fff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 28px;
    box-shadow: 0 12px 30px rgba(24, 32, 42, .12);
}
.login-logo { display: block; max-width: 160px; margin-left: auto; }
h1 { margin: 16px 0 24px; font-size: 24px; }
label { display: grid; gap: 6px; margin-bottom: 14px; font-weight: 700; }
input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #9ca3af;
    border-radius: 6px;
    font: inherit;
}
button {
    width: 100%;
    border: 0;
    border-radius: 6px;
    background: #1f6feb;
    color: #fff;
    padding: 11px 16px;
    font-weight: 700;
    cursor: pointer;
}