:root {
    --navy: #10213d;
    --navy-light: #1b3357;
    --blue: #2463d4;
    --blue-hover: #194fae;
    --background: #f3f6fb;
    --text: #172033;
    --muted: #6b7280;
    --border: #d7deea;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at top left, #ffffff 0, transparent 34%),
        var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

.login-card {
    width: 100%;
    max-width: 440px;
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 22px 55px rgba(16,33,61,.14);
}

.brand-panel {
    padding: 24px 38px 28px;
    text-align: center;
    background: linear-gradient(145deg,var(--navy),var(--navy-light));
    color: white;
}

.logo{
    text-align:center;
    margin-bottom:8px;
}

.logo img{
    width:140px;
    height:auto;
    display:block;
    margin:0 auto;
}
.brand-panel h1{
    margin:0 0 8px;
    font-size:34px;
}

.brand-panel p{
    margin-top:10px;
    color:rgba(255,255,255,.75);
}

.form-panel{
    padding:34px 38px 28px;
}

.field{
    margin-bottom:18px;
}

label{
    display:block;
    margin-bottom:7px;
    font-weight:bold;
}

input{
    width:100%;
    padding:13px;
    border:1px solid var(--border);
    border-radius:9px;
    font-size:16px;
}

button{
    width:100%;
    padding:14px;
    border:none;
    border-radius:9px;
    background:var(--blue);
    color:white;
    font-size:16px;
    font-weight:bold;
    cursor:pointer;
}

button:hover{
    background:var(--blue-hover);
}

.version{
    margin-top:24px;
    text-align:center;
    color:var(--muted);
    font-size:12px;
}