:root {
    --bg: #0f172a;
    --panel: #1e293b;
    --border: #334155;
    --text: #ffffff;
    --muted: #94a3b8;
    --blue: #2563eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg);
    font-family: Arial, Helvetica, sans-serif;
}

.login-card {
    width: 380px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
}

.logo {
    width: 70px;
    display: block;
    margin: auto;
    margin-bottom: 20px;
}

h1 {
    color: white;
    text-align: center;
}

p {
    color: var(--muted);
    text-align: center;
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 6px;
    color: white;
}

input {
    width: 100%;
    padding: 12px;
    margin-bottom: 18px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #0f172a;
    color: white;
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: var(--blue);
    color: white;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    opacity: .9;
}

#message {
    margin-top: 20px;
    text-align: center;
    color: #ef4444;
}