:root {
    color-scheme: light dark;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    background: #f4f5f7;
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.login-card label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #333;
}

.login-card input {
    padding: 0.5rem 0.6rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    width: 100%;
}

.login-card button {
    margin-top: 0.5rem;
    padding: 0.6rem;
    border: none;
    border-radius: 4px;
    background: #b3261e;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
}

.login-card button:hover {
    background: #93201a;
}

.login-error {
    color: #b3261e;
    font-size: 0.85rem;
}

.login-error:empty {
    display: none;
}

@media (prefers-color-scheme: dark) {
    body {
        background: #1c1c1e;
    }

    .login-card {
        background: #2c2c2e;
        box-shadow: none;
    }

    .login-card label {
        color: #e5e5e5;
    }

    .login-card input {
        background: #3a3a3c;
        border-color: #545456;
        color: #fff;
    }
}