body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f8ff;
    color: #1e293b;
}

.shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.card {
    width: 100%;
    max-width: 460px;
    background: #fff;
    border: 1px solid #d9e7ff;
    border-radius: 16px;
    box-shadow: 0 18px 40px rgba(33, 135, 242, 0.12);
    padding: 1.5rem;
    text-align: center;
}

.logo {
    width: 78px;
    height: auto;
    margin: 0 auto 0.75rem;
    display: block;
}

h1 {
    margin: 0 0 0.25rem;
    color: #2187F2;
    font-size: 1.5rem;
}

p {
    margin: 0 0 1rem;
    color: #475569;
}

.field {
    text-align: left;
    margin-bottom: 0.75rem;
}

label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.65rem 0.7rem;
    border: 1px solid #c6dafb;
    border-radius: 10px;
    font-size: 0.95rem;
}

input:focus {
    outline: none;
    border-color: #2187F2;
    box-shadow: 0 0 0 0.18rem rgba(33, 135, 242, 0.2);
}

.btn {
    width: 100%;
    border: 0;
    border-radius: 10px;
    background: linear-gradient(120deg, #2187F2, #21BBE6);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.7rem;
    cursor: pointer;
    margin-top: 0.25rem;
}

.status {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    text-align: left;
    white-space: pre-wrap;
}

.ok { color: #166534; }
.error { color: #b91c1c; }