* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6fb;
    color: #172033;
}

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 35px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 35px rgba(0,0,0,0.08);
    text-align: center;
}

.auth-card h1 {
    margin-bottom: 8px;
}

.auth-card p {
    color: #64748b;
}

.auth-card input {
    display: block;
    width: 100%;
    padding: 14px;
    margin-top: 14px;
    border: 1px solid #dbe1ea;
    border-radius: 9px;
    font-size: 14px;
}

.auth-card input[hidden] {
    display: none;
}

.auth-card button {
    width: 100%;
    padding: 14px;
    margin-top: 18px;
    border: none;
    border-radius: 9px;
    background: #2563eb;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.auth-card button:disabled {
    opacity: 0.6;
    cursor: default;
}

#toggleMode {
    background: transparent;
    color: #2563eb;
    margin-top: 8px;
}

#message {
    font-size: 13px;
    overflow-wrap: anywhere;
}