body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f6f9;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 16px;
    box-sizing: border-box;
}
.card {
    background: #fff;
    padding: 30px 35px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    width: 340px;
    max-width: 100%;
    box-sizing: border-box;
}
h2 {
    margin-top: 0;
    color: #2c3e50;
    text-align: center;
}
label {
    display: block;
    margin-top: 14px;
    margin-bottom: 4px;
    font-size: 14px;
    color: #444;
}
input[type=text], input[type=password], input[type=tel] {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 16px;
}
button {
    width: 100%;
    margin-top: 20px;
    padding: 10px;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
button:hover {
    background: #2d81b8;
}
button:active {
    background: #256a9c;
}
.msg-error {
    background: #fdecea;
    color: #c0392b;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 13px;
    margin-top: 12px;
}
.msg-success {
    background: #eafaf1;
    color: #1e8449;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 13px;
    margin-top: 12px;
}
.link-row {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
}

@media (max-width: 480px) {
    body {
        align-items: flex-start;
        padding: 30px 12px;
        box-sizing: border-box;
    }
    .card {
        width: 100%;
        max-width: 400px;
        padding: 24px 20px;
        border-radius: 8px;
    }
    h2 {
        font-size: 20px;
    }
    input[type=text], input[type=password], input[type=tel] {
        font-size: 16px; /* prevents iOS auto-zoom on focus */
        padding: 11px 10px;
    }
    button {
        padding: 12px;
        font-size: 16px;
    }
}