@import url('https://fonts.googleapis.com/css2?family=GDS+Transport:wght@400;700&display=swap');

.cos-validator-container {
    max-width: 960px;
    margin: 30px auto;
    padding: 30px;
    font-family: 'GDS Transport', Arial, sans-serif;
    color: #0b0c0c;
}

.cos-heading {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 30px;
    /* color: #2b970d; */
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 19px;
    font-weight: 400;
}

#cos-input {
    width: calc(100% - 130px);
    padding: 10px;
    border: 2px solid #0b0c0c;
    font-size: 19px;
    line-height: 1.31579;
    box-sizing: border-box;
    border-radius: 0;
    -webkit-appearance: none;
    margin-right: 10px;
}

#cos-input:focus {
    outline: 3px solid #ffdd00;
    box-shadow: 0 0 0 3px #ffdd00;
}

#validate-button {
    padding: 13px 20px;
    background-color: #00703c;
    color: white;
    border: none;
    border-radius: 0;
    cursor: pointer;
    font-size: 19px;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    line-height: 1;
    vertical-align: top;
}

#validate-button:hover {
    background-color: #005a30;
}

#validation-result {
    margin-top: 30px;
    padding: 20px;
    border-left: 5px solid;
    background: #f8f8f8;
    font-size: 19px;
}

.valid-result {
    display: flex;
    align-items: center;
    border-color: #00703c;
    color: #00703c;
}

.invalid-result {
    display: flex;
    align-items: center;
    border-color: #d4351c;
}

.valid-icon {
    color: #00703c;
    font-size: 28px;
    margin-right: 15px;
    font-weight: bold;
}

.invalid-icon {
    color: #d4351c;
    font-size: 28px;
    margin-right: 15px;
    font-weight: bold;
}

.valid-message {
    color: #00703c;
    font-weight: 700;
}

.invalid-message {
    color: #d4351c;
    font-weight: 700;
}

.cos-number-display {
    font-weight: 700;
}

@media (max-width: 640px) {
    #cos-input {
        width: 100%;
        margin-bottom: 10px;
    }
    
    #validate-button {
        width: 100%;
    }
    
    .cos-heading {
        font-size: 32px;
    }
}