html {
    font-family: 'Fira Sans', sans-serif;
    font-size: 20px;
    letter-spacing: 0.30px;
    min-height: 100vh;
    color: #d8e9ef;
    background-image: linear-gradient(-20deg, #0c554f 0%, #061958 100%);
    background-size: cover;
}

h1 {
    margin: 0 auto 10px auto;
    font-size: 215%;
    color: #d8e9ef;
}

p {
    margin: 0;
}

.app-message {
    height: 20px;
    margin: 10px auto 20px auto;
    letter-spacing: 1px;
}

.app-body {
    width: 250px;
    height: 420px;
    margin: 40px auto;
    text-align: center;
    border-radius: 5px;
    padding: 20px;
}

.app-circle {
    position: relative;
    margin: 0 auto;
    width: 200px;
    height: 200px;
}

.circle-shape {
    pointer-events: none;
}

.semi-circle {
    position: absolute;
    width: 100px;
    height: 200px;
    box-sizing: border-box;
    border: solid 7px;
}

.left-side {
    top: 0;
    left: 0;
    transform-origin: right center;
    transform: rotate(0deg);
    border-top-left-radius: 100px;
    border-bottom-left-radius: 100px;
    border-right: none;
    z-index: 1;
}

.right-side {
    top: 0;
    left: 100px;
    transform-origin: left center;
    transform: rotate(0deg);
    border-top-right-radius: 100px;
    border-bottom-right-radius: 100px;
    border-left: none;
}

.circle {
    border-color: #07224b;
}

.circle-mask {
    border-color: #0c554f;
}

button:hover{
    color: #0c554f;
}

.app-counter{
    font-family:'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    font-size: 250%;
    position: relative;
    top: 70px;
    color: #d8e9ef;
}

button {
    font-family:'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    position: relative;
    top: 60px;
    font-size: 110%;
    letter-spacing: 1px;
    border: none;
    background: none;
    outline: none;
    color: #d8e9ef;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    white-space: nowrap;
}

.top-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}
.buttons {
    margin-top: 110px;
}

.bottom-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: nowrap;
    margin-top: 5px;
}

.disabled-button {
    opacity: 0.5;
    pointer-events: none;
}