@font-face {
  font-family: IRANSansFaNum;
  src: url("https://synergynahid.com/wp-content/themes/essentials/fonts/src/iransans/fanum/woff2/IRANSansWeb(FaNum).woff2");
}
body {
    font-family: IRANSansFaNum, sans-serif;
    margin: 0;
    background-color: #f0f0f0;
    direction: rtl;
}

.container {
    text-align: center;
    margin: 30px;
}

header h1 {
    margin-bottom: 20px;
}

.flex-box {
    display: flex;
    column-gap: 10px;
    justify-content: center;
}

.flex-item {
    flex: auto;
}

select, input[type="number"], input[type="range"] {
    padding: 10px;
    margin-bottom: 20px;
    font-size: 16px;
    font-family: IRANSansFaNum, sans-serif;
    width: 95%;
}

select, input[type="number"] {
    border: 1px solid;
    border-color: #ccc;
    border-radius: 5px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-color: #fff;
}

.circle {
    width: 200px;
    height: 200px;
    background-color: #4CAF50;
    border-radius: 50%;
    margin: 60px auto 60px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 4s cubic-bezier(0.42, 0, 0.58, 1); /* بهبود easing برای نرم‌تر شدن */
    font-family: IRANSansFaNum, sans-serif;
    flex-direction: column;
}

.circle #timer {
    position: absolute;
    top: -40px;
    font-size: 24px;
    color: #333;
}

.circle #breatheText {
    color: white;
    font-size: 24px;
    font-family: IRANSansFaNum, sans-serif;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin: 5px;
    font-family: IRANSansFaNum, sans-serif;
}

button:hover {
    background-color: #45a049;
}

@keyframes breatheIn {
    0%, 100% {
        transform: scale(0.5);
    }
    50% {
        transform: scale(1.5);
    }
}