/* Reset and base */
 * {
     box-sizing: border-box;
 }

 html,
 body {
     /* background-image: linear-gradient(rgba(250, 250, 255, 1), rgba(250, 250, 255, 1)) !important; */
     background-image: linear-gradient(rgba(220, 220, 220, 1), rgba(220, 220, 220, 1)) !important;
     background-position: left top !important;
     background-size: auto !important;
     background-repeat: no-repeat !important;
     font-family: Arial, sans-serif;

 }

 .devicer {
     width: 1140px;
     display: block;
     height: 1px;
     background-color: rgb(0, 0, 0);
     margin-top: 10px;
 }

 main {
     display: flex;
     flex-wrap: wrap;

     max-width: 96rem;
     width: 100%;
     justify-content: center;
     margin-left: auto;
     margin-right: auto;
 }

 form fieldset {
     border: none;
     padding: 0;
     margin: 0;
 }



 .designnew {
     background: white;
     border-radius: 0.375rem;
     box-shadow: 0 4px 6px rgb(0 0 0 / 0.1);
     max-width: 42rem;
     width: 100%;
     margin-left: auto;
     margin-right: auto;
     padding: 1.5rem;
     display: flex;
     flex-direction: column;
     margin-top: 8px;
 }

 @media (min-width: 1216px) and (max-width: 1384px) {
     .designnew {
         background: white;
         border-radius: 0.375rem;
         box-shadow: 0 4px 6px rgb(0 0 0 / 0.1);
         max-width: 36.5rem;
         width: 100%;
         padding: 1.5rem;
         display: flex;
         flex-direction: column;
     }
 }

 .frquncybox {
     background: #fff;
     border-radius: 2px;
     display: inline-block;
     height: 250px;
     margin: 1rem;
     position: relative;
     width: 200px;
 }


h4{
    font-size: 14px;
}
h5{
    font-size: 12px;
}

 ul {
     list-style-type: disc;
     padding-left: 1.25rem;
     margin-top: 0;
     margin-bottom: 1.5rem;
 }

 li {
     font-size: 18px;
     line-height: 1.5;
     margin-bottom: 0.5rem;
     text-align: left;
 }

 strong {
     font-weight: 6 00;
 }


 h1 {
     font-weight: 600;
     font-size: 2rem;
     color: #1a1a1a;
     text-align: center;
     margin: 0 0 0.25rem 0;
 }


 p {

     font-size: 18px;
     text-align: justify;

 }


 p.subtitle {
     text-align: center;
     color: #4a4a4a;
     font-size: 18px;
     font-weight: 400;
     margin: 0 0 1.5rem 0;
 }



 @media (min-width: 320px) and (max-width: 640px) {
     main {
         align-items: center;
     }

     section {
         max-width: 100%;
         width: 100%;
         padding: 1rem 1rem 1.5rem 1rem;
     }

     .row {
         flex-wrap: wrap;
         gap: 1rem;
     }


 }


 @media (max-width: 320px) {

     main {

         align-items: center;
     }

     section {
         max-width: 100%;
         width: 100%;
         padding: 1rem 1rem 1.5rem 1rem;
     }


 }

 .container {
     max-width: 960px;
     width: 100%;
     text-align: center;
 }

 h2 {
     color: #000;
     text-align: center;

 }

 .steps {
     display: flex;
     flex-direction: column;
     gap: 1.5rem;
     justify-content: center;
 }

 @media (min-width: 640px) {
     .steps {
         flex-direction: row;
     }
 }

 .step {
     background-color: rgb(0, 0, 0);
     border-radius: 9999px;
     padding: 0.5rem 1.5rem;
     max-width: 320px;
     margin-left: auto;
     margin-right: auto;
     display: flex;
     align-items: center;
     gap: 1rem;
 }

 .circle {
     width: 2rem;
     height: 2rem;
     border-radius: 9999px;
     border: 1.5px solid rgb(255, 255, 255);
     color: rgb(252, 249, 249);
     font-weight: 600;
     font-size: 0.875rem;
     /* 14px */
     display: flex;
     justify-content: center;
     align-items: center;
     user-select: none;
     flex-shrink: 0;
 }

 .step-text {
     color: rgb(255, 255, 255);
     font-size: 1rem;
     /* 12px */
     line-height: 1.2;
     text-align: left;
 }

 @media (min-width: 768px) {
     .step-text {
         font-size: 1.125rem;
         /* 14px */
     }
 }

 .container {
     max-width: 1120px;
     margin: 0 auto;
     padding: 48px 24px;
 }

 h1 {
     text-align: center;
     font-weight: 400;
     font-size: 2rem;
     margin-bottom: 20px;
     color: black;
     font-weight: 600;
 }

 @media (max-width: 720px) {
     h1 {
         text-align: center;
         font-weight: 400;
         font-size: 1.7rem;
         margin-bottom: 20px;
         color: black;
         font-weight: 600;
     }

     p.subtitle {
         text-align: center;
         color: #4a4a4a;
         font-size: 16px;
         font-weight: 400;
         margin: 0 0 1.5rem 0;
     }

 }

 .content {
     display: flex;
     flex-wrap: wrap;
     gap: 48px 80px;
     color: rgb(12, 12, 12);
     font-size: 14px;
     line-height: 1.6;
 }

 .column {
     flex: 1 1 300px;
     min-width: 280px;
     display: flex;
     flex-direction: column;
     gap: 16px;

     border: 1px solid rgb(0, 0, 0);
     border-radius: 8px;
     padding: 24px 20px;
     box-sizing: border-box;
 }

 .highlight {
     color: rgb(0, 0, 0);
 }

 .unit-name {
     color: white;
     font-weight: 600;
     font-size: 17px;
     margin-bottom: 16px;
     text-align: center;
     border-bottom: 1px solid rgb(0, 0, 0);
     padding-bottom: 8px;
     color: #000;
 }

 @media (max-width: 768px) {
     .content {
         flex-direction: column;
         gap: 32px;
     }

     .column {
         min-width: auto;
     }
 }

 .containers {
     display: flex;
     gap: 12px;
     flex-wrap: wrap;
     justify-content: center;
     max-width: 100%;
     margin-top: 40px;
 }


 .buttonnew {
     display: flex;
     align-items: center;
     gap: 8px;
     padding: 8px 16px;
     border-radius: 4px;
     font-size: 14px;
     color: white;
     text-decoration: none;
     font-family: Arial, sans-serif;
     white-space: nowrap;
     border: none;
     cursor: pointer;
     background-color: transparent;
     transition: background-color 0.2s ease;
     flex-shrink: 0;
     min-width: 100px;
     justify-content: center;
 }

 a.whatsapp {
     background-color: #25D366;
 }

 a.xtwitter {
     background-color: #000000;
     border: 1px solid white;
 }

 a.facebook {
     background-color: #3b5998;
 }

 button.copylink {
     background-color: #555555;
 }

 a:hover,
 button:hover {
     filter: brightness(0.85);
 }

 i {
     font-size: 14px;
 }

 @media (max-width: 480px) {
     .container {
         gap: 8px;
     }

     .buttonnew {
         padding: 8px 12px;
         font-size: 12px;
         min-width: 80px;
         gap: 6px;
     }


     i {
         font-size: 12px;
     }


 }


 @media (max-width:720px) {
     h2 {
         font-weight: 600;
         font-size: 18px;
         margin-bottom: 25px;
     }

     p {
         font-size: 16px;
         /* 16px */
         line-height: 1.625;
     }

 }

 @media (min-width:720px) {
     h2 {
         font-weight: 600;
         font-size: 24px;
         margin-bottom: 25px;
     }

     p {
         font-size: 18px;
         /* 16px */
         line-height: 1.625;
     }

 }

 h1 i {
     font-size: 0.75rem;
 }


 th,
 td {
     border: 1px solid rgb(0, 0, 0);
     /* Tailwind gray-700 */
     padding: 0.5rem 0.75rem;
     text-align: center;
 }

 th {
     font-size: 18px;
     font-weight: bold;

 }

 @media (max-width:720px) {

     table {
         width: 100%;
         border-collapse: collapse;
         font-size: 16px;
         color: rgb(0, 0, 0);
         /* Tailwind gray-300 */
         border: 1px solid rgb(0, 0, 0);
         /* Tailwind gray-700 */
     }
 }

 @media (min-width:720px) {


     table {
         width: 100%;
         border-collapse: collapse;
         font-size: 18px;
         color: rgb(0, 0, 0);
         /* Tailwind gray-300 */
         border: 1px solid rgb(0, 0, 0);
         /* Tailwind gray-700 */
     }
 }

 h3 {
     font-weight: 600;
     font-size: 1.1rem;
     text-align: left;
     margin-bottom: 10px;

 }

 /* <----------------contact-from---------------------------- */

 form {
     margin-top: 24px;
 }

 .row {
     display: flex;
     flex-wrap: nowrap;
     gap: 16px;
     margin-bottom: 16px;
 }

 .input-half {
     flex: 1 1 0;
     min-width: 0;
 }

 .input-full {
     width: 100%;
     margin-bottom: 16px;
 }

 input[type="text"],
 input[type="email"],
 textarea {
     background-color: transparent;
     border: 1px solid #4b5563;
     /* gray-600 */
     border-radius: 4px;
     padding: 12px 16px;
     font-size: 16px;
     color: #000;
     font-family: 'Aria', sans-serif;
     resize: none;
     outline-offset: 2px;
     outline-color: transparent;
     transition: outline-color 0.2s ease;
 }

 input::placeholder,
 textarea::placeholder {
     color: #9ca3af;
     /* gray-400 */
 }

 input:focus,
 textarea:focus {
     outline-color: #2563eb;
     /* blue-600 */
     border-color: #2563eb;
 }

 textarea {
     min-height: 100px;
     margin-top: 0;
 }


 .newbutton {
     background-color: #3742a8;
     /* blue-700 */
     border: none;
     border-radius: 4px;
     color: white;
     font-weight: 600;
     font-size: 18px;
     padding: 10px 20px;
     cursor: pointer;
     display: block;
     margin: 0 auto;
     transition: background-color 0.2s ease;
 }

 .newbutton:hover {
     background-color: #000;
     /* blue-800 */
 }

 @media (max-width: 640px) {
     .row {
         flex-direction: column;
     }

     .input-half {
         flex: 1 1 100%;
     }
 }

 /* <===================.frquncybox========================== */


 .containerssss {
     display: flex;
     flex-wrap: wrap;
     justify-content: center;
     gap: 25px 50px;
     max-width: 100%;
     margin-top: 40px;
     margin-bottom: 40px;

 }

 .door-wrapper {
     display: flex;
     flex-direction: column;
     align-items: center;
     gap: 4px;
     flex-shrink: 0;
     width: 250px;
 }

 .door {
     position: relative;
     width: 250px;
     height: 200px;
     background-color: black;
     cursor: pointer;
     overflow: hidden;
     perspective: 1000px;
     transition: background-color 0.6s ease;
     background: white;
     border-radius: 0.375rem;
     box-shadow: 0 4px 6px rgb(0 0 0 / 0.1);
 }

 .margin-but {

     margin-top: 15px;
 }

 .door-left,
 .door-right {
     position: absolute;
     top: 0;
     height: 100%;
     width: 50%;
     background-color: black;
     border-style: solid;
     border-color: #222;
     border-width: 0 1px 0 0;
     transition: transform 0.6s ease;
     transform-origin: center;
     backface-visibility: hidden;
 }

 .door-right {
     right: 0;
     border-width: 0 0 0 1px;
 }

 .door:hover {
     background-color: white;
 }

 .door:hover .door-left {
     transform: translateX(-100%);
 }

 .door:hover .door-right {
     transform: translateX(100%);
 }

 .label {
     position: relative;
     width: 200px;
     text-align: center;
     font-size: 1.125rem;
     color: #000000;
     padding-top: 6px;
 }

 .label::before {
     content: "";
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 1px;
     background-color: #d1d5db;
 }

 @media (max-width: 520px) {
     .containerssss {
         gap: 16px 12px;
     }

     .door-wrapper {
         width: 150px;
     }

     .door {
         width: 155px;
         height: 195px;
     }

     .label {
         width: 150px;
         font-size: 1rem;
         padding-top: 4px;
     }

 }

 .boxss {
     text-align: center;
     font-family: Arial, sans-serif;
     font-size: 14px;

 }


 .Convert-frequent {
     position: relative;
     display: inline-block;
 }

 .input-frequent {
     width: 100px;
     padding-right: 25px;
     border: 1px solid #999;
     border-radius: 4px;
     pointer-events: none;
 }

 .spam-frequent {
     position: absolute;
     right: 8px;
     top: 50%;
     transform: translateY(-50%);
     color: #555;
 }


 /* Button Section */
 .button-container {
     display: grid;
     /* grid-template-columns: repeat(4, 1fr);  */
     gap: 10px;

 }

 .button-row {
     display: flex;
     justify-content: space-between;
 }

 .btn-convert {
     background-color: #75b1f1;
     color: rgb(0, 0, 0);
     padding: 12px 5px;
     font-size: 16px;
     border: none;
     border-radius: 5px;
     cursor: pointer;
     text-transform: uppercase;
     transition: background-color 0.3s ease;
     text-align: center;
     display: inline-block;
     width: 120px;
 }

 .btn-convert:hover {
     background-color: #3742a836;
 }

 @media (max-width: 768px) {
     .button-container {
         grid-template-columns: repeat(2, 1fr);
         /* 2 columns for mobile */
     }

     .button-row {
         flex-direction: column;
         padding: 3px;
         gap: 10px;
     }

     .btn-convert {
         background-color: #75b1f1;
         color: rgb(0, 0, 0);
         padding: 12px 30px;
         font-size: 14px;
         border: none;
         border-radius: 5px;
         cursor: pointer;
         text-transform: uppercase;
         transition: background-color 0.3s ease;
         text-align: center;
         display: inline-block;
         width: 100%;
     }
 }

 :root {
     --accent: #444A9E;
     --bg: #f4f7fa;
     --white: #fff;
     --gray: #555;
 }



 .input-group {
     margin-bottom: 20px;
 }

 label {
     font-weight: 600;
     display: block;
     margin-bottom: 8px;
     color: #333;
     text-align: center;
 }

 .input-wrapper {
     display: flex;
     align-items: center;
 }

 .input {
     flex: 1;
     padding: 12px;
     font-size: 20px;
     border: 1.5px solid #ccc;
     border-radius: 8px;
     transition: border-color 0.2s;
 }


 .input:focus {
     outline: none;
     border-color: var(--accent);
 }

 .unit {
     margin-left: 12px;
     color: var(--gray);
     font-weight: bold;
 }

 #rad-result {
     margin-top: 18px;
     font-weight: 500;
     background: #eef5ff;
     padding: 12px 15px;
     border-left: 4px solid var(--accent);
     border-radius: 6px;
     color: #222;
 }

 .btn-group {
     display: flex;
     justify-content: space-between;
     margin-top: 15px;
     gap: 10px;
     flex-wrap: wrap;
 }

 .btn {
     flex: 1;
     background: var(--accent);
     color: white;
     padding: 10px 14px;
     border: none;
     border-radius: 6px;
     cursor: pointer;
     font-size: 14px;
     text-align: center;
     transition: background 0.3s ease;
 }

 .btn:hover {
     background: #444A9E;
 }

 .input-with-unit {
     position: relative;
     width: 100%;
 }

 .input-with-unit .input {
     width: 100%;
     padding-right: 50px;
     /* make room for unit */
 }

 .unit-inside {
     position: absolute;
     right: 12px;
     top: 50%;
     transform: translateY(-50%);
     color: #777;
     font-size: 14px;
     pointer-events: none;
 }

 .info-box {
     margin-top: 10px;
     background-color: #fffbea;
     border-left: 4px solid #ffc107;
     padding: 15px 20px;
     border-radius: 8px;
     font-size: 15px;
     color: #5b5300;
     line-height: 1.6;
     box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
 }

 .math-box {
     background-color: #f8f8f8;
     border: 1px solid #ddd;
     padding: 12px 18px;
     border-radius: 12px;
     font-weight: bold;
     font-family: 'Aria', sans-serif;
     font-size: 18px;
     color: #333;
     display: inline-block;
     margin: 20px 0;
     box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
 }

 .math-box em {
     font-style: italic;
 }

 .math-boxs {
     background-color: #444A9E;
     color: white;
     border: 1px solid #ddd;
     padding: 12px 18px;
     border-radius: 12px;
     font-weight: bold;
     font-family: 'Aria', sans-serif;
     font-size: 18px;

     display: inline-block;
     margin: 20px 0;
     box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
 }

 .math-boxs em {
     font-style: italic;
 }



 .feedback-container {
     background: #fff;
     padding: 20px 25px;
     border-radius: 8px;
     box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
     max-width: 800px;
     border: 1px solid #444A9E;
     margin-left: auto;
     margin-right: auto;
 }

 .feedback-container input.datatext {
     width: 100%;
     padding: 10px;
     margin-bottom: 10px;
     font-size: 1rem;
     border: 1px solid #ccc;
     border-radius: 5px;
     max-height: 50px;
 }

 .datatext {
     width: 100%;
     height: 120px;
     padding: 10px;
     font-size: 16px;
     border: 1px solid #ccc;
     border-radius: 6px;
     resize: vertical;
     font-family: 'Aria  ', sans-serif;
     box-sizing: border-box;
 }

 .thank-you {
     margin-top: 15px;
     color: green;
     font-weight: 600;
     display: none;
 }

 .newbutton {
     margin-top: 12px;
     background: #444A9E;
     border: none;
     color: white;
     font-size: 16px;
     padding: 10px 15px;
     border-radius: 6px;
     cursor: pointer;
     width: 100%;
     transition: background-color 0.3s ease;
 }

 /* Center label text */
 .form-label {
     display: block;
     text-align: center;
     font-weight: 600;
 }

 @media (max-width: 500px) {
     .input-wrapper {
         flex-direction: column;
         align-items: stretch;
     }

     .unit {
         margin: 6px 0 0;
         text-align: right;
     }

     .btn-group {
         flex-direction: column;
     }

     .input {
         flex: 1;
         padding: 12px;
         font-size: 16px;
         border: 1.5px solid #ccc;
         border-radius: 8px;
         transition: border-color 0.2s;
     }

 }

 #rad-resultss {
     margin-top: 18px;
     font-weight: 500;
     background: #eef5ff;
     padding: 12px 15px;
     border-left: 4px solid var(--accent);
     border-radius: 6px;
     color: #222;
 }

 .back-to-top-btn {
     position: fixed;
     bottom: 20px;
     right: 20px;
     display: none;
     /* Initially hidden */
     padding: 10px 15px;
     background-color: #444A9E;
     color: white;
     border: none;
     border-radius: 5px;
     cursor: pointer;
     font-size: 16px;
 }

 .back-to-top-btn:hover {
     background-color: #000;
 }