Merge 73fb513b42 into 0314d0060b

.gitignore

@@ -0,0 +1 @@
+node_modules/

package.json

@@ -0,0 +1,9 @@
+{
+  "scripts": {
+    "tailwind dev": "npx tailwindcss -i ./src/css/app_src.css -o ./src/css/app.css --watch",
+    "build": "npx tailwindcss -i ./src/css/app_src.css -o ./src/css/app.css && python compile.py"
+  },
+  "devDependencies": {
+    "tailwindcss": "^3.4.3"
+  }
+}

src/css/app.css

@@ -1,30 +1,868 @@
-input[type="number"] {
+/*
-    display: inline-block;
+! tailwindcss v3.4.3 | MIT License | https://tailwindcss.com
-    width: 70px;
+*/
+
+/*
+1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
+2. Allow adding a border to an element by just adding a border-width. (https://github.com/tailwindcss/tailwindcss/pull/116)
+*/
+
+*,
+::before,
+::after {
+  box-sizing: border-box;
+  /* 1 */
+  border-width: 0;
+  /* 2 */
+  border-style: solid;
+  /* 2 */
+  border-color: #e5e7eb;
+  /* 2 */
 }
 
+::before,
+::after {
+  --tw-content: '';
+}
+
+/*
+1. Use a consistent sensible line-height in all browsers.
+2. Prevent adjustments of font size after orientation changes in iOS.
+3. Use a more readable tab size.
+4. Use the user's configured `sans` font-family by default.
+5. Use the user's configured `sans` font-feature-settings by default.
+6. Use the user's configured `sans` font-variation-settings by default.
+7. Disable tap highlights on iOS
+*/
+
+html,
+:host {
+  line-height: 1.5;
+  /* 1 */
+  -webkit-text-size-adjust: 100%;
+  /* 2 */
+  -moz-tab-size: 4;
+  /* 3 */
+  -o-tab-size: 4;
+     tab-size: 4;
+  /* 3 */
+  font-family: sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
+  /* 4 */
+  font-feature-settings: normal;
+  /* 5 */
+  font-variation-settings: normal;
+  /* 6 */
+  -webkit-tap-highlight-color: transparent;
+  /* 7 */
+}
+
+/*
+1. Remove the margin in all browsers.
+2. Inherit line-height from `html` so users can set them as a class directly on the `html` element.
+*/
+
+body {
+  margin: 0;
+  /* 1 */
+  line-height: inherit;
+  /* 2 */
+}
+
+/*
+1. Add the correct height in Firefox.
+2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
+3. Ensure horizontal rules are visible by default.
+*/
+
+hr {
+  height: 0;
+  /* 1 */
+  color: inherit;
+  /* 2 */
+  border-top-width: 1px;
+  /* 3 */
+}
+
+/*
+Add the correct text decoration in Chrome, Edge, and Safari.
+*/
+
+abbr:where([title]) {
+  -webkit-text-decoration: underline dotted;
+          text-decoration: underline dotted;
+}
+
+/*
+Remove the default font size and weight for headings.
+*/
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  font-size: inherit;
+  font-weight: inherit;
+}
+
+/*
+Reset links to optimize for opt-in styling instead of opt-out.
+*/
+
+a {
+  color: inherit;
+  text-decoration: inherit;
+}
+
+/*
+Add the correct font weight in Edge and Safari.
+*/
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+/*
+1. Use the user's configured `mono` font-family by default.
+2. Use the user's configured `mono` font-feature-settings by default.
+3. Use the user's configured `mono` font-variation-settings by default.
+4. Correct the odd `em` font sizing in all browsers.
+*/
+
+code,
+kbd,
+samp,
 pre {
-    font-family: inherit;
+  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-    font-size: inherit;
+  /* 1 */
-    background: inherit;
+  font-feature-settings: normal;
-    border: inherit;
+  /* 2 */
-    word-break: inherit;
+  font-variation-settings: normal;
-    white-space: pre-wrap;
+  /* 3 */
+  font-size: 1em;
+  /* 4 */
 }
 
-.generated {
+/*
-    max-width: 100%;
+Add the correct font size in all browsers.
-    overflow-wrap: break-word;
+*/
+
+small {
+  font-size: 80%;
 }
 
-.part {
+/*
-    padding: 10px 0;
+Prevent `sub` and `sup` elements from affecting the line height in all browsers.
+*/
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
 }
 
-.part:nth-of-type(2n+1) {
+sub {
-    background-color: #F4F4F3;
+  bottom: -0.25em;
 }
 
-.part:nth-of-type(2n+0) {
+sup {
-    background-color: #E9E8E6;
+  top: -0.5em;
+}
+
+/*
+1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
+2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
+3. Remove gaps between table borders by default.
+*/
+
+table {
+  text-indent: 0;
+  /* 1 */
+  border-color: inherit;
+  /* 2 */
+  border-collapse: collapse;
+  /* 3 */
+}
+
+/*
+1. Change the font styles in all browsers.
+2. Remove the margin in Firefox and Safari.
+3. Remove default padding in all browsers.
+*/
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  font-family: inherit;
+  /* 1 */
+  font-feature-settings: inherit;
+  /* 1 */
+  font-variation-settings: inherit;
+  /* 1 */
+  font-size: 100%;
+  /* 1 */
+  font-weight: inherit;
+  /* 1 */
+  line-height: inherit;
+  /* 1 */
+  letter-spacing: inherit;
+  /* 1 */
+  color: inherit;
+  /* 1 */
+  margin: 0;
+  /* 2 */
+  padding: 0;
+  /* 3 */
+}
+
+/*
+Remove the inheritance of text transform in Edge and Firefox.
+*/
+
+button,
+select {
+  text-transform: none;
+}
+
+/*
+1. Correct the inability to style clickable types in iOS and Safari.
+2. Remove default button styles.
+*/
+
+button,
+input:where([type='button']),
+input:where([type='reset']),
+input:where([type='submit']) {
+  -webkit-appearance: button;
+  /* 1 */
+  background-color: transparent;
+  /* 2 */
+  background-image: none;
+  /* 2 */
+}
+
+/*
+Use the modern Firefox focus style for all focusable elements.
+*/
+
+:-moz-focusring {
+  outline: auto;
+}
+
+/*
+Remove the additional `:invalid` styles in Firefox. (https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737)
+*/
+
+:-moz-ui-invalid {
+  box-shadow: none;
+}
+
+/*
+Add the correct vertical alignment in Chrome and Firefox.
+*/
+
+progress {
+  vertical-align: baseline;
+}
+
+/*
+Correct the cursor style of increment and decrement buttons in Safari.
+*/
+
+::-webkit-inner-spin-button,
+::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/*
+1. Correct the odd appearance in Chrome and Safari.
+2. Correct the outline style in Safari.
+*/
+
+[type='search'] {
+  -webkit-appearance: textfield;
+  /* 1 */
+  outline-offset: -2px;
+  /* 2 */
+}
+
+/*
+Remove the inner padding in Chrome and Safari on macOS.
+*/
+
+::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/*
+1. Correct the inability to style clickable types in iOS and Safari.
+2. Change font properties to `inherit` in Safari.
+*/
+
+::-webkit-file-upload-button {
+  -webkit-appearance: button;
+  /* 1 */
+  font: inherit;
+  /* 2 */
+}
+
+/*
+Add the correct display in Chrome and Safari.
+*/
+
+summary {
+  display: list-item;
+}
+
+/*
+Removes the default spacing and border for appropriate elements.
+*/
+
+blockquote,
+dl,
+dd,
+h1,
+h2,
+h3,
+h4,
+h5,
+h6,
+hr,
+figure,
+p,
+pre {
+  margin: 0;
+}
+
+fieldset {
+  margin: 0;
+  padding: 0;
+}
+
+legend {
+  padding: 0;
+}
+
+ol,
+ul,
+menu {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+}
+
+/*
+Reset default styling for dialogs.
+*/
+
+dialog {
+  padding: 0;
+}
+
+/*
+Prevent resizing textareas horizontally by default.
+*/
+
+textarea {
+  resize: vertical;
+}
+
+/*
+1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
+2. Set the default placeholder color to the user's configured gray 400 color.
+*/
+
+input::-moz-placeholder, textarea::-moz-placeholder {
+  opacity: 1;
+  /* 1 */
+  color: #9ca3af;
+  /* 2 */
+}
+
+input::placeholder,
+textarea::placeholder {
+  opacity: 1;
+  /* 1 */
+  color: #9ca3af;
+  /* 2 */
+}
+
+/*
+Set the default cursor for buttons.
+*/
+
+button,
+[role="button"] {
+  cursor: pointer;
+}
+
+/*
+Make sure disabled buttons don't get the pointer cursor.
+*/
+
+:disabled {
+  cursor: default;
+}
+
+/*
+1. Make replaced elements `display: block` by default. (https://github.com/mozdevs/cssremedy/issues/14)
+2. Add `vertical-align: middle` to align replaced elements more sensibly by default. (https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210)
+   This can trigger a poorly considered lint error in some tools but is included by design.
+*/
+
+img,
+svg,
+video,
+canvas,
+audio,
+iframe,
+embed,
+object {
+  display: block;
+  /* 1 */
+  vertical-align: middle;
+  /* 2 */
+}
+
+/*
+Constrain images and videos to the parent width and preserve their intrinsic aspect ratio. (https://github.com/mozdevs/cssremedy/issues/14)
+*/
+
+img,
+video {
+  max-width: 100%;
+  height: auto;
+}
+
+/* Make elements with the HTML hidden attribute stay hidden by default */
+
+[hidden] {
+  display: none;
+}
+
+*, ::before, ::after {
+  --tw-border-spacing-x: 0;
+  --tw-border-spacing-y: 0;
+  --tw-translate-x: 0;
+  --tw-translate-y: 0;
+  --tw-rotate: 0;
+  --tw-skew-x: 0;
+  --tw-skew-y: 0;
+  --tw-scale-x: 1;
+  --tw-scale-y: 1;
+  --tw-pan-x:  ;
+  --tw-pan-y:  ;
+  --tw-pinch-zoom:  ;
+  --tw-scroll-snap-strictness: proximity;
+  --tw-gradient-from-position:  ;
+  --tw-gradient-via-position:  ;
+  --tw-gradient-to-position:  ;
+  --tw-ordinal:  ;
+  --tw-slashed-zero:  ;
+  --tw-numeric-figure:  ;
+  --tw-numeric-spacing:  ;
+  --tw-numeric-fraction:  ;
+  --tw-ring-inset:  ;
+  --tw-ring-offset-width: 0px;
+  --tw-ring-offset-color: #fff;
+  --tw-ring-color: rgb(59 130 246 / 0.5);
+  --tw-ring-offset-shadow: 0 0 #0000;
+  --tw-ring-shadow: 0 0 #0000;
+  --tw-shadow: 0 0 #0000;
+  --tw-shadow-colored: 0 0 #0000;
+  --tw-blur:  ;
+  --tw-brightness:  ;
+  --tw-contrast:  ;
+  --tw-grayscale:  ;
+  --tw-hue-rotate:  ;
+  --tw-invert:  ;
+  --tw-saturate:  ;
+  --tw-sepia:  ;
+  --tw-drop-shadow:  ;
+  --tw-backdrop-blur:  ;
+  --tw-backdrop-brightness:  ;
+  --tw-backdrop-contrast:  ;
+  --tw-backdrop-grayscale:  ;
+  --tw-backdrop-hue-rotate:  ;
+  --tw-backdrop-invert:  ;
+  --tw-backdrop-opacity:  ;
+  --tw-backdrop-saturate:  ;
+  --tw-backdrop-sepia:  ;
+  --tw-contain-size:  ;
+  --tw-contain-layout:  ;
+  --tw-contain-paint:  ;
+  --tw-contain-style:  ;
+}
+
+::backdrop {
+  --tw-border-spacing-x: 0;
+  --tw-border-spacing-y: 0;
+  --tw-translate-x: 0;
+  --tw-translate-y: 0;
+  --tw-rotate: 0;
+  --tw-skew-x: 0;
+  --tw-skew-y: 0;
+  --tw-scale-x: 1;
+  --tw-scale-y: 1;
+  --tw-pan-x:  ;
+  --tw-pan-y:  ;
+  --tw-pinch-zoom:  ;
+  --tw-scroll-snap-strictness: proximity;
+  --tw-gradient-from-position:  ;
+  --tw-gradient-via-position:  ;
+  --tw-gradient-to-position:  ;
+  --tw-ordinal:  ;
+  --tw-slashed-zero:  ;
+  --tw-numeric-figure:  ;
+  --tw-numeric-spacing:  ;
+  --tw-numeric-fraction:  ;
+  --tw-ring-inset:  ;
+  --tw-ring-offset-width: 0px;
+  --tw-ring-offset-color: #fff;
+  --tw-ring-color: rgb(59 130 246 / 0.5);
+  --tw-ring-offset-shadow: 0 0 #0000;
+  --tw-ring-shadow: 0 0 #0000;
+  --tw-shadow: 0 0 #0000;
+  --tw-shadow-colored: 0 0 #0000;
+  --tw-blur:  ;
+  --tw-brightness:  ;
+  --tw-contrast:  ;
+  --tw-grayscale:  ;
+  --tw-hue-rotate:  ;
+  --tw-invert:  ;
+  --tw-saturate:  ;
+  --tw-sepia:  ;
+  --tw-drop-shadow:  ;
+  --tw-backdrop-blur:  ;
+  --tw-backdrop-brightness:  ;
+  --tw-backdrop-contrast:  ;
+  --tw-backdrop-grayscale:  ;
+  --tw-backdrop-hue-rotate:  ;
+  --tw-backdrop-invert:  ;
+  --tw-backdrop-opacity:  ;
+  --tw-backdrop-saturate:  ;
+  --tw-backdrop-sepia:  ;
+  --tw-contain-size:  ;
+  --tw-contain-layout:  ;
+  --tw-contain-paint:  ;
+  --tw-contain-style:  ;
+}
+
+.container {
+  width: 100%;
+}
+
+@media (min-width: 640px) {
+  .container {
+    max-width: 640px;
+  }
+}
+
+@media (min-width: 768px) {
+  .container {
+    max-width: 768px;
+  }
+}
+
+@media (min-width: 1024px) {
+  .container {
+    max-width: 1024px;
+  }
+}
+
+@media (min-width: 1280px) {
+  .container {
+    max-width: 1280px;
+  }
+}
+
+@media (min-width: 1536px) {
+  .container {
+    max-width: 1536px;
+  }
+}
+
+.relative {
+  position: relative;
+}
+
+.-mx-3 {
+  margin-left: -0.75rem;
+  margin-right: -0.75rem;
+}
+
+.my-2 {
+  margin-top: 0.5rem;
+  margin-bottom: 0.5rem;
+}
+
+.my-3 {
+  margin-top: 0.75rem;
+  margin-bottom: 0.75rem;
+}
+
+.my-4 {
+  margin-top: 1rem;
+  margin-bottom: 1rem;
+}
+
+.mb-0 {
+  margin-bottom: 0px;
+}
+
+.mb-1 {
+  margin-bottom: 0.25rem;
+}
+
+.mb-2 {
+  margin-bottom: 0.5rem;
+}
+
+.mb-3 {
+  margin-bottom: 0.75rem;
+}
+
+.mt-4 {
+  margin-top: 1rem;
+}
+
+.flex {
+  display: flex;
+}
+
+.contents {
+  display: contents;
+}
+
+.hidden {
+  display: none;
+}
+
+.w-full {
+  width: 100%;
+}
+
+.max-w-full {
+  max-width: 100%;
+}
+
+.cursor-pointer {
+  cursor: pointer;
+}
+
+.gap-2 {
+  gap: 0.5rem;
+}
+
+.overflow-hidden {
+  overflow: hidden;
+}
+
+.break-words {
+  overflow-wrap: break-word;
+}
+
+.rounded-lg {
+  border-radius: 0.5rem;
+}
+
+.border {
+  border-width: 1px;
+}
+
+.border-0 {
+  border-width: 0px;
+}
+
+.border-b {
+  border-bottom-width: 1px;
+}
+
+.border-solid {
+  border-style: solid;
+}
+
+.border-red-200 {
+  --tw-border-opacity: 1;
+  border-color: rgb(254 202 202 / var(--tw-border-opacity));
+}
+
+.border-zinc-200 {
+  --tw-border-opacity: 1;
+  border-color: rgb(228 228 231 / var(--tw-border-opacity));
+}
+
+.bg-red-100 {
+  --tw-bg-opacity: 1;
+  background-color: rgb(254 226 226 / var(--tw-bg-opacity));
+}
+
+.p-3 {
+  padding: 0.75rem;
+}
+
+.px-12 {
+  padding-left: 3rem;
+  padding-right: 3rem;
+}
+
+.px-2 {
+  padding-left: 0.5rem;
+  padding-right: 0.5rem;
+}
+
+.px-5 {
+  padding-left: 1.25rem;
+  padding-right: 1.25rem;
+}
+
+.py-2 {
+  padding-top: 0.5rem;
+  padding-bottom: 0.5rem;
+}
+
+.py-2\.5 {
+  padding-top: 0.625rem;
+  padding-bottom: 0.625rem;
+}
+
+.font-sans {
+  font-family: sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
+}
+
+.text-3xl {
+  font-size: 1.875rem;
+  line-height: 2.25rem;
+}
+
+.text-4xl {
+  font-size: 2.25rem;
+  line-height: 2.5rem;
+}
+
+.text-sm {
+  font-size: 0.875rem;
+  line-height: 1.25rem;
+}
+
+.font-semibold {
+  font-weight: 600;
+}
+
+.leading-8 {
+  line-height: 2rem;
+}
+
+.text-\[\#333\] {
+  --tw-text-opacity: 1;
+  color: rgb(51 51 51 / var(--tw-text-opacity));
+}
+
+.text-red-700 {
+  --tw-text-opacity: 1;
+  color: rgb(185 28 28 / var(--tw-text-opacity));
+}
+
+.text-sky-600 {
+  --tw-text-opacity: 1;
+  color: rgb(2 132 199 / var(--tw-text-opacity));
+}
+
+.underline {
+  text-decoration-line: underline;
+}
+
+input[type="number"] {
+  display: inline-block;
+  width: 70px;
+}
+
+.active-tab::after {
+  position: absolute;
+  width: 100%;
+  border-radius: 0.375rem;
+  --tw-bg-opacity: 1;
+  background-color: rgb(234 88 12 / var(--tw-bg-opacity));
+  /* background: #f78166; */
+  bottom: calc(50% - 22px);
+  content: "";
+  height: 2px;
+  right: 50%;
+  transform: translate(50%, -50%);
+  z-index: 1;
+}
+
+.form-control {
+  display: block;
+  border-radius: 0.375rem;
+  border-width: 1px;
+  border-style: solid;
+  --tw-border-opacity: 1;
+  border-color: rgb(212 212 216 / var(--tw-border-opacity));
+  --tw-bg-opacity: 1;
+  background-color: rgb(255 255 255 / var(--tw-bg-opacity));
+  padding-left: 0.75rem;
+  padding-right: 0.75rem;
+  padding-top: 0.5rem;
+  padding-bottom: 0.5rem;
+  font-size: 1rem;
+  line-height: 1.5rem;
+  --tw-text-opacity: 1;
+  color: rgb(17 24 39 / var(--tw-text-opacity));
+  transition-property: color, background-color, border-color, text-decoration-color, fill, stroke;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+  transition-duration: 150ms;
+}
+
+.form-control::-moz-placeholder {
+  --tw-text-opacity: 1;
+  color: rgb(156 163 175 / var(--tw-text-opacity));
+}
+
+.form-control::placeholder {
+  --tw-text-opacity: 1;
+  color: rgb(156 163 175 / var(--tw-text-opacity));
+}
+
+.form-control:focus {
+  --tw-border-opacity: 1;
+  border-color: rgb(165 180 252 / var(--tw-border-opacity));
+  outline: 2px solid transparent;
+  outline-offset: 2px;
+  --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+  --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+  box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
+  --tw-ring-color: rgb(199 210 254 / var(--tw-ring-opacity));
+  --tw-ring-opacity: 0.5;
+}
+
+textarea.form-control {
+  width: 100%;
+  resize: vertical;
+}
+
+.odd\:bg-\[\#f4f4f3\]:nth-child(odd) {
+  --tw-bg-opacity: 1;
+  background-color: rgb(244 244 243 / var(--tw-bg-opacity));
+}
+
+.even\:bg-\[\#e9e8e6\]:nth-child(even) {
+  --tw-bg-opacity: 1;
+  background-color: rgb(233 232 230 / var(--tw-bg-opacity));
+}
+
+.hover\:bg-zinc-100:hover {
+  --tw-bg-opacity: 1;
+  background-color: rgb(244 244 245 / var(--tw-bg-opacity));
+}
+
+.hover\:text-sky-800:hover {
+  --tw-text-opacity: 1;
+  color: rgb(7 89 133 / var(--tw-text-opacity));
 }

src/css/app_src.css

@@ -0,0 +1,26 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+input[type="number"] {
+  display: inline-block;
+  width: 70px;
+}
+
+.active-tab::after {
+  @apply absolute w-full rounded-md bg-orange-600;
+  /* background: #f78166; */
+  bottom: calc(50% - 22px);
+  content: "";
+  height: 2px;
+  right: 50%;
+  transform: translate(50%, -50%);
+  z-index: 1;
+}
+
+.form-control {
+  @apply block rounded-md border border-solid border-zinc-300 bg-white px-3 py-2 text-base text-gray-900 transition-colors placeholder:text-gray-400 focus:border-indigo-300 focus:outline-none focus:ring focus:ring-indigo-200 focus:ring-opacity-50;
+}
+textarea.form-control {
+  @apply w-full resize-y;
+}

src/index.html

@@ -3,68 +3,64 @@
     <head>
         <meta charset="utf-8" />
         <title>Shamir Secret Sharing Scheme</title>
-        <link rel="stylesheet" href="css/bootstrap.css">
         <link rel="stylesheet" href="css/app.css">
         <meta content="Shamir Secret Sharing Scheme tool" name="description"/>
         <meta content="width=device-width, initial-scale=1.0" name="viewport" />
         <meta content="Ian Coleman" name="author" />
     </head>
-    <body>
+    <body class="font-sans text-[#333]">
-        <div class="container">
+        <div class="container px-12 my-4">
-            <div class="row">
+            <div class="-mx-3 flex mb-3">
-                <div class="col-sm-12">
+                <div class="px-5">
-                    <h1>Shamir Secret Sharing Scheme</h1>
+                    <h1 class="text-4xl mb-3">Shamir Secret Sharing Scheme</h1>
-                    <p>Split your secret into parts which can be combined back into the original secret using some or all of the parts.</p>
+                    <p class="mb-0">Split your secret into parts which can be combined back into the original secret using some or all of the parts.</p>
                 </div>
             </div>
-            <div class="row">
+            <p id="error-message" class="text-red-700 my-3 w-full p-3 bg-red-100 rounded-lg hidden border-red-200 border"></p>
-                <div class="col-sm-6">
+            <div class="w-full flex gap-2 border-b border-zinc-200 border-solid border-0">
-                    <h2>Split</h2>
+                <div id="split-secret-tab" role="tab" class="px-2 leading-8 mb-1 text-sm font-semibold cursor-pointer hover:bg-zinc-100 rounded-lg relative active-tab">Split Secret</div>
-                    <div>
+                <div id="combine-secret-tab" role="tab" class="px-2 leading-8 mb-1 text-sm cursor-pointer hover:bg-zinc-100 rounded-lg relative">Combine Secret</div>
-                        Require
+            </div>
-                        <input class="required form-control" type="number" value="3" min="2" max="255">
+            <div id="split-secret" class="w-full my-4">
-                        parts from
+                <!-- <h2>Split</h2> -->
-                        <input class="total form-control" type="number" value="5" min="2" max="255">
+                <div class="mb-2">
-                        to reconstruct the following secret
+                    Require
-                    </div>
+                    <input id="required-parts" class="form-control" type="number" value="3" min="2" max="255">
-                    <textarea class="secret form-control" rows=10 placeholder="Enter your secret here"></textarea>
+                    parts from
-                    <h2>Usage</h2>
+                    <input id="total-parts" class="form-control" type="number" value="5" min="2" max="255">
-                    <p>Double click each part below to select the content for that part. Copy and paste the content for each part into <span class="distributesize">5</span> individual files on your computer.</p>
+                    to reconstruct the following secret:
-                    <p>Distribute one file to each person in your group.</p>
-                    <p>If <span class="recreatesize">3</span> of those people can combine the contents of their file using this page, they can view the secret.</p>
-                    <p>Remember to delete the parts from your computer once you're finished. If you use a rubbish bin for deleted files, also remove them from the rubbish bin.</p>
-                    <p class="error text-danger"></p>
-                    <h2>Parts</h2>
-                    <ol class="generated">
-                        <li>Enter your secret above.</li>
-                    </ol>
-                </div>
-                <div class="col-sm-6">
-                    <h2>Combine</h2>
-                    <p class="form-control-static">
-                        Enter the secrets, one per line
-                    </p>
-                    <textarea class="parts form-control" rows=10></textarea>
-                    <h2>Result</h2>
-                    <pre class="combined">Enter your parts above.</pre>
                 </div>
+                <textarea id="secret" class="form-control mb-3" rows=10 placeholder="Enter your secret here"></textarea>
+                <h2 class="text-3xl mb-3">Usage</h2>
+                <p class="mb-1">Double click each part below to select the content for that part. Copy and paste the content for each part into <span id="distributesize">5</span> individual files on your computer.</p>
+                <p class="mb-1">Distribute one file to each person in your group.</p>
+                <p class="mb-1">If <span id="recreatesize">3</span> of those people can combine the contents of their file using this page, they can view the secret.</p>
+                <p class="mb-3">Remember to delete the parts from your computer once you're finished. If you use a rubbish bin for deleted files, also remove them from the rubbish bin.</p>
+                <h2 class="text-3xl my-3">Parts</h2>
+                <ol id="generated" class="max-w-full break-words rounded-lg overflow-hidden">
+                    <li>Enter your secret above.</li>
+                </ol>
+            </div>
+            <div id="combine-secret" class="hidden w-full my-4">
+                <!-- <h2>Combine</h2> -->
+                <p class="my-2 mb-2">
+                    Enter the secrets, one per line
+                </p>
+                <textarea id="parts" class="form-control mb-3" rows=10></textarea>
+                <h2 class="text-3xl mb-3">Result</h2>
+                <p id="combined">Enter your parts above.</p>
             </div>
             <hr>
-            <div class="row">
+            <div class="mt-4">
-                <div class="col-sm-12">
+                <h2 class="text-3xl mb-2">Sources</h2>
-                    <div class="sources">
+                <p class="mb-1"><a href="https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing" class="text-sky-600 underline hover:text-sky-800">Wikipedia entry</a> for shamir secret sharing scheme.</p>
-                        <h2>Sources</h2>
+                <p class="mb-1">This project is 100% open-source. <a href="https://github.com/iancoleman/shamir" class="text-sky-600 underline hover:text-sky-800">View the project source code on GitHub</a></p>
-                        <p><a href="https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing">Wikipedia entry</a> for shamir secret sharing scheme.</p>
+                <p class="mb-1"><a href="https://github.com/grempe/secrets.js" class="text-sky-600 underline hover:text-sky-800">Built with the SSSS javascript library by amper5and and Glenn Rempe</a></p>
-                        <p>This project is 100% open-source code.</p>
+                <p><a href="https://tailwindcss.com/" class="text-sky-600 underline hover:text-sky-800">Styled with Tailwind</a></p>
-                        <p><a href="https://github.com/iancoleman/shamir">Project source code</a></p>
+                <h2 class="text-3xl mb-2 mt-4">Offline Usage</h2>
-                        <p><a href="https://github.com/grempe/secrets.js">SSSS javascript library by amper5and and Glenn Rempe</a></p>
+                <p class="mb-1">This tool has been designed to be used offline.</p>
-                        <p><a href="https://getbootstrap.com/">Bootstrap stylesheet</a></p>
+                <p class="mb-1">In your browser, select file save-as, and save this page as a file.</p>
-                        <h2>Offline Usage</h2>
+                <p>Double-click that file to open it in a browser on any offline computer.</p>
-                        <p>This tool has been designed to be used offline.</p>
-                        <p>In your browser, select file save-as, and save this page as a file.</p>
-                        <p>Double-click that file to open it in a browser on any offline computer.</p>
-                    </div>
-                </div>
             </div>
         </div>
         <script src="js/secrets.js"></script>

src/js/app.js

@@ -2,15 +2,19 @@
 (function() {
 
     var DOM = {};
-    DOM.required = $(".required");
+    DOM.required = $("#required-parts");
-    DOM.total = $(".total");
+    DOM.total = $("#total-parts");
-    DOM.secret = $(".secret");
+    DOM.secret = $("#secret");
-    DOM.distributesize = $(".distributesize");
+    DOM.distributesize = $("#distributesize");
-    DOM.recreatesize = $(".recreatesize");
+    DOM.recreatesize = $("#recreatesize");
-    DOM.error = $(".error");
+    DOM.error = $("#error-message");
-    DOM.generated = $(".generated");
+    DOM.generated = $("#generated");
-    DOM.parts = $(".parts");
+    DOM.parts = $("#parts");
-    DOM.combined = $(".combined");
+    DOM.combined = $("#combined");
+    DOM.splitSecret = $("#split-secret")
+    DOM.splitSecretTab = $("#split-secret-tab")
+    DOM.combineSecret = $("#combine-secret")
+    DOM.combineSecretTab = $("#combine-secret-tab")
 
     function init() {
         // Events
@@ -18,6 +22,35 @@
         DOM.total.addEventListener("input", generateParts);
         DOM.secret.addEventListener("input", generateParts);
         DOM.parts.addEventListener("input", combineParts);
+
+        DOM.splitSecretTab.addEventListener("click", () => {
+            clearError()
+            switchTab(true)
+        })
+        DOM.combineSecretTab.addEventListener("click", () => {
+            clearError()
+            switchTab(false)
+        })
+    }
+
+    function switchTab(split) {
+        DOM.splitSecretTab.classList.toggle("font-semibold", split)
+        DOM.splitSecretTab.classList.toggle("active-tab", split)
+        DOM.combineSecretTab.classList.toggle("font-semibold", !split)
+        DOM.combineSecretTab.classList.toggle("active-tab", !split)
+
+        DOM.splitSecret.classList.toggle("hidden", !split)
+        DOM.combineSecret.classList.toggle("hidden", split)
+    }
+
+    function setError(message) {
+        DOM.error.textContent = "Error: " + message;
+        DOM.error.classList.toggle("hidden", false)
+    }
+
+    function clearError() {
+        DOM.error.textContent = "";
+        DOM.error.classList.toggle("hidden", true)
     }
 
     function generateParts() {
@@ -30,39 +63,39 @@
         var required = parseFloat(DOM.required.value);
         // validate the input
         if (total < 2) {
-            DOM.error.textContent = "Total must be at least 1";
+            setError("Total must be at least 2")
             return;
         }
         else if (total > 255) {
-            DOM.error.textContent = "Total must be at most 255";
+            setError("Total must be at most 255")
             return;
         }
         else if (required < 2) {
-            DOM.error.textContent = "Required must be at least 1";
+            setError("Required must be at least 2")
             return;
         }
         else if (required > 255) {
-            DOM.error.textContent = "Required must be at most 255";
+            setError("Required must be at most 255")
             return;
         }
         else if (isNaN(total)) {
-            DOM.error.textContent = "Invalid value for total";
+            setError("Invalid value for total")
             return;
         }
         else if (isNaN(required)) {
-            DOM.error.textContent = "Invalid value for required";
+            setError("Invalid value for required")
             return;
         }
         else if (required > total) {
-            DOM.error.textContent = "Required must be less than total";
+            setError("Required must be less than total")
             return;
         }
         else if (secret.length == 0) {
-            DOM.error.textContent = "Secret is blank";
+            setError("Secret is blank")
             return;
         }
         else {
-            DOM.error.textContent = "";
+            clearError()
         }
         // Generate the parts to share
         var minPad = 1024; // see https://github.com/amper5and/secrets.js#note-on-security
@@ -71,7 +104,7 @@
         for (var i=0; i<shares.length; i++) {
             var share = shares[i];
             var li = document.createElement("li");
-            li.classList.add("part");
+            li.classList.add("px-2", "py-2.5", "odd:bg-[#f4f4f3]", "even:bg-[#e9e8e6]");
             li.textContent = share;
             DOM.generated.appendChild(li);
         }

tailwind.config.js

@@ -0,0 +1,18 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: ["./src/**/*.{html,js}"],
+  theme: {
+    extend: {
+      fontFamily: {
+        sans: [
+          "sans-serif",
+          "Apple Color Emoji",
+          "Segoe UI Emoji",
+          "Segoe UI Symbol",
+          "Noto Color Emoji",
+        ],
+      },
+    },
+  },
+  plugins: [],
+};