[WIP] Replace src/index.css with improved responsive styling and accessibility fixes

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Replace src/index.css with improved responsive styling and accessibility fixes.

Summary:

• The current styling is functional but outdated and has layout issues on small screens. Replace the existing src/index.css with a modern, responsive stylesheet that uses CSS variables, improves spacing, adds accessible focus states, and styles keyboard/key tiles and language badges.

Files to update:

• src/index.css — replace entire file contents with the new CSS below.

New file contents (exact):

:root {
  --bg: #262626;
  --panel: #323232;
  --muted: #D9D9D9;
  --accent: #10A95B;
  --danger: #BA2A2A;
  --glass: rgba(255,255,255,0.03);
  --card-shadow: rgba(0,0,0,0.35);
}

/* Reset / base */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #root { height: 100%; }

body {
  font-family: "Hanken Grotesk", Inter, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg);
  color: var(--muted);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Root container */
#root {
  width: 100%;
  max-width: 520px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Main card */
main {
  width: 100%;
  background: var(--glass);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  box-shadow: 0 6px 18px var(--card-shadow);
}

/* Header */
header {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #F9F4DA;
  text-align: center;
}

h1 {
  font-size: 1.25rem;
  letter-spacing: 0.6px;
  margin-bottom: 2px;
}

h3 { margin: 6px 0 4px; font-weight: 500; }

p { margin: 6px 0; color: var(--muted); }

#instruction {
  font-size: 0.9rem;
  max-width: 420px;
  margin: 6px 0 12px;
  line-height: 1.35;
}

/* Sections and game banners */
section { width: 100%; }

.gameWon, .gameLost, .elims {
  width: 100%;
  border-radius: 8px;
  padding: 10px 12px;
  color: #F9F4DA;
  font-weight: 600;
  box-shadow: 0 6px 12px rgba(0,0,0,0.18);
}

/* ensure correct selectors */
.gameWon { background-color: var(--accent); }
.gameLost { background-color: var(--danger); }
.elims { background-color: #7A5EA7; }

h2 { margin: 8px 0; }

/* Languages list */
.languages {
  display: flex;
  width: 100%;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 8px;
}

.languageCard {
  padding: 6px 8px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}

/* lost language visual */
.languageCard.lost {
  opacity: 0.45;
  transform: translateY(2px) scale(0.98);
  filter: grayscale(0.2);
}

/* Word tiles (targeting spans inside #words so it matches current JSX) */
#words { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; justify-content: center; }

#words span {
  display: inline-grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  min-width: 36px;
  min-height: 36px;
  padding: 6px;
  margin: 4px;
  border-radius: 6px;
  background-color: var(--panel);
  color: var(--muted);
  font-size: 1rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(249,244,218,0.08);
}

/* Keyboard */
#keyboard {
  width: 100%;
  margin: 10px 0;
  padding: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

#keyboard > button {
  padding: 8px 10px;
  margin: 2px;
  min-width: 40px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.04));
  color: var(--muted);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease;
}

/* hover / focus / disabled */
#keyboard > button:hover { transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0,0,0,0.2); }
#keyboard > button:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
#keyboard > button:focus { outline: 3px solid rgba(255,255,255,0.06); outline-offset: 2px; }

/* button states set by clsx */
.correct {
  background-color: rgba(16,169,91,0.95);
  color: #0f1410;
  border-color: rgba(16,169,91,0.95);
  box-shadow: 0 6px 10px rgba(10,120,60,0.12);
}

.wrong {
  background-color: rgba(186,42,42,0.95);
  color: #fff;
  border-color: rgba(186,42,42,0.95);
  box-shadow: 0 6px 10px rgba(120,30,30,0.12);
}

/* New game button */
.new-game {
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  color: #0f1410;
  background-color: var(--accent);
  box-shadow: 0 8px 20px rgba(16,169,91,0.12);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.new-game:hover { transform: translateY(-3px); }

/* Utility / accessibility */
.big-note { font-size: 0.95rem; color: #F9F4DA; }

/* small screens */
@media (max-w...

</details>

*This pull request was created as a result of the following prompt from Copilot chat.*
> Replace src/index.css with improved responsive styling and accessibility fixes.
> 
> Summary:
> - The current styling is functional but outdated and has layout issues on small screens. Replace the existing src/index.css with a modern, responsive stylesheet that uses CSS variables, improves spacing, adds accessible focus states, and styles keyboard/key tiles and language badges.
> 
> Files to update:
> - src/index.css — replace entire file contents with the new CSS below.
> 
> New file contents (exact):
> 
> ```css
> :root {
>   --bg: #262626;
>   --panel: #323232;
>   --muted: #D9D9D9;
>   --accent: #10A95B;
>   --danger: #BA2A2A;
>   --glass: rgba(255,255,255,0.03);
>   --card-shadow: rgba(0,0,0,0.35);
> }
> 
> /* Reset / base */
> * { box-sizing: border-box; margin: 0; padding: 0; }
> html, body, #root { height: 100%; }
> 
> body {
>   font-family: "Hanken Grotesk", Inter, Arial, sans-serif;
>   -webkit-font-smoothing: antialiased;
>   -moz-osx-font-smoothing: grayscale;
>   background-color: var(--bg);
>   color: var(--muted);
>   padding: 24px;
>   display: flex;
>   align-items: center;
>   justify-content: center;
> }
> 
> /* Root container */
> #root {
>   width: 100%;
>   max-width: 520px;
>   display: flex;
>   justify-content: center;
>   align-items: center;
> }
> 
> /* Main card */
> main {
>   width: 100%;
>   background: var(--glass);
>   border-radius: 12px;
>   padding: 20px;
>   display: flex;
>   flex-direction: column;
>   gap: 14px;
>   align-items: center;
>   box-shadow: 0 6px 18px var(--card-shadow);
> }
> 
> /* Header */
> header {
>   display: flex;
>   flex-direction: column;
>   align-items: center;
>   color: #F9F4DA;
>   text-align: center;
> }
> 
> h1 {
>   font-size: 1.25rem;
>   letter-spacing: 0.6px;
>   margin-bottom: 2px;
> }
> 
> h3 { margin: 6px 0 4px; font-weight: 500; }
> 
> p { margin: 6px 0; color: var(--muted); }
> 
> #instruction {
>   font-size: 0.9rem;
>   max-width: 420px;
>   margin: 6px 0 12px;
>   line-height: 1.35;
> }
> 
> /* Sections and game banners */
> section { width: 100%; }
> 
> .gameWon, .gameLost, .elims {
>   width: 100%;
>   border-radius: 8px;
>   padding: 10px 12px;
>   color: #F9F4DA;
>   font-weight: 600;
>   box-shadow: 0 6px 12px rgba(0,0,0,0.18);
> }
> 
> /* ensure correct selectors */
> .gameWon { background-color: var(--accent); }
> .gameLost { background-color: var(--danger); }
> .elims { background-color: #7A5EA7; }
> 
> h2 { margin: 8px 0; }
> 
> /* Languages list */
> .languages {
>   display: flex;
>   width: 100%;
>   flex-wrap: wrap;
>   align-items: center;
>   justify-content: center;
>   gap: 6px;
>   margin-top: 8px;
> }
> 
> .languageCard {
>   padding: 6px 8px;
>   border-radius: 6px;
>   display: inline-flex;
>   align-items: center;
>   gap: 8px;
>   font-size: 0.9rem;
>   transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease;
>   box-shadow: 0 4px 12px rgba(0,0,0,0.18);
> }
> 
> /* lost language visual */
> .languageCard.lost {
>   opacity: 0.45;
>   transform: translateY(2px) scale(0.98);
>   filter: grayscale(0.2);
> }
> 
> /* Word tiles (targeting spans inside #words so it matches current JSX) */
> #words { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; justify-content: center; }
> 
> #words span {
>   display: inline-grid;
>   place-items: center;
>   aspect-ratio: 1 / 1;
>   min-width: 36px;
>   min-height: 36px;
>   padding: 6px;
>   margin: 4px;
>   border-radius: 6px;
>   background-color: var(--panel);
>   color: var(--muted);
>   font-size: 1rem;
>   font-weight: 600;
>   border-bottom: 1px solid rgba(249,244,218,0.08);
> }
> 
> /* Keyboard */
> #keyboard {
>   width: 100%;
>   margin: 10px 0;
>   padding: 6px;
>   display: flex;
>   justify-content: center;
>   align-items: center;
>   gap: 6px;
>   flex-wrap: wrap;
> }
> 
> #keyboard > button {
>   padding: 8px 10px;
>   margin: 2px;
>   min-width: 40px;
>   background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.04));
>   color: var(--muted);
>   border: 1px solid rgba(255,255,255,0.04);
>   border-radius: 6px;
>   cursor: pointer;
>   font-weight: 700;
>   transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease;
> }
> 
> /* hover / focus / disabled */
> #keyboard > button:hover { transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0,0,0,0.2); }
> #keyboard > button:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
> #keyboard > button:focus { outline: 3px solid rgba(255,255,255,0.06); outline-offset: 2px; }
> 
> /* button states set by clsx */
> .correct {
>   background-color: rgba(16,169,91,0.95);
>   color: #0f1410;
>   border-color: rgba(16,169,91,0.95);
>   box-shadow: 0 6px 10px rgba(10,120,60,0.12);
> }
> 
> .wrong {
>   background-color: rgba(186,42,42,0.95);
>   color: #fff;
>   border-color: rgba(186,42,42,0.95);
>   box-shadow: 0 6px 10px rgba(120,30,30,0.12);
> }
> 
> /* New game button */
> .new-game {
>   margin-top: 8px;
>   padding: 8px 16px;
>   border-radius: 8px;
>   font-weight: 700;
>   cursor: pointer;
>   border: none;
>   color: #0f1410;
>   background-color: var(--accent);
>   box-shadow: 0 8px 20px rgba(16,169,91,0.12);
>   transition: transform 120ms ease, box-shadow 120ms ease;
> }
> .new-game:hover { transform: translateY(-3px); }
> 
> /* Utility / accessibility */
> .big-note { font-size: 0.95rem; color: #F9F4DA; }
> 
> /* small screens */
> @media (max-width: 420px) {
>   body { padding: 12px; }
>   main { padding: 14px; }
>   .languageCard { padding: 6px 8px; font-size: 0.85rem; }
>   #words span { min-width: 34px; min-height: 34px; font-size: 0.95rem; }
>   #keyboard > button { padding: 8px 8px; min-width: 36px; }
> }
> 
> /* focus-visible fallback */
> :focus-visible { outline: 3px solid rgba(255,255,255,0.06); outline-offset: 2px; }
> 
> /* keep legacy classes safe */
> .lost { opacity: 0.45 !important; }
> 
> /* micro performance hint */
> .languageCard, .gameWon, .gameLost, .elims { will-change: transform, opacity; }
> ```
> 
> Acceptance criteria:
> - App UI centers and uses the updated card look.
> - #words spans render as square tiles with improved contrast.
> - Keyboard buttons show correct/wrong styles via .correct and .wrong classes already used in AssemblyEndgame.jsx.
> - Language badges still use inline styles and the .lost class remains supported.
> 
> Notes:
> - No component code changes are required. The CSS targets the existing DOM (span inside #words, .languageCard, .lost, and classes for keyboard state).
> - If there are merge conflicts, please rebase onto main.  
> 
> Please create a pull request with this change on the main branch.

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