* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #1b1b1c;
  color: #ddd;
  margin: 0;
}

.title {
    padding: 10px;
    text-align: center;
    font-size: 35px;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    font-weight: 700;
}

.subtitle {
    padding: 10px;
    text-align: center;
    font-size: 20 px;
}

.content {
    background-color: #1f1e21;
    padding: 40px 20px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    
    /* Centering the "Rectangle" itself on the page */
    margin: 40px auto; 
    width: 90%;

    /* --- THE INNER ALIGNMENT --- */
    display: flex;
    flex-direction: column;
    align-items: center;      /* Keeps everything centered HORIZONTALLY */
    justify-content: flex-start; /* Aligns everything to the TOP (Vertical) */
    
    /* min-height ensures the box still looks like a large rectangle 
       even if there isn't much content inside yet */
    min-height: 80vh;      
}
.embed {
    padding: 30px;
    text-align: center;
}

/* Responsive layout - makes the three columns stack on top of each other instead of next to each other */
@media (max-width: 600px) {
  .column.side, .column.middle {
    width: 100%;
  }
}

/* Add a black background color to the top navigation */
.topnav {
  background-color: #181818;
  overflow: hidden;
}

/* Base styles for all links in the nav */
.topnav a {
  color: white;
  text-decoration: none;
  padding: 20px 20px;
  display: inline-block;
  transition: all 0.3s ease; /* Makes the zoom and border smooth */
  border: 2px solid transparent; /* Prevents jumping when border appears */
  border-radius: 20px;
}

/* The "Selected" state (Home) and Hover state */ 
.topnav a:hover {
  transform: scale(1.1);     /* The zoom effect (1.1 = 110% size) */
  background-color: rgb(35, 33, 43);
  border-radius: 12px;
}

/* Pitch Perfect */


.filter-btn {
    background-color: #333; /* Dark/Off state */
    color: #777;
    border: 2px solid #444;
    width: 50px;
    height: 50px;
    padding: 10px;
    margin: 2px;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 5px;
}

.filter-btn.active {
    background-color: #444b58; /* Green/On state */
    color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
    border: none;
}

.filter-btn:hover {
    transform: translateY(-2px);
}

.guess-btn {
    color: white;
    text-decoration: none;
    width: 50px;
    height: 50px;
    display: inline-block;
    transition: all 0.3s ease; /* Makes the zoom and border smooth */
    border: 2px solid transparent; /* Prevents jumping when border appears */
    border-radius: 10px;
    background-color: #181818;
}

.guess-btn:hover {
    background-color: #313137; /* Lightens the black slightly */
    transform: translateY(-2px); /* Optional: lifts the button up slightly */
    cursor: pointer;
}

:root {
    /* Change this to 60px, 80px, etc. and EVERYTHING will grow perfectly */
    --w-width: 60px; 
}

.piano {
    padding: 30px;
    display: flex;
    justify-content: center;
    /* This prevents keys from squishing if the screen is too small */
    flex-shrink: 0; 
}

.white {
    width: var(--w-width);
    height: calc(var(--w-width) * 3.75); /* Keeps your 150px ratio */
    background: white;
    border: 1px solid black;
    cursor: pointer;
    border-radius: 5px;
    position: relative;
    z-index: 1;
}

.black {
    /* This keeps the black key at 75% of the white key width */
    width: calc(var(--w-width) * 0.75); 
    height: calc(var(--w-width) * 2.25); /* Keeps your 90px ratio */
    background: black;
    border-radius: 0 0 5px 5px; /* Pianos usually only round the bottom */
    
    /* This centers the black key exactly on the line between white keys */
    margin-left: calc(var(--w-width) * -0.375); 
    margin-right: calc(var(--w-width) * -0.375);
    
    z-index: 2;
    cursor: pointer;
}

/* Hover effects stay the same */
.white:hover { background-color: #a1a1a1; }
.black:hover { background-color: #313137; }

#status-message {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    margin-top: 30px;
    height: 40px; /* Reserves space so the page doesn't jump */
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

/* Ensure the keys have a smooth color transition */
.key, .guess-btn {
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.stats {
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.2rem;
    color: #cecece;
    margin-bottom: 10px;
    text-transform: uppercase;
}

#accuracy {
    font-weight: bold;
    color: #4caf50;
    transition: color 0.3s ease;
}

/* Center the button container */
.controls {
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

/* Center the button container */
.controls {
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.main-action-btn {
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 15px 40px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 10px;
    background-color: #181818;
    min-width: 200px;
    
    /* ADD THIS LINE */
    border: none; 
    
    /* Optional: If you want to ensure it doesn't show an 
       outline when clicked (blue ring), add this too: */
    outline: none; 
}

.main-action-btn:hover {
    transform: scale(1.05);
    background-color: #2b2a2d; /* Turns green on hover */
    color: white;
    box-shadow: 0 0 20px rgba(30, 30, 30, 0.4);
}