body {
  font-family: "Proxima Nova", sans-serif;
  background-color: #f5f5f5;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  background-color: #1a1a1a;
  color: #ffc907;
  padding: 1em;
  text-align: center;
}

header h1 {
  font-size: 2.5em; /* Larger heading size */
  margin: 0 0 0.5em 0; /* Remove default margin and add bottom spacing */
  font-weight: bold;
  letter-spacing: 1px; /* Slight letter spacing for elegance */
}

#charity-link {
  margin-top: 0.5em;
  position: relative;
}

.charity-logo {
  max-width: 180px;
  height: auto;
  transition: transform 0.2s;
}

.charity-logo:hover {
  transform: scale(1.05);
}

/* Modify title tooltip to appear instantly */
#charity-link a::before {
  content: attr(title);
  position: absolute;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 10px;
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  border-radius: 4px;
  font-size: 0.9em;
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 100;
}

#charity-link a:hover::before {
  opacity: 1;
  transition-delay: 0s; /* Make it appear instantly */
}

/* === Game HUD (Heads Up Display) === */
/* The bar showing time and score */
#hud {
  display: flex; /* Uses flexible layout */
  justify-content: space-around; /* Spaces items evenly */
  background: #eee; /* Light gray background */
  padding: 1em; /* Space inside the HUD */
  font-size: 1.2em; /* Larger text size */
}

/* === Main Game Area === */
/* Container for all game elements */
#game-container {
  display: flex; /* Uses flexible layout */
  justify-content: center; /* Centers content horizontally */
  align-items: flex-start; /* Aligns items to the top */
  padding: 1em; /* Space inside the container */
  gap: 2em; /* Space between elements */
}

/* === Difficulty Selector === */
/* Container for difficulty dropdown */
#difficulty-selector {
  width: 160px; /* Fixed width to match pipe-queue */
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Difficulty selector label */
.difficulty-label {
  font-weight: bold;
  color: #003366;
  text-align: center;
  margin-bottom: 5px;
}

/* Difficulty dropdown styling */
#difficulty-select {
  padding: 8px 12px;
  border: 2px solid #003366;
  border-radius: 4px;
  background-color: white;
  color: #333;
  font-size: 1em;
  cursor: pointer;
  transition: all 0.3s;
  width: 100%;
  box-sizing: border-box;
}

/* Dropdown hover effect */
#difficulty-select:hover {
  border-color: #ffc907;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Dropdown focus effect */
#difficulty-select:focus {
  outline: none;
  border-color: #ffc907;
  box-shadow: 0 0 0 2px rgba(255, 201, 7, 0.2);
}

/* Difficulty info display */
.difficulty-info {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  padding: 10px;
  font-size: 0.85em;
  color: #495057;
  line-height: 1.4;
}

.difficulty-info h4 {
  margin: 0 0 8px 0;
  color: #003366;
  font-size: 1em;
}

.difficulty-info ul {
  margin: 0;
  padding-left: 16px;
}

.difficulty-info li {
  margin-bottom: 3px;
}

/* The 10x10 game grid */
#grid {
  display: grid; /* Creates a grid layout */
  grid-template-columns: repeat(10, 40px); /* 10 columns of 40px each */
  grid-template-rows: repeat(10, 40px); /* 10 rows of 40px each */
  gap: 2px; /* Small gap between grid cells */
  background-color: #ccc; /* Gray background for the grid */
}

/* Individual cells in the grid */
.grid-tile {
  width: 40px; /* Fixed width */
  height: 40px; /* Fixed height */
  background-color: white; /* White background */
  border: 1px solid #999; /* Gray border */
  display: flex; /* For centering content */
  justify-content: center; /* Centers horizontally */
  align-items: center; /* Centers vertically */
  position: relative; /* For proper image positioning */
}

/* Special styling for different element types */
.water_source {
  background-color:  #8BD1CB; /* Light blue for water source */
}

.village {
  background-color: #ffe8a9; /* Light yellow for villages */
}

.rock {
  background-color: #d9d9d9; /* Gray for rock barriers */
}

.trash {
  background-color: #ffd6d6; /* Light red for trash barriers */
}

/* Image styling inside grid tiles */
.pipe-image,
.element-image {
  max-width: 90%; /* Limits image size */
  max-height: 90%; /* Ensures image fits in tile */
  object-fit: contain; /* Maintains aspect ratio */
}

/* Pipe queue area */
#pipe-queue {
  width: 160px; /* Fixed width */
}

/* Container for the pipe previews */
#queue {
  display: flex; /* Flexible layout */
  flex-direction: column; /* Stack vertically */
  gap: 5px; /* Space between items */
}

/* === Button Styling === */
/* Container for stacked buttons */
.button-stack {
  display: flex; /* Flexible layout */
  flex-direction: column; /* Stack vertically */
  gap: 10px; /* Space between buttons */
  width: 160px; /* Fixed width */
  align-self: center; /* Center vertically in parent */
  margin-bottom: 10px; /* Space below */
}

/* General button styling */
button {
  padding: 0.75em 1.5em; /* Space inside buttons */
  border: none; /* No border */
  font-size: 1em; /* Text size */
  cursor: pointer; /* Hand cursor on hover */
  transition: all 0.3s; /* Smooth animations */
  border-radius: 4px; /* Rounded corners */
  width: 100%; /* Full width of parent */
}

/* Start button */
#start-btn {
  background-color: #ffC907; /* Yellow/gold color */
  color: #333; /* Dark text */
}

/* Reset button */
#reset-btn {
  background-color:  #F5402C; /* Red color */
  color: white; /* White text */
}

/* Next round button */
#next-round-btn {
  background-color: #2E9DF7; /* Dark blue color */
  color: white; /* White text */
  border: none;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold; /* Bold text */
}

/* Disabled next round button */
#next-round-btn:disabled {
  background-color: #8BD1CB; /* Lighter blue */
  cursor: not-allowed; /* Indicates button can't be used */
}

/* Button hover effect - moves slightly up */
button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1); /* Subtle shadow */
}

/* Button active effect - moves back to normal position */
button:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* Smaller shadow */
}

/* Disabled button styling */
button:disabled {
  opacity: 0.6; /* Makes it semi-transparent */
  cursor: not-allowed; /* Change cursor */
  transform: none; /* No hover effect */
  box-shadow: none; /* No shadow */
}

/* === Timer and Visual Effects === */
/* Timer display */
#timer {
  font-weight: bold; /* Bold text */
  transition: color 0.3s; /* Smooth color transition */
}

/* Timer when time is up */
.time-up {
  color: red; /* Red text */
  animation: blink 1s infinite; /* Blinking animation */
}

/* Blinking animation keyframes */
@keyframes blink {
  0% { opacity: 1; } /* Fully visible */
  50% { opacity: 0.5; } /* Half transparent */
  100% { opacity: 1; } /* Fully visible again */
}

/* Pipe tile styling */
.pipe {
  background-color: #e6e6e6; /* Light gray background */
  cursor: pointer; /* Hand cursor */
  position: relative; /* For overlay positioning */
}

/* Creates a hover effect overlay for pipes */
.pipe::before {
  content: ''; /* Required for ::before to work */
  position: absolute; /* Positioned relative to pipe */
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 0, 0, 0.1); /* Light red overlay */
  opacity: 0; /* Hidden by default */
  transition: opacity 0.2s; /* Smooth fade */
}

/* Shows the overlay when hovering */
.pipe:hover::before {
  opacity: 1; /* Fully visible */
}

/* Makes the overlay darker when clicking */
.pipe:active::before {
  background-color: rgba(255, 0, 0, 0.3); /* Darker red */
}

/* Timer penalty styling */
.time-penalty {
  color: #ff3333 !important; /* Red text */
  font-size: 1.2em; /* Larger text */
  animation: pulse 0.5s ease-out; /* Pulse animation */
}

/* Pulse animation keyframes */
@keyframes pulse {
  0% { transform: scale(1); } /* Normal size */
  50% { transform: scale(1.2); } /* 20% bigger */
  100% { transform: scale(1); } /* Back to normal */
}

/* Game info box styling */
.game-info {
  margin-top: 20px; /* Space above */
  padding: 10px; /* Space inside */
  background-color: #f5e5c0; /* Light orange background */
  border-radius: 5px; /* Rounded corners */
  font-size: 0.9em; /* Smaller text */
}

/* Text inside game info box */
.info-text {
  margin: 0;
  color: #b33a00; /* Dark orange/red text */
  font-weight: bold; /* Bold text */
}

/* Final score styling */
.final-score {
  font-weight: bold; /* Bold text */
  color: #007bff; /* Blue color */
  animation: score-pulse 1s ease-in-out 3; /* Pulse 3 times */
}

/* Score pulse animation */
@keyframes score-pulse {
  0% { transform: scale(1); } /* Normal size */
  50% { transform: scale(1.2); } /* 20% bigger */
  100% { transform: scale(1); } /* Back to normal */
}

/* === Instructions Section === */
/* Container for the instructions */
#instructions {
  max-width: 900px; /* Maximum width */
  margin: 20px auto; /* Center horizontally with space above/below */
  padding: 15px; /* Space inside */
  text-align: center; /* Center text */
}

/* Instructions title */
#instructions h2 {
  color: #003366; /* Dark blue */
  margin-bottom: 20px;
  font-size: 1.8em; /* Large text */
}

/* Container for instruction boxes */
.instructions-container {
  display: flex; /* Flexible layout */
  justify-content: center; /* Center horizontally */
  flex-wrap: wrap; /* Wrap to new row if needed */
  gap: 20px; /* Space between boxes */
}

/* Individual instruction box */
.instruction-box {
  background-color: white; /* White background */
  border-radius: 8px; /* Rounded corners */
  padding: 15px; /* Space inside */
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1); /* Subtle shadow */
  flex: 1; /* Grow to available space */
  min-width: 250px; /* Minimum width */
  max-width: 350px; /* Maximum width */
}

/* Instruction box headers */
.instruction-box h3 {
  color: #ffC907; /* Yellow/gold text */
  background-color: #003366; /* Dark blue background */
  padding: 8px; /* Space inside */
  border-radius: 4px; /* Rounded corners */
  margin-top: 0; /* No space above */
}

/* Lists inside instruction boxes */
.instruction-box ol,
.instruction-box ul {
  text-align: left; /* Left-align text */
  padding-left: 25px; /* Space for list markers */
  line-height: 1.6; /* More space between lines */
}

/* List items */
.instruction-box li {
  margin-bottom: 8px; /* Space between items */
}

/* Styling for positive points in scoring */
.positive {
  color: #2e8b57; /* Green color */
  font-weight: bold; /* Bold text */
}

/* Styling for negative points in scoring */
.negative {
  color: #dd3333; /* Red color */
  font-weight: bold; /* Bold text */
}

/* === Modal Popup for Water Facts === */
/* Full-screen modal background */
.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Fixed position over everything */
  z-index: 1000; /* Ensures it's on top */
  left: 0;
  top: 0;
  width: 100%; /* Full width */
  height: 100%; /* Full height */
  background-color: rgba(0, 0, 0, 0.7); /* Semi-transparent dark overlay */
  overflow: auto; /* Allow scrolling if needed */
}

/* Modal content container */
.modal-content {
  background-color: #fefefe; /* White background */
  margin: 15% auto; /* Center vertically with space above */
  padding: 0;
  border: 1px solid #888; /* Gray border */
  border-radius: 8px; /* Rounded corners */
  width: 60%; /* Take up 60% of screen width */
  max-width: 500px; /* But not more than 500px */
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3); /* Shadow for depth */
  animation: modalFadeIn 0.4s; /* Entrance animation */
}

/* Animation for modal appearing */
@keyframes modalFadeIn {
  from {opacity: 0; transform: translateY(-50px);} /* Start from above and invisible */
  to {opacity: 1; transform: translateY(0);} /* End at normal position and visible */
}

/* Modal header */
.modal-header {
  padding: 15px 20px; /* Space inside */
  background-color: #003366; /* Dark blue */
  color: #ffC907; /* Yellow/gold text */
  border-top-left-radius: 8px; /* Rounded top corners */
  border-top-right-radius: 8px;
}

/* Modal title */
.modal-header h3 {
  margin: 0; /* No margin */
  font-size: 1.4em; /* Larger text */
}

/* Modal body area */
.modal-body {
  padding: 20px; /* Space inside */
}

/* Main fact text */
.fact-text {
  font-size: 1.1em; /* Slightly larger text */
  margin-bottom: 15px; /* Space below */
  line-height: 1.5; /* Space between lines */
}

/* Source citation for fact */
.fact-source {
  font-size: 0.9em; /* Smaller text */
  color: #666; /* Medium gray */
  font-style: italic; /* Italicized */
}

/* Modal footer */
.modal-footer {
  padding: 15px 20px; /* Space inside */
  background-color: #f5f5f5; /* Light gray */
  border-bottom-left-radius: 8px; /* Rounded bottom corners */
  border-bottom-right-radius: 8px;
  display: flex; /* Flexible layout */
  justify-content: space-between; /* Space buttons apart */
}

/* OK button */
.ok-btn {
  background-color: #ffC907; /* Yellow/gold */
  color: #333; /* Dark text */
  padding: 10px 20px; /* Space inside */
  border: none;
  border-radius: 4px; /* Rounded corners */
  cursor: pointer; /* Hand cursor */
  font-weight: bold; /* Bold text */
  width: auto; /* Only as wide as needed */
}

/* Learn More button */
.learn-more-btn {
  background-color: #003366; /* Dark blue */
  color: white; /* White text */
  padding: 10px 20px; /* Space inside */
  border: none;
  border-radius: 4px; /* Rounded corners */
  cursor: pointer; /* Hand cursor */
  width: auto; /* Only as wide as needed */
}

/* === Footer Styling === */
footer {
  background-color: #2E9DF7; /* Blue background */
  color: #FFC907; /* Yellow text */
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  font-size: 0.9em;
}

.footer-content {
  max-width: 900px;
  margin: 0 auto;
}

.footer-content p {
  margin: 5px 0;
}

/* Footer link styling */
footer a {
  color: #FFC907; /* Yellow text for links */
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

footer a:hover {
  color: #FFDD44; /* Lighter yellow on hover */
  text-decoration: underline;
}

footer a:active,
footer a:visited:active {
  color: #FF902A; /* Orange when clicked */
}