.page {
  overflow: hidden;
  margin: 1rem;
}
.instructions {
  font-size: 0.9rem;
}
.error {
  color: red;
  font-size: 12px;
  /* size: 10px; */
}
.highlight-error {
  border: 1px solid red;
}
.text {
  text-align: center;
}
.btn {
  margin: 1%;
}
.submit-btn {
  margin-top: 0.5rem;
}
input[type="number"] {
  width: 55%;
  margin: 1%;
}
.hide {
  display: none;
}
.v-canvas-container {
  width: 100%;
  height: 100%;
  color: black;
  background-color: black;
  border: 2px solid black;
}

.v-datalist-container {
  height: 100%;
  margin: 0;
}

.v-slider-full {
  width: 80%;
}

.input-form {
  display: none;
  color: black;
}

.add {
  font-size: 0.9rem;
}

.left {
  order: 1;
}

.exp {
  order: 2;
}
.flex {
  display: is-flex;
}
.button-div {
  order: 3;
  margin: auto;
  width: auto;
}

.top-border {
  border-top: 1px solid black;
}

.v-datalist-title {
  /* background-color: #2C9AD1; */
  /* background-blend-mode: overlay; */
  /* border-radius: 1rem; */
  border-bottom: 0;
}

.v-collapsible-instruction-container {
  width: 60%;
  margin: auto;
  border-radius: 0.25rem;
}

.v-instruction-container {
  width: 80%;
  margin: 0 auto;
  border: 0.2rem solid #97d23d;
  justify-content: flex-start;
}

.v-collapsible {
  width: 98%;
  margin: auto;
}

.v-collapsible::after {
  size: 1rem;
}

.v-checkbox {
  margin-bottom: 0.1rem;
}

@media screen and (max-width: 800px) {
  .left {
    order: 1;
  }
  .right {
    order: 2;
  }
  .exp {
    order: 3;
  }
  .coord-input {
    width: 80%; /* Makes the input wider on small screens */
    max-width: unset; /* Removes maximum width constraint */
    min-width: 100px; /* Ensures input is still large enough for content */
    font-size: 12px; /* Slightly larger font size for readability */
    margin: 8px auto; /* Slightly smaller margin */
  }
  .vertex-list {
    padding: 10px; /* Add more padding for touch-friendly interactions */
    width: 55%; /* Reduce width slightly to leave room for screen edges */
    max-height: 70vh; /* Reduce max-height for smaller screens */
    margin: 0 auto; /* Center-align the container */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3); /* Slightly lighter shadow for smaller screens */
  }
   #left.apparatus {
    width: 80vw; /* Adjusting width using viewport width */
    height: 80vh; /* Adjusting height using viewport height */
    border-radius: 16px; /* Rounded corners for a modern look */
    overflow-y: auto; /* Scrollbar for overflow content */
    /* Any additional styles can be added here */
  }
  #observations.right {
    width: 80vw; /* Adjusting width using viewport width */
    height: 80vh; /* Adjusting height using viewport height */
    border-radius: 16px; /* Rounded corners for a modern look */
    overflow-y: auto; /* Scrollbar for overflow content */
    /* Any additional styles can be added here */
  }
  
}

.v-button {
  background-color: #04aa6d;
  border-radius: 0.5rem;
  font-size: small;
  /* width: 30%; */
}

.next-btn {
  background-color: #3298dc;
  border-radius: 0.5rem;
}

.previous-btn {
  background-color: #48c774;
  border-radius: 0.5rem;
}

.reset-btn {
  background-color: #f14668;
  border-radius: 0.5rem;
}

/* .observations {
  margin-top: 20px;
  padding: 10px;
  background-color: #fff;
  border: 1px solid #ccc;
  max-height: 200px;
  overflow-y: auto;
}

.observations div {
  margin-bottom: 5px;
} */

@media (min-width: 1024px) {
  #left.apparatus {
    width: 19vw; /* Adjusting width using viewport width */
    height: 80vh; /* Adjusting height using viewport height */
    border-radius: 16px; /* Rounded corners for a modern look */
    overflow-y: auto; /* Scrollbar for overflow content */
    /* Any additional styles can be added here */
  }
  #observations.right {
    width: 19vw; /* Adjusting width using viewport width */
    height: 80vh; /* Adjusting height using viewport height */
    border-radius: 16px; /* Rounded corners for a modern look */
    overflow-y: auto; /* Scrollbar for overflow content */
    /* Any additional styles can be added here */
  }
  .left {
    order: 1;
  }
  .right {
    order: 3;
  }
  .exp {
    order: 2;
  }
}
/* Heading for observations list */
#observations-list-heading {
  font-size: 1.2em;
  font-weight: bold;
  margin-bottom: 15px;
  text-align: center;
  color: #555; /* Dark gray color */
  text-transform: uppercase;
}

/* Styling for observations list container */
#observations-list {
  list-style-type: none;
  padding: 0;
  margin: 0;
  width: 70%;
  border: 1px solid #ccc;
  border-radius: 8px;
  background-color: #f2f2f2; /* Light gray background */
  max-height: 70vh;
  overflow-y: auto;
  padding: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); /* Soft shadow effect */
}

/* Styling for each observation item */
.observation-item {
  margin-bottom: 8px;
  padding: 10px;
  background-color: #fff; /* White background */
  border: 1px solid #ddd;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* Subtle shadow */
  transition: background-color 0.3s ease;
}

/* Hover effect for observation items */
.observation-item:hover {
  background-color: #f5f5f5; /* Lighter gray on hover */
}

#procedure-message {
  display: none;
  position: fixed;
  max-width: 100vw; /* Full width */
  max-height: 90vh; /* Prevent overflow */
  overflow-y: auto; /* Scroll if content exceeds height */
  background: linear-gradient(
    135deg,
    #f0f4f8,
    #d6e1e7
  ); /* Gradient background */
  z-index: 1000;
  padding: 35px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2); /* Deeper shadow for more depth */
  border-radius: 16px; /* Rounded corners for a smoother look */
  text-align: left;
  top: 48%; /* Center vertically */
  left: 50%; /* Center horizontally */
  transform: translate(-50%, -50%);
  animation: fadeIn 0.5s ease-out; /* Fade-in animation */
  border: 2px solid #3498db; /* Border with a light blue color */
}

/* Add a subtle fade-in animation */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Optional: add hover effect */
#procedure-message:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3); /* Stronger shadow on hover */
  transform: translate(-50%, -50%) scale(1.05); /* Slight zoom effect */
}

.v-collapsible-instruction-container {
  width: 65%;
  margin: auto;
  border-radius: 0.5rem;
}

.v-collapsible {
  width: 98%;
  margin: auto;
}

.v-collapsible::after {
  size: 1rem;
}

.instr-font {
  font-size: 1rem;
  color: #000;
}

/* Styling for the message div */
/* Styling for the message div */
#message-div {
  padding: 15px;
  margin: 10px;
  background-color: #f5f5f5; /* Lighter background */
  border: 1px solid #ddd;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); /* Soft shadow */
  max-height: 300px;
  overflow-y: auto;
}

/* Styling for each message item */
.message-item {
  margin-bottom: 15px;
  padding: 12px;
  background-color: #ffffff; /* White background */
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
  line-height: 1.6;
  transition: background-color 0.3s ease; /* Smooth hover transition */
}

/* Hover effect for message items */
.message-item:hover {
  background-color: #f9f9f9; /* Light gray on hover */
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); /* Slightly stronger shadow */
}

/* Styling for the heading inside message div */
.message-heading {
  font-size: 24px; /* Larger heading */
  font-weight: bold;
  color: #555; /* Slightly darker gray */
  text-align: center;
  margin-bottom: 20px;
  text-transform: uppercase;
}

/* Example style for additional information text */
.message-info {
  font-size: 14px;
  color: black; /* Light gray for additional info */
  margin-top: 10px;
}

.container {
  display: flex;
  gap: 20px;
  padding: 20px;
}

.canvas-container {
  flex: 1;
  position: relative;
}

.info-panel {
  flex: 1;
  padding: 24px;
  max-width: 400px;
  background: linear-gradient(145deg, #7e7070, #533939);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 2px 8px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(4px);
  transition: all 0.3s ease;
}

.info-panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4),
    inset 0 2px 8px rgba(255, 255, 255, 0.05);
}

.intersection-points {
  font-size: 1em;
  margin-top: 20px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #2c3e50, #34495e);
  color: #ecf0f1;
  border: 1px solid #2c3e50;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  max-width: 600px;
  line-height: 1.6;
  font-family: "Arial", sans-serif;
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.intersection-points:hover {
  background: linear-gradient(135deg, #34495e, #2c3e50);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.intersection-entry {
  padding: 8px 12px;
  margin: 4px 0;
  background: #3b3f46;
  color: #ffffff;
  border-radius: 6px;
  font-family: "Courier New", monospace;
  font-size: 0.9em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.intersection-entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  background: #4c4f56;
}

.intersection-entry span {
  color: #bdc3c7;
}

.intersection-entry .highlight {
  color: #f1c40f;
  font-weight: bold;
}

.vertex-list {
  /* margin: 10px auto; Center align with auto margins */
  padding: 7px;
  width: 100%; /* Make it adapt to smaller screens */
  background: #312f2f;
  border: 1px solid #252121;
  border-radius: 8px;
  max-height: 80vh;
  overflow-y: auto; /* Allow scrolling when content overflows */
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2); /* Add subtle shadow for better visibility */
}



.vertex-heading {
  font-family: "Arial", sans-serif;
  font-size: 16px;
  color: #e0d8d8;
  background: linear-gradient(to right, #493ee4, #366770);
  text-align: center;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  margin: 20px auto;
}

canvas {
  border: 1px solid #333;
  background-color: rgb(56, 52, 52);
}

.controls {
  margin-top: -10px;
}

button {
  margin: 5px;
  padding: 8px 15px;
  border-radius: 4px;
  border: 1px solid #333;
  background: #222;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background: #333;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#coordinates {
  font-family: monospace;
  font-size: large;
}

.grid-label {
  position: absolute;
  font-size: 10px;
  color: #999;
  font-family: monospace;
  pointer-events: none;
}

.vertex-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  margin: 8px 0;
  background: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}

.vertex-entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  background: #f7f7f7;
}

.vertex-marker {
  width: 10vw; /* Set width relative to the viewport width */
  height: 10vw; /* Maintain the aspect ratio as a circle */
  max-width: 40px; /* Restrict maximum size for larger screens */
  max-height: 40px; /* Restrict maximum height */
  border-radius: 50%;
  background: linear-gradient(135deg, #ff7eb3, #ff758c);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em; /* Base font size */
  font-weight: bold;
  color: #fff;
  box-shadow: 0 2px 6px rgba(255, 117, 140, 0.3);
  transition: transform 0.3s ease;
}
.vertex-entry:hover .vertex-marker {
  transform: scale(1.1);
}

.vertex-number {
  display: inline-block;
  padding: 5px 10px;
  background: linear-gradient(135deg, #6a5acd, #87cefa);
  color: white;
  font-weight: bold;
  font-family: 'Arial', sans-serif;
  font-size: 12px;
  border-radius: 12px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s, background-color 0.2s;
  cursor: pointer;
}

.vertex-number:hover {
  background: linear-gradient(135deg, #483d8b, #4682b4);
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.vertex-data {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.vertex-label {
  font-size: 0.7em;
  font-weight: 600;
  text-transform: uppercase;
  color: #777;
}

.coordinate-box {
  display: flex;
  gap: 8px;
  font-size: 0.85em;
  color: #333;
}

.coord {
  background: #f9fafb;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #dce0e5;
  font-family: "Courier New", monospace;
  font-weight: 500;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.coord:hover {
  background-color: #eef4ff;
  border-color: #007bff;
}

/* Alternate color themes */
.vertex-entry.theme-green .vertex-marker {
  background: linear-gradient(135deg, #66d37e, #41b65a);
}

.vertex-entry.theme-red .vertex-marker {
  background: linear-gradient(135deg, #ff6b6b, #e63946);
}

.vertex-entry.theme-blue .vertex-marker {
  background: linear-gradient(135deg, #56ccf2, #2f80ed);
}

#explanation {
  background: #f9f9fc;
  color: #333;
  font-family: "Roboto", sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  padding: 12px 20px;
  margin: 16px 0;
  border: 1px solid #e0e0e5;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

#explanation:hover {
  background-color: #f1f6ff;
  border-color: #b3d4fc;
}

#explanation::before {
  content: "💡 ";
  font-size: 1.2rem;
  color: #007bff;
  margin-right: 8px;
  font-weight: bold;
}

#explanation strong {
  font-weight: 600;
  color: #007bff;
}

#explanation a {
  color: #007bff;
  text-decoration: underline;
  transition: color 0.2s ease;
}

#explanation a:hover {
  color: #0056b3;
}

button {
  font-family: "Poppins", sans-serif;
  font-size: 1em;
  font-weight: 500;
  color: #ffffff;
  padding: 12px 20px;
  margin: 8px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2),
    inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  /* Vibrant blue gradient */
}

button:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  /* Reverse gradient on hover */
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3),
    inset 0 0 10px rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

button:active {
  transform: translateY(1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25), inset 0 0 8px rgba(0, 0, 0, 0.15);
}

button:disabled {
  background: linear-gradient(135deg, #2a2d31, #1a1c20);
  /* Muted dark gradient */
  color: #5c5f63;
  /* Soft gray text for reduced emphasis */
  cursor: not-allowed;
  opacity: 0.7;
  /* Slight transparency for a disabled look */
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
  /* Subtle inset shadow for depth */
  border: 1px solid #3a3d42;
  /* Subtle border to define the button */
  filter: grayscale(50%);
  /* Grayscale effect for visual clarity */
  transform: none;
  /* No movement or interactivity */
}

#startFillBtn {
  background: linear-gradient(135deg, #16a34a, #15803d);
  /* Green gradient */
}

#startFillBtn:hover:enabled {
  background: linear-gradient(135deg, #15803d, #16a34a);
  /* Reverse green gradient */
}

#nextStepBtn {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  /* Orange gradient */
}

#nextStepBtn:hover:enabled {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  /* Reverse orange gradient */
}

#clearBtn {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  /* Red gradient */
}

#clearBtn:hover:enabled {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  /* Reverse red gradient */
}

.controls {
  display: flex;
  justify-content: center;
  /* Horizontally center the buttons */
  align-items: center;
  /* Vertically center the buttons */
  gap: 20px;
  /* Space between buttons */
  padding: 20px;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1000;
}

.modal-content {
  position: relative;
  background: linear-gradient(145deg, #2a2d3a, #1a1d2a);
  margin: 15% auto;
  padding: 20px;
  width: 70%;
  max-width: 600px;
  border-radius: 12px;
  color: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.question-container {
  margin: 20px 0;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0;
}

.option-button {
  padding: 12px 20px;
  border: 2px solid #4a5568;
  border-radius: 8px;
  background: linear-gradient(145deg, #2d3748, #1a202c);
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.option-button:hover {
  background: linear-gradient(145deg, #3a4758, #2d3748);
  transform: translateY(-2px);
}

.option-button.correct {
  background: linear-gradient(145deg, #48bb78, #38a169);
  border-color: #48bb78;
}

.option-button.incorrect {
  background: linear-gradient(145deg, #f56565, #e53e3e);
  border-color: #f56565;
}

.feedback {
  margin-top: 15px;
  padding: 10px;
  border-radius: 8px;
  display: none;
}

.feedback.correct {
  background: rgba(72, 187, 120, 0.2);
  color: #48bb78;
}

.feedback.incorrect {
  background: rgba(245, 101, 101, 0.2);
  color: #f56565;
}


.coord-value {
  display: inline-block;
  min-width: 45px;
  padding: 2px 4px;
  font-family: monospace;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.coord-value:hover {
  background: rgba(4, 8, 235, 0.1);
}

.coord-input {
  width: 100%; /* Adjusts width to fit within the container */
  max-width: 300px; /* Limits maximum width on larger screens */
  min-width: 70px; /* Ensures enough space for visibility */
  background: rgba(39, 13, 182, 0.1);
  border: 1px solid rgba(16, 19, 180, 0.2);
  border-radius: 4px;
  color: black;
  padding: 5px 10px; /* Larger padding for better readability */
  font-family: monospace;
  font-size: 16px; /* Increased font size */
  text-align: center;
  margin: 10px auto; /* Centers the input on smaller screens */
  box-sizing: border-box; /* Includes padding in width calculations */
}

.coord-input:focus {
  outline: none;
  border-color: rgba(31, 21, 180, 0.5);
  background: rgba(23, 5, 187, 0.2);
}

.coord-input::-webkit-inner-spin-button,
.coord-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}