/* Reset and base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 1rem;
  line-height: 1.6;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
}

/* Container for main content */
.container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(10px);
}

/* Typography */
h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: #2d3748;
  text-align: center;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: #4a5568;
  margin-bottom: 1rem;
  font-weight: 600;
}

h3 {
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  color: #4a5568;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

h4 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  color: #4a5568;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

p {
  font-size: clamp(1.1rem, 2.5vw, 1.25rem);
  margin-bottom: 1rem;
  line-height: 1.7;
}

/* Question styling */
.question {
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-radius: 12px;
  border-left: 5px solid #667eea;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.question:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  border-left-color: #764ba2;
}

.question label:first-child {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 500;
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  line-height: 1.6;
}

/* Radio button groups */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
  justify-content: space-between;
}

.radio-group label {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 55px;
  height: 55px;
  min-width: 55px;
  min-height: 55px;
  max-width: 55px;
  max-height: 55px;
  font-weight: 600;
  font-size: 1.2rem;
  flex: 1;
  position: relative;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.radio-group label:hover {
  border-color: #667eea;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.radio-group input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-group input[type="radio"]:checked + span {
  color: white;
}

.radio-group label:has(input[type="radio"]:checked) {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-color: #667eea;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(102, 126, 234, 0.3);
}

/* Fallback for browsers that don't support :has() */
.radio-group input[type="radio"]:checked + span {
  color: white;
}

.radio-group label.checked {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-color: #667eea;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(102, 126, 234, 0.3);
}

/* Button styling */
button {
  width: 100%;
  max-width: 300px;
  margin: 2rem auto 0;
  padding: 1rem 2rem;
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  font-weight: 600;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  min-height: 48px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

button:hover {
  background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

button:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* Results section */
.result {
  margin-top: 2rem;
  padding: 2rem;
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  border-radius: 15px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.score-line {
  margin: 1rem 0;
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  padding: 1rem;
  background: white;
  border-radius: 10px;
  border-left: 5px solid #48bb78;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  font-weight: 500;
}

.score-line:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Chart container */
.chart-container {
  width: 100%;
  max-width: 500px;
  margin: 2rem auto;
  background: white;
  border-radius: 15px;
  border: 2px solid #e2e8f0;
  padding: 2rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  aspect-ratio: 1;
  position: relative;
  overflow: hidden;
}

.chart-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block !important;
}

/* Interpretation section styling */
#interpretation {
  font-size: clamp(1.1rem, 2.5vw, 1.25rem) !important;
  line-height: 1.7 !important;
}

#interpretation p {
  font-size: clamp(1.1rem, 2.5vw, 1.25rem) !important;
}

#interpretation li {
  font-size: clamp(1.05rem, 2.3vw, 1.2rem) !important;
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

/* Scoring scale styling */
.scoring-scale {
  margin: 2rem auto;
  padding: 1.5rem;
  background: white;
  border-radius: 15px;
  border: 2px solid #e2e8f0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  max-width: 600px;
}

.scoring-scale h3 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: #2d3748;
}

.scale-container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 1rem;
}

.scale-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 10px;
  background: #f7fafc;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
}

.scale-item:hover {
  transform: translateY(-2px);
}

.scale-color {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  flex-shrink: 0;
}

.scale-color.high {
  background: #48bb78; /* Green for high range */
}

.scale-color.moderate {
  background: #ecc94b; /* Yellow for moderate range */
}

.scale-color.low {
  background: #f56565; /* Red for low range */
}

.scale-item p {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.1rem);
}

/* Media Queries for Responsive Design */

/* Mobile devices (up to 480px) */
@media screen and (max-width: 480px) {
  body {
    padding: 0.5rem;
  }

  .container {
    padding: 1rem;
    margin: 0;
    border-radius: 0;
  }

  .question {
    padding: 0.75rem;
    margin-bottom: 1rem;
  }

  .radio-group {
    gap: 0.5rem;
  }

  .radio-group label {
    padding: 0.4rem;
    font-size: 0.9rem;
    min-width: 40px;
    min-height: 40px;
  }

  .chart-container {
    padding: 1rem;
    margin: 1.5rem auto;
  }

  #interpretation {
    padding: 1rem !important;
    margin-top: 1.5rem !important;
  }

  #interpretation ul {
    padding-left: 1rem;
  }

  #interpretation li {
    margin-bottom: 0.5rem;
    font-size: 1rem;
  }

  .scoring-scale {
    padding: 1rem;
    margin: 1.5rem auto;
  }

  .scale-container {
    flex-direction: column;
    align-items: center;
  }

  .scale-item {
    width: 100%;
    max-width: 280px;
  }
}

/* Tablet devices (481px to 768px) */
@media screen and (min-width: 481px) and (max-width: 768px) {
  .container {
    padding: 1.5rem;
  }

  .radio-group {
    gap: 0.6rem;
  }

  .radio-group label {
    min-width: 42px;
    min-height: 42px;
  }

  .chart-container {
    max-width: 450px;
  }

  .scoring-scale {
    max-width: 500px;
  }
}

/* Large tablets and small desktops (769px to 1024px) */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .container {
    max-width: 750px;
  }

  .radio-group {
    gap: 0.8rem;
  }
}

/* Large screens (1025px and up) */
@media screen and (min-width: 1025px) {
  .container {
    max-width: 900px;
    padding: 2.5rem;
  }

  .radio-group {
    gap: 1rem;
  }

  .chart-container {
    max-width: 550px;
  }

  .scoring-scale {
    max-width: 600px;
  }
}

/* High DPI displays */
@media screen and (-webkit-min-device-pixel-ratio: 2),
       screen and (min-resolution: 192dpi) {
  .chart-container {
    border-width: 1px;
  }

  .question {
    border-left-width: 3px;
  }
}

/* Landscape orientation on mobile */
@media screen and (max-width: 768px) and (orientation: landscape) {
  .radio-group {
    flex-direction: row;
    justify-content: space-around;
  }

  .chart-container {
    max-width: 400px;
    aspect-ratio: 1.2;
  }
}

/* Print styles */
@media print {
  body {
    background: white;
    color: black;
  }

  .container {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .chart-container {
    break-inside: avoid;
  }

  button {
    display: none;
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  button:hover {
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .question {
    border-left-width: 6px;
  }

  .radio-group label {
    border-width: 3px;
  }

  .chart-container {
    border-width: 3px;
  }
}