* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
}

header {
  text-align: center;
  color: white;
  margin-bottom: 30px;
}

header h1 {
  font-size: clamp(28px, 5vw, 42px);
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
  font-size: clamp(14px, 2vw, 18px);
  opacity: 0.95;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.card h2 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: clamp(20px, 3vw, 26px);
  border-bottom: 2px solid #f0f0f0;
  padding-bottom: 10px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 6px;
  color: #555;
  font-size: 14px;
}

.form-group input,
.form-group select {
  padding: 10px 14px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 15px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
}

.form-group small {
  color: #888;
  font-size: 12px;
  margin-top: 4px;
}

.hint {
  background: #f8f9ff;
  padding: 12px 16px;
  border-radius: 8px;
  color: #667eea;
  font-size: 14px;
  margin-bottom: 16px;
  border-left: 4px solid #667eea;
}

.competitors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}

.competitor-card {
  background: #f8f9ff;
  padding: 16px;
  border-radius: 12px;
  border: 2px solid #e8eaff;
}

.competitor-card h3 {
  color: #764ba2;
  margin-bottom: 12px;
  font-size: 16px;
}

/* Results Section */
.results {
  background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.result-box {
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  text-align: center;
}

.result-label {
  font-size: 13px;
  color: #666;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-value {
  font-size: 24px;
  font-weight: 700;
  color: #333;
}

.result-value.highlight {
  color: #667eea;
  font-size: 32px;
}

.result-value.large {
  font-size: 28px;
  color: #764ba2;
}

/* Comparison Bars */
.comparison-section {
  margin-top: 24px;
}

.comparison-section h3 {
  color: #555;
  margin-bottom: 16px;
  font-size: 18px;
}

.comparison-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.comp-bar-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.comp-bar-label {
  width: 140px;
  font-weight: 600;
  font-size: 14px;
  color: #555;
}

.comp-bar-track {
  flex: 1;
  height: 28px;
  background: #e8eaff;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}

.comp-bar-fill {
  height: 100%;
  border-radius: 6px;
  display: flex;
  align-items: center;
  padding-left: 10px;
  color: white;
  font-weight: 600;
  font-size: 13px;
  transition: width 0.5s ease;
  white-space: nowrap;
}

.comp-bar-fill.ours {
  background: linear-gradient(90deg, #667eea, #764ba2);
}

.comp-bar-fill.comp1 {
  background: #f39c12;
}

.comp-bar-fill.comp2 {
  background: #e74c3c;
}

.comp-bar-fill.comp3 {
  background: #3498db;
}

.comp-bar-fill.comp4 {
  background: #27ae60;
}

.comp-bar-value {
  width: 100px;
  text-align: right;
  font-weight: 700;
  font-size: 14px;
  color: #333;
}

/* Recommendations */
.recommendations {
  margin-top: 24px;
  padding: 20px;
  background: #f0fff4;
  border-radius: 12px;
  border: 2px solid #48bb78;
}

.recommendations h3 {
  color: #2f855a;
  margin-bottom: 12px;
  font-size: 18px;
}

.recommendations ul {
  list-style: none;
  padding-left: 0;
}

.recommendations li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: #2f855a;
  font-size: 15px;
}

.recommendations li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #48bb78;
  font-weight: 700;
}

/* Buttons */
.calculate-btn,
.export-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 1000;
}

.calculate-btn:hover,
.export-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.5);
}

.export-btn {
  right: 220px;
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  box-shadow: 0 8px 24px rgba(72, 187, 120, 0.4);
}

.export-btn:hover {
  box-shadow: 0 12px 32px rgba(72, 187, 120, 0.5);
}

/* Responsive */
@media (max-width: 768px) {
  .calculate-btn,
  .export-btn {
    position: static;
    display: block;
    width: 100%;
    margin-top: 10px;
  }
  
  .export-btn {
    right: auto;
  }
  
  .comp-bar-item {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .comp-bar-label {
    width: auto;
    margin-bottom: 4px;
  }
  
  .comp-bar-value {
    width: auto;
    text-align: left;
    margin-top: 4px;
  }
}