/* 文法説明ページ専用CSS */

/* Page Header */
.page-header {
  background: var(--gradient);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.breadcrumb {
  margin-bottom: 20px;
  font-size: 1rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  margin: 0 10px;
  opacity: 0.7;
}

.page-header h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  font-weight: 700;
}

.page-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Intro Section */
.intro-section {
  padding: 60px 0;
  text-align: center;
}

.intro-section h2 {
  font-size: 2.2rem;
  margin-bottom: 30px;
  color: var(--primary-color);
}

.intro-content {
  max-width: 800px;
  margin: 0 auto;
}

.intro-content p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 30px;
  color: #555;
}

.highlight-box {
  background: var(--light-gray);
  padding: 30px;
  border-radius: 10px;
  border-left: 4px solid var(--primary-color);
  text-align: left;
}

.highlight-box h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.3rem;
}

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

.highlight-box li {
  padding: 8px 0;
  position: relative;
  padding-left: 25px;
}

.highlight-box li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

/* Slots Section */
.slots-section {
  padding: 80px 0;
  background: var(--light-gray);
}

.slots-section h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: var(--text-color);
}

.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.slot-card {
  background: white;
  border-radius: 10px;
  padding: 25px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.slot-card:hover {
  transform: translateY(-3px);
}

.slot-label {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  color: white;
  margin-bottom: 15px;
}

.slot-s .slot-label { background: #FF6B6B; }
.slot-v .slot-label { background: #4ECDC4; }
.slot-o .slot-label { background: #45B7D1; }
.slot-c .slot-label { background: #96CEB4; }
.slot-m .slot-label { background: #FFEAA7; color: #333; }
.slot-aux .slot-label { background: #DDA0DD; }

.slot-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.slot-card p {
  color: #666;
  line-height: 1.6;
  margin-bottom: 15px;
}

.example {
  padding: 15px;
  background: #f9f9f9;
  border-radius: 5px;
  border-left: 3px solid var(--primary-color);
}

.example strong {
  color: var(--primary-color);
}

/* Slot Highlights */
.slot-highlight-s { background: #FF6B6B; color: white; padding: 2px 6px; border-radius: 3px; }
.slot-highlight-v { background: #4ECDC4; color: white; padding: 2px 6px; border-radius: 3px; }
.slot-highlight-o { background: #45B7D1; color: white; padding: 2px 6px; border-radius: 3px; }
.slot-highlight-c { background: #96CEB4; color: white; padding: 2px 6px; border-radius: 3px; }
.slot-highlight-m { background: #FFEAA7; color: #333; padding: 2px 6px; border-radius: 3px; }
.slot-highlight-aux { background: #DDA0DD; color: white; padding: 2px 6px; border-radius: 3px; }

/* Example Section */
.example-section {
  padding: 80px 0;
}

.example-section h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: var(--text-color);
}

.example-container {
  max-width: 900px;
  margin: 0 auto;
}

.example-container h3 {
  font-size: 1.5rem;
  margin-bottom: 30px;
  color: var(--primary-color);
  text-align: center;
}

.sentence-analysis {
  background: white;
  padding: 40px;
  border-radius: 15px;
  box-shadow: var(--shadow);
  border: 2px solid var(--border-color);
}

.original-sentence {
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 30px;
  padding: 20px;
  background: #f9f9f9;
  border-radius: 8px;
  font-style: italic;
}

.analyzed-sentence {
  font-size: 1.4rem;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.8;
  padding: 20px;
  background: #fff;
  border: 2px solid var(--primary-color);
  border-radius: 8px;
}

.analysis-breakdown {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
}

.breakdown-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: #f9f9f9;
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
}

.slot-label-small {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9rem;
  color: white;
  flex-shrink: 0;
}

.breakdown-item span:nth-child(2) {
  font-weight: bold;
  min-width: 120px;
}

.breakdown-item .description {
  color: #666;
  font-style: italic;
}

/* Features Detail Section */
.features-detail-section {
  padding: 80px 0;
  background: var(--light-gray);
}

.features-detail-section h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 50px;
  color: var(--text-color);
}

.features-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-detail-card {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  text-align: center;
}

.feature-detail-card .feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.feature-detail-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.feature-detail-card p {
  color: #666;
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  text-align: center;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--text-color);
}

.cta-content p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #666;
}

.btn-large {
  padding: 15px 40px;
  font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .page-header h1 {
    font-size: 2rem;
  }
  
  .slots-grid {
    grid-template-columns: 1fr;
  }
  
  .features-detail-grid {
    grid-template-columns: 1fr;
  }
  
  .sentence-analysis {
    padding: 25px;
  }
  
  .analyzed-sentence {
    font-size: 1.2rem;
  }
  
  .breakdown-item {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
  
  .breakdown-item span:nth-child(2) {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .page-header {
    padding: 40px 0;
  }
  
  .intro-section,
  .slots-section,
  .example-section,
  .features-detail-section,
  .cta-section {
    padding: 40px 0;
  }
  
  .sentence-analysis {
    padding: 20px;
  }
}