/* Google Fonts */
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap");

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

/* Container */
.container {
  max-width: 700px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

/* Header */
.header {
  background: #fff;
  padding: 40px 30px 30px;
  text-align: center;
}

.main-title {
  font-size: 2.2em;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 300;
  letter-spacing: -1px;
}

.subtitle {
  color: #7f8c8d;
  font-size: 1.1em;
  font-weight: 300;
}

/* Content */
.content {
  padding: 20px 30px 40px;
}

/* Practice Grid */
.practice-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

.practice-card {
  background: #fff;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid #f0f0f0;
}

.practice-card h3 {
  color: #2c3e50;
  margin-bottom: 15px;
  font-size: 1.3em;
  font-weight: 400;
}

.practice-card p {
  color: #7f8c8d;
  line-height: 1.6;
  margin-bottom: 20px;
  font-size: 0.95em;
}

.practice-link {
  display: inline-block;
  padding: 12px 24px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 500;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.practice-link:hover {
  background: linear-gradient(135deg, #5a6fd8, #6a4a9b);
}

/* Info Section */
.info-section {
  background: #f8f9fa;
  border-radius: 15px;
  padding: 25px;
  margin-top: 30px;
}

.info-section h3 {
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 400;
}

.info-section ul {
  list-style: none;
}

.info-section li {
  color: #6c757d;
  margin-bottom: 8px;
  padding-left: 20px;
  position: relative;
  font-size: 0.9em;
}

.info-section li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #667eea;
  font-weight: bold;
}

/* Note */
.note {
  background: linear-gradient(135deg, #fff3cd, #ffeaa7);
  border-radius: 15px;
  padding: 20px;
  margin-top: 25px;
  border-left: 4px solid #ffc107;
  font-size: 0.9em;
  color: #856404;
}

/* Navigation */
.nav {
  text-align: center;
  margin-top: 20px;
}

.nav a {
  display: inline-block;
  padding: 8px 16px;
  background: #6c757d;
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.9em;
}

.nav a:hover {
  background: #5a6268;
}

/* Story List */
.story-list {
  display: grid;
  gap: 30px;
}

.story-card {
  background: #fff;
  border-radius: 15px;
  padding: 25px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid #f0f0f0;
}

.story-title {
  font-size: 1.3em;
  color: #2c3e50;
  margin-bottom: 10px;
  font-weight: 500;
}

.story-meta {
  color: #7f8c8d;
  font-size: 0.9em;
  margin-bottom: 15px;
}

.story-summary {
  color: #555;
  line-height: 1.6;
  margin-bottom: 20px;
}

.tags {
  margin-top: 15px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  background: #f1f3f4;
  color: #5f6368;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 0.8em;
}

/* Individual Story Page */
.story-date {
  color: #95a5a6;
  font-size: 0.9em;
  margin-bottom: 10px;
}

.story-content {
  background: #fff;
  border-radius: 15px;
  padding: 30px;
  line-height: 1.8;
  color: #444;
  font-size: 1.1em;
  margin-bottom: 20px;
}

.story-content p {
  margin-bottom: 20px;
}

.story-footer {
  margin-top: 30px;
}

.author-info {
  background: #f8f9fa;
  border-radius: 15px;
  padding: 20px;
  text-align: center;
  font-size: 0.9em;
  color: #6c757d;
  margin-bottom: 20px;
}

/* Code Blocks */
pre {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0;
  overflow-x: auto;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.75em;
  line-height: 1.5;
  color: #2c3e50;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

pre code {
  background: transparent;
  border: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: inherit;
  white-space: pre;
  display: block;
}

code {
  background: #f1f3f4;
  color: #d73a49;
  padding: 2px 6px;
  border-radius: 6px;
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.85em;
  border: 1px solid #e1e4e8;
}

/* Code syntax highlighting (optional) */
pre code .comment {
  color: #6a737d;
  font-style: italic;
}

pre code .keyword {
  color: #d73a49;
  font-weight: bold;
}

pre code .string {
  color: #032f62;
}

pre code .number {
  color: #005cc5;
}

/* Controls */
.controls {
  background: #f8f9fa;
  padding: 20px;
  margin: 20px 0;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px; /* 20px から 10px に変更 */
  align-items: center;
  justify-content: center;
}

.sort-section,
.filter-section {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto; /* flex: 1 から変更して幅を内容に合わせる */
  justify-content: center;
}

.search-section {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-basis: 100%;
  justify-content: center;
  order: 1; /* 最後に配置 */
  margin-top: 10px; /* 上段との間隔を追加 */
}

.controls label {
  font-weight: bold;
  color: #333;
}

.controls select,
.controls input {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.controls input[type="text"] {
  min-width: 200px;
}

@media (max-width: 768px) {
  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .sort-section,
  .filter-section,
  .search-section {
    justify-content: center;
    flex-basis: auto;
    order: initial;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .container {
    border-radius: 15px;
  }

  .header {
    padding: 30px 20px 20px;
  }

  .main-title {
    font-size: 1.8em;
  }

  .subtitle {
    font-size: 1em;
  }

  .content {
    padding: 15px 20px 30px;
  }

  .practice-card {
    padding: 20px;
  }

  .practice-card h3 {
    font-size: 1.2em;
  }

  .practice-card p {
    font-size: 0.9em;
  }

  .practice-link {
    padding: 10px 20px;
    font-size: 0.9em;
  }

  .info-section {
    padding: 20px;
  }

  .info-section li {
    font-size: 0.85em;
  }

  .note {
    padding: 15px;
    font-size: 0.85em;
  }

  .story-card {
    padding: 20px;
  }

  .story-title {
    font-size: 1.2em;
  }

  .story-meta {
    font-size: 0.85em;
  }

  .story-summary {
    font-size: 0.9em;
  }

  .tag {
    font-size: 0.75em;
    padding: 3px 6px;
  }

  .story-content {
    padding: 20px;
    font-size: 1em;
  }

  .story-date {
    font-size: 0.85em;
  }

  .author-info {
    padding: 15px;
    font-size: 0.85em;
  }

  pre {
    padding: 15px;
    font-size: 0.85em;
    margin: 15px 0;
    border-radius: 8px;
  }

  code {
    font-size: 0.8em;
    padding: 1px 4px;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 1.6em;
  }

  .practice-card {
    padding: 15px;
  }

  .practice-card h3 {
    font-size: 1.1em;
    margin-bottom: 10px;
  }

  .practice-link {
    padding: 8px 16px;
    font-size: 0.85em;
  }

  .story-card {
    padding: 15px;
  }

  .story-title {
    font-size: 1.1em;
  }

  .nav a {
    padding: 6px 12px;
    font-size: 0.85em;
  }

  .story-content {
    padding: 15px;
    font-size: 0.95em;
  }

  pre {
    padding: 12px;
    font-size: 0.8em;
    margin: 12px 0;
  }

  code {
    font-size: 0.75em;
  }
}