/* 今日もAIは間違えた - 幾何学デザイン / 明るい背景 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700;900&display=swap');

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: #f5f5f0;
  color: #2a2a2a;
  line-height: 2;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 幾何学パターン背景 ===== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    linear-gradient(30deg, rgba(0,102,204,0.03) 12%, transparent 12.5%, transparent 87%, rgba(0,102,204,0.03) 87.5%),
    linear-gradient(150deg, rgba(204,51,0,0.03) 12%, transparent 12.5%, transparent 87%, rgba(204,51,0,0.03) 87.5%),
    linear-gradient(60deg, rgba(0,102,204,0.02) 25%, transparent 25.5%, transparent 75%, rgba(0,102,204,0.02) 75%),
    linear-gradient(120deg, rgba(204,51,0,0.02) 25%, transparent 25.5%, transparent 75%, rgba(204,51,0,0.02) 75%);
  background-size: 80px 140px;
  pointer-events: none;
  z-index: 0;
}

.container { position: relative; z-index: 1; }

/* ===== パンくず ===== */
.breadcrumb {
  padding: 20px 0 12px;
  font-size: 13px;
  color: #999;
}
.breadcrumb a { color: #888; text-decoration: none; }
.breadcrumb a:hover { color: #0066cc; }
.breadcrumb span { margin: 0 6px; }

/* ===== ヘッダー ===== */
.site-header {
  text-align: center;
  padding: 48px 0 40px;
  position: relative;
}
.site-header::before {
  content: '';
  position: absolute;
  top: 20px; left: 50%; transform: translateX(-50%);
  width: 200px; height: 200px;
  border: 2px solid rgba(0,102,204,0.08);
  border-radius: 50%;
  z-index: -1;
}
.site-header::after {
  content: '';
  position: absolute;
  top: 40px; left: 50%; transform: translateX(-50%) rotate(45deg);
  width: 160px; height: 160px;
  border: 2px solid rgba(204,51,0,0.06);
  z-index: -1;
}
.series-label {
  display: inline-block;
  background: linear-gradient(135deg, #0066cc, #0088ff);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.site-header h1 {
  font-size: 28px;
  font-weight: 900;
  color: #1a1a1a;
  line-height: 1.5;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.site-header .date {
  font-size: 15px;
  color: #aaa;
  font-weight: 400;
}

/* ===== Layer 1: AIの報告 ===== */
.layer1 {
  margin: 36px 0;
  background: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 20px rgba(0,102,204,0.06);
  position: relative;
}
.layer1::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 120px; height: 120px;
  border: 3px solid rgba(0,102,204,0.06);
  border-radius: 50%;
  pointer-events: none;
}
.layer1::after {
  content: '';
  position: absolute;
  bottom: -20px; left: -20px;
  width: 80px; height: 80px;
  background: rgba(0,102,204,0.03);
  transform: rotate(45deg);
  pointer-events: none;
}
.layer1-header {
  background: linear-gradient(135deg, #e8f0fe, #dce8f8);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px solid #c8d8ec;
}
.layer1-header .icon { width: 28px; height: 28px; image-rendering: pixelated; }
.layer1-header .label {
  font-size: 15px;
  font-weight: 700;
  color: #0055aa;
  letter-spacing: 1px;
}
.layer1-body { padding: 28px 28px; }
.layer1-body .topic {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid #eee;
}
.layer1-body .topic:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.layer1-body .topic h3 {
  font-size: 20px;
  font-weight: 900;
  color: #0055aa;
  margin-bottom: 14px;
  line-height: 1.5;
  padding-left: 16px;
  border-left: 4px solid #0066cc;
}
.layer1-body .topic p {
  font-size: 16px;
  color: #3a3a3a;
  line-height: 2;
}
.layer1-closing {
  padding: 14px 28px;
  background: #f0f5fc;
  border-top: 1px solid #dce8f8;
  font-size: 14px;
  color: #6688aa;
  font-style: italic;
  text-align: right;
}

/* ===== Layer 2: 実際のところ ===== */
.layer2 {
  margin: 48px 0 36px;
  background: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 20px rgba(204,51,0,0.06);
  position: relative;
}
.layer2::before {
  content: '';
  position: absolute;
  top: -20px; right: -20px;
  width: 100px; height: 100px;
  border: 3px solid rgba(204,51,0,0.06);
  transform: rotate(30deg);
  pointer-events: none;
}
.layer2-header {
  background: linear-gradient(135deg, #fef0e8, #fce8dc);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px solid #ecd0c0;
}
.layer2-header .icon { width: 28px; height: 28px; image-rendering: pixelated; }
.layer2-header .label {
  font-size: 15px;
  font-weight: 700;
  color: #aa4400;
  letter-spacing: 1px;
}
.layer2-body { padding: 28px 28px; }
.layer2-body .check {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid #f0e8e0;
}
.layer2-body .check:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.layer2-body .check h3 {
  font-size: 18px;
  font-weight: 700;
  color: #4a3a2a;
  margin-bottom: 10px;
  line-height: 1.5;
}

/* 判定バッジ */
.verdict {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.verdict-correct { background: #e6f4e6; color: #2d8a2d; border: 1px solid #b8dab8; }
.verdict-partially_correct { background: #fff8e0; color: #9a7b00; border: 1px solid #e8d888; }
.verdict-incorrect { background: #fde8e8; color: #cc3333; border: 1px solid #f0b8b8; }
.verdict-unverifiable { background: #f0f0f0; color: #777; border: 1px solid #ddd; }

.layer2-body .check .summary {
  font-size: 17px;
  font-weight: 700;
  color: #3a2a1a;
  margin-bottom: 12px;
  line-height: 1.6;
}
.layer2-body .check .details {
  font-size: 15px;
  color: #5a4a3a;
  line-height: 2;
  margin-bottom: 14px;
}
.layer2-body .check .actual {
  background: linear-gradient(135deg, #fff8f0, #fef5ee);
  border-left: 4px solid #dd6600;
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  font-size: 14px;
  color: #5a3a1a;
  line-height: 1.9;
}
.layer2-body .check .actual strong { color: #cc4400; }
.layer2-overall {
  padding: 18px 28px;
  background: #fdf5ee;
  border-top: 1px solid #ecd0c0;
  font-size: 15px;
  color: #885522;
  line-height: 1.9;
}

/* ===== クロージング ===== */
.closing-line {
  text-align: center;
  padding: 48px 0 24px;
  font-size: 16px;
  color: #aaa;
  font-style: italic;
  position: relative;
}
.closing-line::before {
  content: '';
  display: block;
  width: 60px; height: 2px;
  background: linear-gradient(90deg, #0066cc, #cc4400);
  margin: 0 auto 28px;
  border-radius: 2px;
}

/* ===== SNSボタン ===== */
.sns-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  padding: 20px 0;
}
.sns-buttons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: #fff;
  color: #888;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid #e0e0e0;
  transition: all 0.2s;
}
.sns-buttons a:hover {
  background: #0066cc;
  color: #fff;
  border-color: #0066cc;
}

/* ===== 免責・フッター ===== */
.disclaimer {
  text-align: center;
  padding: 24px 0 40px;
  font-size: 12px;
  color: #aaa;
  line-height: 2;
}
.site-footer {
  text-align: center;
  padding: 24px 0;
  font-size: 13px;
  color: #bbb;
  border-top: 1px solid #e8e8e0;
}
.site-footer a { color: #999; text-decoration: none; }

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
  .site-header h1 { font-size: 22px; }
  .layer1-body, .layer2-body { padding: 20px 16px; }
  .layer1-body .topic h3 { font-size: 18px; }
  .layer2-body .check .summary { font-size: 16px; }
  .layer1-closing, .layer2-overall { padding: 14px 16px; }
}