/* トコとこ ブログ スタイルシート */
:root {
  --mint: #7ec8c8;
  --mint-light: #b2e0e0;
  --mint-pale: #e8f7f7;
  --sage: #8ab8a8;
  --sage-light: #c5ddd5;
  --sky: #a8d4e6;
  --sky-pale: #dff0f8;
  --cream: #fafaf8;
  --text: #3d4a45;
  --text-light: #6b7c76;
  --text-pale: #9aada7;
  --white: #ffffff;
  --shadow: rgba(126,200,200,0.15);
  --radius: 14px;
  --radius-sm: 8px;
  --font: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--cream);
  color: var(--text);
  line-height: 1.85;
  font-size: 15px;
}

/* ===== HEADER ===== */
.site-header {
  background: linear-gradient(135deg, var(--mint) 0%, var(--sky) 100%);
  box-shadow: 0 2px 12px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 14px 20px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title-link { text-decoration: none; color: inherit; }

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.03em;
  text-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.site-subtitle {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.85);
  margin-top: 2px;
}

.menu-toggle {
  background: rgba(255,255,255,0.3);
  border: none;
  color: white;
  font-size: 1.3rem;
  cursor: pointer;
  border-radius: 6px;
  padding: 4px 10px;
  display: none;
}

.site-nav {
  background: rgba(255,255,255,0.15);
  padding: 8px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-width: 900px;
  margin: 0 auto;
}

.site-nav a {
  color: rgba(255,255,255,0.95);
  text-decoration: none;
  font-size: 0.82rem;
  padding: 4px 10px;
  border-radius: 20px;
  transition: background 0.2s;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a.active {
  background: rgba(255,255,255,0.3);
  color: white;
}

.nav-home {
  font-weight: 500;
}

/* ===== MAIN ===== */
.site-main {
  min-height: calc(100vh - 200px);
  padding-bottom: 60px;
}

.page-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px 20px;
}

/* ===== HERO ===== */
.hero {
  text-align: center;
  padding: 40px 20px 30px;
  background: linear-gradient(180deg, var(--sky-pale) 0%, var(--cream) 100%);
  border-radius: var(--radius);
  margin-bottom: 36px;
}

.hero-title {
  font-size: 1.8rem;
  color: var(--mint);
  font-weight: 700;
  margin-bottom: 8px;
}

.hero-desc {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ===== SECTIONS ===== */
.section-title {
  font-size: 1.1rem;
  color: var(--sage);
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--sage-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== POST GRID ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

/* ===== POST CARD ===== */
.post-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  overflow: hidden;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(126,200,200,0.25);
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.card-body {
  padding: 18px;
}

.card-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}

.cat-badge {
  background: var(--mint-pale);
  color: var(--mint);
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s;
}

a.cat-badge:hover {
  background: var(--mint-light);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.card-excerpt {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 10px;
  line-height: 1.6;
}

.card-date {
  font-size: 0.75rem;
  color: var(--text-pale);
  display: block;
}

/* ===== POST FULL ===== */
.post-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 30px 20px;
}

.post-full {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 2px 16px var(--shadow);
  overflow: hidden;
  margin-bottom: 30px;
}

.post-header {
  padding: 30px 30px 20px;
  border-bottom: 1px solid var(--mint-pale);
  background: linear-gradient(180deg, var(--sky-pale) 0%, var(--white) 100%);
}

.post-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}

.post-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 10px;
}

.post-date {
  font-size: 0.78rem;
  color: var(--text-pale);
}

.post-content {
  padding: 28px 30px;
  font-size: 0.95rem;
  line-height: 2;
  color: var(--text);
}

.post-content p {
  margin-bottom: 1.2em;
}

.post-content h2 {
  font-size: 1.15rem;
  color: var(--mint);
  margin: 1.8em 0 0.6em;
  padding-left: 10px;
  border-left: 3px solid var(--mint);
}

.post-content h3 {
  font-size: 1rem;
  color: var(--sage);
  margin: 1.4em 0 0.4em;
}

.post-content ul, .post-content ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}

.post-content li {
  margin-bottom: 0.3em;
}

.post-content img {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin: 1em 0;
}

.post-content a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-content blockquote {
  background: var(--mint-pale);
  border-left: 3px solid var(--mint);
  padding: 10px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1em 0;
  color: var(--text-light);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.9rem;
}

.post-content th, .post-content td {
  padding: 8px 12px;
  border: 1px solid var(--mint-light);
  text-align: left;
}

.post-content th {
  background: var(--mint-pale);
  font-weight: 600;
}

/* ===== POST NAV ===== */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.post-nav a {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  text-decoration: none;
  color: var(--text-light);
  font-size: 0.8rem;
  box-shadow: 0 2px 8px var(--shadow);
  transition: background 0.2s;
  line-height: 1.5;
}

.post-nav a:hover {
  background: var(--mint-pale);
}

.post-nav a span {
  display: block;
  font-weight: 600;
  color: var(--text);
  margin-top: 4px;
}

.post-nav-older { text-align: right; }

.back-to-top {
  text-align: center;
  margin-top: 10px;
}

.btn-back {
  display: inline-block;
  background: var(--mint);
  color: white;
  text-decoration: none;
  padding: 10px 24px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}

.btn-back:hover {
  background: var(--sage);
  transform: translateY(-2px);
}

/* ===== CATEGORY PAGE ===== */
.cat-header {
  padding: 30px 0 24px;
  border-bottom: 2px solid var(--sage-light);
  margin-bottom: 28px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.cat-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--sage);
}

.cat-count {
  font-size: 0.85rem;
  color: var(--text-pale);
}

/* ===== FOOTER ===== */
.site-footer {
  background: linear-gradient(135deg, var(--mint) 0%, var(--sky) 100%);
  color: rgba(255,255,255,0.9);
  text-align: center;
  padding: 30px 20px;
}

.footer-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.footer-desc {
  font-size: 0.82rem;
  opacity: 0.85;
  margin-bottom: 10px;
}

.footer-copy {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .menu-toggle { display: block; }
  .site-nav { display: none; }
  .site-nav.open { display: flex; }
  .posts-grid { grid-template-columns: 1fr; }
  .post-content { padding: 20px 18px; }
  .post-header { padding: 20px 18px 16px; }
  .post-nav { grid-template-columns: 1fr; }
  .hero-title { font-size: 1.4rem; }
  .post-title { font-size: 1.2rem; }
}