/* pikl.jp — Refined Light Tech Blog */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=JetBrains+Mono:wght@400;500&family=DM+Sans:wght@400;500;700&display=swap');

:root {
  --pikl-ink: #1d1d1f;
  --pikl-body: #424245;
  --pikl-subtle: #86868b;
  --pikl-muted: #a1a1a6;
  --pikl-border: #e8e8ed;
  --pikl-surface: #fbfbfd;
  --pikl-card: #ffffff;
  --pikl-blue: #0066cc;
  --pikl-blue-light: #e8f1fb;
  --pikl-blue-hover: #004499;
  --pikl-green: #1d7d3f;
  --pikl-green-light: #e6f4ec;
  --pikl-radius: 16px;
  --pikl-radius-sm: 10px;
  --pikl-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.06);
  --pikl-shadow-hover: 0 2px 8px rgba(0,0,0,0.06), 0 8px 32px rgba(0,0,0,0.1);
  --pikl-content-width: 720px;
  --pikl-wide-width: 1080px;
}

/* ── Reset & Base ── */
* { box-sizing: border-box; }

body {
  font-family: 'Noto Sans JP', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--pikl-body);
  background: var(--pikl-surface);
  line-height: 1.8;
  font-size: 15.5px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}

/* ── Header ── */
.site-header {
  background: var(--pikl-card) !important;
  border-bottom: 1px solid var(--pikl-border);
  padding: 0 !important;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background: rgba(255,255,255,0.85) !important;
}

.inside-header {
  max-width: var(--pikl-wide-width);
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.main-title a, .site-title a {
  color: var(--pikl-ink) !important;
  font-weight: 900;
  font-size: 1.25rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.main-title a::before, .site-title a::before {
  content: "⚡ ";
}

.main-navigation a, .menu a {
  color: var(--pikl-body) !important;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  transition: all 0.2s;
}

.main-navigation a:hover, .menu a:hover {
  color: var(--pikl-blue) !important;
  background: var(--pikl-blue-light);
}

/* ── Content Layout ── */
.site-content {
  max-width: var(--pikl-wide-width);
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

#primary {
  max-width: var(--pikl-content-width);
}

/* ── Article Cards (List View) ── */
.post {
  background: var(--pikl-card);
  border-radius: var(--pikl-radius);
  padding: 2rem 2.2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--pikl-shadow);
  border: 1px solid var(--pikl-border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.post:hover {
  box-shadow: var(--pikl-shadow-hover);
  transform: translateY(-2px);
  border-color: var(--pikl-blue);
}

/* ── Article Title ── */
.entry-title, .entry-title a {
  color: var(--pikl-ink) !important;
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.35;
  text-decoration: none;
  letter-spacing: -0.025em;
  transition: color 0.2s;
}

.entry-title a:hover {
  color: var(--pikl-blue) !important;
}

/* Single post title */
.single .entry-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

/* ── Meta Info ── */
.entry-meta {
  color: var(--pikl-muted);
  font-size: 0.8rem;
  font-weight: 400;
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--pikl-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.entry-meta a {
  color: var(--pikl-blue);
  text-decoration: none;
  font-weight: 500;
}

/* ── Article Body ── */
.entry-content {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--pikl-body);
}

.entry-content p {
  margin-bottom: 1.6rem;
}

.entry-content strong {
  color: var(--pikl-ink);
  font-weight: 700;
}

/* ── Headings ── */
.entry-content h2 {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--pikl-ink);
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-left: 0.8rem;
  border-left: 4px solid var(--pikl-blue);
  letter-spacing: -0.02em;
  line-height: 1.4;
}

.entry-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--pikl-ink);
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  letter-spacing: -0.01em;
}

/* ── Tables ── */
.entry-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  font-size: 0.9rem;
  border-radius: var(--pikl-radius-sm);
  overflow: hidden;
  box-shadow: var(--pikl-shadow);
  border: 1px solid var(--pikl-border);
}

.entry-content thead {
  background: var(--pikl-ink);
}

.entry-content th {
  color: #fff;
  padding: 0.85rem 1.1rem;
  text-align: left;
  font-weight: 500;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.entry-content td {
  padding: 0.8rem 1.1rem;
  border-bottom: 1px solid var(--pikl-border);
  vertical-align: top;
}

.entry-content tbody tr:last-child td {
  border-bottom: none;
}

.entry-content tbody tr:nth-child(even) {
  background: #f8f9fa;
}

.entry-content tbody tr:hover {
  background: var(--pikl-blue-light);
}

/* ── Code Blocks ── */
.entry-content pre {
  background: #1a1a2e;
  color: #e4e4e7;
  padding: 1.4rem 1.6rem;
  border-radius: var(--pikl-radius-sm);
  overflow-x: auto;
  margin: 1.8rem 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  border: 1px solid #2d2d44;
}

.entry-content code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--pikl-blue-light);
  color: var(--pikl-blue);
  padding: 0.15rem 0.45rem;
  border-radius: 5px;
  font-size: 0.85em;
  font-weight: 500;
}

.entry-content pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-weight: 400;
}

/* ── Lists ── */
.entry-content ul, .entry-content ol {
  margin: 1.2rem 0 1.8rem 0;
  padding-left: 1.2rem;
}

.entry-content li {
  margin-bottom: 0.6rem;
  line-height: 1.75;
  padding-left: 0.3rem;
}

.entry-content ul li::marker {
  color: var(--pikl-blue);
}

/* ── Links ── */
.entry-content a {
  color: var(--pikl-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.entry-content a:hover {
  color: var(--pikl-blue-hover);
  text-decoration: underline;
}

/* ── Blockquote ── */
.entry-content blockquote {
  border-left: 4px solid var(--pikl-blue);
  background: var(--pikl-blue-light);
  padding: 1.2rem 1.5rem;
  margin: 1.8rem 0;
  border-radius: 0 var(--pikl-radius-sm) var(--pikl-radius-sm) 0;
  color: var(--pikl-body);
  font-style: normal;
}

/* ── Categories & Tags ── */
.cat-links a, .tag-links a {
  background: var(--pikl-blue-light);
  color: var(--pikl-blue);
  padding: 0.25rem 0.7rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}

.cat-links a:hover, .tag-links a:hover {
  background: var(--pikl-blue);
  color: #fff;
}

/* ── Sidebar ── */
.widget-area {
  font-size: 0.88rem;
}

.widget {
  background: var(--pikl-card);
  border-radius: var(--pikl-radius);
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--pikl-shadow);
  border: 1px solid var(--pikl-border);
}

.widget-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--pikl-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--pikl-border);
  margin-bottom: 0.8rem;
}

.widget ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.widget ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--pikl-border);
}

.widget ul li:last-child {
  border-bottom: none;
}

.widget ul li a {
  color: var(--pikl-body);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.widget ul li a:hover {
  color: var(--pikl-blue);
}

/* ── Search ── */
.search-form {
  display: flex;
  gap: 0;
}

.search-field {
  border: 1px solid var(--pikl-border) !important;
  border-radius: 8px 0 0 8px !important;
  padding: 0.6rem 1rem !important;
  font-size: 0.9rem !important;
  background: var(--pikl-surface) !important;
  flex: 1;
  outline: none;
}

.search-field:focus {
  border-color: var(--pikl-blue) !important;
}

.search-submit {
  background: var(--pikl-blue) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 0 8px 8px 0 !important;
  padding: 0.6rem 1rem !important;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.search-submit:hover {
  background: var(--pikl-blue-hover) !important;
}

/* ── Footer ── */
.site-footer {
  background: var(--pikl-card) !important;
  border-top: 1px solid var(--pikl-border);
  color: var(--pikl-muted);
  text-align: center;
  padding: 2rem;
  font-size: 0.82rem;
}

.site-footer a {
  color: var(--pikl-blue);
  text-decoration: none;
}

/* ── Read More Link ── */
a.read-more,
.entry-content a.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--pikl-blue);
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none !important;
  transition: all 0.2s;
  margin-top: 0.5rem;
}

a.read-more:hover {
  background: var(--pikl-blue-hover);
  transform: translateX(2px);
}

a.read-more::after {
  content: " →";
}

/* ── Pagination ── */
.nav-links {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.nav-links a, .nav-links span {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-links a {
  background: var(--pikl-card);
  color: var(--pikl-body);
  border: 1px solid var(--pikl-border);
  text-decoration: none;
  transition: all 0.2s;
}

.nav-links a:hover {
  border-color: var(--pikl-blue);
  color: var(--pikl-blue);
}

.nav-links .current {
  background: var(--pikl-blue);
  color: #fff;
}

/* ── Comments ── */
.comments-area {
  background: var(--pikl-card);
  border-radius: var(--pikl-radius);
  padding: 2rem;
  margin-top: 2rem;
  box-shadow: var(--pikl-shadow);
  border: 1px solid var(--pikl-border);
}

/* ── Post Navigation ── */
.post-navigation {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--pikl-card);
  border-radius: var(--pikl-radius);
  border: 1px solid var(--pikl-border);
}

.post-navigation a {
  color: var(--pikl-blue);
  text-decoration: none;
  font-weight: 500;
}

/* ── Mobile ── */
@media (max-width: 768px) {
  body {
    font-size: 14.5px;
  }
  
  .inside-header {
    padding: 0.7rem 1rem;
  }
  
  .site-content {
    padding: 1.2rem 1rem;
  }
  
  .post {
    padding: 1.4rem;
    border-radius: 12px;
    margin-bottom: 1rem;
  }
  
  .entry-title, .entry-title a {
    font-size: 1.25rem;
  }
  
  .single .entry-title {
    font-size: 1.5rem;
  }
  
  .entry-content h2 {
    font-size: 1.2rem;
    margin-top: 2rem;
  }
  
  .entry-content table {
    font-size: 0.8rem;
  }
  
  .entry-content th, .entry-content td {
    padding: 0.5rem 0.6rem;
  }
  
  .entry-content pre {
    font-size: 0.78rem;
    padding: 1rem;
    border-radius: 8px;
  }

  .widget {
    border-radius: 12px;
    padding: 1.2rem;
  }
}

/* ── Smooth Scroll ── */
html {
  scroll-behavior: smooth;
}

/* ── Selection Color ── */
::selection {
  background: var(--pikl-blue-light);
  color: var(--pikl-ink);
}