/* ==========================================================================
   Geini Modern - Clean & Beautiful Tech Blog Theme
   Reference: GeneratePress / Astra / Twenty Twenty-Four
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-secondary: #555770;
  --color-text-muted: #8b8da3;
  --color-border: #e8e8ec;
  --color-border-light: #f0f0f4;
  --color-link: #2563eb;
  --color-link-hover: #1d4ed8;
  --color-accent: #0ea5e9;
  --color-tag-bg: #eef2ff;
  --color-tag-text: #4338ca;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', Georgia, serif;
  --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;
  --max-width: 780px;
  --radius: 6px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-bg-alt: #1e293b;
  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #334155;
  --color-border-light: #1e293b;
  --color-link: #38bdf8;
  --color-link-hover: #7dd3fc;
  --color-tag-bg: #1e3a8a;
  --color-tag-text: #93c5fd;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: #334155;
    --color-border-light: #1e293b;
    --color-link: #38bdf8;
    --color-link-hover: #7dd3fc;
    --color-tag-bg: #1e3a8a;
    --color-tag-text: #93c5fd;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Layout */
.wrapper { min-height: 100vh; display: flex; flex-direction: column; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex; align-items: center; gap: 20px;
  height: 64px;
}
.site-brand { text-decoration: none; color: var(--color-text); flex-shrink: 0; }
.site-name { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.site-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 6px 12px; color: var(--color-text-secondary);
  text-decoration: none; font-size: 0.875rem; font-weight: 500;
  border-radius: var(--radius); transition: all var(--transition);
}
.site-nav a:hover, .site-nav a.active { color: var(--color-link); background: var(--color-tag-bg); }
.site-search { display: flex; align-items: center; margin-left: auto; }
.site-search input {
  height: 34px; padding: 0 10px; border: 1px solid var(--color-border);
  border-right: none; border-radius: var(--radius) 0 0 var(--radius);
  background: var(--color-bg); color: var(--color-text);
  font-size: 0.8125rem; width: 140px; transition: all var(--transition);
}
.site-search input:focus { width: 180px; outline: none; border-color: var(--color-link); }
.site-search button {
  width: 34px; height: 34px; border: 1px solid var(--color-border);
  border-radius: 0 var(--radius) var(--radius) 0; background: var(--color-bg);
  color: var(--color-text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.nav-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center;
  border: none; background: none; color: var(--color-text); cursor: pointer; border-radius: var(--radius); }
.nav-toggle:hover { background: var(--color-bg-alt); }

/* Mobile Nav */
#nav-toggler { display: none; }
#nav-toggler:checked ~ .mobile-nav { display: block; }
.mobile-nav {
  display: none; padding: 12px 0;
  border-top: 1px solid var(--color-border);
}
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav li { border-bottom: 1px solid var(--color-border-light); }
.mobile-nav a { display: block; padding: 12px 0; color: var(--color-text); text-decoration: none; font-weight: 500; }
.mobile-nav a.active { color: var(--color-link); }
.mobile-search input {
  width: 100%; height: 40px; margin-top: 8px; padding: 0 12px;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-bg); color: var(--color-text);
}

/* Main */
.site-main { flex: 1; padding: 32px 0 64px; }
.page-header { margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); }
.page-header h1 { font-size: 1.5rem; font-weight: 700; margin: 0 0 4px; }
.page-desc { font-size: 0.875rem; color: var(--color-text-muted); margin: 0; }

/* Posts List */
.posts-list { display: flex; flex-direction: column; }
.post-item { padding: 24px 0; }
.post-item-header { margin-bottom: 12px; }
.post-item-title {
  font-size: 1.375rem; font-weight: 700; line-height: 1.35;
  margin: 0 0 8px; letter-spacing: -0.01em;
}
.post-item-title a { color: var(--color-text); text-decoration: none; }
.post-item-title a:hover { color: var(--color-link); }
.post-item-excerpt {
  font-size: 0.9375rem; line-height: 1.75;
  color: var(--color-text-secondary);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.post-item-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; }
.read-more { font-size: 0.875rem; color: var(--color-link); text-decoration: none; font-weight: 500; }
.read-more:hover { color: var(--color-link-hover); }
.post-separator { border: none; border-top: 1px solid var(--color-border); margin: 0; }

/* Post Meta */
.post-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.tag {
  display: inline-flex; align-items: center; padding: 2px 10px;
  font-size: 0.75rem; font-weight: 500; color: var(--color-tag-text);
  background: var(--color-tag-bg); border-radius: 999px; text-decoration: none;
}
.tag:hover { background: var(--color-link); color: #fff; }
.date { font-size: 0.8125rem; color: var(--color-text-muted); }
.views { font-size: 0.8125rem; color: var(--color-text-muted); }

/* Post Single */
.post-single-header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--color-border); }
.post-single-title {
  font-size: 2rem; font-weight: 800; line-height: 1.3;
  margin: 0 0 12px; letter-spacing: -0.02em; color: var(--color-text);
}
.post-content {
  font-size: 1.0625rem; line-height: 1.85; color: var(--color-text);
}
.post-content p { margin: 0 0 1.5em; }
.post-content h2 {
  font-size: 1.5rem; font-weight: 700; margin: 2.5em 0 1em;
  padding-bottom: 0.5em; border-bottom: 1px solid var(--color-border);
}
.post-content h3 { font-size: 1.25rem; font-weight: 600; margin: 2em 0 0.75em; }
.post-content h4 { font-size: 1.125rem; font-weight: 600; margin: 1.5em 0 0.5em; }
.post-content a { color: var(--color-link); text-decoration: underline; text-underline-offset: 3px; }
.post-content a:hover { color: var(--color-link-hover); }
.post-content img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 1.5em 0; }
.post-content blockquote {
  margin: 2em 0; padding: 1.25em 1.5em;
  border-left: 3px solid var(--color-link);
  background: var(--color-bg-alt); border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-text-secondary); font-style: italic;
}
.post-content blockquote p { margin: 0; }
.post-content pre {
  background: var(--color-bg-alt); padding: 1.25em;
  border-radius: var(--radius); overflow-x: auto; margin: 2em 0;
  font-size: 0.875rem; line-height: 1.7; border: 1px solid var(--color-border);
}
.post-content code {
  font-family: var(--font-mono); font-size: 0.875em;
  background: var(--color-bg-alt); padding: 2px 6px;
  border-radius: 4px; color: var(--color-link); border: 1px solid var(--color-border);
}
.post-content :not(pre) > code { background: var(--color-bg-alt); }
.post-content ul, .post-content ol { padding-left: 1.5em; margin: 0 0 1.5em; }
.post-content li { margin-bottom: 0.5em; }
.post-content table {
  width: 100%; border-collapse: collapse; margin: 2em 0; font-size: 0.9375rem;
}
.post-content th, .post-content td {
  padding: 10px 14px; border: 1px solid var(--color-border); text-align: left;
}
.post-content th { background: var(--color-bg-alt); font-weight: 600; }
.post-content hr { margin: 2.5em 0; border: none; border-top: 1px solid var(--color-border); }
.post-content strong { font-weight: 600; color: var(--color-text); }

/* Tags */
.post-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--color-border); }

/* Post Nav */
.post-nav {
  display: flex; justify-content: space-between; gap: 16px;
  margin: 32px 0; padding: 24px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border);
}
.post-nav-prev, .post-nav-next { flex: 1; }
.post-nav-next { text-align: right; }
.post-nav a { color: var(--color-text); text-decoration: none; font-weight: 500; font-size: 0.9375rem; }
.post-nav a:hover { color: var(--color-link); }
.post-nav .label { font-size: 0.75rem; color: var(--color-text-muted); display: block; margin-bottom: 4px; }

.post-separator { margin: 32px 0; border: none; border-top: 1px solid var(--color-border); }

/* Comments */
#comments { margin-top: 32px; }
.comments-title {
  font-size: 1.25rem; font-weight: 600; margin: 0 0 24px;
  padding-bottom: 16px; border-bottom: 1px solid var(--color-border);
}
.comment-form { background: var(--color-bg-alt); padding: 24px; border-radius: var(--radius); }
.form-row { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 12px; }
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%; padding: 10px 14px; border: 1px solid var(--color-border);
  border-radius: var(--radius); background: var(--color-bg); color: var(--color-text);
  font-size: 0.9375rem; font-family: var(--font-sans);
}
.comment-form input:focus, .comment-form textarea:focus {
  outline: none; border-color: var(--color-link); box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.comment-form textarea { resize: vertical; min-height: 120px; }
.form-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; }
.cancel-reply { color: var(--color-text-muted); text-decoration: none; font-size: 0.875rem; }
.btn-submit {
  padding: 10px 24px; background: var(--color-link); color: #fff;
  border: none; border-radius: var(--radius); font-size: 0.9375rem; font-weight: 500; cursor: pointer;
}
.btn-submit:hover { background: var(--color-link-hover); }
.comment-list { list-style: none; padding: 0; margin: 0 0 24px; }
.comment-body {
  padding: 16px; margin-bottom: 12px; background: var(--color-bg-alt);
  border: 1px solid var(--color-border); border-radius: var(--radius);
}
.comment-author { font-weight: 600; color: var(--color-text); }
.comment-meta { font-size: 0.8125rem; color: var(--color-text-muted); margin-top: 6px; }
.comment-children { margin-left: 24px; margin-top: 12px; }

/* Page Navigator */
.page-nav { margin-top: 40px; text-align: center; }
.page-nav nav { display: block; text-align: center; }
.page-links {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0;
}
.page-links a,
.page-links span,
.page-links span a {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-secondary);
  background: var(--color-bg);
  line-height: 1;
  white-space: nowrap;
  box-sizing: border-box;
}
.page-links a:hover,
.page-links span a:hover { border-color: var(--color-link); color: var(--color-link); background: var(--color-tag-bg); }
.page-links .current {
  border-color: var(--color-link) !important;
  background: var(--color-link) !important;
  color: #fff !important;
  cursor: default;
}
.page-links .current a { color: #fff !important; }
.page-links .prev a, .page-links .next a { min-width: auto; padding: 0 16px; }
.page-links span span { display: none; }

/* Footer */
.site-footer {
  padding: 24px 0; background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8125rem; color: var(--color-text-muted);
}
.footer-right { display: flex; align-items: center; gap: 16px; }
.rss-link { display: inline-flex; align-items: center; gap: 6px; color: var(--color-text-muted); text-decoration: none; }
.rss-link:hover { color: var(--color-link); }
.powered a { color: var(--color-text-muted); text-decoration: none; }
.powered a:hover { color: var(--color-link); }

/* Empty State */
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }

/* Error Page */
.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-size: 4rem; font-weight: 800; color: var(--color-link); margin: 0 0 16px; line-height: 1; }
.error-page p { color: var(--color-text-secondary); margin: 0 0 24px; }
.btn-link {
  display: inline-block; padding: 10px 24px; background: var(--color-link);
  color: #fff; text-decoration: none; border-radius: var(--radius);
  font-size: 0.9375rem; font-weight: 500;
}
.btn-link:hover { background: var(--color-link-hover); }

/* Responsive */
@media (min-width: 640px) { .form-row { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) {
  .site-nav { display: block; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
  .post-single-title { font-size: 2.25rem; }
}
@media (max-width: 767px) {
  .site-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-main { padding: 24px 0 48px; }
  .post-item-title { font-size: 1.125rem; }
  .post-single-title { font-size: 1.625rem; }
  .post-content { font-size: 1rem; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
  .post-nav { flex-direction: column; }
  .post-nav-next { text-align: left; }
}

@media (min-width: 1024px) {
  .container { max-width: var(--max-width); }
}

/* Print */
@media print {
  .site-header, .site-footer, #comments, .site-search, .nav-toggle { display: none !important; }
  body { font-size: 12pt; color: #000; background: #fff; }
  a { text-decoration: underline; color: #000; }
  .post-item { border: none; padding: 0; margin-bottom: 2rem; break-inside: avoid; }
}