/* ============================================================
   assets/css/public.css
   Public frontend styles powered by theme CSS variables.
   ============================================================ */

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

:root {
  --bg: #fcfbf8;
  --surface: #ffffff;
  --border: #e7e1d8;
  --primary: #2563eb;
  --secondary: #dbeafe;
  --text: #1f2937;
  --text-muted: #6b7280;
  --link: #1d4ed8;
  --button-bg: #2563eb;
  --button-text: #ffffff;
  --font-heading: Arial, Helvetica, sans-serif;
  --font-body: Arial, Helvetica, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;
  --content-width: 960px;
  --radius-card: 14px;
  --radius-button: 10px;
  --border-width: 1px;
  --shadow-color-rgb: 51, 65, 85;
  --shadow-intensity: 0.12;
}

html { font-size: var(--font-size-base); scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: radial-gradient(circle at top center, color-mix(in srgb, var(--secondary) 26%, transparent), transparent 36%), var(--bg);
  color: var(--text);
  line-height: var(--line-height-base);
  min-height: 100vh;
  position: relative;
}
body.has-grain::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(15, 23, 42, .08) .7px, transparent .7px);
  background-size: 10px 10px;
  opacity: .10;
}
body.has-glow::after {
  content: "";
  position: fixed;
  inset: auto auto -120px -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 24%, transparent), transparent 68%);
  pointer-events: none;
  filter: blur(8px);
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6 { color: var(--text); font-family: var(--font-heading); line-height: 1.16; letter-spacing: -.03em; }

.container { width: min(100%, calc(var(--content-width) + 2.5rem)); margin: 0 auto; padding: 0 1.25rem; }
.site-main { position: relative; z-index: 1; }
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px); background: color-mix(in srgb, var(--surface) 88%, transparent); border-bottom: var(--border-width) solid var(--border); }
.header-inner { display: flex; align-items: center; gap: 1.5rem; min-height: 68px; }
.site-logo { color: var(--text); font-weight: 800; font-size: 1.12rem; letter-spacing: -.03em; }
.site-logo:hover { text-decoration: none; opacity: .88; }
.site-logo img { max-height: 38px; width: auto; }
.site-nav { display: flex; gap: .35rem; margin-left: auto; flex-wrap: wrap; }
.theme-profile-toggle {
  position: relative;
  z-index: 61;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  padding: .62rem .95rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--border) 88%, var(--text) 12%);
  background: color-mix(in srgb, var(--surface) 90%, var(--bg));
  color: var(--text);
  font: inherit;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(var(--shadow-color-rgb), calc(var(--shadow-intensity) + .05));
  transition: transform .18s, background .18s, color .18s, border-color .18s, box-shadow .18s;
}
.theme-profile-toggle:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--secondary) 24%, var(--surface));
}
.theme-profile-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.nav-link { padding: .5rem .8rem; border-radius: calc(var(--radius-button) - 2px); color: var(--text-muted); font-weight: 600; transition: background .18s, color .18s, transform .18s; }
.nav-link:hover { color: var(--text); background: color-mix(in srgb, var(--secondary) 40%, transparent); text-decoration: none; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: .35rem; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; background: var(--text); }

.hero { position: relative; padding: 5.75rem 0 4.5rem; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, color-mix(in srgb, var(--secondary) 44%, transparent), transparent 50%), radial-gradient(circle at top right, color-mix(in srgb, var(--primary) 16%, transparent), transparent 42%); opacity: .7; pointer-events: none; }
.hero .container { position: relative; z-index: 1; text-align: center; max-width: 860px; }
.hero-title { font-size: clamp(2.6rem, 6vw, 4.6rem); margin-bottom: .85rem; }
.hero-sub { font-size: 1.12rem; color: var(--text-muted); max-width: 620px; margin: 0 auto 2rem; }
.btn-cta { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .8rem 1.35rem; border-radius: var(--radius-button); border: var(--border-width) solid transparent; background: var(--button-bg); color: var(--button-text); font-weight: 700; box-shadow: 0 14px 26px rgba(var(--shadow-color-rgb), calc(var(--shadow-intensity) + .04)); transition: transform .18s, opacity .18s, box-shadow .18s, background .18s; }
.btn-cta:hover { text-decoration: none; opacity: .94; }
.btn-cta--outline { background: transparent; color: var(--link); border-color: var(--border); box-shadow: none; }
.btn-cta--outline:hover { background: color-mix(in srgb, var(--secondary) 35%, transparent); }

.home-posts, .blog-container, .post-single, .page-single { padding: 3.5rem 0; }
.section-title, .page-title { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 1.75rem; }

.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.5rem; }
.post-card, .post-row, .post-hero-img img, .prose pre, .prose table { border-radius: var(--radius-card); }
.post-card { background: color-mix(in srgb, var(--surface) 94%, transparent); border: var(--border-width) solid var(--border); overflow: hidden; box-shadow: 0 12px 28px rgba(var(--shadow-color-rgb), var(--shadow-intensity)); transition: transform .18s, box-shadow .18s, border-color .18s; }
body.has-card-lift .post-card:hover { transform: translateY(-4px); box-shadow: 0 22px 40px rgba(var(--shadow-color-rgb), calc(var(--shadow-intensity) + .08)); }
.post-card-img-link img { width: 100%; height: 190px; object-fit: cover; }
.post-card-body { padding: 1.1rem; }
.post-card-title { font-size: 1.08rem; margin-bottom: .45rem; }
.post-card-title a { color: var(--text); }
.post-card-title a:hover { color: var(--link); text-decoration: none; }
.post-card-excerpt, .post-row-excerpt, .post-row-meta, .post-meta, .back-link, .footer-copy { color: var(--text-muted); }
.post-card-excerpt { margin-bottom: .6rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post-card-meta { font-size: .82rem; color: var(--text-muted); }

.posts-list { display: flex; flex-direction: column; gap: 1.35rem; }
.post-row { display: grid; grid-template-columns: 220px 1fr; gap: 1.2rem; align-items: stretch; padding: 1rem; background: color-mix(in srgb, var(--surface) 92%, transparent); border: var(--border-width) solid var(--border); box-shadow: 0 10px 26px rgba(var(--shadow-color-rgb), var(--shadow-intensity)); }
body.has-card-lift .post-row:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(var(--shadow-color-rgb), calc(var(--shadow-intensity) + .05)); }
.post-row-img img { width: 100%; height: 100%; min-height: 180px; object-fit: cover; }
.post-row-body { display: flex; flex-direction: column; justify-content: center; }
.post-row-title { font-size: 1.35rem; margin-bottom: .45rem; }
.post-row-title a { color: var(--text); }
.post-row-title a:hover { color: var(--link); text-decoration: none; }

.pub-pagination { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 2.5rem; }
.pg-prev, .pg-next { padding: .55rem .9rem; border: var(--border-width) solid var(--border); border-radius: var(--radius-button); background: color-mix(in srgb, var(--surface) 90%, transparent); }
.pg-info { color: var(--text-muted); font-weight: 600; }

.post-hero-img img { width: 100%; max-height: 460px; object-fit: cover; border: var(--border-width) solid var(--border); box-shadow: 0 18px 40px rgba(var(--shadow-color-rgb), var(--shadow-intensity)); margin-bottom: 2rem; }
.post-title { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-bottom: .65rem; }
.post-footer { margin-top: 2.4rem; padding-top: 1.25rem; border-top: var(--border-width) solid var(--border); }

.prose { font-size: 1rem; }
.prose > * + * { margin-top: 1rem; }
.prose h1, .prose h2, .prose h3, .prose h4 { margin-top: 2rem; }
.prose ul, .prose ol { padding-left: 1.5rem; }
.prose li + li { margin-top: .35rem; }
.prose a { color: var(--link); text-decoration: underline; }
.prose blockquote { margin: 1.5rem 0; padding: .2rem 0 .2rem 1rem; border-left: 3px solid var(--primary); color: var(--text-muted); font-style: italic; }
.prose code { font-family: "Fira Code", "Cascadia Code", "Courier New", monospace; background: color-mix(in srgb, var(--secondary) 32%, transparent); padding: .18em .4em; border-radius: 6px; }
.prose pre { padding: 1.1rem; background: color-mix(in srgb, var(--surface) 78%, var(--bg)); border: var(--border-width) solid var(--border); overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose img { margin: 1.6rem 0; border-radius: calc(var(--radius-card) - 2px); border: var(--border-width) solid var(--border); }
.prose hr { border: none; border-top: var(--border-width) solid var(--border); margin: 2rem 0; }
.prose table { width: 100%; border-collapse: collapse; overflow: hidden; border: var(--border-width) solid var(--border); }
.prose th, .prose td { padding: .7rem .8rem; border-bottom: var(--border-width) solid var(--border); text-align: left; }
.prose th { background: color-mix(in srgb, var(--secondary) 28%, transparent); }

.site-footer { position: relative; margin-top: 4rem; padding: 2rem 0 2.3rem; background: color-mix(in srgb, var(--surface) 92%, var(--bg)); border-top: var(--border-width) solid var(--border); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-nav { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.footer-nav__link { color: var(--text-muted); font-weight: 600; }
.footer-nav__link:hover { color: var(--text); text-decoration: none; }
.footer-social { display: flex; gap: .85rem; }
.footer-social a { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: 999px; border: var(--border-width) solid var(--border); color: var(--text-muted); background: color-mix(in srgb, var(--surface) 88%, transparent); }
.footer-social a:hover { color: var(--text); text-decoration: none; }

body.has-animations .hero .container, body.has-animations .post-card, body.has-animations .post-row, body.has-animations .page-single, body.has-animations .post-single { animation: themeEnter .45s ease both; }
@keyframes themeEnter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 760px) {
  .header-inner { min-height: 60px; }
  .site-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; padding: .8rem 1rem 1rem; flex-direction: column; gap: .3rem; background: color-mix(in srgb, var(--surface) 95%, transparent); border-bottom: var(--border-width) solid var(--border); }
  .site-nav.open { display: flex; }
  .nav-toggle { display: flex; margin-left: auto; }
  .theme-profile-toggle { order: 3; width: 100%; margin-bottom: .85rem; }
  .post-row { grid-template-columns: 1fr; }
  .post-row-img img { min-height: 200px; }
  .hero { padding: 4.4rem 0 3.4rem; }
  .home-posts, .blog-container, .post-single, .page-single { padding: 2.4rem 0; }
}