/* Runta Blog Theme - Cyberpunk Dark Aesthetic */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');

/* ── CSS Variables ── */
:root {
  --background: hsl(240 20% 3%);
  --background-card: hsl(240 20% 6%);
  --foreground: hsl(210 40% 98%);
  --foreground-muted: hsl(215 20% 55%);
  --primary: hsl(25 95% 55%);
  --primary-hover: hsl(35 100% 60%);
  --secondary: hsl(35 100% 60%);
  --border: hsl(240 15% 20%);
  --glow-primary: 25 95% 55%;
  --glow-secondary: 35 100% 60%;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --radius: 6px;
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: hsl(240 20% 3%);
  color: hsl(210 40% 98%);
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Background Effects ── */
.bg-effects {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.bg-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--background), color-mix(in hsl, var(--background) 95%, transparent), var(--background));
}

.bg-grid {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    linear-gradient(hsl(var(--glow-primary)) 1px, transparent 1px),
    linear-gradient(90deg, hsl(var(--glow-primary)) 1px, transparent 1px);
  background-size: 50px 50px;
}

.bg-glow-1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  opacity: 0.15;
  background: radial-gradient(circle, hsl(var(--glow-primary) / 0.3) 0%, transparent 70%);
}

.bg-glow-2 {
  position: absolute;
  top: 30%;
  left: 25%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  opacity: 0.08;
  background: radial-gradient(circle, hsl(var(--glow-secondary) / 0.4) 0%, transparent 70%);
}

/* ── Particles ── */
.particles {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: hsl(var(--glow-primary) / 0.8);
  box-shadow: 0 0 15px hsl(var(--glow-primary));
  animation: particle-float linear infinite;
}

/* ── Layout ── */
.site-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* ── Header / Nav ── */
.site-header {
  position: relative;
  z-index: 50;
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid hsl(240 15% 20%);
  color: hsl(210 40% 98%);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.site-brand-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px hsl(var(--glow-primary) / 0.6));
  flex-shrink: 0;
}

.site-brand-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  background: linear-gradient(135deg, hsl(var(--glow-primary)), hsl(var(--glow-secondary)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 0 12px hsl(var(--glow-primary) / 0.5));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  color: hsl(215 20% 55%);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: hsl(25 95% 55%);
}

/* ── Main Content ── */
.site-main {
  flex: 1;
  padding: 3rem 0;
}

/* ── Hero (Home Page) ── */
.home-hero {
  text-align: center;
  padding: 4rem 0 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.home-hero-logo-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.75rem;
  animation: float 6s ease-in-out infinite;
}

.home-hero-logo-glow {
  position: absolute;
  inset: -40%;
  border-radius: 50%;
  background: radial-gradient(circle, hsl(var(--glow-primary) / 0.5) 0%, transparent 70%);
  filter: blur(20px);
  animation: pulse-glow 3s ease-in-out infinite;
}

.home-hero-logo {
  position: relative;
  width: 120px;
  height: 120px;
  object-fit: contain;
  filter: drop-shadow(0 0 30px hsl(var(--glow-primary) / 0.6));
  animation: fade-in-up 0.5s ease both;
}

@media (min-width: 768px) {
  .home-hero-logo {
    width: 160px;
    height: 160px;
  }
}

.home-hero-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: linear-gradient(135deg, hsl(var(--glow-primary)), hsl(var(--glow-secondary)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px hsl(var(--glow-primary) / 0.4));
  margin-bottom: 1rem;
  animation: fade-in-up 0.6s ease both;
}

.home-hero-subtitle {
  font-size: 1rem;
  color: var(--foreground-muted);
  letter-spacing: 0.05em;
  max-width: 40ch;
  margin: 0 auto;
  animation: fade-in-up 0.6s 0.2s ease both;
}

/* ── Post List ── */
.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-list-item {
  border-bottom: 1px solid var(--border);
  animation: fade-in-up 0.5s ease both;
}

.post-list-item:first-child {
  border-top: 1px solid var(--border);
}

.post-list-link {
  display: block;
  padding: 1.5rem 0;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s ease;
}

.post-list-link:hover .post-list-title {
  color: var(--primary);
}

.post-list-meta {
  font-size: 0.7rem;
  color: var(--foreground-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.post-list-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--foreground);
  transition: color 0.2s ease;
  margin-bottom: 0.5rem;
}

.post-list-summary {
  font-size: 0.85rem;
  color: var(--foreground-muted);
  line-height: 1.6;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.post-tag {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: hsl(var(--glow-primary) / 0.8);
  border: 1px solid hsl(var(--glow-primary) / 0.3);
  border-radius: 100px;
  padding: 0.15rem 0.6rem;
  background: hsl(var(--glow-primary) / 0.05);
}

/* ── Single Post ── */
.post-header {
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.post-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.3;
  color: var(--foreground);
  margin-bottom: 1rem;
  animation: fade-in-up 0.5s ease both;
}

.post-meta {
  font-size: 0.72rem;
  color: var(--foreground-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  animation: fade-in-up 0.5s 0.1s ease both;
}

.post-meta-sep {
  color: var(--border);
}

/* ── Article Content ── */
.post-content {
  animation: fade-in-up 0.5s 0.2s ease both;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--foreground);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.post-content h2 {
  font-size: 1.4rem;
  color: hsl(var(--glow-primary));
}

.post-content h3 {
  font-size: 1.1rem;
  color: var(--foreground);
}

.post-content p {
  margin-bottom: 1.25rem;
  color: hsl(210, 30%, 85%);
}

.post-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.post-content a:hover {
  color: var(--secondary);
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1em 0.4em;
  color: hsl(var(--glow-secondary));
}

.post-content pre {
  background: var(--background-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  position: relative;
}

.post-content pre::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, hsl(var(--glow-primary) / 0.5), transparent);
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--foreground);
}

.post-content blockquote {
  border-left: 2px solid hsl(var(--glow-primary) / 0.5);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--foreground-muted);
  font-style: italic;
}

.post-content ul,
.post-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.post-content li {
  margin-bottom: 0.4rem;
  color: hsl(210, 30%, 85%);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.post-content img {
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* ── Section Heading ── */
.section-heading {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--foreground-muted);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Badge ── */
.badge {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: hsl(var(--glow-primary) / 0.8);
  border: 1px solid hsl(var(--glow-primary) / 0.3);
  border-radius: 100px;
  padding: 0.2rem 0.75rem;
  background: hsl(var(--glow-primary) / 0.05);
  backdrop-filter: blur(4px);
}

/* ── Footer ── */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer-brand {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: linear-gradient(135deg, hsl(var(--glow-primary)), hsl(var(--glow-secondary)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-footer-copy {
  font-size: 0.7rem;
  color: var(--foreground-muted);
  letter-spacing: 0.05em;
}

.site-footer-links {
  display: flex;
  gap: 1.25rem;
}

.site-footer-links a {
  font-size: 0.7rem;
  color: var(--foreground-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

.site-footer-links a:hover {
  color: var(--primary);
}

/* ── Pagination ── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.pagination a,
.pagination span {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--foreground-muted);
  transition: all 0.2s;
}

.pagination a:hover {
  border-color: hsl(var(--glow-primary) / 0.5);
  color: var(--primary);
}

.pagination .current {
  border-color: hsl(var(--glow-primary) / 0.5);
  color: var(--primary);
  background: hsl(var(--glow-primary) / 0.05);
}

/* ── Tags Page ── */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.tag-cloud a {
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: hsl(var(--glow-primary) / 0.8);
  border: 1px solid hsl(var(--glow-primary) / 0.25);
  border-radius: 100px;
  padding: 0.3rem 0.9rem;
  background: hsl(var(--glow-primary) / 0.04);
  transition: all 0.2s;
}

.tag-cloud a:hover {
  border-color: hsl(var(--glow-primary) / 0.6);
  background: hsl(var(--glow-primary) / 0.1);
  color: var(--primary);
}

/* ── Back Link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--foreground-muted);
  text-decoration: none;
  margin-bottom: 2rem;
  transition: color 0.2s;
}

.back-link:hover {
  color: var(--primary);
}

.back-link::before {
  content: '←';
}

/* ── Animations ── */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 0.3; }
}

@keyframes particle-float {
  0% {
    transform: translateY(110vh);
    opacity: 0;
  }
  5% { opacity: 1; }
  95% { opacity: 1; }
  100% {
    transform: translateY(-10vh);
    opacity: 0;
  }
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--background);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: hsl(var(--glow-primary) / 0.4);
}

/* ── Selection ── */
::selection {
  background: hsl(var(--glow-primary) / 0.25);
  color: var(--foreground);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .site-footer .container {
    flex-direction: column;
    align-items: flex-start;
  }
}