/* ==========================================================================
   Abel Creates - Modern Design System (Light Theme)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-badge: rgba(99, 102, 241, 0.08);
  --border-subtle: #e2e8f0;
  --border-highlight: rgba(99, 102, 241, 0.35);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-accent: #6366f1;
  --text-heading: #6366f1;

  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #38bdf8 100%);
  --accent-glow: 0 0 25px rgba(99, 102, 241, 0.25);
  --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
  --card-shadow-hover: 0 12px 30px -4px rgba(99, 102, 241, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.04);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --max-width: 900px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body.site-body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(56, 189, 248, 0.05) 0%, transparent 45%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-avatar {
  width: 34px;
  height: 34px;
  background: var(--accent-gradient);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: var(--accent-glow);
}

.brand-text {
  color: var(--text-primary);
}

.site-nav .nav-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: rgba(0, 0, 0, 0.04);
}

.nav-link.active {
  color: var(--text-heading);
  background-color: rgba(99, 102, 241, 0.1);
  font-weight: 600;
}

.nav-link-external {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Main Content Area */
.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

/* Hero Section */
.hero-section {
  padding: 3rem 0 4rem;
}

.hero-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}

.hero-text {
  flex: 1;
  min-width: 0;
}

.hero-media {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-avatar-wrapper {
  position: relative;
  display: inline-block;
}

.hero-avatar-wrapper::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: var(--accent-gradient);
  opacity: 0.3;
  filter: blur(10px);
  z-index: 0;
  transition: var(--transition);
}

.hero-avatar {
  position: relative;
  z-index: 1;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  border: 4px solid #ffffff;
  box-shadow: 0 12px 35px -6px rgba(99, 102, 241, 0.25), 0 4px 14px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
}

.hero-avatar-wrapper:hover .hero-avatar {
  transform: scale(1.03) translateY(-3px);
  box-shadow: 0 18px 45px -6px rgba(99, 102, 241, 0.35), 0 6px 18px rgba(0, 0, 0, 0.08);
}

.hero-avatar-wrapper:hover::before {
  opacity: 0.55;
  filter: blur(14px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-badge);
  border: 1px solid var(--border-highlight);
  color: var(--text-accent);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.hero-badge-pulse {
  width: 7px;
  height: 7px;
  background-color: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 10px #22c55e;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.25rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-heading);
  margin-bottom: 1.25rem;
}

.hero-title .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 650px;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
  background: var(--bg-secondary);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

/* Sections */
.section-block {
  margin-top: 4rem;
}

.section-header {
  margin-bottom: 1.75rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-heading);
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--card-shadow);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-4px);
}

.card-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.card-top-row .card-tag {
  margin-bottom: 0;
}

.card-top-row .external-icon {
  color: var(--text-muted);
  transition: var(--transition);
}

.card:hover .card-top-row .external-icon {
  color: var(--text-accent);
  transform: translate(2px, -2px);
}

.card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-accent);
  margin-bottom: 0.75rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.card-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.55;
  flex-grow: 1;
}

.card-meta {
  margin-top: 1.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

/* Post List */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-row {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--card-shadow);
}

.post-row:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  box-shadow: var(--card-shadow-hover);
  transform: translateX(4px);
}

.post-row-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.post-row-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.post-row-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
  margin-left: 1.5rem;
}

/* Prose & Markdown Content Styling */
.prose {
  color: #334155;
  font-size: 1.075rem;
  line-height: 1.75;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  font-weight: 700;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
}

.prose h1 { font-size: 2.25rem; }
.prose h2 { font-size: 1.65rem; border-bottom: 1px solid var(--border-subtle); padding-bottom: 0.5rem; }
.prose h3 { font-size: 1.35rem; }

.prose p {
  margin-bottom: 1.35rem;
}

.prose a {
  color: var(--text-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: var(--transition);
}

.prose a:hover {
  color: #38bdf8;
}

.prose ul, .prose ol {
  margin-bottom: 1.35rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose blockquote {
  border-left: 4px solid var(--text-heading);
  padding: 0.75rem 1.25rem;
  background: rgba(99, 102, 241, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  color: #475569;
  font-style: italic;
}

.prose pre {
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
}

.prose code {
  font-family: var(--font-mono);
  background: rgba(99, 102, 241, 0.08);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.875em;
  color: #4f46e5;
}

.prose pre code {
  background: transparent;
  padding: 0;
  color: #e2e8f0;
}

.prose .footnotes {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.prose .footnotes ol {
  padding-left: 1.25rem;
  margin-bottom: 0;
}

.prose .footnotes li {
  margin-bottom: 0.5rem;
}

.prose .footnote {
  color: var(--text-heading);
  text-decoration: none;
  font-weight: 700;
  padding: 0 0.15rem;
}

.prose .reversefootnote {
  color: var(--text-heading);
  text-decoration: none;
  margin-left: 0.35rem;
}

/* Post and Page Container Layouts */
.post-container, .page-container {
  max-width: 760px;
  margin: 0 auto;
}

.post-nav-back {
  margin-bottom: 1.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.back-link:hover {
  color: var(--text-primary);
  transform: translateX(-3px);
}

.post-header, .page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.post-title, .page-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text-heading);
  margin-bottom: 0.75rem;
}

.post-description, .page-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.post-footer {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.post-author-box {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--bg-card);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--card-shadow);
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: var(--accent-gradient);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.author-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  display: block;
}

.author-bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

/* About Page Profile Layout */
.about-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.about-hero-text {
  flex: 1;
  min-width: 0;
}

.about-hero-text p {
  margin-bottom: 1.25rem;
}

.about-hero-text p:last-child {
  margin-bottom: 0;
}

.about-hero-media {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-avatar-wrapper {
  position: relative;
  display: inline-block;
}

.about-avatar-wrapper::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: var(--accent-gradient);
  opacity: 0.3;
  filter: blur(10px);
  z-index: 0;
  transition: var(--transition);
}

.about-avatar {
  position: relative;
  z-index: 1;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  border: 4px solid #ffffff;
  box-shadow: 0 12px 35px -6px rgba(99, 102, 241, 0.25), 0 4px 14px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
}

.about-avatar-wrapper:hover .about-avatar {
  transform: scale(1.03) translateY(-3px);
  box-shadow: 0 18px 45px -6px rgba(99, 102, 241, 0.35), 0 6px 18px rgba(0, 0, 0, 0.08);
}

.about-avatar-wrapper:hover::before {
  opacity: 0.55;
  filter: blur(14px);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #f8fafc;
  padding: 3.5rem 1.5rem 2.5rem;
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-heading);
  display: block;
  margin-bottom: 0.5rem;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.footer-links {
  display: flex;
  gap: 3.5rem;
}

.link-group h4 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.link-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.link-group a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition);
}

.link-group a:hover {
  color: var(--text-heading);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--text-heading);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero-layout,
  .about-hero {
    flex-direction: column-reverse;
    align-items: center;
    text-align: left;
    gap: 2rem;
  }
  .hero-media,
  .about-hero-media {
    align-self: center;
  }
  .hero-avatar,
  .about-avatar {
    width: 160px;
    height: 160px;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .hero-description {
    font-size: 1.05rem;
  }
  .post-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .post-row-date {
    margin-left: 0;
  }
  .footer-links {
    gap: 2rem;
  }
}