/* ==========================================================================
   Design System & Base Settings (741 Systems Bespoke CSS)
   ========================================================================== */

:root {
  /* Color Palette - Deep Obsidian Slate & Warm Bronze Accent */
  --bg-base: hsl(220, 20%, 8%);
  --bg-surface: hsl(220, 20%, 12%);
  --bg-surface-elevated: hsl(220, 20%, 16%);
  
  --text-primary: hsl(210, 25%, 95%);
  --text-secondary: hsl(210, 15%, 75%);
  --text-muted: hsl(210, 10%, 55%);
  
  --accent: hsl(32, 75%, 55%);
  --accent-hover: hsl(32, 85%, 60%);
  --accent-soft: rgba(233, 131, 47, 0.12);
  --accent-glow: rgba(233, 131, 47, 0.05);

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --border-accent: hsla(32, 75%, 55%, 0.3);

  /* Typography */
  --font-sans: "Segoe UI", Arial, sans-serif;
  --font-display: "Arial Narrow", "Avenir Next Condensed", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* Grid & Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --max-width: 1100px;
  
  /* Animations */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --border-radius: 12px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-surface-elevated);
  border: 2px solid var(--bg-base);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  background-color: var(--bg-base);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.site-brand {
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  transition: transform var(--transition-fast);
}

.site-brand:hover {
  transform: translateY(-1px);
}

.brand-num {
  color: var(--accent);
  margin-right: 0.1rem;
}

.brand-text {
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link.active {
  color: var(--text-primary);
}

/* Main Content Area */
.site-main {
  flex: 1;
}

/* Hero Section */
.hero-section {
  position: relative;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-xl) var(--spacing-sm);
  overflow: hidden;
}

/* Decorative background glowing effect */
.hero-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(233, 131, 47, 0.08), transparent 70%);
  pointer-events: none;
  filter: blur(80px);
  z-index: 0;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: inline-block;
  background: var(--accent-soft);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  border: 1px solid var(--border-accent);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -1px;
  margin-bottom: 2rem;
}

.hero-title .highlight {
  color: transparent;
  background: linear-gradient(90deg, var(--accent), hsl(45, 85%, 60%));
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  max-width: 700px;
  margin: 0 auto 3rem;
  color: var(--text-secondary);
  font-weight: 300;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-base);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(233, 131, 47, 0.25);
}

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

.btn-secondary:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Homepage content */
.home-content {
  padding: var(--spacing-lg) var(--spacing-sm);
  max-width: var(--max-width);
  margin: 0 auto;
}

.home-inner {
  display: grid;
  gap: var(--spacing-md);
}

/* Pages Layout and Styling */
.page-article {
  padding-bottom: var(--spacing-lg);
}

.page-header {
  position: relative;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-lg) var(--spacing-sm);
  text-align: center;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(233, 131, 47, 0.04), transparent 70%);
  pointer-events: none;
  filter: blur(50px);
  z-index: 0;
}

.header-inner {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.page-description {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-secondary);
  font-weight: 300;
}

.post-category {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 1.5px;
  margin-bottom: 0.8rem;
}

.post-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
}

.page-content-wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

/* Markdown prose text styling */
.prose {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.prose p {
  margin-bottom: 1.5rem;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-display);
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.6rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
.prose h3 { font-size: 1.3rem; }

.prose ul, .prose ol {
  margin-bottom: 1.8rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.6rem;
}

/* Customized bullet list styles for service list */
.prose h3 + ul,
.prose h4 + ul {
  list-style: none;
  padding-left: 0;
}

.prose h3 + ul li,
.prose h4 + ul li {
  position: relative;
  padding-left: 1.8rem;
  margin-bottom: 0.8rem;
}

.prose h3 + ul li::before,
.prose h4 + ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

.prose a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid var(--accent);
  transition: all var(--transition-fast);
}

.prose a:hover {
  color: var(--accent);
  background-color: var(--accent-soft);
  border-bottom-color: var(--accent-hover);
}

.prose blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-surface);
  padding: 1.2rem 1.8rem;
  margin: 2rem 0;
  font-style: italic;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  color: var(--text-primary);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--bg-surface-elevated);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: var(--accent-hover);
}

/* Home Grid for Capabilities (Markdown UL -> CSS Grid Cards) */
.home-prose h3 {
  margin-top: 3.5rem;
  text-align: center;
}

.home-prose > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  list-style: none;
  padding-left: 0;
  margin-top: 2rem;
  margin-bottom: 3.5rem;
}

.home-prose > ul > li {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: 2.2rem;
  transition: all var(--transition-normal);
  position: relative;
  display: flex;
  flex-direction: column;
}

.home-prose > ul > li:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 1px rgba(233, 131, 47, 0.1);
}

.home-prose > ul > li strong {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 0.8rem;
  display: block;
}

.home-prose > ul > li::before {
  display: none !important;
}

/* Insights list page layout & cards */
.section-list {
  padding-bottom: var(--spacing-lg);
}

.list-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

.list-inner {
  display: grid;
  gap: var(--spacing-md);
}

.section-intro {
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
  text-align: center;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.insight-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
  transition: all var(--transition-normal);
}

.insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  display: block;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.card-title a:hover {
  color: var(--accent);
}

.card-summary {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  margin-top: auto;
}

.read-more-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.read-more-link .arrow {
  margin-left: 0.4rem;
  transition: transform var(--transition-fast);
}

.read-more-link:hover {
  color: var(--accent-hover);
}

.read-more-link:hover .arrow {
  transform: translateX(4px);
}

/* Footer Section */
.site-footer {
  border-top: 1px solid var(--border);
  background-color: var(--bg-surface);
  padding: var(--spacing-md) var(--spacing-sm);
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

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

.footer-tagline {
  font-size: 0.9rem;
  font-family: var(--font-display);
  color: var(--text-secondary);
  font-weight: 500;
}

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem 1rem;
  }
  
  .site-nav {
    width: 100%;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.5rem;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: 0.5rem;
  }
}