/* Simple AI — Minimalist High-Leverage Agentic Workflow Stylesheet */
/* Styled after mecharuby.jefflunt.com and jefflunt.com */

:root {
  /* Dark Palette Tokens */
  --bg: #0b0c0f;
  --surface: #14171d;
  --surface-hover: #1b1f28;
  --surface-elevated: #202632;
  --text: #f0f3f8;
  --muted: #949ca8;
  --border: #252b36;
  --border-light: #343c4c;

  /* Cyan & Emerald Primary Brand Tokens */
  --brand: #06b6d4;
  --brand-hover: #22d3ee;
  --brand-glow: rgba(6, 182, 212, 0.2);
  --brand-tint: #082f49;
  --brand-border: #0e7490;

  --accent-green: #10b981;
  --accent-green-tint: #064e3b;
  --accent-green-border: #047857;

  --accent-purple: #a855f7;
  --accent-purple-tint: #3b0764;
  --accent-amber: #f59e0b;

  /* Terminal / Code Surface */
  --term-bg: #0c0e13;
  --term-header: #161a22;
  --term-border: #262c37;
  --term-text: #e6e9ef;
  --term-muted: #838b99;
  --term-green: #34d399;
  --term-cyan: #38bdf8;
  --term-yellow: #fbbf24;
  --term-red: #f87171;

  color-scheme: dark;
  accent-color: var(--brand);

  /* Typography Stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: "Chakra Petch", var(--font-sans);
  --font-body: "Atkinson Hyperlegible", var(--font-sans);
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

@media (forced-colors: active) {
  :root {
    --bg: Canvas;
    --surface: Canvas;
    --text: CanvasText;
    --muted: GrayText;
    --border: CanvasText;
    --brand: LinkText;
    --brand-border: Highlight;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  line-height: 1.65;
  text-align: start;
  overflow-wrap: break-word;
  border-top: 4px solid var(--brand);
}

::selection {
  background-color: var(--brand);
  color: #041018;
}

/* Typography Rules */
h1,
h2,
h3,
h4,
.brand-name {
  font-family: var(--font-heading);
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
  text-wrap: balance;
  margin-top: 0;
}

h1 {
  font-size: clamp(2.2rem, 1.6rem + 2.5vw, 3.75rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.25rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.55rem);
  margin-bottom: 0.75rem;
}

p,
li,
blockquote {
  text-wrap: pretty;
}

p {
  margin-top: 0;
  margin-bottom: 1.35rem;
  max-width: 68ch;
}

a {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.2em;
  transition: color 0.15s ease;
}

a:hover,
a:focus-visible {
  color: var(--brand-hover);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--term-cyan);
}

pre {
  background-color: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 8px;
  padding: 1.2rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9em;
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.prose-container {
  max-width: 48rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background-color: rgba(11, 12, 15, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  gap: 1.5rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.brand-link:hover .brand-name {
  color: var(--brand-hover);
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: inline-block;
  vertical-align: middle;
}

.brand-name {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-name .accent {
  color: var(--brand);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.nav-cta {
  background-color: var(--brand-tint);
  border: 1px solid var(--brand-border);
  color: var(--brand) !important;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.15s ease;
}

.nav-cta:hover {
  background-color: var(--brand);
  color: #041018 !important;
}

/* Hero Section */
.hero {
  padding-block: clamp(3rem, 6vh, 5.5rem) clamp(2rem, 4vh, 3.5rem);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: 10%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--brand-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
  background-color: var(--brand-tint);
  border: 1px solid var(--brand-border);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.hero h1 .highlight {
  color: var(--brand);
  background: linear-gradient(135deg, #22d3ee 0%, #06b6d4 50%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lede {
  font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);
  line-height: 1.6;
  color: var(--text);
  max-width: 58ch;
  margin-bottom: 2rem;
}

/* Stats / Pill Bar */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
}

.stat-pill .num {
  color: var(--brand);
  font-weight: 700;
}

/* Video Section (Main Focus) */
.video-section {
  padding-block: clamp(2.5rem, 5vh, 4rem);
  background: linear-gradient(180deg, var(--bg) 0%, #0e1117 100%);
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 1.75rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--term-yellow);
  margin-bottom: 0.5rem;
  display: block;
}

.video-frame {
  background-color: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7), 0 0 30px -5px var(--brand-glow);
  margin-bottom: 1.25rem;
}

.video-frame-header {
  background-color: var(--term-header);
  border-bottom: 1px solid var(--term-border);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot-red, .dot-yellow, .dot-green {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background-color: var(--term-red); }
.dot-yellow { background-color: var(--term-yellow); }
.dot-green { background-color: var(--term-green); }

.window-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--term-muted);
}

.window-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-green);
  background-color: var(--accent-green-tint);
  border: 1px solid var(--accent-green-border);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.video-player-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #000;
}

.video-player-container video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background-color: #000;
}

.video-caption {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--muted);
}

.video-caption strong {
  color: var(--text);
}

.video-caption .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  flex-shrink: 0;
  box-shadow: 0 0 8px var(--accent-green);
}

/* Article Content & Flow */
.article-section {
  padding-block: clamp(3rem, 6vh, 5rem);
}

.article-content {
  font-size: 1.125rem;
  line-height: 1.75;
}

.article-lead {
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

/* Workflow Flowchart Visual */
.pipeline-flow {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-block: 2rem 3rem;
}

.pipeline-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  position: relative;
}

.flow-step {
  background-color: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 8px;
  padding: 0.9rem 0.75rem;
  text-align: center;
  transition: border-color 0.2s ease;
}

.flow-step:hover {
  border-color: var(--brand);
}

.flow-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand);
  margin-bottom: 0.25rem;
}

.flow-step-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
}

.flow-meta {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--brand);
}

/* Section 1: Model + Harness */
.feature-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 2.5rem;
  transition: border-color 0.2s ease;
}

.feature-card:hover {
  border-color: var(--border-light);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.feature-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background-color: var(--brand-tint);
  border: 1px solid var(--brand-border);
  color: var(--brand);
  text-transform: uppercase;
  font-weight: 600;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-block: 1.5rem 2.5rem;
}

.skill-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.35rem 1.5rem;
  transition: all 0.2s ease;
  position: relative;
}

.skill-card:hover {
  border-color: var(--brand-border);
  transform: translateY(-2px);
}

.skill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--brand);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  background-color: var(--term-bg);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--term-border);
}

.skill-card p {
  margin-bottom: 0;
  font-size: 1.05rem;
  color: var(--text);
}

/* Meta-Skill Section */
.meta-skill-card {
  background: linear-gradient(145deg, #10141d 0%, #151923 100%);
  border: 1px solid var(--brand-border);
  border-radius: 12px;
  padding: clamp(1.75rem, 3vw, 2.5rem);
  margin-block: 2.5rem;
  box-shadow: 0 0 25px -8px var(--brand-glow);
}

.meta-skill-card h3 {
  color: var(--brand);
}

.callout-quote {
  font-size: 1.2rem;
  line-height: 1.6;
  border-left: 3px solid var(--brand);
  padding-left: 1.25rem;
  margin-block: 1.5rem;
  color: var(--text);
  font-style: normal;
}

/* Terminal Command Box */
.terminal-block {
  background-color: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 10px;
  overflow: hidden;
  margin-block: 1.75rem;
}

.terminal-header {
  background-color: var(--term-header);
  border-bottom: 1px solid var(--term-border);
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--term-text);
  overflow-x: auto;
}

.terminal-prompt {
  color: var(--term-green);
  user-select: none;
  margin-right: 0.5rem;
}

.terminal-comment {
  color: var(--term-muted);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 3.5rem 2.5rem;
  background-color: #08090b;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  font-size: 0.85rem;
}

.site-version {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
}