@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Source+Sans+3:ital,wght@0,400;0,600;0,700;1,400&family=Syne:wght@600;700;800&display=swap');

:root {
  /* Authoritative Ground and Ladder (Forest Botanical) */
  --ground: #E4EAE3;
  --surface: #D5DCD4;
  --surface-2: #C2CAC1;
  --line: #A0A79F;
  --ink-soft: #4A4F49;
  --ink: #272A27;
  --accent: #A86515;
  --accent-ink: #FFFFFF;

  /* Typography Families */
  --font-display: 'Syne', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Type Scale via Fluid Clamps */
  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.8438rem, 0.81rem + 0.2vw, 0.9375rem);
  --text-base: clamp(0.9688rem, 0.93rem + 0.25vw, 1.0625rem);
  --text-md: clamp(1.125rem, 1.06rem + 0.4vw, 1.25rem);
  --text-lg: clamp(1.3125rem, 1.22rem + 0.6vw, 1.5625rem);
  --text-xl: clamp(1.625rem, 1.48rem + 0.9vw, 2rem);
  --text-2xl: clamp(2rem, 1.78rem + 1.4vw, 2.625rem);
  --text-display: clamp(2.375rem, 1.95rem + 2.2vw, 3.75rem);

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Geometry & Structural Measures */
  --radius-xs: 2px;
  --radius-sm: 3px;
  --radius-md: 4px;
  --sidebar-w: 290px;
  --max-ch: 65ch;
  --hairline: 1px solid var(--line);
  --dock-height: 64px;

  /* Motion Tokens */
  --ease-mechanical: cubic-bezier(0.2, 0, 0.2, 1);
  --ease-snappy: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 140ms;
  --duration-normal: 220ms;
  --duration-long: 360ms;
}

/* Hard CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background-color: var(--ground);
  color: var(--ink);
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  font-weight: 400;
  color: var(--ink);
  background-color: var(--ground);
  min-height: 100vh;
  padding-bottom: var(--dock-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

/* Controls reset font inheritance safely without touching body */
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

img,
picture,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Base Headings & Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.02em;
  text-wrap: balance;
  overflow-wrap: break-word;
  word-break: normal;
}

h1 {
  font-size: var(--text-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h2 {
  font-size: var(--text-2xl);
  line-height: 1.15;
}

h3 {
  font-size: var(--text-xl);
  line-height: 1.25;
}

h4 {
  font-size: var(--text-lg);
  line-height: 1.3;
}

p {
  max-width: var(--max-ch);
  color: var(--ink);
}

p + p {
  margin-top: var(--space-4);
}

small {
  font-size: var(--text-sm);
  color: var(--ink-soft);
}

code,
kbd,
samp,
pre,
.tabular,
.numeral,
.vin,
.mono {
  font-family: var(--font-mono);
  font-feature-settings: 'tnum' 1;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 1000;
  padding: var(--space-3) var(--space-5);
  background: var(--ink);
  color: var(--ground);
  font-weight: 600;
  border: 1px solid var(--accent);
  border-radius: var(--radius-xs);
  transform: translateY(-200%);
  transition: transform var(--duration-fast) var(--ease-snappy);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Icon Sprites */
.icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

/* Layout Shell Primitives */
.app-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

.content-column {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background-color: var(--ground);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
  min-width: 0;
}

.content-container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

/* Signature Moment: Asymmetric Headline Lockup */
.lockup-headline {
  display: flex;
  flex-direction: column;
  position: relative;
  margin-bottom: var(--space-6);
}

.lockup-headline .lockup-prefix {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-bottom: var(--space-2);
}

.lockup-headline .lockup-main {
  position: relative;
  display: block;
}

.lockup-headline .lockup-rule {
  display: block;
  height: 2px;
  background: var(--line);
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
  width: 100%;
  max-width: 320px;
}

.lockup-headline .lockup-offset {
  display: block;
  padding-left: var(--space-6);
  color: var(--ink-soft);
}

/* Plate Book Layout Primitives */
.plate-section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: var(--hairline);
}

.plate-figure {
  width: 100%;
  margin-bottom: var(--space-6);
  background-color: var(--surface);
  overflow: hidden;
  border: var(--hairline);
  border-radius: var(--radius-xs);
}

.plate-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.plate-caption {
  max-width: var(--max-ch);
}

.plate-caption .caption-lead {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-2);
  display: block;
}

.plate-caption p {
  color: var(--ink-soft);
  font-size: var(--text-base);
  line-height: 1.65;
}

/* Visually Hidden Utility */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Desktop Sidebar breakpoint adjustments */
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}