/* ===== Silicon Forest Design System ===== */
/* "The Evergreen Editorial" — Understated Confidence */
/* Generated via Stitch MCP, adapted for accessibility */

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

:root {
  /* Primary — deep forest greens */
  --color-primary: #042419;
  --color-primary-container: #1b3a2d;

  /* Surfaces — warm green-tinted neutrals (not Stitch's blue-tinted defaults) */
  --color-bg: #f5f7f3;
  --color-surface: #edf2ed;
  --color-surface-high: #e3ebe3;
  --color-surface-lowest: #ffffff;

  /* Text — charcoal slate + warm gray */
  --color-text: #111d27;
  --color-text-muted: #414844;
  --color-text-on-dark: #ffffff;
  --color-text-on-dark-muted: rgba(255, 255, 255, 0.72);

  /* Accents — moss tones */
  --color-accent: #6b8f71;
  --color-accent-dim: #4a6b50;
  --color-tertiary: #02250f;

  /* Links — forest green (no bright blues) */
  --color-link: #1a5c38;
  --color-link-hover: #0d3f24;
  --color-link-on-dark: #accebc;
  --color-link-on-dark-hover: #c7ebd8;

  /* Focus — visible forest green ring */
  --color-focus: #2d7a4a;
  --color-focus-on-dark: #accebc;

  /* Borders — ghost borders only */
  --color-border-ghost: rgba(193, 200, 194, 0.15);

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 1.125rem;
  --tracking-tight: -0.02em;
  --tracking-wide: 0.05em;

  /* Layout */
  --max-width: 64rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 6rem;
  --space-xl: 8.5rem;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface-lowest);
  color: var(--color-primary);
  border-radius: 0 0 6px 6px;
  z-index: 100;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.skip-link:focus {
  top: 0;
}

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* ===== Typography ===== */
h1, h2, h3 {
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: var(--tracking-tight);
  font-weight: 700;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  color: var(--color-link-hover);
}

a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ===== Header / Hero ===== */
header[role="banner"] {
  padding: var(--space-xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
  color: var(--color-text-on-dark);
}

header h1 {
  color: var(--color-text-on-dark);
}

.tagline {
  font-size: clamp(0.875rem, 1.5vw, 1rem);
  color: var(--color-text-on-dark-muted);
  margin-top: var(--space-sm);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* ===== Sections ===== */
section {
  padding: var(--space-lg) 0;
}

/* Tonal layering — alternating surface tiers instead of borders */
section:nth-child(even) {
  background-color: var(--color-surface);
}

section p {
  max-width: 40rem;
  color: var(--color-text-muted);
}

/* ===== Ventures ===== */
.ventures-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.venture-card {
  padding: var(--space-md);
  border: 1px solid var(--color-border-ghost);
  border-radius: 6px;
  background: var(--color-surface-lowest);
  box-shadow: 0 20px 40px rgba(17, 29, 39, 0.06);
  transition: box-shadow 0.2s ease;
}

.venture-card:hover {
  box-shadow: 0 20px 40px rgba(17, 29, 39, 0.10);
}

.venture-card h3 {
  margin-bottom: var(--space-xs);
  color: var(--color-tertiary);
}

.venture-card p {
  margin-bottom: var(--space-sm);
}

.venture-card a {
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  font-size: 0.875rem;
  text-transform: uppercase;
}

/* ===== Leadership ===== */
.leader {
  max-width: 40rem;
}

.leader h3 {
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.leader-title {
  font-weight: 500;
  color: var(--color-accent-dim);
  margin-bottom: var(--space-sm);
  font-size: 0.9375rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.leader p:last-child {
  color: var(--color-text-muted);
}

/* ===== Contact ===== */
#contact {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
  color: var(--color-text-on-dark);
}

#contact h2 {
  color: var(--color-text-on-dark);
}

#contact p {
  color: var(--color-text-on-dark-muted);
}

#contact a {
  color: var(--color-link-on-dark);
  text-decoration-color: rgba(172, 206, 188, 0.6);
}

#contact a:hover {
  color: var(--color-link-on-dark-hover);
  text-decoration-color: var(--color-link-on-dark-hover);
}

#contact a:focus-visible {
  outline-color: var(--color-focus-on-dark);
}

#contact p + p {
  margin-top: var(--space-xs);
  font-size: 0.9375rem;
}

/* ===== Footer ===== */
footer[role="contentinfo"] {
  padding: var(--space-md) 0;
  background-color: var(--color-primary);
  color: var(--color-text-on-dark-muted);
  font-size: 0.875rem;
}

footer p + p {
  margin-top: 0.25rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  :root {
    --space-lg: 4rem;
    --space-xl: 5rem;
  }

  .container {
    padding-inline: var(--space-sm);
  }
}

@media (max-width: 375px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 4rem;
    --font-size-base: 1rem;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* ===== Print ===== */
@media print {
  header[role="banner"],
  #contact,
  footer[role="contentinfo"] {
    background: none;
    color: var(--color-text);
  }

  header h1,
  .tagline,
  #contact h2,
  #contact p,
  #contact a {
    color: var(--color-text);
  }
}