@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* colors */
  --color-primary: #8B6212;
  --color-primary-dark: #6B4C0E;
  --color-secondary: #216B00;
  --color-secondary-dark: #184F00;
  --color-text: #141414;
  --color-bg: #F5F5F5;
  --color-border: #D4D4D4;
  --color-white: #FFFFFF;
  --text-heading: var(--color-primary);
  --text-subheading: var(--color-secondary);
  --text-body: var(--color-text);
  --text-muted: #5C5C5C;
  --surface-page: var(--color-bg);
  --surface-card: var(--color-white);
  --border-default: var(--color-border);
  --link-color: var(--color-secondary);
  --link-hover: var(--color-secondary-dark);
  --focus-ring: var(--color-primary);

  /* typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;
  --fs-eyebrow: 0.8125rem;
  --fs-body-sm: 0.9375rem;
  --fs-body: 1.0625rem;
  --fs-h4: 1.375rem;
  --fs-h3: 1.75rem;
  --fs-h2: 2.5rem;
  --fs-h1: 3.5rem;
  --lh-tight: 1.1;
  --lh-snug: 1.3;
  --lh-body: 1.6;
  --ls-eyebrow: 0.08em;
  --ls-tight: -0.02em;

  /* spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 1px 2px rgba(20,20,20,0.05);
  --shadow-card-hover: 0 4px 12px rgba(20,20,20,0.08);
  --max-content-width: 1040px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

body {
  margin: 0;
  background: var(--color-bg);
  font-family: var(--font-sans);
  color: var(--text-body);
}

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

.wrap { max-width: var(--max-content-width); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* header / nav */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(245,245,245,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}
.site-header .wrap {
  padding-top: 16px;
  padding-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-name { font-weight: 700; color: var(--color-text); font-size: 15px; }

.nav-desktop { display: flex; gap: 24px; align-items: center; }
.nav-link {
  font-family: var(--font-sans);
  font-size: var(--fs-body-sm);
  font-weight: var(--fw-medium);
  color: var(--text-body);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color .15s ease, border-color .15s ease;
}
.nav-link:hover { color: var(--color-secondary); border-bottom-color: var(--color-secondary); }

.nav-toggle {
  background: none;
  border: none;
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--color-text); display: block; }

.nav-mobile {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--surface-page);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 24px 24px;
  display: none;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 8px 16px rgba(0,0,0,.06);
}
.nav-mobile.open { display: flex; }
.nav-mobile .nav-link { font-size: 17px; }
.nav-mobile-actions {
  display: flex;
  gap: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

/* buttons */
.btn {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn--sm { padding: 6px 12px; font-size: var(--fs-body-sm); }
.btn--md { padding: 10px 20px; font-size: var(--fs-body); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn--secondary { background: transparent; color: var(--color-secondary); border-color: var(--color-secondary); }
.btn--secondary:hover { background: var(--color-secondary); color: #fff; }
.btn--ghost { background: transparent; color: var(--text-body); border-color: transparent; }
.btn--ghost:hover { border-color: var(--color-border); }

/* badges */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid;
  background: transparent;
}
.badge--primary { color: var(--color-primary); border-color: var(--color-primary); }
.badge--secondary { color: var(--color-secondary); border-color: var(--color-secondary); }
.badge--neutral { color: var(--text-muted); border-color: var(--color-border); }

/* card */
.card {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }

/* section heading */
.section-heading { text-align: left; margin-bottom: var(--space-5); }
.section-heading .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--text-subheading);
  font-weight: var(--fw-medium);
  margin-bottom: var(--space-2);
}
.section-heading h2 {
  font-family: var(--font-sans);
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--text-heading);
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  margin: 0;
}

section { padding-top: 48px; padding-bottom: 48px; }

/* hero */
#home { padding-top: 96px; padding-bottom: 64px; }
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 16px;
}
.hero-title {
  font-weight: 800;
  font-size: 56px;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 12px;
}
.hero-sub { font-weight: 500; font-size: 22px; color: var(--color-secondary); margin-bottom: 20px; }
.hero-body { font-size: 18px; line-height: 1.6; color: var(--color-text); max-width: 640px; margin: 0 0 32px; }
.hero-ctas { display: flex; gap: 12px; margin-bottom: 28px; flex-wrap: wrap; }
.hero-tags { display: flex; gap: 8px; flex-wrap: wrap; }

/* grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 100%; margin-bottom: 32px; }

/* pillars */
.pillar-title { font-weight: 700; font-size: 18px; color: var(--color-primary); margin-bottom: 8px; }
.pillar-desc { font-size: 14px; color: var(--text-muted); line-height: 1.5; }

/* about */
.about-body { font-size: 16px; line-height: 1.7; color: var(--color-text); max-width: 720px; margin: 0; }

/* experience */
.jobs-list { display: flex; flex-direction: column; gap: 16px; }
.job-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 6px; }
.job-role { font-weight: 700; font-size: 17px; line-height: 1.3; color: var(--color-text); }
.job-period { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-muted); white-space: nowrap; }
.job-summary { font-size: 14.5px; line-height: 1.6; color: var(--color-text); margin: 0 0 12px; }
.job-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.job-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 3px 9px;
}

/* projects */
.project-slot {
  border: 1.5px dashed var(--color-border);
  border-radius: 8px;
  padding: 24px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #fff;
}
.project-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.project-plus { font-size: 13px; color: var(--color-border); text-align: center; }

/* certifications */
.certs-list { display: flex; gap: 12px; flex-wrap: wrap; }
.cert-item {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 16px;
  background: #fff;
  font-size: 14px;
  color: var(--color-text);
}

/* contact */
.contact-body { font-size: 17px; line-height: 1.7; color: var(--color-text); max-width: 600px; margin: 0 0 32px; }
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-decoration: none;
}
.contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.contact-value { font-weight: 600; color: var(--color-text); font-size: 15px; }

/* footer */
.site-footer { border-top: 1px solid var(--color-border); padding: 24px; }
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-brand { display: flex; align-items: center; gap: 8px; }

/* responsive */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: flex; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero-title { font-size: 34px; }
  .hero-sub { font-size: 18px; }
  #home { padding: 48px 20px 32px; }
}