/* KJFuller.com — one-page professional profile */

:root {
  --color-bg: #f7f9f8;
  --color-surface: #ffffff;
  --color-surface-soft: #eef5f7;
  --color-text: #1f2933;
  --color-muted: #64748b;
  --color-primary: #315f72;
  --color-primary-dark: #244957;
  --color-accent: #c89b5c;
  --color-accent-soft: #f5eddf;
  --color-border: #dbe4e7;
  --shadow-soft: 0 18px 45px rgba(31, 41, 51, 0.08);
  --shadow-card: 0 10px 30px rgba(31, 41, 51, 0.07);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1120px;
  --header-height: 82px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: Inter, Roboto, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-weight: 400;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  z-index: 999;
  transform: translateY(-150%);
  background: var(--color-primary-dark);
  color: #fff;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 249, 248, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  border-color: var(--color-border);
  box-shadow: 0 12px 28px rgba(31, 41, 51, 0.06);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: min-height 180ms ease;
}

.site-header.is-scrolled .header-inner {
  min-height: 66px;
}

.brand {
  text-decoration: none;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  color: var(--color-primary-dark);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.primary-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  background: var(--color-surface-soft);
  color: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-primary-dark);
  border-radius: 999px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.section {
  padding: clamp(4.5rem, 8vw, 7rem) 0;
}

.hero {
  padding-top: clamp(3.5rem, 7vw, 6rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.7rem;
  color: var(--color-primary);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(2.35rem, 5.1vw, 4.55rem);
  max-width: 13ch;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

h3 {
  font-size: 1.35rem;
}

.hero-lede {
  max-width: 650px;
  margin: 1.35rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 0.82rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 14px 24px rgba(49, 95, 114, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--color-primary-dark);
}

.button-secondary {
  color: var(--color-primary-dark);
  background: var(--color-surface);
  border-color: var(--color-border);
}

.hero-photo-wrap {
  position: relative;
  padding: 0.7rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(238, 245, 247, 0.95));
  box-shadow: var(--shadow-soft);
}

.hero-photo-wrap::after {
  content: "";
  position: absolute;
  inset: auto -1rem -1rem auto;
  width: 45%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--color-accent-soft);
  z-index: -1;
}

.hero-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.content-block p,
.section-heading p,
.service-card p,
.project-card p,
.interest-list p,
.contact-card p {
  color: var(--color-muted);
}

.content-block p:first-child {
  margin-top: 0;
}

.about-section,
.projects-section {
  background: var(--color-surface);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-card,
.project-card,
.interest-list article,
.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.service-card,
.project-card,
.interest-list article {
  padding: 1.45rem;
}

.services-section .service-card {
  background: linear-gradient(180deg, #fff, #fbfdfd);
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 1.2rem;
  border-radius: 999px;
  color: var(--color-primary-dark);
  background: var(--color-surface-soft);
  font-weight: 600;
  font-size: 0.85rem;
}

.service-card ul {
  padding-left: 1.1rem;
  margin: 1rem 0 0;
  color: var(--color-muted);
}

.service-card li + li {
  margin-top: 0.35rem;
}

.experience-section {
  background:
    radial-gradient(circle at top left, rgba(200, 155, 92, 0.16), transparent 35%),
    var(--color-surface-soft);
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.impact-item {
  padding: 1.4rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(219, 228, 231, 0.9);
}

.impact-item strong {
  display: block;
  color: var(--color-primary-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.65rem;
}

.impact-item span {
  color: var(--color-muted);
}

.project-card {
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.project-card a {
  display: inline-flex;
  margin-top: 0.7rem;
  color: var(--color-primary);
  font-weight: 600;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.interest-list {
  display: grid;
  gap: 1rem;
}

.contact-section {
  background:
    linear-gradient(135deg, rgba(49, 95, 114, 0.08), rgba(200, 155, 92, 0.11)),
    var(--color-bg);
}

.contact-card {
  max-width: 880px;
  padding: clamp(2rem, 5vw, 3.25rem);
  text-align: center;
}

.contact-card .section-kicker {
  margin-bottom: 0.9rem;
}

.contact-actions {
  justify-content: center;
}

.site-footer {
  padding: 2.5rem 0;
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.76);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-quote {
  margin: 0;
  color: #fff;
  font-weight: 500;
}

.footer-inner p {
  margin: 0;
}

.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: var(--color-primary);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease, background 180ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--color-primary-dark);
}

@media (max-width: 900px) {
  :root {
    --header-height: 72px;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.5rem);
    display: grid;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    transform-origin: top;
    transform: scaleY(0.96);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .primary-nav.is-open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .primary-nav a {
    padding: 0.85rem 1rem;
  }

  .hero-grid,
  .two-column {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: 12ch;
  }

  .hero-photo-wrap {
    max-width: 480px;
  }

  .card-grid.three,
  .impact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    display: block;
    text-align: center;
  }

  .footer-inner p + p {
    margin-top: 0.75rem;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 1.25rem, var(--container));
  }

  .section {
    padding: 4rem 0;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-actions,
  .contact-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .card-grid.three,
  .impact-grid {
    grid-template-columns: 1fr;
  }

  .service-card,
  .project-card,
  .interest-list article {
    padding: 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}