/* ============ TOKENS ============ */
:root,
[data-theme='light'] {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  --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;
  --space-32: 8rem;

  --color-bg: #f6f5f1;
  --color-surface: #fbfaf7;
  --color-surface-offset: #edebe5;
  --color-border: #d6d3cb;
  --color-divider: #e3e0d9;
  --color-text: #15181c;
  --color-text-muted: #5f6368;
  --color-text-faint: #9a9da2;
  --color-text-inverse: #f6f5f1;
  --color-primary: #1f5f8b;
  --color-primary-hover: #174a6d;
  --color-primary-highlight: #d7e4ee;

  --font-display: 'Erode', Georgia, 'Times New Roman', serif;
  --font-body: 'Switzer', 'Helvetica Neue', Arial, sans-serif;

  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px rgba(40, 38, 30, 0.06);
  --content-wide: 1200px;
}

[data-theme='dark'] {
  --color-bg: #121417;
  --color-surface: #181b1f;
  --color-surface-offset: #1e2226;
  --color-border: #343940;
  --color-divider: #262a2f;
  --color-text: #dcdcd8;
  --color-text-muted: #9a9ea3;
  --color-text-faint: #666b71;
  --color-text-inverse: #121417;
  --color-primary: #6fa6d1;
  --color-primary-hover: #8dbadc;
  --color-primary-highlight: #22303c;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ============ BASE ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}
body {
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
}
img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}
h1,
h2,
h3 {
  text-wrap: balance;
  line-height: 1.12;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
}
p,
li {
  text-wrap: pretty;
  max-width: 68ch;
}
a {
  color: inherit;
}
button {
  cursor: pointer;
  background: none;
  border: none;
}
ul[role='list'],
ol[role='list'] {
  list-style: none;
}
::selection {
  background: var(--color-primary-highlight);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
a,
button,
input,
textarea,
select {
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ LAYOUT ============ */
.container {
  width: min(100% - 2 * var(--space-5), var(--content-wide));
  margin-inline: auto;
}
.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}
.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.section-head {
  max-width: 62ch;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}
.section-head h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.section-intro {
  color: var(--color-text-muted);
}
.eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

/* ============ HEADER ============ */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  background: var(--color-text);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  z-index: 100;
}
.skip-link:focus {
  top: var(--space-4);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.brand-mark {
  color: var(--color-text);
  flex: none;
}
.brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand-suffix {
  color: var(--color-text-muted);
  font-weight: 500;
}
.primary-nav {
  display: none;
  gap: var(--space-8);
  align-items: center;
}
.primary-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text-muted);
}
.primary-nav a:hover {
  color: var(--color-text);
}
.nav-cta {
  color: var(--color-text) !important;
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}
.nav-cta:hover {
  border-color: var(--color-text);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.theme-toggle,
.nav-toggle {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}
.theme-toggle:hover,
.nav-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.nav-toggle {
  flex-direction: column;
  gap: 6px;
  display: grid;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition);
}
.nav-toggle[aria-expanded='true'] span:first-child {
  transform: translateY(4px) rotate(45deg);
}
.nav-toggle[aria-expanded='true'] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}
.mobile-nav {
  display: grid;
  border-top: 1px solid var(--color-divider);
  background: var(--color-bg);
}
.mobile-nav[hidden] {
  display: none;
}
.mobile-nav a {
  padding: var(--space-4) var(--space-5);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid var(--color-divider);
}
@media (min-width: 900px) {
  .primary-nav {
    display: flex;
  }
  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }
}

/* ============ HERO ============ */
.hero {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32)) clamp(var(--space-12), 6vw, var(--space-24));
}
.hero-grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}
.hero h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
  max-width: 16ch;
}
.lede {
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.hero-figure {
  display: none;
  color: var(--color-text);
  width: 100%;
  max-width: 460px;
  margin-inline: auto;
}
.hero-art {
  width: 100%;
  aspect-ratio: 1;
}
@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
  .hero-figure {
    display: block;
  }
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  min-height: 46px;
}
.btn-primary {
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary);
}
.btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover {
  border-color: var(--color-text);
}

/* ============ STRIP ============ */
.strip {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.strip-grid {
  display: grid;
  gap: var(--space-8);
  padding-block: var(--space-10);
}
.strip-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
}
.strip-item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}
.strip-item strong {
  color: var(--color-text);
  font-weight: 600;
}
.strip-num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  line-height: 1.3;
}
@media (min-width: 760px) {
  .strip-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-12);
  }
}

/* ============ SERVICES ============ */
.services-grid {
  display: grid;
  gap: 1px;
  background: var(--color-divider);
  border: 1px solid var(--color-divider);
}
.service {
  background: var(--color-bg);
  padding: var(--space-8) var(--space-6);
  transition: background var(--transition);
}
.service:hover {
  background: var(--color-surface);
}
.service h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.service p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1000px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============ APPROACH ============ */
.approach-grid {
  display: grid;
  gap: var(--space-12);
}
.approach-copy h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.approach-copy p {
  color: var(--color-text-muted);
}
.steps {
  display: grid;
  gap: var(--space-8);
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-5);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.step-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1;
  color: var(--color-primary);
  min-width: 2ch;
}
.step h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 900px) {
  .approach-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-20);
  }
  .approach-copy {
    position: sticky;
    top: 100px;
    align-self: start;
  }
}

/* ============ INDUSTRIES ============ */
.industries {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.industries li {
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  max-width: none;
}
@media (min-width: 760px) {
  .industries {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============ ENGAGEMENT ============ */
.engagement-grid {
  display: grid;
  gap: var(--space-10);
}
.engagement-grid h2 {
  font-size: var(--text-xl);
}
.engagement-cards {
  display: grid;
  gap: var(--space-6);
}
.engagement-card {
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.engagement-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.engagement-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
@media (min-width: 900px) {
  .engagement-grid {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
  }
  .engagement-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============ LOCATIONS ============ */
.locations-grid {
  display: grid;
  gap: var(--space-6);
}
.location {
  font-style: normal;
  display: grid;
  gap: var(--space-3);
  padding: var(--space-8);
  border-top: 2px solid var(--color-text);
  background: var(--color-surface);
}
.location-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.location-lines {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.35;
}
@media (min-width: 640px) {
  .locations-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============ CONTACT ============ */
.contact {
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.contact .eyebrow {
  color: #8dbadc;
}
[data-theme='dark'] .contact {
  background: var(--color-surface);
  color: var(--color-text);
  border-top: 1px solid var(--color-divider);
}
.contact-grid {
  display: grid;
  gap: var(--space-12);
}
.contact-copy h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.contact-copy p {
  opacity: 0.8;
  margin-bottom: var(--space-6);
}
.contact-email {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.contact-email:hover {
  color: var(--color-primary);
}
.contact-form {
  display: grid;
  gap: var(--space-5);
}
.field {
  display: grid;
  gap: var(--space-2);
}
.field label {
  font-size: var(--text-sm);
  font-weight: 500;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: 1px solid rgba(150, 150, 150, 0.6);
  border-radius: var(--radius-sm);
  min-height: 46px;
}
.field textarea {
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--color-primary);
  outline: none;
}
.field select option {
  color: var(--color-text);
  background: var(--color-bg);
}
.contact .btn-primary {
  background: var(--color-text-inverse);
  color: var(--color-text);
  justify-self: start;
}
.contact .btn-primary:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
[data-theme='dark'] .contact .btn-primary {
  background: var(--color-text);
  color: var(--color-text-inverse);
}
.form-note {
  font-size: var(--text-xs);
  opacity: 0.65;
}
@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
  }
}

/* ============ FOOTER ============ */
.site-footer {
  padding-block: var(--space-12) var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}
.footer-brand .brand-text {
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-2);
}
.footer-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.footer-col a {
  text-decoration: none;
  color: var(--color-text);
}
.footer-col a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
}
@media (min-width: 760px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}