:root {
  --ink: #0b1219;
  --ink-soft: #16202b;
  --paper: #ffffff;
  --paper-deep: #eef1f4;
  --muted: #5a6570;
  --line: #d7dde3;
  --accent: #1a5f7a;
  --accent-warm: #b4532a;
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

::selection {
  background: var(--ink);
  color: var(--paper);
}

:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.75rem;
}

.container {
  width: min(1280px, 100%);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

@media (min-width: 768px) {
  .container {
    padding-inline: 2rem;
  }
}

@media (min-width: 1200px) {
  .container {
    padding-inline: 2.5rem;
  }
}

.mono {
  font-family: var(--font-mono);
}

.muted {
  color: var(--muted);
}

.light {
  color: #f4f6f8;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.eyebrow.light {
  color: rgba(244, 246, 248, 0.72);
}

.lead,
.hero-fluor__lead {
  max-width: 38rem;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--muted);
}

.hero-fluor__lead {
  color: rgba(244, 246, 248, 0.86);
}

h1,
h2,
h3 {
  font-family: var(--font-sans);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  max-width: 14ch;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
}

h3 {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.5rem;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

.brand-text,
.custom-logo-link img,
.brand-logo {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.custom-logo-link img,
.brand-logo {
  height: 5rem;
  width: auto;
  max-width: min(160px, 42vw);
  object-fit: contain;
  display: block;
  background: #05070a;
  padding: 0.15rem 0.3rem;
  border-radius: 0.25rem;
}

.brand-logo--footer {
  height: 5.5rem;
  max-width: 140px;
}

.brand--footer {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.nav-toggle {
  display: inline-flex;
  border: 0;
  background: transparent;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
}

.site-nav {
  display: none;
}

.site-nav.is-open {
  display: block;
  position: absolute;
  inset-inline: 0;
  top: 100%;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 1.25rem;
}

.nav-list,
.footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nav-list a,
.footer-nav a {
  font-size: 12px;
  letter-spacing: 0.04em;
  font-weight: 500;
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: block;
    position: static;
    border: 0;
    padding: 0;
    background: transparent;
  }

  .nav-list {
    flex-direction: row;
    gap: 1.75rem;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn-solid {
  background: var(--ink);
  color: var(--paper);
  padding: 0.85rem 1.2rem;
}

.btn-solid:hover {
  background: var(--accent);
  color: var(--paper);
}

.btn-light {
  background: var(--paper);
  color: var(--ink);
  padding: 0.85rem 1.2rem;
}

.btn-light:hover {
  background: var(--accent);
  color: var(--paper);
}

.btn-ghost,
.btn-ghost-light {
  border: 1px solid currentColor;
  padding: 0.85rem 1.2rem;
}

.btn-ghost-light {
  color: #f4f6f8;
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.btn-line {
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.15rem;
}

.btn-line.light-line {
  color: rgba(244, 246, 248, 0.92);
}

.btn-line.light-line:hover {
  color: #fff;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.75rem;
}

/* Hybrid hero — Fluor photo + Salas O'Brien dual headline */
.hero-hybrid {
  position: relative;
  min-height: min(92vh, 860px);
  display: flex;
  align-items: flex-end;
  color: #f4f6f8;
  overflow: hidden;
  background: var(--ink);
}

.hero-hybrid__content {
  position: relative;
  padding-block: 6rem 4rem;
  width: 100%;
}

.hero-hybrid__title {
  font-size: clamp(2.5rem, 6.5vw, 4.5rem);
  max-width: 16ch;
  margin-bottom: 0.75rem;
}

.hero-hybrid__subtitle {
  max-width: 42rem;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.55;
  font-weight: 400;
  color: rgba(244, 246, 248, 0.88);
  margin: 0;
}

.hero-hybrid__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-hybrid__nav + .cta-row {
  margin-top: 1.25rem;
}

/* Fluor-like full-bleed hero (legacy class for media layers) */
.hero-fluor {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  align-items: flex-end;
  color: #f4f6f8;
  overflow: hidden;
  background: var(--ink);
}

.hero-fluor__media {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #1a2734, #0b1219 70%);
  overflow: hidden;
}

.hero-fluor__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-fluor__shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 18, 25, 0.25) 0%, rgba(11, 18, 25, 0.78) 100%);
}

.hero-fluor__content {
  position: relative;
  padding-block: 6rem 4rem;
  width: 100%;
}

.hero-fluor__meta {
  margin-top: 2rem;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.7;
}

.section {
  padding-block: 4.5rem;
  border-bottom: 1px solid var(--line);
}

.section-tight {
  padding-block: 3.5rem;
}

.section-ink {
  background: var(--ink);
  color: #f4f6f8;
  border-bottom: 0;
}

.section-muted {
  background: var(--paper-deep);
}

.section-cta-fluor {
  background: var(--ink-soft);
  color: #f4f6f8;
  border-bottom: 0;
}

.page-hero {
  padding-top: 2.5rem;
}

.section-header {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-header--row {
  max-width: none;
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.section-header h2 {
  margin-top: 0.25rem;
}

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

@media (min-width: 900px) {
  .lines-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.line-panel {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
}

.line-panel__media,
.expertise-item__media,
.project-strip__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #243040;
}

.line-panel__media img,
.expertise-item__media img,
.project-strip__media img,
.media-plane img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.line-panel:hover img,
.expertise-item:hover img,
.project-strip__item:hover img {
  transform: scale(1.04);
}

.line-panel__fallback {
  width: 100%;
  height: 100%;
  min-height: 12rem;
  background:
    linear-gradient(135deg, #2a3a4c, #121a22),
    repeating-linear-gradient(90deg, transparent, transparent 31px, rgba(255, 255, 255, 0.04) 32px);
}

.line-panel__label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.1rem 1.2rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.72));
  font-size: 1.05rem;
  font-weight: 500;
}

.expertise-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 900px) {
  .expertise-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.expertise-item {
  display: block;
  color: inherit;
}

.expertise-item h3 {
  margin-top: 0.85rem;
}

.about-split {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .about-split {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
  }
}

.about-copy p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 40rem;
}

.project-strip {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .project-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-strip__body {
  padding-top: 1rem;
}

.project-strip__body .btn {
  margin-top: 0.85rem;
}

/* Salas O'Brien — services carousel */
.section-services-carousel {
  background: var(--paper-deep);
}

.carousel-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.carousel-counter {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  min-width: 4rem;
}

.carousel-btn {
  border: 1px solid var(--line);
  background: var(--paper);
  width: 2.5rem;
  height: 2.5rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.carousel-btn:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.services-carousel {
  position: relative;
  min-height: 14rem;
}

.service-slide {
  display: none;
  max-width: 42rem;
  padding-top: 0.5rem;
}

.service-slide.is-active {
  display: block;
}

.service-slide__index {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.service-slide h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.85rem;
}

.service-slide p {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 38rem;
}

/* Salas O'Brien — spotlight */
.section-spotlight {
  background: var(--paper);
}

.spotlight-split {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 900px) {
  .spotlight-split {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: start;
  }
}

.spotlight-copy p,
.spotlight-aside .spotlight-quote {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.spotlight-copy p {
  margin: 0 0 1.25rem;
  max-width: 36rem;
}

.spotlight-quote {
  margin: 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line);
  font-style: normal;
}

/* Salas O'Brien — featured projects strip */
.featured-projects {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .featured-projects {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .featured-projects {
    grid-template-columns: repeat(3, 1fr);
  }
}

.featured-project a {
  display: block;
  height: 100%;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: border-color 0.2s ease;
}

.featured-project a:hover {
  border-color: var(--ink);
}

.featured-project__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #243040;
}

.featured-project__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.featured-project:hover img {
  transform: scale(1.04);
}

.featured-project__body {
  padding: 1.15rem 1.25rem 1.35rem;
}

.featured-project__client {
  margin: 0 0 0.35rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.featured-project__body h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  line-height: 1.35;
}

.featured-project__location {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Salas O'Brien — mission block */
.section-mission {
  background: var(--ink);
  color: #f4f6f8;
  border-bottom: 0;
}

.mission-block {
  max-width: 48rem;
}

.mission-block h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.mission-block p {
  margin: 0 0 1.75rem;
  color: rgba(244, 246, 248, 0.78);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 40rem;
}

.section-mission .btn-solid:hover {
  background: var(--accent);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.metrics--fluor {
  border: 0;
}

@media (min-width: 900px) {
  .metrics {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.metric-value {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 500;
}

.metric-label {
  margin-top: 0.4rem;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.cta-split {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .cta-split {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

/* Inner pages keep shared utilities */
.service-list {
  display: grid;
}

.service-row {
  display: grid;
  gap: 1rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line);
}

@media (min-width: 768px) {
  .service-row {
    grid-template-columns: 72px 1fr auto;
    align-items: start;
    gap: 2rem;
  }
}

.project-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card .media-plane,
.media-plane {
  background: var(--paper-deep);
  overflow: hidden;
}

.ratio-4-3 {
  aspect-ratio: 4 / 3;
}

.media-wide {
  margin-block: 2rem;
  aspect-ratio: 16 / 10;
}

.media-bleed {
  aspect-ratio: 16 / 8;
  width: 100%;
}

.media-fallback {
  min-height: 14rem;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1.25rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-meta {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.project-hero {
  background: var(--paper-deep);
  border-bottom: 1px solid var(--line);
  padding-top: 2.5rem;
}

.project-hero .container {
  padding-bottom: 2.5rem;
}

.stats-row,
.meta-list {
  margin: 0 0 2rem;
  display: grid;
  gap: 1rem;
}

.stats-row {
  grid-template-columns: repeat(2, 1fr);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 900px) {
  .stats-row {
    grid-template-columns: repeat(4, 1fr);
  }
}

.meta-list > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.meta-list dt,
.stats-row dt {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-list dd,
.stats-row dd {
  margin: 0.35rem 0 0;
}

.prose {
  max-width: 42rem;
  line-height: 1.8;
}

.prose p {
  margin: 0 0 1rem;
}

.breadcrumbs {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.contact-layout {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

@media (min-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-form {
  display: grid;
  gap: 1.15rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input,
.field textarea {
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  padding: 0.55rem 0;
  font: inherit;
  width: 100%;
}

.field input:focus,
.field textarea:focus {
  outline: none;
}

.form-success,
.form-error {
  border: 1px solid var(--line);
  padding: 1.25rem;
}

.form-error {
  color: var(--accent);
}

.site-footer {
  background: var(--ink);
  color: rgba(244, 246, 248, 0.78);
  border-top: 0;
}

.site-footer a:hover {
  color: #fff;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  padding-block: 3.5rem;
}

@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.site-footer .brand-text {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-block: 1.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.whatsapp-fab {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 40;
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 0.7rem 0.95rem;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.whatsapp-fab:hover {
  background: var(--ink);
  color: var(--paper);
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}