/* ==========================================================================
   Deep Foundations — heavy civil / pile driving, NY-NJ metro
   Design tokens
   ========================================================================== */

:root {
  /* color */
  --charcoal:      #1a1815;
  --charcoal-2:    #221f1b;
  --rust:          #c4551f;
  --rust-bright:   #de6a2e;
  --concrete:      #8b8680;
  --offwhite:      #f0ebe1;
  --earth:         #3d2e22;
  --safety-yellow: #e8b923;

  /* type */
  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "Archivo", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* scale */
  --step-0: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
  --step-1: clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --step-2: clamp(1.75rem, 1.5rem + 1vw, 2.5rem);
  --step-3: clamp(2.5rem, 1.9rem + 2.6vw, 4rem);
  --step-4: clamp(3.2rem, 2.2rem + 4.5vw, 6rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --space-6: 8rem;

  --max-w: 76rem;
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--charcoal);
  color: var(--offwhite);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0;
  line-height: 0.95;
}

p { margin: 0 0 var(--space-2); }

::selection {
  background: var(--rust);
  color: var(--offwhite);
}

:focus-visible {
  outline: 3px solid var(--safety-yellow);
  outline-offset: 3px;
}

.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--space-4); }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust-bright);
}

/* ==========================================================================
   Strata band — soil-cross-section motif used as section dividers
   ========================================================================== */

.strata {
  height: 14px;
  background:
    repeating-linear-gradient(
      90deg,
      var(--earth) 0 40px,
      var(--rust) 40px 41px,
      var(--earth) 41px 80px,
      var(--concrete) 80px 81px
    );
  background-size: 160px 100%;
  opacity: 0.7;
}

/* ==========================================================================
   Header / nav
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(26, 24, 21, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(240, 235, 225, 0.1);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
}

.wordmark {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1;
}

.wordmark .mark-main {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--offwhite);
}

.wordmark .mark-main span { color: var(--rust-bright); }

.wordmark .mark-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-top: 2px;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--offwhite);
  position: relative;
  padding-block: 4px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--rust-bright);
  transition: width 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  width: 100%;
}

.site-nav a[aria-current="page"] { color: var(--rust-bright); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--concrete);
  color: var(--offwhite);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 14px;
  cursor: pointer;
  min-height: 48px;
}

@media (max-width: 767px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    background: var(--charcoal-2);
    border-bottom: 1px solid rgba(240, 235, 225, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.is-open { max-height: 20rem; }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--space-2) var(--space-3) var(--space-3);
  }

  .site-nav a {
    display: block;
    padding: var(--space-2) 0;
    font-size: 1rem;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-6) var(--space-5);
  background:
    linear-gradient(180deg, var(--charcoal) 0%, var(--charcoal-2) 60%, var(--earth) 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(240,235,225,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(240,235,225,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  gap: var(--space-4);
  align-items: end;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.4fr 1fr;
  }
}

.hero h1 {
  font-size: var(--step-4);
  color: var(--offwhite);
  opacity: 0;
  transform: translateY(24px);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) 0.15s forwards;
}

.hero h1 em {
  font-style: normal;
  color: var(--rust-bright);
}

.hero-lede {
  max-width: 34ch;
  color: var(--concrete);
  font-size: var(--step-1);
  margin-top: var(--space-3);
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) 0.32s forwards;
}

.hero-cta {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) 0.48s forwards;
}

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

/* Pile driving signature animation */
.pile-rig {
  position: relative;
  width: 100%;
  max-width: 260px;
  margin-inline: auto;
  aspect-ratio: 3 / 4;
}

.pile-rig svg { width: 100%; height: 100%; overflow: visible; }

.pile-rig .pile {
  transform: translateY(-140px);
  animation: drive 1.6s cubic-bezier(0.6, 0, 0.85, 1) 0.9s forwards;
}

@keyframes drive {
  0%   { transform: translateY(-140px); }
  62%  { transform: translateY(0); }
  70%  { transform: translateY(-6px); }
  80%  { transform: translateY(2px); }
  100% { transform: translateY(0); }
}

.pile-rig .impact {
  opacity: 0;
  transform-origin: center;
  animation: impact 0.5s ease-out 1.9s forwards;
}

@keyframes impact {
  0%   { opacity: 0.9; transform: scaleX(0.3); }
  100% { opacity: 0; transform: scaleX(1.6); }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 1.75rem;
  min-height: 48px;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.btn-primary {
  background: var(--rust);
  color: var(--offwhite);
}

.btn-primary:hover {
  background: var(--rust-bright);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: rgba(240, 235, 225, 0.35);
  color: var(--offwhite);
}

.btn-ghost:hover {
  border-color: var(--safety-yellow);
  color: var(--safety-yellow);
}

/* ==========================================================================
   Sections
   ========================================================================== */

section.block {
  padding-block: var(--space-5);
}

.section-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  max-width: 40rem;
}

.section-head h2 { font-size: var(--step-3); }

/* Capability strip */
.capabilities {
  display: grid;
  gap: 1px;
  background: rgba(240, 235, 225, 0.12);
  border: 1px solid rgba(240, 235, 225, 0.12);
}

@media (min-width: 700px) {
  .capabilities { grid-template-columns: repeat(3, 1fr); }
}

.capability {
  background: var(--charcoal);
  padding: var(--space-4) var(--space-3);
}

.capability .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--rust-bright);
  letter-spacing: 0.1em;
}

.capability h3 {
  font-size: var(--step-2);
  margin-top: var(--space-2);
}

.capability p {
  color: var(--concrete);
  margin-top: var(--space-2);
  margin-bottom: 0;
}

/* Stat readout row */
.readouts {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 700px) {
  .readouts { grid-template-columns: repeat(4, 1fr); }
}

.readout {
  border-left: 2px solid var(--rust);
  padding-left: var(--space-2);
}

.readout .value {
  font-family: var(--font-mono);
  font-size: var(--step-2);
  color: var(--offwhite);
}

.readout .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--concrete);
}

/* Service cards — asymmetric technical listing */
.service-list {
  display: grid;
  gap: var(--space-3);
}

.service-card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--charcoal-2);
  border: 1px solid rgba(240, 235, 225, 0.1);
  border-left: 4px solid var(--rust);
  position: relative;
}

@media (min-width: 860px) {
  .service-card {
    grid-template-columns: 12rem 1fr;
    align-items: start;
  }
  .service-card:nth-of-type(even) { border-left-color: var(--safety-yellow); }
}

.service-card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rust-bright);
}

.service-card:nth-of-type(even) .tag { color: var(--safety-yellow); }

.service-card h3 {
  font-size: var(--step-2);
  margin-top: var(--space-1);
}

.service-card p {
  color: var(--concrete);
  margin: 0;
}

.spec-line {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--concrete);
}

.spec-line span strong { color: var(--offwhite); }

/* About: timeline / credentials */
.creds {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .creds { grid-template-columns: repeat(2, 1fr); }
}

.cred {
  padding: var(--space-3);
  border: 1px solid rgba(240, 235, 225, 0.12);
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}

.cred .icon {
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  color: var(--rust-bright);
}

.cred h3 {
  font-size: 1.05rem;
  text-transform: none;
  font-family: var(--font-body);
  font-weight: 700;
}

.cred p { color: var(--concrete); margin: 0.35rem 0 0; }

/* Quote / pull */
.pull {
  border-left: 4px solid var(--safety-yellow);
  padding-left: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--step-2);
  text-transform: none;
  color: var(--offwhite);
  max-width: 42rem;
}

/* Contact block */
.contact-block {
  background: var(--earth);
  padding-block: var(--space-5);
}

.contact-grid {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 800px) {
  .contact-grid { grid-template-columns: 1.2fr 1fr; }
}

.contact-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.contact-list a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
}

.contact-list a:hover { color: var(--safety-yellow); }

.contact-list .k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--concrete);
  margin-bottom: 2px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--charcoal-2);
  padding-block: var(--space-4);
  border-top: 1px solid rgba(240, 235, 225, 0.08);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
}

.footer-grid nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-3);
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.footer-grid nav a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--concrete);
}

.footer-grid nav a:hover { color: var(--rust-bright); }

.footer-fine {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--concrete);
}

/* ==========================================================================
   Page hero (interior pages, shorter than home hero)
   ========================================================================== */

.page-hero {
  padding-block: var(--space-5) var(--space-4);
  background: linear-gradient(180deg, var(--charcoal) 0%, var(--charcoal-2) 100%);
  position: relative;
}

.page-hero h1 {
  font-size: var(--step-3);
  color: var(--offwhite);
}

.page-hero .hero-lede { animation: none; opacity: 1; transform: none; margin-top: var(--space-2); }
.page-hero h1 { animation: none; opacity: 1; transform: none; }