:root {
  color-scheme: dark;
  --black: #0a0a0a;
  --charcoal: #1a1a1a;
  --dark-gray: #222222;
  --mid-gray: #333333;
  --steel: #555555;
  --silver: #aaaaaa;
  --light-silver: #cccccc;
  --white: #f0f0f0;
  --accent: #1e7ad4;
  --accent-dark: #1a56b8;
  --accent-glow: rgba(30, 122, 212, 0.3);
  --danger: #ffb4a9;
  --success: #b8e8c7;
  --font-heading: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Barlow", Arial, sans-serif;
  --content: 1180px;
  --header-height: 152px;
  --radius: 4px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.3);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 280px;
  background: var(--black);
  color: var(--light-silver);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
}

body.nav-open { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-180%);
  padding: 0.75rem 1rem;
  background: var(--white);
  color: var(--black);
  font-weight: 700;
}

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

:focus-visible {
  outline: 3px solid #72b9ff;
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 2.5rem), var(--content));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 34px 0 auto;
  background: rgba(10, 10, 10, 0.97);
  border-bottom: 1px solid var(--mid-gray);
  box-shadow: 0 5px 24px rgba(0, 0, 0, 0.35);
}

.portfolio-bar { position: fixed; z-index: 101; inset: 0 0 auto; min-height: 34px; display: flex; align-items: center; border-bottom: 1px solid var(--mid-gray); background: #050505; color: var(--silver); font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; }
.portfolio-bar .container { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.portfolio-bar a { min-height: 34px; display: inline-flex; align-items: center; color: #86c5ff; font-weight: 600; text-underline-offset: .2em; }

.brand-row {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  text-decoration: none;
  font-family: var(--font-heading);
  letter-spacing: 0.045em;
  line-height: 1;
}

.brand-tsr { color: var(--white); font-size: clamp(2rem, 5vw, 2.8rem); font-weight: 700; }
.brand-turbo { color: var(--accent); font-size: clamp(1.65rem, 4vw, 2.25rem); font-weight: 500; }
.brand-tagline { margin: 0; color: var(--silver); font-size: 0.84rem; letter-spacing: 0.09em; text-transform: uppercase; }

.navbar { border-top: 1px solid #252525; background: #111; }
.navbar .container { display: flex; justify-content: flex-end; }
.nav-list { display: flex; list-style: none; gap: 0.35rem; margin: 0; padding: 0; }
.nav-link {
  display: block;
  min-height: 44px;
  padding: 0.65rem 1rem;
  border-bottom: 3px solid transparent;
  color: var(--light-silver);
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

.nav-link:hover,
.nav-link[aria-current="page"] { color: var(--white); border-bottom-color: var(--accent); background: rgba(30, 122, 212, 0.08); }

.nav-toggle {
  display: none;
  min-width: 48px;
  min-height: 48px;
  padding: 0.65rem;
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  background: var(--charcoal);
  color: var(--white);
  cursor: pointer;
}

.nav-toggle-lines { display: grid; gap: 5px; }
.nav-toggle-line { display: block; width: 24px; height: 2px; background: currentColor; transition: transform 180ms ease, opacity 180ms ease; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

main { padding-top: var(--header-height); }

.hero {
  position: relative;
  min-height: clamp(570px, 78vh, 820px);
  display: grid;
  place-items: center;
  isolation: isolate;
  overflow: hidden;
  background: #0d0d0d url("../images/turbo5.jpg") center 42% / cover no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(90deg, rgba(5,5,5,.94) 0%, rgba(5,5,5,.72) 48%, rgba(5,5,5,.46) 100%), linear-gradient(0deg, var(--black), transparent 35%);
}

.hero-content { width: min(calc(100% - 2.5rem), var(--content)); margin-inline: auto; }
.hero-kicker, .eyebrow { margin: 0 0 0.8rem; color: #86c5ff; font-family: var(--font-heading); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; }
.hero-title { max-width: 880px; margin: 0; color: var(--white); font-family: var(--font-heading); font-size: clamp(3rem, 8vw, 6.7rem); line-height: 0.98; letter-spacing: -0.02em; text-transform: uppercase; text-shadow: 0 5px 30px #000; }
.hero-tagline { margin: 1.5rem 0 2rem; color: var(--white); font-size: clamp(1rem, 2vw, 1.35rem); letter-spacing: 0.06em; }
.text-accent { color: var(--accent); }

.button-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { border-color: var(--accent-dark); background: var(--accent-dark); color: #fff; }
.btn-primary:hover { border-color: #154a9d; background: #154a9d; }
.btn-outline { background: rgba(10,10,10,.55); color: var(--white); }
.btn-outline:hover { background: var(--accent); }
.btn-large { min-height: 54px; padding-inline: 1.8rem; }

.section { padding: clamp(4.5rem, 8vw, 7rem) 0; }
.surface { background: var(--charcoal); }
.section-title { margin: 0 0 2.2rem; color: var(--white); font-family: var(--font-heading); font-size: clamp(2.25rem, 5vw, 3.65rem); line-height: 1.08; text-transform: uppercase; }
.section-intro { max-width: 760px; margin: -1rem 0 2.5rem; color: var(--silver); font-size: 1.12rem; }

.service-summary-grid, .services-grid, .applications-grid, .project-grid, .gallery-grid, .quick-grid { display: grid; gap: 1.25rem; }
.service-summary-grid { grid-template-columns: repeat(3, 1fr); }
.services-grid { grid-template-columns: repeat(3, 1fr); }
.applications-grid { grid-template-columns: repeat(6, 1fr); }
.project-grid { grid-template-columns: repeat(4, 1fr); }
.gallery-grid { grid-template-columns: repeat(3, 1fr); }
.quick-grid { grid-template-columns: repeat(3, 1fr); }

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--mid-gray);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #242424, #171717);
  box-shadow: var(--shadow);
}

.service-card { padding: 1.8rem; }
.service-icon { color: var(--accent); font-family: var(--font-heading); font-size: 2.2rem; line-height: 1; }
.service-card h3, .application-card h3, .quick-card h3 { margin: 0.8rem 0 0.5rem; color: var(--white); font-family: var(--font-heading); font-size: 1.45rem; text-transform: uppercase; }
.service-card p, .application-card p, .quick-card p { margin: 0; color: var(--silver); }
.service-list { padding-left: 1.2rem; color: var(--silver); }
.service-list li::marker { color: var(--accent); }

.about-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.about-image { position: relative; }
.about-image::after { content: ""; position: absolute; inset: 1rem -1rem -1rem 1rem; z-index: -1; border: 2px solid var(--accent); }
.about-image img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; filter: contrast(1.04) saturate(.88); }
.about-copy { font-size: 1.08rem; }
.about-copy p:first-child { color: var(--white); font-size: 1.25rem; }

.project-card img, .gallery-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 250ms ease; }
.project-card:hover img, .gallery-card:hover img { transform: scale(1.025); }
.card-body { padding: 1.2rem; }
.card-body h3 { margin: 0 0 0.45rem; color: var(--white); font-family: var(--font-heading); font-size: 1.25rem; text-transform: uppercase; }
.card-body p { margin: 0; color: var(--silver); }
.tag { display: inline-block; margin-bottom: 0.65rem; padding: 0.2rem 0.5rem; background: rgba(30,122,212,.16); color: #89c9ff; font-family: var(--font-heading); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.section-action { margin-top: 2rem; text-align: center; }

.cta-panel { padding: clamp(2rem, 5vw, 4rem); border: 1px solid #315d87; background: radial-gradient(circle at 85% 10%, var(--accent-glow), transparent 36%), var(--charcoal); text-align: center; }
.cta-panel h2 { margin: 0 0 0.8rem; color: var(--white); font-family: var(--font-heading); font-size: clamp(2rem, 5vw, 3.25rem); text-transform: uppercase; }
.cta-panel p { max-width: 760px; margin: 0 auto 1.6rem; }

.page-hero { padding: clamp(5rem, 10vw, 8rem) 0; border-bottom: 1px solid var(--mid-gray); background: radial-gradient(circle at 80% 30%, rgba(30,122,212,.24), transparent 31%), linear-gradient(135deg, #181818, #090909); }
.page-hero h1 { margin: 0; color: var(--white); font-family: var(--font-heading); font-size: clamp(3rem, 8vw, 5.6rem); line-height: 1; text-transform: uppercase; }
.page-hero p { max-width: 800px; margin: 1rem 0 0; color: var(--light-silver); font-size: 1.15rem; }

.process-list { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; padding: 0; list-style: none; counter-reset: process; }
.process-step { position: relative; padding: 1.4rem 1rem; border-top: 3px solid var(--accent); background: var(--dark-gray); counter-increment: process; }
.process-step::before { content: counter(process, decimal-leading-zero); display: block; color: var(--accent); font-family: var(--font-heading); font-size: 1.6rem; font-weight: 700; }
.process-step h3 { margin: .5rem 0; color: var(--white); font-family: var(--font-heading); font-size: 1.15rem; text-transform: uppercase; }
.process-step p { margin: 0; color: var(--silver); font-size: .9rem; }
.application-card { padding: 1.25rem; text-align: center; }

.filter-toolbar { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 2rem; }
.filter-btn { min-height: 44px; padding: .55rem .9rem; border: 1px solid var(--steel); background: var(--charcoal); color: var(--light-silver); font-family: var(--font-heading); text-transform: uppercase; cursor: pointer; }
.filter-btn:hover, .filter-btn[aria-pressed="true"] { border-color: var(--accent-dark); background: var(--accent-dark); color: white; }
.gallery-card[hidden] { display: none; }
.gallery-status { min-height: 1.5rem; margin: 0 0 1rem; color: var(--silver); }

.form-layout { display: grid; grid-template-columns: minmax(0, 2fr) minmax(260px, .8fr); gap: 2rem; align-items: start; }
.showcase-form { padding: clamp(1.2rem, 3vw, 2rem); border: 1px solid var(--mid-gray); background: var(--charcoal); box-shadow: var(--shadow); }
.form-section + .form-section { margin-top: 2.2rem; padding-top: 2rem; border-top: 1px solid var(--mid-gray); }
.form-section h2 { margin: 0 0 1.3rem; color: var(--white); font-family: var(--font-heading); font-size: 1.65rem; text-transform: uppercase; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.form-group { min-width: 0; }
.form-group.full { grid-column: 1 / -1; }
.form-group label, .field-label { display: block; margin-bottom: .4rem; color: var(--white); font-weight: 600; }
.required { color: #9ed2ff; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  min-height: 48px;
  padding: .7rem .8rem;
  border: 1px solid var(--steel);
  border-radius: 2px;
  background: #101010;
  color: var(--white);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); outline: none; }
.form-group input[aria-invalid="true"], .form-group textarea[aria-invalid="true"] { border-color: var(--danger); }
.field-hint { margin: .45rem 0 0; color: var(--silver); font-size: .9rem; }
.error-message { margin: .35rem 0 0; color: var(--danger); font-weight: 600; }
.choice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .65rem; }
.choice-fieldset { margin: 0; padding: 0; border: 0; }
.choice-card { display: flex; min-height: 48px; align-items: center; gap: .55rem; padding: .65rem .8rem; border: 1px solid var(--steel); background: #151515; color: var(--light-silver); cursor: pointer; }
.choice-card:has(input:checked) { border-color: var(--accent); background: rgba(30,122,212,.12); color: var(--white); }
.choice-card input { accent-color: var(--accent); }
.file-picker { padding: 1rem; border: 1px dashed var(--steel); background: #111; }
.file-summary { margin: .65rem 0 0; color: #9ed2ff; }
.form-note { margin: 1.5rem 0; padding: 1rem; border-left: 3px solid var(--accent); background: rgba(30,122,212,.08); }
.form-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.form-confirmation { margin-top: 1.25rem; padding: 1.1rem; border: 1px solid #4c8b64; background: rgba(49, 113, 72, .18); color: var(--success); }
.form-confirmation:focus { outline-color: var(--success); }

.sidebar-panel { position: sticky; top: calc(var(--header-height) + 1rem); border: 1px solid var(--mid-gray); border-top: 3px solid var(--accent); background: var(--dark-gray); }
.sidebar-section { padding: 1.4rem; }
.sidebar-section + .sidebar-section { border-top: 1px solid var(--mid-gray); }
.sidebar-section h2, .sidebar-section h3 { margin: 0 0 .8rem; color: var(--white); font-family: var(--font-heading); text-transform: uppercase; }
.sidebar-section ul, .sidebar-section ol { margin: 0; padding-left: 1.25rem; }

.site-footer { border-top: 1px solid var(--mid-gray); background: #070707; }
.footer-main { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 2rem; padding: 3rem 0; }
.footer-brand p { max-width: 360px; color: var(--silver); }
.footer-col h2 { margin: 0 0 .8rem; color: var(--white); font-family: var(--font-heading); font-size: 1.1rem; text-transform: uppercase; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links a { display: inline-block; min-height: 36px; color: var(--light-silver); }
.footer-links a:hover { color: #86c5ff; }
.portfolio-notice { padding: 1rem 0; border-top: 1px solid var(--mid-gray); color: var(--silver); font-size: .9rem; text-align: center; }

@media (max-width: 1000px) {
  .services-grid, .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .applications-grid { grid-template-columns: repeat(3, 1fr); }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(3, 1fr); }
  .form-layout { grid-template-columns: 1fr; }
  .sidebar-panel { position: static; }
}

@media (max-width: 760px) {
  :root { --header-height: 109px; }
  .brand-row { min-height: 74px; }
  .brand-tagline { display: none; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .navbar { border: 0; }
  .navbar .container { width: 100%; }
  .nav-list { position: fixed; inset: var(--header-height) 0 auto; display: none; max-height: calc(100vh - var(--header-height)); overflow-y: auto; padding: .75rem 1.25rem 1.25rem; border-top: 1px solid var(--mid-gray); background: #0d0d0d; box-shadow: var(--shadow); }
  .nav-list.is-open { display: block; }
  .nav-link { padding: .9rem 1rem; border-bottom: 1px solid var(--mid-gray); }
  .hero { min-height: calc(100svh - var(--header-height)); background-position: 56% center; }
  .hero::before { background: linear-gradient(90deg, rgba(5,5,5,.9), rgba(5,5,5,.68)); }
  .service-summary-grid, .services-grid, .about-grid, .quick-grid, .footer-main { grid-template-columns: 1fr; }
  .about-image::after { inset: .65rem -.65rem -.65rem .65rem; }
  .form-grid, .choice-grid { grid-template-columns: 1fr; }
  .footer-main { gap: 1.5rem; }
}

@media (max-width: 520px) {
  .portfolio-bar span { display: none; }
  .portfolio-bar .container { justify-content: flex-end; }
  .container, .hero-content { width: min(calc(100% - 1.5rem), var(--content)); }
  .section { padding: 3.5rem 0; }
  .hero-title { font-size: clamp(2.55rem, 15vw, 4rem); }
  .button-row .btn { width: 100%; }
  .applications-grid, .project-grid, .gallery-grid, .process-list { grid-template-columns: 1fr; }
  .filter-toolbar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .filter-btn { font-size: .86rem; }
  .showcase-form { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .portfolio-bar, .site-header, .button-row, .filter-toolbar, .site-footer { display: none; }
  main { padding-top: 0; }
  body { background: white; color: black; }
}