/* ============================================================
   EngraveRace — Precision Computer Systems Design & Engineering
   Palette: Carbon-Black / Racing-Vermilion / Volt-Teal
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --color-base: #0B0E12;
  --color-darker: #07090C;
  --color-surface: #161B22;
  --color-surface-light: #1D242E;
  --color-text: #EEF2F5;
  --color-muted: #8FA3B3;
  --color-accent: #FF3B2F;
  --color-accent-bright: #FF5A4F;
  --color-accent-deep: #D92820;
  --color-secondary: #19E3C1;
  --color-border: rgba(238,242,245,0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  --header-height: 72px;
}

/* ---------- Reset / Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  background: var(--color-base);
  color: var(--color-text);
  min-height: 100vh;
}

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

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

ul, ol {
  list-style: none;
}

/* ---------- Skip Link ---------- */
.skip-to-main {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  background: var(--color-accent);
  color: #EEF2F5;
  padding: 12px 24px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 14px;
  transition: top 0.2s;
}

.skip-to-main:focus {
  top: 16px;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Site Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11,14,18,0.92);
  border-bottom: 1px solid var(--color-border);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
}

/* ---------- Logo ---------- */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: #EEF2F5;
  flex-shrink: 0;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  color: #EEF2F5;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1px;
  border-radius: 6px;
}

.logo-text {
  white-space: nowrap;
}

/* ---------- Main Navigation ---------- */
.nav-toggle-input {
  display: none;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #EEF2F5;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle-input:checked ~ .nav-toggle-label .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle-input:checked ~ .nav-toggle-label .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle-input:checked ~ .nav-toggle-label .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted);
  transition: color 0.2s;
  position: relative;
}

.nav-link:hover,
.nav-link:focus {
  color: #EEF2F5;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.25s;
}

.nav-link:hover::after,
.nav-link:focus::after {
  width: 100%;
}

/* ---------- CTA in Nav ---------- */
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  padding: 10px 22px;
  white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, transform 0.2s, box-shadow 0.25s;
  text-align: center;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--color-accent);
  color: #EEF2F5;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-bright);
  border-color: var(--color-accent-bright);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 2px;
}

.btn-outline {
  background: transparent;
  color: #EEF2F5;
  border-color: rgba(238,242,245,0.3);
}

.btn-outline:hover {
  border-color: #EEF2F5;
  background: rgba(238,242,245,0.06);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 2px;
}

.btn-lg {
  font-size: 16px;
  padding: 14px 32px;
}

.btn-full {
  width: 100%;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  padding: 120px 24px 100px;
  overflow: hidden;
  background: var(--color-darker);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* Track lines */
.hero-track-lines {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  opacity: 0.06;
}

.track-line {
  width: 100%;
  height: 1px;
  background: var(--color-accent);
}

/* Grid dots */
.hero-grid-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(238,242,245,0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
  text-align: center;
}

.hero-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
}

.hero-headline {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  color: #EEF2F5;
  margin-bottom: 28px;
}

.hero-subline {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 720px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.hero-stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-secondary);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 500;
}

/* ---------- Section Headings ---------- */
.section-heading {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  color: #EEF2F5;
  margin-bottom: 16px;
}

.section-subheading {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 680px;
  margin-bottom: 56px;
}

.text-center {
  text-align: center;
}

.text-center.section-subheading {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Sections ---------- */
section {
  padding: 100px 0;
}

/* ---------- Capabilities ---------- */
.capabilities {
  background: var(--color-base);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.capability-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 36px 28px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.capability-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,59,47,0.35);
  box-shadow: 0 8px 32px rgba(255,59,47,0.08);
}

.capability-icon {
  margin-bottom: 20px;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(255,59,47,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.capability-icon span {
  display: block;
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  mask-size: contain;
  mask-position: center;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  -webkit-mask-position: center;
  -webkit-mask-repeat: no-repeat;
}

.capability-title {
  font-size: 19px;
  font-weight: 700;
  color: #EEF2F5;
  margin-bottom: 12px;
}

.capability-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.capability-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.capability-tags li {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary);
  background: rgba(25,227,193,0.08);
  border: 1px solid rgba(25,227,193,0.18);
  border-radius: 20px;
  padding: 4px 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---------- About ---------- */
.about {
  background: var(--color-darker);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 60px;
  align-items: flex-start;
}

.about-intro {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.about-values {
  margin-top: 36px;
}

.about-values-heading {
  font-size: 20px;
  font-weight: 700;
  color: #EEF2F5;
  margin-bottom: 16px;
}

.about-values-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-values-list li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  padding-left: 20px;
  position: relative;
}

.about-values-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-accent);
}

.about-values-list li strong {
  color: #EEF2F5;
  font-weight: 600;
}

.about-highlight {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.highlight-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.highlight-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-secondary);
  line-height: 1.2;
}

.highlight-label {
  font-size: 13px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* ---------- Process ---------- */
.process {
  background: var(--color-base);
}

.process-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.process-line {
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(238,242,245,0.1);
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  display: flex;
  gap: 32px;
  position: relative;
  padding-bottom: 44px;
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-step-marker {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 1px;
  z-index: 1;
  transition: border-color 0.3s, background 0.3s;
}

.process-step:hover .process-step-marker {
  border-color: var(--color-accent);
  background: rgba(255,59,47,0.08);
}

.process-step-body {
  padding-top: 4px;
}

.process-step-title {
  font-size: 20px;
  font-weight: 700;
  color: #EEF2F5;
  margin-bottom: 8px;
}

.process-step-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- Results ---------- */
.results {
  background: var(--color-darker);
  position: relative;
  overflow: hidden;
}

.results::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(255,59,47,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.results-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: border-color 0.3s, transform 0.3s;
}

.result-card:hover {
  border-color: rgba(25,227,193,0.3);
  transform: translateY(-4px);
}

.result-value {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-secondary);
  line-height: 1;
}

.result-label {
  font-size: 14px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

/* ---------- Testimonials ---------- */
.testimonials {
  background: var(--color-base);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: border-color 0.3s, transform 0.3s;
}

.testimonial-card:hover {
  border-color: var(--color-border);
  transform: translateY(-4px);
}

.testimonial-text {
  flex: 1;
}

.testimonial-text p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  font-style: italic;
}

.testimonial-author {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-name {
  font-size: 15px;
  font-weight: 700;
  color: #EEF2F5;
}

.testimonial-company {
  font-size: 13px;
  color: var(--color-muted);
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-darker);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-start;
}

.contact-info-heading {
  font-size: 22px;
  font-weight: 700;
  color: #EEF2F5;
  margin-bottom: 24px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-detail dt {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.contact-detail dd {
  font-size: 16px;
  line-height: 1.6;
  color: #EEF2F5;
}

.contact-detail dd a {
  color: var(--color-secondary);
  transition: color 0.2s;
}

.contact-detail dd a:hover {
  color: var(--color-accent);
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: #EEF2F5;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
  font-family: inherit;
  font-size: 15px;
  background: var(--color-darker);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 12px 16px;
  color: #EEF2F5;
  transition: border-color 0.25s, box-shadow 0.25s;
  width: 100%;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255,59,47,0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #5A6A78;
}

.contact-form .btn {
  margin-top: 4px;
  padding: 14px 32px;
  font-size: 16px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-darker);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 32px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.logo-footer {
  font-size: 20px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: #EEF2F5;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: var(--color-muted);
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-address {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-address p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
}

.footer-address .footer-link {
  font-size: 14px;
}

.footer-legal {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--color-muted);
}

.footer-legal-links a {
  color: var(--color-muted);
  transition: color 0.2s;
}

.footer-legal-links a:hover {
  color: var(--color-accent);
}

.footer-separator {
  color: var(--color-border);
}

.footer-copy {
  font-size: 13px;
  color: var(--color-muted);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive: 1024px ---------- */
@media (max-width: 1024px) {
  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonial-card:last-child {
    grid-column: span 2;
    max-width: 50%;
    justify-self: center;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-highlight {
    position: static;
  }

  .highlight-card {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* ---------- Responsive: 768px ---------- */
@media (max-width: 768px) {
  .nav-toggle-label {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    background: var(--color-darker);
    border-left: 1px solid var(--color-border);
    padding: 100px 28px 32px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 999;
  }

  .nav-toggle-input:checked ~ .main-nav {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
    color: #EEF2F5;
  }

  .nav-link::after {
    display: none;
  }

  .btn-nav-cta {
    margin-top: 20px;
    width: 100%;
  }

  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .testimonial-card:last-child {
    grid-column: span 1;
    max-width: 100%;
  }

  .results-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-stats {
    gap: 28px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .process-step {
    gap: 20px;
  }

  .highlight-card {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-legal {
    align-items: flex-start;
    text-align: left;
  }
}

/* ---------- Responsive: 520px ---------- */
@media (max-width: 520px) {
  section {
    padding: 72px 0;
  }

  .hero {
    padding: 80px 20px 64px;
    min-height: auto;
  }

  .hero-headline {
    font-size: 30px;
  }

  .hero-subline {
    font-size: 16px;
  }

  .hero-stats {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }

  .results-band {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .result-value {
    font-size: 34px;
  }

  .process-step-marker {
    width: 40px;
    height: 40px;
    font-size: 12px;
  }

  .process-line {
    left: 19px;
  }

  .contact-form {
    padding: 24px 20px;
  }

  .highlight-card {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .footer-legal-links {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}