:root {
  --color-bg-logo: #211f26;
  --color-bg: #211f26;
  --color-bg-elevated: #ffffff;
  --color-bg-card: #2a2a2a;
  --color-text: #f5f5f5;
  --color-text-muted: #a3a3a3;
  --color-text-on-elevated: #211f26;
  --color-text-muted-on-elevated: #5c5a66;
  --color-bg-card-on-elevated: #f5f5f7;
  --color-border-on-elevated: #e4e4e7;
  --color-accent: #ffffff;
  --color-border: #3a3a3a;
  --color-focus: #60a5fa;

  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-card-light: 0 4px 20px rgba(33, 31, 38, 0.08);

  --max-width: 1100px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header / Nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg-logo);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
  min-height: var(--nav-height);
}

.nav__logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.nav__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.nav__links a svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav__links a:hover {
  color: var(--color-text);
}

/* Hero */

.hero {
  position: relative;
  background-color: var(--color-bg-logo);
  background-image: url("../hero-bg.jpg");
  background-size: cover;
  background-position: center;
  padding: calc(var(--space-xl) + 2rem) 0 calc(var(--space-xl) + 2rem);
  min-height: 75vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(33, 31, 38, 0.92) 0%,
    rgba(33, 31, 38, 0.75) 45%,
    rgba(33, 31, 38, 0.35) 100%
  );
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
  max-width: 48rem;
}

.hero__headline {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  max-width: 32ch;
}

.hero__tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-text-muted);
  max-width: 65ch;
  font-weight: 400;
  line-height: 1.6;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s, transform 0.15s;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.btn--primary:hover {
  opacity: 0.9;
}

.btn--primary:active {
  transform: scale(0.98);
}

/* Sections */

.section {
  padding: var(--space-xl) 0;
}

.section--services,
.section--contact {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-on-elevated);
}

.section--services .section__title,
.section--contact .section__title {
  color: var(--color-text-on-elevated);
}

.section--services .section__subtitle,
.section--contact .section__subtitle {
  color: var(--color-text-muted-on-elevated);
}

.section--team {
  background-color: var(--color-bg);
}

.section__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.section__title-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.section--services .section__title-icon,
.section--contact .section__title-icon {
  background-color: rgba(33, 31, 38, 0.06);
  color: var(--color-text-on-elevated);
}

.section__title-icon svg {
  width: 24px;
  height: 24px;
}

.section__subtitle {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  max-width: 50ch;
}

/* Services */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s;
}

.section--services .service-card {
  background-color: var(--color-bg-card-on-elevated);
  border-color: var(--color-border-on-elevated);
  box-shadow: var(--shadow-card-light);
  color: var(--color-text-on-elevated);
}

.section--services .service-card:hover {
  border-color: #c8c8cc;
}

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-sm);
  border-radius: var(--radius-sm);
  background-color: rgba(33, 31, 38, 0.06);
  color: var(--color-text-on-elevated);
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.section--services .service-card p {
  color: var(--color-text-muted-on-elevated);
}

/* Team */

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.team-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.team-card__avatar {
  width: 144px;
  height: 144px;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  background: linear-gradient(135deg, #444, #666);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
}

img.team-card__avatar {
  object-fit: cover;
  display: block;
}

.team-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.team-card__role {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.team-card__bio {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.team-card__linkedin {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  background-color: rgba(255, 255, 255, 0.06);
  transition: color 0.2s, background-color 0.2s;
}

.team-card__linkedin svg {
  width: 18px;
  height: 18px;
}

.team-card__linkedin:hover {
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.12);
}

/* Tech banner */

.tech-banner {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  overflow: hidden;
}

.tech-banner__viewport {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}

.tech-banner__track {
  --tech-banner-gap: var(--space-xl);
  --marquee-distance: 0px;
  display: flex;
  flex-wrap: nowrap;
  width: max-content;
  animation: tech-banner-scroll 60s linear infinite;
  will-change: transform;
}

.tech-banner__group {
  display: flex;
  flex-shrink: 0;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--tech-banner-gap);
  padding-right: var(--tech-banner-gap);
}

.tech-banner__group img {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  opacity: 0.85;
  transition: opacity 0.2s, transform 0.2s;
}

.tech-banner__group img:hover {
  opacity: 1;
  transform: scale(1.08);
}

@keyframes tech-banner-scroll {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(calc(-1 * var(--marquee-distance)), 0, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tech-banner__track {
    animation: none;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    gap: var(--space-md);
  }

  .tech-banner__group[aria-hidden="true"] {
    display: none;
  }

  .tech-banner__viewport {
    mask-image: none;
  }
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-info__detail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

.contact-info__row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-info__icon {
  display: flex;
  flex-shrink: 0;
  color: var(--color-text-muted-on-elevated);
  line-height: 1;
}

.contact-info__icon svg {
  width: 16px;
  height: 16px;
}

.contact-info__label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.section--contact .contact-info__label {
  color: var(--color-text-muted-on-elevated);
}

.contact-info__list a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.section--contact .contact-info__list a {
  color: var(--color-text-on-elevated);
}

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

.section--contact .contact-info__list a:hover {
  color: var(--color-text-muted-on-elevated);
}

.contact-form {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
}

.section--contact .contact-form {
  background-color: var(--color-bg-card-on-elevated);
  border-color: var(--color-border-on-elevated);
  box-shadow: var(--shadow-card-light);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.section--contact .form-group label {
  color: var(--color-text-on-elevated);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
}

.section--contact .form-group input,
.section--contact .form-group textarea {
  background-color: #ffffff;
  border-color: var(--color-border-on-elevated);
  color: var(--color-text-on-elevated);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #666;
}

.section--contact .form-group input::placeholder,
.section--contact .form-group textarea::placeholder {
  color: #9ca3af;
}

.section--contact .btn--primary {
  background-color: var(--color-bg-logo);
  color: #ffffff;
}

/* Footer */

.footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

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

.footer p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--color-text);
}

/* Responsive */

@media (max-width: 768px) {
  .hero {
    min-height: 60vh;
  }

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

  .nav__links {
    gap: var(--space-sm);
  }

  .nav__links a {
    font-size: 0.85rem;
  }

  .nav__logo img {
    height: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .nav {
    flex-direction: column;
    padding: var(--space-sm) 0;
    gap: var(--space-sm);
  }

  .hero {
    padding-top: var(--space-lg);
  }
}