:root {
  --blue: #2563eb;
  --blue-dark: #1742bd;
  --navy: #0d1117;
  --ink: #111827;
  --muted: #667085;
  --line: #d9e0ea;
  --surface: #f5f7fa;
  --surface-strong: #edf2f7;
  --white: #ffffff;
  --teal: #0f9f9a;
  --amber: #d97706;
  --shadow: 0 24px 70px rgba(13, 17, 23, 0.14);
  --radius: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Manrope", "Poppins", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px max(20px, calc((100% - var(--container)) / 2));
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, padding 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(13, 17, 23, 0.92);
  box-shadow: 0 16px 45px rgba(13, 17, 23, 0.24);
  backdrop-filter: blur(14px);
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.35);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand small {
  margin-top: -3px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.92rem;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  color: rgba(255, 255, 255, 0.78);
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--blue);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 160ms ease, transform 160ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--white);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  padding: 0;
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 180ms ease;
}

.menu-toggle span + span {
  margin-top: -12px;
}

.menu-open .menu-toggle span:first-child {
  transform: translateY(7px) rotate(45deg);
}

.menu-open .menu-toggle span:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 86svh;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 18%;
  background: linear-gradient(180deg, rgba(13, 17, 23, 0), rgba(13, 17, 23, 0.9));
  content: "";
  pointer-events: none;
}

.hero-media {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(13, 17, 23, 0.98), rgba(13, 17, 23, 0.84) 52%, rgba(13, 17, 23, 0.58)),
    url("assets/gisul-hero.jpeg");
  background-position: center;
  background-size: cover;
  opacity: 0.78;
}

.hero-media::after {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  mask-image: linear-gradient(90deg, transparent, #000 26%, #000 84%, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 86svh;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: 140px;
  padding-bottom: 54px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #8db4ff;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: 5.4rem;
  line-height: 0.94;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 690px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.18rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.28);
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.22);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(860px, 100%);
  margin: 54px 0 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}

.hero-metrics div {
  min-height: 112px;
  padding: 20px;
  background: rgba(13, 17, 23, 0.72);
  backdrop-filter: blur(12px);
}

.hero-metrics dt {
  margin: 0 0 8px;
  color: var(--white);
  font-size: 1.35rem;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
}

.section {
  padding: 92px 0;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2,
.brand-copy h2,
.contact-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: 2.75rem;
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading p,
.brand-copy > p,
.contact-copy p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.solutions {
  background: var(--surface);
}

.service-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  width: fit-content;
}

.filter-button {
  min-height: 38px;
  padding: 0 14px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 7px;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.filter-button:hover,
.filter-button.is-active {
  color: var(--white);
  background: var(--navy);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.service-card {
  min-height: 332px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 1px 0 rgba(17, 24, 39, 0.04);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.service-card:hover {
  border-color: rgba(37, 99, 235, 0.36);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.service-card.is-hidden {
  display: none;
}

.service-index {
  display: inline-flex;
  width: 42px;
  height: 32px;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  background: #e9f0ff;
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 900;
}

.service-card h3,
.timeline-item h3,
.feature-list h3,
.case-grid h3 {
  margin: 20px 0 10px;
  color: var(--ink);
  font-size: 1.16rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.service-card p,
.timeline-item p,
.feature-list p,
.case-grid p {
  margin: 0;
  color: var(--muted);
}

.service-card ul {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.service-card li {
  position: relative;
  padding-left: 20px;
  color: #344054;
  font-size: 0.94rem;
}

.service-card li::before {
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
  content: "";
}

.process {
  background: var(--white);
}

.process-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: 70px;
  align-items: start;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.timeline-item span {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--white);
  background: var(--navy);
  border-radius: 8px;
  font-weight: 900;
}

.timeline-item:nth-child(2) span {
  background: var(--blue);
}

.timeline-item:nth-child(3) span {
  background: var(--teal);
}

.timeline-item:nth-child(4) span {
  background: var(--amber);
}

.timeline-item h3 {
  margin-top: 0;
}

.brand-section {
  background: var(--navy);
  color: var(--white);
}

.brand-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  gap: 54px;
  align-items: center;
}

.brand-copy h2,
.brand-copy .eyebrow {
  color: var(--white);
}

.brand-copy > p {
  color: rgba(255, 255, 255, 0.72);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.feature-list article {
  min-height: 184px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.feature-list h3 {
  color: var(--white);
}

.feature-list p {
  color: rgba(255, 255, 255, 0.68);
}

.feature-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 900;
}

.feature-list article:nth-child(2) .feature-icon {
  background: var(--teal);
}

.feature-list article:nth-child(3) .feature-icon {
  background: var(--amber);
}

.feature-list article:nth-child(4) .feature-icon {
  color: var(--navy);
  background: var(--white);
}

.brand-board {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.28);
}

.brand-board img {
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.use-cases {
  background: var(--surface);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.case-grid article {
  min-height: 224px;
  padding: 26px;
  background: var(--white);
}

.case-grid h3 {
  margin-top: 0;
}

.contact {
  background: var(--white);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(380px, 1fr);
  gap: 70px;
  align-items: start;
}

.contact-copy {
  position: sticky;
  top: 110px;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-size: 0.92rem;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cfd7e3;
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.contact-form input,
.contact-form select {
  min-height: 48px;
  padding: 0 14px;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
  padding: 14px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.contact-form .button {
  width: fit-content;
  min-width: 172px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.form-status.is-error {
  color: #b42318;
}

.form-status.is-success {
  color: #047857;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--navy);
}

.footer-layout {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 24px;
  align-items: center;
}

.site-footer p,
.site-footer small {
  margin: 0;
}

.site-footer p {
  color: var(--white);
  font-weight: 900;
}

.site-footer p span {
  color: var(--blue);
}

.site-footer nav {
  display: flex;
  gap: 18px;
  font-size: 0.9rem;
  font-weight: 800;
}

.site-footer a:hover {
  color: var(--white);
}

.js-ready .section,
.js-ready .service-card,
.js-ready .timeline-item,
.js-ready .feature-list article,
.js-ready .case-grid article,
.js-ready .contact-form,
.js-ready .brand-board {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.js-ready .section.is-visible,
.js-ready .service-card.is-visible,
.js-ready .timeline-item.is-visible,
.js-ready .feature-list article.is-visible,
.js-ready .case-grid article.is-visible,
.js-ready .contact-form.is-visible,
.js-ready .brand-board.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero h1 {
    font-size: 4.1rem;
  }

  .service-grid,
  .process-layout,
  .brand-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .process-layout,
  .brand-layout,
  .contact-layout {
    gap: 38px;
  }

  .case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-copy {
    position: static;
  }

  .brand-board {
    max-width: 620px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .site-header {
    padding: 12px 14px;
  }

  .menu-toggle {
    display: grid;
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 14px;
    left: 14px;
    display: grid;
    gap: 4px;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 8px;
    background: rgba(13, 17, 23, 0.96);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .menu-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 13px 12px;
    border-radius: 7px;
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a:hover,
  .site-nav a.is-active {
    background: rgba(255, 255, 255, 0.08);
  }

  .hero,
  .hero-content {
    min-height: 82svh;
  }

  .hero-media {
    background-image: linear-gradient(90deg, rgba(13, 17, 23, 0.97), rgba(13, 17, 23, 0.82)),
      url("assets/gisul-hero.jpeg");
    background-position: 58% center;
  }

  .hero-content {
    padding-top: 112px;
    padding-bottom: 34px;
  }

  .hero h1 {
    font-size: 3.2rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    margin-top: 34px;
  }

  .hero-metrics div {
    min-height: auto;
    padding: 16px;
  }

  .section {
    padding: 68px 0;
  }

  .section-heading h2,
  .brand-copy h2,
  .contact-copy h2 {
    font-size: 2.18rem;
  }

  .service-filter {
    width: 100%;
  }

  .filter-button {
    flex: 1 1 auto;
  }

  .service-grid,
  .feature-list,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 20px;
  }

  .contact-form .button {
    width: 100%;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (max-width: 460px) {
  .brand strong {
    font-size: 0.94rem;
  }

  .brand small {
    font-size: 0.64rem;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero h1 {
    font-size: 2.55rem;
  }

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

  .section-heading h2,
  .brand-copy h2,
  .contact-copy h2 {
    font-size: 1.85rem;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

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