:root {
  --color-primary: #143a52;
  --color-primary-strong: #0d2a3d;
  --color-accent: #f28f3b;
  --color-accent-soft: #ffd9b8;
  --color-bg: #f3f6f7;
  --color-surface: #ffffff;
  --color-surface-alt: #e9eef1;
  --color-text: #15232e;
  --color-text-muted: #5f6f79;
  --color-border: #d8e2e7;
  --color-success: #16a34a;

  --font-heading: 'Sora', sans-serif;
  --font-body: 'Manrope', sans-serif;

  --container-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 6px 18px rgba(20, 58, 82, 0.08);
  --shadow-md: 0 14px 36px rgba(20, 58, 82, 0.12);
  --shadow-lg: 0 22px 55px rgba(20, 58, 82, 0.16);

  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(1200px 600px at 110% -10%, #d5e9f4 0%, rgba(213, 233, 244, 0) 60%),
    radial-gradient(700px 500px at -20% 20%, #edf3d9 0%, rgba(237, 243, 217, 0) 55%),
    var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-primary-strong);
  line-height: 1.15;
  margin-bottom: 0.8rem;
}

h1 {
  font-size: clamp(2rem, 3.7vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.5rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

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

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

.section {
  padding: clamp(3.2rem, 8vw, 6.5rem) 0;
}

.section-bg-offset {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(233, 238, 241, 0.75));
}

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

.mt-md {
  margin-top: 2rem;
}

.w-full {
  width: 100%;
}

.section-head {
  max-width: 740px;
  margin: 0 auto 2.2rem;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 0.9rem;
}

.section-kicker::before {
  content: '';
  width: 22px;
  height: 2px;
  border-radius: 99px;
  background: var(--color-accent);
}

.section-subtitle {
  font-size: 1.06rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 999px;
  padding: 0.72rem 1.45rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #1f516f);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.72);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-light {
  background: #fff;
  color: var(--color-primary-strong);
}

.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(216, 226, 231, 0.8);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.24rem;
  letter-spacing: 0.09em;
  font-weight: 800;
  color: var(--color-primary);
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav-link {
  font-weight: 700;
  color: var(--color-text);
  padding: 0.38rem 0.65rem;
  border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(20, 58, 82, 0.08);
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-primary);
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
}

main {
  padding-top: 78px;
}

.hero {
  min-height: calc(94vh - 78px);
  display: flex;
  align-items: center;
  color: #fff;
  background:
    linear-gradient(125deg, rgba(8, 29, 41, 0.86), rgba(20, 58, 82, 0.72)),
    url('https://images.unsplash.com/photo-1516455207990-7a41ce80f7ee?auto=format&fit=crop&w=1800&q=80') center/cover no-repeat;
}

.hero-content {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.42rem 0.82rem;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  color: #fff;
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  max-width: 700px;
  margin: 0 auto 1.8rem;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.hero-facts {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.hero-facts li {
  border-radius: var(--radius-md);
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.9);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.1rem;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #b4c9d4;
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-accent-soft);
  color: #9c4f11;
  display: grid;
  place-content: center;
  font-size: 1.24rem;
  margin-bottom: 0.85rem;
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1.02fr 1fr;
  gap: 2.4rem;
  align-items: center;
}

.why-us-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.features-list {
  margin: 1.15rem 0 1.6rem;
}

.features-list li {
  position: relative;
  margin-bottom: 0.85rem;
  padding-left: 1.75rem;
}

.features-list li::before {
  content: '\f058';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-success);
}

.split-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.project-preview-grid,
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}

.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(216, 226, 231, 0.7);
  box-shadow: var(--shadow-sm);
  aspect-ratio: 4 / 3;
}

.project-card img {
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover img {
  transform: scale(1.06);
}

.project-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.1rem;
  background: linear-gradient(180deg, rgba(10, 24, 33, 0.05) 0%, rgba(10, 24, 33, 0.88) 100%);
  color: #fff;
}

.project-overlay h3 {
  color: #fff;
  margin-bottom: 0.2rem;
}

.project-overlay p {
  color: rgba(255, 255, 255, 0.82);
  margin: 0;
  font-size: 0.92rem;
}

.cta-band {
  background: linear-gradient(120deg, var(--color-primary-strong), #275a79);
  color: #fff;
}

.cta-band h2,
.cta-band p {
  color: #fff;
}

.cta-band p {
  opacity: 0.85;
}

.page-header {
  padding: clamp(4.5rem, 8vw, 6rem) 0 clamp(2.6rem, 5.3vw, 4rem);
  background:
    linear-gradient(120deg, rgba(13, 42, 61, 0.96), rgba(31, 81, 111, 0.92)),
    radial-gradient(circle at 80% 20%, rgba(242, 143, 59, 0.35), rgba(242, 143, 59, 0));
  color: #fff;
  text-align: center;
}

.page-header h1,
.page-header p {
  color: #fff;
}

.page-header p {
  max-width: 720px;
  margin: 0.35rem auto 0;
  opacity: 0.82;
}

.filter-container {
  display: flex;
  justify-content: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #fff;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.project-item {
  display: none;
  animation: fadeIn 0.35s ease;
}

.project-item.show {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.timeline {
  position: relative;
  max-width: 920px;
  margin-inline: auto;
  padding: 0.4rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(20, 58, 82, 0.25), rgba(20, 58, 82, 0.08));
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0.9rem 1.2rem;
}

.timeline-item.left {
  left: 0;
}

.timeline-item.right {
  left: 50%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 2.1rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #fff;
  box-shadow: var(--shadow-sm);
}

.timeline-item.left::before {
  right: -7px;
}

.timeline-item.right::before {
  left: -7px;
}

.timeline-content {
  position: relative;
  padding: 1.3rem 1.2rem;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.step-number {
  position: absolute;
  top: 0.4rem;
  right: 0.8rem;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(20, 58, 82, 0.08);
}

.timeline-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--color-accent-soft);
  display: grid;
  place-content: center;
  color: #9c4f11;
  margin-bottom: 0.7rem;
}

.contact-container {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  background: #fff;
}

.contact-info {
  background: linear-gradient(165deg, var(--color-primary-strong), var(--color-primary));
  padding: 2.1rem;
  color: #fff;
}

.contact-info h3,
.contact-info h4,
.contact-info p {
  color: #fff;
}

.contact-info p {
  opacity: 0.84;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.info-item i {
  margin-top: 0.15rem;
  color: var(--color-accent-soft);
}

.contact-form-wrapper {
  padding: 2.1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-text);
  font-weight: 700;
}

.form-control {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.72rem 0.86rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(20, 58, 82, 0.12);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.social-links {
  display: flex;
  gap: 0.65rem;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.14);
}

.map-section {
  height: 380px;
  border-top: 1px solid var(--color-border);
}

.map-section iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.footer {
  background: #0f2637;
  color: #fff;
  padding: 3.2rem 0 1.4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.45fr 1fr 1fr 1fr;
  gap: 1.2rem;
  margin-bottom: 1.8rem;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 0.9rem;
}

.footer-col p,
.footer-col a,
.footer-col li {
  color: rgba(255, 255, 255, 0.76);
}

.footer-col li {
  margin-bottom: 0.45rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 1rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1100;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-160%);
}

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

:where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

.form-help,
.form-privacy {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.form-help {
  margin-top: 0.35rem;
}

.form-privacy {
  margin-bottom: 0.9rem;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
}

.form-status {
  min-height: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.form-status.success {
  color: var(--color-success);
}

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

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.animate-on-scroll {
  opacity: 1;
  transform: none;
}

.js .animate-on-scroll {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.js .animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 860px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 78px;
    right: 1.25rem;
    left: 1.25rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 0.9rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links .btn {
    margin-top: 0.35rem;
    width: 100%;
  }

  .hero-facts {
    grid-template-columns: 1fr;
  }

  .why-us-grid {
    grid-template-columns: 1fr;
  }

  .split-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline::before {
    left: 18px;
  }

  .timeline-item,
  .timeline-item.left,
  .timeline-item.right {
    width: 100%;
    left: 0;
    padding: 0.8rem 0 0.8rem 2.1rem;
  }

  .timeline-item.left::before,
  .timeline-item.right::before {
    left: 11px;
    right: auto;
  }

  .contact-container {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(var(--container-width), 100% - 1.4rem);
  }

  main {
    padding-top: 72px;
  }

  .nav {
    min-height: 72px;
  }

  .logo {
    font-size: 1.04rem;
    letter-spacing: 0.07em;
  }

  .mobile-menu-btn {
    width: 42px;
    height: 42px;
  }

  .hero {
    min-height: calc(74vh - 72px);
    padding: 1rem 0 1.35rem;
    align-items: flex-start;
  }

  .hero-content {
    padding-top: 0.4rem;
  }

  .hero-badge {
    margin-bottom: 0.75rem;
    padding: 0.34rem 0.78rem;
    font-size: 0.76rem;
  }

  .hero h1 {
    font-size: clamp(1.95rem, 7.9vw, 2.3rem);
    line-height: 1.12;
    margin-bottom: 0.65rem;
  }

  .hero p {
    font-size: 0.96rem;
    line-height: 1.5;
    margin-bottom: 1.05rem;
  }

  .hero-actions {
    gap: 0.55rem;
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: min(100%, 290px);
  }

  .hero-facts {
    margin-top: 1rem;
    gap: 0.55rem;
  }

  .hero-facts li {
    padding: 0.62rem 0.74rem;
    font-size: 0.9rem;
  }

  .section {
    padding: clamp(2.45rem, 10vw, 3.1rem) 0;
  }

  .section-head {
    margin-bottom: 1.4rem;
  }

  .section-kicker {
    font-size: 0.74rem;
    margin-bottom: 0.68rem;
  }

  .section-subtitle {
    font-size: 0.98rem;
  }

  .service-grid,
  .project-preview-grid,
  .portfolio-grid,
  .footer-content {
    grid-template-columns: 1fr;
  }

  .service-card,
  .timeline-content,
  .contact-info,
  .contact-form-wrapper {
    padding: 1.1rem;
  }

  .footer {
    padding-top: 2.5rem;
  }
}

@media (max-width: 420px) {
  main {
    padding-top: 70px;
  }

  .nav {
    min-height: 70px;
  }

  .hero {
    min-height: calc(70vh - 70px);
    padding-top: 0.85rem;
  }

  .hero h1 {
    font-size: clamp(1.85rem, 8.2vw, 2.15rem);
  }

  .hero p {
    margin-bottom: 0.9rem;
  }

  .hero-facts li {
    border-radius: 12px;
  }
}