:root {
  --bg: #f8fafc;
  --bg-soft: #fcfdff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.97);

  --text: #143046;
  --text-soft: #6b7f8f;

  --primary: #143f68;
  --primary-dark: #0d2f4b;
  --blue-soft: #8fbfd3;

  --border: rgba(20, 63, 104, 0.08);
  --border-strong: rgba(20, 63, 104, 0.14);

  --shadow-soft: 0 10px 30px rgba(14, 34, 52, 0.05);
  --shadow-md: 0 18px 45px rgba(14, 34, 52, 0.08);
  --shadow-lg: 0 30px 80px rgba(14, 34, 52, 0.14);

  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 38px;
  --radius-pill: 999px;

  --container: 1180px;
  --header-height: 84px;

  --transition: 0.3s ease;
  --font-main: "Inter", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at top right, rgba(143, 191, 211, 0.18), transparent 26%),
    linear-gradient(180deg, #fbfdff 0%, #f4f8fb 42%, #fafcfe 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: 112px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  margin-bottom: 16px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(20, 63, 104, 0.08);
  box-shadow: var(--shadow-soft);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
}

.section-heading h2 {
  margin: 0 0 14px;
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.section-heading p {
  margin: 0;
  color: var(--text-soft);
  font-size: 1.05rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(20, 63, 104, 0.06);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

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

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.desktop-nav a {
  position: relative;
  color: var(--text);
  font-weight: 600;
  transition: color var(--transition), transform var(--transition);
}

.desktop-nav a:hover {
  color: var(--primary);
  transform: translateY(-1px);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    color var(--transition);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #1d5986);
  color: #fff;
  box-shadow: 0 16px 36px rgba(20, 63, 104, 0.16);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
}

/* Hero */

.hero {
  position: relative;
  min-height: calc(90vh - 10px);
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(rgba(8, 23, 36, 0.34), rgba(8, 23, 36, 0.62)),
    url("projectcon1.png") center center / cover no-repeat;
  transform: scale(1.02);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.06), transparent 22%),
    radial-gradient(circle at 20% 75%, rgba(255, 255, 255, 0.04), transparent 24%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 160px;
  z-index: -1;
  background: linear-gradient(180deg, transparent, rgba(248, 250, 252, 0.98));
}

.hero-content-wrap {
  padding-top: 46px;
  padding-bottom: 80px;
}

.hero-content {
  max-width: 700px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  margin-bottom: 18px;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px);
  color: rgba(255, 255, 255, 0.96);
  font-weight: 700;
  font-size: 0.92rem;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(3rem, 7vw, 5.8rem);
  line-height: 0.93;
  letter-spacing: -0.07em;
  max-width: 10ch;
}

.hero-subheadline {
  margin: 0;
  max-width: 620px;
  color: rgba(255, 255, 255, 0.87);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-note {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.77);
  font-weight: 600;
  font-size: 0.96rem;
}

/* Intro */

.intro-section {
  padding-top: 90px;
}

/* Services / cards */

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

.service-card,
.why-card,
.contact-box,
.gallery-item {
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
}

.service-card,
.why-card {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-lg);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.service-card:hover,
.why-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.service-card h3,
.why-card h3 {
  margin: 0 0 10px;
  font-size: 1.16rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.service-card p,
.why-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.99rem;
}

/* Gallery */

.projects-section {
  scroll-margin-top: 100px;
}

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

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
  cursor: pointer;
}

.gallery-item:hover {
  transform: translateY(-10px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.gallery-item img {
  width: 100%;
  height: 310px;
  object-fit: cover;
  filter: grayscale(35%) saturate(0.92) contrast(1.02);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
  filter: grayscale(0%) saturate(1.03) contrast(1.03);
}

.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.02), transparent 40%, rgba(9, 22, 34, 0.16));
  pointer-events: none;
}

/* FAQ */

.faq-section {
  scroll-margin-top: 100px;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}

.faq-item.active {
  border-color: var(--border-strong);
}

.faq-question {
  width: 100%;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--text);
  font-size: 1.02rem;
  font-weight: 600;
  cursor: pointer;
}

.faq-question span:first-child {
  max-width: 90%;
}

.faq-icon {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(20, 63, 104, 0.06);
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1;
  transition: transform var(--transition), background var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(20, 63, 104, 0.1);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.34s ease;
}

.faq-answer p {
  margin: 0 0 22px;
  max-width: 690px;
  color: var(--text-soft);
  font-size: 1rem;
}

/* Contact */

.contact-box {
  max-width: 820px;
  margin: 0 auto;
  padding: 62px 40px;
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.contact-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(143, 191, 211, 0.14), transparent 24%),
    radial-gradient(circle at 85% 80%, rgba(255, 255, 255, 0.1), transparent 24%);
  pointer-events: none;
}

.contact-box > * {
  position: relative;
  z-index: 1;
}

.contact-box h2 {
  margin: 0 0 12px;
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.06;
  letter-spacing: -0.05em;
}

.contact-box p {
  margin: 0 auto 24px;
  max-width: 580px;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.contact-email {
  display: inline-block;
  margin-top: 20px;
  color: var(--primary);
  font-size: 1.12rem;
  font-weight: 700;
  transition: color var(--transition), transform var(--transition);
}

.contact-email:hover {
  color: var(--primary-dark);
  transform: translateY(-1px);
  text-decoration: underline;
}

/* Footer */

.site-footer {
  padding: 62px 0;
  background: linear-gradient(180deg, #12293b 0%, #0f2232 100%);
  color: rgba(255, 255, 255, 0.82);
  text-align: center;
}

.site-footer p {
  margin: 0 0 10px;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.site-footer a {
  color: #fff;
}

.site-footer a:hover {
  opacity: 0.84;
}

/* Responsive */

@media (max-width: 1024px) {
  .services-grid,
  .why-grid,
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    max-width: 12ch;
  }
}

@media (max-width: 820px) {
  .section {
    padding: 88px 0;
  }

  .header-inner {
    justify-content: center;
  }

  .main-nav {
    display: none;
  }

  .hero {
    min-height: 76vh;
  }

  .hero-content-wrap {
    padding-top: 26px;
    padding-bottom: 56px;
  }

  .hero h1 {
    font-size: 3.25rem;
  }

  .services-grid,
  .why-grid,
  .gallery {
    grid-template-columns: 1fr;
  }

  .gallery-item img {
    height: 280px;
  }

  .contact-box {
    padding: 52px 28px;
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 74px;
  }

  .container {
    width: min(100% - 1.2rem, var(--container));
  }

  .logo-img {
    height: 36px;
  }

  .section {
    padding: 74px 0;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .section-heading h2,
  .contact-box h2 {
    font-size: 2.25rem;
  }

  .hero {
    min-height: 70vh;
  }

  .hero h1 {
    font-size: 2.62rem;
  }

  .hero-subheadline,
  .section-heading p,
  .contact-box p,
  .faq-answer p {
    font-size: 1rem;
  }

  .service-card,
  .why-card {
    padding: 24px;
  }

  .gallery-item {
    border-radius: 24px;
  }

  .gallery-item img {
    height: 230px;
  }

  .contact-box {
    padding: 42px 22px;
    border-radius: 28px;
  }

  .faq-question {
    padding: 20px 0;
    font-size: 0.98rem;
  }

  .faq-icon {
    width: 30px;
    height: 30px;
    font-size: 1.05rem;
  }
}