:root {
  --primary-blue: #0053a0;
  --accent-gold: #b59451;
  --accent-grey: #aaaaaa;
  --body-bg: #ffffff;
  --body-text: #333333;
  --soft-blue: #f0f6fb;
  --border-light: #e5e8ec;
}

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

body {
  margin: 0;
  font-family: 'Montserrat', 'Roboto', 'Lato', Arial, sans-serif;
  color: var(--body-text);
  background-color: var(--body-bg);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.container {
  width: min(1200px, 90vw);
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

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

.btn-primary:hover {
  background-color: #003c73;
  transform: translateY(-2px);
}

.btn-outline {
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  background-color: transparent;
}

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

/* Header */
.site-header {
  border-bottom: 1px solid var(--border-light);
  background-color: rgba(255, 255, 255, 0.97);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.15;
}

.logo-wordmark {
  font-size: 1.1rem;
}

.logo-subtitle {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--accent-grey);
  font-weight: 700;
}

.nav-toggle {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--primary-blue);
}

.nav-links {
  position: absolute;
  inset: 100% 0 auto 0;
  background-color: #fff;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.nav-links.open {
  max-height: 400px;
}

.nav-links li a {
  display: block;
  padding: 0.95rem 1.5rem;
  font-weight: 600;
  color: var(--body-text);
}

.nav-links li a:hover,
.nav-links li a.current {
  color: var(--primary-blue);
}

.nav-cta {
  margin: 0.75rem 1.5rem 1.5rem;
}

.nav-cta .btn {
  padding: 0.9rem 2rem;
}

/* Hero */
.hero {
  background: linear-gradient(120deg, rgba(0, 83, 160, 0.9), rgba(0, 0, 0, 0.5)),
    url('../assets/img/fsi-hero.jpg') center/cover no-repeat;
  color: #fff;
  padding: 5rem 0 6rem;
}

.hero-content {
  max-width: 650px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.4rem);
  margin: 0;
}

.hero p {
  font-size: 1.1rem;
  margin: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Sections */
section {
  padding: 4rem 0;
}

.section-heading {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--accent-grey);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.5rem);
  margin: 0 0 1rem;
}

.section-subtitle {
  max-width: 700px;
  margin-bottom: 2rem;
  color: #555;
}

.card {
  background-color: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
  padding: 2rem;
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.service-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background-color: var(--soft-blue);
  color: var(--primary-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card h3 {
  margin: 0 0 0.5rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 22px 40px rgba(0, 83, 160, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.project-card .project-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card a {
  font-weight: 600;
  color: var(--primary-blue);
}

/* About page */
.two-column {
  display: grid;
  gap: 2rem;
}

.mission-card {
  background-color: var(--soft-blue);
  border: 1px solid rgba(0, 0, 0, 0.05);
  padding: 2rem;
  border-radius: 18px;
}

.leader-card {
  border-left: 4px solid var(--primary-blue);
  padding: 1.5rem;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.08);
}

.leader-card h3 {
  margin: 0;
}

.leader-card span {
  font-weight: 600;
  color: var(--accent-gold);
}

/* Services page */
.service-grid {
  display: grid;
  gap: 1.25rem;
}

.service-grid li {
  background-color: #fff;
  padding: 1.25rem 1.5rem;
  border-radius: 14px;
  border: 1px solid var(--border-light);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05);
  font-weight: 600;
}

/* Projects page */
.gallery-grid {
  display: grid;
  gap: 1.25rem;
}

.gallery-grid figure {
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
}

.gallery-grid figcaption {
  padding: 1rem;
  background-color: #fff;
  font-weight: 600;
}

.gallery-grid img {
  height: 210px;
  object-fit: cover;
  width: 100%;
}

.table-wrapper {
  margin-top: 2rem;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

th,
td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-light);
  text-align: left;
}

th {
  background-color: var(--soft-blue);
  font-weight: 700;
  color: var(--primary-blue);
}

/* Contact page */
.contact-grid {
  display: grid;
  gap: 2rem;
}

.contact-card {
  padding: 2rem;
  background-color: #fff;
  border-radius: 18px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
}

.contact-details p {
  margin: 0 0 0.35rem;
}

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

label {
  font-size: 0.95rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-light);
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
}

textarea {
  min-height: 140px;
}

.map-placeholder {
  margin-top: 1.25rem;
  border-radius: 12px;
  border: 1px dashed var(--accent-grey);
  padding: 1.75rem;
  text-align: center;
  font-weight: 600;
  color: var(--accent-grey);
}

/* Footer */
footer {
  background-color: #031d3b;
  color: #fff;
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

.footer-heading {
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--accent-grey);
}

.footer-links li {
  margin-bottom: 0.5rem;
}

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

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin-top: 2rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
}

.badge-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* Utilities */
.bg-light {
  background-color: var(--soft-blue);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accent-text {
  color: var(--accent-gold);
}

/* Responsive styles */
@media (min-width: 640px) {
  .nav-links {
    position: static;
    flex-direction: row;
    max-height: none;
    border-bottom: none;
    align-items: center;
    gap: 1rem;
    padding: 0;
  }

  .nav-links li a {
    padding: 0;
  }

  .nav-cta {
    margin: 0;
  }

  .nav-toggle {
    display: none;
  }

  .header-inner {
    gap: 1.5rem;
  }
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .hero {
    padding: 7rem 0 7rem;
  }

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

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

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

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

@media (min-width: 992px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-3-lg {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    gap: 3rem;
  }
}

@media (max-width: 639px) {
  .hero-actions {
    flex-direction: column;
  }

  .project-card img {
    height: 180px;
  }

  section {
    padding: 3rem 0;
  }

  .hero {
    padding: 4rem 0 4.5rem;
  }

  .grid {
    gap: 1rem;
  }

  .btn {
    padding: 0.75rem 1.4rem;
    font-size: 0.95rem;
  }

  .nav-cta .btn {
    padding: 0.75rem 1.4rem;
  }

  .section-title {
    margin-bottom: 0.75rem;
  }
}