:root {
  --brand-primary: #0f172a;
  --brand-secondary: #334155;
  --brand-blue: #0284c7;
  --brand-blue-dark: #075985;
  --brand-blue-light: #f0f9ff;
  --brand-light: #f8fafc;
  --brand-white: #ffffff;
  --brand-border: #e2e8f0;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
  font-family: var(--font-main);
  color: var(--brand-secondary);
  background-color: var(--brand-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--brand-primary);
  letter-spacing: -0.02em;
}

/* Navbar */
.navbar {
  padding: 1.25rem 0;
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.9) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--brand-primary) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--brand-secondary) !important;
  margin: 0 0.75rem;
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--brand-blue);
  transform: scaleX(0);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--brand-blue) !important;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

/* Hero / Masthead */
.masthead {
  position: relative;
  background-color: var(--brand-primary);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 13rem 0 8rem;
  color: white;
  overflow: hidden;
}

.masthead.smallhead {
  padding: 9rem 0 5rem;
}

.masthead .overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.6) 100%);
  z-index: 1;
}

.site-heading, .page-heading {
  position: relative;
  z-index: 2;
}

.site-heading h1, .page-heading h1 {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  background: linear-gradient(to bottom right, #fff 50%, #cbd5e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-heading h1 {
  font-size: 3rem;
}

.subheading {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
  color: #ffffff !important;
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* Cards & Components */
.project-card {
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid var(--brand-border);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg) !important;
}

.project-card img {
  transition: transform 0.6s ease;
  object-fit: cover;
  height: 300px;
  width: 100%;
}

.project-card:hover img {
  transform: scale(1.05);
}

.testimonial-card {
  transition: var(--transition);
  border: 1px solid var(--brand-border) !important;
}

.testimonial-card:hover {
  border-color: var(--brand-blue) !important;
  transform: translateY(-4px);
}

.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.icon-circle {
  transition: var(--transition);
}

.card:hover .icon-circle {
  transform: scale(1.1) rotate(5deg);
  background-color: var(--brand-blue-dark) !important;
}

/* Buttons */
.btn-primary {
  background-color: var(--brand-blue);
  border-color: var(--brand-blue);
  border-radius: 50px;
  padding: 0.8rem 2rem;
  font-weight: 600;
}

.btn-primary:hover {
  background-color: var(--brand-blue-dark);
  border-color: var(--brand-blue-dark);
}

.btn-outline-light {
  border-radius: 50px;
  border-width: 2px;
}

/* Animations */
.animate-up {
  animation: slideUp 0.8s ease-out forwards;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
footer {
  background-color: var(--brand-primary);
  color: rgba(255,255,255,0.7);
  padding: 5rem 0 3rem;
}

footer h5 {
  color: white;
}

footer hr {
  border-color: rgba(255,255,255,0.1);
}

/* Responsive */
@media (max-width: 991px) {
  .site-heading h1 {
    font-size: 3.5rem;
  }
  .page-heading h1 {
    font-size: 2.5rem;
  }
  .masthead {
    padding: 10rem 0 6rem;
  }
}

@media (max-width: 767px) {
  .site-heading h1 {
    font-size: 2.5rem;
  }
  .page-heading h1 {
    font-size: 2rem;
  }
  .masthead {
    padding: 8rem 0 4rem;
  }
}