:root {
  
  --primary-blue: #4A90E2; 
  --primary-blue-dark: #2E5C8A;
  --primary-blue-light: #A8C6E8;
  --warm-grey: #6B7280; 
  --warm-grey-light: #D1D5DB;
  --warm-grey-dark: #374151;
  --accent-green: #10B981; 
  --accent-green-light: #6EE7B7;
  --accent-gold: #D4AF37; 
  --accent-gold-light: #F5E6A3;
  --neutral-white: #FFFFFF;
  --neutral-black: #1F2937;
  --text-on-light: var(--neutral-black);
  --text-on-dark: var(--neutral-white);
  --bg-light: var(--neutral-white);
  --bg-dark: var(--warm-grey-dark);
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-strong: rgba(0, 0, 0, 0.2);

  --font-heading: 'Montserrat', sans-serif; 
  --font-body: 'Merriweather', serif; 
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --font-weight-normal: 400;
  --font-weight-bold: 700;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  opacity: 1 !important;
  visibility: visible !important;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-on-light);
  background-color: var(--bg-light);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--neutral-black);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p, li, a {
  font-family: var(--font-body);
}

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

a:hover {
  color: var(--primary-blue-dark);
}

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

[data-aos] { opacity: 1 !important; }
.menu-item, .card, .content-block { display: block !important; opacity: 1 !important; }

.container {
  max-width: 1200px;
}

.btn {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-medium);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--text-on-dark);
}

.btn-primary:hover {
  background-color: var(--primary-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px var(--shadow-strong);
}

.btn-secondary {
  background-color: var(--accent-green);
  color: var(--text-on-dark);
}

.btn-secondary:hover {
  background-color: var(--accent-green);
  filter: brightness(0.9);
}

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

.btn-outline-primary:hover {
  background-color: var(--primary-blue);
  color: var(--text-on-dark);
}

.navbar {
  background-color: var(--bg-light);
  box-shadow: 0 2px 4px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  color: var(--primary-blue);
}

.navbar-nav .nav-link {
  font-family: var(--font-heading);
  color: var(--neutral-black);
  margin: 0 var(--spacing-sm);
  transition: color var(--transition-fast);
}

.navbar-nav .nav-link:hover {
  color: var(--primary-blue);
}

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-blue-light) 0%, var(--accent-green-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text fill="%23ffffff" font-size="20" y="50%">Blueprint</text></svg>') repeat;
  opacity: 0.1;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--text-on-dark);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px var(--shadow-strong);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.hero .btn {
  margin: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-xxl) 0;
}

.section-bg-dark {
  background-color: var(--warm-grey-light);
  color: var(--neutral-black);
}

.section-bg-accent {
  background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--primary-blue-light) 100%);
}

.card {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px var(--shadow);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px var(--shadow-strong);
}

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

.card-body {
  padding: var(--spacing-lg);
}

.gallery {
  max-width: 100%;
}

.gallery .container {
  max-width: 1800px !important;
  padding-left: 2rem;
  padding-right: 2rem;
}

.gallery .row {
  margin: 0;
  justify-content: center;
}

.gallery .project-item {
  display: flex;
  margin-bottom: 0;
  padding: 0;
}

.gallery .card {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

@media (min-width: 1200px) {
  .gallery .col-xl-6 {
    flex: 0 0 48%;
    max-width: 48%;
    margin: 0 1%;
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .gallery .col-lg-6 {
    flex: 0 0 48%;
    max-width: 48%;
    margin: 0 1%;
  }
}

.gallery .card-img-top {
  width: 100% !important;
  height: 180px !important;
  min-height: 180px !important;
  max-height: 180px !important;
  object-fit: cover !important;
  object-position: center !important;
  flex-shrink: 0;
  display: block;
  border-radius: 8px 8px 0 0;
}

.gallery .card-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  padding: 1.5rem;
}

.gallery .card-title {
  margin-bottom: 1rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.gallery .card-text {
  flex-grow: 1;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  color: #555;
}

.gallery .card .btn {
  margin-top: auto;
  width: auto;
  align-self: flex-start;
}

.card-title {
  color: var(--primary-blue);
}

.form-control {
  border: 2px solid var(--warm-grey-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

.btn-submit {
  background-color: var(--accent-green);
  color: var(--text-on-dark);
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1.1rem;
}

.btn-submit:hover {
  background-color: var(--accent-green);
  filter: brightness(0.9);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: transform var(--transition-medium);
}

.gallery-item:hover {
  transform: scale(1.05);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: var(--text-on-dark);
  padding: var(--spacing-lg);
  transform: translateY(100%);
  transition: transform var(--transition-medium);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

.testimonial {
  background-color: var(--bg-light);
  border-left: 5px solid var(--primary-blue);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 2px 4px var(--shadow);
}

.testimonial-author {
  font-weight: var(--font-weight-bold);
  color: var(--primary-blue);
  margin-top: var(--spacing-sm);
}

.calculator {
  background-color: var(--bg-light);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px var(--shadow);
}

.calculator-input {
  margin-bottom: var(--spacing-md);
}

.calculator-result {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--accent-green);
  text-align: center;
  margin-top: var(--spacing-lg);
}

.footer {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

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

.footer a:hover {
  color: var(--accent-gold-light);
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .section {
    padding: var(--spacing-xl) 0;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.btn:focus,
.form-control:focus,
.nav-link:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

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

.hover-lift:hover {
  transform: translateY(-5px);
}

.hover-scale {
  transition: transform var(--transition-medium);
}

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

.glass {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}