:root {
  --primary: #0A111F;
  
  --primary-light: #151D2D;
  --accent: #2563EB;
  
  --accent-hover: #1D4ED8;
  --bg-white: #FFFFFF;
  --bg-light: #F4F5F7;
  --text-dark: #2B2B2B;
  --text-muted: #666666;
  --text-light: #F8F9FA;

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;

  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-white);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--primary);
  font-weight: 600;
  line-height: 1.2;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

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

.text-muted {
  color: var(--text-muted);
}

.bg-light {
  background-color: var(--bg-light);
}

.w-100 {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  border-radius: 2px;
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-white);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(200, 169, 126, 0.3);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--bg-white);
  color: var(--bg-white);
  border-radius: 40px;
  padding: 16px 40px;
}

.btn-outline:hover {
  background-color: var(--bg-white);
  color: var(--primary);
  transform: translateY(-3px);
}

.btn-gold {
  background-color: var(--accent);
  color: var(--bg-white);
}

.btn-gold:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 30px 0;
  z-index: 1000;
  transition: var(--transition);
  background: linear-gradient(180deg, rgba(8, 12, 20, 0.7) 0%, rgba(8, 12, 20, 0) 100%);
  border-bottom: none;
}

.header.scrolled {
  background-color: rgba(14, 22, 40, 0.98);
  backdrop-filter: blur(10px);
  padding: 16px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  border-bottom: none;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 700;
  color: var(--bg-white);
  letter-spacing: 2.5px;
}

.brand-logo-img {
  height: 115px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1) drop-shadow(0 4px 10px rgba(0, 0, 0, 0.4));
  transition: height 0.4s ease, transform var(--transition);

  
  clip-path: inset(0 0 16% 0);
  margin-bottom: -20px;
  
  transform: translateY(8px);
  
}

.header.scrolled .brand-logo-img {
  height: 75px;
  margin-bottom: -12px;
  transform: translateY(4px);
}

.logo a:hover .brand-logo-img {
  transform: scale(1.03) translateY(8px);
}

.header.scrolled .logo a:hover .brand-logo-img {
  transform: scale(1.03) translateY(4px);
}

.logo span {
  color: var(--accent);
  font-weight: 400;
}

.nav-menu ul {
  display: flex;
  gap: 36px;
}

.nav-menu a {
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  position: relative;
  opacity: 0.9;
}

.nav-menu>ul>li>a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -6px;
  left: 0;
  background-color: var(--accent);
  transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  opacity: 1;
}

.nav-menu>ul>li>a:hover::after,
.nav-menu>ul>li>a.active::after {
  width: 100%;
}

.nav-menu li.dropdown {
  position: relative;
}

.nav-menu li.dropdown>a {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu ul.dropdown-menu {
  position: absolute;
  top: calc(100% + 20px);
  left: -10px;
  background-color: rgba(14, 22, 40, 0.98);
  min-width: 240px;
  padding: 15px 0;
  border-radius: 4px;
  border-top: 3px solid var(--accent);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav-menu ul.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -25px;
  left: 0;
  width: 100%;
  height: 25px;
  cursor: default;
}

.nav-menu li.dropdown:hover ul.dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-menu ul.dropdown-menu li {
  display: block;
}

.nav-menu ul.dropdown-menu a {
  display: block;
  padding: 12px 24px;
  text-transform: none;
  letter-spacing: 1px;
  font-size: 15px;
  opacity: 0.8;
}

.nav-menu ul.dropdown-menu a::after {
  display: none;
}

.nav-menu ul.dropdown-menu a:hover {
  opacity: 1;
  color: var(--accent);
  background-color: rgba(255, 255, 255, 0.03);
  padding-left: 30px;
}

.header-action {
  display: flex;
  align-items: center;
  gap: 20px;
}

.menu-toggle {
  background: none;
  border: none;
  color: var(--bg-white);
  font-size: 32px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu-toggle:hover {
  color: var(--accent);
}

.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}

.sidebar-menu {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  max-width: 100%;
  height: 100%;
  background-color: var(--primary);
  z-index: 1002;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
  overflow-y: auto;
}

.sidebar-menu.active {
  transform: translateX(-400px);
}

@media (max-width: 400px) {
  .sidebar-menu.active {
    transform: translateX(-100vw);
    width: 100vw;
  }

  .sidebar-menu {
    right: -100vw;
  }
}

.close-sidebar {
  position: absolute;
  top: 30px;
  right: 30px;
  background: none;
  border: none;
  color: var(--bg-white);
  font-size: 32px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.close-sidebar:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(90deg);
}

.sidebar-content {
  padding: 80px 40px 40px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  color: var(--bg-white);
  letter-spacing: 2px;
  margin-bottom: 50px;
}

.sidebar-logo:hover .brand-logo-img {
  transform: scale(1.05);
}

.sidebar-logo span {
  color: var(--accent);
  font-weight: 400;
}

.sidebar-nav ul {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 60px;
}

.sidebar-nav a {
  display: block;
  font-size: 20px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-light);
  transition: var(--transition);
}

.sidebar-nav a:hover {
  color: var(--accent);
  transform: translateX(10px);
}

.sidebar-dropdown>a {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-submenu {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 15px;
  padding-left: 20px;
  border-left: 2px solid rgba(255, 255, 255, 0.05);
  margin-left: 10px;
  margin-bottom: 10px;
}

.sidebar-submenu a {
  font-size: 16px;
  text-transform: none;
  color: #8C98A4;
  transition: var(--transition);
  letter-spacing: 1px;
}

.sidebar-submenu a:hover {
  color: var(--accent);
  transform: translateX(5px);
}

.sidebar-contact {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 40px;
}

.sidebar-contact h4 {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.sidebar-contact p {
  color: #8C98A4;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
  font-size: 15px;
}

.sidebar-contact i {
  font-size: 20px;
  color: var(--accent);
}

.hero {
  height: 100vh;
  min-height: 600px;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-slider,
.slide {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
}

.slide {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
}

.slide-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(14, 22, 40, 0.85) 0%, rgba(14, 22, 40, 0.4) 50%, rgba(14, 22, 40, 0.1) 100%);
}

.slide-content {
  position: relative;
  z-index: 2;
  padding-top: 80px;
  max-width: 900px;
  animation: fadeInUp 1s ease forwards;
}

.slide-subtitle {
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 5px;
  display: block;
  margin-bottom: 24px;
  text-transform: uppercase;
  font-weight: 500;
}

.slide-title {
  color: var(--bg-white);
  font-size: 72px;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.1;
}

.slide-desc {
  color: var(--text-light);
  font-size: 20px;
  font-weight: 300;
  margin-bottom: 48px;
  max-width: 600px;
  opacity: 0.9;
  line-height: 1.6;
}

.section-subtitle {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 18px;
  text-transform: uppercase;
  display: block;
}

.section-title {
  font-size: 44px;
  margin-bottom: 30px;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.2;
}

.about-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: 4px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
}

.experience-badge {
  position: absolute;
  bottom: -40px;
  left: -40px;
  background-color: var(--accent);
  color: var(--bg-white);
  padding: 45px;
  border-radius: 2px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(200, 169, 126, 0.35);
}

.experience-badge .years {
  display: block;
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
}

.experience-badge .text {
  font-size: 15px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  opacity: 0.9;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 50px;
}

.feature-box i {
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}

.feature-box h5 {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-box p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

.project-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.tab-btn {
  background: none;
  border: 1px solid rgba(0, 0, 0, 0.1);
  padding: 12px 30px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 40px;
  transition: var(--transition);
  letter-spacing: 1px;
  color: var(--text-muted);
}

.tab-btn:hover,
.tab-btn.active {
  background-color: var(--primary);
  color: var(--bg-white);
  border-color: var(--primary);
  box-shadow: 0 10px 20px rgba(14, 22, 40, 0.15);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  transition: var(--transition);
}

.project-card {
  background: var(--bg-white);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.project-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
}

.project-image {
  position: relative;
  height: 280px;
  overflow: hidden;
}

.project-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.3) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-image::after {
  opacity: 1;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-status {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: 30px;
  z-index: 2;
  letter-spacing: 1px;
}

.badge-gold {
  background-color: var(--accent);
  color: var(--bg-white);
}

.badge-dark {
  background-color: var(--primary);
  color: var(--bg-white);
}

.project-info {
  padding: 36px 30px;
}

.project-location {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.project-name {
  font-size: 24px;
  margin-bottom: 20px;
  transition: var(--transition);
}

.project-card:hover .project-name {
  color: var(--accent);
}

.project-action {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
}

.project-card:hover .project-action {
  color: var(--accent);
  gap: 12px;
}

.project-carousel { position: relative; overflow: hidden; }
.carousel-track { display: flex; width: 100%; height: 100%; transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1); }
.carousel-track img { flex: 0 0 100%; min-width: 100%; height: 100%; object-fit: cover; }
.project-card:hover .carousel-track img { transform: none;  }

.carousel-btn { 
  position: absolute; top: 50%; transform: translateY(-50%); 
  background: rgba(10,17,31,0.6); color: white; border: none; 
  width: 36px; height: 36px; border-radius: 50%; font-size: 18px; 
  cursor: pointer; z-index: 5; opacity: 0; transition: var(--transition); 
  display: flex; align-items: center; justify-content: center; 
  backdrop-filter: blur(4px); 
}
.project-carousel:hover .carousel-btn { opacity: 1; }
.carousel-btn:hover { background: var(--accent); }
.carousel-btn.prev-btn { left: 10px; }
.carousel-btn.next-btn { right: 10px; }

.sustainability-section {
  background-color: var(--primary);
  color: var(--bg-white);
  position: relative;
  z-index: 1;
}

.sustainability-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.05;
  background-image: url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80');
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.sustainability-section .section-subtitle,
.sustainability-section .section-title {
  color: var(--bg-white);
}

.sustainability-section .section-subtitle {
  color: var(--accent);
}

.sustainability-section .section-desc {
  color: var(--text-light);
  margin-bottom: 80px;
  font-size: 18px;
  opacity: 0.85;
  line-height: 1.8;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.tech-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 50px 30px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.tech-item:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(200, 169, 126, 0.3);
}

.tech-item .tech-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 30px;
  background: rgba(200, 169, 126, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--accent);
  transition: var(--transition);
}

.tech-item:hover .tech-icon {
  background: var(--accent);
  color: var(--bg-white);
  transform: scale(1.1);
}

.tech-item h4 {
  color: var(--bg-white);
  margin-bottom: 16px;
  font-size: 22px;
}

.tech-item p {
  color: var(--text-light);
  opacity: 0.7;
  font-size: 15px;
  line-height: 1.7;
}

.footer {
  background-color: #0A101C;
  color: var(--text-light);
  padding-top: 100px;
  border-top: 4px solid var(--accent);
}

.footer-top {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1.5fr 1.5fr;
  gap: 60px;
  margin-bottom: 80px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  color: var(--bg-white);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 24px;
}

.footer-logo span {
  color: var(--accent);
  font-weight: 400;
}

.brand-col p {
  color: #8C98A4;
  font-size: 15px;
  margin-bottom: 30px;
  max-width: 320px;
  line-height: 1.8;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 20px;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links a:hover {
  background: var(--accent);
  color: var(--bg-white);
  border-color: var(--accent);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--bg-white);
  font-size: 18px;
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

.footer-col ul li {
  margin-bottom: 16px;
}

.footer-col ul a {
  color: #8C98A4;
  font-size: 15px;
  transition: var(--transition);
  display: inline-block;
}

.footer-col ul a:hover {
  color: var(--accent);
  transform: translateX(5px);
}

.contact-info li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  color: #8C98A4;
  font-size: 15px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.contact-info i {
  color: var(--accent);
  font-size: 22px;
  margin-top: 2px;
}

.callback-form input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 20px;
  margin-bottom: 16px;
  color: var(--bg-white);
  font-family: var(--font-body);
  border-radius: 2px;
  outline: none;
  transition: var(--transition);
}

.callback-form input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.05);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 30px 0;
  background-color: #070B13;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: #8C98A4;
  font-size: 14px;
}

.footer-bottom-links {
  display: flex;
  gap: 30px;
}

.footer-bottom-links a {
  color: #8C98A4;
  font-size: 14px;
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--accent);
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1200px) {
  .about-container {
    gap: 60px;
  }

  .footer-top {
    grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
  }
}

@media (max-width: 992px) {
  .section {
    padding: 80px 0;
  }

  .about-container {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .experience-badge {
    left: 50%;
    transform: translateX(-50%);
    bottom: -30px;
    padding: 30px;
    width: 80%;
  }

  .experience-badge .years {
    font-size: 40px;
  }

  .slide-title {
    font-size: 50px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 50px;
  }
}

@media (max-width: 1150px) {
  .nav-menu ul {
    gap: 15px;
  }
  .header-container {
    padding: 0 15px;
  }
  #nav-links a {
    font-size: 13px;
    letter-spacing: 0.5px;
  }
  .logo-text {
    font-size: 20px;
  }
  .brand-logo-img {
    height: 85px; 
    margin-bottom: -15px;
  }
}

@media (max-width: 768px) {
  .nav-menu ul {
    display: none;
  }

  .header-action .btn {
    display: none;
  }

  .slide-title {
    font-size: 38px;
  }

  .section-title {
    font-size: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-bottom-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}

.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 576px) {
  .brand-logo-img { height: 65px; margin-bottom: -5px; } 
  .slide-content { padding-top: 150px; } 
  .slide-title { font-size: 32px; }
  .section-title { font-size: 28px; }
  .projects-grid { grid-template-columns: 1fr; }
  .tab-btn { padding: 10px 18px; font-size: 13px; }
  .hero-slider, .slide { height: 100vh; min-height: 600px; }
}