@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* 1. CSS Custom Properties */
:root {
  --primary: #1976D2;
  --primary-dark: #0D47A1;
  --primary-light: #42A5F5;
  --accent: #00BCD4;
  --white: #ffffff;
  --light-bg: #f0f4f8;
  --text-dark: #1a1a2e;
  --text-light: #64748b;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
  --gradient: linear-gradient(135deg, #0D47A1 0%, #1976D2 50%, #42A5F5 100%);
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 3. Container */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

/* 4. Section Titles */
.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: auto;
  margin-bottom: 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 10px;
  position: relative;
  padding-left: 35px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 25px;
  height: 2px;
  background: var(--primary);
}

.hero-tagline {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 5. Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 15px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: var(--white);
  box-shadow: var(--shadow);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar.scrolled .nav-logo {
  color: var(--primary-dark);
}

.nav-logo-icon {
  width: 45px;
  height: 45px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.navbar.scrolled .nav-links a {
  color: var(--text-dark);
}

.nav-links a:hover {
  color: var(--primary-light);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-light);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--primary-light);
}

.navbar.scrolled .nav-links a.active {
  color: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--text-dark);
}

/* 6. Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--gradient);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 60px;
  max-width: 1200px;
  margin: auto;
  padding: 0 20px;
}

.hero-text {
  flex: 1;
}

.hero-text h1 {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-text h1 span {
  display: block;
  background: linear-gradient(to right, #00BCD4, #80DEEA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
  max-width: 500px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--white);
  color: var(--primary-dark);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-whatsapp {
  background: #25D366;
  color: var(--white);
}

.btn-whatsapp:hover {
  background: #1da851;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

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

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-container {
  width: 100%;
  max-width: 700px;
  min-height: 600px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: auto;
}

.hero-purifier-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
  animation: float 3s ease-in-out infinite;
}

.hero-badge {
  position: absolute;
  background: var(--white);
  border-radius: 12px;
  padding: 12px 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
  animation: fadeInUp 0.6s ease forwards;
}

.hero-badge-1 {
  top: 20px;
  right: -30px;
  animation-delay: 0.5s;
}

.hero-badge-2 {
  bottom: 60px;
  left: -20px;
  animation-delay: 0.8s;
}

.hero-badge .badge-icon {
  width: 35px;
  height: 35px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.hero-badge-1 .badge-icon {
  background: rgba(25, 118, 210, 0.1);
  color: var(--primary);
}

.hero-badge-2 .badge-icon {
  background: rgba(37, 211, 102, 0.1);
  color: #25D366;
}

/* 7. About */
.about {
  padding: 100px 0;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 4rem;
  box-shadow: var(--shadow);
}

.about-stats {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

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

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-dark);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-light);
}

.about-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.about-content p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-features {
  list-style: none;
  display: grid;
  gap: 12px;
}

.about-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-dark);
  font-weight: 500;
}

.about-features li .check-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(25, 118, 210, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* 8. Products */
.products {
  padding: 100px 0;
  background: var(--light-bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.product-image {
  width: 100%;
  height: 220px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 20px;
}

.product-img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.4s ease;
}

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

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--gradient);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.product-info p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 15px;
  line-height: 1.5;
}

.price-call {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.price-call .call-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--gradient);
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: var(--transition);
}

.price-call .call-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow);
}

/* 9. Services */
.services {
  padding: 100px 0;
  background: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 25px;
}

.service-card {
  background: var(--light-bg);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  background: var(--white);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  background: rgba(25, 118, 210, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 15px;
}

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* 10. Why Choose Us */
.why-us {
  padding: 100px 0;
  background: var(--gradient);
  color: var(--white);
}

.why-us .section-title {
  color: var(--white);
}

.why-us .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 25px;
}

.why-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  transition: var(--transition);
}

.why-card:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.why-icon {
  width: 55px;
  height: 55px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto 15px;
}

.why-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.why-card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.5;
}

/* 11. Reviews */
.reviews {
  padding: 100px 0;
  background: var(--light-bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 25px;
}

.review-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

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

.review-stars {
  color: #FFB300;
  font-size: 1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 15px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
}

.review-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
}

.review-info span {
  font-size: 0.8rem;
  color: var(--text-light);
}

.review-card::before {
  content: '"';
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 4rem;
  color: rgba(25, 118, 210, 0.08);
  font-family: Georgia, serif;
  line-height: 1;
}

/* 12. Contact */
.contact {
  padding: 100px 0;
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px;
  background: var(--light-bg);
  border-radius: var(--radius);
  transition: var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow);
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--gradient);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-dark);
}

.contact-details p,
.contact-details a {
  font-size: 0.9rem;
  color: var(--text-light);
  text-decoration: none;
}

.contact-details a:hover {
  color: var(--primary);
}

.contact-form {
  background: var(--light-bg);
  border-radius: var(--radius);
  padding: 35px;
}

.contact-form h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.form-group {
  margin-bottom: 15px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  transition: var(--transition);
  background: var(--white);
  outline: none;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--gradient);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.map-placeholder {
  margin-top: 30px;
  width: 100%;
  height: 250px;
  border-radius: var(--radius);
  background: #e3f2fd;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.9rem;
  border: 2px dashed #bbdefb;
}

/* 13. Floating buttons */
.floating-buttons {
  position: fixed;
  bottom: 25px;
  right: 25px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}

.float-btn {
  width: 55px;
  height: 55px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--white);
  text-decoration: none;
  box-shadow: var(--shadow-hover);
  transition: var(--transition);
  border: none;
  cursor: pointer;
  animation: pulse 2s infinite;
}

.float-btn:hover {
  transform: scale(1.1);
}

.float-whatsapp {
  background: #25D366;
}

.float-call {
  background: var(--primary);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  }

  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* 14. Footer */
.footer {
  background: #0a1628;
  color: var(--white);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 15px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.footer-column h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--white);
  position: relative;
  padding-bottom: 10px;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-light);
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 8px;
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-column ul li a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
}

/* 15. Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-15px);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 {
  transition-delay: 0.1s;
}

.animate-delay-2 {
  transition-delay: 0.2s;
}

.animate-delay-3 {
  transition-delay: 0.3s;
}

.animate-delay-4 {
  transition-delay: 0.4s;
}

/* 16. Responsive */
@media (max-width: 968px) {
  .nav-links {
    display: none;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--white);
    padding: 20px;
    box-shadow: var(--shadow);
    border-radius: 0 0 var(--radius) var(--radius);
  }

  .nav-links.active a {
    color: var(--text-dark);
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    flex-direction: column;
    text-align: center;
    padding-top: 100px;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-image-container {
    width: 280px;
    height: 320px;
  }

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

  .about-stats {
    position: static;
    margin-top: 20px;
  }

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

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

@media (max-width: 600px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

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

/* 17. Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* 18. Back to top button */
.back-to-top {
  position: fixed;
  bottom: 25px;
  left: 25px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--primary-dark);
  color: var(--white);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  border: none;
  font-size: 1.1rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.back-to-top.visible {
  display: flex;
}

.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--primary);
}

.logo-img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  border-radius: 50%;
  background: #fff;
  padding: 4px;
}

.about-img {
  width: 100%;
  max-width: 500px;
  height: 350px;
  object-fit: cover;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
  display: block;
  margin: auto;
}

.hero-img {
  width: 100%;
  max-width: 650px;
  height: 550px;
  object-fit: contain;
  display: block;
  margin: auto;
  transition: 0.3s ease;
}

.hero-img:hover {
  transform: scale(1.03);
}

@media (max-width: 768px) {

  .logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    text-align: center;
    margin: 0 auto;
  }

  .logo img {
    width: 70px;
    height: 70px;
    margin-bottom: 10px;
  }

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

  .logo-text h2,
  .logo-text p {
    text-align: center;
  }

}

@media (max-width:768px){

  .navbar{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:15px;
  }

  .nav-links{
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:15px;
  }
}

@media (max-width:768px){

  .logo-text h2{
    font-size:28px;
    margin:5px 0;
  }

  .logo-text p{
    font-size:16px;
  }

}

@media (max-width:768px){

.hero{
    padding:30px 20px;
}

.hero-content{
    display:flex;
    flex-direction:column;
    align-items:center;
    text-align:center;
    gap:20px;
}

.hero-image img{
    width:100%;
    max-width:320px;
}

}

@media (max-width: 768px) {

    .footer-brand .footer-logo img {
        width: 50px;
        height: auto;
    }

    .footer-brand .footer-logo {
        justify-content: center;
        text-align: center;
    }
}