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

:root {
  --primary-blue: #2563eb;
  --dark-blue: #1e40af;
  --light-blue: #60a5fa;
  --black: #0f172a;
  --white: #ffffff;
  --gray-light: #f8fafc;
  --gray-medium: #64748b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Poppins", sans-serif;
  line-height: 1.6;
  color: var(--black);
  overflow-x: hidden;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease-out forwards;
}

.slide-in-left {
  animation: slideInLeft 0.8s ease-out forwards;
}

.slide-in-right {
  animation: slideInRight 0.8s ease-out forwards;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.3s ease;
}

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

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--black);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width 0.3s ease;
}

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

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

.mobile-menu {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--black);
  z-index: 1001;
}

.nav-links.mobile-open {
  display: flex;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(15px);
  flex-direction: column;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border-radius: 0 0 20px 20px;
  z-index: 1000;
}

.nav-links.mobile-open li {
  margin: 0.5rem 0;
}

.nav-links.mobile-open a {
  font-size: 1.1rem;
  padding: 0.5rem 0;
  display: block;
  text-align: center;
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gray-light) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.1) 0%,
    transparent 70%
  );
  animation: float 6s ease-in-out infinite;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: 0 2rem;
  z-index: 2;
  position: relative;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h2 {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  color: var(--gray-medium);
  margin-bottom: 1rem;
  font-weight: 500;
}

.hero p {
  font-size: 1.2rem;
  color: var(--gray-medium);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

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

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

.btn-secondary:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-2px);
}

/* Section Styles */
.section {
  padding: 6rem 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  color: var(--black);
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--gray-medium);
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* About Section */
.about {
  background: var(--white);
  position: relative;
  z-index: 10;
  margin-top: 0;
  padding-top: 6rem;
}

.about-content {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 4rem;
  align-items: start;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.about-image {
  position: relative;
  width: 100%;
  max-width: 400px;
  justify-self: center;
}

.about-image-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
  box-shadow: var(--shadow-lg);
}

.about-text {
  width: 100%;
  max-width: none;
}

.about-text h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--black);
  line-height: 1.3;
}

.about-text p {
  color: var(--gray-medium);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  line-height: 1.7;
  text-align: justify;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.skill-tag {
  background: var(--gray-light);
  color: var(--primary-blue);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}

/* Services Section */
.services {
  background: var(--gray-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--light-blue));
  transition: left 0.3s ease;
}

.service-card:hover::before {
  left: 0;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  font-size: 3rem;
  color: var(--primary-blue);
  margin-bottom: 1.5rem;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--black);
}

.service-card p {
  color: var(--gray-medium);
  line-height: 1.6;
}

/* Portfolio Section */
.portfolio {
  background: var(--white);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.8rem 1.5rem;
  background: transparent;
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  position: relative;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  background: var(--white);
}

.portfolio-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.portfolio-image {
  height: 250px;
  background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.portfolio-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-image::before {
  opacity: 1;
}

.portfolio-content {
  padding: 1.5rem;
}

.portfolio-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--black);
}

.portfolio-content p {
  color: var(--gray-medium);
  font-size: 0.9rem;
}

.portfolio-category {
  display: inline-block;
  background: var(--gray-light);
  color: var(--primary-blue);
  padding: 0.3rem 0.8rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-top: 1rem;
}

/* Testimonials Section */
.testimonials {
  background: var(--gray-light);
  position: relative;
}

.testimonial-slider {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.testimonial {
  background: var(--white);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.testimonial p {
  font-size: 1.1rem;
  color: var(--gray-medium);
  margin-bottom: 2rem;
  font-style: italic;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 600;
}

.testimonial-info h4 {
  color: var(--black);
  font-weight: 600;
}

.testimonial-info span {
  color: var(--gray-medium);
  font-size: 0.9rem;
}

/* Contact Section */
.contact {
  background: var(--white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--black);
}

.contact-info p {
  color: var(--gray-medium);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.contact-details {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  color: var(--gray-medium);
}

.contact-item i {
  color: var(--primary-blue);
  font-size: 1.2rem;
  width: 20px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--dark-blue);
  transform: translateY(-3px);
}

.contact-form {
  background: var(--gray-light);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--black);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid transparent;
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--white);
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 3rem 0 2rem;
  position: relative;
}

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--dark-blue);
  transform: translateY(-3px);
}

/* Glassmorphism Elements */
.glass {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero h1 {
    font-size: 40px;
  }
  .hero h2 {
    font-size: 20px;
  }
  .hero p {
    font-size: 12px;
  }
  .mobile-menu {
    display: block;
  }

  .about {
    padding-top: 4rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
    max-width: 600px;
  }

  .about-image {
    justify-self: center;
    max-width: 300px;
  }

  .about-image-placeholder {
    height: 300px;
    font-size: 3rem;
  }

  .about-text {
    text-align: left;
    max-width: 100%;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

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

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

  .btn {
    width: 200px;
  }

  .skills {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 4rem 0;
  }

  .container {
    padding: 0 1rem;
  }

  .hero-content {
    padding: 0 1rem;
  }
}

/* Loading Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* Typing Animation */
.typing-text {
  overflow: hidden;
  border-right: 3px solid var(--primary-blue);
  white-space: nowrap;
  animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
  from,
  to {
    border-color: transparent;
  }
  50% {
    border-color: var(--primary-blue);
  }
}