/* Base Styles */
:root {
  --primary-color: #4361ee;
  --primary-dark: #3a56d4;
  --secondary-color: #2b2d42;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --gray-color: #6c757d;
  --light-gray: #e9ecef;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --danger-color: #f44336;
  --transition: all 0.3s ease;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --box-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.15);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: var(--light-color);
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.subtitle {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 15px;
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 20px;
}

.lead {
  font-size: 1.2rem;
  font-weight: 300;
}

.description {
  color: var(--gray-color);
  margin-bottom: 30px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-size: 16px;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--box-shadow);
}

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

.btn-outline:hover {
  background-color: var(--light-color);
  color: var(--dark-color);
  transform: translateY(-3px);
  box-shadow: var(--box-shadow);
}

.btn-outline.dark {
  border-color: var(--dark-color);
  color: var(--dark-color);
}

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

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: var(--transition);
  padding: 20px 0;
}

header.scrolled {
  background-color: var(--dark-color);
  padding: 15px 0;
  box-shadow: var(--box-shadow);
}

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

.logo a {
  font-size: 24px;
  font-weight: 700;
  color: var(--light-color);
  letter-spacing: 1px;
}

.logo span {
  color: var(--primary-color);
}

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

.nav-links a {
  color: var(--light-color);
  font-weight: 500;
  position: relative;
}

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

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

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

.menu-btn {
  display: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-btn__burger {
  width: 30px;
  height: 3px;
  background-color: var(--light-color);
  border-radius: 5px;
  transition: var(--transition);
  position: relative;
}

.menu-btn__burger::before,
.menu-btn__burger::after {
  content: '';
  position: absolute;
  width: 30px;
  height: 3px;
  background-color: var(--light-color);
  border-radius: 5px;
  transition: var(--transition);
}

.menu-btn__burger::before {
  transform: translateY(-10px);
}

.menu-btn__burger::after {
  transform: translateY(10px);
}

/* OPEN */
.menu-btn.open .menu-btn__burger {
  transform: translateX(-50px);
  background: transparent;
}

.menu-btn.open .menu-btn__burger::before {
  transform: rotate(45deg) translate(35px, -35px);
}

.menu-btn.open .menu-btn__burger::after {
  transform: rotate(-45deg) translate(35px, 35px);
}

/* Hero Section */
.hero {
  height: 100vh;
  background-image: url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  color: var(--light-color);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero h1 {
  margin-bottom: 10px;
}

.hero h2 {
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--light-color);
  font-size: 30px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) translateX(-50%);
  }
  40% {
    transform: translateY(-20px) translateX(-50%);
  }
  60% {
    transform: translateY(-10px) translateX(-50%);
  }
}

/* About Section */
.about {
  background-color: var(--light-color);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
  align-items: center;
}

.about-image img {
  border-radius: 10px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.about-image img:hover {
  transform: scale(1.02);
  box-shadow: var(--box-shadow-hover);
}

.skills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 30px 0;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

.skill-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}

.skill-text h3 {
  font-size: 18px;
  margin-bottom: 5px;
}

.skill-text p {
  font-size: 14px;
  color: var(--gray-color);
  margin-bottom: 0;
}

.about-buttons {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

/* Services Section */
.services {
  background-color: white;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.service-card {
  background-color: var(--light-color);
  border-radius: 10px;
  padding: 40px 30px;
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

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

.service-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(67, 97, 238, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  font-size: 30px;
  color: var(--primary-color);
}

.service-card h3 {
  margin-bottom: 15px;
}

.service-card p {
  color: var(--gray-color);
  margin-bottom: 0;
}

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

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.portfolio-item {
  background-color: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.portfolio-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-hover);
}

.portfolio-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(67, 97, 238, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-link {
  width: 50px;
  height: 50px;
  background-color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 24px;
  transform: translateY(20px);
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-link {
  transform: translateY(0);
}

.portfolio-content {
  padding: 25px;
}

.portfolio-category {
  display: inline-block;
  background-color: rgba(67, 97, 238, 0.1);
  color: var(--primary-color);
  padding: 5px 15px;
  border-radius: 50px;
  font-size: 14px;
  margin-bottom: 15px;
}

.portfolio-content h3 {
  margin-bottom: 10px;
}

.portfolio-content p {
  color: var(--gray-color);
  margin-bottom: 0;
}



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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
}

.contact-info h3 {
  margin-top: 0;
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}

.contact-text p {
  margin-bottom: 5px;
  color: var(--gray-color);
}

.contact-text a {
  font-weight: 500;
  color: var(--dark-color);
}

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

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark-color);
  transition: var(--transition);
}

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

.contact-form {
  background-color: white;
  border-radius: 10px;
  padding: 40px;
  box-shadow: var(--box-shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-family: inherit;
  font-size: 16px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: var(--light-color);
  padding: 30px 0;
}

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

.footer-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--light-color);
  letter-spacing: 1px;
}

.footer-logo span {
  color: var(--primary-color);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-5px);
}

/* Media Queries */
@media (max-width: 992px) {
  h1 {
    font-size: 2.8rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .about-image {
    max-width: 500px;
    margin: 0 auto;
  }
  
  .menu-btn {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--dark-color);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    z-index: 1000;
  }
  
  .nav-links.show {
    right: 0;
  }
}

@media (max-width: 768px) {
  section {
    padding: 80px 0;
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .skills {
    grid-template-columns: 1fr;
  }
  
  .services-grid,
  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  
  
  .footer-content {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 10px;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .about-buttons {
    flex-direction: column;
    gap: 10px;
  }
  
  .about-buttons .btn {
    width: 100%;
  }
  
  .contact-form {
    padding: 25px;
  }
}