/* Global Styles */
:root {
  --primary-color: #0a192f;
  --secondary-color: #112240;
  --accent-color: #64ffda;
  --text-primary: #e6f1ff;
  --text-secondary: #8892b0;
  --blue-accent: #1e90ff;
  --section-light: #1a2942;
  --section-dark: #0a192f;
  --black-primary: #0a0a0a;
  --black-secondary: #121212;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(to right, var(--black-primary), var(--primary-color));
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

ul {
  list-style: none;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  color: var(--text-primary);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--blue-accent);
}

section {
  padding: 80px 0;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border: none;
  border-radius: 5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  cursor: pointer;
  font-size: 14px;
}

.btn.primary {
  background-color: var(--blue-accent);
  color: var(--black-primary);
}

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

.btn.primary:hover {
  background-color: rgba(30, 144, 255, 0.8);
  transform: translateY(-3px);
}

.btn.secondary:hover {
  background-color: rgba(30, 144, 255, 0.1);
  transform: translateY(-3px);
}

/* Header Styles */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(10, 25, 47, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  padding: 15px 0;
}

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

.logo-text {
  font-size: 2rem;
  font-weight: bold;
  color: var(--blue-accent);
}

/* Ensure logo fits and doesn't expand header */
.logo-image {
  max-height: 44px;
  width: auto;
  display: block;
  transition: var(--transition);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--blue-accent);
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 3px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

nav ul {
  display: flex;
}

nav ul li {
  margin-left: 30px;
}

nav ul li a {
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--blue-accent);
  transition: var(--transition);
}

nav ul li a:hover {
  color: var(--blue-accent);
}

nav ul li a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(
      to bottom,
      rgba(10, 25, 47, 1) 0%,
      rgba(10, 25, 47, 0.95) 30%,
      rgba(10, 25, 47, 0.85) 100%
    ),
    url('https://images.unsplash.com/photo-1607799279861-4dd421887fb3?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}


.hero-content {
  max-width: 800px;
}

.hero-content h1 {
  font-size: 4rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.hero-content h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--blue-accent);
}

.hero-content p {
  font-size: 1.5rem;
  margin-bottom: 30px;
  color: var(--text-secondary);
}

/* Fade-in animation for hero tagline */
.hero-tagline {
  opacity: 0;
  animation: fadeInUp 1.2s ease-out forwards;
  animation-delay: 0.6s;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cta-buttons {
  display: flex;
  gap: 20px;
}

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

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-text p {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.about-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-image img {
  width: 100%;
  max-width: 340px;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Education Section */
.education {
  background-color: var(--section-dark);
}

.education-item {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  max-width: 900px;
  margin: 0 auto;
}

.education-item h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--blue-accent);
}

.institution {
  font-style: italic;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.relevant-courses h4 {
  margin-bottom: 10px;
  color: var(--text-primary);
}

.relevant-courses ul {
  list-style: disc;
  padding-left: 20px;
}

.relevant-courses ul li {
  margin-bottom: 5px;
  color: var(--text-secondary);
}

/* Experience Section */
.experience {
  background-color: var(--section-light);
}

.experience-item {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 10px;
}

.experience-header h3 {
  font-size: 1.5rem;
  color: var(--blue-accent);
}

.date {
  color: var(--text-secondary);
  font-style: italic;
}

.company {
  margin-bottom: 20px;
  color: var(--text-primary);
  font-weight: 500;
}

.responsibilities {
  list-style: disc;
  padding-left: 20px;
}

.responsibilities li {
  margin-bottom: 10px;
  color: var(--text-secondary);
}

/* Skills Section */
.skills {
  background-color: var(--section-dark);
}

.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.skill-category {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.skill-category h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--blue-accent);
  text-align: center;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-item {
  background-color: var(--primary-color);
  color: var(--text-primary);
  padding: 8px 15px;
  border-radius: 5px;
  font-size: 0.9rem;
  transition: var(--transition);
}

.skill-item:hover {
  background-color: var(--blue-accent);
  color: var(--black-primary);
  transform: translateY(-3px);
}

/* Languages Section */
.languages {
  background-color: var(--section-light);
}

.languages-container {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
}

.language-item {
  background-color: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  width: 200px;
  text-align: center;
  transition: var(--transition);
}

.language-item:hover {
  transform: translateY(-10px);
}

.language-name {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--blue-accent);
}

.language-level {
  color: var(--text-secondary);
}

/* Projects Section */
.projects {
  background-color: var(--section-dark);
}

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

.project-card {
  background-color: var(--secondary-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.project-content {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-content h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--blue-accent);
}

.project-description {
  margin-bottom: 20px;
  color: var(--text-secondary);
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 15px;
}

.project-tech span {
  background-color: var(--primary-color);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
}

.project-links {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.project-link {
  color: var(--blue-accent);
  font-size: 0.9rem;
  text-decoration: underline;
  transition: var(--transition);
}

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

.project-status {
  display: inline-block;
  background-color: rgba(30, 144, 255, 0.2);
  color: var(--blue-accent);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 600;
  align-self: flex-start;
}

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

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--secondary-color);
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--primary-color);
  background-color: var(--primary-color);
  color: var(--text-primary);
  border-radius: 5px;
  font-family: inherit;
  font-size: 1rem;
}

.form-group textarea {
  height: 150px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-accent);
}

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

/* Footer */
footer {
  background-color: var(--black-primary);
  padding: 30px 0;
  border-top: 1px solid var(--secondary-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

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

.social-links a {
  font-size: 1.5rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--blue-accent);
  transform: translateY(-3px);
}

/* Responsive Design */
@media screen and (max-width: 768px) {
  /* Header adjustments */
  header {
    padding: 10px 0;
    height: 56px;
  }

  .logo-image {
    max-height: 32px;
  }

  /* Mobile Menu */
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 56px;
    left: -100%;
    width: 100%;
    background-color: rgba(10, 25, 47, 0.98);
    transition: var(--transition);
    padding: 20px 0;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  }

  .nav-menu.active {
    left: 0;
  }

  nav ul {
    flex-direction: column;
    align-items: center;
  }

  nav ul li {
    margin: 15px 0;
  }

  nav ul li a {
    font-size: 1.2rem;
    padding: 10px 20px;
    display: block;
  }

  /* Hero Section */
  .hero {
    background-attachment: scroll;
    padding: 80px 0 40px;
  }

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

  .hero-content h2 {
    font-size: 1.8rem;
  }

  .hero-content p {
    font-size: 1.2rem;
  }

  /* About Section */
  .about-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-image {
    order: -1;
  }

  .about-text p {
    font-size: 1rem;
  }

  /* Experience Section */
  .experience-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .experience-item,
  .education-item,
  .contact-form {
    padding: 20px;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  /* Buttons */
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .cta-buttons .btn {
    width: 100%;
    text-align: center;
  }

  /* Sections */
  section {
    padding: 60px 0;
  }

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

  /* Skills Grid */
  .skills-container {
    grid-template-columns: 1fr;
  }

  /* Projects Grid */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Language Items */
  .language-item {
    width: 150px;
    padding: 20px;
  }

  .language-name {
    font-size: 1.2rem;
  }
}

@media screen and (max-width: 480px) {
  header {
    padding: 8px 0;
    height: 50px;
  }

  .nav-menu {
    top: 50px;
  }

  .logo-image {
    max-height: 28px;
  }

  .container {
    width: 95%;
    padding: 0 10px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content h2 {
    font-size: 1.5rem;
  }

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

  .section-title {
    font-size: 1.8rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 12px;
  }

  .project-content h3,
  .education-item h3,
  .experience-header h3 {
    font-size: 1.2rem;
  }

  .skill-category {
    padding: 20px;
  }

  .language-item {
    width: 130px;
    padding: 15px;
  }
}

/* Touch Device Improvements */
@media (hover: none) and (pointer: coarse) {
  .btn {
    padding: 15px 30px;
    font-size: 16px;
  }

  nav ul li a {
    padding: 15px 20px;
    font-size: 1.1rem;
  }

  .project-card:active {
    transform: translateY(-5px);
  }

  .skill-item:active {
    background-color: var(--blue-accent);
    color: var(--black-primary);
  }
}