/* CSS Variables for theming */
:root {
  --primary-color: #4361ee;
  --secondary-color: #3a0ca3;
  --accent-color: #7209b7;
  --text-color: #333;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --border-color: #e0e0e0;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Dark mode variables */
[data-theme="dark"] {
  --primary-color: #4895ef;
  --secondary-color: #560bad;
  --accent-color: #b5179e;
  --text-color: #f5f5f5;
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --border-color: #333;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Open Sans', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: var(--transition);
}

h1,
h2,
h3 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: var(--primary-color);
}

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

section {
  padding: 60px 0;
}

/* Header and Navigation */
header {
  background-color: var(--card-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 10px;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

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

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  font-size: 1.1rem;
  transition: var(--transition);
}

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

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  padding-top: 4px;
  transition: var(--transition);
}

.theme-toggle:hover {
  color: var(--primary-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-color);
  cursor: pointer;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 0;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.hero p {
  font-size: 1.5rem;
  color: var(--text-color);
  max-width: 700px;
  margin: 0 auto;
}

/* Main Grid Layout */
.main-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.grid-column {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.grid-column:hover {
  transform: translateY(-5px);
}

.grid-column h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
}

/* Projects List */
.projects-list {
  list-style: none;
}

.projects-list li {
  padding: 15px 0;
  border-bottom: 1px solid var(--border-color);
}

.projects-list li:last-child {
  border-bottom: none;
}

/* Work Experience */
.job {
  margin-bottom: 25px;
}

.job:last-child {
  margin-bottom: 0;
}

.job h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--secondary-color);
}

.job p {
  margin-bottom: 10px;
}

.job a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.job a:hover {
  text-decoration: underline;
}

/* Education Section */
.education-details p {
  margin-bottom: 15px;
}

.courses-list {
  list-style: none;
  margin-top: 15px;
}

.courses-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
}

.courses-list li:before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
  font-size: 1.2rem;
}

/* Reviews Section */
.reviews {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.reviews h2 {
  text-align: center;
  margin-bottom: 40px;
}

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

.review-card {
  background: var(--bg-color);
  border-radius: 8px;
  padding: 25px;
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-5px);
}

.review-text {
  font-style: italic;
  margin-bottom: 20px;
  position: relative;
}

.review-text:before {
  content: "";
  font-size: 3rem;
  color: var(--primary-color);
  opacity: 0.3;
  position: absolute;
  top: -20px;
  left: -10px;
}

.review-author {
  font-weight: 600;
  color: var(--primary-color);
}

.review-position {
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.8;
}

/* Page Header */
.page-header {
  text-align: center;
  padding: 60px 0;
  background: linear-gradient(135deg, rgba(67, 97, 238, 0.1), rgba(114, 9, 183, 0.1));
  border-radius: 0 0 20px 20px;
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 2.8rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-header p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
  color: var(--text-color);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.project-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.project-image {
  height: 200px;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.project-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-content h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.project-content p {
  margin-bottom: 20px;
  flex-grow: 1;
}

.technologies {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tech-pill {
  background-color: rgba(67, 97, 238, 0.1);
  color: var(--primary-color);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 15px;
  margin-top: auto;
}

.project-links a {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

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

.demo-link:hover {
  background-color: var(--secondary-color);
}

.code-link {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.code-link:hover {
  background-color: rgba(67, 97, 238, 0.1);
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.article-card {
  background: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.article-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.article-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-content h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.article-meta {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.8;
}

.article-meta span {
  margin-right: 15px;
}

.article-meta i {
  margin-right: 5px;
  color: var(--primary-color);
}

.article-content p {
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tag-pill {
  background-color: rgba(67, 97, 238, 0.1);
  color: var(--primary-color);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.read-more {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  text-align: center;
  margin-top: auto;
}

.read-more:hover {
  background-color: var(--secondary-color);
}

/* Articles Sidebar */
.articles-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}

.sidebar {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 25px;
  box-shadow: var(--shadow);
  height: fit-content;
}

.sidebar h3 {
  font-size: 1.4rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
}

.popular-list {
  list-style: none;
}

.popular-list li {
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.popular-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.popular-list a {
  text-decoration: none;
  color: var(--text-color);
  transition: var(--transition);
  display: block;
}

.popular-list a:hover {
  color: var(--primary-color);
}

.popular-list .article-meta {
  font-size: 0.8rem;
  margin-bottom: 5px;
}

.subscribe-box {
  position: relative;
  margin-bottom: 30px;
}

.subscribe-box input {
  width: 100%;
  padding: 12px 20px 12px 45px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
  transition: var(--transition);
}

.subscribe-box input:focus {
  border-color: var(--primary-color);
  outline: none;
}

/* Contact Section */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.contact-info {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.contact-form {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 40px;
  box-shadow: var(--shadow);
}

.contact-form h2,
.contact-info h2 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
}

.contact-info p {
  margin-bottom: 25px;
}

.contact-methods {
  list-style: none;
  margin-top: 30px;
}

.contact-methods li {
  display: flex;
  align-items: flex-start;
  margin-bottom: 25px;
}

.contact-methods i {
  font-size: 1.5rem;
  color: var(--primary-color);
  min-width: 40px;
  padding-top: 5px;
}

.contact-details {
  margin-left: 15px;
}

.contact-details h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
  color: var(--text-color);
}

.contact-details p,
.contact-details a {
  color: var(--text-color);
  text-decoration: none;
  opacity: 0.9;
  transition: var(--transition);
  margin-bottom: 0;
}

.contact-details a:hover {
  color: var(--primary-color);
  opacity: 1;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-color);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  transition: var(--transition);
}

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

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

.submit-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 14px 30px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
}

.submit-btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

.social-contact {
  display: flex;
  gap: 15px;
  margin-top: 30px;
}

.social-contact a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: white;
  font-size: 1.2rem;
  transition: var(--transition);
  text-decoration: none;
}

.social-contact a:hover {
  background-color: var(--secondary-color);
  transform: translateY(-5px);
}

/* Footer */
footer {
  background: var(--card-bg);
  padding: 30px 0;
  text-align: center;
  margin-top: 60px;
  border-top: 1px solid var(--border-color);
}

.copyright {
  font-size: 0.9rem;
  color: var(--text-color);
}

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

.social-links a {
  color: var(--text-color);
  font-size: 1.2rem;
  transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 900px) {
  .hero h1 {
    font-size: 2.8rem;
  }

  .hero p {
    font-size: 1.3rem;
  }

  .page-header h1 {
    font-size: 2.3rem;
  }

  .page-header p {
    font-size: 1.1rem;
  }

  .articles-container {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: -1;
    margin-bottom: 40px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-container {
    padding: 15px;
  }

  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    background: var(--card-bg);
    width: 100%;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    transition: transform 0.4s ease;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .nav-links li {
    margin: 15px 0;
  }

  .theme-toggle {
    margin-left: 10px;
  }

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

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

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

  .contact-info,
  .contact-form {
    padding: 30px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.3rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .grid-column {
    padding: 20px;
  }

  .reviews {
    padding: 30px 20px;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .page-header p {
    font-size: 1rem;
  }

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

  .project-links {
    flex-direction: column;
    gap: 10px;
  }

  .project-links a {
    text-align: center;
  }

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

  .contact-info,
  .contact-form {
    padding: 25px 20px;
  }
}