:root {
  --primary-color: #2563eb; /* Modern blue */
  --secondary-color: #1e40af; /* Darker blue */
  --accent-color: #3b82f6; /* Light blue */
  --text-dark: #1f2937; /* Dark gray */
  --text-light: #6b7280; /* Light gray */
  --background: #ffffff; /* White */
  --background-alt: #f8fafc; /* Light gray background */
  --border-color: #e5e7eb; /* Border gray */
  --success-color: #10b981; /* Green */
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  --font-primary: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: "Georgia", serif;
  --font-mono: "Consolas", "Monaco", monospace;
}

/* ===================================
   Base Styles
   =================================== */

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

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===================================
   Nav Styles
   =================================== */

.navbar {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 1rem 0;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar .logo {
  margin: 0;
  padding: 0 2rem;
}

.navbar .logo a {
  color: white;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: bold;
  transition: color 0.3s ease;
}

.navbar .logo a:hover {
  color: #dbeafe;
}

.navbar ul {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin: 1rem 0 0 0;
  padding: 0;
  gap: 2rem;
}

.navbar li {
  margin: 0;
}

.navbar ul a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  transition: all 0.3s ease;
  position: relative;
}

.navbar ul a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.navbar ul a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: #dbeafe;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.navbar ul a:hover::after {
  width: 100%;
}

/* ===================================
   Main Content Styles
   =================================== */

main {
  flex: 1;
  padding: 3rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

.page-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
}

/* ===================================
   Home Page Styles
   =================================== */

.home-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.about-image {
  width: 300px;
  height: 300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border-radius: 1rem;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.about-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  z-index: 2;
  position: relative;
}

.about-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  color: var(--text-light);
}

.about-text strong {
  color: var(--primary-color);
  font-weight: 600;
}

.about-text em {
  color: var(--secondary-color);
  font-style: italic;
  font-weight: 500;
}

/* ===================================
   Portfolio Styles
   =================================== */

.project {
  background: var(--background);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin: 2rem 0;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.project img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project:hover img {
  transform: scale(1.05);
}

.project-details {
  padding: 2rem;
  background: var(--background);
}

.project-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.project-description {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.project-details a {
  display: inline-block;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  color: white;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.project-details a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===================================
   Resume Styles
   =================================== */

.resume {
  max-width: 900px;
  margin: 0 auto;
}

.resume a[download] {
  display: inline-block;
  background: linear-gradient(135deg, var(--success-color), #059669);
  color: white;
  text-decoration: none;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  margin: 0 auto 3rem auto;
  display: block;
  text-align: center;
  max-width: 200px;
  transition: all 0.3s ease;
}

.resume a[download]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.section {
  background: var(--background-alt);
  margin-bottom: 2rem;
  border-radius: 1rem;
  padding: 2rem;
  border-left: 4px solid var(--primary-color);
  box-shadow: var(--shadow);
}

.section-title {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.entry {
  background: var(--background);
  padding: 1.5rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  border-left: 3px solid var(--accent-color);
}

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

.entry-title {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.entry-info {
  color: var(--text-light);
  font-weight: 500;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.entry-description {
  color: var(--text-light);
  line-height: 1.6;
}

.skill-list,
.course-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.5rem;
}

.skill-list li,
.course-list li {
  background: var(--background);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border-left: 3px solid var(--accent-color);
  transition: all 0.3s ease;
}

.skill-list li:hover,
.course-list li:hover {
  transform: translateX(5px);
  background: #eff6ff;
}

/* ===================================
   Contact Form Styles
   =================================== */

#contact-form {
  max-width: 600px;
  margin: 2rem auto;
  background: var(--background-alt);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
}

#contact-form input,
#contact-form textarea {
  width: 100%;
  padding: 1rem;
  margin-bottom: 1.5rem;
  border: 2px solid var(--border-color);
  border-radius: 0.5rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

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

#contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

#contact-form input[type="submit"] {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-bottom: 0;
}

#contact-form input[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===================================
   Blog Styles
   =================================== */

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

.blog-content p {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

/* ===================================
   Footer Styles
   =================================== */

.footer {
  background: linear-gradient(135deg, var(--text-dark), #374151);
  color: white;
  text-align: center;
  padding: 2rem 0;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
  .navbar ul {
    flex-direction: column;
    gap: 0.5rem;
  }

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

  main {
    padding: 2rem 1rem;
  }

  .home-content {
    gap: 1.5rem;
  }

  .project {
    margin: 1rem 0;
  }

  .skill-list,
  .course-list {
    grid-template-columns: 1fr;
  }

  #contact-form {
    margin: 1rem;
    padding: 1.5rem;
  }
}
@media (max-width: 480px) {
  .navbar .logo {
    padding: 0 1rem;
  }

  .navbar .logo a {
    font-size: 1.2rem;
  }

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

  .about-image {
    width: 200px;
    height: 200px;
  }
}

/* ===================================
   Animation and Transitions
   =================================== */

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section,
.project,
#contact-form {
  animation: slideInUp 0.6s ease-out;
}

/* ===================================
   Utility Classes
   =================================== */

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

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

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

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

.bg-secondary {
  background-color: var(--secondary-color);
}

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

.shadow-lg {
  box-shadow: var(--shadow-lg);
}