:root {
        --primary-color: #2563eb;
        --secondary-color: #7e22ce;
        --text-color: #1f2937;
        --bg-color: #ffffff;
        --card-bg: #f8fafc;
        --border-color: #e5e7eb;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
          0 2px 4px -1px rgba(0, 0, 0, 0.06);
        --transition: all 0.3s ease;
      }

      .dark-theme {
        --primary-color: #3b82f6;
        --secondary-color: #a855f7;
        --text-color: #f9fafb;
        --bg-color: #111827;
        --card-bg: #1f2937;
        --border-color: #374151;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3),
          0 2px 4px -1px rgba(0, 0, 0, 0.2);
      }

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

      html {
        scroll-behavior: smooth;
      }

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

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

      section {
        padding: 80px 0;
      }

      h1,
      h2,
      h3,
      h4 {
        margin-bottom: 1rem;
        font-weight: 600;
        line-height: 1.2;
      }

      h1 {
        font-size: 3rem;
      }

      h2 {
        font-size: 2.5rem;
        text-align: center;
        margin-bottom: 3rem;
        position: relative;
      }

      h2::after {
        content: "";
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background: linear-gradient(
          to right,
          var(--primary-color),
          var(--secondary-color)
        );
        border-radius: 2px;
      }

      h3 {
        font-size: 1.5rem;
      }

      p {
        margin-bottom: 1rem;
      }

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

      a:hover {
        color: var(--secondary-color);
      }

      .btn {
        display: inline-block;
        padding: 12px 28px;
        background: linear-gradient(
          to right,
          var(--primary-color),
          var(--secondary-color)
        );
        color: white;
        border-radius: 30px;
        font-weight: 500;
        transition: var(--transition);
        border: none;
        cursor: pointer;
        box-shadow: var(--shadow);
      }

      .btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        color: white;
      }

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

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

      /* Header & Navigation */
      header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
        background-color: var(--bg-color);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
      }

      .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
      }

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

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

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

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

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

      .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 {
        width: 100%;
      }

      .theme-toggle {
        background: none;
        border: none;
        color: var(--text-color);
        font-size: 1.2rem;
        cursor: pointer;
        margin-left: 20px;
        transition: var(--transition);
      }

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

      .mobile-menu {
        display: none;
        font-size: 1.5rem;
        cursor: pointer;
      }

      /* Hero Section */
      .hero {
        padding: 150px 0 100px;
        background: linear-gradient(
          135deg,
          rgba(37, 99, 235, 0.1) 0%,
          rgba(126, 34, 206, 0.1) 100%
        );
        text-align: center;
      }

      .hero-content {
        max-width: 800px;
        margin: 0 auto;
      }

      .hero h1 {
        margin-bottom: 1rem;
        animation: fadeIn 1s ease;
      }

      .tagline {
        font-size: 1.5rem;
        color: var(--primary-color);
        margin-bottom: 1.5rem;
        animation: fadeIn 1s ease 0.2s both;
      }

      .intro {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        animation: fadeIn 1s ease 0.4s both;
      }

      .hero-btns {
        display: flex;
        justify-content: center;
        gap: 15px;
        animation: fadeIn 1s ease 0.6s both;
      }

      .email-link {
        margin-top: 2rem;
        display: inline-block;
        animation: fadeIn 1s ease 0.8s both;
      }

      /* About Section */
      .about-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 50px;
        align-items: center;
      }

      .about-text h3 {
        margin-bottom: 1.5rem;
      }

      .skills-container {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        margin-top: 20px;
      }

      .skill {
        padding: 8px 16px;
        background-color: var(--card-bg);
        border-radius: 20px;
        font-size: 0.9rem;
        box-shadow: var(--shadow);
        display: flex;
        align-items: center;
        gap: 5px;
      }

      .skill i {
        color: var(--primary-color);
      }

      /* Achievements Section */
      .achievements {
        background-color: var(--card-bg);
      }

      .timeline {
        position: relative;
        max-width: 800px;
        margin: 0 auto;
      }

      .timeline::after {
        content: "";
        position: absolute;
        width: 4px;
        background-color: var(--primary-color);
        top: 0;
        bottom: 0;
        left: 50%;
        margin-left: -2px;
      }

      .timeline-item {
        padding: 10px 40px;
        position: relative;
        width: 50%;
        animation: fadeIn 1s ease;
      }

      .timeline-item:nth-child(odd) {
        left: 0;
      }

      .timeline-item:nth-child(even) {
        left: 50%;
      }

      .timeline-content {
        padding: 20px;
        background-color: var(--bg-color);
        border-radius: 10px;
        box-shadow: var(--shadow);
        position: relative;
      }

      .timeline-content::after {
        content: "";
        position: absolute;
        width: 20px;
        height: 20px;
        right: -10px;
        background-color: var(--bg-color);
        top: 20px;
        border-radius: 50%;
        z-index: 1;
        border: 4px solid var(--primary-color);
      }

      .timeline-item:nth-child(even) .timeline-content::after {
        left: -10px;
      }

      .timeline-date {
        font-weight: 600;
        color: var(--primary-color);
        margin-bottom: 5px;
      }

      /* Projects Section */
      .projects-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 30px;
      }

      .project-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
      }

      .project-card:hover {
        transform: translateY(-10px);
      }

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

      .project-content {
        padding: 20px;
      }

      .project-tech {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin: 15px 0;
      }

      .tech-tag {
        padding: 5px 10px;
        background-color: var(--bg-color);
        border-radius: 15px;
        font-size: 0.8rem;
      }

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

      /* Resume Section */
      .resume-content {
        text-align: center;
        max-width: 700px;
        margin: 0 auto;
      }

      .certifications {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        margin-top: 30px;
      }

      .cert-card {
        background-color: var(--card-bg);
        padding: 20px;
        border-radius: 10px;
        width: 200px;
        box-shadow: var(--shadow);
        text-align: center;
      }

      .cert-card i {
        font-size: 2rem;
        color: var(--primary-color);
        margin-bottom: 15px;
      }

      /* Blog Section */
      .blog-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 30px;
      }

      .blog-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
      }

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

      .blog-content {
        padding: 20px;
      }

      .blog-meta {
        display: flex;
        justify-content: space-between;
        font-size: 0.8rem;
        color: var(--primary-color);
        margin-bottom: 10px;
      }

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

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

      .contact-info {
        display: flex;
        flex-direction: column;
        gap: 20px;
      }

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

      .contact-item i {
        font-size: 1.5rem;
        color: var(--primary-color);
        width: 40px;
      }

      .contact-form {
        display: flex;
        flex-direction: column;
        gap: 20px;
      }

      .form-group {
        display: flex;
        flex-direction: column;
        gap: 5px;
      }

      .form-group label {
        font-weight: 500;
      }

      .form-group input,
      .form-group textarea {
        padding: 12px;
        border: 1px solid var(--border-color);
        border-radius: 5px;
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: "Poppins", sans-serif;
      }

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

      /* Footer */
      footer {
        background-color: var(--card-bg);
        padding: 40px 0;
        text-align: center;
      }

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

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

      .social-links a:hover {
        background-color: var(--primary-color);
        color: white;
        transform: translateY(-5px);
      }

      .copyright {
        font-size: 0.9rem;
        color: var(--text-color);
        opacity: 0.7;
      }

      /* Animations */
      @keyframes fadeIn {
        from {
          opacity: 0;
          transform: translateY(20px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .fade-in {
        animation: fadeIn 1s ease;
      }

      /* Responsive Design */
      @media (max-width: 992px) {
        .about-content,
        .contact-content {
          grid-template-columns: 1fr;
        }

        .timeline::after {
          left: 31px;
        }

        .timeline-item {
          width: 100%;
          padding-left: 70px;
          padding-right: 25px;
        }

        .timeline-item:nth-child(even) {
          left: 0;
        }

        .timeline-content::after {
          left: 21px;
        }

        .timeline-item:nth-child(even) .timeline-content::after {
          left: 21px;
        }
      }

      @media (max-width: 768px) {
        .nav-links {
          display: none;
        }

        .mobile-menu {
          display: block;
        }

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

        .tagline {
          font-size: 1.2rem;
        }

        h2 {
          font-size: 2rem;
        }

        .hero-btns {
          flex-direction: column;
          align-items: center;
        }
      }