:root {
    --primary: #9b87f5;
    --secondary: #7dd3fc;
    --tertiary: #fda4af;
    --dark: #2d3748;
    --light: #f5f5f5;
    --text: #333333;
    --white: #ffffff;
  
    --page-max: 1200px;
    --page-pad: 20px;
    --section-pad: 40px 30px;
    --radius: 12px;
    --radius-sm: 6px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    --border: 1px solid rgba(0, 0, 0, 0.08);
  }
  
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: 'Arial', 'Helvetica', sans-serif;
    background:
      radial-gradient(circle at 20% 50%, rgba(155, 135, 245, 0.15), transparent),
      radial-gradient(circle at 80% 50%, rgba(125, 211, 252, 0.15), transparent),
      var(--light);
    background-attachment: fixed;
    color: var(--text);
    line-height: 1.6;
    font-size: clamp(15px, 1vw + 12px, 17px);
  }
  
  a {
    color: var(--primary);
    text-decoration: none;
  }
  
  a:visited {
    color: var(--tertiary);
  }
  
  ::selection {
    background: rgba(125, 211, 252, 0.4);
    color: var(--dark);
  }
  
  

  .site-header {
    background: var(--dark);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }
  
  .nav {
    width: min(100%, var(--page-max));
    margin: 0 auto;
    padding: 18px var(--page-pad);
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
  
    .nav-links {
      justify-self: end;
      display: flex;
      gap: 8px;
  
      a {
        color: var(--white);
        font-size: 16px;
        padding: 8px 14px;
        border-radius: 5px;
        transition: background 0.2s, color 0.2s;
  
        &:visited { color: var(--white); }
        &:hover   { color: var(--secondary); text-decoration: underline; }
        &:active  { opacity: 0.7; }
        &:focus   { outline: 2px solid var(--secondary); outline-offset: 4px; }
  
        &.active {
          background: var(--primary);
          color: var(--white);
          font-weight: 700;
  
          &:visited { color: var(--white); }
        }
      }
    }
  }
  
  .logo {
    font-weight: 700;
    font-size: 24px;
    color: var(--primary);
  
    &:hover   { color: var(--secondary); }
    &:visited { color: var(--primary); }
  }
  
  

  .banner {
    min-height: 450px;
    background-image: url("https://images.unsplash.com/photo-1517694712202-14dd9538aa97?w=1200");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
  
    &::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg,
                  rgba(155, 135, 245, 0.75),
                  rgba(125, 211, 252, 0.75));
    }
  }
  
  .banner-content {
    width: min(100%, var(--page-max));
    margin: 0 auto;
    padding: 120px var(--page-pad);
    position: relative;
    text-align: center;
  
    h1 {
      font-size: clamp(32px, 4vw + 16px, 48px);
      margin: 0 0 16px;
      color: var(--white);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }
  
    p {
      color: var(--white);
      font-size: clamp(16px, 1.5vw + 10px, 20px);
      max-width: 600px;
      margin: 0 auto 28px;
      text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    }
  }
  
  

  .btn {
    display: inline-block;
    background: var(--white);
    color: var(--primary);
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 16px;
    transition: background 0.2s, transform 0.2s;
  
    &:hover {
      background: var(--secondary);
      color: var(--dark);
      transform: translateY(-2px);
    }
  
    &:visited { color: var(--primary); }
  }
  
  .btn-secondary {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-top: 16px;
    transition: background 0.2s, transform 0.2s;
  
    &:hover {
      background: var(--secondary);
      transform: translateY(-2px);
    }
  
    &:visited { color: var(--white); }
  }
  
  

  .page {
    width: min(100%, var(--page-max));
    margin: 0 auto;
    padding: clamp(20px, 3vw, 40px) var(--page-pad) 60px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  
  
  .section {
    background: var(--white);
    border: var(--border);
    border-radius: var(--radius);
    padding: var(--section-pad);
    box-shadow: var(--shadow);
  
    h2 {
      color: var(--primary);
      font-size: clamp(24px, 2.5vw + 12px, 32px);
      margin: 0 0 20px;
    }
  
    p {
      color: var(--text);
      font-size: 16px;
      line-height: 1.8;
      max-width: 800px;
    }
  }
  
  

  .page-header {
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
  
    h1 {
      color: var(--white);
      font-size: clamp(28px, 3.5vw + 14px, 42px);
      margin: 0 0 12px;
    }
  
    .subtitle {
      font-size: clamp(15px, 1.2vw + 10px, 18px);
      color: var(--white);
      opacity: 0.95;
      margin: 0;
    }
  }
  
  
 
  .cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 30px;
  }
  
  .col a.card {
    display: block;
    background: var(--light);
    padding: 16px;
    border-radius: var(--radius);
    border: 2px solid transparent;
    transition: border-color 0.2s, transform 0.2s;
  
    &:hover {
      border-color: var(--secondary);
      transform: translateY(-4px);
  
      img {
        filter: brightness(1.05) contrast(1.05);
      }
    }
  
    img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      display: block;
      border-radius: 8px;
      border: 1px solid rgba(0, 0, 0, 0.1);
    }
  
    h3 {
      margin: 14px 0 8px;
      color: var(--dark);
      font-size: clamp(16px, 1.2vw + 10px, 20px);
    }
  
    p {
      margin: 0;
      color: var(--text);
      font-size: 14px;
      line-height: 1.6;
    }
  }
  
  a[target="_blank"] {
    box-shadow: 0 0 0 3px rgba(253, 164, 175, 0.3);
  }
  
  
  
  .portfolio-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 30px;
    align-items: start;
  
    img,
    video {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      border-radius: 8px;
      border: 1px solid rgba(0, 0, 0, 0.1);
    }
  }
  
  .portfolio-detail-text {
    h3 {
      color: var(--dark);
      margin: 0 0 12px;
      font-size: clamp(18px, 1.5vw + 10px, 22px);
    }
  
    p {
      margin: 0 0 12px;
      line-height: 1.8;
    }
  }
  
  .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
  }
  
  .tag {
    display: inline-block;
    background: rgba(155, 135, 245, 0.12);
    color: var(--primary);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
  }
  
  

  .contact-section,
  .contact-cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
  
    h2 { color: var(--white); }
  
    p,
    .contact-text {
      color: var(--white);
      max-width: 700px;
      margin: 0 auto 20px;
    }
  }
  
  

  .about-content {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .about-text p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
  }
  

  .skills-section {
    background: var(--light);
  }
  
  .skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
  }
  
  .skill-col {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    border: var(--border);
  
    h3 {
      color: var(--primary);
      margin: 0 0 16px;
      font-size: 22px;
    }
  }
  
  .skill-list {
    list-style: none;
    padding: 0;
    margin: 0;
  
    li {
      padding: 8px 0;
      color: var(--text);
      border-bottom: 1px solid rgba(0, 0, 0, 0.05);
      transition: color 0.2s, padding-left 0.2s;
  
      &:last-child { border-bottom: none; }
      &:hover      { color: var(--primary); padding-left: 8px; }
    }
  }
  
  

  .education-section {
    background: var(--white);
  }
  
  .timeline {
    max-width: 800px;
    margin: 30px auto 0;
  }
  
  .timeline-item {
    padding: 24px;
    margin-bottom: 24px;
    background: var(--light);
    border-left: 4px solid var(--primary);
    border-radius: 8px;
    transition: border-left-color 0.2s, transform 0.2s;
  
    &:hover {
      border-left-color: var(--secondary);
      transform: translateX(4px);
    }
  
    h3 {
      color: var(--dark);
      margin: 0 0 8px;
      font-size: clamp(16px, 1.2vw + 10px, 20px);
    }
  
    p {
      margin: 0;
      color: var(--text);
      line-height: 1.7;
    }
  }
  
  .timeline-meta {
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 12px;
  }
  
  

  .contact-info-section {
    background: var(--light);
  }
  
  .contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
  }
  
  .contact-item {
    padding: 24px;
    background: var(--white);
    border-radius: 8px;
    border: var(--border);
  
    h3 {
      color: var(--primary);
      margin: 0 0 12px;
      font-size: 18px;
    }
  
    p { margin: 0; color: var(--text); }
  
    a {
      color: var(--primary);
      &:hover { color: var(--secondary); text-decoration: underline; }
    }
  }
  
  

  .contact-form-container {
    max-width: 700px;
    margin: 30px auto 0;
  }
  
  .form-field {
    margin-bottom: 20px;
  
    label {
      display: block;
      color: var(--dark);
      font-weight: 600;
      margin-bottom: 8px;
      font-size: 14px;
    }
  
    input,
    textarea {
      width: 100%;
      padding: 12px;
      border: 2px solid rgba(0, 0, 0, 0.1);
      border-radius: var(--radius-sm);
      font-family: inherit;
      font-size: 15px;
      color: var(--text);
      transition: border-color 0.2s;
  
      &:focus {
        outline: none;
        border-color: var(--primary);
      }
    }
  
    textarea {
      resize: vertical;
      min-height: 120px;
    }
  
    button {
      border: none;
      cursor: pointer;
      font-family: inherit;
      transition: transform 0.2s;
  
      &:hover { transform: translateY(-2px); }
    }
  }
  
  
 
  .site-footer {
    background: var(--dark);
    color: var(--white);
    text-align: center;
    padding: 30px var(--page-pad);
    margin-top: 40px;
  
    p {
      margin: 0 0 16px;
      font-size: 14px;
    }
  }
  
  .social-links {
    display: flex;
    justify-content: center;
    gap: 24px;
  
    a {
      color: var(--secondary);
      font-size: 14px;
  
      &:hover { color: var(--tertiary); text-decoration: underline; }
    }
  }
  
  

  @media (max-width: 768px) {
  

    .nav {
      grid-template-columns: 1fr;
      text-align: center;
  
      .nav-links {
        justify-self: center;
        margin-top: 12px;
        flex-wrap: wrap;
        justify-content: center;
      }
    }
  

    .cols {
      grid-template-columns: repeat(2, 1fr);
    }
  
    .skills-grid {
      grid-template-columns: repeat(2, 1fr);
  
      .skill-col:last-child {
        grid-column: 1 / -1;
      }
    }
  
    .portfolio-detail-grid {
      grid-template-columns: 1fr;
    }
  
    .section {
      padding: 30px 20px;
    }
  
    .banner {
      min-height: 350px;
    }
  
    .banner-content {
      padding: 80px var(--page-pad);
    }
  }
  
  

  @media (max-width: 520px) {
  

    .nav {
      padding: 14px var(--page-pad);
  
      .nav-links {
        gap: 4px;
  
        a {
          font-size: 14px;
          padding: 6px 10px;
        }
      }
    }
  
    .cols {
      grid-template-columns: 1fr;
    }
  
    .skills-grid {
      grid-template-columns: 1fr;
  
      .skill-col:last-child {
        grid-column: auto;
      }
    }
  
    .contact-grid {
      grid-template-columns: 1fr;
    }
  
  
    .section {
      padding: 24px 16px;
      border-radius: 8px;
    }
  
  
    .page {
      gap: 20px;
    }
  
   
    .banner {
      min-height: 280px;
      background-attachment: scroll;
    }
  
    .banner-content {
      padding: 60px var(--page-pad);
    }
  
  
    .btn,
    .btn-secondary {
      display: block;
      text-align: center;
    }
  
 
    .timeline-item {
      padding: 18px;
  
      &:hover {
        transform: none;
      }
    }
  }