*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', Verdana, sans-serif;
  background: linear-gradient(160deg, #f8f6ff 0%, #f5f5f7 40%, #f0f4fd 100%);
  margin: 0;
  padding: 0;
  color: #3a3632;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.portfolio-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 2rem;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.portfolio-nav .back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: #7a7a7a;
  text-decoration: none;
  transition: color 0.3s ease;
}

.portfolio-nav .back-link:hover { color: #5b5ea6; }

.portfolio-nav .back-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.portfolio-nav .nav-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  background: #5b5ea6;
  color: #fff;
}

.wrapper {
  margin: 0 auto;
  max-width: 1200px;
  width: 95%;
  padding: 5rem 10px 2rem;
}

#content {
  float: left;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

#header {
  float: left;
  clear: both;
  padding: 2rem 2rem 1rem;
  text-align: center;
  width: 100%;
  border-bottom: 1px solid rgba(91, 94, 166, 0.1);
}

#header h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 0.3rem;
  letter-spacing: -0.02em;
}

#header .subtitle {
  font-size: 0.85rem;
  color: #5b5ea6;
  font-style: italic;
  margin: 0;
}

#main-content {
  padding: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
}

.box {
  float: left;
  margin: 6px;
  padding: 16px;
  width: 285px;
  height: 480px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background-color: #fff;
  border-radius: 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.box:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(91, 94, 166, 0.1);
}

.box img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.box h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: #1a1a1a;
  margin: 0.8rem 0 0.4rem;
  text-align: center;
}

.box p {
  font-size: 0.82rem;
  text-align: center;
  color: #666;
  margin: 0;
}

#footer {
  float: left;
  clear: both;
  padding: 1.2rem 2rem;
  text-align: center;
  width: 100%;
  border-top: 1px solid rgba(91, 94, 166, 0.1);
}

#footer p { margin: 0; font-size: 0.8rem; color: #888; }
#footer a { color: #5b5ea6; text-decoration: none; }
#footer a:hover { text-decoration: underline; }

@media screen and (max-width: 960px) {
  .wrapper {
    max-width: 640px;
  }
}

@media screen and (max-width: 640px) {
  .wrapper {
    width: 100%;
    padding: 4.5rem 0.8rem 1.5rem;
  }
  .box {
    width: 100%;
    height: auto;
    margin: 6px 0;
  }
  #header {
    padding: 1.5rem 1rem 1rem;
  }
  #header h1 {
    word-wrap: break-word;
  }
  #main-content {
    padding: 1rem;
  }
  .portfolio-nav {
    padding: 0.7rem 1rem;
  }
}