/* ===== RESPONSIVE PORTFOLIO WITH MODERN TECHNIQUES ===== */
:root {
  --primary-color: #3b82f6;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --text-color: #1e293b;
  --card-bg: #ffffff;
  --bg-color: #f8fafc;
  --white: #ffffff;
  --border-color: #e2e8f0;
  /* Fluid spacing */
  --spacing-xs: clamp(0.5rem, 1vw, 0.75rem);
  --spacing-sm: clamp(1rem, 2vw, 1.5rem);
  --spacing-md: clamp(1.5rem, 3vw, 2.5rem);
  --spacing-lg: clamp(2rem, 4vw, 3.5rem);
  --spacing-xl: clamp(3rem, 6vw, 5rem);
  /* Fluid typography */
  --text-xs: clamp(0.75rem, 1.5vw, 0.875rem);
  --text-sm: clamp(0.875rem, 2vw, 1rem);
  --text-base: clamp(1rem, 2.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 3vw, 1.25rem);
  --text-xl: clamp(1.25rem, 4vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 5vw, 2rem);
  --text-3xl: clamp(2rem, 6vw, 3rem);
  --text-4xl: clamp(2.5rem, 8vw, 4rem);
  /* Shadows */
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  /* Border radius */
  --border-radius: clamp(0.5rem, 1vw, 0.75rem);
  --border-radius-lg: clamp(0.75rem, 1.5vw, 1rem);
}
/* ===== ENHANCED CONTAINER SYSTEM ===== */
.container {
  container-type: inline-size;
  container-name: portfolio-container;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}
/* ===== ENHANCED HEADER ===== */
.portfolio-header {
  background: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-lg) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.portfolio-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.portfolio-title {
  font-size: var(--text-4xl);
  font-weight: 700;
}
/* ===== ENHANCED NAVIGATION ===== */
.portfolio-nav {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}
.portfolio-nav a {
  color: var(--white);
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: background-color 0.2s;
  font-weight: 500;
}
.portfolio-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}
/* ===== CSS GRID SYSTEM WITH AUTO-FIT ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}
/* ===== SUBGRID IMPLEMENTATION ===== */
.project-card {
  display: grid;
  grid-template-columns: subgrid;
  grid-column: span 1;
  /* Fallback for browsers without subgrid support */
  @supports not (grid-template-columns: subgrid) {
    display: flex;
    flex-direction: column;
  }
}
/* Apply subgrid only when supported */
@supports (grid-template-columns: subgrid) {
  .projects-grid {
    grid-template-rows: auto auto 1fr auto; /* Title, image, description, tags */
  }
  .project-card {
    display: grid;
    grid-template-columns: subgrid;
    grid-template-rows: subgrid;
    grid-column: span 1;
    grid-row: span 1;
  }
  .project-card h3 {
    grid-row: 1;
  }
  .project-card img {
    grid-row: 2;
  }
  .project-card p {
    grid-row: 3;
  }
  .project-card .project-tags {
    grid-row: 4;
    align-self: end;
  }
}
/* ===== CONTAINER QUERIES ===== */
/* When the container is narrow, change the card layout */
@container portfolio-container (min-width: 600px) {
  .project-card {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  .project-card img {
    width: 120px;
    height: 90px;
    object-fit: cover;
    flex-shrink: 0;
  }
  .project-content {
    flex: 1;
  }
}
/* ===== ENHANCED PROJECT CARD ===== */
.project-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.2s;
}
.project-card:hover img {
  transform: scale(1.05);
}
.project-content {
  padding: var(--spacing-lg);
}
.project-content h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-color);
}
.project-content p {
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}
/* ===== ENHANCED TAG SYSTEM ===== */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}
.tag {
  background: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 9999px;
  font-size: var(--text-xs);
  font-weight: 500;
}
/* ===== ENHANCED TYPOGRAPHY ===== */
h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.2;
}
h2 {
  font-size: var(--text-3xl);
  text-align: center;
  margin: var(--spacing-xl) 0;
  color: var(--text-color);
}
/* ===== ENHANCED FOOTER ===== */
.portfolio-footer {
  background: var(--secondary-color);
  color: white;
  text-align: center;
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}
/* ===== RESPONSIVE IMAGES ===== */
img {
  max-width: 100%;
  height: auto;
}
/* ===== UTILITIES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}