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

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background-color: #0e0e0e;
  color: #e0e0e0;
  line-height: 1.6;
}

a {
  color: #ffd700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header */
header {
  background-color: #1a1a2e;
  border-bottom: 3px solid #ffd700;
  text-align: center;
  padding: 3rem 1rem;
}

header h1 {
  font-size: 2.8rem;
  color: #ffd700;
  margin: 0 0 0.5rem;
  letter-spacing: 1px;
}

header p {
  font-size: 1.1rem;
  color: #aaa;
  margin: 0 0 1.2rem;
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #e0e0e0;
  font-size: 0.95rem;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
  transition: border-color 0.2s, color 0.2s;
}

.github-link:hover {
  border-color: #ffd700;
  color: #ffd700;
  text-decoration: none;
}

.github-icon {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Section headings */
h2 {
  font-size: 2rem;
  color: #ffd700;
  margin: 0 0 2rem;
}

h3 {
  font-size: 1.2rem;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #2a2a2a;
}

/* Project section */
.projects {
  padding: 2.5rem 0;
}

/* Pyramid grid: 4 equal columns, cards span fewer columns near the top */
.pyramid-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

/* Row 1: 1 card — full width */
.pyramid-grid .card:nth-child(1) {
  grid-column: span 4;
}

/* Row 2: 2 cards — half width each */
.pyramid-grid .card:nth-child(2),
.pyramid-grid .card:nth-child(3) {
  grid-column: span 2;
}

/* Rows 3+: 4 cards per row — one-quarter width each */
.pyramid-grid .card:nth-child(n+4) {
  grid-column: span 1;
}

/* Individual card */
.card {
  background-color: #161616;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: #ffd700;
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex: 1 1 auto;
}

/* Language / meta badges */
.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}

.badge-java    { background-color: #b07219; color: #fff; }
.badge-ts      { background-color: #3178c6; color: #fff; }
.badge-js      { background-color: #f1e05a; color: #222; }
.badge-lua     { background-color: #000080; color: #fff; }
.badge-html    { background-color: #e34c26; color: #fff; }
.badge-stars   { background-color: #2a2a2a; color: #ffd700; border: 1px solid #444; }
.badge-private { background-color: #2a2a2a; color: #aaa; border: 1px solid #444; }

/* Category label on each card */
.card-category {
  font-size: 0.7rem;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: auto;
  padding-top: 0.25rem;
}

/* Card description */
.card-desc {
  font-size: 0.9rem;
  color: #bbb;
  margin: 0;
  flex: 1;
}

/* Card links */
.card-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.card-links a {
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffd700;
  border: 1px solid #ffd700;
  border-radius: 4px;
  padding: 0.25rem 0.7rem;
  transition: background-color 0.2s, color 0.2s;
}

.card-links a:hover {
  background-color: #ffd700;
  color: #000;
  text-decoration: none;
}

/* Footer */
footer {
  background-color: #111;
  border-top: 1px solid #222;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
  color: #666;
}

footer a {
  color: #aaa;
}

footer a:hover {
  color: #ffd700;
}

/* Responsive */
@media (max-width: 900px) {
  /* Collapse to 2-column pyramid on medium screens */
  .pyramid-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pyramid-grid .card:nth-child(1) {
    grid-column: span 2;
  }

  .pyramid-grid .card:nth-child(2),
  .pyramid-grid .card:nth-child(3) {
    grid-column: span 1;
  }

  .pyramid-grid .card:nth-child(n+4) {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  header h1 {
    font-size: 2rem;
  }

  .container {
    padding: 1.25rem;
  }

  /* Single column on mobile */
  .pyramid-grid {
    grid-template-columns: 1fr;
  }

  .pyramid-grid .card:nth-child(n) {
    grid-column: span 1;
  }
}