@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

:root {
  --bg: #080c10;
  --text: #f5f7fa;
  --muted: #aab4bf;
  --accent: #13d8c2;
  --glass: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.12);
  --radius: 20px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", sans-serif;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, #13d8c235 0%, #091015 70%);
  filter: blur(100px);
  opacity: 0.45;
  z-index: -1;
}

/* Header */
.page-header {
  text-align: center;
  padding: 3rem 1rem 1.5rem;
}
.page-header h1 {
  font-size: 2.4rem;
  letter-spacing: 0.2rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.page-header p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Grid layout */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); /* more flexible */
  gap: 1.5rem;
  padding: 2rem 1.2rem 3rem;
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
}

/* Category Card */
.category-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 1.8rem 1.2rem;
  text-align: center;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.35);
  transition: transform 0.5s ease, box-shadow 0.5s ease, border 0.5s ease;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.95) translateY(20px);
  animation: cardIn 1s ease forwards;
}
.category-card:nth-child(n) { animation-delay: calc(var(--i, 0) * 0.1s); }

.category-card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(19, 216, 194, 0.4);
  border-color: var(--accent);
}
.category-card:hover .category-icon {
  transform: scale(1.15);
  filter: drop-shadow(0 0 8px var(--accent));
}

.category-icon {
  font-size: 2.4rem;
  margin-bottom: 0.9rem;
  color: var(--accent);
  transition: transform 0.4s ease, filter 0.4s ease;
}
.category-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.06rem;
  text-transform: uppercase;
}
.category-desc {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Animations */
@keyframes cardIn {
  0% { opacity: 0; transform: scale(0.9) translateY(20px) rotateX(6deg); }
  100% { opacity: 1; transform: scale(1) translateY(0) rotateX(0); }
}

/* Footer */
.page-footer {
  text-align: center;
  padding: 1.5rem 0;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

/* ✅ Responsive fixes */
@media (max-width: 900px) {
  .page-header h1 { font-size: 2rem; }
  .page-header p { font-size: 0.95rem; }
  .category-grid { gap: 1.2rem; padding: 1.5rem; }
}

@media (max-width: 600px) {
  .category-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    padding: 1.2rem;
  }
  .category-card {
    padding: 1.2rem 1rem;
    border-radius: 16px;
  }
  .category-icon { font-size: 2rem; }
  .category-title { font-size: 0.95rem; }
  .category-desc { font-size: 0.82rem; }
}