:root {
  /* Apple-esque Dark Mode Palette */
  --bg-body: #000000;
  --bg-card: #1c1c1e;
  --bg-card-hover: #2c2c2e;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --accent-blue: #0A84FF;
  --accent-glass: rgba(255, 255, 255, 0.1);
  --border-glass: rgba(255, 255, 255, 0.1);
  --shadow-subtle: 0 10px 40px rgba(0,0,0,0.5);
  --radius-xl: 28px;
  --radius-md: 18px;
  --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
                Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background-color: var(--bg-body);
  color: var(--text-primary);
  font-family: var(--font-stack);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  /* Subtle background */
  background: radial-gradient(circle at top left, #1a1a1a, #000000);
}

.container {
  width: 100%;
  max-width: 1000px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

header {
  text-align: left;
  padding-left: 10px;
  animation: fadeIn 0.8s ease-out;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(90deg, #fff, #86868b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

p.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  perspective: 1000px;
}

.card {
  display: block;
  text-decoration: none;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 30px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 1px solid var(--border-glass);
  overflow: hidden;
  height: 280px;
  cursor: pointer;
  box-shadow: var(--shadow-subtle);
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
}

.card-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
  z-index: 2;
  position: relative;
}

.tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.card-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 5px;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.arrow-icon {
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: flex-end;
  transition: transform 0.3s ease, background 0.3s ease;
}

.card:hover .arrow-icon {
  background: var(--text-primary);
  transform: rotate(45deg);
}

.card:hover .arrow-icon svg path {
  stroke: #000;
}

/* Blobs */
.blob {
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  z-index: 0;
  transition: opacity 0.5s ease;
}

.card:hover .blob { opacity: 0.6; }

/* Per-card blob color */
.card-1 .blob { background: #0052CC; top: -50px; right: -50px; } /* Jira Blue */
.card-2 .blob { background: #FF5630; bottom: -50px; left: -50px; } /* Atlassian Red/Orange */
.card-3 .blob { background: #34C759; top: 40%; left: 40%; width: 200px; } /* iOS Glass Green */
.card-4 .blob { background: #AF52DE; top: -60px; left: -20px; } /* Pro Purple */

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  .bento-grid { grid-template-columns: 1fr; }
  .card { height: 220px; }
  body { height: auto; padding: 40px 0; overflow-y: auto; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}