* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
               Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: #fafafa;
  color: #222;
}

header {
  padding: 1rem 2rem;
  border-bottom: 1px solid #e5e5e5;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 600;
  gap: .25rem;
}

.logo .icon {
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1;
}

.subscribe-btn {
  padding: .5rem 1rem;
  background: #000;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.container {
  display: flex;
  max-width: 1440px;
  margin: 0 auto;
}

.sidebar {
  width: 260px;
  padding: 1.5rem 2rem;
  border-right: 1px solid #e5e5e5;
}

.sidebar h2 {
  font-size: 1rem;
  margin: 0 0 1rem 0;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #555;
}

.sidebar label {
  display: block;
  margin-top: 1rem;
  font-size: .85rem;
  color: #444;
}

.sidebar select,
.sidebar button {
  width: 100%;
  padding: .55rem .75rem;
  margin-top: .35rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  font-size: .9rem;
}

.sidebar button {
  cursor: pointer;
  background: #222;
  color: #fff;
  margin-top: 1.5rem;
  border: none;
}

.grid {
  flex: 1;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  position: relative;
  padding: 1.5rem;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
  display: flex;
  flex-direction: column;
}

.card.premium.locked {
  filter: blur(2px);
  pointer-events: none;
}

.card h3 {
  margin: 0 0 .5rem 0;
  font-size: 1rem;
  font-weight: 600;
}

.card small {
  color: #777;
  margin-bottom: .5rem;
}

.card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: .9rem;
}

.card ul li {
  display: flex;
  justify-content: space-between;
  padding: .2rem 0;
}

.lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.65);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
}