* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  background: #0f1115;
  color: #f2f4f8;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-header,
.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: #141821;
  position: sticky;
  top: 0;
  z-index: 10;
}

.page-footer {
  position: static;
  border-top: 1px solid #222837;
}

.page-header h1 {
  font-size: 1.25rem;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  padding: 1rem 1.25rem 2rem;
}

.card {
  background: #1a1f2b;
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  border: 1px solid #2a3040;
}

.thumb img {
  display: block;
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.card-body {
  padding: 0.9rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.card-body h2 {
  font-size: 1rem;
  margin: 0;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: #b5bcc9;
}

.actions {
  margin-top: auto;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid #2c3448;
  background: #20283a;
  color: #f2f4f8;
  font-size: 0.85rem;
  cursor: pointer;
}

.btn.primary {
  background: #5b7cfa;
  border-color: #5b7cfa;
  color: #0b0e16;
  font-weight: 600;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem 0.2rem;
  font-size: 0.8rem;
  color: #cbd2df;
}

.checkbox input {
  width: 18px;
  height: 18px;
}

.empty {
  padding: 2rem 1.25rem;
}

.player {
  padding: 1rem 1.25rem 2rem;
}

.player video {
  width: 100%;
  max-height: 70vh;
  border-radius: 12px;
  background: #000;
}

@media (max-width: 600px) {
  .page-header,
  .page-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }
}