* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #080808;
  color: #f5f5f5;
  font-family: Arial, Helvetica, sans-serif;
}

.container {
  width: min(1100px, 94%);
  margin: auto;
  padding: 24px 0 50px;
}

/* TOPBAR */

.topbar {
  display: flex;
  gap: 15px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.topbar h1 {
  font-size: 26px;
  margin: 10px 0 20px;
}

/* SEARCH */

#search {
  width: 260px;
  padding: 10px 14px;
  border: 1px solid #333;
  border-radius: 10px;
  background: #17151b;
  color: #fff;
  outline: none;
  font-size: 14px;
}

#search::placeholder {
  color: #999;
}

#search:focus {
  border-color: #666;
}

/* SECTION */

h2 {
  font-size: 20px;
  margin: 28px 0 16px;
}

/* FOLDER */

#folders {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.folder-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #17151b;
  border: 1px solid #2c2931;
  border-radius: 18px;
  padding: 20px;
  transition: transform .15s, border-color .15s;
}

.folder-card:hover {
  transform: translateY(-2px);
  border-color: #555;
}

.folder-icon {
  font-size: 44px;
  margin-bottom: 10px;
}

.folder-card > div:last-child {
  font-size: 17px;
}

/* VIDEO GRID */

#videos {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

/* VIDEO CARD */

.video-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #17151b;
  border: 1px solid #2c2931;
  border-radius: 18px;
  overflow: hidden;
  transition: transform .15s, border-color .15s;
}

.video-card:hover {
  transform: translateY(-2px);
  border-color: #555;
}

/* THUMBNAIL */

.thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
}

/* GAMBAR THUMBNAIL */

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

/* LOGO PLAY */

.thumb::after {
  content: "▶";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  width: 58px;
  height: 58px;

  display: flex;
  align-items: center;
  justify-content: center;

  background: rgba(210, 40, 80, 0.9);
  color: #fff;

  border-radius: 50%;

  font-size: 24px;
  padding-left: 3px;

  pointer-events: none;
}

/* TITLE */

.video-title {
  padding: 12px 14px;
  font-size: 15px;
  color: #fff;
}

/* BACK */

.back {
  display: inline-block;
  margin-bottom: 15px;
  color: #fff;
  text-decoration: none;
}

.back:hover {
  text-decoration: underline;
}

/* VIDEO PLAYER */

video {
  max-width: 100%;
}

/* TABLET */

@media (max-width: 800px) {

  #folders,
  #videos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

/* HP */

@media (max-width: 480px) {

  .container {
    width: 94%;
  }

  .topbar {
    align-items: stretch;
  }

  #search {
    width: 100%;
  }

  #folders,
  #videos {
    grid-template-columns: 1fr;
  }

}