* {
  box-sizing: border-box;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

body {
  background: #ffffff;
  color: #222;
  padding: 1em;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  padding: 0.5em;
  border-bottom: 1px solid #ccc;
}

nav a {
  margin: 0 5px;
  text-decoration: none;
  color: #000;
}

nav a.active {
  font-weight: bold;
  text-decoration: underline;
}

.container {
  max-width: 800px;
  margin: 2em auto;
}

h1 {
  font-size: 20px;
  margin-bottom: 1em;
}

.tag-buttons {
  margin-bottom: 1em;
}

.tag {
  padding: 5px 10px;
  border: none;
  border-radius: 15px;
  margin-right: 5px;
  font-size: 12px;
  background: #eee;
  cursor: pointer;
}

.tag.blue {
  background-color: #a3cce5;
}

.tag.beige {
  background-color: #d8c6ac;
}

.tag.dark {
  background-color: #222;
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1em;
  margin-top: 1em;
}

.box {
  border: 1px solid #ccc;
  border-radius: 20px;
  padding: 1em;
  background: #fdfdfd;
}

.large {
  height: 150px;
}

.music {
  background-color: #c6dbea;
  position: relative;
}

.music .play-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 50%;
  padding: 10px;
}

.menu button {
  display: block;
  margin-bottom: 10px;
  padding: 0.5em;
  width: 100%;
  background: #fff;
  border: 1px solid #000;
  border-radius: 10px;
  text-align: left;
  font-weight: bold;
}

.calendar .date-circle {
  width: 60px;
  height: 60px;
  background: #444;
  color: #fff;
  border-radius: 50%;
  text-align: center;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

.date {
  font-size: 24px;
  display: block;
}

.month {
  font-size: 12px;
}

footer {
  margin-top: 2em;
  font-size: 12px;
  text-align: center;
  color: #666;
}