* { box-sizing: border-box; }
body {
  margin: 0;
  background: #111;
  color: #eee;
  font-family: system-ui, sans-serif;
}
main {
  max-width: 520px;
  margin: auto;
  padding: 28px 18px;
}
header {
  margin-bottom: 28px;
}
h1 {
  margin: 0 0 8px;
  font-size: 28px;
}
#status {
  font-size: 14px;
  color: #aaa;
}
.menu {
  display: grid;
  gap: 12px;
}
button {
  width: 100%;
  border: 1px solid #333;
  background: #1b1b1b;
  color: #eee;
  padding: 18px;
  border-radius: 14px;
  text-align: left;
  font-size: 24px;
}
button strong {
  display: block;
  font-size: 18px;
  margin-top: 8px;
}
button span {
  display: block;
  color: #999;
  font-size: 13px;
  margin-top: 3px;
}

.view { display: none; }
.view.active { display: block; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.topbar h2 {
  margin: 0;
}

.back {
  width: auto;
  padding: 8px 12px;
  font-size: 20px;
}

.card {
  background: #1b1b1b;
  border: 1px solid #333;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 12px;
  cursor: pointer;
}

.card strong,
.card span,
.card small {
  display: block;
}

.card span {
  margin-top: 8px;
}

.card small {
  color: #999;
  margin-top: 5px;
}

.detail {
  background: #1b1b1b;
  border: 1px solid #333;
  border-radius: 14px;
  padding: 18px;
}

.detail h3 {
  margin-top: 0;
}

.detail label {
  display: block;
  color: #888;
  font-size: 12px;
  margin-top: 16px;
}

.detail p {
  margin: 4px 0;
}

.placeholder h2 {
  margin-top: 20px;
}