body {
  margin: 0;
  background: #101218;
  color: #f3f4f7;
  font-family: Arial, sans-serif;
}

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

aside {
  background: #171a23;
  padding: 24px;
  border-right: 1px solid #2a2f3d;
}

aside h1 {
  margin-top: 0;
}

nav a {
  display: block;
  color: #d9e2ff;
  text-decoration: none;
  padding: 10px 0;
}

main {
  padding: 28px;
}

.card {
  background: #191e29;
  border: 1px solid #2a2f3d;
  border-radius: 14px;
  padding: 18px;
  margin: 16px 0;
}

.card.small {
  max-width: 420px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(150px, 1fr));
  gap: 16px;
}

.big {
  font-size: 42px;
  margin: 0;
}

.row {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 12px;
}

label {
  display: block;
  margin: 10px 0 6px;
}

input, textarea, button {
  font: inherit;
}

input, textarea {
  width: 100%;
  box-sizing: border-box;
  background: #0f1219;
  color: #fff;
  border: 1px solid #33394a;
  border-radius: 8px;
  padding: 10px;
}

input[type="checkbox"] {
  width: auto;
}

textarea {
  min-height: 100px;
}

button {
  background: #5871ff;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 10px;
  cursor: pointer;
}

button.danger {
  background: #d64545;
}

table {
  width: 100%;
  border-collapse: collapse;
}

td, th {
  border-bottom: 1px solid #2a2f3d;
  padding: 10px;
  text-align: left;
}

code, pre {
  background: #0f1219;
  color: #b7c4ff;
  padding: 3px 6px;
  border-radius: 5px;
  overflow-x: auto;
}

.flash {
  padding: 12px;
  border-radius: 10px;
  margin-bottom: 12px;
}

.flash.ok {
  background: #15351f;
}

.flash.error {
  background: #451d1d;
}

small {
  color: #a7afc2;
}