:root {
  color-scheme: light;
  font-family: system-ui, sans-serif;
  color: #172033;
  background: #f2f5f9;
}

body {
  margin: 0;
  padding: 24px;
}

.container {
  max-width: 920px;
  margin: 0 auto;
}

.card {
  margin: 20px auto;
  padding: 24px;
  border: 1px solid #d8e0eb;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 16px #1720330b;
}

.narrow {
  max-width: 440px;
  margin-top: 10vh;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

h1, h2, p {
  margin-top: 0;
}

h1 {
  margin-bottom: 4px;
}

label {
  display: block;
  margin: 18px 0 6px;
  font-weight: 650;
}

input:not([type="hidden"]) {
  box-sizing: border-box;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #b8c4d4;
  border-radius: 7px;
  font: inherit;
}

input[type="file"] {
  padding: 8px;
}

select {
  box-sizing: border-box;
  width: 100%;
  padding: 9px 10px;
  border: 1px solid #b8c4d4;
  border-radius: 7px;
  background: #fff;
  font: inherit;
}

button {
  margin-top: 14px;
  padding: 10px 16px;
  border: 0;
  border-radius: 7px;
  color: #fff;
  background: #176b49;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

button.secondary {
  color: #172033;
  background: #e4eaf1;
}

button.danger {
  margin: 0;
  background: #a12828;
}

.hint {
  margin: 8px 0 0;
  color: #526174;
  font-size: 0.92rem;
}

.notice {
  padding: 12px 14px;
  border-radius: 7px;
}

.notice.success {
  color: #124a32;
  background: #dff5e8;
}

.notice.error {
  color: #7b1d1d;
  background: #fde8e8;
}

.pairing-code-card {
  border-color: #8cc9a7;
  background: #f1fbf5;
}

.pairing-code {
  display: inline-block;
  padding: 12px 16px;
  border: 1px dashed #176b49;
  border-radius: 8px;
  color: #124a32;
  background: #fff;
  font-size: 1.6rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.badge.online {
  color: #124a32;
  background: #dff5e8;
}

.badge.offline {
  color: #526174;
  background: #e4eaf1;
}

.table-wrap {
  overflow-x: auto;
}

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

th, td {
  padding: 12px 10px;
  border-bottom: 1px solid #e4eaf1;
  text-align: left;
  vertical-align: top;
}

.device-table {
  min-width: 980px;
}

.device-table form {
  min-width: 140px;
}

.device-table button {
  white-space: nowrap;
}

@media (max-width: 580px) {
  body {
    padding: 12px;
  }

  .card {
    padding: 18px;
  }

  .header {
    align-items: flex-start;
    flex-direction: column;
  }
}