/* Settings structure shared by the Local and Cloud Homework adapters. */
.hw-settings {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 0;
  min-height: min(70vh, 640px);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.hw-settings-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 10px;
  border-right: 1px solid var(--border);
  background: var(--surface-soft);
}

.hw-settings-tab {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.hw-settings-tab:hover {
  background: var(--track);
  color: var(--text);
}

.hw-settings-tab.is-active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 0 0 1px var(--border);
}

.hw-settings-tab:focus-visible {
  outline: 3px solid var(--primary-soft);
  outline-offset: 1px;
}

.hw-settings-main {
  min-width: 0;
  padding: 20px 24px 28px;
}

.hw-settings-section h2 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 700;
}

.hw-settings-lead {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 13px;
}

.hw-settings-section .hw-setting-row { max-width: 520px; }
.hw-settings-section .rfid-power--card { max-width: 420px; }

.hw-settings-main .grid.grid-2 > .hw-settings-section {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

@media (max-width: 800px) {
  .hw-settings {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .hw-settings-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
    padding: 10px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .hw-settings-tab { width: auto; }
  .hw-settings-main { padding: 16px; }
}