.main-content {
  display: grid;
  grid-template-columns: repeat(2, minmax(320px, 1fr));
  gap: 24px;
  width: 100%;
  padding: 24px 24px 32px;
  align-items: start;
}

.settings-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.settings-section h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.setting-item label {
  color: var(--muted);
  font-size: 0.9rem;
}

.setting-item.is-disabled {
  opacity: 0.6;
}

.setting-item.is-disabled select,
.setting-item.is-disabled button,
.setting-item.is-disabled .toggle-track {
  cursor: not-allowed;
}

.setting-item select:disabled,
.setting-item button:disabled {
  background: var(--panel-2);
  border-color: var(--border);
}

.toggle input:disabled + .toggle-track {
  background: var(--panel-2);
  border-color: var(--border);
}

.status-hint {
  margin-left: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 500;
}

.setting-item select {
  min-width: 220px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.9rem;
}

.setting-item select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.toggle {
  min-width: 220px;
  display: inline-flex;
  justify-content: flex-start;
  align-items: center;
  position: relative;
  height: 36px;
}

.toggle input {
  position: absolute;
  width: 44px;
  height: 24px;
  opacity: 0;
  margin: 0;
  cursor: pointer;
}

.toggle-track {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  position: relative;
  transition: background var(--transition), border-color var(--transition);
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text);
  transform: translateY(-50%);
  transition: transform var(--transition);
}

.toggle input:checked + .toggle-track {
  border-color: rgba(79, 209, 197, 0.5);
  background: rgba(79, 209, 197, 0.2);
}

.toggle input:checked + .toggle-track::after {
  transform: translate(20px, -50%);
}

.toggle input:focus-visible + .toggle-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.setting-item button {
  min-width: 220px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition),
    background var(--transition);
}

.setting-item button:hover {
  border-color: rgba(79, 209, 197, 0.65);
  background: rgba(79, 209, 197, 0.24);
  transform: translateY(-1px);
}

.setting-item button:active {
  transform: translateY(0);
}

.setting-item button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.setting-item .settings-link {
  min-width: 220px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform var(--transition), border-color var(--transition),
    background var(--transition);
}

.setting-item .settings-link:hover {
  border-color: rgba(79, 209, 197, 0.65);
  background: rgba(79, 209, 197, 0.24);
  transform: translateY(-1px);
}

.setting-item .settings-link:active {
  transform: translateY(0);
}

.setting-item .settings-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* responsive */
@media (min-width: 1400px) {
  .main-content {
    grid-template-columns: repeat(3, minmax(320px, 1fr));
  }
}

@media (max-width: 700px) {
  .main-content {
    grid-template-columns: 1fr;
    padding: 16px 16px 24px;
    gap: 16px;
  }

  .settings-section {
    padding: 16px;
  }

  .setting-item {
    align-items: flex-start;
  }

  .setting-item select {
    width: 100%;
    min-width: 0;
  }

  .toggle {
    width: 100%;
    min-width: 0;
    justify-content: flex-start;
  }

  .setting-item button {
    width: 100%;
    min-width: 0;
  }

  .setting-item .settings-link {
    width: 100%;
    min-width: 0;
  }
}