/* Settings modal */
.settings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.settings-overlay.show {
  display: flex;
}

.settings-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  width: min(100%, 560px);
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.2s ease;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 1;
}

.settings-header h2 {
  font-size: var(--font-lg);
  font-weight: 600;
}

.btn-close-settings {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.btn-close-settings:hover {
  background: var(--bg-hover);
}

.btn-close-settings svg {
  width: 18px;
  height: 18px;
  stroke: var(--text-secondary);
}

.settings-body {
  padding: var(--space-lg);
}

.settings-notice {
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-lg);
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-sm);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.settings-section {
  margin-bottom: var(--space-lg);
}

.settings-section-title {
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-sm);
}

.settings-divider {
  border: none;
  border-top: 1px dashed var(--border-medium);
  margin: var(--space-lg) 0;
}

/* Provider radio */
.provider-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.provider-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.provider-option:hover {
  border-color: var(--border-medium);
}

.provider-option.selected {
  border-color: var(--accent-border);
  background: var(--accent-subtle);
}

.provider-option input[type="radio"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 2px solid var(--text-muted);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  cursor: pointer;
}

.provider-option input[type="radio"]:checked {
  border-color: var(--accent);
}

.provider-option input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.provider-label {
  font-size: var(--font-sm);
  color: var(--text-primary);
}

.provider-badge {
  font-size: var(--font-xs);
  color: var(--accent);
  margin-left: var(--space-xs);
}

/* API key field */
.field-group {
  margin-bottom: var(--space-md);
}

.field-label {
  display: block;
  font-size: var(--font-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.field-input-wrapper {
  position: relative;
}

.field-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  padding-right: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 16px;
  transition: border-color var(--transition-fast);
}

.field-input:focus {
  border-color: var(--accent-border);
}

.field-input::placeholder {
  color: var(--text-muted);
}

.btn-toggle-visibility {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.btn-toggle-visibility:hover {
  background: var(--bg-hover);
}

.btn-toggle-visibility svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
}

.field-hint {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-top: var(--space-xs);
  overflow-wrap: anywhere;
}

.field-hint a {
  color: var(--accent);
}

/* Select */
.field-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 16px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.field-select:focus {
  border-color: var(--accent-border);
}

/* Settings footer */
.settings-footer {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  position: sticky;
  bottom: 0;
  background: var(--bg-secondary);
  flex-wrap: wrap;
}

.btn-reset {
  margin-right: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-reset:hover {
  background: var(--bg-hover);
  color: var(--error);
  border-color: var(--error);
}

.btn-test {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  color: var(--accent);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-test:hover {
  background: var(--accent);
  color: var(--text-inverse);
}

.btn-test.testing {
  opacity: 0.6;
  pointer-events: none;
}

.btn-test.success {
  border-color: var(--success, #4ade80);
  color: var(--success, #4ade80);
}

.btn-test.fail {
  border-color: var(--error);
  color: var(--error);
}

/* Toggle switch */
.toggle-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.toggle-input {
  display: none;
}

.toggle-switch {
  width: 40px;
  height: 22px;
  background: var(--border-medium);
  border-radius: 11px;
  position: relative;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--text-secondary);
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.toggle-input:checked + .toggle-switch {
  background: var(--accent);
}

.toggle-input:checked + .toggle-switch::after {
  transform: translateX(18px);
  background: #fff;
}

.toggle-label {
  font-size: var(--font-sm);
  color: var(--text-primary);
}

.range-control {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.range-input {
  flex: 1;
}

.range-value {
  color: var(--text-primary);
  font-weight: 600;
  min-width: 28px;
  text-align: center;
}

.range-hint {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-top: 4px;
}

.btn-save {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  background: var(--accent);
  color: var(--text-inverse);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  font-weight: 600;
  transition: background var(--transition-fast);
}

.btn-save:hover {
  background: var(--accent-hover);
}

@media (max-width: 768px) {
  .settings-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .settings-modal {
    width: 100%;
    max-width: none;
    max-height: 100dvh;
    height: min(100dvh, 100%);
    border-radius: 20px 20px 0 0;
    border-bottom: none;
  }

  .settings-header {
    padding:
      calc(var(--space-md) + var(--safe-top))
      var(--space-md)
      var(--space-md)
      var(--space-md);
  }

  .settings-body {
    padding: var(--space-md);
  }

  .provider-option,
  .toggle-row {
    align-items: flex-start;
  }

  .settings-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding:
      var(--space-sm)
      var(--space-md)
      calc(var(--space-sm) + var(--safe-bottom))
      var(--space-md);
  }

  .btn-reset {
    margin-right: 0;
    grid-column: 1 / -1;
  }

  .btn-test,
  .btn-save {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 420px) {
  .settings-footer {
    grid-template-columns: 1fr;
  }

  .btn-reset {
    grid-column: auto;
  }

  .range-control {
    gap: var(--space-xs);
  }
}