/* ============================================================
   tools.css - Tool Page Common Styles
   Styles for individual tool pages including input/output areas,
   action buttons, result display, and tool descriptions.
   ============================================================ */


/* ----------------------------------------------------------
   1. Tool Page Header
   ---------------------------------------------------------- */
.tool-header {
  margin-bottom: var(--space-8);
}

.tool-header__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.tool-header__icon svg {
  width: 28px;
  height: 28px;
}

.tool-header__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-tight);
}

.tool-header__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 640px;
}

.tool-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.tool-header__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-header__meta-item svg {
  width: 16px;
  height: 16px;
}


/* ----------------------------------------------------------
   2. Tool Workspace (Input/Output Container)
   ---------------------------------------------------------- */
.tool-workspace {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Split layout: side-by-side input & output */
.tool-workspace--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Panel: generic container for input or output */
.tool-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.tool-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

.tool-panel__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-panel__title svg {
  width: 16px;
  height: 16px;
  color: var(--color-text-tertiary);
}

.tool-panel__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-panel__body {
  padding: var(--space-5);
}


/* ----------------------------------------------------------
   3. Input Area
   ---------------------------------------------------------- */
.tool-input {
  width: 100%;
}

.tool-input__field {
  width: 100%;
  min-height: 200px;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  resize: vertical;
  transition: all var(--transition-fast);
  outline: none;
}

.tool-input__field::placeholder {
  color: var(--color-text-tertiary);
  font-family: var(--font-family);
}

.tool-input__field:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* File Upload Input */
.tool-input__upload {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-10) var(--space-6);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-bg-secondary);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tool-input__upload:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.tool-input__upload-icon {
  width: 48px;
  height: 48px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.tool-input__upload-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.tool-input__upload-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* Options Row */
.tool-input__options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

.tool-input__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.tool-input__option label {
  cursor: pointer;
}

/* Character / Word Counter */
.tool-input__counter {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}


/* ----------------------------------------------------------
   4. Output / Result Area
   ---------------------------------------------------------- */
.tool-output {
  width: 100%;
}

.tool-output__content {
  width: 100%;
  min-height: 200px;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Placeholder state */
.tool-output__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: var(--space-8);
  color: var(--color-text-tertiary);
  text-align: center;
}

.tool-output__placeholder svg {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-3);
  opacity: 0.5;
}

.tool-output__placeholder-text {
  font-size: var(--font-size-sm);
}

/* Success state */
.tool-output__success {
  border-color: var(--color-success);
  background-color: var(--color-success-light);
}

/* Error state */
.tool-output__error {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
  color: var(--color-error);
}

/* Download-ready state */
.tool-output__download {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-10);
  text-align: center;
}

.tool-output__download-icon {
  width: 56px;
  height: 56px;
  color: var(--color-success);
}

.tool-output__download-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.tool-output__download-size {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}


/* ----------------------------------------------------------
   5. Action Button Groups
   ---------------------------------------------------------- */
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-5);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

/* Primary action (e.g., "Convert", "Generate") */
.tool-actions__primary {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.tool-actions__primary .btn {
  min-width: 140px;
}

/* Secondary actions (e.g., "Copy", "Download", "Clear") */
.tool-actions__secondary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Centered actions between input/output */
.tool-actions--center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: transparent;
  border: none;
}


/* ----------------------------------------------------------
   6. Copy / Download / Clear Buttons
   ---------------------------------------------------------- */
.tool-action-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
}

.tool-action-btn:hover {
  background-color: var(--color-border);
  color: var(--color-text);
}

.tool-action-btn svg {
  width: 14px;
  height: 14px;
}

.tool-action-btn--success {
  color: var(--color-success);
  background-color: var(--color-success-light);
}

.tool-action-btn--success:hover {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.tool-action-btn--danger {
  color: var(--color-error);
}

.tool-action-btn--danger:hover {
  background-color: var(--color-error-light);
  color: var(--color-error);
}


/* ----------------------------------------------------------
   7. Tool Description / Info Section
   ---------------------------------------------------------- */
.tool-info {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.tool-info__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.tool-info__content {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.tool-info__content p {
  margin-bottom: var(--space-4);
}

.tool-info__content h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.tool-info__content ul,
.tool-info__content ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.tool-info__content li {
  margin-bottom: var(--space-2);
  list-style: disc;
}

.tool-info__content ol li {
  list-style: decimal;
}

.tool-info__content code {
  padding: 2px 6px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  color: var(--color-primary);
}

.tool-info__content pre {
  padding: var(--space-4);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

.tool-info__content pre code {
  padding: 0;
  background: none;
  border-radius: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* How-to Steps */
.tool-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.tool-step {
  display: flex;
  gap: var(--space-4);
}

.tool-step__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.tool-step__content {
  flex: 1;
  padding-top: var(--space-1);
}

.tool-step__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.tool-step__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}


/* ----------------------------------------------------------
   8. Tool Options / Settings Panel
   ---------------------------------------------------------- */
.tool-settings {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-5);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.tool-settings__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tool-settings__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tool-settings__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.tool-settings__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* Toggle Switch */
.tool-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
}

.tool-toggle__label {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.tool-toggle__switch {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.tool-toggle__switch--active {
  background-color: var(--color-primary);
}

.tool-toggle__switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-xs);
}

.tool-toggle__switch--active::after {
  transform: translateX(20px);
}

/* Range Slider */
.tool-range {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tool-range__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tool-range__value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.tool-range input[type="range"] {
  width: 100%;
  height: 6px;
  appearance: none;
  background-color: var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}

.tool-range input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.tool-range input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.tool-range input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-sm);
}


/* ----------------------------------------------------------
   9. Tabs (for tools with multiple modes)
   ---------------------------------------------------------- */
.tool-tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  overflow-x: auto;
}

.tool-tabs__item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  border: none;
  background: none;
}

.tool-tabs__item:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.tool-tabs__item--active {
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.tool-tabs__item svg {
  width: 16px;
  height: 16px;
}


/* ----------------------------------------------------------
   10. Progress Indicator
   ---------------------------------------------------------- */
.tool-progress {
  width: 100%;
  height: 6px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.tool-progress__bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.tool-progress--indeterminate .tool-progress__bar {
  width: 30%;
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}

@keyframes progress-indeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}


/* ----------------------------------------------------------
   11. Drag & Drop Zone
   ---------------------------------------------------------- */
.tool-dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  padding: var(--space-10);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-bg-secondary);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tool-dropzone:hover,
.tool-dropzone--active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.tool-dropzone__icon {
  width: 48px;
  height: 48px;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

.tool-dropzone__text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.tool-dropzone__hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}


/* ----------------------------------------------------------
   12. Responsive - Tool Pages
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .tool-workspace--split {
    grid-template-columns: 1fr;
  }

  .tool-actions--center {
    flex-direction: row;
    padding: var(--space-4) 0;
  }
}

@media (max-width: 640px) {
  .tool-header__title {
    font-size: var(--font-size-2xl);
  }

  .tool-header__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .tool-panel__header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .tool-panel__body {
    padding: var(--space-4);
  }

  .tool-input__field,
  .tool-output__content {
    min-height: 150px;
    font-size: var(--font-size-xs);
  }

  .tool-actions {
    flex-direction: column;
  }

  .tool-actions__primary .btn {
    width: 100%;
  }

  .tool-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tool-tabs__item {
    flex: none;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
  }

  .tool-step {
    gap: var(--space-3);
  }

  .tool-settings {
    padding: var(--space-4);
  }
}