/* ==========================================================================
   ASToolHub - Tool Specific Component Styles
   ========================================================================== */

/* Main Tool Container */
.tool-app {
  max-width: 960px;
  margin: 0 auto 56px;
}

.tool-app--wide {
  max-width: 1100px;
}

.tool-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 32px;
  position: relative;
}

@media (max-width: 767px) {
  .tool-box {
    padding: 20px 16px;
    border-radius: var(--radius-lg);
  }
}

/* Upload Dropzone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  background-color: var(--surface-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

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

.dropzone.dragover {
  animation: dropzonePulse 1.4s ease-in-out infinite;
}

@keyframes dropzonePulse {
  0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.35); border-color: var(--primary); }
  70% { box-shadow: 0 0 0 8px rgba(79, 70, 229, 0); border-color: var(--primary-hover); }
  100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); border-color: var(--primary); }
}

.dropzone-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-full);
  background-color: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.dropzone-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.dropzone-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.dropzone-hint {
  font-size: 0.78rem;
  color: var(--text-light);
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

/* Split Pane Layout (Input & Output) */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 840px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
}

.pane-card {
  background: var(--surface-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.pane-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* Form Controls & Form Groups */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  color: var(--text);
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
  outline: none;
}

.form-textarea {
  font-family: var(--font-mono);
  min-height: 180px;
  line-height: 1.5;
  resize: vertical;
}

/* Range Slider */
.slider-group {
  margin-bottom: 20px;
}

.slider-val-badge {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.range-slider {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--border);
  outline: none;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Buttons System */
.btn-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* Checkbox & Radio */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.checkbox-input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Format Selector Pills */
.format-selection-group {
  margin-bottom: 22px;
}

.format-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.format-pill {
  flex: 1 1 0;
  min-width: 80px;
  padding: 10px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.format-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--surface-secondary);
}

.format-pill.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.28);
}

.format-pill:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .format-pill-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .format-pill {
    min-width: auto;
    width: 100%;
    padding: 10px 8px;
    font-size: 0.88rem;
  }
}

/* Result Box */
.result-box {
  margin-top: 28px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: none;
}

.result-box.active {
  display: block;
}

.result-banner {
  background: var(--success-light);
  border: 1px solid var(--success);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text);
}

.result-banner-text {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.result-banner-text svg {
  color: var(--success);
  flex-shrink: 0;
}

.result-banner--info {
  background: var(--surface-secondary);
  border-color: var(--border);
}

.result-banner--info .result-banner-text svg {
  color: var(--primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.badge--success {
  background: var(--success-light);
  border-color: var(--success);
  color: var(--success);
}

.badge--info {
  background: var(--primary-light);
  border-color: rgba(99, 102, 241, 0.35);
  color: var(--primary);
}

.badge--warning {
  background: var(--warning-light);
  border-color: var(--warning);
  color: var(--warning);
}

/* Stats Badges */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: center;
}

.stat-val {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Image Preview */
.preview-wrap {
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  position: relative;
}

.preview-img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
}

/* File Upload Item List (PDF / Multi-image) */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  gap: 12px;
}

.file-item-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.file-item-name {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.file-item-size {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.file-item-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Alert Boxes */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.alert--info {
  background-color: var(--primary-light);
  border: 1px solid rgba(79, 70, 229, 0.3);
  color: var(--text);
}

.alert--warning {
  background-color: var(--warning-light);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--text);
}

.alert--error {
  background-color: var(--danger-light);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
}

/* Interactive Cropper Stage */
.cropper-stage {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  user-select: none;
  overflow: hidden;
  background: #000;
  border-radius: var(--radius-md);
  display: inline-block;
}

.crop-overlay {
  position: absolute;
  border: 2px dashed #fff;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.55);
  cursor: move;
}

.crop-handle {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 2px;
}

.crop-handle-nw { top: -6px; left: -6px; cursor: nwse-resize; }
.crop-handle-ne { top: -6px; right: -6px; cursor: nesw-resize; }
.crop-handle-sw { bottom: -6px; left: -6px; cursor: nesw-resize; }
.crop-handle-se { bottom: -6px; right: -6px; cursor: nwse-resize; }

/* Color Swatches */
.color-preview-large {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  text-shadow: 0 1px 3px rgba(0,0,0,0.6);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
}

.color-input-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.color-field-wrap {
  position: relative;
}

.color-copy-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 8px;
  font-size: 0.78rem;
}

/* QR Code Display Canvas */
.qr-display {
  display: flex;
  justify-content: center;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.qr-display canvas, .qr-display img {
  max-width: 256px;
  height: auto;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Tool Results Entrance & Micro-Interactions
   ========================================================================== */
@keyframes toolResultIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tool-preview-wrap,
.tool-pane--preview,
.tool-banner,
.tool-results-panel {
  animation: toolResultIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes gentleShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

.shake-error {
  animation: gentleShake 0.4s ease;
  border-color: var(--danger) !important;
}

.btn:active {
  transform: scale(0.98);
}