/* ==========================================================================
   NissiTools - UI Components & Interactive Elements
   ========================================================================== */

/* Form Elements */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.form-hint {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
  padding-right: 2.25rem;
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.input-group {
  display: flex;
  position: relative;
}

.input-group .form-control {
  border-radius: var(--radius) 0 0 var(--radius);
}

.input-group-addon {
  display: flex;
  align-items: center;
  padding: 0 1rem;
  background-color: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-left: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Range Slider */
.slider-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.range-slider {
  flex: 1;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--bg-muted);
  outline: none;
  accent-color: var(--primary);
  cursor: pointer;
}

.slider-value {
  font-weight: 700;
  color: var(--primary);
  min-width: 45px;
  text-align: right;
  font-family: var(--font-mono);
}

/* Pill Tabs & Segmented Controls */
.tabs-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius) var(--radius) 0 0;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--primary);
  background-color: var(--bg-muted);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: var(--primary-light);
}

.tab-pane {
  display: none;
  animation: fadeIn 0.2s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Drag and Drop Zone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  text-align: center;
  background-color: var(--bg-card);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
}

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

.dropzone-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background-color: var(--bg-muted);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.dropzone-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.dropzone-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.dropzone-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Tool Workspace Container */
.tool-workspace {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}

.tool-workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.tool-actions-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background-color: var(--bg-muted);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Result / Output Boxes */
.result-box {
  background-color: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 1.5rem;
  position: relative;
}

.result-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.result-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  font-family: var(--font-mono);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.775rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 0.25rem;
}

/* Accordion */
.accordion {
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.accordion-item {
  border-bottom: 1px solid var(--border-color);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem;
  background-color: var(--bg-card);
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: background-color var(--transition-fast);
}

.accordion-trigger:hover {
  background-color: var(--bg-muted);
}

.accordion-trigger::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: transform var(--transition);
}

.accordion-item.active .accordion-trigger::after {
  content: '−';
  color: var(--primary);
}

.accordion-body {
  display: none;
  padding: 1.25rem;
  background-color: var(--bg-primary);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.accordion-item.active .accordion-body {
  display: block;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th, .data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background-color: var(--bg-muted);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.data-table tr:hover td {
  background-color: var(--primary-light);
}

/* Alerts and Callouts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  line-height: 1.5;
}

.alert-info {
  background-color: var(--info-light);
  border: 1px solid var(--primary-border);
  color: var(--text-primary);
}

.alert-warning {
  background-color: var(--warning-light);
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-success {
  background-color: var(--success-light);
  border: 1px solid #a7f3d0;
  color: #065f46;
}

/* Checkbox & Radio Buttons */
.custom-checkbox, .custom-radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.custom-checkbox input, .custom-radio input {
  accent-color: var(--primary);
  width: 1.1rem;
  height: 1.1rem;
}

/* Content Article for SEO / Tool Guides */
.tool-guide {
  margin-top: 3.5rem;
  border-top: 1px solid var(--border-color);
  padding-top: 2.5rem;
}

.tool-guide h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.tool-guide h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem;
}

.tool-guide p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.tool-guide ul, .tool-guide ol {
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.tool-guide li {
  margin-bottom: 0.4rem;
}