/**
 * ToolFlux Lab - Components Design System
 * 
 * Buttons, Cards, Inputs, Tabs, Badges, Search Modal, Accordions.
 */

/* =========================================================
   BUTTONS
========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  min-height: 44px;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.3;
  text-align: center;
  box-sizing: border-box;
  max-width: 100%;
  word-break: break-word;
  overflow-wrap: break-word;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-xs);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-main);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--bg-surface-secondary);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  background: var(--bg-surface-secondary);
  color: var(--text-main);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--text-xs);
  min-height: 36px;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: var(--text-base);
  min-height: 48px;
}

.btn-block {
  width: 100%;
}

/* =========================================================
   BADGES & PILLS
========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 4px 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  line-height: 1.3;
  max-width: 100%;
  box-sizing: border-box;
  word-break: break-word;
  overflow-wrap: break-word;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

html.dark .badge-primary {
  border-color: rgba(56, 189, 248, 0.3);
}

.badge-neutral {
  background: var(--bg-surface-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.badge-privacy {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(22, 163, 74, 0.2);
}

.badge-featured {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(217, 119, 6, 0.2);
}

/* =========================================================
   CARDS (Precision Engineering)
========================================================= */
.card {
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  word-break: break-word;
  overflow-wrap: break-word;
}

.tool-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  box-shadow: var(--shadow-xs);
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.tool-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-secondary);
  color: var(--primary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-card-icon {
  background: var(--primary);
  color: #FFFFFF;
}

.tool-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-2);
}

.tool-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
}

.tool-card-arrow {
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-card-arrow {
  transform: translateX(3px);
}

html[dir="rtl"] .tool-card:hover .tool-card-arrow {
  transform: translateX(-3px);
}

/* Tool Grid */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Category Card */
.category-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-xs);
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.category-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.category-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-secondary);
  color: var(--primary);
  border: 1px solid var(--border-subtle);
}

.category-card-count {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-surface-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.category-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-1);
}

.category-card-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Featured Tool Showcase (Distinct Highlight) */
.featured-showcase {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .featured-showcase {
    padding: var(--space-10);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--space-8);
  }
}

.featured-accent-glow {
  position: absolute;
  top: -50px;
  inset-inline-end: -50px;
  width: 250px;
  height: 250px;
  background: var(--primary-glow);
  border-radius: 50%;
  filter: blur(50px);
  pointer-events: none;
}

.featured-content {
  position: relative;
  z-index: 1;
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.featured-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

@media (min-width: 768px) {
  .featured-title {
    font-size: var(--text-3xl);
  }
}

.featured-desc {
  font-size: var(--text-base);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
  max-width: 580px;
}

/* =========================================================
   FORM CONTROLS & INPUTS (High Contrast WCAG AA/AAA)
========================================================= */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.input-affix-wrap,
.input-affix-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.form-input,
.form-control,
.form-select,
.doc-select,
select,
.form-textarea {
  width: 100%;
  background-color: var(--input-background);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  padding: 0.625rem 0.875rem;
  color: var(--input-text);
  font-size: var(--text-base);
  font-variant-numeric: tabular-nums;
  color-scheme: inherit;
  transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-control::placeholder,
.form-textarea::placeholder {
  color: var(--input-placeholder);
  opacity: 1;
}

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

.form-input:disabled,
.form-control:disabled,
.form-select:disabled,
.doc-select:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--surface-hover);
}

select option,
.form-select option,
.doc-select option {
  background-color: var(--surface);
  color: var(--text-primary);
}

.input-suffix,
.input-prefix,
.input-unit {
  position: absolute;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--input-affix);
  pointer-events: none;
  padding-inline: var(--space-3);
  z-index: 2;
  user-select: none;
}

.input-suffix,
.input-unit {
  inset-inline-end: 0;
}

.input-prefix {
  inset-inline-start: 0;
}

.has-suffix,
.input-affix-wrap:has(.input-unit) input,
.input-affix-wrap:has(.input-suffix) input {
  padding-inline-end: 2.5rem;
}

.has-prefix,
.input-affix-wrap:has(.input-prefix) input {
  padding-inline-start: 2.5rem;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: 2px;
}

/* =========================================================
   SEGMENTED TABS
========================================================= */
.segmented-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  background: var(--surface-secondary);
  padding: 4px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: var(--space-6);
}

.tab-btn {
  flex: 1;
  min-width: 100px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--border);
  box-shadow: var(--shadow-xs);
}

/* =========================================================
   BREADCRUMB
========================================================= */
.breadcrumb-nav {
  margin-bottom: var(--space-4);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.breadcrumb-item a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--primary);
}

.breadcrumb-sep {
  color: var(--border-color);
}

.breadcrumb-current {
  color: var(--text-main);
  font-weight: 600;
}

/* =========================================================
   FAQ ACCORDION (Semantic Details / Summary)
========================================================= */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--primary);
}

.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
}

/* =========================================================
   SEARCH MODAL (Command Palette)
========================================================= */
.search-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8, 11, 18, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-4);
  padding-top: 10vh;
  box-sizing: border-box;
}

.search-modal-backdrop.open {
  display: flex;
}

.search-modal-window {
  width: 100%;
  max-width: min(600px, calc(100vw - 32px));
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  box-sizing: border-box;
  margin: 0 auto;
}

.search-input-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-color);
}

.search-input-header input {
  flex-grow: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--text-lg);
  color: var(--text-main);
}

.search-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: var(--space-2);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.search-result-item:hover,
.search-result-item.selected {
  background: var(--bg-surface-secondary);
  color: var(--primary);
}

.search-result-info {
  flex-grow: 1;
}

.search-result-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 2px;
}

.search-result-cat {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.search-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface-secondary);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.search-empty-state {
  padding: var(--space-8);
  text-align: center;
}