/* ============================================================
   PREMIUM TOOLS — Modern toolbox experience
   ============================================================ */

/* ---- Tools tokens ------------------------------------------ */
:root {
  --tl-bg: #f8fafc;
  --tl-card-bg: #ffffff;
  --tl-card-border: rgba(99,102,241,.08);
  --tl-card-shadow: 0 1px 3px rgba(0,0,0,.04), 0 6px 16px rgba(0,0,0,.03);
  --tl-card-shadow-hover: 0 4px 12px rgba(0,0,0,.06), 0 16px 40px rgba(99,102,241,.1);
  --tl-text: #1e293b;
  --tl-text-muted: #64748b;
  --tl-text-light: #94a3b8;
  --tl-primary: #6366f1;
  --tl-primary-light: #818cf8;
  --tl-radius: 16px;
  --tl-radius-sm: 12px;
  --tl-radius-xs: 8px;
  --tl-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  --tl-transition: cubic-bezier(.22,.61,.36,1);
}

html.dark {
  --tl-bg: #0f172a;
  --tl-card-bg: #1e293b;
  --tl-card-border: rgba(129,140,248,.1);
  --tl-card-shadow: 0 1px 3px rgba(0,0,0,.2), 0 6px 16px rgba(0,0,0,.15);
  --tl-card-shadow-hover: 0 4px 12px rgba(0,0,0,.3), 0 16px 40px rgba(99,102,241,.15);
  --tl-text: #f1f5f9;
  --tl-text-muted: #94a3b8;
  --tl-text-light: #64748b;
}

/* ============================================================
   PAGE BACKGROUND
   ============================================================ */
.tools-page-bg {
  background: var(--tl-bg);
  min-height: 100vh;
  position: relative;
}
.tools-page-bg::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 480px;
  background: linear-gradient(180deg, rgba(99,102,241,.04) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}
html.dark .tools-page-bg::before {
  background: linear-gradient(180deg, rgba(99,102,241,.08) 0%, transparent 100%);
}
.tools-page-bg > * {
  position: relative;
  z-index: 1;
}

/* ============================================================
   HERO HEADER
   ============================================================ */
.tools-hero {
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius);
  box-shadow: var(--tl-card-shadow);
  overflow: hidden;
  margin-bottom: 32px;
  position: relative;
}
.tools-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--tl-gradient);
}
.tools-hero-inner {
  padding: 40px 32px 36px;
}
.tools-hero-eyebrow {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--tl-primary);
  margin-bottom: 6px;
}
.tools-hero-title {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -.5px;
  color: var(--tl-text);
  margin: 0 0 6px;
  line-height: 1.2;
}
.tools-hero-desc {
  font-size: .95rem;
  color: var(--tl-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ============================================================
   SEARCH BAR
   ============================================================ */
.tools-search-wrap {
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius);
  box-shadow: var(--tl-card-shadow);
  overflow: hidden;
  margin-bottom: 20px;
}
.tools-search-inner {
  padding: 16px 20px;
}
.tools-search-input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  background: rgba(99,102,241,.04);
  border: 1.5px solid var(--tl-card-border);
  border-radius: var(--tl-radius-sm);
  font-size: .95rem;
  font-weight: 500;
  color: var(--tl-text);
  transition: all .2s ease;
  outline: none;
}
.tools-search-input::placeholder {
  color: var(--tl-text-light);
}
.tools-search-input:focus {
  border-color: var(--tl-primary);
  background: transparent;
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
html.dark .tools-search-input {
  background: rgba(129,140,248,.06);
  border-color: rgba(129,140,248,.12);
  color: var(--tl-text);
}
html.dark .tools-search-input:focus {
  border-color: var(--tl-primary-light);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

/* ============================================================
   FILTER TABS
   ============================================================ */
.tools-filter-wrap {
  margin-bottom: 24px;
}
.tools-filter-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius);
  box-shadow: var(--tl-card-shadow);
  overflow-x: auto;
  scrollbar-width: none;
}
.tools-filter-bar::-webkit-scrollbar { display: none; }

.tools-filter-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--tl-radius-xs);
  font-size: .88rem;
  font-weight: 600;
  color: var(--tl-text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: all .2s ease;
  cursor: pointer;
  border: 1.5px solid transparent;
}
.tools-filter-item:hover {
  background: rgba(99,102,241,.06);
  color: var(--tl-primary);
}
.tools-filter-item.is-active {
  background: rgba(99,102,241,.1);
  color: var(--tl-primary);
  border-color: rgba(99,102,241,.2);
}
.tools-filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 99px;
  font-size: .68rem;
  font-weight: 700;
  background: rgba(99,102,241,.1);
  color: var(--tl-primary);
}
.tools-filter-divider {
  width: 1px;
  height: 24px;
  background: var(--tl-card-border);
  flex-shrink: 0;
  margin: 0 4px;
}

/* ============================================================
   CATEGORY LABELS
   ============================================================ */
.tools-category-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: var(--tl-text-muted);
  margin-bottom: 4px;
  padding: 6px 0;
}
.tools-category-label::before {
  content: '';
  width: 4px;
  height: 16px;
  border-radius: 99px;
  background: var(--tl-gradient);
  flex-shrink: 0;
}

/* ============================================================
   TOOL CARDS
   ============================================================ */
.tool-card {
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius-sm);
  box-shadow: var(--tl-card-shadow);
  overflow: hidden;
  transition: all .25s var(--tl-transition);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}
.tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--tl-gradient);
  opacity: 0;
  transition: opacity .25s ease;
}
.tool-card:hover {
  box-shadow: var(--tl-card-shadow-hover);
  transform: translateY(-3px);
  text-decoration: none;
}
.tool-card:hover::after {
  opacity: 1;
}

.tool-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--tl-radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 16px;
  transition: transform .2s var(--tl-transition);
}
.tool-card:hover .tool-card-icon {
  transform: scale(1.08);
}
.tool-card-icon svg {
  width: 22px;
  height: 22px;
}

.tool-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.tool-card-name {
  font-size: .95rem;
  font-weight: 700;
  color: var(--tl-text);
  margin-bottom: 6px;
  letter-spacing: -.1px;
  text-decoration: none;
}
.tool-card:hover .tool-card-name {
  color: var(--tl-primary);
  text-decoration: none;
}
.tool-card-desc {
  font-size: .82rem;
  color: var(--tl-text-muted);
  line-height: 1.5;
  margin: 0;
}

/* Category color variants */
.tool-icon-research {
  background: rgba(16,185,129,.1);
  color: #10b981;
}
.tool-icon-development {
  background: rgba(99,102,241,.1);
  color: #6366f1;
}
.tool-icon-content {
  background: rgba(245,158,11,.1);
  color: #f59e0b;
}

/* ============================================================
   CATEGORY HEADER (inline)
   ============================================================ */
.tools-section-label {
  padding: 8px 0;
  margin-top: 8px;
  margin-bottom: 4px;
}
.tools-section-label .badge {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 99px;
}

/* ============================================================
   MICRO-INTERACTIONS & TRANSITIONS
   ============================================================ */

/* Clear button fade animation */
#clear-button-container {
  opacity: 0;
  transform: translateY(-50%) scale(0.9);
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
#clear-button-container:not(.d-none) {
  opacity: 1;
  transform: translateY(-50%) scale(1);
  pointer-events: auto;
}

/* Tool card filter transitions */
[data-tool] {
  transition: opacity .25s ease, transform .25s ease;
}
[data-tool].tl-filtering-out {
  opacity: 0;
  transform: scale(0.95);
}
[data-tool].tl-filtering-in {
  opacity: 0;
  transform: scale(0.95);
}
[data-tool].tl-filtered-in {
  opacity: 1;
  transform: scale(1);
}

/* Category label transitions */
[data-category-label] {
  transition: opacity .2s ease, max-height .3s ease;
}
[data-category-label].tl-cat-hide {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

/* Tool form button loading state */
.tool-form-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all .2s ease;
}
.tool-form-btn.is-loading {
  pointer-events: none;
  opacity: .85;
}
.tool-form-btn .tool-btn-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: tlSpin .6s linear infinite;
}
.tool-form-btn.is-loading .tool-btn-spinner {
  display: inline-block;
}
.tool-form-btn.is-loading .tool-btn-label {
  opacity: .7;
}

@keyframes tlSpin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   TOOL DETAIL HEADER
   ============================================================ */
.tools-detail-header {
  background: var(--tl-card-bg);
  border: 1px solid var(--tl-card-border);
  border-radius: var(--tl-radius);
  box-shadow: var(--tl-card-shadow);
  overflow: hidden;
  margin-bottom: 24px;
  position: relative;
  padding: 20px 24px;
}
.tools-detail-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--tl-gradient);
}
.tools-detail-header nav {
  border-bottom: 1px solid var(--tl-card-border);
  margin-bottom: 16px;
  padding-bottom: 12px;
}
.tools-detail-header .breadcrumb {
  padding: 0;
  margin: 0;
  font-size: .82rem;
}
.tools-detail-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--tl-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 20px;
}
.tools-detail-icon svg {
  width: 26px;
  height: 26px;
}
.tools-detail-category {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  background: rgba(99,102,241,.08);
  color: var(--tl-primary);
}
.tools-detail-header h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.3px;
  color: var(--tl-text);
  line-height: 1.2;
}
.tools-detail-desc {
  font-size: .92rem;
  color: var(--tl-text-muted);
  line-height: 1.6;
  max-width: 640px;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes tlFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tl-animate {
  animation: tlFadeUp .5s var(--tl-transition) both;
}
.tl-animate-d1 { animation-delay: .06s; }
.tl-animate-d2 { animation-delay: .12s; }
.tl-animate-d3 { animation-delay: .18s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
  .tools-hero-title {
    font-size: 1.4rem;
  }
  .tools-hero-inner {
    padding: 20px 20px 18px;
  }
}
@media (max-width: 575.98px) {
  .tools-hero-title {
    font-size: 1.2rem;
  }
  .tools-hero-inner {
    padding: 16px;
  }
  .tools-filter-bar {
    padding: 6px 8px;
    gap: 2px;
  }
  .tools-filter-item {
    padding: 8px 12px;
    font-size: .82rem;
  }
  .tool-card-body {
    padding: 16px;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .tl-animate { animation: none; }
  .tool-card { transition: none; }
  .tool-card-icon { transition: none; }
}