/* ===================================================================
   TRENDS FOR SALE (TFS) - UNIT & DATA CONVERTERS STYLES
   =================================================================== */

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.convertor-main {
  flex: 1 0 auto;
}

/* -------------------------------------------------------------------
   Converter Hero & Category Tabs
   ------------------------------------------------------------------- */
.conv-hero {
  padding: 60px 24px 30px;
  background: var(--gradient-glow);
  text-align: center;
}

.conv-hero-container {
  max-width: 980px;
  margin: 0 auto;
}

.badge-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.conv-title {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.conv-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Domain Category Filter Pills */
.conv-category-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.cat-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cat-pill:hover {
  background: var(--border-subtle);
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.cat-pill.active {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.conv-tab.hidden {
  display: none !important;
}

/* Tabs Bar */
.conv-tabs-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--bg-surface);
  padding: 8px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
  max-width: 900px;
  margin: 0 auto;
}

.conv-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.conv-tab:hover {
  color: var(--text-primary);
  background: var(--border-subtle);
}

.conv-tab.active {
  background: var(--accent-cyan);
  color: #060a12;
  font-weight: 700;
  box-shadow: 0 0 14px var(--accent-cyan-glow);
}

/* -------------------------------------------------------------------
   Panes & Card Layout
   ------------------------------------------------------------------- */
.conv-content-section {
  padding: 30px 24px 80px;
}

.section-container {
  max-width: 1080px;
  margin: 0 auto;
}

.conv-pane {
  display: none;
  animation: fadeIn 0.25s ease forwards;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.conv-card {
  padding: 36px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 20px;
}

.head-left h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.head-left p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.conv-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-primary);
  font-size: 1.05rem;
  outline: none;
  transition: all var(--transition-fast);
}

.conv-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.conv-select {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.conv-select:focus {
  border-color: var(--accent-cyan);
}

/* -------------------------------------------------------------------
   Tab 1: Radix Grid
   ------------------------------------------------------------------- */
.radix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.input-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.block-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.block-top label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: var(--border-subtle);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.meta-calc-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 600;
}

.meta-val {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

/* -------------------------------------------------------------------
   Tab 2: IEEE-754 Visualizer
   ------------------------------------------------------------------- */
.ieee-inputs-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.ieee-breakdown-box {
  display: grid;
  grid-template-columns: 140px 240px 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.bit-segment {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.seg-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sign-seg .seg-title { color: #f43f5e; }
.exp-seg .seg-title { color: #a855f7; }
.mantissa-seg .seg-title { color: #00e5ff; }

.seg-bits {
  font-size: 1.15rem;
  font-weight: 700;
  word-break: break-all;
  line-height: 1.2;
}

.sign-seg .seg-bits { color: #f43f5e; }
.exp-seg .seg-bits { color: #c084fc; }
.mantissa-seg .seg-bits { color: #38bdf8; }

.seg-label {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.ieee-formula-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.formula-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}

.ieee-formula-card code {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-cyan);
}

/* -------------------------------------------------------------------
   Tabs 3-7: Standard Unit Grid
   ------------------------------------------------------------------- */
.standard-converter-grid {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: 28px;
}

.conv-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.conv-field label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.result-highlight {
  background: var(--bg-primary);
  color: var(--accent-cyan);
  font-weight: 700;
}

.swap-btn-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
}

.swap-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.swap-btn:hover {
  background: var(--accent-cyan);
  color: #060a12;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan-glow);
  transform: rotate(180deg);
}

.equals-icon {
  font-size: 1.6rem;
  color: var(--text-muted);
}

/* Presets Chips */
.quick-presets-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.presets-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
}

.presets-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-preset, .chip-preset-freq {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chip-preset:hover, .chip-preset-freq:hover {
  background: rgba(0, 229, 255, 0.15);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Toast */
.copy-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--accent-emerald);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 9999;
}

.copy-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* -------------------------------------------------------------------
   Automotive Fuel Economy & Consumption Studio
   ------------------------------------------------------------------- */
.title-with-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.fuel-presets-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.preset-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preset-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-btn:hover {
  background: var(--border-subtle);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.matrix-heading-wrap {
  margin-bottom: 16px;
}

.section-subhead {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.matrix-subtext {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.fuel-matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.fuel-input-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.fuel-input-card:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.fuel-input-card.highlight-card {
  background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(6, 182, 212, 0.04) 100%);
  border-color: rgba(6, 182, 212, 0.3);
}

.fuel-unit-code {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-cyan);
  display: block;
}

.fuel-unit-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  display: block;
  text-transform: none;
}

.fuel-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.fuel-input-wrap input {
  width: 100%;
  padding-right: 64px;
  font-size: 1.15rem;
  font-weight: 600;
  background: var(--bg-surface);
}

.fuel-unit-tag {
  position: absolute;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  pointer-events: none;
}

.fuel-desc-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Mathematical Formula Callout */
.fuel-formula-callout {
  margin-top: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-left: 4px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.formula-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.formula-content {
  flex: 1;
}

.formula-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
  margin-bottom: 10px;
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.formula-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.formula-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.formula-item code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

/* Responsive */
@media (max-width: 860px) {
  .radix-grid, .ieee-inputs-row {
    grid-template-columns: 1fr;
  }
  .ieee-breakdown-box {
    grid-template-columns: 1fr;
  }
  .standard-converter-grid {
    grid-template-columns: 1fr;
  }
  .swap-btn-wrap {
    margin: 0;
  }
}

/* -------------------------------------------------------------------
   Site Footer (Converters)
   ------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 24px 30px;
  margin-top: auto;
  width: 100%;
}

.footer-container {
  max-width: 1360px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .site-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
  display: inline-block;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.5;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0;
  margin: 0;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-badges {
  display: flex;
  gap: 8px;
}

@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}