/* Unit Converter — aligned with shared/css/theme.css (madestool dark) */

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--gap-lg);
}

.uc-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(1.25rem, 3vw, 2rem);
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(30, 41, 59, 0.65) 0%, rgba(15, 23, 42, 0.35) 100%),
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(59, 130, 246, 0.18), transparent 55%);
}

.uc-hero .container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--gap-lg);
  text-align: center;
}

.uc-hero h1 {
  margin: 0.5rem 0 0.35rem;
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: var(--font-weight-semibold);
  color: var(--blue-300);
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.logo-icon {
  font-size: 1.1rem;
}

.header-sub {
  margin: 0 auto;
  max-width: 36rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

/* Search */
.search-wrap {
  position: relative;
  max-width: 32rem;
  margin: 1.25rem auto 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--navy-800);
  border: 1px solid var(--navy-600);
  border-radius: var(--radius-lg);
  padding: 0.35rem 0.75rem 0.35rem 0.85rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-wrap:focus-within {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-icon {
  flex-shrink: 0;
  opacity: 0.7;
  font-size: 1rem;
}

.search-wrap .search-input {
  flex: 1;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  padding: 0.5rem 0.25rem !important;
  font-size: 0.9375rem !important;
}

.search-clear {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: var(--radius-md);
  background: var(--navy-700);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  transition: background var(--transition-base), color var(--transition-base);
}

.search-clear:hover {
  background: var(--navy-600);
  color: var(--text-primary);
}

.search-results {
  max-width: 32rem;
  margin: 0.5rem auto 0;
  text-align: left;
  font-size: 0.8125rem;
  color: var(--text-muted);
  min-height: 0;
}

.search-results:empty {
  display: none;
}

.search-results.has-items {
  background: var(--navy-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0;
  max-height: 12rem;
  overflow-y: auto;
}

.search-hit {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
}

.search-hit:last-child {
  border-bottom: none;
}

.search-hit:hover,
.search-hit:focus {
  background: rgba(59, 130, 246, 0.08);
  color: var(--text-primary);
}

/* Main layout */
.uc-main {
  padding: var(--gap-xl) 0 var(--gap-3xl);
}

.uc-main > .container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--gap-xl);
}

/* Ad placeholders — match theme, not floating white */
.ad-slot {
  border-radius: var(--radius-md);
  border: 1px dashed rgba(148, 163, 184, 0.25);
  background: rgba(30, 41, 59, 0.5);
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ad-slot span {
  opacity: 0.65;
}

/* Category tabs */
.category-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--gap-sm);
}

@media (max-width: 640px) {
  .category-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
}

.cat-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.75rem 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--navy-600);
  background: var(--navy-800);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: border-color var(--transition-base), background var(--transition-base), color var(--transition-base), transform 0.15s ease;
}

.cat-tab:hover {
  border-color: rgba(96, 165, 250, 0.35);
  color: var(--text-primary);
  background: var(--navy-700);
}

.cat-tab.active {
  border-color: var(--blue-500);
  background: rgba(59, 130, 246, 0.12);
  color: var(--blue-300);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.2);
}

.cat-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.cat-label {
  line-height: 1.2;
}

/* Converter panel */
.converter-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.cat-panel {
  display: none;
  padding: var(--gap-lg);
}

.cat-panel.active {
  display: block;
  animation: fade-in 0.25s ease-out;
}

.panel-header {
  margin-bottom: var(--gap-lg);
  padding-bottom: var(--gap-md);
  border-bottom: 1px solid var(--border-light);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.panel-icon {
  font-size: 1.25rem;
}

.panel-subtitle {
  margin-top: 0.35rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.converter-grid {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.uc-grid-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 9rem);
  gap: var(--gap-md);
  align-items: center;
  padding: 0.65rem var(--gap-md);
  background: var(--navy-800);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base);
}

.uc-grid-row:hover {
  border-color: rgba(96, 165, 250, 0.2);
}

.uc-grid-row.uc-dimmed {
  opacity: 0.35;
  pointer-events: none;
}

.uc-unit-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

.uc-unit-input {
  font-family: var(--font-mono) !important;
  font-size: 0.9375rem !important;
  text-align: right;
  padding: 0.5rem 0.65rem !important;
}

/* Cards below */
.card-title {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.card .icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.icon-orange {
  background: rgba(245, 158, 11, 0.15);
}

.icon-purple {
  background: rgba(168, 85, 247, 0.15);
}

.icon-blue {
  background: rgba(59, 130, 246, 0.15);
}

.quick-ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--gap-md);
}

.quick-ref-item {
  padding: var(--gap-md);
  background: var(--navy-800);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.quick-ref-item strong {
  color: var(--blue-300);
  font-weight: var(--font-weight-semibold);
}

/* Thai land */
.thai-units-card .thai-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--gap-md);
}

.thai-info-item {
  padding: var(--gap-md);
  background: var(--navy-800);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.thai-info-label {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--blue-300);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.thai-info-value {
  margin-top: 0.25rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.thai-info-sub {
  margin-top: 0.2rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.thai-calc-title {
  margin-top: var(--gap-xl);
  margin-bottom: var(--gap-md);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.thai-calc-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-md);
}

@media (max-width: 480px) {
  .thai-calc-row {
    grid-template-columns: 1fr;
  }
}

.thai-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.thai-label {
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
}

.thai-input {
  width: 100%;
}

.thai-calc-results {
  margin-top: var(--gap-lg);
  padding: var(--gap-md);
  background: var(--navy-800);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.thai-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.875rem;
}

.thai-result-row:last-child {
  border-bottom: none;
}

.thai-result-label {
  color: var(--text-muted);
}

.thai-result-val {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap-sm);
}

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--navy-800);
  overflow: hidden;
}

.faq-q {
  padding: var(--gap-md) var(--gap-lg);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap-md);
}

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

.faq-q::after {
  content: "▾";
  font-size: 0.65rem;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

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

.faq-a {
  margin: 0;
  padding: 0 var(--gap-lg) var(--gap-md);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.faq-a strong {
  color: var(--blue-300);
}

/* Footer */
footer {
  margin-top: auto;
  padding: var(--gap-2xl) 0;
  border-top: 1px solid var(--border);
  background: rgba(6, 13, 26, 0.5);
}

footer .container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--gap-lg);
  text-align: center;
}

footer p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-links {
  margin-top: var(--gap-lg);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--gap-sm) var(--gap-md);
}

.footer-links a {
  font-size: 0.8125rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--navy-600);
  color: var(--text-muted);
}

.footer-links a:hover {
  border-color: var(--blue-500);
  color: var(--blue-300);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  opacity: 0;
  background: var(--navy-700);
  color: var(--text-primary);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--navy-600);
  font-size: 0.875rem;
  z-index: 300;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}