/* ==========================================================================
   CONE CALCULATOR SUITE - PAGE STYLES
   Designed for all 16 individual calculator pages and the /cone-calculators/ hub.
   Fully responsive, high-contrast, accessible, and glassmorphic.
   ========================================================================== */

/* Breadcrumbs Navigation */
.breadcrumbs-nav {
  padding: 1.5rem 0 0.5rem 0;
  position: relative;
  z-index: 2;
}

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.breadcrumbs-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumbs-link:hover {
  color: var(--primary-light);
}

.breadcrumbs-separator {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.breadcrumbs-current {
  color: var(--text-main);
  font-weight: 500;
}

/* Calculator Page Header */
.calc-page-header {
  padding: 2rem 0 2.5rem 0;
  text-align: left;
  max-width: 900px;
}

.calc-page-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--secondary);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.calc-page-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.calc-page-intro {
  font-size: 1.12rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 2-Column Calculator App Grid */
.calc-app-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  margin-bottom: 3.5rem;
  align-items: start;
}

@media (max-width: 992px) {
  .calc-app-container {
    grid-template-columns: 1fr;
  }
}

/* Calculator Inputs Card */
.calc-box {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.calc-box-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.calc-box-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.8rem;
  display: block;
}

.calc-input-group {
  margin-bottom: 1.3rem;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.45rem;
}

.calc-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
}

.calc-symbol {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: var(--secondary);
  font-weight: 600;
}

.calc-input-addon {
  display: flex;
  position: relative;
}

.calc-input-field {
  flex: 1;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-right: none;
  border-top-left-radius: var(--radius-sm);
  border-bottom-left-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  outline: none;
  transition: var(--transition);
}

.calc-input-field:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.calc-unit-dropdown {
  width: 95px;
  background: #000000;
  color: #ffffff;
  color-scheme: dark;
  border: 1px solid var(--input-border);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  border-top-right-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  padding: 0.75rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
}

.calc-unit-dropdown option {
  background-color: #000000;
  color: #ffffff;
}

/* Radio & Toggle Selectors */
.calc-radio-group {
  display: flex;
  gap: 0.6rem;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  margin-bottom: 1.5rem;
}

.calc-radio-btn {
  flex: 1;
  text-align: center;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  transition: var(--transition);
}

.calc-radio-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 10px var(--primary-glow);
}

/* Validation Message */
.calc-error-box {
  display: none;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: #fecdd3;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.calc-error-box.show {
  display: block;
}

/* Action Buttons */
.calc-actions {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

/* Results & Diagram Panel */
.calc-results-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

/* Diagram Container */
.calc-diagram-box {
  background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, rgba(15, 23, 42, 0.8) 80%);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.calc-diagram-svg {
  width: 100%;
  max-width: 320px;
  height: 180px;
  display: block;
}

.diagram-caption {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.8rem;
  text-align: center;
  font-family: var(--font-mono);
}

/* Primary Result Display */
.primary-result-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.8rem;
  position: relative;
}

.result-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--secondary);
  margin-bottom: 0.4rem;
}

.result-value-row {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.result-number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
}

.result-unit {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--secondary);
  font-weight: 600;
}

/* Secondary Metrics Grid */
.secondary-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.metric-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
}

.metric-name {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Unit Conversions Table */
.conversions-card {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.conversions-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.8rem;
}

.conversions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.6rem;
}

.conversion-pill {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
}

.conversion-pill-label {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.conversion-pill-val {
  font-family: var(--font-mono);
  color: var(--text-main);
  font-weight: 600;
  margin-top: 0.2rem;
}

/* Step by Step Derivation Box */
.calc-steps-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  margin-bottom: 3.5rem;
}

.steps-title-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.4rem;
}

.steps-badge {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald-light);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  counter-reset: step-counter;
}

.step-item {
  position: relative;
  padding-left: 2.8rem;
  line-height: 1.6;
  font-size: 0.98rem;
  color: var(--text-muted);
}

.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid var(--primary-light);
  color: var(--primary-light);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Content Article Layout (SEO & Education) */
.article-section {
  padding: 2rem 0;
  border-top: 1px solid var(--card-border);
  margin-bottom: 3rem;
}

.article-content {
  max-width: 860px;
  margin: 0 auto;
}

.article-h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 700;
  color: var(--text-main);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.article-h2:first-of-type {
  margin-top: 0;
}

.article-h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 1.8rem;
  margin-bottom: 0.75rem;
}

.article-p {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.article-ul, .article-ol {
  margin: 1rem 0 1.5rem 1.8rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.article-li {
  margin-bottom: 0.5rem;
}

.formula-highlight-card {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-md);
  padding: 1.4rem 2rem;
  margin: 1.8rem 0;
  text-align: center;
}

.formula-highlight-title {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.variables-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8rem 0;
  font-size: 0.95rem;
}

.variables-table th, .variables-table td {
  padding: 0.85rem 1.2rem;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
}

.variables-table th {
  background: rgba(30, 41, 59, 0.6);
  color: var(--text-main);
  font-weight: 600;
}

.variables-table td {
  color: var(--text-muted);
}

/* Related Calculators Grid */
.related-calcs-section {
  padding: 3rem 0;
  border-top: 1px solid var(--card-border);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-card:hover {
  border-color: var(--primary-light);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.2);
}

.related-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--secondary);
  margin-bottom: 0.5rem;
}

.related-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.related-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.2rem;
}

.related-link-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Landing Page Specific Styles */
.hub-categories-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.hub-nav-pill {
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.hub-nav-pill:hover, .hub-nav-pill.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary-light);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.hub-category-block {
  margin-bottom: 4rem;
}

.hub-category-header {
  margin-bottom: 1.8rem;
}

.hub-category-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.hub-category-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

.hub-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.6rem;
}

.hub-calc-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.hub-calc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.hub-calc-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-light);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary-glow);
}

.hub-calc-card:hover::before {
  opacity: 1;
}

.hub-calc-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  margin-bottom: 1.1rem;
}

.hub-calc-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.hub-calc-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.4rem;
  flex-grow: 1;
}

.hub-calc-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.9rem;
}

.hub-calc-formula-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--secondary);
}

.hub-calc-arrow {
  color: var(--primary-light);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ==========================================================================
   Full Site Footer Styles
   ========================================================================== */
.site-footer {
  background: rgba(10, 15, 26, 0.95);
  border-top: 1px solid var(--card-border);
  padding: 4.5rem 0 2.5rem 0;
  position: relative;
  z-index: 10;
  width: 100%;
}

.footer-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-top,
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
  align-items: start;
}

.footer-col,
.footer-brand-col,
.footer-links-col,
.footer-formula-col,
.footer-pages-col {
  display: flex;
  flex-direction: column;
}

.footer-math-pill {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-sm, 6px);
  padding: 0.65rem 1rem;
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main, #ffffff);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.footer-math-note {
  font-size: 0.82rem;
  color: var(--text-muted, #94a3b8);
  line-height: 1.5;
}

.brand-logo.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.8rem;
}

.footer-heading,
.footer-col-title {
  font-size: 0.98rem;
  font-family: var(--font-heading, var(--font-sans));
  font-weight: 700;
  color: var(--text-main, #ffffff);
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links li {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: var(--text-muted, #94a3b8);
  text-decoration: none;
  font-size: 0.88rem;
  transition: all 0.2s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary-light, #38bdf8);
  transform: translateX(3px);
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm, 6px);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-light, #818cf8);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin-top: 1rem;
  width: fit-content;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--card-border);
  font-size: 0.85rem;
  color: var(--text-dim, #64748b);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  color: var(--text-dim, #64748b);
  font-size: 0.85rem;
}

.footer-meta-links a {
  color: var(--primary-light, #38bdf8);
  text-decoration: none;
  font-weight: 500;
}

@media (max-width: 1024px) {
  .footer-top,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .footer-top,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Footer Language Grid Styles */
.footer-lang-col {
  display: flex;
  flex-direction: column;
}

.footer-lang-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.4rem;
  max-width: 270px;
  width: 100%;
}

.lang-btn {
  height: 32px;
  min-width: 36px;
  padding: 0 4px;
  font-size: 0.78rem;
  font-weight: 700;
  font-family: var(--font-sans);
  border-radius: 6px;
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #94a3b8;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  box-sizing: border-box;
}

.lang-btn:hover {
  background: rgba(51, 65, 85, 0.95);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.lang-btn.active {
  background: #2563eb;
  color: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 0 14px rgba(37, 99, 235, 0.5);
}

.goog-te-banner-frame.skiptranslate,
.goog-te-gadget-simple,
#goog-gt-tt,
.goog-te-balloon-frame {
  display: none !important;
}
body {
  top: 0 !important;
}
.skiptranslate {
  display: none !important;
}
#google_translate_element {
  display: none !important;
}

/* ==========================================================================
   More / Other Calculators Section Styles
   ========================================================================== */
.more-calculators-section {
  position: relative;
  padding: 5rem 0 4.5rem 0;
  border-top: 1px solid var(--card-border);
  z-index: 1;
}

.more-calcs-filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.75rem;
}

.more-filter-btn {
  padding: 0.55rem 1.25rem;
  border-radius: 9999px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.more-filter-btn:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(30, 41, 59, 0.85);
}

.more-filter-btn.active {
  background: #2563eb;
  color: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 0 18px rgba(37, 99, 235, 0.45);
}

.more-calcs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

@media (max-width: 1100px) {
  .more-calcs-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .more-calcs-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .more-calcs-grid {
    grid-template-columns: 1fr;
  }
}

.home-calc-card {
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 1.85rem 1.25rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 185px;
  gap: 0.85rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.home-calc-card:hover,
.home-calc-card:focus-visible {
  border-color: #3b82f6;
  border-width: 1px;
  box-shadow: 0 0 25px rgba(59, 130, 246, 0.4), inset 0 0 15px rgba(59, 130, 246, 0.1);
  transform: translateY(-4px);
}

.home-calc-icon-wrap {
  width: 68px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

.home-calc-icon-wrap svg {
  width: 100%;
  height: 100%;
  display: block;
  transition: transform 0.25s ease;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.35));
}

.home-calc-card:hover .home-calc-icon-wrap svg {
  transform: scale(1.1);
}

.home-calc-title {
  font-size: 1.02rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 0;
  line-height: 1.35;
  transition: color 0.2s ease;
}

.home-calc-card:hover .home-calc-title {
  color: #ffffff;
}

.calc-card-formula-tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--secondary, #38bdf8);
  background: rgba(56, 189, 248, 0.08);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  border: 1px solid rgba(56, 189, 248, 0.2);
  margin-top: 0.2rem;
}

.more-calcs-cta-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
}

.calculate-quick-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  height: 36px;
  padding: 0 1rem;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
  border-radius: var(--radius-sm, 6px);
  line-height: 1;
}

.calculate-quick-btn span {
  white-space: nowrap;
  display: inline-block;
}

.btn-arrow,
.calculate-quick-btn .btn-arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  transition: transform 0.2s ease;
}

.calculate-quick-btn:hover .btn-arrow {
  transform: translateX(3px);
}