/* =============================================================================
   AMYNO Pages CSS — About, Lab Results, FAQ, Legal
   ============================================================================= */

/* =============================================================================
   Shared page layout
   ============================================================================= */

.page-hero {
  padding: clamp(5rem, 10vw, 8rem) 0 clamp(2.5rem, 5vw, 4rem);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1rem + 3vw, 3.2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--space-4);
}

.page-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: 1.6;
  margin: 0;
}

.page-content-wrap {
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(4rem, 8vw, 7rem);
}

/* =============================================================================
   About page
   ============================================================================= */

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  margin-bottom: clamp(3rem, 7vw, 6rem);
}

@media (max-width: 1023px) {
  .about-intro-grid { grid-template-columns: 1fr; }
}

.about-section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 1rem + 1.5vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-5);
}

.about-text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}

.about-text p:last-child { margin-bottom: 0; }

.about-highlight {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-5) var(--space-6);
  background: rgba(28, 58, 40, 0.05);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  line-height: 1.65;
}

.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.about-stat-card {
  padding: var(--space-6) var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
}

.about-stat-value {
  font-size: clamp(1.6rem, 1rem + 2vw, 2.4rem);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.about-stat-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.about-values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: clamp(2rem, 5vw, 4rem);
}

@media (max-width: 639px) {
  .about-values-grid { grid-template-columns: 1fr; }
}

.about-value-card {
  padding: var(--space-8) var(--space-8);
  background: var(--color-surface-2);
  border-radius: var(--radius-xl);
  border-left: 3px solid var(--color-primary);
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
}

.about-value-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(28,58,40,0.09), 0 2px 8px rgba(0,0,0,0.04);
}

.about-value-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-top: 2px;
}

.about-value-body { flex: 1; min-width: 0; }

.about-value-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.about-value-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin: 0;
}

/* =============================================================================
   Lab Results page
   ============================================================================= */

.lab-intro {
  max-width: 740px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.lab-intro p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.lab-parameters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

@media (max-width: 1023px) {
  .lab-parameters-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 599px) {
  .lab-parameters-grid { grid-template-columns: 1fr; }
}

.lab-param-card {
  padding: var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.lab-param-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.lab-param-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}

.lab-param-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.lab-coa-banner {
  background: var(--color-primary);
  border-radius: var(--radius-2xl);
  padding: clamp(2rem, 5vw, 3.5rem) clamp(2rem, 5vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.lab-coa-banner-text h3 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1rem + 1.5vw, 1.8rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-2);
}

.lab-coa-banner-text p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.72);
  margin: 0;
}

.lab-coa-banner .btn {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
  flex-shrink: 0;
}

.lab-coa-banner .btn:hover {
  background: var(--color-surface-3);
  border-color: var(--color-surface-3);
}

/* =============================================================================
   FAQ page
   ============================================================================= */

.faq-intro {
  max-width: 600px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.faq-intro p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-categories {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.faq-cat-btn {
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid var(--color-border-hover);
  background: transparent;
  color: var(--color-text-muted);
  transition: all var(--duration-fast) ease;
}

.faq-cat-btn.is-active,
.faq-cat-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.faq-section-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.faq-section-title:first-of-type {
  padding-top: 0;
  border-top: none;
}

.faq-list {
  margin-bottom: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-2);
  transition: border-color var(--duration-fast) ease;
}

.faq-item.is-open {
  border-color: rgba(28, 58, 40, 0.25);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.faq-question:hover { color: var(--color-primary); }

.faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--duration-normal) var(--ease-out-expo),
              background var(--duration-fast) ease;
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-normal) var(--ease-out-expo);
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer-inner p {
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin: 0;
}

@media (max-width: 479px) {
  .faq-question { padding: var(--space-4) var(--space-4); gap: var(--space-3); }
  .faq-answer-inner p { padding: 0 var(--space-4) var(--space-4); }
  .faq-categories { gap: var(--space-2); }
  .faq-cat-btn { padding: 0.4rem 0.85rem; }
}

/* =============================================================================
   Legal pages
   ============================================================================= */

.legal-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 96px;
}

@media (max-width: 899px) {
  .legal-layout { grid-template-columns: 1fr; }
  .legal-toc {
    position: static;
    top: auto;
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
  }
}

.legal-toc-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.legal-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.legal-toc-list a {
  display: block;
  padding: 0.35rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease;
}

.legal-toc-list a:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
}

.legal-body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1rem + 1vw, 1.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin: clamp(2rem, 4vw, 3rem) 0 var(--space-4);
  padding-top: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--color-border);
  scroll-margin-top: 100px;
}

.legal-body h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.legal-body p,
.legal-body li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}

.legal-body ul,
.legal-body ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}

.legal-body li { margin-bottom: var(--space-2); }

.legal-body strong { color: var(--color-text); font-weight: 600; }

.legal-meta {
  display: inline-flex;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: clamp(2rem, 4vw, 3rem);
  flex-wrap: wrap;
}

@media (max-width: 479px) {
  .legal-meta {
    display: flex;
    gap: var(--space-2);
    flex-direction: column;
    width: 100%;
  }
}

.legal-meta span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.legal-meta strong {
  font-weight: 700;
  color: var(--color-text);
}

/* =============================================================================
   COA Vault — modern table of batch-specific certificates
   ============================================================================= */

.coa-vault {
  margin-top: clamp(3rem, 6vw, 5rem);
}

.coa-vault-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto clamp(1.5rem, 3vw, 2.5rem);
}

.coa-vault-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

.coa-vault-header p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* Table wrapper — rounded card container */
.coa-table-wrap {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
}

.coa-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: auto;
}

.coa-table thead {
  background: var(--color-surface, #f8f7f3);
}

.coa-table th {
  text-align: left;
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.coa-table th.coa-col-action {
  text-align: right;
  width: 1%;
}

.coa-table td {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text);
  vertical-align: middle;
  border-bottom: 1px solid var(--color-border);
}

.coa-table tbody tr:last-child td {
  border-bottom: none;
}

.coa-table tbody tr {
  transition: background 140ms ease;
}

.coa-table tbody tr:hover {
  background: var(--color-surface, #f8f7f3);
}

/* Product cell: thumb + name */
.coa-cell-product {
  min-width: 220px;
}

.coa-product-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  transition: color 140ms ease;
}

.coa-product-link:hover .coa-product-name {
  color: var(--color-primary);
}

.coa-cell-product .coa-product-name,
.coa-cell-product > .coa-thumb + .coa-product-name {
  vertical-align: middle;
}

.coa-thumb {
  display: inline-block;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  object-fit: cover;
  border: 1px solid var(--color-border);
  vertical-align: middle;
  margin-right: var(--space-3);
}

.coa-product-link .coa-thumb {
  margin-right: 0;
}

.coa-thumb-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.coa-product-name {
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

/* Batch — monospace pill */
.coa-batch {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-surface, #f8f7f3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.coa-cell-date {
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.coa-dash {
  color: var(--color-text-muted);
}

/* Download button */
.coa-cell-action {
  text-align: right;
  white-space: nowrap;
  width: 1%;
}

.coa-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0;
  border-radius: var(--radius-full, 999px);
  text-decoration: none;
  transition: background 160ms ease, transform 160ms ease;
  white-space: nowrap;
}

.coa-download:hover {
  background: var(--color-primary-dark, #065f46);
  transform: translateY(-1px);
  color: #fff;
}

.coa-download svg {
  flex: 0 0 auto;
}

.coa-download-label {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.coa-download-size {
  opacity: 0.75;
  font-weight: 500;
  font-size: 0.8125em;
}

/* Responsive — stack into mobile cards below 720px */
@media (max-width: 720px) {
  .coa-table,
  .coa-table thead,
  .coa-table tbody,
  .coa-table tr,
  .coa-table td,
  .coa-table th {
    display: block;
    width: auto;
    box-sizing: border-box;
  }

  .coa-table thead {
    display: none;
  }

  .coa-table tbody tr {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
  }

  .coa-table tbody tr:last-child {
    border-bottom: none;
  }

  .coa-table td {
    padding: var(--space-1) 0;
    border: none;
    white-space: normal;
    min-width: 0;
    max-width: 100%;
  }

  .coa-cell-product {
    min-width: 0;
    margin-bottom: var(--space-2);
  }

  .coa-cell-product .coa-product-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
  }

  .coa-cell-product .coa-product-name {
    font-size: var(--text-sm);
    min-width: 0;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .coa-cell-batch,
  .coa-cell-date {
    display: flex !important;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
  }

  .coa-cell-batch::before,
  .coa-cell-date::before {
    content: attr(data-label);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
  }

  .coa-cell-action {
    text-align: left;
    margin-top: var(--space-3);
    width: 100%;
  }

  .coa-download {
    display: flex;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    justify-content: center;
  }

  .coa-download-size {
    display: none;
  }
}

/* Pagination */
.coa-vault-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.coa-page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all 160ms ease;
}

.coa-page-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.coa-page-link.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* =============================================================================
   Peptide Reconstitution Calculator
   ============================================================================= */

.pc-calc {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 8px 32px -12px rgba(17, 24, 39, 0.08);
  margin-bottom: clamp(3rem, 5vw, 4rem);
}

.pc-calc-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 0;
}

@media (max-width: 860px) {
  .pc-calc-inner { grid-template-columns: 1fr; }
}

/* --- Left inputs panel --- */
.pc-inputs {
  padding: clamp(1.25rem, 2.4vw, 2rem);
  border-right: 1px solid var(--color-border);
  background: #fff;
}

@media (max-width: 860px) {
  .pc-inputs { border-right: none; border-bottom: 1px solid var(--color-border); }
}

.pc-section-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-3);
}

/* Presets */
.pc-presets {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface, #f8f7f3);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.pc-presets-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.pc-preset-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pc-preset {
  appearance: none;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full, 999px);
  cursor: pointer;
  transition: all 160ms ease;
  letter-spacing: -0.01em;
}

.pc-preset:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pc-preset.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* Input fields */
.pc-field {
  margin-bottom: var(--space-4);
}

.pc-field:last-of-type {
  margin-bottom: var(--space-3);
}

.pc-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.pc-hint {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0;
}

/* Stepper input */
.pc-stepper {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto 44px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 160ms ease;
}

.pc-stepper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 92, 59, 0.12);
}

.pc-step {
  appearance: none;
  background: transparent;
  border: none;
  height: 48px;
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 140ms ease;
  line-height: 1;
}

.pc-step:hover {
  background: var(--color-surface, #f8f7f3);
  color: var(--color-primary);
}

.pc-input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 0 var(--space-3);
  text-align: right;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  min-width: 0;
}

.pc-input::-webkit-outer-spin-button,
.pc-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.pc-input[type=number] { -moz-appearance: textfield; }

.pc-unit {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  padding-right: var(--space-3);
  padding-left: var(--space-2);
}

/* Warning */
.pc-warn {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: #fef3c7;
  border: 1px solid #fbbf24;
  color: #78350f;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.pc-warn[hidden] {
  display: none;
}

.pc-warn svg {
  flex: 0 0 auto;
  margin-top: 1px;
}

/* --- Right output panel (dark green) --- */
.pc-output {
  padding: clamp(1.25rem, 2.4vw, 2rem);
  background: linear-gradient(165deg, #0e5c3b 0%, #0a4a2f 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Heading above syringes */
.pc-syringe-heading {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: center;
  margin-bottom: var(--space-2);
}

.pc-syringe-heading-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.pc-syringe-heading-desc {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.4;
}

@media (max-width: 540px) {
  .pc-syringe-heading-desc { font-size: 0.78rem; }
}

/* 3-syringe row */
.pc-syringe-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3) var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
}

.pc-syr {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 10px 4px 6px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color 220ms ease, border-color 220ms ease;
}

.pc-syr.is-best {
  background: rgba(52, 211, 153, 0.08);
  border-color: rgba(52, 211, 153, 0.45);
  box-shadow: 0 0 0 1px rgba(52, 211, 153, 0.25) inset;
}

.pc-syr-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  text-align: center;
  min-height: 2.4rem;
}

.pc-syr-label {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.pc-syr-sublabel {
  font-size: 0.7rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pc-syr-svg {
  width: 100%;
  max-width: 108px;
  height: auto;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.28));
  will-change: transform;
}

/* Both fluid and plunger translate by the IDENTICAL calc(...) expression,
   so the visible fluid top stays glued to the piston bottom during and
   after every animation frame — no easing or transform-origin quirk can
   pull them apart. */
.pc-syr-fluid,
.pc-syr-plunger {
  transform: translateY(180px);
  transition: transform 520ms cubic-bezier(0.2, 0, 0.2, 1);
  will-change: transform;
}

.pc-syr.is-filled .pc-syr-fluid,
.pc-syr.is-filled .pc-syr-plunger {
  transform: translateY(calc((1 - var(--fill-ratio, 0)) * 180px));
}

.pc-syr.is-overflow .pc-syr-fluid rect {
  fill: #ef4444;
  transition: fill 220ms ease;
}

.pc-syr.is-overflow .pc-syr-val {
  color: #fca5a5;
}

.pc-syr-foot {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

.pc-syr-val {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.pc-syr-unit {
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.04em;
}

.pc-syr-badge {
  display: inline-block;
  margin-top: 2px;
  padding: 3px 8px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0a4a2f;
  background: #6ee7b7;
  border-radius: 999px;
}

.pc-syr-badge[hidden] {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .pc-syr-fluid, .pc-syr-plunger, .pc-syr {
    transition: none;
  }
}

@media (max-width: 540px) {
  .pc-syringe-row {
    gap: 8px;
    padding: var(--space-3) 8px;
  }
  .pc-syr { gap: 8px; padding: 8px 2px 4px; }
  .pc-syr-sublabel { font-size: 0.6rem; letter-spacing: 0.04em; }
  .pc-syr-head { min-height: 2rem; }
  .pc-syr-label { font-size: 0.85rem; }
  .pc-syr-svg { max-width: 88px; }
  .pc-syr-val { font-size: 1.05rem; }
  .pc-syr-badge { font-size: 0.55rem; padding: 2px 6px; }
}

/* Results grid */
.pc-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.pc-result {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}

.pc-result--highlight {
  background: #fff;
  color: #0a4a2f;
  border-color: #fff;
}

.pc-result--highlight .pc-result-label { color: rgba(10, 74, 47, 0.7); }
.pc-result--highlight .pc-result-value { color: #0a4a2f; }
.pc-result--highlight .pc-result-unit  { color: rgba(10, 74, 47, 0.6); }

.pc-result-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.pc-result-value {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.pc-result-unit {
  font-size: var(--text-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0;
  text-transform: none;
}

/* --- How-to guide --- */
.pc-guide {
  margin-top: clamp(2rem, 4vw, 3rem);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.pc-guide .section-title {
  font-size: clamp(1.5rem, 2.5vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  color: var(--color-text);
}

.pc-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 960px) {
  .pc-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 559px) {
  .pc-steps { grid-template-columns: 1fr; }
}

.pc-step-card {
  padding: var(--space-5);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.pc-step-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px -8px rgba(17, 24, 39, 0.1);
}

.pc-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.pc-step-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin: 0;
}

.pc-step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* Research disclaimer */
.pc-disclaimer {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: #fef3c7;
  border: 1px solid #fbbf24;
  border-radius: var(--radius-lg);
  color: #78350f;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.pc-disclaimer svg {
  flex: 0 0 auto;
  margin-top: 2px;
}

.pc-disclaimer strong {
  display: block;
  font-weight: 700;
  margin-bottom: 4px;
  color: #78350f;
}

.pc-disclaimer p {
  font-size: var(--text-sm);
  line-height: 1.6;
  margin: 0;
  color: #92400e;
}

/* Screen reader only */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}