/* PureOrganism - Clean, Readable Veterinary & Pet Safety Stylesheet */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette - Light Mode */
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #0d9488;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --brand-primary: #0d5c48;
  --brand-hover: #083c2f;
  --brand-light: #e6f4ef;
  --brand-border: #a7f3d0;

  --danger-bg: #fef2f2;
  --danger-border: #fecaca;
  --danger-text: #991b1b;

  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;

  --info-bg: #f0fdfa;
  --info-border: #99f6e4;
  --info-text: #115e59;

  --content-max-width: 720px;
  --layout-max-width: 1040px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0b1312;
    --bg-surface: #111f1c;
    --bg-subtle: #172a26;
    --border-color: #213c36;
    --border-focus: #2dd4bf;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    --brand-primary: #14b8a6;
    --brand-hover: #2dd4bf;
    --brand-light: #132f2a;
    --brand-border: #1a4d44;

    --danger-bg: #2d1515;
    --danger-border: #5c2020;
    --danger-text: #fca5a5;

    --warning-bg: #2c1d0a;
    --warning-border: #59390a;
    --warning-text: #fcd34d;

    --info-bg: #0c2925;
    --info-border: #144f46;
    --info-text: #5eead4;
  }
}

/* Base Reset & Typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Site Header */
.site-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--brand-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.site-logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.3rem 0.2rem;
  transition: color 0.15s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--brand-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.nav-emergency {
  background-color: var(--danger-bg);
  color: var(--danger-text) !important;
  border: 1px solid var(--danger-border);
  padding: 0.35rem 0.75rem !important;
  border-radius: 6px;
  font-weight: 600 !important;
}

/* Layout Containers */
.site-main {
  flex: 1;
  padding: 2rem 1.25rem 4rem;
}

.content-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.layout-wide {
  max-width: var(--layout-max-width);
  margin: 0 auto;
}

/* Headings & Text Hierarchy */
h1 {
  font-size: 2.15rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  font-weight: 700;
}

h2 {
  font-size: 1.5rem;
  line-height: 1.35;
  letter-spacing: -0.015em;
  margin-top: 2.25rem;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
  font-weight: 600;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.4;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
  font-weight: 600;
}

p {
  margin-bottom: 1.2rem;
  color: var(--text-secondary);
}

a {
  color: var(--brand-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--brand-hover);
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.6rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.5rem;
}

li::marker {
  color: var(--brand-primary);
}

blockquote {
  border-left: 3px solid var(--brand-primary);
  padding-left: 1.2rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

strong {
  font-weight: 600;
  color: var(--text-primary);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

th, td {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

th {
  background-color: var(--bg-subtle);
  font-weight: 600;
}

/* Metadata Bar */
.page-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.page-meta .category-badge {
  background-color: var(--brand-light);
  color: var(--brand-primary);
  border: 1px solid var(--brand-border);
  font-weight: 500;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

/* Callout & Banner Boxes */
.emergency-banner {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: var(--danger-text);
  padding: 1.15rem 1.25rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  font-size: 1rem;
  line-height: 1.55;
}

.emergency-banner p:last-child {
  margin-bottom: 0;
}

.quick-summary-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--brand-primary);
  border-radius: 8px;
  padding: 1.25rem;
  margin: 1.75rem 0 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.summary-heading {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  font-size: 0.95rem;
}

@media (min-width: 600px) {
  .summary-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.summary-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.summary-item.full-width {
  grid-column: 1 / -1;
}

/* Search Box */
.search-wrapper {
  margin: 1.75rem 0 2.25rem;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.85rem;
  font-size: 1.1rem;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Category Grid on Home */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0 2.5rem;
}

@media (min-width: 600px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none;
  display: block;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-primary);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.category-card h3 {
  margin: 0 0 0.35rem 0;
  font-size: 1.15rem;
  color: var(--brand-primary);
}

.category-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.category-card .count-pill {
  font-size: 0.75rem;
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
  display: inline-block;
  margin-top: 0.5rem;
}

/* Filter Controls on Poisons List */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.filter-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.filter-btn.active {
  background-color: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
}

/* Poison List Items */
.poison-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.poison-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.15rem 1.25rem;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.poison-card:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.poison-card h3 {
  margin: 0 0 0.35rem 0;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.poison-card:hover h3 {
  color: var(--brand-primary);
}

.poison-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.card-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.badge-calc {
  font-size: 0.75rem;
  background-color: var(--brand-light);
  color: var(--brand-primary);
  border: 1px solid var(--brand-border);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
}

.badge-cat {
  font-size: 0.75rem;
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
}

/* Guide Cards */
.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.guide-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.35rem;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.guide-card:hover {
  border-color: var(--brand-primary);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
}

.guide-card h3 {
  margin: 0 0 0.4rem 0;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.guide-card:hover h3 {
  color: var(--brand-primary);
}

.guide-card p {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
}

/* Dose Calculator Container */
.calculator-box {
  background-color: var(--bg-surface);
  border: 2px solid var(--brand-border);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 2.25rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.calculator-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.calculator-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

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

@media (min-width: 550px) {
  .calc-form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.calc-field.full {
  grid-column: 1 / -1;
}

.calc-field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.calc-input, .calc-select {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.15s ease;
}

.calc-input:focus, .calc-select:focus {
  outline: none;
  border-color: var(--border-focus);
}

.unit-switch {
  display: inline-flex;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 0.2rem;
}

.unit-btn {
  background: var(--bg-surface);
  border: none;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-secondary);
  font-family: inherit;
}

.unit-btn.active {
  background-color: var(--brand-primary);
  color: #ffffff;
}

.calc-result-panel {
  margin-top: 1.5rem;
  padding: 1.15rem 1.25rem;
  border-radius: 8px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
}

.result-tier {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.calc-result-panel.status-below_threshold {
  background-color: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-text);
}

.calc-result-panel.status-at_or_above_threshold {
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-text);
}

.calc-result-panel.status-severe,
.calc-result-panel.status-emergency {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

.result-explanation {
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.result-disclaimer {
  font-size: 0.82rem;
  opacity: 0.85;
  border-top: 1px dashed rgba(0, 0, 0, 0.15);
  padding-top: 0.5rem;
  margin-bottom: 0;
}

/* Emergency Page Helpline Cards */
.helpline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem;
}

@media (min-width: 650px) {
  .helpline-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.helpline-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.35rem;
}

.helpline-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
}

.phone-item {
  margin-bottom: 1rem;
}

.phone-item:last-child {
  margin-bottom: 0;
}

.phone-item strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.phone-number {
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-primary);
  text-decoration: none;
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.phone-number:hover {
  text-decoration: underline;
}

.fee-note {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* FAQs Section */
.faq-list {
  margin: 1.5rem 0;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin-bottom: 0.85rem;
  background-color: var(--bg-surface);
  padding: 1rem 1.25rem;
}

.faq-q {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.faq-a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Site Footer */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 1.25rem;
  margin-top: auto;
  font-size: 0.9rem;
}

.footer-container {
  max-width: var(--layout-max-width);
  margin: 0 auto;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.footer-nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.footer-disclaimer {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

/* Responsive adjustments */
@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.35rem; }
  body { font-size: 1rem; }
  .site-header { padding: 0.75rem 1rem; }
  .header-container { flex-wrap: wrap; row-gap: 0.5rem; }
  .site-nav { flex-wrap: wrap; gap: 0.25rem 1rem; }
  .site-nav a { font-size: 0.95rem; }
  .calculator-box { padding: 1.15rem; }
}

.alert-box{background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:1rem 1.25rem;margin:0 0 1.5rem}
.alert-box p{margin:0}
@media (prefers-color-scheme: dark){.alert-box{background:#3b1414;border-color:#7f1d1d}}

@media (max-width: 700px) {
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}