:root {
  --font-body:       'Poppins', sans-serif;
  --color-text:      #1d1d1f;
  --color-bg:        #ffffff;
  --color-accent:    #36454f;
  --color-secondary: #f0ad22;
  --color-border:    #e1e1e1;
  --space-sm:        8px;
  --space-md:       16px;
  --space-lg:       24px;
  --radius:          12px;
  --shadow:          rgba(0,0,0,0.1);
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

.container {
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.site-header, .site-footer {
  text-align: center;
  background: var(--color-bg);
  box-shadow: 0 2px 4px var(--shadow);
}

.site-footer .container {
  position: relative;
  padding: var(--space-md) 0;
  max-width: calc(400px + var(--space-lg) + 750px);
  margin: 0 auto;
}

.site-footer .footer-icon {
  position: absolute;
  bottom: var(--space-sm);
  left: var(--space-md);
  width: 1.25em;
  height: auto;
}

.site-header {
  margin: 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: calc(400px + var(--space-lg) + 750px);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.header-nav {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  width: 100%;
  flex-direction: column;
  gap: var(--space-md);
  background: var(--color-bg);
  padding: var(--space-md);
  box-shadow: 0 2px 4px var(--shadow);
  z-index: 1000;
  text-align: center;
}

.header-nav a {
  display: block;
  text-decoration: none;
  color: var(--color-accent);
  font-weight: 600;
  padding: var(--space-sm) 0;
}

.logo img {
  display: block;
  margin: 6pt auto 0;
}

.header-title {
  margin-left: var(--space-md);
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 600;
}

@media (max-width: 767px) {
  .header-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 600px) {
  .header-inner {
    flex-direction: column;
    align-items: center;
  }
  .header-title {
    margin-left: 0;
    text-align: center;
  }
}


.menu-toggle {
  display: block;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-accent);
  cursor: pointer;
}

/* On wider screens, keep the dropdown only as wide as its content */
@media (min-width: 601px) {
  .header-nav {
    left: auto;
    width: auto;
    text-align: right;
  }
}

.header-nav.open {
  display: flex;
}

.footer-link {
  color: var(--color-secondary);
  text-decoration: none;
  font-weight: 600;
  margin-right: var(--space-md);
}
.footer-link:hover {
  text-decoration: underline;
}

/* --- Client Info --- */
.client-info-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: var(--space-lg) auto;
  padding: var(--space-lg);
  box-shadow: 0 4px 12px var(--shadow);
  border-radius: var(--radius);
  max-width: calc(400px + var(--space-lg) + 750px);
}

.client-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
}

/* Consistent spacing between form groups */
.calculator-form .form-group:not(:last-child),
.calculator-form fieldset:not(:last-child) {
  margin-bottom: var(--space-md);
}

.client-name-group {
  flex: 0 0 300px;
}

.client-name-group label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

/* Keep checkbox labels together with their inputs */
.checkbox-group label {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.care-checkbox { margin: 0; }
.toggle-label { font-weight: 400; }

.care-input-group {
  flex: 0 0 300px;
  display: none;
  flex-direction: column;
}

.care-input-group.visible {
  display: flex;
}

.project-group { flex: 0 0 150px; }
.full-width   { flex: 1 1 100%; }

/* --- Calculator Layout --- */
.calculator-layout {
  display: flex;
  gap: var(--space-lg);
  margin: var(--space-lg) auto;
  max-width: calc(400px + var(--space-lg) + 750px);
}

.form-card { flex: 0 0 400px; }

.results-container {
  flex: 0 0 750px;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* --- Cards --- */
.card {
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px var(--shadow);
  padding: var(--space-lg);
}

/* Allow horizontal scrolling on small screens */
.summary-card,
.result-card {
  overflow-x: auto;
}

.card-title {
  margin: 0 0 var(--space-md);
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 600;
  text-align: center;
}

.page-title {
  margin: var(--space-md) 0;
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 600;
  text-align: center;
}

/* --- Form Controls --- */
label, legend {
  margin-bottom: var(--space-sm);
}

legend {
  font-weight: 600;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

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

/* --- Button containers --- */
.calculate-container,
.export-container {
  text-align: center;
  margin: var(--space-md) 0;
}

/* Ensure export buttons align horizontally */
.export-container {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
}

.export-container .btn {
  width: auto;
  margin-bottom: 0;
}

/* --- Buttons --- */
.btn {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  transition: background 0.2s;
  margin: 0 var(--space-sm) var(--space-sm) 0;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #2e3b4a;
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
}
.btn-secondary:hover {
  background: #d6951c;
}

/* --- Tables --- */
.results-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: auto;
  font-size: 0.8rem; /* slightly smaller for better fit */
}

.results-table th,
.results-table td {
  border: 0.5px solid var(--color-border);
  padding: var(--space-sm);
  text-align: center;
  word-break: break-word;
}

.results-table thead th {
  background: var(--color-accent);
  color: #fff;
  font-size: 0.8rem;
}

.results-table tfoot td {
  font-weight: 600;
  background: #f9f9f9;
}

/* --- Chemistry Tests: vertical stack, no gaps --- */
#chemTestCheckboxes {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* --- Physical Evaluation Tests: vertical stack, no gaps --- */
#physTestCheckboxes {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Material select layout */
.material-select-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.material-select-wrapper select {
  width: auto;
  flex: 1 1 auto;
}

.ratio-display {
  font-weight: 600;
  display: none;
  white-space: nowrap;
}

/* --- Responsive Breakpoints --- */
@media (max-width: 1024px) {
  .calculator-layout {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .client-row {
    flex-direction: column;
    align-items: stretch;
  }
  .client-name-group,
  .care-input-group,
  .project-group {
    flex: 1 1 auto;
  }
  .full-width {
    width: 100%;
  }

  .calculator-layout {
    flex-direction: column;
    gap: var(--space-md);
  }
  .form-card,
  .results-container {
    flex: none;
    width: 100%;
    max-width: 100%;
  }
  .results-container {
    padding: 0;
  }

  .card {
    padding: var(--space-md);
  }
  .calculator-layout,
  .client-info-container {
    margin: var(--space-md) auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }
  .admin-container {
    padding: var(--space-sm);
  }
  .client-info-container,
  .card,
  .calculator-layout {
    padding: var(--space-sm);
    margin: var(--space-sm) auto;
  }
  .btn {
    width: 100%;
    margin-bottom: var(--space-sm);
  }
  .checkbox-group {
    gap: var(--space-sm);
    justify-content: flex-start;
  }
  .calculate-container,
  .export-container {
    margin: var(--space-sm) 0;
  }
  .export-container {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
  }
  .export-container .btn {
    width: auto;
    margin-bottom: 0;
  }
}

@media print {
  .site-header { display: none; }
}

.client-info-container label,
.material-select-wrapper label {
  font-weight: bold;
}

/* --- Bubble Chart Specific Styles --- */
/* Only apply these styles when on bubble.html page */
body.bubble-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  /* allow vertical scrolling on mobile while still hiding horizontal overflow */
  overflow-x: hidden;
}

body.bubble-page main.container {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

body.bubble-page .calculator-layout {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: var(--space-lg);
  margin: var(--space-lg) auto;
  max-width: 85vw;
  flex: 1 1 0;
  overflow-y: auto;
  min-height: calc(100vh - 150px);
}

body.bubble-page .card {
  flex: 1 1 auto;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px var(--shadow);
  padding: var(--space-lg);
  max-width: 90%;
  max-height: 90%;
  overflow: auto;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

/* Specific styles for the coordinate container on bubble page */
body.bubble-page .input-card {
  flex: none;
  width: 100%;
  display: block;
}

body.bubble-page .input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  flex: 1 1 280px;
  max-width: 30%;
  min-width: 200px;
}

body.bubble-page .plot-container {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: var(--space-lg);
  flex: 1 1 auto;
  width: 100%;
  height: 100%;
  max-width: 85vw;
  margin: 0 auto var(--space-lg);
}

body.bubble-page .plot-container .card {
  flex: 1 1 50%;
  margin: 0 0 var(--space-lg);
  max-width: none;
  max-height: none;
  height: auto;
}

/* Risk bubble chart canvas sizing */
#riskBubbleChart,
#postRiskBubbleChart {
  width: 100%;
  height: 80%;
  max-width: 800px;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Coordinate Input Styling for bubble page */
#coordsInput,
#postCoordsInput {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: border-color 0.3s ease;
}

.validation-message {
  color: #d00;
  font-size: 0.9rem;
  margin-top: 4px;
  display: none;
}

#coordsInput:focus,
#postCoordsInput:focus {
  border-color: var(--color-accent);
  outline: none;
}

/* --- Bubble Page Responsive Breakpoints --- */
@media (max-width: 1024px) {
  body.bubble-page .calculator-layout {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  body.bubble-page .calculator-layout {
    flex-direction: column;
    gap: var(--space-md);
    height: auto;
    overflow: visible;
    min-height: auto;
  }

  body.bubble-page .input-container,
  body.bubble-page .plot-container {
    flex: none;
    width: 100%;
    max-width: 100%;
    flex-direction: column;
    flex-basis: auto;
  }
  
  body.bubble-page .card {
    flex: none;
    width: 100%;
    max-width: 100%;
    max-height: none;
    padding: var(--space-md);
  }
  
  body.bubble-page .card:first-child {
    flex: none;
    width: 100%;
  }
  
  body.bubble-page .calculator-layout {
    margin: var(--space-md) auto;
  }
}

@media (max-width: 480px) {
  body.bubble-page .container {
    padding: 0 var(--space-sm);
  }

  body.bubble-page .card,
  body.bubble-page .calculator-layout {
    padding: var(--space-sm);
    margin: var(--space-sm) auto;
  }

  body.bubble-page .input-container,
  body.bubble-page .plot-container {
    padding: 0;
    margin: 0;
    flex-direction: column;
  }

  body.bubble-page .btn {
    width: 100%;
    margin-bottom: var(--space-sm);
  }
}

/* Additional adjustments for very small screens */
@media (max-width: 480px) {
  body.bubble-page .input-container {
    max-width: none;
    width: 100%;
    flex: none;
  }
  body.bubble-page .plot-container {
    max-width: none;
    width: 100%;
  }
}

/* --- Guidelines Page Styles --- */
body.guidelines-page .checklist-container {
  max-width: 750px;
  width: 100%;
  margin: var(--space-lg) auto;
}
body.guidelines-page .checklist {
  list-style: none;
  padding: 0;
}
body.guidelines-page .checklist-item {
  margin-bottom: var(--space-md);
}
body.guidelines-page .checklist-item label {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}
body.guidelines-page .checklist-item ul {
  margin-top: var(--space-sm);
}
body.guidelines-page .page-logo {
  display: block;
  margin: var(--space-md) auto;
  max-width: 300px;
  height: auto;
}
body.guidelines-page .shipping-address {
  text-align: center;
  font-weight: 600;
  font-style: normal;
  margin-top: var(--space-sm);
}