/* PHASE:2:START — /src/css/tools.css — Unified Tool Page Styles */
/* =================================================================
   FILE: /src/css/tools.css
   Single stylesheet for ALL calculator tool pages.
   Injected by build.js for every PAGE_TYPE: tool.
   No per-tool CSS files. Scoped overrides via data-tool-id on <body>.

   Mobile-first. Base = 375px.
   Breakpoints: 600px (tablet), 768px (small desktop), 1140px (wide)
   ================================================================= */


/* ─── PHASE:2:START — CSS Custom Properties ─────────────────────────────── */

:root {
  /* These extend global.css tokens — do not redefine vars from global.css */
  --tool-input-bg:       #fafafa;
  --tool-input-border:   #ccc;
  --tool-input-focus:    var(--color-primary, #E85D26);
  --tool-card-bg:        var(--color-bg-alt, #f8f8f8);
  --tool-card-radius:    8px;
  --tool-card-border:    1px solid var(--color-border, #e0e0e0);
  --tool-section-gap:    32px;
  --tool-error-color:    #c0392b;
  --tool-risk-high:      #d32f2f;
  --tool-risk-medium:    #f57c00;
  --tool-risk-low:       #388e3c;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Tool Page Wrapper ─────────────────────────────────── */

.tool-page {
  padding: 0 16px;
  box-sizing: border-box;
}

/* Constrain all direct children and named sections to max-width */
.tool-page > *,
.tool-page .tool-layout,
.tool-page .tool-hero,
.tool-page .tool-explainer,
.tool-page .tool-specs-table,
.tool-page .tool-faq,
.tool-page .tool-related {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 600px) {
  .tool-page { padding: 0 24px; }
}

@media (min-width: 1140px) {
  .tool-page { padding: 0 40px; }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Tool Hero ─────────────────────────────────────────── */

.tool-hero {
  padding: 24px 0 16px;
}

.tool-hero h1 {
  font-size: 1.5rem;
  line-height: 1.25;
  margin: 0 0 8px;
  color: var(--color-text, #1a1a1a);
}

.tool-subtitle {
  font-size: 1rem;
  color: var(--color-text-light, #666);
  margin: 0;
}

@media (min-width: 600px) {
  .tool-hero h1 { font-size: 1.75rem; }
}

@media (min-width: 768px) {
  .tool-hero { padding: 32px 0 20px; }
  .tool-hero h1 { font-size: 2rem; }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Tool Layout (inputs + sidebar + results) ───────────── */

.tool-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .tool-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 32px;
  }

  .tool-inputs {
    flex: 0 0 400px;
  }

  .tool-results {
    flex: 1;
    min-width: 0; /* prevents flex blowout */
  }
}

/* With sidebar ad: 3-column grid on large desktop */
@media (min-width: 1024px) {
  .tool-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    grid-template-rows: auto auto;
    gap: 0 24px;
    align-items: start;
  }

  .tool-inputs  { grid-column: 1; grid-row: 1; }
  .tool-results { grid-column: 1; grid-row: 2; }

  /* Sidebar ad slot takes column 2 full height */
  .tool-layout > .ad-slot {
    grid-column: 2;
    grid-row: 1 / 3;
  }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Input Section ─────────────────────────────────────── */

.tool-inputs {
  background: #fff;
  border: var(--tool-card-border);
  border-radius: var(--tool-card-radius);
  padding: 20px 16px;
}

/* Section heading inside inputs panel */
.inputs-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text, #1a1a1a);
  margin: 0 0 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.input-group:last-of-type {
  margin-bottom: 0;
}

.input-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text, #333);
}

.input-group input,
.input-group select {
  font-size: 16px; /* CRITICAL — prevents iOS auto-zoom on focus */
  padding: 10px 12px;
  border: 1px solid var(--tool-input-border);
  border-radius: 6px;
  background: var(--tool-input-bg);
  color: var(--color-text, #1a1a1a);
  width: 100%;
  box-sizing: border-box;
  min-height: 44px; /* minimum tap target */
  appearance: none;
  -webkit-appearance: none;
}

/* Chevron for selects */
.input-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.input-group input:focus,
.input-group select:focus {
  outline: 2px solid var(--tool-input-focus);
  outline-offset: 1px;
  border-color: var(--tool-input-focus);
  background: #fff;
}

.input-hint {
  font-size: 0.8rem;
  color: var(--color-text-light, #888);
  line-height: 1.4;
}

.input-error {
  font-size: 0.8rem;
  color: var(--tool-error-color);
  min-height: 1.1em;
  line-height: 1.4;
  display: block;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Calculate Button ──────────────────────────────────── */

.btn-calculate {
  display: block;
  width: 100%;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 700;
  background: var(--color-primary, #E85D26);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  min-height: 48px;
  margin-top: 8px;
  letter-spacing: 0.02em;
  transition: background 0.15s ease;
}

.btn-calculate:hover,
.btn-calculate:focus {
  background: var(--color-primary-dark, #c94e1f);
  outline: none;
}

.btn-calculate:active {
  background: #b34418;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Results Panel ─────────────────────────────────────── */

.tool-results,
#resultsPanel {
  background: #fff;
  border: var(--tool-card-border);
  border-radius: var(--tool-card-radius);
  padding: 20px 16px;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.results-header h2 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--color-text, #1a1a1a);
}

.results-disclaimer {
  font-size: 0.8rem;
  color: var(--color-text-light, #888);
  margin-top: 16px;
  line-height: 1.5;
  padding: 10px 14px;
  border-left: 3px solid var(--color-primary, #E85D26);
  background: var(--tool-card-bg);
  border-radius: 0 4px 4px 0;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Results Grid (standard tools) ─────────────────────── */
/* Used by: roof-sheet-calculator, purlin-spacing-calculator, roof-weight-calculator */

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.result-card {
  background: var(--tool-card-bg);
  border-radius: var(--tool-card-radius);
  padding: 16px 12px;
  text-align: center;
}

/* Primary card spans full width on mobile */
.result-card.result-primary {
  grid-column: 1 / -1;
  background: var(--color-primary, #E85D26);
  color: #fff;
}

.result-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  opacity: 0.85;
}

.result-value {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
  color: inherit;
}

.result-card.result-primary .result-value {
  font-size: 2.25rem;
}

.result-unit {
  display: block;
  font-size: 0.78rem;
  margin-top: 4px;
  opacity: 0.8;
}

.result-note {
  display: block;
  font-size: 0.75rem;
  opacity: 0.75;
  margin-top: 4px;
}

/* Breakdown list inside results */
.results-breakdown {
  background: var(--tool-card-bg);
  border-radius: var(--tool-card-radius);
  padding: 14px 16px;
  margin-bottom: 12px;
}

.results-breakdown h3 {
  font-size: 0.9rem;
  margin: 0 0 10px;
  font-weight: 700;
  color: var(--color-text, #1a1a1a);
}

.breakdown-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text, #333);
}

.breakdown-list li {
  padding: 5px 0;
  border-bottom: 1px solid var(--color-border, #e0e0e0);
}

.breakdown-list li:last-child {
  border-bottom: none;
}

@media (min-width: 768px) {
  /* 3 columns on desktop; primary card no longer spans full */
  .results-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .result-card.result-primary {
    grid-column: 1 / -1; /* keeps spanning — override per tool if needed */
  }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Print Button ──────────────────────────────────────── */

.btn-print {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 44px;
  border: 2px solid var(--color-primary, #E85D26);
  background: transparent;
  color: var(--color-primary, #E85D26);
  border-radius: 6px;
  cursor: pointer;
  margin-top: 12px;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-print:hover,
.btn-print:focus {
  background: var(--color-primary, #E85D26);
  color: #fff;
  outline: none;
}

/* Print header — hidden on screen */
.print-header {
  display: none;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Below-Calculator Sections ─────────────────────────── */

.tool-explainer,
.tool-specs-table,
.tool-faq,
.tool-related {
  margin-bottom: var(--tool-section-gap);
}

.tool-explainer h2,
.tool-specs-table h2,
.tool-faq h2,
.tool-related h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border, #f0f0f0);
  color: var(--color-text, #1a1a1a);
}

@media (min-width: 768px) {
  .tool-explainer h2,
  .tool-specs-table h2,
  .tool-faq h2,
  .tool-related h2 {
    font-size: 1.4rem;
  }
}

/* Ordered / unordered lists in explainer */
.tool-explainer ol,
.tool-explainer ul {
  padding-left: 20px;
  margin: 0;
}

.tool-explainer li {
  font-size: 0.95rem;
  color: var(--color-text, #333);
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Specs / Data Table ────────────────────────────────── */

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 8px;
}

.data-table,
.specs-table,
.tool-specs-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 480px;
}

.data-table th,
.specs-table th,
.tool-specs-table table th {
  background: var(--tool-card-bg);
  font-weight: 700;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--color-border, #e0e0e0);
  white-space: nowrap;
}

.data-table td,
.specs-table td,
.tool-specs-table table td {
  padding: 9px 12px;
  border: 1px solid var(--color-border, #e0e0e0);
  color: var(--color-text, #444);
  vertical-align: top;
}

.data-table tr:nth-child(even) td,
.specs-table tr:nth-child(even) td,
.tool-specs-table table tr:nth-child(even) td {
  background: #fafafa;
}

.table-note {
  font-size: 0.82rem;
  color: var(--color-text-light, #666);
  margin-top: 8px;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — FAQ Section ───────────────────────────────────────── */

.faq-item {
  border-bottom: 1px solid var(--color-border, #f0f0f0);
  padding: 16px 0;
}

.faq-item:first-child {
  padding-top: 0;
}

.faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.faq-question {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 8px;
  line-height: 1.4;
  color: var(--color-text, #1a1a1a);
}

.faq-answer,
.faq-answer p {
  font-size: 0.95rem;
  color: var(--color-text, #555);
  line-height: 1.6;
  margin: 0;
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Related Tools ─────────────────────────────────────── */
/* Covers both grid (.related-grid) and list (.related-list) patterns */

/* Grid variant (aluminium-vs-gi uses this) */
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (min-width: 600px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px;
  border: var(--tool-card-border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--color-text, #333);
  font-weight: 600;
  font-size: 0.9rem;
  transition: border-color 0.15s ease, background 0.15s ease;
  min-height: 44px;
}

.related-card:hover {
  border-color: var(--color-primary, #E85D26);
  background: #fff8f5;
  color: var(--color-primary, #E85D26);
}

.related-title {
  font-size: 0.9rem;
  font-weight: 700;
}

.related-desc {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-light, #666);
}

/* List variant (roof-sheet uses this) */
.related-tools-list,
.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-tools-list li,
.related-list li {
  font-size: 0.95rem;
}

.related-tools-list a,
.related-list a {
  color: var(--color-primary, #E85D26);
  font-weight: 600;
  text-decoration: none;
}

.related-tools-list a:hover,
.related-list a:hover {
  text-decoration: underline;
}

.related-tools-list a strong {
  display: block;
  font-size: 0.95rem;
}

.related-tools-list a span {
  display: block;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--color-text-light, #666);
  margin-top: 2px;
}

@media (min-width: 768px) {
  .related-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px 24px;
  }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:3:START — Comparison Tool Overrides (aluminium-vs-gi only) ──── */
/* Scoped with data-tool-id so these never affect other tool pages           */

body[data-tool-id="aluminium-vs-gi-calculator"] {

  /* GI / Aluminium accent colours */
  --gi-accent: #555555;
  --al-accent: var(--color-primary, #E85D26);
  --badge-bg: var(--color-primary, #E85D26);
  --badge-color: #ffffff;
  --summary-bg: #f5f5f5;
  --row-border: #eeeeee;

  /* Comparison cards: stacked on mobile, side-by-side at 600px */
  .comparison-layout {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 20px;
  }

  @media (min-width: 600px) {
    .comparison-layout {
      flex-direction: row;
      align-items: flex-start;
    }
  }

  .comparison-card {
    flex: 1;
    border: var(--tool-card-border);
    border-radius: var(--tool-card-radius);
    padding: 16px;
    background: #fff;
    border-top: 3px solid #ccc;
    position: relative;
  }

  .comparison-card.gi-card  { border-top-color: var(--gi-accent); }
  .comparison-card.al-card  { border-top-color: var(--al-accent); }

  .comparison-card.recommended {
    border-top-width: 5px;
    box-shadow: 0 4px 16px rgba(232, 93, 38, 0.18);
  }

  .recommended-badge {
    display: inline-block;
    background: var(--badge-bg);
    color: var(--badge-color);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
  }

  .card-title    { font-size: 16px; font-weight: 700; color: #222; margin: 0 0 2px; }
  .card-standard { font-size: 12px; color: #999; margin: 0 0 14px; }

  /* Row pairs inside each comparison card */
  .comparison-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 9px 0;
    border-bottom: 1px solid var(--row-border);
    gap: 8px;
  }

  .comparison-row--last { border-bottom: none; }

  .row-label { font-size: 13px; color: #666; flex-shrink: 0; padding-right: 8px; }
  .row-value { font-size: 13px; font-weight: 600; color: #222; text-align: right; }

  /* Risk colour classes */
  .risk-high   { color: var(--tool-risk-high); }
  .risk-medium { color: var(--tool-risk-medium); }
  .risk-low    { color: var(--tool-risk-low); }

  /* Summary block below comparison cards */
  .summary-stats {
    background: var(--summary-bg);
    border-radius: 6px;
    padding: 14px 16px;
    margin-bottom: 20px;
  }

  .summary-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 7px 0;
    font-size: 14px;
    color: #444;
    border-bottom: 1px solid #e8e8e8;
  }

  .summary-item:first-child { padding-top: 0; }
  .summary-item:last-child  { border-bottom: none; }

  .summary-item--recommendation {
    background: #fff8f5;
    margin: 8px -16px -14px -16px;
    padding: 12px 16px;
    border-radius: 0 0 6px 6px;
    border-bottom: none;
  }

  .summary-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
}

/* ─── PHASE:3:END ──────────────────────────────────────────────────────── */


/* ─── PHASE:2:START — Print Styles ──────────────────────────────────────── */

@media print {
  /* Hide everything except the results panel */
  .site-header,
  .site-footer,
  .breadcrumb,
  .tool-hero,
  .tool-inputs,
  .ad-slot,
  .tool-explainer,
  .tool-specs-table,
  .tool-faq,
  .tool-related,
  .btn-print,
  .btn-calculate,
  .results-header,
  .results-disclaimer {
    display: none !important;
  }

  /* Show print header */
  .print-header {
    display: flex !important;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 2px solid #333;
    font-size: 0.85rem;
    color: #333;
  }

  .print-header h2,
  .print-site {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 4px;
  }

  .print-header p { margin: 0; color: #555; }

  #resultsPanel,
  .tool-results {
    display: block !important;
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
  }

  /* 3-column grid on print */
  .results-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }

  .result-card.result-primary {
    grid-column: auto !important;
  }

  /* Comparison tool print overrides */
  .comparison-layout {
    flex-direction: row !important;
  }

  .comparison-card,
  .summary-stats {
    break-inside: avoid;
  }
}

/* ─── PHASE:2:END ──────────────────────────────────────────────────────── */