/* ============================================
   Brick Calculator — Tool-specific styles
   Uses only CSS variables from /assets/css/style.css
   ============================================ */

/* ── Trust Chips ── */
.trust-chips {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--color-muted);
}
.trust-chip-icon {
  color: var(--color-primary);
  font-weight: 700;
}

/* ── Unit Toggle (pill group) ── */
.unit-toggle {
  display: inline-flex;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 3px;
  margin-bottom: 28px;
}
.unit-toggle-btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 9px 24px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.5px;
}
.unit-toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 8px rgba(244, 100, 10, 0.3);
}
.unit-toggle-btn:hover:not(.active) {
  color: var(--color-text);
}

/* ── Wall Type Grid ── */
.wall-type-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}
.wall-type-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.wall-type-card:hover {
  border-color: var(--color-border-hover);
}
.wall-type-card.active {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}
.wall-type-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}
/* CSS-drawn brick: single */
.wall-type-icon .brick-single {
  width: 36px;
  height: 18px;
  border: 2px solid var(--color-muted);
  border-radius: 3px;
  position: relative;
}
.wall-type-card.active .brick-single {
  border-color: var(--color-primary);
}
/* CSS-drawn brick: double */
.wall-type-icon .brick-double {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.wall-type-icon .brick-double span {
  width: 36px;
  height: 14px;
  border: 2px solid var(--color-muted);
  border-radius: 3px;
  display: block;
}
.wall-type-card.active .brick-double span {
  border-color: var(--color-primary);
}
.wall-type-info h4 {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.wall-type-info .wall-type-sub {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.5;
  margin: 0;
}

/* ── Wall Area Display ── */
.wall-area-display {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-input);
  padding: 14px 18px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.wall-area-display .area-label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-muted);
}
.wall-area-display .area-value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-yellow);
}

/* ── Brick Details Collapsible ── */
.brick-details-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 12px 0;
  transition: color var(--transition);
  width: 100%;
  text-align: left;
}
.brick-details-toggle:hover {
  color: var(--color-primary-hover);
}
.brick-details-toggle .toggle-arrow {
  font-size: 12px;
  transition: transform 0.35s ease;
  display: inline-block;
}
.brick-details-toggle.open .toggle-arrow {
  transform: rotate(90deg);
}
.brick-details-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.brick-details-panel.open {
  max-height: 500px;
}
.brick-details-inner {
  padding: 8px 0 16px;
}

/* ── Wastage Group (segmented buttons) ── */
.wastage-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 8px;
}
.wastage-btn {
  flex: 1;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 11px 16px;
  border: none;
  background: var(--color-surface2);
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition);
  border-right: 1px solid var(--color-border);
  white-space: nowrap;
}
.wastage-btn:last-child {
  border-right: none;
}
.wastage-btn:hover:not(.active) {
  color: var(--color-text);
  background: var(--color-surface3);
}
.wastage-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
}
.wastage-hint {
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 6px;
  line-height: 1.5;
}

/* ── Cost Section Collapsible ── */
.cost-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 12px 0;
  transition: color var(--transition);
  width: 100%;
  text-align: left;
}
.cost-toggle:hover {
  color: var(--color-primary-hover);
}
.cost-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.cost-panel.open {
  max-height: 200px;
}
.cost-panel-inner {
  padding: 8px 0 16px;
}

/* ── Calculate Button Row ── */
.calc-actions {
  margin-top: 28px;
}

/* ── Results Box ── */
.results-box {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-yellow);
  border-radius: 10px;
  padding: 28px;
  margin-top: 36px;
  display: none;
}
.results-box.visible {
  display: block;
}
.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.results-header h3 {
  font-family: var(--font-heading);
  font-size: 26px;
  letter-spacing: 1px;
  margin: 0;
}
.results-header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* Result Cards Grid */
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 20px;
  transition: border-color var(--transition);
}
.result-card:hover {
  border-color: var(--color-border-hover);
}
.result-card.primary {
  grid-column: 1 / -1;
}
.result-card.highlight {
  border-left: 3px solid var(--color-primary);
}
.result-card-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}
.result-card-value {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 600;
  color: var(--color-yellow);
  line-height: 1.1;
}
.result-card-sub {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 6px;
}

/* Results Disclaimer */
.results-disclaimer {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
  line-height: 1.7;
}

/* ── Copy Feedback ── */
.copy-feedback {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition);
  margin-right: 8px;
  align-self: center;
}
.copy-feedback.show {
  opacity: 1;
}

/* ── Inline validation error ── */
.field-error-msg {
  font-size: 11px;
  color: var(--color-primary);
  margin-top: 4px;
  display: none;
}
.field-error-msg.visible {
  display: block;
}
.form-input.input-error {
  border-color: var(--color-primary);
}

/* ── How-To Steps ── */
.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.howto-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  position: relative;
  overflow: hidden;
}
.howto-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-yellow));
}
.howto-number {
  font-family: var(--font-heading);
  font-size: 48px;
  color: var(--color-primary);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  min-width: 50px;
}
.howto-content h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}
.howto-content p {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.7;
  margin: 0;
}

/* ── FAQ Accordion ── */
.faq-list {
  max-width: 800px;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  padding: 16px 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition);
  gap: 16px;
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-question.active {
  color: var(--color-primary);
}
.faq-arrow {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--color-muted);
  transition: transform var(--transition), color var(--transition);
}
.faq-question.active .faq-arrow {
  color: var(--color-primary);
}
.faq-answer {
  display: none;
  padding: 0 0 16px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.8;
}
.faq-answer.visible {
  display: block;
}

/* ── Ad Placeholders ── */
.ad-placeholder {
  background: var(--color-surface2);
  border: 2px dashed var(--color-border);
  border-radius: 6px;
  margin: 24px auto;
  display: block;
}
.ad-leaderboard {
  width: 728px;
  height: 90px;
  max-width: 100%;
}
.ad-rectangle {
  width: 300px;
  height: 250px;
}
.ad-rectangle-wrap {
  overflow: hidden;
}
.ad-rectangle-desktop {
  float: right;
  margin: 0 0 24px 24px;
}

/* ── Related Tools Grid ── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ── Section Divider ── */
.section-divider {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 28px 0;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 900px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .wall-type-grid {
    grid-template-columns: 1fr;
  }
  .result-grid {
    grid-template-columns: 1fr;
  }
  .ad-leaderboard {
    width: 320px;
    height: 50px;
  }
  .ad-rectangle-desktop {
    float: none;
    margin: 24px auto;
  }
  .trust-chips {
    flex-direction: column;
    gap: 8px;
  }
  .results-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .results-header-actions {
    width: 100%;
    justify-content: flex-start;
  }
  .howto-card {
    flex-direction: column;
    gap: 10px;
  }
  .howto-number {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .unit-toggle {
    flex-direction: column;
    border-radius: var(--radius-sm);
  }
  .unit-toggle-btn {
    padding: 8px 16px;
    font-size: 12px;
    border-radius: var(--radius-sm);
  }
  .wastage-btn {
    padding: 9px 10px;
    font-size: 12px;
  }
  .result-card-value {
    font-size: 24px;
  }
  .ad-leaderboard {
    width: 300px;
    height: 50px;
  }
}

/* ═══════════════════════════════════════
   PRINT STYLES
   ═══════════════════════════════════════ */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  .navbar,
  .footer,
  #navbar,
  #footer,
  .ad-placeholder,
  .calc-title,
  .unit-toggle,
  .wall-type-grid,
  .brick-details-toggle,
  .brick-details-panel,
  .wastage-group,
  .wastage-hint,
  .cost-toggle,
  .cost-panel,
  .calc-actions,
  .trust-chips,
  .page-hero-badge,
  .breadcrumb,
  .results-header-actions,
  .howto-steps,
  .faq-list,
  .related-grid,
  .section-header,
  .form-group,
  .form-row,
  .wall-area-display,
  .section-divider,
  #howtoSection,
  #faqSection,
  #relatedSection,
  #articleSection {
    display: none !important;
  }
  .results-box {
    display: block !important;
    border: 1px solid #ccc;
    border-left: 3px solid #F2B705;
    box-shadow: none;
  }
  .results-box::after {
    content: 'Generated by BuildCalcTools.site';
    display: block;
    margin-top: 20px;
    font-size: 11px;
    color: #999;
    text-align: center;
  }
  .result-card {
    border: 1px solid #ddd;
    break-inside: avoid;
  }
  .result-card-value {
    color: #222;
  }
  .calculator-wrap {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .calculator-wrap::before {
    display: none;
  }
  .page-hero {
    background: none;
    padding: 20px 0;
  }
  .page-hero::after {
    display: none;
  }
  .hero-orb-1,
  .hero-orb-2 {
    display: none;
  }
}