/* ==========================================================================
   RS Electricals & HVAC Solutions - Tools Subdomain Theme (tools.rsele-hvac.com)
   Harmonized 1:1 with Parent Site (rsele-hvac.com)
   Palette: Dark Industrial Slate / Copper Amber / Steel Teal / Warm Gold
   Fonts: Oswald (Headings), IBM Plex Sans (Body), IBM Plex Mono (Technical/Data)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=Oswald:wght@400;500;600;700&display=swap');

:root {
  --bg: #1c2126;
  --bg2: #171b1f;
  --bg3: #14171a;
  --surface: #23282e;
  --surface2: #2b3138;
  --surface-hover: #323942;
  
  --blue: #c8813a;          /* Industrial Copper/Amber primary */
  --blue-bright: #e0a05c;   /* Bright Accent Amber */
  --teal: #5b7c94;          /* Steel Teal */
  --teal-light: #7ea3bd;    /* Bright Teal */
  --gold: #cbb26a;          /* Engineering Brass Gold */
  --gold-light: #e0cf94;
  
  --red: #d1453b;
  --amber: #d99a2b;
  --green: #5b9a5f;
  --green-bright: #68bd6e;
  
  --text: #eef0f2;
  --text-dim: #9aa3ab;
  --text-muted: #6b7580;
  
  --border: rgba(154, 163, 171, 0.16);
  --border-bright: rgba(224, 160, 92, 0.35);
  --border-teal: rgba(91, 124, 148, 0.35);
  
  --glow-blue: 0 0 20px rgba(200, 129, 58, 0.35);
  --glow-teal: 0 0 20px rgba(91, 124, 148, 0.30);
  --glow-gold: 0 0 16px rgba(203, 178, 106, 0.25);
  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(200, 129, 58, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(91, 124, 148, 0.04) 0%, transparent 40%);
}

/* ==========================================================================
   NAVIGATION BAR (Matches Parent Site)
   ========================================================================== */
.tools-nav {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 70px;
  background: rgba(23, 27, 31, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 40px);
}

.tools-nav-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.nav-brand-logo {
  height: 38px;
  width: auto;
  border-radius: var(--radius-sm);
  transition: transform 0.3s ease;
}

.nav-brand:hover .nav-brand-logo {
  transform: scale(1.05);
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: 'Oswald', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.2;
}

.brand-title span {
  color: var(--blue-bright);
}

.brand-tagline {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--teal-light);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-decoration: none;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--blue-bright);
  background: rgba(224, 160, 92, 0.08);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-parent-site {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-decoration: none;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.25s;
}

.btn-parent-site:hover {
  border-color: var(--teal);
  color: var(--text);
  background: rgba(91, 124, 148, 0.1);
}

.btn-nav-quote {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal) 100%);
  text-decoration: none;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(224, 160, 92, 0.4);
  box-shadow: 0 0 16px rgba(200, 129, 58, 0.25);
  transition: all 0.3s;
}

.btn-nav-quote:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(200, 129, 58, 0.4);
}

/* ==========================================================================
   PAGE CONTAINER & HERO SECTION
   ========================================================================== */
.tools-main {
  flex: 1;
  padding: 30px clamp(16px, 4vw, 40px) 60px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}

.tools-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.tools-breadcrumbs a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.tools-breadcrumbs a:hover {
  color: var(--blue-bright);
}

.tools-hero {
  margin-bottom: 36px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--teal-light);
  text-transform: uppercase;
  padding: 4px 12px;
  background: rgba(91, 124, 148, 0.12);
  border: 1px solid var(--border-teal);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.hero-pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-bright);
  box-shadow: 0 0 6px var(--blue-bright);
}

.tools-h1 {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 12px;
}

.tools-h1 span.accent {
  color: var(--blue-bright);
}

.tools-h1 span.teal {
  color: var(--teal-light);
}

.tools-lead {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 820px;
  line-height: 1.65;
}

/* ==========================================================================
   UNIFIED 4-BADGE VERIFICATION STRIP
   ========================================================================== */
.verification-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 22px 0 28px;
  padding: 12px 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.v-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.v-badge.formula {
  background: rgba(91, 154, 95, 0.15);
  color: #8ed293;
  border: 1px solid rgba(91, 154, 95, 0.4);
}

.v-badge.screening {
  background: rgba(217, 154, 43, 0.15);
  color: #f1bf66;
  border: 1px solid rgba(217, 154, 43, 0.4);
}

.v-badge.standards {
  background: rgba(91, 124, 148, 0.18);
  color: #a4c9e4;
  border: 1px solid rgba(91, 124, 148, 0.4);
}

.v-badge.pe-review {
  background: rgba(209, 69, 59, 0.15);
  color: #f18c84;
  border: 1px solid rgba(209, 69, 59, 0.4);
}

.v-arrow {
  color: var(--text-muted);
  font-size: 12px;
}

/* ==========================================================================
   CALCULATOR LAYOUT GRID (Inputs + Live Calculation Sheet)
   ========================================================================== */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

@media (max-width: 992px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

/* Left Column: Input Form Card */
.calc-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 2.5vw, 28px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-family: 'Oswald', sans-serif;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-title-icon {
  color: var(--blue-bright);
}

.panel-preset-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.panel-preset-btn:hover {
  color: var(--blue-bright);
  border-color: var(--border-bright);
}

/* Input Fields & Dual Controls */
.input-row {
  margin-bottom: 20px;
}

.input-label-wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.input-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.input-unit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
}

.input-control-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.slider-input {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--bg3);
  border-radius: 3px;
  outline: none;
  border: 1px solid var(--border);
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue-bright);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(224, 160, 92, 0.6);
  border: 2px solid var(--bg);
  transition: transform 0.15s ease;
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.num-input {
  width: 110px;
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  text-align: right;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.num-input:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 8px rgba(224, 160, 92, 0.3);
}

.select-control {
  width: 100%;
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s;
  cursor: pointer;
}

.select-control:focus {
  border-color: var(--blue-bright);
}

.input-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
  line-height: 1.4;
}

/* Right Column: Results & Technical Calculation Sheet */
.output-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 2.5vw, 28px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  position: sticky;
  top: 90px;
}

.sheet-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.15em;
  color: var(--gold-light);
  background: rgba(203, 178, 106, 0.12);
  border: 1px solid rgba(203, 178, 106, 0.3);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

/* Primary Highlight Result Card */
.highlight-box {
  background: linear-gradient(145deg, var(--bg2) 0%, rgba(35, 40, 46, 0.8) 100%);
  border: 1.5px solid var(--border-bright);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 22px;
  box-shadow: inset 0 0 20px rgba(224, 160, 92, 0.05);
}

.highlight-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.highlight-value {
  font-family: 'Oswald', sans-serif;
  font-size: clamp(32px, 4vw, 46px);
  font-weight: 700;
  color: var(--blue-bright);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.highlight-unit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 16px;
  font-weight: 500;
  color: var(--gold-light);
}

.highlight-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Secondary Calculation Metric Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}

.metric-cell {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.metric-cell-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.metric-cell-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}

.metric-cell-value.teal { color: var(--teal-light); }
.metric-cell-value.gold { color: var(--gold-light); }
.metric-cell-value.green { color: var(--green-bright); }
.metric-cell-value.amber { color: var(--amber); }

/* Status & Compliance Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.status-pill.pass {
  background: rgba(91, 154, 95, 0.15);
  color: #8ed293;
  border: 1px solid rgba(91, 154, 95, 0.4);
}

.status-pill.warn {
  background: rgba(217, 154, 43, 0.15);
  color: #f1bf66;
  border: 1px solid rgba(217, 154, 43, 0.4);
}

/* Action Buttons (Print + WhatsApp Lead) */
.panel-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.btn-action-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #25d366;
  color: #0b2512;
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.25s;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.25);
}

.btn-action-whatsapp:hover {
  background: #2ef378;
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(37, 211, 102, 0.35);
}

.btn-action-print {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg2);
  color: var(--text);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-action-print:hover {
  border-color: var(--teal);
  color: var(--teal-light);
  background: rgba(91, 124, 148, 0.12);
}

/* ==========================================================================
   TECHNICAL ACCORDION & STANDARDS PANEL
   ========================================================================== */
.technical-details {
  margin-top: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tech-header {
  padding: 18px 24px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tech-title {
  font-family: 'Oswald', sans-serif;
  font-size: 17px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text);
}

.tech-body {
  padding: 24px;
}

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
}

.tech-block h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--blue-bright);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 10px;
}

.tech-block p, .tech-block li {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.65;
}

.tech-block ul {
  padding-left: 20px;
  margin-top: 6px;
}

.formula-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue-bright);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--gold-light);
  margin: 10px 0;
  overflow-x: auto;
}

/* ==========================================================================
   STATUTORY TIER D DISCLAIMER
   ========================================================================== */
.statutory-disclaimer {
  margin-top: 36px;
  background: rgba(209, 69, 59, 0.06);
  border: 1px solid rgba(209, 69, 59, 0.25);
  border-left: 4px solid var(--red);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.disclaimer-title {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #f18c84;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.disclaimer-text {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ==========================================================================
   PORTAL CARDS & SEARCH DASHBOARD (Hub Page)
   ========================================================================== */
.search-filter-bar {
  display: flex;
  gap: 14px;
  margin: 24px 0 32px;
  flex-wrap: wrap;
}

.search-input-wrap {
  flex: 1;
  min-width: 280px;
  position: relative;
}

.search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px 12px 42px;
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  outline: none;
  transition: all 0.25s;
}

.search-input:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 16px rgba(224, 160, 92, 0.2);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-chip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-chip:hover, .filter-chip.active {
  background: var(--blue-bright);
  color: #171b1f;
  font-weight: 700;
  border-color: var(--blue-bright);
}

.tools-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 22px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background 0.3s;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-bright);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.tool-card.electrical:hover::before {
  background: linear-gradient(90deg, var(--blue-bright), var(--gold));
}

.tool-card.hvac:hover::before {
  background: linear-gradient(90deg, var(--teal-light), #38bdf8);
}

.tool-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.tool-discipline-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.tool-discipline-tag.elec {
  background: rgba(224, 160, 92, 0.15);
  color: var(--blue-bright);
  border: 1px solid rgba(224, 160, 92, 0.3);
}

.tool-discipline-tag.hvac {
  background: rgba(91, 124, 148, 0.18);
  color: var(--teal-light);
  border: 1px solid rgba(91, 124, 148, 0.3);
}

.tool-card-h3 {
  font-family: 'Oswald', sans-serif;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 8px;
}

.tool-card-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.55;
  margin-bottom: 18px;
  flex: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
}

.tool-std-ref {
  color: var(--text-muted);
}

.tool-cta-link {
  color: var(--blue-bright);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   FOOTER (Matches Parent Site)
   ========================================================================== */
.tools-footer {
  margin-top: auto;
  background: var(--bg3);
  border-top: 1px solid var(--border);
  padding: 32px clamp(16px, 4vw, 40px);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-text {
  font-size: 12.5px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-links a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--blue-bright);
}

/* ==========================================================================
   PRINT STYLESHEET (Clean Engineering Calculation Sheet)
   ========================================================================== */
@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }
  .tools-nav, .panel-actions, .panel-preset-btn, .search-filter-bar, .tools-footer {
    display: none !important;
  }
  .tools-main {
    max-width: 100% !important;
    padding: 0 !important;
  }
  .calc-grid {
    display: block !important;
  }
  .calc-panel, .output-panel, .technical-details, .statutory-disclaimer {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    background: #fff !important;
    color: #000 !important;
    page-break-inside: avoid;
    margin-bottom: 20px;
  }
  .highlight-value {
    color: #000 !important;
  }
}