/* =============================================================================
   styles.css — NEC Electrical Calculator Suite Design System
   Source of truth for all UI tokens, layout, and component styles.
   ============================================================================= */

/* ─── Google Font Import ─────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ─── CSS Custom Properties (Design Tokens) ─────────────────────────────── */
:root {
  /* Colors */
  --color-primary:       #1E40AF;  /* deep blue */
  --color-secondary:     #3B82F6;  /* medium blue */
  --color-bg:            #F8FAFF;  /* off-white blue tint */
  --color-surface:       #FFFFFF;
  --color-text:          #111827;  /* near-black */
  --color-text-sec:      #6B7280;  /* secondary text */
  --color-success:       #16A34A;  /* green – NEC compliant */
  --color-warning:       #D97706;  /* amber – borderline */
  --color-danger:        #DC2626;  /* red – exceeds limit */
  --color-border:        #E5E7EB;

  --color-success-bg:    #F0FDF4;
  --color-warning-bg:    #FFFBEB;
  --color-danger-bg:     #FEF2F2;

  /* Typography */
  --font-family:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm:        0.875rem;  /* 14px */
  --font-size-base:      1rem;      /* 16px */
  --font-size-lg:        1.125rem;  /* 18px */
  --font-size-xl:        1.25rem;   /* 20px */
  --font-size-2xl:       1.5rem;    /* 24px */
  --font-size-3xl:       1.875rem;  /* 30px */
  --font-size-result:    1.75rem;   /* 28px – result values */

  /* Spacing (8px base system) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */

  /* Border radius */
  --radius-sm:   4px;   /* badges, tags */
  --radius-md:   8px;   /* inputs, cards */
  --radius-lg:   12px;  /* large cards */

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:   0 10px 15px rgba(0,0,0,0.10), 0 4px 6px rgba(0,0,0,0.05);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-med:  250ms ease;

  /* Layout */
  --max-width:   1200px;
  --content-width: 960px;
}

/* ─── CSS Reset & Base ───────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { display: block; max-width: 100%; }

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary); text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul, ol { list-style: none; }

/* ─── Layout Utilities ───────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .container { padding-inline: var(--space-6); }
}
@media (min-width: 1024px) {
  .container { padding-inline: var(--space-8); }
}

.flex    { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* ─── Header / Navigation ────────────────────────────────────────────────── */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: var(--space-4);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo:hover { color: var(--color-secondary); text-decoration: none; }

.nec-badge {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--color-text-sec);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}
.site-nav a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
  text-decoration: none;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  font-size: var(--font-size-base);
  color: var(--color-text);
  transition: background var(--transition-fast);
}
.nav-toggle:hover { background: var(--color-bg); }

@media (max-width: 767px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-2) var(--space-4);
    box-shadow: var(--shadow-md);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
  }
}

/* ─── Main content area ──────────────────────────────────────────────────── */
.site-main { flex: 1; }

/* ─── Hero Section ───────────────────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 50%, var(--color-secondary) 100%);
  color: #fff;
  padding: var(--space-12) 0 var(--space-10);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, var(--font-size-3xl));
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.page-hero p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.6;
}

/* Calculator page hero (less height – above the fold with form) */
.calc-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 100%);
  color: #fff;
  padding: var(--space-8) 0 var(--space-6);
}

.calc-hero h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.calc-hero p {
  opacity: 0.88;
  font-size: var(--font-size-base);
  max-width: 700px;
  line-height: 1.6;
}

/* ─── Tool Grid (Home Page) ──────────────────────────────────────────────── */
.tool-grid-section {
  padding: var(--space-12) 0;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  color: var(--color-text-sec);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-base);
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-med);
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--color-secondary);
}

.tool-card {
  text-decoration: none;
  color: inherit;
}
.tool-card:hover { text-decoration: none; }

.tool-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
  display: block;
}

.tool-card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.tool-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-sec);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-4);
}

.tool-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: gap var(--transition-fast);
}
.tool-card:hover .tool-card__cta { gap: var(--space-2); }

/* ─── Calculator Layout ──────────────────────────────────────────────────── */
.calc-layout {
  padding: var(--space-8) 0;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .calc-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* ─── Form Styles ────────────────────────────────────────────────────────── */
.form-panel, .result-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.panel-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-bg);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}
.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  margin-top: var(--space-1);
  display: none;
}
.form-error.is-visible { display: block; }

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: var(--space-8);
  cursor: pointer;
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: #1d4ed8;
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-bg);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-sec);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

.btn-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

/* ─── Result Panel ───────────────────────────────────────────────────────── */
.result-value {
  font-size: var(--font-size-result);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.result-unit {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-sec);
  margin-left: var(--space-1);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-bg);
}
.result-row:last-child { border-bottom: none; }

.result-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-sec);
  font-weight: 500;
}

/* ─── Compliance Badges ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(22, 163, 74, 0.25);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid rgba(217, 119, 6, 0.25);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid rgba(220, 38, 38, 0.25);
}

/* Large compliance block */
.compliance-block {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-top: var(--space-4);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.compliance-block.green {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1.5px solid rgba(22, 163, 74, 0.3);
}
.compliance-block.amber {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1.5px solid rgba(217, 119, 6, 0.3);
}
.compliance-block.red {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1.5px solid rgba(220, 38, 38, 0.3);
}

/* ─── Ad Placements ──────────────────────────────────────────────────────── */
.ad-leaderboard {
  width: 100%;
  min-height: 90px;
  background: rgba(0,0,0,0.03);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-sec);
  font-size: var(--font-size-sm);
  margin: var(--space-6) 0;
}

.ad-rectangle {
  width: 300px;
  min-height: 250px;
  background: rgba(0,0,0,0.03);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-sec);
  font-size: var(--font-size-sm);
}

.ad-mobile-banner {
  display: none;
  width: 100%;
  min-height: 50px;
  background: rgba(0,0,0,0.03);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--color-text-sec);
  font-size: var(--font-size-sm);
  margin: var(--space-4) 0;
}

@media (max-width: 767px) {
  .ad-rectangle { display: none; }
  .ad-mobile-banner { display: flex; }
}

/* ─── Related Tools Section ──────────────────────────────────────────────── */
.related-tools {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  margin-top: var(--space-6);
}

.related-tools h2 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-sec);
  margin-bottom: var(--space-3);
}

.related-tools-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-bg);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.related-link:hover {
  background: var(--color-secondary);
  color: #fff;
  border-color: var(--color-secondary);
  text-decoration: none;
}

/* ─── FAQ Section ────────────────────────────────────────────────────────── */
.faq-section {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.faq-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--space-4) var(--space-6);
  text-align: left;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  transition: background var(--transition-fast);
}
.faq-question:hover { background: var(--color-bg); }
.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: transform var(--transition-med);
}
.faq-question[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 var(--space-6) var(--space-4);
  color: var(--color-text-sec);
  line-height: 1.7;
  font-size: var(--font-size-base);
}
.faq-answer.is-open { display: block; }

/* ─── Bookmark Prompt ────────────────────────────────────────────────────── */
#nec-bookmark-prompt {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 99;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-md);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.bookmark-prompt__dismiss {
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-fast);
  padding: 0;
  line-height: 1;
}
.bookmark-prompt__dismiss:hover { background: rgba(255,255,255,0.35); }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.75);
  padding: var(--space-8) 0 var(--space-6);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

.footer-brand .site-logo {
  color: #fff;
  margin-bottom: var(--space-3);
}
.footer-brand .site-logo:hover { color: rgba(255,255,255,0.8); }

.footer-tagline {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  max-width: 300px;
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: #fff; text-decoration: none; }

.footer-divider {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
  max-width: 600px;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.5);
  white-space: nowrap;
}

/* ─── Misc / Utility ─────────────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-sm { font-size: var(--font-size-sm); }
.text-muted { color: var(--color-text-sec); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

/* ─── 404 Page ───────────────────────────────────────────────────────────── */
.error-page {
  padding: var(--space-12) 0;
  text-align: center;
}

.error-page__code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-page h1 {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.error-page p {
  color: var(--color-text-sec);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
}

/* ─── Print ──────────────────────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .ad-leaderboard, .ad-rectangle,
  .ad-mobile-banner, .btn-actions, #nec-bookmark-prompt { display: none !important; }
  body { background: #fff; }
  .form-panel, .result-panel { box-shadow: none; border: 1px solid #ddd; }
}