/* ==========================================================================
   Grams to Pounds Online — Dedicated Weight Precision Engine
   Bespoke Design Architecture: Dual-Panel Modern Converter
   Clean Nordic Slate, Warm Saffron & Sage Accent System
   100% Unique DOM & CSS Structure (Eliminates all template duplication)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette — Light Mode */
  --site-canvas: #f8fafc;            /* Clean cool slate-tinted canvas */
  --site-surface: #ffffff;           /* Card surface */
  --site-surface-alt: #f1f5f9;       /* Secondary neutral */
  --site-border: #e2e8f0;            /* Crisp hairline border */
  --site-border-active: #0ea5e9;

  /* Brand Colors: Deep Marine Slate & Energetic Saffron Amber */
  --brand-navy: #0f172a;             /* Deep authoritative slate */
  --brand-navy-light: #1e293b;
  --brand-accent: #0284c7;           /* Vibrant sky blue */
  --brand-accent-soft: #e0f2fe;
  
  --highlight-amber: #d97706;        /* Warm culinary amber */
  --highlight-amber-soft: #fef3c7;
  --highlight-amber-border: #fde68a;

  --badge-mint: #059669;             /* Fresh pediatric mint */
  --badge-mint-soft: #ecfdf5;
  --badge-mint-border: #a7f3d0;

  --badge-rose: #e11d48;             /* Baby weight milestone rose */
  --badge-rose-soft: #fff1f2;
  --badge-rose-border: #fecdd3;

  /* Typography */
  --text-main: #0f172a;
  --text-body: #475569;
  --text-muted: #64748b;
  --text-faint: #94a3b8;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevations */
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 12px 28px -4px rgba(15, 23, 42, 0.1), 0 4px 10px -2px rgba(15, 23, 42, 0.06);

  --radius-panel: 16px;
  --radius-box: 10px;
  --radius-pill: 9999px;

  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --site-canvas: #090d16;
  --site-surface: #0f172a;
  --site-surface-alt: #1e293b;
  --site-border: #1e293b;
  --site-border-active: #38bdf8;

  --brand-navy: #f8fafc;
  --brand-navy-light: #e2e8f0;
  --brand-accent: #38bdf8;
  --brand-accent-soft: rgba(56, 189, 248, 0.12);

  --highlight-amber: #fbbf24;
  --highlight-amber-soft: rgba(251, 191, 36, 0.12);
  --highlight-amber-border: rgba(251, 191, 36, 0.25);

  --badge-mint: #34d399;
  --badge-mint-soft: rgba(52, 211, 153, 0.12);
  --badge-mint-border: rgba(52, 211, 153, 0.25);

  --badge-rose: #fb7185;
  --badge-rose-soft: rgba(251, 113, 133, 0.12);
  --badge-rose-border: rgba(251, 113, 133, 0.25);

  --text-main: #f8fafc;
  --text-body: #94a3b8;
  --text-muted: #64748b;
  --text-faint: #475569;

  --shadow-card: 0 4px 24px -2px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 12px 32px -4px rgba(0, 0, 0, 0.7);
}

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

html {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--site-canvas);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--site-canvas);
  color: var(--text-main);
}

.shell-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
  width: 100%;
}

/* ==========================================================================
   Header & Brand Navigation
   ========================================================================== */
.top-navbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--site-border);
  transition: all var(--transition-smooth);
}

[data-theme="dark"] .top-navbar {
  background-color: rgba(15, 23, 42, 0.9);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-mark {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-main);
}

.mark-symbol {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-box);
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
  flex-shrink: 0;
}

.mark-text-group {
  display: flex;
  flex-direction: column;
}

.mark-text-group .brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.18rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.mark-text-group .brand-tagline {
  font-size: 0.72rem;
  color: var(--brand-accent);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-menu-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.menu-item-link {
  color: var(--text-body);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

.menu-item-link:hover {
  color: var(--brand-accent);
}

.theme-toggle-btn {
  background: var(--site-surface-alt);
  border: 1px solid var(--site-border);
  color: var(--text-body);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-box);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--brand-accent);
  color: var(--brand-accent);
}

/* ==========================================================================
   Hero Intro Header
   ========================================================================== */
.hero-deck {
  padding: 2.75rem 0 1.5rem;
  text-align: center;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--brand-accent-soft);
  color: var(--brand-accent);
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}

.hero-deck h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.18;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.hero-deck p {
  font-size: 1.1rem;
  color: var(--text-body);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ==========================================================================
   NEW BESPOKE COMPONENT: DUAL-PANEL PRECISION CONVERTER DASHBOARD
   Left Panel: Input & Controls | Right Panel: Output & Multidimensional Breakdown
   ========================================================================== */
.converter-dashboard {
  margin: 1.5rem 0 4rem;
}

.dashboard-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

/* Mode Bar */
.dashboard-mode-bar {
  display: flex;
  background: var(--site-surface-alt);
  padding: 6px;
  border-bottom: 1px solid var(--site-border);
  gap: 6px;
}

.mode-pill-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-box);
  border: none;
  background: transparent;
  color: var(--text-body);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.mode-pill-btn:hover {
  color: var(--text-main);
}

.mode-pill-btn.active {
  background: var(--site-surface);
  color: var(--brand-accent);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

/* Dual Column Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  min-height: 420px;
}

/* Left Column: Input Stage */
.stage-input-column {
  padding: 2.25rem 2rem;
  border-right: 1px solid var(--site-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stage-header-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.stage-input-group {
  margin-bottom: 1.5rem;
}

.stage-input-box {
  position: relative;
  display: flex;
  align-items: center;
}

.stage-input-field {
  width: 100%;
  height: 64px;
  background: var(--site-surface);
  border: 2px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 0 5.5rem 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  outline: none;
  transition: all var(--transition-fast);
}

.stage-input-field:focus {
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 4px var(--brand-accent-soft);
}

.stage-input-unit-badge {
  position: absolute;
  right: 1rem;
  background: var(--site-surface-alt);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-box);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-body);
  pointer-events: none;
}

/* Action Button Row: Clean, Human, Differentiated */
.stage-button-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn-action-primary {
  flex: 1;
  height: 48px;
  background: var(--brand-navy);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-box);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.2);
}

[data-theme="dark"] .btn-action-primary {
  background: var(--brand-accent);
  color: #0f172a;
}

.btn-action-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.3);
}

.btn-action-secondary {
  height: 48px;
  padding: 0 1.25rem;
  background: var(--site-surface-alt);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-action-secondary:hover {
  background: var(--site-border);
  color: var(--text-main);
}

.btn-action-icon {
  width: 48px;
  height: 48px;
  background: var(--site-surface-alt);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  color: var(--text-body);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-action-icon:hover {
  border-color: var(--brand-accent);
  color: var(--brand-accent);
}

/* Scrub Range Bar */
.stage-scrub-bar {
  background: var(--site-surface-alt);
  padding: 1rem 1.15rem;
  border-radius: var(--radius-box);
  margin-bottom: 1.25rem;
}

.scrub-info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.scrub-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  background: var(--site-border);
  border-radius: 3px;
  outline: none;
}

.scrub-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #0284c7;
  cursor: pointer;
  border: 2.5px solid #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.scrub-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Preset Chips */
.stage-chips-wrap {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.chip-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-right: 0.25rem;
}

.val-chip {
  background: var(--site-surface-alt);
  border: 1px solid var(--site-border);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-body);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.val-chip:hover {
  border-color: var(--brand-accent);
  color: var(--brand-accent);
  background: var(--site-surface);
}

.val-chip.pinned {
  background: var(--brand-accent-soft);
  border-color: #bae6fd;
  color: #0369a1;
  font-weight: 700;
}

/* Right Column: Output & Breakdown Stage */
.stage-output-column {
  padding: 2.25rem 2rem;
  background: var(--site-surface-alt);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

[data-theme="dark"] .stage-output-column {
  background: #111a2e;
}

.output-hero-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-card);
}

.output-hero-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.output-display-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--brand-accent);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.output-secondary-note {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-body);
  margin-top: 0.5rem;
}

/* Multidimensional Output Breakdown Grid */
.breakdown-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.breakdown-cell {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 0.9rem;
}

.breakdown-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.breakdown-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
}

/* Live Math Box */
.formula-live-strip {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 0.9rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.formula-live-strip strong {
  color: var(--brand-accent);
}

/* Baby Weight Specific Stage */
.baby-status-callout {
  background: var(--badge-mint-soft);
  border: 1.5px solid var(--badge-mint-border);
  border-radius: var(--radius-box);
  padding: 1.15rem;
  margin-top: 1rem;
}

.baby-status-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--badge-mint);
  margin-bottom: 0.35rem;
}

.baby-status-body {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* ==========================================================================
   Formula Walkthrough Section
   ========================================================================== */
.formula-walkthrough-section {
  margin: 4.5rem 0;
}

.formula-card-wrap {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-panel);
  padding: 2.25rem;
  box-shadow: var(--shadow-card);
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-accent);
  margin-bottom: 0.5rem;
}

.formula-card-wrap h2 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.formula-cards-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.formula-panel-item {
  background: var(--site-surface-alt);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 1.35rem;
}

.formula-panel-item .eq {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-accent);
  margin: 0.5rem 0;
}

/* ==========================================================================
   Reference Table Section
   ========================================================================== */
.reference-vault-section {
  margin: 4.5rem 0;
}

.vault-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.vault-header-row h2 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
}

.btn-vault-export {
  background: var(--brand-navy);
  color: #ffffff;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-box);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

[data-theme="dark"] .btn-vault-export {
  background: var(--brand-accent);
  color: #0f172a;
}

.table-glass-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-panel);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.vault-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.vault-table th {
  background: var(--site-surface-alt);
  padding: 1rem 1.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--site-border);
}

.vault-table td {
  padding: 1rem 1.5rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--site-border);
  color: var(--text-main);
}

.vault-table tr:last-child td {
  border-bottom: none;
}

.vault-table tr:hover td {
  background: var(--site-surface-alt);
}

.vault-table tr.highlighted td {
  background: var(--brand-accent-soft);
  font-weight: 700;
}

.mono-cell {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* ==========================================================================
   Editorial Content / Guide
   ========================================================================== */
.editorial-section {
  margin: 4.5rem 0;
  max-width: 840px;
}

.editorial-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-body);
}

.editorial-body h2 {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 2.5rem 0 1rem;
}

.editorial-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.85rem 0 0.75rem;
}

.editorial-body p {
  margin-bottom: 1.35rem;
}

.editorial-body ul, .editorial-body ol {
  margin: 0 0 1.5rem 1.75rem;
}

.editorial-body li {
  margin-bottom: 0.6rem;
}

.editorial-body strong {
  color: var(--text-main);
}

/* ==========================================================================
   Programmatic Conversion Grid
   ========================================================================== */
.programmatic-vault-section {
  margin: 4.5rem 0;
}

.programmatic-vault-section h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.grid-conversion-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.conv-metric-card {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 1.15rem 1.25rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-card);
}

.conv-metric-card:hover {
  border-color: var(--brand-accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.conv-metric-card .title {
  font-size: 0.95rem;
  font-weight: 700;
}

.conv-metric-card .val {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-accent);
}

.conv-metric-card .sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-vault-section {
  margin: 4.5rem 0 5.5rem;
}

.faq-header-center {
  text-align: center;
  margin-bottom: 2.25rem;
}

.faq-header-center h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.faq-deck-stack {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-width: 860px;
  margin: 0 auto;
}

.faq-deck-item {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-box);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.faq-deck-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  color: var(--text-main);
  cursor: pointer;
  font-family: inherit;
}

.faq-deck-toggle svg {
  transition: transform var(--transition-fast);
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-deck-item.open .faq-deck-toggle svg {
  transform: rotate(180deg);
  color: var(--brand-accent);
}

.faq-deck-body {
  display: none;
  padding: 0 1.5rem 1.5rem;
  color: var(--text-body);
  font-size: 0.98rem;
  line-height: 1.7;
}

.faq-deck-item.open .faq-deck-body {
  display: block;
}

/* ==========================================================================
   Static Pages Layout
   ========================================================================== */
.static-page-frame {
  max-width: 800px;
  margin: 3rem auto 5rem;
  padding: 0 1.25rem;
}

.static-page-title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.static-page-date {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
}

.static-contact-box {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: var(--radius-panel);
  padding: 2rem;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-card);
}

.field-block {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field-block label {
  font-size: 0.9rem;
  font-weight: 700;
}

.field-block input, .field-block textarea {
  background: var(--site-canvas);
  border: 1.5px solid var(--site-border);
  border-radius: var(--radius-box);
  padding: 0.75rem 1rem;
  font-size: 0.98rem;
  color: var(--text-main);
  outline: none;
  font-family: inherit;
}

.field-block input:focus, .field-block textarea:focus {
  border-color: var(--brand-accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-master-footer {
  margin-top: auto;
  background: var(--site-surface);
  border-top: 1px solid var(--site-border);
  padding: 3.5rem 0 2rem;
  font-size: 0.92rem;
  color: var(--text-body);
}

.footer-quad-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-column-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.footer-anchor-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-anchor-list a {
  color: var(--text-body);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-anchor-list a:hover {
  color: var(--brand-accent);
}

.footer-copyright-bar {
  border-top: 1px solid var(--site-border);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 840px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .stage-input-column {
    border-right: none;
    border-bottom: 1px solid var(--site-border);
    padding: 1.75rem 1.25rem;
  }
  .stage-output-column {
    padding: 1.75rem 1.25rem;
  }
  .formula-cards-duo, .footer-quad-grid {
    grid-template-columns: 1fr;
  }
  .nav-menu-links {
    display: none;
  }
}

/* Print Clean */
@media print {
  .top-navbar, .site-master-footer, .stage-button-row, .btn-vault-export, .faq-vault-section {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
}