/**
 * InstaCalc Core Design System (v2.0)
 * Modern, Clean, Mobile-First UI Components
 */

:root {
  /* Surface & Backgrounds */
  --ic-bg: #f8fafc;
  --ic-bg-subtle: #f1f5f9;
  --ic-card-bg: #ffffff;
  --ic-card-glass: rgba(255, 255, 255, 0.9);
  
  /* Text & Contrast */
  --ic-text: #0f172a;
  --ic-text-muted: #475569;
  --ic-text-light: #94a3b8;
  
  /* Brand Palette */
  --ic-primary: #0284c7;        /* Sky-600 */
  --ic-primary-dark: #0369a1;   /* Sky-700 */
  --ic-primary-light: #e0f2fe;  /* Sky-100 */
  --ic-accent: #0d9488;         /* Teal-600 */
  --ic-accent-light: #ccfbf1;   /* Teal-100 */
  --ic-accent-warn: #f59e0b;    /* Amber-500 */
  --ic-success: #10b981;        /* Emerald-500 */
  --ic-success-light: #d1fae5;
  
  /* Borders & Shadows */
  --ic-border: #e2e8f0;
  --ic-border-focus: #38bdf8;
  --ic-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --ic-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --ic-shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --ic-shadow-xl: 0 20px 35px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  
  /* Radii */
  --ic-radius-sm: 8px;
  --ic-radius-md: 12px;
  --ic-radius-lg: 18px;
  --ic-radius-full: 9999px;
  
  /* Typography */
  --ic-font-sans: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ic-font-heading: "Sora", var(--ic-font-sans);
}

/* 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 {
  min-height: 100vh;
  font-family: var(--ic-font-sans);
  color: var(--ic-text);
  background-color: var(--ic-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font: inherit;
}

/* Layout Utilities */
.container {
  width: min(1240px, 92vw);
  margin: 0 auto;
}

.section {
  padding: 3rem 0;
}

@media (max-width: 768px) {
  .section {
    padding: 2rem 0;
  }
}

/* Accessible Screen Reader Only */

/* Utility Classes */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ic-border);
  transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
  box-shadow: var(--ic-shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--ic-font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ic-text);
  letter-spacing: -0.02em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: var(--ic-radius-md);
  border: 1.5px solid var(--ic-border);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border-radius: var(--ic-radius-md);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ic-text-muted);
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--ic-primary-dark);
  background: var(--ic-primary-light);
}

/* Mobile Menu Toggle Button */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--ic-radius-md);
  border: 1px solid var(--ic-border);
  background: #ffffff;
  color: var(--ic-text);
  cursor: pointer;
  padding: 0;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

@media (max-width: 840px) {
  .menu-toggle {
    display: inline-flex;
  }
  
  .site-nav {
    position: fixed;
    top: 69px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--ic-border);
    box-shadow: var(--ic-shadow-xl);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.5rem;
    gap: 0.4rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease, visibility 0.25s;
  }
  
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    padding: 0.8rem 1rem;
    font-size: 1rem;
    border-radius: var(--ic-radius-md);
    background: var(--ic-bg);
  }
}

/* ==========================================================================
   Hero & Page Headers
   ========================================================================== */
.hero {
  padding: 2.5rem 0 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--ic-radius-full);
  background: var(--ic-primary-light);
  color: var(--ic-primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-family: var(--ic-font-heading);
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ic-text);
  margin-bottom: 0.85rem;
}

.hero-desc {
  font-size: clamp(0.98rem, 1.8vw, 1.12rem);
  color: var(--ic-text-muted);
  max-width: 68ch;
  line-height: 1.6;
}

/* ==========================================================================
   Calculator 2-Column Grid Layout (Desktop) / 1-Column (Mobile)
   ========================================================================== */
.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 2rem;
  align-items: start;
  width: 100%;
  margin-top: 1.25rem;
}

@media (min-width: 1400px) {
  .calc-layout {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 2.25rem;
  }
}

@media (max-width: 960px) {
  .calc-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Cards & Surfaces */
.ic-card {
  background: var(--ic-card-bg);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--ic-shadow-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

@media (max-width: 640px) {
  .ic-card {
    padding: 1.15rem;
    border-radius: var(--ic-radius-md);
  }
}

.ic-card-sticky {
  position: sticky;
  top: 88px;
}

/* Live Mobile Sticky Output Banner */
.mobile-summary-pill {
  display: none;
  background: linear-gradient(135deg, var(--ic-primary-dark), var(--ic-primary));
  color: #ffffff;
  border-radius: var(--ic-radius-md);
  padding: 0.85rem 1.1rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--ic-shadow-md);
}

@media (max-width: 960px) {
  .mobile-summary-pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
  }
  
  .mobile-summary-pill .metric-label {
    font-size: 0.82rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  
  .mobile-summary-pill .metric-val {
    font-family: var(--ic-font-heading);
    font-size: 1.35rem;
    font-weight: 800;
  }
}

/* ==========================================================================
   Form Controls, Sliders & Chips
   ========================================================================== */
.form-group {
  margin-bottom: 1.35rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  gap: 0.5rem;
}

.form-label {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ic-text);
}

.form-hint {
  font-size: 0.82rem;
  color: var(--ic-text-light);
}

/* Input Fields */
.input-with-adornment {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix, .input-suffix {
  position: absolute;
  color: var(--ic-text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  pointer-events: none;
}

.input-prefix {
  left: 1rem;
}

.input-suffix {
  right: 1rem;
}

.ic-input {
  width: 100%;
  height: 48px;
  padding: 0.65rem 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ic-text);
  background: #ffffff;
  border: 1.5px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  outline: none;
  transition: all 0.2s ease;
}

.ic-input:focus {
  border-color: var(--ic-primary);
  box-shadow: 0 0 0 3.5px var(--ic-primary-light);
}

.has-prefix {
  padding-left: 2.25rem;
}

.has-suffix {
  padding-right: 2.5rem;
}

/* Range Sliders & Inputs */
.slider-wrap {
  margin-top: 0.65rem;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr 130px;
  gap: 0.85rem;
  align-items: center;
}

@media (max-width: 520px) {
  .range-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

input[type="range"], input[type="range"].ic-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--ic-border);
  outline: none;
  cursor: pointer;
  margin: 0.6rem 0;
  touch-action: pan-y;
}

input[type="range"]::-webkit-slider-thumb,
input[type="range"].ic-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--ic-primary);
  border: 3px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover,
input[type="range"]::-webkit-slider-thumb:active,
input[type="range"].ic-range::-webkit-slider-thumb:hover,
input[type="range"].ic-range::-webkit-slider-thumb:active {
  transform: scale(1.18);
  background: var(--ic-primary-dark);
}

input[type="range"]::-moz-range-thumb,
input[type="range"].ic-range::-moz-range-thumb {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--ic-primary);
  border: 3px solid #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  cursor: pointer;
}

/* Touch Number Fields and Selects */
.field-card input[type="number"],
.field-card input[type="text"],
.field-card input[type="date"],
.field-card select {
  width: 100%;
  height: 48px;
  padding: 0.65rem 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ic-text);
  background: #ffffff;
  border: 1.5px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  outline: none;
  transition: all 0.2s ease;
}

.field-card input[type="number"]:focus,
.field-card input[type="text"]:focus,
.field-card input[type="date"]:focus,
.field-card select:focus {
  border-color: var(--ic-primary);
  box-shadow: 0 0 0 3.5px var(--ic-primary-light);
}

/* Quick Preset Chips */
.chips-wrap, .quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.6rem;
}

.ic-chip, .chip, .chip-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.85rem;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--ic-text-muted);
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 34px;
}

.ic-chip:hover, .chip:hover, .chip-btn:hover,
.ic-chip.active, .chip.active, .chip-btn.active {
  color: var(--ic-primary-dark);
  background: var(--ic-primary-light);
  border-color: var(--ic-primary);
}

/* Toggle Group & Switch Pills */
.toggle-group, .switch-pill {
  display: inline-flex;
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 0.25rem;
  gap: 0.25rem;
}

.toggle-btn, .switch-opt {
  padding: 0.45rem 0.95rem;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: var(--ic-radius-sm);
  border: none;
  background: transparent;
  color: var(--ic-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 38px;
}

.toggle-btn.active, .switch-opt.active {
  background: #ffffff;
  color: var(--ic-primary-dark);
  box-shadow: var(--ic-shadow-sm);
}

/* Action Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.ic-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.65rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--ic-radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ic-btn-primary {
  background: linear-gradient(135deg, var(--ic-primary-dark), var(--ic-primary));
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.ic-btn-primary:hover {
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
}

.ic-btn-outline {
  background: #ffffff;
  color: var(--ic-text-muted);
  border: 1.5px solid var(--ic-border);
}

.ic-btn-outline:hover {
  background: var(--ic-bg-subtle);
  color: var(--ic-text);
  border-color: var(--ic-text-light);
}

/* ==========================================================================
   Results & Metrics Display
   ========================================================================== */
.results-hero {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #ffffff;
  border-radius: var(--ic-radius-md);
  padding: 1.35rem;
  margin-bottom: 1.25rem;
}

.results-hero-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8;
  font-weight: 600;
}

.results-hero-value {
  font-family: var(--ic-font-heading);
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  margin: 0.25rem 0 0.4rem;
}

.results-hero-sub {
  font-size: 0.88rem;
  color: #cbd5e1;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.metric-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 0.9rem;
}

.metric-card-label {
  font-size: 0.8rem;
  color: var(--ic-text-muted);
  font-weight: 600;
}

.metric-card-val {
  font-family: var(--ic-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ic-text);
  margin-top: 0.2rem;
}

.chart-container {
  position: relative;
  width: 100%;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0;
}

/* ==========================================================================
   Responsive Tables
   ========================================================================== */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  background: #ffffff;
  margin-top: 1rem;
}

.ic-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.ic-table th {
  background: var(--ic-bg-subtle);
  color: var(--ic-text-muted);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--ic-border);
  white-space: nowrap;
}

.ic-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--ic-border);
  color: var(--ic-text);
  white-space: nowrap;
}

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

.ic-table tbody tr:hover {
  background: rgba(2, 132, 199, 0.03);
}

/* ==========================================================================
   FAQ & Content Cards
   ========================================================================== */
.faq-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.ic-faq-item {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.ic-faq-item[open] {
  border-color: var(--ic-primary);
  box-shadow: var(--ic-shadow-sm);
}

.ic-faq-summary {
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ic-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ic-faq-summary::-webkit-details-marker {
  display: none;
}

.ic-faq-summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ic-primary);
  margin-left: 0.5rem;
  transition: transform 0.2s ease;
}

.ic-faq-item[open] .ic-faq-summary::after {
  content: "-";
  font-size: 1.5rem;
}

.ic-faq-body {
  padding: 0 1.25rem 1.15rem;
  color: var(--ic-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  margin-top: 3.5rem;
  background: #ffffff;
  border-top: 1px solid var(--ic-border);
  padding: 2.5rem 0 2rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.footer-brand {
  font-family: var(--ic-font-heading);
  font-weight: 700;
  color: var(--ic-text);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ic-text-muted);
}

.footer-links a:hover {
  color: var(--ic-primary-dark);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-copy {
  width: 100%;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ic-text-light);
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--ic-border);
}

/* ==========================================================================
   Comprehensive Page & Component Styles for All InstaCalc Tools
   ========================================================================== */

/* Section Headers & Eyebrows */
.section-head {
  max-width: 760px;
  margin-bottom: 1.5rem;
}

.section-head h2 {
  font-family: var(--ic-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ic-text);
  margin: 0.4rem 0 0.6rem;
}

.section-head p {
  color: var(--ic-text-muted);
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--ic-radius-full);
  background: var(--ic-primary-light);
  color: var(--ic-primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero Section Components */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 360px);
  gap: 2rem;
  align-items: stretch;
}

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.hero-copy {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--ic-shadow-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-copy h1 {
  font-family: var(--ic-font-heading);
  font-size: clamp(1.75rem, 3.8vw, 2.65rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--ic-text);
  margin-top: 0.75rem;
}

.hero-copy p {
  margin-top: 0.75rem;
  color: var(--ic-text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--ic-radius-full);
  background: var(--ic-primary-light);
  color: var(--ic-primary-dark);
  font-size: 0.84rem;
  font-weight: 700;
  width: fit-content;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.hero-badges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--ic-border);
}

.badge-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 0.75rem 0.9rem;
}

.badge-card strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ic-text);
}

.badge-card span {
  font-size: 0.8rem;
  color: var(--ic-text-muted);
}

.hero-panel {
  background: linear-gradient(145deg, #0f172a, #1e293b);
  color: #ffffff;
  border-radius: var(--ic-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--ic-shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-panel h2 {
  font-family: var(--ic-font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.quick-links {
  display: grid;
  gap: 0.5rem;
}

.quick-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--ic-radius-md);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.quick-link:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateX(3px);
}

.hero-point {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.65rem 0.85rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--ic-radius-md);
  font-size: 0.92rem;
  color: #f1f5f9;
  margin-bottom: 0.5rem;
}

.hero-points {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--ic-radius-full);
  background: var(--ic-bg-subtle);
  color: var(--ic-text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 1rem;
}

/* Button Variants */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.65rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--ic-radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--ic-primary-dark), var(--ic-primary));
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  background: #ffffff;
  color: var(--ic-text) !important;
  border: 1.5px solid var(--ic-border);
}

.btn-ghost:hover {
  background: var(--ic-bg-subtle);
  border-color: var(--ic-text-light);
  transform: translateY(-1px);
}

.btn-sm {
  min-height: 38px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
}

.submit-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--ic-primary-dark), var(--ic-primary));
  color: #ffffff;
  font-weight: 700;
  border-radius: var(--ic-radius-md);
  min-height: 48px;
  border: none;
  cursor: pointer;
  box-shadow: var(--ic-shadow-md);
}

.back-to-top, .top-btn {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: var(--ic-radius-md);
  background: linear-gradient(135deg, var(--ic-primary-dark), var(--ic-primary));
  color: #ffffff;
  border: none;
  box-shadow: var(--ic-shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 90;
}

.back-to-top.show, .top-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Smart Unit Converter Shell & Instant Results */
.converter-shell {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-lg);
  padding: 1.75rem;
  box-shadow: var(--ic-shadow-md);
}

.converter-search-zone {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.converter-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.converter-input-wrap .input-icon {
  position: absolute;
  left: 1.25rem;
  color: var(--ic-primary);
  font-size: 1.15rem;
  pointer-events: none;
}

.converter-input-wrap input {
  width: 100%;
  height: 56px;
  padding: 0.75rem 3rem 0.75rem 3.25rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ic-text);
  background: var(--ic-bg-subtle);
  border: 2px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  outline: none;
  transition: all 0.2s ease;
}

.converter-input-wrap input:focus {
  background: #ffffff;
  border-color: var(--ic-primary);
  box-shadow: 0 0 0 4px var(--ic-primary-light);
}

.converter-input-wrap button {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  color: var(--ic-text-light);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0.25rem;
}

.converter-input-wrap button:hover {
  color: var(--ic-text);
}

.suggestions-container {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  box-shadow: var(--ic-shadow-xl);
  max-height: 280px;
  overflow-y: auto;
  z-index: 60;
}

.suggestion-item {
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--ic-text);
  border-bottom: 1px solid var(--ic-border);
  transition: background 0.15s;
}

.suggestion-item:last-child {
  border-bottom: none;
}

.suggestion-item:hover, .suggestion-item.active {
  background: var(--ic-primary-light);
  color: var(--ic-primary-dark);
}

.results-container {
  margin-top: 1.5rem;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.helper-text {
  text-align: center;
  color: var(--ic-text-muted);
  font-size: 1rem;
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.helper-text i {
  font-size: 2rem;
  color: var(--ic-text-light);
}

.result-item {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.result-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ic-text-muted);
}

.result-icon {
  color: var(--ic-primary);
}

.result-source {
  font-size: 0.92rem;
  color: var(--ic-text-muted);
}

.result-value {
  font-family: var(--ic-font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ic-primary-dark);
}

.converter-foot {
  text-align: center;
  margin-top: 1.25rem;
}

.toggle-categories-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  color: var(--ic-primary);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: var(--ic-radius-sm);
}

.toggle-categories-btn:hover {
  background: var(--ic-primary-light);
}

.categories-wrap {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ic-border);
}

.category-grid, .grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.85rem;
}

.category-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1rem;
  font-weight: 600;
  color: var(--ic-text);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.category-card:hover {
  background: #ffffff;
  border-color: var(--ic-primary);
  color: var(--ic-primary-dark);
  box-shadow: var(--ic-shadow-sm);
  transform: translateY(-1px);
}

/* Tool Library by Category */
.tool-groups {
  display: grid;
  gap: 1.25rem;
}

.tool-group {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  overflow: hidden;
  box-shadow: var(--ic-shadow-sm);
}

.tool-group summary {
  padding: 1.15rem 1.35rem;
  font-family: var(--ic-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ic-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--ic-bg-subtle);
  border-bottom: 1px solid transparent;
  transition: all 0.2s ease;
}

.tool-group[open] summary {
  border-bottom-color: var(--ic-border);
}

.tool-group summary::-webkit-details-marker {
  display: none;
}

.tool-group summary i {
  color: var(--ic-primary);
  transition: transform 0.2s ease;
}

.tool-group[open] summary i {
  transform: rotate(180deg);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
  padding: 1.25rem;
}

.tool-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ic-text);
  transition: all 0.2s ease;
}

.tool-card:hover {
  background: #ffffff;
  border-color: var(--ic-primary);
  color: var(--ic-primary-dark);
  box-shadow: var(--ic-shadow-sm);
  transform: translateY(-1px);
}

.tool-card i {
  color: var(--ic-text-light);
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}

.tool-card:hover i {
  color: var(--ic-primary);
  transform: translateX(3px);
}

/* Info Cards (Why Choose Us) */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.info-card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.5rem;
  box-shadow: var(--ic-shadow-sm);
}

.info-card h3 {
  font-family: var(--ic-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ic-text);
  margin-bottom: 0.5rem;
}

.info-card p {
  color: var(--ic-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Calculator Form Cards & Result Layouts */
.calculator-shell, .shell, .card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--ic-shadow-md);
}

@media (max-width: 640px) {
  .calculator-shell, .shell, .card {
    padding: 1.15rem;
  }
}

.field-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
}

.field-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.field-head label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ic-text);
}

.field-head span {
  font-size: 0.82rem;
  color: var(--ic-text-muted);
}

.field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.input-grid {
  display: grid;
  gap: 0.85rem;
}

.inline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.85rem;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.result-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-card h3 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ic-text-muted);
  margin-bottom: 0.35rem;
}

.result-card .result-value, .result-card strong {
  font-family: var(--ic-font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ic-text);
  word-break: break-word;
}

.result-card.positive {
  background: var(--ic-success-light);
  border-color: #a7f3d0;
}

.result-card.positive strong {
  color: #065f46;
}

.summary-card, .summary {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #ffffff;
  border-radius: var(--ic-radius-md);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.summary-card span, .summary small {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8;
  font-weight: 600;
  display: block;
}

.summary-card strong, .summary strong {
  font-family: var(--ic-font-heading);
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  font-weight: 800;
  color: #ffffff;
  display: block;
  margin: 0.25rem 0;
}

.summary-card small, .summary span {
  font-size: 0.88rem;
  color: #cbd5e1;
}

.goal-status {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.goal-meta {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--ic-text);
  margin-bottom: 0.5rem;
}

.goal-progress {
  height: 10px;
  border-radius: var(--ic-radius-full);
  background: var(--ic-border);
  overflow: hidden;
}

.goal-progress-bar {
  height: 100%;
  border-radius: var(--ic-radius-full);
  background: linear-gradient(90deg, var(--ic-primary), var(--ic-success));
  transition: width 0.3s ease;
}

.mode-switch {
  display: inline-flex;
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 0.25rem;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.mode-switch a, .mode-btn {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--ic-radius-sm);
  border: none;
  background: transparent;
  color: var(--ic-text-muted);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.mode-switch a.active, .mode-btn.active {
  background: #ffffff;
  color: var(--ic-primary-dark);
  box-shadow: var(--ic-shadow-sm);
}

.actions, .calculator-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

/* Charts & Schedule Tables */
.chart-card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.chart-card h3 {
  font-family: var(--ic-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ic-text);
  margin-bottom: 0.75rem;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.chart-wrap {
  position: relative;
  width: 100%;
  min-height: 250px;
}

.chart-wrap.small {
  min-height: 200px;
}

.table-tools, .table-head-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.table-shell {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  background: #ffffff;
}

.table-shell table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  min-width: 580px;
}

.table-shell th {
  background: var(--ic-bg-subtle);
  color: var(--ic-text-muted);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--ic-border);
  position: sticky;
  top: 0;
}

.table-shell td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--ic-border);
  color: var(--ic-text);
}

.table-shell tbody tr:nth-child(even) {
  background: var(--ic-bg-subtle);
}

/* Feature & Content Cards */
.feature-card, .content-card, .faq-card, .sidebar-card, .panel, .story-card, .value-card, .policy-card, .intro-card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.25rem;
  box-shadow: var(--ic-shadow-sm);
  margin-bottom: 1rem;
}

.feature-card h3, .content-card h3, .sidebar-card h3, .panel h3, .story-card h3, .policy-card h2, .policy-card h3 {
  font-family: var(--ic-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ic-text);
  margin-bottom: 0.5rem;
}

.feature-card p, .content-card p, .sidebar-card p, .panel p, .story-card p, .policy-card p, .intro-card p {
  color: var(--ic-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.feature-list, .link-list, .side-list, .check-list, .policy-list {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.feature-list li, .side-list li, .check-list li, .policy-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--ic-text-muted);
  font-size: 0.92rem;
}

.feature-list i, .check-list i, .policy-list i {
  color: var(--ic-primary);
  margin-top: 0.2rem;
}

.link-list a, .side-list a, .contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-sm);
  color: var(--ic-text);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.link-list a:hover, .side-list a:hover, .contact-link:hover {
  background: #ffffff;
  border-color: var(--ic-primary);
  color: var(--ic-primary-dark);
}

.faq-list, .faqs {
  display: grid;
  gap: 0.75rem;
}

.faq-card, .faq {
  overflow: hidden;
  padding: 0;
}

.faq-card summary, .faq summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ic-text);
  background: var(--ic-bg-subtle);
}

.faq-card summary::-webkit-details-marker, .faq summary::-webkit-details-marker {
  display: none;
}

.faq-card p, .faq p {
  padding: 1rem 1.25rem;
  color: var(--ic-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.stat-card {
  background: var(--ic-bg-subtle);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 0.85rem;
}

.stat-card strong {
  display: block;
  font-family: var(--ic-font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ic-primary-dark);
}

.stat-card span {
  font-size: 0.82rem;
  color: var(--ic-text-muted);
}

.value-card {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.value-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--ic-radius-md);
  background: var(--ic-primary-light);
  color: var(--ic-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.value-card h4 {
  font-family: var(--ic-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ic-text);
  margin-bottom: 0.25rem;
}

.member-card {
  text-align: center;
  padding: 1.5rem;
}

.member-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  border: 3px solid var(--ic-primary-light);
  object-fit: cover;
}

.policy-section {
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--ic-border);
}

.policy-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.toc-card {
  position: sticky;
  top: 90px;
}

.empty {
  color: var(--ic-text-light);
  font-style: italic;
  font-size: 0.92rem;
}

.menu-open-icon, .menu-close-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.form-card, .contact-card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.5rem;
  box-shadow: var(--ic-shadow-sm);
  margin-bottom: 1rem;
}

.stack, .content-stack, .policy-stack {
  display: grid;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.faq-item summary {
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ic-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--ic-bg-subtle);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary i {
  color: var(--ic-primary);
  transition: transform 0.2s ease;
}

.faq-item[open] summary i {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 1rem 1.25rem;
  color: var(--ic-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
}

.lang-switch select {
  height: 38px;
  padding: 0.25rem 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ic-text);
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-sm);
  cursor: pointer;
  outline: none;
}




/* ==========================================================================
   Universal Mobile Viewport Guardrails (320px - 640px)
   ========================================================================== */
@media (max-width: 640px) {
  .calc-layout, .hero-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }

  .calculator-shell {
    padding: 1rem 0.75rem !important;
    border-radius: var(--ic-radius-md) !important;
    max-width: 100% !important;
    overflow: hidden !important;
  }

  .calculator-header-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.5rem !important;
  }

  .toggle-group, .switch-pill {
    display: flex !important;
    width: 100% !important;
  }

  .toggle-group .toggle-btn, .switch-pill .switch-opt {
    flex: 1 !important;
    justify-content: center !important;
    text-align: center !important;
    padding: 0.55rem 0.4rem !important;
    font-size: 0.82rem !important;
  }

  .hero-result-card {
    padding: 1rem 0.85rem !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.5rem !important;
    position: relative !important;
  }

  .hero-result-card .quick-copy-btn {
    position: absolute !important;
    top: 0.75rem !important;
    right: 0.75rem !important;
    width: 38px !important;
    height: 38px !important;
  }

  .hero-result-card .res-val {
    font-size: clamp(1.35rem, 6.5vw, 1.85rem) !important;
    max-width: calc(100% - 44px) !important;
    word-break: break-word !important;
  }

  .range-row {
    grid-template-columns: 1fr !important;
    gap: 0.45rem !important;
  }

  .field-card {
    padding: 0.85rem 0.75rem !important;
    margin-bottom: 0.75rem !important;
  }

  .chips-wrap, .quick-chips {
    gap: 0.35rem !important;
  }

  .chip, .ic-chip, .chip-btn {
    padding: 0.3rem 0.6rem !important;
    font-size: 0.78rem !important;
    min-height: 30px !important;
  }

  .calculator-actions {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 0.4rem !important;
  }

  .calculator-actions .btn:first-child,
  .calculator-actions .btn-primary {
    grid-column: span 2 !important;
  }

  .result-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.5rem !important;
  }

  .result-card {
    padding: 0.75rem 0.65rem !important;
    min-width: 0 !important;
  }

  .result-card h3 {
    font-size: 0.72rem !important;
  }

  .result-value {
    font-size: 1.05rem !important;
    word-break: break-word !important;
  }

  .chart-grid {
    grid-template-columns: 1fr !important;
  }

  .chart-wrap {
    height: 220px !important;
  }

  .table-shell table {
    min-width: 480px !important;
  }
}


/* ==========================================================================
   Fintech Table & Graph System (Modern Projection Table & Studio Grid)
   ========================================================================== */
.table-shell {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  margin-top: 0.75rem;
  background: #ffffff;
}

.table-shell table,
.projection-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.projection-table th {
  padding: 0.85rem 1rem;
  text-align: left;
  color: var(--ic-text-muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--ic-bg-subtle);
  border-bottom: 1px solid var(--ic-border);
}

.projection-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--ic-border);
  color: var(--ic-text);
  font-weight: 600;
}

.projection-table tbody tr:last-child td {
  border-bottom: 0;
}

.projection-table tbody tr:hover {
  background: rgba(2, 132, 199, 0.03);
}

.projection-table .projection-year {
  color: var(--ic-primary-dark);
  font-family: 'Sora', sans-serif;
  font-weight: 800;
}

/* Fintech Studio 2-Column Desktop Grid */
.fin-studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 1.5rem;
  align-items: start;
  margin-top: 1rem;
  width: 100%;
}

.studio-inputs {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
}

.studio-outcome {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  position: sticky;
  top: 6.75rem;
}

.field-preview-badge {
  font-family: 'Sora', sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--ic-primary-dark);
  background: var(--ic-primary-light);
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
}

.outcome-chart-box {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 4px 14px -2px rgba(15, 23, 42, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.chart-wrap-doughnut {
  position: relative;
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.legend-stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  width: 100%;
  padding-top: 0.85rem;
  border-top: 1px solid var(--ic-border);
}

.legend-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.legend-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ic-text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.legend-val {
  font-family: 'Sora', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ic-text);
}

.legend-val.positive {
  color: #10b981;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-invested { background: #0284c7; }
.dot-returns { background: #10b981; }

.growth-timeline-card {
  background: #ffffff;
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius-md);
  padding: 1.5rem;
  margin-top: 2rem;
  box-shadow: 0 4px 14px -2px rgba(15, 23, 42, 0.05);
}

.chart-wrap-timeline {
  position: relative;
  width: 100%;
  height: 280px;
}

@media (max-width: 960px) {
  .fin-studio-grid {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 1.25rem !important;
  }
  .studio-outcome {
    position: static !important;
  }
}

/* Mobile Responsive Table Transformation (<= 640px) */
@media (max-width: 640px) {
  .table-shell {
    overflow: visible !important;
    border: 0 !important;
    background: transparent !important;
    margin-top: 0.5rem !important;
  }

  .table-shell .projection-table,
  .projection-table,
  .projection-table tbody,
  .projection-table tr,
  .projection-table td {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .projection-table thead {
    display: none !important;
  }

  .projection-table tbody {
    display: grid !important;
    gap: 0.75rem !important;
  }

  .projection-table tbody tr {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
    overflow: hidden !important;
    border: 1px solid var(--ic-border) !important;
    border-radius: var(--ic-radius-md) !important;
    background: #ffffff !important;
    box-shadow: var(--ic-shadow-sm) !important;
  }

  .projection-table td {
    min-height: 60px !important;
    padding: 0.75rem 0.85rem !important;
    border: 0 !important;
    border-bottom: 1px solid var(--ic-border) !important;
    font-family: 'Sora', sans-serif !important;
    font-size: 0.92rem !important;
    font-weight: 800 !important;
  }

  .projection-table td:nth-child(odd):not(.projection-year) {
    border-right: 1px solid var(--ic-border) !important;
  }

  .projection-table td:nth-last-child(-n + 2) {
    border-bottom: 0 !important;
  }

  .projection-table .projection-year {
    grid-column: 1 / -1 !important;
    min-height: auto !important;
    padding: 0.7rem 0.85rem !important;
    background: linear-gradient(90deg, var(--ic-primary-light), #ffffff) !important;
    border-right: 0 !important;
    color: var(--ic-primary-dark) !important;
  }

  .projection-table td::before {
    content: attr(data-label) !important;
    display: block !important;
    margin-bottom: 0.25rem !important;
    color: var(--ic-text-muted) !important;
    font-family: 'Public Sans', sans-serif !important;
    font-size: 0.68rem !important;
    font-weight: 800 !important;
    letter-spacing: 0.04em !important;
    text-transform: uppercase !important;
  }

  .projection-table .projection-year::before {
    display: none !important;
  }
}