/* 1. CSS Custom Properties (:root) */
:root[data-theme="it-a"] {
  /* WARIANT A: Corporate Indigo × Cool Slate — IT i Technologie 2026 */
  --primary:       #4F46E5;
  --primary-dark:  #4338CA;
  --primary-light: #E0E7FF;
  --secondary:     #3730A3;
  --accent:        #06B6D4;
  --accent-light:  #CFFAFE;
  --success:       #10b981;
  --success-light: #d1fae5;
  --danger:        #ef4444;
  --danger-light:  #fee2e2;
  --warning:       #f59e0b;
  --warning-light: #fef3c7;

  /* Elevated Neutrals — chłodne indigo — klasyczne tech neutrals */
  --gray-50:       #F6F6FE;
  --gray-100:      #EDEDFA;
  --gray-200:      #DBDBF2;
  --gray-300:      #B5B5E0;
  --gray-400:      #8F8FC8;
  --gray-500:      #6B6BAA;
  --gray-600:      #515190;
  --gray-700:      #3B3B72;
  --gray-800:      #28285A;
  --gray-900:      #191944;

  --shadow-sm:     0 1px 2px   rgba(79, 70, 229, .08);
  --shadow-md:     0 4px 12px  rgba(79, 70, 229, .12);
  --shadow-lg:     0 8px 24px  rgba(79, 70, 229, .16);
  --shadow-xl:     0 16px 48px rgba(79, 70, 229, .20);

  --radius-sm:     4px;
  --radius-md:     8px;
  --radius-lg:     12px;
  --radius-xl:     16px;
  --max-width:     1200px;
  --transition:    all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
input, button, textarea, select {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--primary-dark);
}
ul, ol {
  list-style: none;
}
blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--primary);
  background: var(--gray-100);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--gray-700);
}
blockquote cite {
  display: block;
  margin-top: 0.5rem;
  font-style: normal;
  font-weight: 600;
  color: var(--gray-900);
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}
th {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}
tr:last-child td {
  border-bottom: none;
}
tr:hover {
  background: var(--gray-50);
}

/* 3. Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: 1rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}
h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-top: 2.5rem;
}
h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-top: 2rem;
}
h4 {
  font-size: 1.125rem;
  margin-top: 1.5rem;
}
p {
  margin-bottom: 1rem;
  color: var(--gray-700);
}
strong, b {
  font-weight: 600;
  color: var(--gray-900);
}
small {
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* 4. Layout (container, grids) */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section {
  padding: 4rem 0;
}
.section-sm {
  padding: 2.5rem 0;
}
.section-lg {
  padding: 6rem 0;
}
.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-2 {
  grid-template-columns: 1fr;
}
.grid-3 {
  grid-template-columns: 1fr;
}
.grid-4 {
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (min-width: 1024px) {
  .section {
    padding: 5rem 0;
  }
  .section-lg {
    padding: 7rem 0;
  }
}

/* 5. Top Bar */
.top-bar {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: 0.5rem 0;
  font-size: 0.875rem;
  text-align: center;
}
.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.top-bar i {
  color: var(--accent);
}

/* 6. Header & Navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  min-height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gray-900);
}
.logo i {
  font-size: 1.5rem;
  color: var(--primary);
}
.logo span {
  color: var(--primary);
  font-weight: 800;
}
.nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
}
.nav-link {
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.5rem 0;
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-dropdown {
  position: relative;
}
.nav-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.5rem 0;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-dropdown-btn:hover {
  color: var(--primary);
}
.nav-dropdown-btn i {
  transition: var(--transition);
}
.nav-dropdown.open .nav-dropdown-btn i {
  transform: rotate(180deg);
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 100;
}
.nav-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-item {
  display: block;
  padding: 0.625rem 1.25rem;
  color: var(--gray-700);
  font-weight: 500;
  transition: var(--transition);
}
.dropdown-item:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding-left: 1.5rem;
}
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  z-index: 1001;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}
@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
  .nav {
    display: flex;
  }
}

/* 7. Hamburger & Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 1.5rem;
  transform: translateY(-150%);
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}
.mobile-menu.active {
  transform: translateY(0);
}
.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.mobile-nav-link {
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 0.75rem;
}
.mobile-nav-link:last-child {
  border-bottom: none;
}
.mobile-dropdown {
  margin-top: 0.5rem;
  padding-left: 1rem;
  border-left: 2px solid var(--primary-light);
}
.mobile-dropdown-item {
  display: block;
  padding: 0.375rem 0;
  color: var(--gray-600);
  font-size: 0.9375rem;
}
.mobile-dropdown-item:hover {
  color: var(--primary);
}

/* 8. Dropdown Menu */
/* Already handled in section 6 */

/* 9. Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}
.hero-badge i {
  color: var(--accent);
}
.hero h1 {
  color: #fff;
  margin-bottom: 1.25rem;
  max-width: 65ch;
}
.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  max-width: 60ch;
  margin-bottom: 2rem;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.hero-stat {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}
.hero-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}
.hero-stat-label {
  font-size: 0.8125rem;
  opacity: 0.9;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-xl);
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: var(--primary);
}
.hero-cta i {
  transition: var(--transition);
}
.hero-cta:hover i {
  transform: translateX(4px);
}

/* 10. Calculator */
.calculator {
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  margin: -3rem auto 3rem;
  position: relative;
  z-index: 10;
  max-width: 900px;
}
.calculator-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}
.calculator-header h2 {
  margin-bottom: 0.5rem;
  font-size: 1.75rem;
}
.calculator-header p {
  color: var(--gray-600);
  margin-bottom: 0;
}
.calculator-step {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.calculator-step-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1.25rem;
  font-size: 1.125rem;
}
.calculator-step-title .badge {
  background: var(--primary);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 700;
}
.calculator-grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 768px) {
  .calculator-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .calculator-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
.calculator-field {
  margin-bottom: 1rem;
}
.calculator-label {
  display: block;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
}
.calculator-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background: #fff;
  color: var(--gray-900);
  transition: var(--transition);
}
.calculator-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.calculator-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background: #fff;
  color: var(--gray-900);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B6BAA' 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 1rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}
.calculator-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.calculator-check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.calculator-check {
  position: relative;
}
.calculator-check input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.calculator-check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: #fff;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}
.calculator-check input:checked + .calculator-check-label {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}
.calculator-check-label::before {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid var(--gray-400);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.calculator-check input[type="radio"] + .calculator-check-label::before {
  border-radius: 50%;
}
.calculator-check input:checked + .calculator-check-label::before {
  border-color: var(--primary);
  background: var(--primary);
}
.calculator-check input:checked + .calculator-check-label::after {
  content: '✓';
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  position: absolute;
  left: 4px;
}
.calculator-submit {
  width: 100%;
  background: var(--gray-900);
  color: #fff;
  font-weight: 700;
  padding: 1rem 2rem;
  border-radius: var(--radius-xl);
  font-size: 1.125rem;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.calculator-submit:hover {
  background: var(--gray-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* 11. Calculator Results */
.calculator-results {
  display: none;
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 2px solid var(--gray-200);
}
.calculator-results.active {
  display: block;
  animation: fadeIn 0.4s ease;
}
.results-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .results-metrics {
    grid-template-columns: repeat(4, 1fr);
  }
}
.result-card {
  text-align: center;
  padding: 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.result-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}
.result-label {
  font-size: 0.8125rem;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.result-sublabel {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}
.results-alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  border-left: 4px solid;
  font-weight: 500;
}
.results-alert.critical {
  background: var(--danger-light);
  border-color: var(--danger);
  color: #991b1b;
}
.results-alert.high {
  background: var(--warning-light);
  border-color: var(--warning);
  color: #92400e;
}
.results-alert.medium {
  background: var(--success-light);
  border-color: var(--success);
  color: #065f46;
}
.results-alert.low {
  background: var(--accent-light);
  border-color: var(--accent);
  color: #0e7490;
}
.results-document {
  background: #fff;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
}
.results-doc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-300);
  flex-wrap: wrap;
  gap: 0.75rem;
}
.results-doc-title {
  font-weight: 700;
  color: var(--gray-900);
  font-size: 0.9375rem;
}
.results-doc-actions {
  display: flex;
  gap: 0.5rem;
}
.results-doc-btn {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition);
}
.results-doc-btn.outline {
  background: transparent;
  border: 1px solid var(--gray-400);
  color: var(--gray-700);
}
.results-doc-btn.outline:hover {
  background: var(--gray-100);
}
.results-doc-btn.primary {
  background: var(--primary);
  color: #fff;
}
.results-doc-btn.primary:hover {
  background: var(--primary-dark);
}
.results-doc-content {
  padding: 1.5rem;
  font-family: 'Times New Roman', Times, serif;
  font-size: 1.05rem;
  color: #000;
  line-height: 1.7;
}
.results-doc-content.simple {
  font-family: inherit;
  font-size: 1rem;
  color: var(--gray-800);
}
.results-doc-content h3 {
  font-family: inherit;
  color: var(--gray-900);
  margin-top: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-200);
}
.results-doc-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.results-doc-content li {
  margin-bottom: 0.5rem;
  color: var(--gray-700);
}
.results-dictionary {
  padding: 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}
.results-dictionary-title {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
}
.results-tag {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--gray-200);
  color: var(--gray-700);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  margin: 0 0.5rem 0.5rem 0;
  transition: var(--transition);
}
.results-tag:hover {
  background: var(--gray-300);
  color: var(--gray-900);
}

/* 11a. Calculator Article / Methodology */
.pillar-content {
  margin-top: 3rem;
}
.pillar-content .info-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
}
.pillar-content .info-box.highlight {
  background: var(--accent-light);
  border-left-color: var(--accent);
}
.pillar-content .info-box.success {
  background: var(--success-light);
  border-left-color: var(--success);
}
.pillar-content .info-box.warning {
  background: var(--warning-light);
  border-left-color: var(--warning);
}
.pillar-content .info-box.danger {
  background: var(--danger-light);
  border-left-color: var(--danger);
}
.methodology-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: 2rem 0;
}
@media (min-width: 768px) {
  .methodology-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}
.methodology-card {
  padding: 1.5rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: var(--transition);
}
.methodology-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.methodology-card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}
.methodology-card-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}
.methodology-card-title {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
}
.methodology-card-desc {
  font-size: 0.9375rem;
  color: var(--gray-600);
}
.variant-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: 1.5rem 0;
}
@media (min-width: 768px) {
  .variant-cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.variant-card {
  padding: 1.5rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-200);
  transition: var(--transition);
}
.variant-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.variant-card-title {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
}
.variant-card-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0.5rem 0;
}
.variant-card-desc {
  font-size: 0.9375rem;
  color: var(--gray-600);
}
.comparison-table {
  margin: 1.5rem 0;
}
.comparison-table th,
.comparison-table td {
  padding: 1rem;
}
.comparison-table th {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.table-summary {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}
.table-summary-card {
  flex: 1;
  min-width: 200px;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  text-align: center;
}
.table-summary-value {
  font-weight: 700;
  color: var(--gray-900);
  font-size: 1.125rem;
}
.table-summary-label {
  font-size: 0.8125rem;
  color: var(--gray-600);
}
.chart-container {
  margin: 2rem 0;
  padding: 1rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  min-height: 300px;
}
.regional-table {
  margin-top: 1rem;
  font-size: 0.9375rem;
}
.pros-cons-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}
@media (min-width: 768px) {
  .pros-cons-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.pros-list,
.cons-list {
  padding: 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
}
.pros-list h4 {
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.cons-list h4 {
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.pros-list ul,
.cons-list ul {
  padding-left: 1.25rem;
}
.pros-list li,
.cons-list li {
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  color: var(--gray-700);
}
.factors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
@media (min-width: 768px) {
  .factors-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.factor-card {
  padding: 1.25rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  text-align: center;
}
.factor-card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin: 0 auto 0.75rem;
}
.factor-card-title {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}
.factor-card-desc {
  font-size: 0.875rem;
  color: var(--gray-600);
}
.kpi-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.kpi-card {
  text-align: center;
  padding: 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
}
.kpi-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.25rem;
}
.kpi-label {
  font-size: 0.8125rem;
  color: var(--gray-600);
  font-weight: 600;
}
.checklist-box {
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
}
.checklist-box h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--secondary);
  margin-bottom: 1rem;
}
.checklist-box ul {
  padding-left: 1.5rem;
}
.checklist-box li {
  margin-bottom: 0.5rem;
  font-size: 0.9375rem;
  color: var(--gray-700);
  position: relative;
}
.checklist-box li::before {
  content: '✓';
  position: absolute;
  left: -1.25rem;
  color: var(--success);
  font-weight: 700;
}
/* 12. Savings Banner */
.savings-banner {
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  margin: 2rem 0;
  border: 1px solid var(--gray-200);
}
.savings-banner-title {
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}
.savings-banner-desc {
  color: var(--gray-600);
  font-size: 0.9375rem;
}

/* 13. Chart Container */
/* Already handled in section 11a */

/* 14. Section: How It Works */
.how-it-works {
  background: #fff;
}
.how-it-works .container {
  text-align: center;
}
.how-it-works h2 {
  margin-bottom: 0.5rem;
}
.how-it-works > p {
  color: var(--gray-600);
  max-width: 60ch;
  margin: 0 auto 2.5rem;
}
.how-it-works-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .how-it-works-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.how-it-works-card {
  padding: 2rem;
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  text-align: left;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
}
.how-it-works-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.how-it-works-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
}
.how-it-works-card h3 {
  margin-top: 0;
  font-size: 1.25rem;
}
.how-it-works-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin-bottom: 0;
}

/* 15. Author Box */
.author-box {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  margin: 3rem 0;
}
.author-avatar {
  flex-shrink: 0;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--primary-light);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}
.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.author-avatar-placeholder {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}
.author-content {
  flex: 1;
}
.author-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}
.author-title {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  display: block;
}
.author-links {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.author-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  color: var(--gray-600);
  transition: var(--transition);
}
.author-link:hover {
  color: var(--primary);
}
.author-bio {
  font-size: 0.9375rem;
  color: var(--gray-700);
  line-height: 1.7;
}
.author-bio p {
  margin-bottom: 0.75rem;
}
.author-bio p:last-child {
  margin-bottom: 0;
}
@media (max-width: 767px) {
  .author-box {
    flex-direction: column;
    text-align: center;
  }
  .author-avatar {
    margin: 0 auto;
  }
  .author-links {
    justify-content: center;
  }
}

/* 16. Knowledge Base / Articles Grid */
.knowledge-base {
  background: var(--gray-50);
}
.knowledge-base .container {
  text-align: center;
}
.knowledge-base h2 {
  margin-bottom: 0.5rem;
}
.knowledge-base > p {
  color: var(--gray-600);
  max-width: 60ch;
  margin: 0 auto 2.5rem;
}
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.article-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  text-align: left;
  transition: var(--transition);
  height: 100%;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.article-card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
.article-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}
.article-card-desc {
  font-size: 0.9375rem;
  color: var(--gray-600);
  margin-bottom: 1rem;
  flex: 1;
}
.article-card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--gray-100);
  color: var(--gray-700);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9375rem;
}
.article-card-link i {
  transition: var(--transition);
}
.article-card-link:hover i {
  transform: translateX(4px);
}

/* 17. Testimonials */
.testimonials {
  background: #fff;
}
.testimonials .container {
  text-align: center;
}
.testimonials h2 {
  margin-bottom: 0.5rem;
}
.testimonials > p {
  color: var(--gray-600);
  max-width: 60ch;
  margin: 0 auto 2.5rem;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.testimonial-card {
  padding: 1.5rem;
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  text-align: left;
  border: 1px solid var(--gray-200);
}
.testimonial-stars {
  color: var(--warning);
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  letter-spacing: 2px;
}
.testimonial-quote {
  font-size: 0.9375rem;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: 1rem;
  font-style: italic;
}
.testimonial-author {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.9375rem;
}
.testimonial-role {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

/* 18. CTA Section */
/* REMOVED - All CTA buttons removed per user request */

/* 19. FAQ Accordion */
.faq-section {
  background: var(--gray-50);
}
.faq-section .container {
  max-width: 800px;
}
.faq-section h2 {
  text-align: center;
  margin-bottom: 0.5rem;
}
.faq-section > p {
  text-align: center;
  color: var(--gray-600);
  margin-bottom: 2.5rem;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  overflow: hidden;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1rem;
}
.faq-question:hover {
  background: var(--gray-50);
}
.faq-question i {
  color: var(--primary);
  transition: var(--transition);
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer {
  padding: 0 1.5rem 1.25rem;
  max-height: 500px;
}
.faq-answer p {
  color: var(--gray-700);
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}
.faq-answer a {
  font-weight: 600;
}

/* 20. Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 1rem;
}
.footer-col p {
  color: var(--gray-400);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 0.5rem;
}
.footer-col a {
  color: var(--gray-400);
  font-size: 0.9375rem;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-800);
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-500);
}
.footer-bottom a {
  color: var(--gray-400);
}

/* 21. Back-to-Top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

/* 22. Breadcrumb */
.breadcrumb {
  padding: 1rem 0;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-600);
}
.breadcrumb-list a {
  color: var(--gray-600);
  transition: var(--transition);
}
.breadcrumb-list a:hover {
  color: var(--primary);
}
.breadcrumb-list span {
  color: var(--gray-400);
}
.breadcrumb-list .current {
  color: var(--gray-900);
  font-weight: 600;
}

/* 23. Article Hero */
.article-hero {
  padding: 3rem 0 2rem;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
}
.article-hero-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  color: var(--gray-500);
}
.article-hero-tag {
  padding: 0.25rem 0.75rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.75rem;
}
.article-hero h1 {
  max-width: 75ch;
  margin-bottom: 0;
}

/* 24. Article Content (content-area) */
.content-area {
  padding: 2.5rem 0;
  max-width: 75ch;
  margin: 0 auto;
}
.content-area p {
  margin-bottom: 1.25rem;
}
.content-area h2 {
  margin-top: 2.5rem;
}
.content-area h3 {
  margin-top: 2rem;
}
.content-area ul,
.content-area ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}
.content-area li {
  margin-bottom: 0.5rem;
  color: var(--gray-700);
}
.content-area img {
  border-radius: var(--radius-lg);
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}

/* 25. Tables (comparison-table) */
/* Already handled in section 2 */

/* 26. Info Boxes (success, warning, tip) */
/* Already handled in section 11a */

/* 27. Inline CTA */
/* REMOVED - All CTA buttons removed per user request */

/* 28. Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.justify-center { justify-content: center; }
.items-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 29. Animations (@keyframes) */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* 30. Media Queries (mobile-first breakpoints) */
@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
  .hero {
    padding: 6rem 0 5rem;
  }
  .calculator {
    padding: 2.5rem;
  }
}
@media (min-width: 1024px) {
  .container {
    padding: 0 3rem;
  }
  .section {
    padding: 6rem 0;
  }
  .section-lg {
    padding: 8rem 0;
  }
}
@media (max-width: 767px) {
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .results-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}