/* ============================================
   KALKULATOR BETONU - DESIGN SYSTEM
   Deep Teal × Arctic Cyan — Hydraulika 2026
   ============================================ */

/* --- 1. CSS Custom Properties --- */
:root {
  /* Deep Teal × Arctic Cyan — Hydraulika 2026 */
  --primary: #0e7490;
  --primary-dark: #0a5568;
  --primary-light: #f0fafb;
  --primary-hover: #0891b2;
  
  /* Accent Colors */
  --accent: #22d3ee;
  --accent-light: #ecfeff;
  --accent-dark: #06b6d4;
  
  /* Secondary */
  --secondary: #083344;
  --secondary-light: #164e63;
  
  /* Semantic Colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-dark: #059669;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --danger-dark: #dc2626;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-dark: #d97706;
  --info: #3b82f6;
  --info-light: #dbeafe;
  --info-dark: #2563eb;
  
  /* Gray Scale */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Shadows - Deep Teal tinted */
  --shadow-sm: 0 1px 2px rgba(14,116,144,.08);
  --shadow: 0 1px 3px rgba(14,116,144,.12), 0 1px 2px -1px rgba(14,116,144,.12);
  --shadow-md: 0 4px 12px rgba(14,116,144,.14);
  --shadow-lg: 0 8px 24px rgba(14,116,144,.18);
  --shadow-xl: 0 16px 48px rgba(14,116,144,.22);
  --shadow-2xl: 0 25px 50px -12px rgba(14,116,144,.25);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;
  
  /* Transitions */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s ease;
}

/* --- 2. Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-50);
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

ul, ol {
  list-style: none;
}

/* --- 3. Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

p {
  margin-bottom: var(--space-4);
  color: var(--gray-600);
}

.text-small {
  font-size: 0.875rem;
}

.text-large {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
}

.text-2xl {
  font-size: 1.5rem;
}

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.text-primary {
  color: var(--primary);
}

.text-accent {
  color: var(--accent);
}

.text-gray {
  color: var(--gray-500);
}

.text-white {
  color: white;
}

.text-center {
  text-align: center;
}

/* --- 4. Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

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

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

.gap-8 {
  gap: var(--space-8);
}

/* --- 5. Top Bar --- */
.top-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: var(--space-3) 0;
  font-size: 0.875rem;
  text-align: center;
  overflow: hidden;
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.top-bar i {
  font-size: 1rem;
}

/* --- 6. Header & Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gray-900);
}

.logo i {
  color: var(--primary);
  font-size: 1.5rem;
}

.logo span {
  color: var(--primary);
  font-weight: 600;
}

.logo-location {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: var(--gray-100);
}

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

/* --- 7. Hamburger & Mobile Menu --- */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  z-index: 1001;
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: var(--transition);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  z-index: 999;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu .nav-link {
  display: block;
  padding: var(--space-4);
  font-size: 1.125rem;
  border-bottom: 1px solid var(--gray-100);
}

.mobile-menu .dropdown-menu {
  position: static;
  box-shadow: none;
  border: none;
  padding-left: var(--space-6);
  display: none;
}

.mobile-menu .dropdown.open .dropdown-menu {
  display: block;
}

body.menu-open {
  overflow: hidden;
}

/* --- 8. Dropdown Menu --- */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.dropdown-toggle i {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}

.dropdown.open .dropdown-toggle i {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  z-index: 100;
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--gray-700);
  font-size: 0.9375rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.dropdown-item i {
  color: var(--primary);
  font-size: 1rem;
  width: 20px;
  text-align: center;
}

/* --- 9. Hero Section --- */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #78350f 100%);
  color: white;
  padding: var(--space-16) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-6);
}

.hero h1 {
  color: white;
  margin-bottom: var(--space-6);
  max-width: 800px;
}

.hero h1 span {
  color: var(--warning);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin-bottom: var(--space-8);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

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

.hero-stat {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
}

.hero-stat i {
  font-size: 2rem;
  color: var(--warning);
  margin-bottom: var(--space-3);
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: white;
  display: block;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

/* --- 10. Calculator --- */
.calculator-section {
  background: white;
  padding: var(--space-16) 0;
  overflow-x: hidden;
}

.calculator-section h2 {
  text-align: center;
  margin-bottom: var(--space-4);
}

.calculator-section > .container > p {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-10);
}

.calculator-container {
  background: var(--gray-50);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
}

@media (min-width: 768px) {
  .calculator-container {
    padding: var(--space-10);
  }
}

.calc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  border-bottom: 2px solid var(--gray-200);
  padding-bottom: var(--space-4);
}

.calc-tab {
  padding: var(--space-3) var(--space-5);
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-weight: 500;
  color: var(--gray-600);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
}

.calc-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.calc-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.calc-tab i {
  font-size: 1rem;
}

/* New Calculator Layout */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

@media (min-width: 1024px) {
  .calc-layout {
    grid-template-columns: 1fr 1.5fr;
  }
}

.calc-image-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  min-height: 300px;
  gap: var(--space-6);
}

/* Placeholder banner pod grafiką 3D */
.calc-placeholder {
  width: 100%;
  max-width: 360px;
  height: auto;
  flex-shrink: 0;
  margin: var(--space-6) auto 0;
}

.placeholder-link {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  margin: 0 auto;
}

.placeholder-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.placeholder-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  object-fit: contain;
  display: none;
}

.calc-placeholder .placeholder-img.active {
  display: block !important;
}

.calc-placeholder .placeholder-img {
  display: none;
}

.calc-image {
  max-width: 100%;
  max-height: 350px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.calc-form-wrapper {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--gray-200);
}

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

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .calc-image-wrapper {
    min-height: 200px;
    padding: var(--space-4);
    align-items: center;
  }
  
  .calc-image {
    max-height: 200px;
    margin: 0 auto;
  }
  
  .calc-placeholder {
    width: 100%;
    max-width: 360px;
    margin: var(--space-4) auto 0;
  }
  
  .placeholder-link {
    width: 100%;
    margin: 0 auto;
  }
  
  .placeholder-img {
    width: 100%;
    margin: 0 auto;
  }
}

/* Single variant results */
.results-grid.single-variant {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .results-grid.single-variant {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Legacy calc-grid for compatibility */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .calc-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.calc-column {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--gray-200);
}

.calc-column h3 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  font-size: 1.125rem;
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--gray-100);
}

.calc-column.variant-a h3 {
  color: var(--info);
  border-color: var(--info-light);
}

.calc-column.variant-a h3::before {
  content: 'A';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--info-light);
  color: var(--info);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 700;
}

.calc-column.variant-b h3 {
  color: var(--accent);
  border-color: var(--accent-light);
}

.calc-column.variant-b h3::before {
  content: 'B';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 700;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
  font-size: 0.9375rem;
}

.form-label span {
  color: var(--gray-400);
  font-weight: 400;
  font-size: 0.875rem;
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition);
  background: white;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.1);
}

.slider-container {
  margin-top: var(--space-2);
}

.slider {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--gray-200);
  outline: none;
  -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid white;
  box-shadow: var(--shadow);
}

.slider-value {
  display: inline-block;
  margin-left: var(--space-2);
  font-weight: 600;
  color: var(--primary);
  min-width: 50px;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
}

.checkbox-wrapper:hover {
  background: var(--gray-100);
}

.checkbox-wrapper input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  cursor: pointer;
}

.checkbox-wrapper label {
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--gray-700);
}

/* --- 11. Calculator Results --- */
.calc-results {
  display: none;
  margin-top: var(--space-10);
  animation: fadeInUp 0.5s ease;
}

.calc-results.show {
  display: block;
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.result-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 2px solid var(--gray-200);
  transition: var(--transition);
}

.result-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.result-card.variant-a {
  border-color: var(--info-light);
}

.result-card.variant-b {
  border-color: var(--accent-light);
}

.result-card h4 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: 1rem;
  color: var(--gray-600);
}

.result-card.variant-a h4 {
  color: var(--info);
}

.result-card.variant-b h4 {
  color: var(--accent);
}

.result-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.result-breakdown {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  padding: var(--space-2) 0;
  font-size: 0.9375rem;
}

.breakdown-item span:first-child {
  color: var(--gray-500);
}

.breakdown-item span:last-child {
  font-weight: 600;
  color: var(--gray-700);
}

.breakdown-total {
  display: flex;
  justify-content: space-between;
  padding: var(--space-3) 0;
  margin-top: var(--space-2);
  border-top: 2px solid var(--gray-200);
  font-weight: 700;
  font-size: 1.125rem;
}

.breakdown-total span:last-child {
  color: var(--primary);
}

/* --- 12. Savings Banner --- */
.savings-banner {
  background: #fef3c7;
  border: 2px solid #fcd34d;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  margin-bottom: var(--space-8);
}

.savings-banner.positive {
  background: #dcfce7;
  border-color: #86efac;
}

.savings-banner.negative {
  background: #fee2e2;
  border-color: #fca5a5;
}

.savings-banner i {
  font-size: 2.5rem;
  color: var(--warning);
  margin-bottom: var(--space-3);
}

.savings-banner.positive i {
  color: var(--success);
}

.savings-banner.negative i {
  color: var(--danger);
}

.savings-banner h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
  color: var(--gray-800);
}

.savings-banner p {
  color: var(--gray-600);
  margin-bottom: 0;
}

.savings-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--warning);
  display: block;
  margin: var(--space-2) 0;
}

.savings-banner.positive .savings-amount {
  color: var(--success);
}

.savings-banner.negative .savings-amount {
  color: var(--danger);
}

/* --- 13. Chart Container --- */
.chart-container {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--gray-200);
  margin-bottom: var(--space-8);
}

.chart-container h4 {
  text-align: center;
  margin-bottom: var(--space-6);
  font-size: 1.125rem;
}

.chart-wrapper {
  position: relative;
  height: 300px;
}

@media (min-width: 768px) {
  .chart-wrapper {
    height: 400px;
  }
}

/* --- 14. Section: How It Works --- */
.how-it-works {
  background: var(--gray-50);
  padding: var(--space-16) 0;
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: var(--space-4);
}

.how-it-works > .container > p {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

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

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.step-number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  box-shadow: var(--shadow-lg);
}

.step-icon {
  width: 80px;
  height: 80px;
  background: var(--primary-light);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-4) auto var(--space-6);
}

.step-icon i {
  font-size: 2rem;
  color: var(--primary);
}

.step-card h3 {
  margin-bottom: var(--space-3);
  font-size: 1.25rem;
}

.step-card p {
  color: var(--gray-500);
  margin-bottom: 0;
}

/* --- 15. Author Box --- */
.author-box {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .author-box {
    flex-direction: row;
    align-items: flex-start;
  }
}

.author-image {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-light);
  box-shadow: var(--shadow-md);
}

.author-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-content {
  flex: 1;
}

.author-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.author-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
}

.author-badge {
  background: var(--accent-light);
  color: var(--accent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.author-social {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.author-social a {
  width: 36px;
  height: 36px;
  background: var(--gray-100);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  transition: var(--transition);
}

.author-social a:hover {
  background: var(--primary);
  color: white;
}

.author-bio {
  color: var(--gray-600);
  line-height: 1.7;
}

.author-bio p {
  margin-bottom: var(--space-3);
}

.author-bio p:last-child {
  margin-bottom: 0;
}

/* --- 16. Knowledge Base / Articles Grid --- */
.knowledge-base {
  background: white;
  padding: var(--space-16) 0;
}

.knowledge-base h2 {
  text-align: center;
  margin-bottom: var(--space-4);
}

.knowledge-base > .container > p {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

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

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

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

.article-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.article-card-icon {
  height: 120px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #fef3c7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-card-icon i {
  font-size: 3rem;
  color: var(--primary);
}

.article-card-content {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  width: fit-content;
}

.article-card h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--gray-900);
}

.article-card h3 a:hover {
  color: var(--primary);
}

.article-card p {
  color: var(--gray-500);
  font-size: 0.9375rem;
  margin-bottom: var(--space-4);
  flex: 1;
}

.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--primary);
  font-size: 0.9375rem;
}

.article-card-link:hover {
  gap: var(--space-3);
}

/* --- 17. Testimonials --- */
.testimonials {
  background: var(--gray-50);
  padding: var(--space-16) 0;
}

.testimonials h2 {
  text-align: center;
  margin-bottom: var(--space-4);
}

.testimonials > .container > p {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

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

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
}

.testimonial-stars {
  color: var(--warning);
  margin-bottom: var(--space-4);
}

.testimonial-text {
  color: var(--gray-600);
  font-style: italic;
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
}

.testimonial-name {
  font-weight: 600;
  color: var(--gray-900);
}

.testimonial-title {
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* --- 18. CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: white;
  padding: var(--space-16) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-section h2 {
  color: white;
  margin-bottom: var(--space-4);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: var(--space-8);
}

/* --- 19. FAQ Accordion --- */
.faq-section {
  background: white;
  padding: var(--space-16) 0;
}

.faq-section h2 {
  text-align: center;
  margin-bottom: var(--space-4);
}

.faq-section > .container > p {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--gray-800);
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question i {
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: var(--space-4);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: var(--space-5);
}

.faq-answer p {
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer a {
  color: var(--primary);
  text-decoration: underline;
}

/* --- 20. Footer --- */
.footer {
  background: var(--gray-900);
  color: white;
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  margin-bottom: var(--space-4);
}

.footer-logo i {
  color: var(--primary);
  font-size: 1.5rem;
}

.footer-brand p {
  color: var(--gray-400);
  font-size: 0.9375rem;
  margin-bottom: var(--space-4);
}

.footer-company {
  font-size: 0.875rem;
  color: var(--gray-500);
}

.footer-column h4 {
  color: white;
  font-size: 1rem;
  margin-bottom: var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
  padding-left: var(--space-2);
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--space-6);
  text-align: center;
}

.footer-bottom p {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* --- 21. Back-to-Top --- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

/* --- 22. Breadcrumb --- */
.breadcrumb {
  background: var(--gray-50);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--gray-200);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.875rem;
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-list li:not(:last-child)::after {
  content: '/';
  color: var(--gray-400);
}

.breadcrumb-list a {
  color: var(--gray-500);
}

.breadcrumb-list a:hover {
  color: var(--primary);
}

.breadcrumb-list li:last-child {
  color: var(--gray-700);
  font-weight: 500;
}

/* --- 23. Article Hero --- */
.article-hero {
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--gray-200);
  overflow-x: hidden;
}

.article-hero h1 {
  max-width: 900px;
  margin-bottom: var(--space-4);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-500);
  font-size: 0.9375rem;
}

.article-meta-item i {
  color: var(--primary);
}

.article-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- 24. Article Content --- */
.content-area {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-10) 0;
}

.content-area h2 {
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  font-size: 1.75rem;
}

.content-area h2:first-child {
  margin-top: 0;
}

.content-area h3 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  font-size: 1.375rem;
  color: var(--gray-800);
}

.content-area h4 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: 1.125rem;
}

.content-area p {
  margin-bottom: var(--space-5);
  line-height: 1.8;
  color: var(--gray-600);
}

.content-area ul,
.content-area ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

.content-area ul {
  list-style: disc;
}

.content-area ol {
  list-style: decimal;
}

.content-area li {
  margin-bottom: var(--space-2);
  color: var(--gray-600);
  line-height: 1.7;
}

.content-area a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.content-area a:hover {
  color: var(--primary-dark);
}

.content-area blockquote {
  background: var(--gray-50);
  border-left: 4px solid var(--primary);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.content-area blockquote p {
  font-style: italic;
  color: var(--gray-700);
  margin-bottom: var(--space-3);
  font-size: 1.0625rem;
}

.content-area blockquote p:last-child {
  margin-bottom: 0;
}

.content-area blockquote cite {
  display: block;
  font-style: normal;
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin-top: var(--space-3);
}

/* --- 25. Tables --- */
.table-wrapper {
  overflow-x: auto;
  margin: var(--space-8) 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.comparison-table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-800);
}

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

.comparison-table tr:hover td {
  background: var(--gray-50);
}

.comparison-table td strong {
  color: var(--gray-800);
}

.comparison-table .highlight {
  background: var(--primary-light);
  font-weight: 600;
}

/* --- 26. Info Boxes --- */
.info-box {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  margin: var(--space-8) 0;
  display: flex;
  gap: var(--space-4);
}

.info-box i {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.info-box.success {
  background: var(--success-light);
  border: 1px solid #86efac;
}

.info-box.success i {
  color: var(--success);
}

.info-box.warning {
  background: var(--warning-light);
  border: 1px solid #fcd34d;
}

.info-box.warning i {
  color: var(--warning);
}

.info-box.tip {
  background: var(--info-light);
  border: 1px solid #93c5fd;
}

.info-box.tip i {
  color: var(--info);
}

.info-box-content h4 {
  margin-bottom: var(--space-2);
  font-size: 1.0625rem;
}

.info-box.success .info-box-content h4 {
  color: var(--success-dark);
}

.info-box.warning .info-box-content h4 {
  color: #92400e;
}

.info-box.tip .info-box-content h4 {
  color: var(--info-dark);
}

.info-box-content p {
  margin-bottom: 0;
  font-size: 0.9375rem;
}

/* --- 27. Inline CTA --- */
.inline-cta {
  background: linear-gradient(135deg, var(--primary-light) 0%, #fef3c7 100%);
  border: 2px solid var(--primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-10) 0;
  text-align: center;
}

.inline-cta h4 {
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
  color: var(--gray-800);
}

.inline-cta p {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.inline-cta .btn {
  margin: var(--space-2);
}

@media (max-width: 640px) {
  .inline-cta .btn {
    display: block;
    width: 100%;
    margin: var(--space-2) 0;
  }
}

/* --- 28. Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white !important;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white !important;
}

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  color: var(--gray-800);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--secondary);
  box-shadow: var(--shadow-md);
}

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

.btn-oferteo {
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: white !important;
  box-shadow: var(--shadow-md);
}

.btn-oferteo:hover {
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white !important;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
}

/* --- 29. Utility Classes --- */
.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;
}

.hidden {
  display: none !important;
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

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

.mb-6 {
  margin-bottom: var(--space-6);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.py-4 {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

/* --- 30. Animations --- */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 31. Media Queries --- */
@media (max-width: 1023px) {
  .nav {
    display: none;
  }
}

@media (max-width: 767px) {
  .hero {
    padding: var(--space-12) 0;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .calculator-container {
    padding: var(--space-5);
  }
  
  .calc-tabs {
    flex-direction: column;
    align-items: stretch;
  }
  
  .calc-tab {
    width: 100%;
    justify-content: center;
    white-space: normal;
  }
  
  .step-card {
    padding: var(--space-6);
  }
  
  .author-box {
    padding: var(--space-5);
  }
  
  .author-image {
    width: 100px;
    height: 100px;
  }
  
  .testimonial-card {
    padding: var(--space-5);
  }
  
  .footer-grid {
    gap: var(--space-8);
  }
  
  .faq-question {
    font-size: 1rem;
    padding: var(--space-4) 0;
  }
  
  .content-area h2 {
    font-size: 1.5rem;
  }
  
  .content-area h3 {
    font-size: 1.25rem;
  }
  
  .comparison-table {
    font-size: 0.875rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-3);
  }
  
  .info-box {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .inline-cta {
    padding: var(--space-5);
  }
  
  .result-value {
    font-size: 1.5rem;
    word-break: break-word;
  }
  
  .savings-amount {
    font-size: 2rem;
  }
  
  .breakdown-item,
  .breakdown-total {
    flex-wrap: wrap;
    gap: var(--space-1);
  }
  
  .chart-wrapper {
    height: 250px;
  }
}

@media (max-width: 479px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .logo {
    font-size: 1rem;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-stat-number {
    font-size: 1.5rem;
  }
  
  .btn-lg {
    padding: var(--space-3) var(--space-5);
    font-size: 1rem;
  }
  
  .calc-column {
    padding: var(--space-4);
  }
  
  .result-card {
    padding: var(--space-4);
  }
  
  .article-card-content {
    padding: var(--space-4);
  }
  
  .step-icon {
    width: 60px;
    height: 60px;
  }
  
  .step-icon i {
    font-size: 1.5rem;
  }
}

/* Print styles */
@media print {
  .header,
  .top-bar,
  .back-to-top,
  .cta-section,
  .hamburger,
  .mobile-menu {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  .content-area {
    max-width: 100%;
  }
  
  a {
    text-decoration: underline;
    color: black;
  }
  
  .calculator-section,
  .how-it-works,
  .knowledge-base,
  .testimonials,
  .faq-section {
    page-break-inside: avoid;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --primary: #92400e;
    --accent: #14532d;
    --gray-500: #374151;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .fade-in {
    opacity: 1;
    transform: none;
  }
}


/* Mobile overflow fixes */
@media (max-width: 640px) {
  .checkbox-wrapper {
    flex-wrap: wrap;
  }

  .btn {
    flex-wrap: wrap;
    white-space: normal;
    text-align: center;
  }

  .btn-lg {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .dropdown-menu {
    min-width: auto;
    width: 100%;
  }

  .container {
    padding: 0 var(--space-3);
  }

  .hero-stat-number {
    font-size: 1.75rem;
  }
}