/**
 * MODERNABG Homepage Redesign - Main Stylesheet
 * Mobile-first responsive design
 * Breakpoints: 480px (mobile), 768px (tablet), 1024px (desktop), 1440px (large desktop)
 * 
 * CSS Architecture:
 * 1. CSS Variables (colors, spacing, typography)
 * 2. Base styles (reset, typography, utilities)
 * 3. Layout components (hero, grid, cards, carousel, FAQ)
 * 4. Interactive elements (buttons, forms, hover states)
 * 5. Responsive breakpoints (mobile → tablet → desktop)
 * 6. Accessibility (focus states, reduced motion, high contrast)
 */

/* ========================================
   1. CSS VARIABLES
   ======================================== */

:root {
  /* Colors - Branding */
  --color-primary: #DA3136;      /* Red - main brand color */
  --color-secondary: #0066CC;    /* Blue - secondary calls to action */
  --color-accent: #FFA500;       /* Orange - highlights, badges */
  
  /* Colors - Neutrals */
  --color-dark: #1a1a1a;         /* Very dark gray (headings) */
  --color-heading: #FFFFFF;      /* White headings/titles */
  --color-text: #E5E5E5;         /* Light gray (body text) */
  --color-text-light: #B0B0B0;   /* Medium gray (secondary text) */
  --color-text-lighter: #808080; /* Light gray (placeholder, meta) */
  --color-border: #404040;       /* Border color */
  --color-bg-light: #2A2A2A;     /* Dark background */
  --color-white: #FFFFFF;        /* Keep as white for elements that require pure white */
  --color-card-bg: #1e1e1e;      /* Dark card background */
  
  /* Colors - Status */
  --color-success: #28A745;
  --color-warning: #FFC107;
  --color-error: #DC3545;
  --color-info: #17A2B8;
  
  /* Spacing - 8px base unit */
  --spacing-unit: 8px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 64px;
  --spacing-4xl: 80px;
  --spacing-5xl: 96px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Sizing */
  --container-width: 100%;
  --container-padding: var(--spacing-md);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Touch target size */
  --touch-target: 44px;
}

/* ========================================
   2. BASE STYLES & RESET
   ======================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: #1a1a1a;
}

/* Remove default margins from headings and paragraphs */
h1, h2, h3, h4, h5, h6,
p, ul, ol, dl {
  margin: 0;
  padding: 0;
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-heading);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-heading);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-heading);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

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

a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* Remove default list styles */
ul, ol {
  list-style: none;
}

/* ========================================
   3. UTILITY CLASSES
   ======================================== */

.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

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

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

.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* ========================================
   4. HERO SECTION
   ======================================== */

.hero-section {
  background: linear-gradient(135deg, #DA3136 0%, #B8252A 100%);
  color: var(--color-white);
  padding: var(--spacing-4xl) var(--spacing-md);
  text-align: center;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-section h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.hero-section p {
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

/* ========================================
   5. BUTTON STYLES
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: var(--touch-target);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: #B8252A;
  border-color: #B8252A;
  color: var(--color-white) !important;
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white) !important;
  box-shadow: var(--shadow-md);
}

/* Hero Section CTAs & A/B Testing Hover States */
.btn-hero-primary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-hero-secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

/* 
   A/B TESTING FOR HERO CTA HOVER STATES
   To switch active test variation, toggle commenting between A and B below.
*/

/* VARIATION A: Crimson Background Fill Hover (Currently Active) */
.btn-hero-primary:hover {
  background-color: #B8252A !important;
  border-color: #B8252A !important;
  color: var(--color-white) !important;
  box-shadow: var(--shadow-lg);
}

/* VARIATION B: White Background with Dark Crimson Text Hover (Alternative) */
/*
.btn-hero-primary:hover {
  background-color: var(--color-white) !important;
  border-color: var(--color-white) !important;
  color: #B8252A !important;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.4);
}
*/

.btn-hero-secondary:hover {
  background-color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-white) !important;
  box-shadow: var(--shadow-lg);
}


/* Button Sizes */
.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn-block {
  width: 100%;
}

/* ========================================
   6. SERVICES GRID
   ======================================== */

.services-section {
  padding: var(--spacing-4xl) var(--spacing-md);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-4xl);
}

.service-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.service-card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--color-bg-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.service-card-icon img {
  width: 60px;
  height: 60px;
}

.service-card h3 {
  text-align: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-heading);
}

.service-card-description {
  flex: 1;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

.service-card-benefits {
  margin-bottom: var(--spacing-md);
}

.service-card-benefits li {
  padding-left: var(--spacing-lg);
  position: relative;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.service-card-benefits li strong {
  color: var(--color-heading);
}

.service-card-benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

.service-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-lighter);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.service-card-price {
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

.service-card-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.service-card-actions .btn {
  flex: 1;
  min-width: 120px;
}

/* ========================================
   7. BUNDLE PACKAGE SECTION
   ======================================== */

.bundle-section {
  background-color: var(--color-bg-light);
  padding: var(--spacing-4xl) var(--spacing-md);
  border-radius: var(--radius-xl);
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.bundle-header {
  margin-bottom: var(--spacing-lg);
}

.bundle-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.bundle-price {
  font-size: var(--font-size-5xl);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.bundle-savings {
  color: var(--color-success);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
}

.bundle-features {
  margin-bottom: var(--spacing-lg);
}

.bundle-features li {
  padding-left: var(--spacing-lg);
  position: relative;
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.bundle-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

/* ========================================
   8. CAROUSEL
   ======================================== */

.carousel {
  position: relative;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.carousel-container {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-bottom: 100%; /* 1:1 aspect ratio */
}

.carousel-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  transition: transform var(--transition-normal);
}

.carousel-item {
  width: 100%;
  height: 100%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-controls {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 10;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.carousel-dot.active {
  background-color: var(--color-white);
}

.carousel-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0, 0, 0, 0.5);
  color: var(--color-white);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
  z-index: 11;
}

.carousel-button:hover {
  background-color: rgba(0, 0, 0, 0.7);
}

.carousel-prev {
  left: var(--spacing-md);
}

.carousel-next {
  right: var(--spacing-md);
}

/* ========================================
   9. TESTIMONIALS SECTION
   ======================================== */

.testimonials-section {
  padding: var(--spacing-4xl) var(--spacing-md);
}

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

.testimonial-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.testimonial-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.testimonial-text::before {
  content: """;
  font-size: var(--font-size-5xl);
  color: var(--color-primary);
  line-height: 0;
}

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

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-bg-light);
  flex-shrink: 0;
  overflow: hidden;
}

.testimonial-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial-author-info {
  flex: 1;
}

.testimonial-author-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-heading);
}

.testimonial-author-company {
  font-size: var(--font-size-sm);
  color: var(--color-text-lighter);
}

/* ========================================
   10. FAQ SECTION
   ======================================== */

.faq-section {
  padding: var(--spacing-4xl) var(--spacing-md);
}

.faq-list {
  margin-bottom: var(--spacing-lg);
}

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

.faq-header {
  background-color: var(--color-bg-light);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background-color var(--transition-fast);
}

.faq-header:hover {
  background-color: #3a3a3a;
}

.faq-header:focus-within {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.faq-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-heading);
  margin: 0;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-content {
  padding: var(--spacing-lg);
  background-color: var(--color-card-bg);
  display: none;
}

.faq-item.open .faq-content {
  display: block;
}

.faq-content p {
  margin: 0;
}

/* ========================================
   11. CONTACT SECTION
   ======================================== */

.contact-section {
  background-color: var(--color-bg-light);
  padding: var(--spacing-4xl) var(--spacing-md);
  text-align: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.contact-method {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.contact-method a {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ========================================
   12. FORMS
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="phone"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-heading);
  background-color: #2d2d2d;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(218, 49, 54, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   13. MOBILE MENU
   ======================================== */

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-md);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 999;
  overflow-y: auto;
}

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

.mobile-menu-close {
  background: none;
  border: none;
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  padding: var(--spacing-md);
  float: right;
}

/* ========================================
   14. ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Dark theme default settings enabled */

/* ========================================
   15. RESPONSIVE BREAKPOINTS
   ======================================== */

/* Tablet (768px) */
@media (min-width: 768px) {
  :root {
    --container-padding: var(--spacing-lg);
  }
  
  .container {
    max-width: 750px;
  }
  
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .menu-toggle {
    display: none;
  }

  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
  
  .hero-cta .btn {
    margin: 0 var(--spacing-md);
  }
}

/* Desktop (1024px) */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--spacing-xl);
  }
  
  .container {
    max-width: 1000px;
  }
  
  h1 {
    font-size: var(--font-size-5xl);
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

/* Large Desktop (1440px) */
@media (min-width: 1440px) {
  :root {
    --container-padding: var(--spacing-xl);
  }
  
  .container {
    max-width: 1200px;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
  }
}

/* ========================================
   16. PRINT STYLES
   ======================================== */

@media print {
  body {
    background-color: white;
    color: black;
  }
  
  a {
    text-decoration: underline;
  }
  
  .hidden-print {
    display: none !important;
  }
}

/* ========================================
   17. B2B CORPORATE RETAINER TIERS
   ======================================== */
.b2b-section {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: #0f0f0f;
  color: var(--color-white);
  text-align: center;
}
.b2b-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}
.b2b-section .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xl);
}
.b2b-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  max-width: 1280px;
  margin: 0 auto;
}
.b2b-card {
  background-color: #1e1e1e;
  border: 1px solid #333;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: left;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.b2b-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(218, 49, 54, 0.2);
  border-color: var(--color-primary);
}
.b2b-card.premium {
  border: 2px solid var(--color-primary);
  position: relative;
}
.b2b-card.premium::before {
  content: "НАЙ-ПОПУЛЯРЕН";
  position: absolute;
  top: -12px;
  right: var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  padding: 2px 10px;
  border-radius: 10px;
  letter-spacing: 1px;
}
:lang(en) .b2b-card.premium::before {
  content: "MOST POPULAR";
}
.b2b-card h3 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}
.b2b-price {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}
.b2b-price span {
  font-size: var(--font-size-base);
  color: var(--color-text-lighter);
  font-weight: var(--font-weight-normal);
}
.b2b-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
}
.b2b-features li {
  margin-bottom: var(--spacing-sm);
  position: relative;
  padding-left: var(--spacing-lg);
  color: rgba(255, 255, 255, 0.9);
}
.b2b-features li::before {
  content: "✓";
  color: var(--color-primary);
  position: absolute;
  left: 0;
  font-weight: var(--font-weight-bold);
}

/* ========================================
   18. B2C RETAIL PACKAGES
   ======================================== */
.b2c-section {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: #0c0c0c;
  text-align: center;
}
.b2c-section h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}
.b2c-section .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xl);
}
.b2c-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}
.b2c-card {
  background-color: #1e1e1e;
  border: 1px solid #333;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: left;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}
.b2c-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 20px rgba(218, 49, 54, 0.15);
  border-color: var(--color-primary);
}
.b2c-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}
.b2c-price {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}
.b2c-features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
  flex-grow: 1;
}
.b2c-features li {
  margin-bottom: var(--spacing-xs);
  position: relative;
  padding-left: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-tight);
  color: rgba(255, 255, 255, 0.9);
}
.b2c-features li::before {
  content: "•";
  color: var(--color-primary);
  position: absolute;
  left: 0;
  font-weight: var(--font-weight-bold);
}

/* ========================================
   19. INTERACTIVE UPSELL CALCULATOR
   ======================================== */
.calculator-section {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: #141414;
}
.calculator-section h2 {
  text-align: center;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}
.calculator-section .section-subtitle {
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xl);
}
.calculator-card {
  background-color: #1e1e1e;
  border: 1px solid #333;
  border-radius: var(--radius-lg);
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
}
.calc-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}
.calc-group {
  display: flex;
  flex-direction: column;
}
.calc-group label {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
}
.calc-select {
  padding: var(--spacing-md);
  border: 1px solid #444;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background-color: #2d2d2d;
  color: var(--color-white);
  height: 50px;
}
.calc-addons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}
.addon-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid #444;
  border-radius: var(--radius-md);
  cursor: pointer;
  background-color: #252525;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.addon-item:hover {
  background-color: #2d2d2d;
}
.addon-item.selected {
  border-color: var(--color-primary);
  background-color: rgba(218, 49, 54, 0.05);
}
.addon-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.addon-info {
  flex-grow: 1;
}
.addon-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
}
.addon-price {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}
.calc-total-box {
  background-color: #2c1213;
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.calc-total-label {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}
.calc-total-value {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* ========================================
   20. SERVICE RULES & LOGISTICS
   ======================================== */
.logistics-section {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: #0f0f0f;
  color: var(--color-white);
}
.logistics-section h2 {
  color: var(--color-white);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}
.logistics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
}
.logistics-card {
  background-color: #1e1e1e;
  border: 1px solid #333;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
}
.logistics-icon {
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}
.logistics-card h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}
.logistics-card p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

/* Responsive grid overrides for B2B, B2C, Calculator, Logistics */
@media (min-width: 768px) {
  .b2b-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .b2c-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .logistics-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .calc-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1100px) {
  .b2b-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   21. ABOUT US PAGE REDESIGN
   ======================================== */
.about-section-title {
  color: var(--color-primary);
}
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}
.about-intro-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}
.about-mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}
.about-mission-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: transform var(--transition-normal);
}
.about-mission-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.about-mission-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

/* Timeline Layout */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background-color: var(--color-border);
}
.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  padding-left: 50px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 2px solid var(--color-white);
  z-index: 2;
  transition: transform var(--transition-fast);
}
.timeline-item:hover::before {
  transform: scale(1.3);
}
.timeline-year {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}
.timeline-content {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

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

@media (min-width: 1024px) {
  .b2c-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}