/* ==========================================================================
   MAIN STYLESHEET
   VisiO Tech - AI Automatizace
   Base styles, layout utilities, blog styles, responsive design
   ========================================================================== */

@import url('design-system.css');
@import url('components.css');
@import url('blog.css');

/* ==========================================================================
   CSS RESET & BASE STYLES
   ========================================================================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  color: var(--text-secondary);
}

a {
  color: var(--color-primary-400);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-300);
}

a:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Spacing utilities */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: 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); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4) 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.site-brand {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.site-brand:hover {
  color: var(--color-primary-400);
}

.nav-menu {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-2);
}

.nav-link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.nav-link:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.nav-link.active {
  color: var(--color-primary-400);
}

/* Mobile menu button */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgb(0 0 0 / 0.5);
  z-index: var(--z-dropdown);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

/* Mobile menu active state */
.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  padding: var(--space-16) var(--space-6) var(--space-6);
  background-color: var(--bg-secondary);
  border-left: 1px solid var(--border-primary);
  z-index: var(--z-modal);
  transform: translateX(0);
  transition: transform var(--transition-slow);
}

body.menu-open {
  overflow: hidden;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding: var(--space-12) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-content {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-primary-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */

.services-section {
  padding: var(--space-12) 0;
}

.services-section h2 {
  text-align: center;
  margin-bottom: var(--space-10);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.service-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-600);
}

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
  background-color: var(--color-primary-600);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
}

.service-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.service-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.service-link {
  font-weight: var(--font-medium);
  color: var(--color-primary-400);
}

.service-link:hover {
  color: var(--color-primary-300);
}

/* ==========================================================================
   ENHANCED FOOTER
   ========================================================================== */

.site-footer {
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--border-primary);
  background-color: var(--bg-secondary);
}

/* Footer Grid Layout */
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Footer Brand Column */
.footer-brand-col h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.footer-brand-col .site-brand {
  display: inline-block;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: var(--space-3);
  transition: color var(--transition-base);
}

.footer-brand-col .site-brand:hover {
  color: var(--color-primary-400);
}

.footer-brand-col .footer-description {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

/* Footer Navigation Columns */
.footer-nav-col h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.footer-nav-col ul {
  list-style: none;
}

.footer-nav-col li {
  margin-bottom: var(--space-2);
}

.footer-nav-col a {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-base);
}

.footer-nav-col a:hover {
  color: var(--color-primary-400);
}

/* Social Links */
.social-links {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--bg-elevated);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.social-link:hover {
  background-color: var(--color-primary-600);
  color: var(--text-primary);
}

.social-link:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Footer Content (blog pages use simpler 3-column footer) */
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.footer-content .footer-brand .site-brand {
  display: inline-block;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: var(--space-3);
  transition: color var(--transition-base);
}

.footer-content .footer-brand .site-brand:hover {
  color: var(--color-primary-400);
}

.footer-content .footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

.footer-content .footer-nav h4,
.footer-content .footer-contact h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.footer-content .footer-nav ul {
  list-style: none;
}

.footer-content .footer-nav li {
  margin-bottom: var(--space-2);
}

.footer-content .footer-nav a {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-base);
}

.footer-content .footer-nav a:hover {
  color: var(--color-primary-400);
}

.footer-content .footer-contact p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.footer-content .footer-contact a {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-base);
}

.footer-content .footer-contact a:hover {
  color: var(--color-primary-400);
}

/* Footer Bottom Bar */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: var(--space-8) auto 0;
  padding: var(--space-6) var(--space-4) 0;
  border-top: 1px solid var(--border-primary);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* Footer Tech Badges (scoped override for smaller footer variant) */
.footer-bottom .tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer-bottom .tech-badge {
  padding: var(--space-1) var(--space-3);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-normal);
  color: var(--text-muted);
}

.footer-bottom .tech-badge:hover {
  border-color: var(--border-primary);
  transform: none;
}

.footer-bottom .tech-badge-icon {
  font-size: var(--text-sm);
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */

main {
  padding: var(--space-12) 0;
}

section {
  margin-bottom: var(--space-12);
}

section:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   GENERIC FOOTER (fallback for non-site-footer elements)
   ========================================================================== */

footer:not(.site-footer) {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border-primary);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   RESPONSIVE DESIGN - Mobile First
   ========================================================================== */

/* Tablet (640px+) */
@media (min-width: 640px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }

  h1 { font-size: var(--text-5xl); }

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

  .hero-title {
    font-size: var(--text-5xl);
  }

  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Small Desktop (768px+) */
@media (min-width: 768px) {
  .grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Show desktop navigation */
  .mobile-menu-btn {
    display: none;
  }

  .nav-menu {
    display: flex;
    position: static;
    flex-direction: row;
    width: auto;
    height: auto;
    padding: 0;
    background-color: transparent;
    border: none;
    transform: none;
  }

  .nav-overlay {
    display: none !important;
  }

  .site-nav {
    padding: 0 var(--space-6);
  }
}

/* Large Desktop (1024px+) */
@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  .footer-content {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  .footer-bottom {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  .site-nav {
    padding: 0 var(--space-8);
  }
}

/* Mobile-specific adjustments */
@media (max-width: 639px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }

  .hero-title {
    font-size: var(--text-3xl);
  }
}

/* Footer responsive: mobile/tablet */
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

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

  .footer-brand-col {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .footer-bottom .tech-badges {
    justify-content: center;
  }
}

/* Footer responsive: small mobile */
@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   SCROLL ANIMATIONS
   Progressive enhancement: animations only apply when JS is enabled
   ========================================================================== */

/* Default: content visible without JS */
.fade-in,
.fade-in-up,
.stagger-item {
  opacity: 1;
  transform: none;
}

/* When JS is enabled, hide elements until they become visible */
.js-enabled .fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.js-enabled .fade-in-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.js-enabled .stagger-item {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.js-enabled .stagger-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.js-enabled .stagger-item:nth-child(1) { transition-delay: 0.1s; }
.js-enabled .stagger-item:nth-child(2) { transition-delay: 0.2s; }
.js-enabled .stagger-item:nth-child(3) { transition-delay: 0.3s; }
.js-enabled .stagger-item:nth-child(4) { transition-delay: 0.4s; }
.js-enabled .stagger-item:nth-child(5) { transition-delay: 0.5s; }
.js-enabled .stagger-item:nth-child(6) { transition-delay: 0.6s; }
.js-enabled .stagger-item:nth-child(7) { transition-delay: 0.7s; }
.js-enabled .stagger-item:nth-child(8) { transition-delay: 0.8s; }

@media (prefers-reduced-motion: reduce) {
  .js-enabled .fade-in,
  .js-enabled .fade-in-up,
  .js-enabled .stagger-item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   WHY US / TRUST BUILDING SECTION
   ========================================================================== */

.why-us-section {
  padding: var(--space-16) 0;
  background-color: var(--bg-primary);
}

.why-us-section .section-header {
  margin-bottom: var(--space-12);
}

.why-us-section .section-header h2 {
  margin-bottom: var(--space-4);
}

.why-us-section .section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.subsection-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.stat-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-600);
}

.stat-number {
  display: block;
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-primary-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: var(--text-base);
  color: var(--text-secondary);
}

/* Tech Stack Badges */
.tech-stack-section {
  margin-bottom: var(--space-12);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  transition: border-color var(--transition-base), transform var(--transition-base), color var(--transition-base);
}

.tech-badge:hover {
  border-color: var(--color-primary-500);
  color: var(--text-primary);
  transform: scale(1.02);
}

.tech-icon {
  font-size: var(--text-lg);
}

/* Industries Grid */
.industries-section {
  margin-bottom: var(--space-12);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-6);
  max-width: 600px;
  margin: 0 auto;
}

.industry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  text-align: center;
  opacity: 0.8;
  transition: opacity var(--transition-base);
}

.industry-item:hover {
  opacity: 1;
}

.industry-icon {
  font-size: var(--text-3xl);
}

.industry-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

/* Testimonials */
.testimonials-section {
  margin-bottom: var(--space-8);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.testimonial-card {
  background-color: var(--bg-secondary);
  border-left: 4px solid var(--color-primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: 0;
  transition: box-shadow var(--transition-base);
}

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

.testimonial-quote {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

.testimonial-card figcaption {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.testimonial-author {
  font-weight: var(--font-medium);
  color: var(--text-primary);
  font-size: var(--text-sm);
}

.testimonial-company {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

/* ==========================================================================
   ABOUT US SECTION
   ========================================================================== */

.about-us-section {
  padding: var(--space-16) 0;
  background-color: var(--bg-secondary);
}

.about-us-section .section-header {
  margin-bottom: var(--space-12);
}

.about-us-section .section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Company Introduction */
.about-intro {
  max-width: 800px;
  margin: 0 auto var(--space-12);
}

.about-intro p {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.about-intro p:last-child {
  margin-bottom: 0;
}

/* Expertise Section */
.expertise-section {
  margin-bottom: var(--space-12);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}

.expertise-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-600);
}

.expertise-icon {
  display: block;
  font-size: var(--text-4xl);
  margin-bottom: var(--space-3);
}

.expertise-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.expertise-description {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* Team Photo */
.team-photo-wrapper {
  max-width: 800px;
  margin: 0 auto var(--space-12);
}

.team-photo-placeholder {
  aspect-ratio: 16 / 9;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--text-xl);
}

.team-photo-wrapper figcaption {
  margin-top: var(--space-4);
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--text-base);
}

/* Values Section */
.values-section {
  margin-bottom: var(--space-8);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}

.value-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.value-card:hover {
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-sm);
}

.value-icon {
  display: block;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

.value-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-primary-400);
}

.value-description {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   HOW IT WORKS - TIMELINE SECTION
   4 vertical steps with connecting line
   Desktop: vertical timeline, Mobile: stacked
   ========================================================================== */

.how-it-works-section {
  padding: var(--space-32) 0;
  background-color: var(--bg-secondary);
}

.how-it-works-section .section-header {
  margin-bottom: var(--space-12);
}

.how-it-works-section .section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.timeline {
  position: relative;
  padding-left: 100px;
}

/* Vertical connecting line */
.timeline::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-neutral-700);
}

.timeline-step {
  position: relative;
  margin-bottom: var(--space-12);
}

.timeline-step:last-child {
  margin-bottom: 0;
}

/* Step number circle – centered on the vertical line */
.step-number {
  position: absolute;
  left: -60px;
  top: 0;
  width: 80px;
  height: 80px;
  transform: translateX(-50%);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-accent-600));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  box-shadow: var(--shadow-glow);
  z-index: 1;
}

/* Step content card */
.step-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.step-content:hover {
  border-color: var(--border-secondary);
  box-shadow: var(--shadow-md);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.step-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.step-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.step-duration {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-primary-900);
  color: var(--color-primary-400);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
}

/* Timeline responsive: Tablet */
@media (max-width: 1024px) {
  .how-it-works-section {
    padding: var(--space-16) 0;
  }
}

/* Timeline responsive: Mobile */
@media (max-width: 768px) {
  .how-it-works-section {
    padding: var(--space-12) 0;
  }

  .how-it-works-section .section-header {
    margin-bottom: var(--space-8);
  }

  .timeline {
    padding-left: 56px;
  }

  .timeline::before {
    left: 20px;
  }

  .step-number {
    left: -36px;
    width: 40px;
    height: 40px;
    font-size: var(--text-xl);
  }

  .step-content {
    padding: var(--space-6);
  }

  .step-title {
    font-size: var(--text-xl);
  }
}

/* ==========================================================================
   CASE STUDIES SECTION
   3-column grid (desktop), 1-column (mobile)
   Cards: industry badge, problem, solution, 4 metrics each
   ========================================================================== */

.case-studies-section {
  padding: var(--space-32) 0;
  background-color: var(--bg-primary);
}

.case-studies-section .section-header {
  margin-bottom: var(--space-12);
}

.case-studies-section .section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.case-study-card {
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.case-study-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-600);
  box-shadow: var(--shadow-md);
}

.industry-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-primary-900);
  color: var(--color-primary-400);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
}

.case-problem,
.case-solution {
  border-bottom: 1px solid var(--border-primary);
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-6);
}

.case-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.case-text {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
}

.case-results-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.case-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.result-metric {
  text-align: center;
  padding: var(--space-3);
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
}

.result-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-1);
}

.result-value {
  display: block;
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-success-500);
  margin-bottom: var(--space-1);
}

.result-desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Case Studies responsive: Tablet */
@media (max-width: 1024px) {
  .case-studies-section {
    padding: var(--space-16) 0;
  }

  .case-studies-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* Case Studies responsive: Mobile */
@media (max-width: 768px) {
  .case-studies-section {
    padding: var(--space-12) 0;
  }

  .case-studies-section .section-header {
    margin-bottom: var(--space-8);
  }

  .case-results {
    grid-template-columns: 1fr;
  }

  .case-study-card {
    padding: var(--space-6);
  }
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */

.faq-section {
  padding: var(--space-16) 0;
  background-color: var(--bg-primary);
}

.faq-section .section-header {
  margin-bottom: var(--space-12);
}

.faq-section .section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.faq-container {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

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

.faq-details {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base);
}

.faq-details:hover {
  border-color: var(--border-secondary);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-base);
}

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

.faq-question::after {
  content: "\25BC";
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: var(--space-4);
}

.faq-details[open] .faq-question::after {
  transform: rotate(180deg);
}

.faq-question:hover {
  color: var(--color-primary-400);
}

.faq-question:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: -2px;
  border-radius: var(--radius-lg);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  font-size: var(--text-base);
}

.faq-answer a {
  color: var(--color-primary-400);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.faq-answer a:hover {
  color: var(--color-primary-300);
}

/* FAQ Responsive */
@media (max-width: 767px) {
  .faq-section {
    padding: var(--space-12) 0;
  }

  .faq-section .section-header {
    margin-bottom: var(--space-8);
  }

  .faq-question {
    padding: var(--space-4);
    font-size: var(--text-base);
  }

  .faq-answer {
    padding: 0 var(--space-4) var(--space-4);
  }
}

/* ==========================================================================
   CALCULATOR SECTION
   ========================================================================== */

.calculator-section {
  padding: var(--space-16) 0;
  background-color: var(--bg-secondary);
}

.calculator-section .section-header {
  margin-bottom: var(--space-10);
}

.calculator-section .section-header h2 {
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-400) 0%, var(--color-primary-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.calculator-card {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-8);
  background: linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  border: 2px solid var(--color-primary-600);
  border-radius: var(--radius-xl);
  box-shadow: 0 0 30px rgb(99 102 241 / 0.15);
}

/* Calculator Progress Bar */
.progress-bar {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding: 0 var(--space-4);
  position: relative;
}

/* Connector line between progress steps */
.progress-bar::before {
  content: "";
  position: absolute;
  top: 20px;
  left: calc(var(--space-4) + 20px);
  right: calc(var(--space-4) + 20px);
  height: 2px;
  background-color: var(--border-secondary);
  z-index: 0;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  z-index: 1;
}

.progress-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--bg-elevated);
  border: 2px solid var(--border-secondary);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  transition: all var(--transition-base);
}

.progress-circle.active {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-500);
  color: var(--text-primary);
  box-shadow: 0 0 15px rgb(99 102 241 / 0.4);
}

.progress-circle.completed {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: var(--text-primary);
}

.progress-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Calculator Steps */
.step {
  display: none;
}

.step.active {
  display: block;
}

.step h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.step textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  resize: vertical;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.step textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.2);
}

.step textarea::placeholder {
  color: var(--text-muted);
}

/* Example Pills */
.examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
  align-items: center;
}

.examples-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.example-pill {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background-color var(--transition-base), color var(--transition-base);
}

.example-pill:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-500);
  background-color: var(--color-primary-600);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

/* Rate Input */
.rate-input-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.rate-input-group input {
  width: 120px;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
}

.rate-input-group input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.2);
}

.currency,
.unit {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Slider */
.slider {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background-color: var(--bg-elevated);
  border-radius: var(--radius-full);
  outline: none;
  margin-bottom: var(--space-2);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-500);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.slider::-webkit-slider-thumb:hover {
  background-color: var(--color-primary-400);
}

.slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-500);
  cursor: pointer;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Radio Group */
.radio-group {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.radio-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.radio-option:hover {
  border-color: var(--border-secondary);
}

.radio-option.selected {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-500);
  color: var(--text-primary);
}

.radio-icon {
  display: none;
}

.radio-text {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

/* Hours Input */
.hours-input-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.hours-input-group label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.hours-input-group input {
  width: 80px;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
}

.hours-input-group input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.2);
}

/* Navigation Buttons */
.nav-buttons {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.btn-back,
.btn-next {
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 44px;
}

.btn-back {
  background-color: transparent;
  border: 1px solid var(--border-secondary);
  color: var(--text-secondary);
}

.btn-back:hover {
  background-color: var(--bg-elevated);
  border-color: var(--border-primary);
  color: var(--text-primary);
}

.btn-next {
  flex: 1;
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  border: none;
  color: var(--text-primary);
}

.btn-next:hover {
  background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-accent-600) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Results Card */
.results-card {
  max-width: 600px;
  margin: var(--space-8) auto 0;
  padding: var(--space-8);
  background: linear-gradient(180deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  border: 2px solid var(--color-success-600);
  border-radius: var(--radius-xl);
  box-shadow: 0 0 30px rgb(34 197 94 / 0.15);
}

.results-card h3 {
  text-align: center;
  margin-bottom: var(--space-6);
}

.feasibility-section {
  text-align: center;
  margin-bottom: var(--space-6);
}

.feasibility {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: rgb(34 197 94 / 0.2);
  border-radius: var(--radius-full);
  color: var(--color-success);
  font-weight: var(--font-medium);
}

.feasibility-icon::before {
  content: "✓";
}

.savings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.savings-item {
  padding: var(--space-4);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  text-align: center;
}

.savings-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.savings-percentage,
.new-cost,
.monthly-savings,
.yearly-savings {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-400);
}

/* Pricing Section */
.pricing-section {
  margin-bottom: var(--space-6);
}

.pricing-section h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}

.pricing-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.pricing-card-saas,
.pricing-card-onetime {
  padding: var(--space-4);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.pricing-card-saas:hover,
.pricing-card-onetime:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-md);
}

/* Pricing features list */
.pricing-features {
  margin-top: var(--space-4);
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.pricing-features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: var(--font-bold);
}

.pricing-reasoning {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}

.pricing-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.pricing-value {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

/* ROI Section */
.roi-section {
  margin-bottom: var(--space-6);
}

.roi-section h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}

.roi-bar {
  height: 12px;
  background-color: var(--bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.roi-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-600) 0%, var(--color-primary-400) 100%);
  border-radius: var(--radius-full);
  transition: width 0.5s ease-out;
}

.roi-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Contact Section in Results */
.results-card .contact-section {
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-primary);
}

.results-card .contact-section h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}

.contact-form .form-group {
  margin-bottom: var(--space-4);
}

.contact-form label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form input[type="tel"] {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.contact-form input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.2);
}

.contact-form input::placeholder {
  color: var(--text-muted);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary-500);
}

.checkbox-group label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: 0;
}

.btn-submit {
  width: 100%;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  background-color: var(--color-primary-600);
  border: none;
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color var(--transition-base);
  min-height: 44px;
}

.btn-submit:hover {
  background-color: var(--color-primary-500);
}

/* Results card section animations */
.results-card .feasibility-section,
.results-card .savings-grid,
.results-card .pricing-section,
.results-card .roi-section,
.results-card .contact-section {
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

/* Celebration state for excellent ROI */
.results-card.celebration .roi-section {
  animation: pulse-glow 2s ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 rgba(59, 130, 246, 0);
  }
  50% {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
  }
}

/* Confetti canvas positioning */
canvas.confetti-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* Loading state for calculator */
.calculator-card.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.calculator-card.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-secondary);
  border-top-color: var(--color-primary-500);
  border-radius: 50%;
  animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Feasibility badges - API response styling */
.feasibility.feasible-yes {
  background-color: rgb(34 197 94 / 0.2);
  color: var(--color-success);
}

.feasibility.feasible-no {
  background-color: rgb(245 158 11 / 0.2);
  color: var(--color-warning);
}

/* API warning banner */
.api-warning {
  background: rgb(245 158 11 / 0.15);
  border: 1px solid var(--color-warning);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  color: var(--color-warning);
  font-size: var(--text-sm);
  text-align: center;
}

.api-warning::before {
  content: '⚠️ ';
}

/* Screen reader only utility (if not already defined) */
.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;
}

/* Respect reduced motion preferences for animations */
@media (prefers-reduced-motion: reduce) {
  .results-card .feasibility-section,
  .results-card .savings-grid,
  .results-card .pricing-section,
  .results-card .roi-section,
  .results-card .contact-section {
    transition: none;
  }

  .results-card.celebration .roi-section {
    animation: none;
  }

  .roi-fill {
    transition: none !important;
  }
}

/* ==========================================================================
   ACCESSIBILITY ENHANCEMENTS
   WCAG 2.1 AA Compliance: Focus States, Touch Targets, Validation
   ========================================================================== */

/* Enhanced Focus Visible Styles - 3:1 contrast ratio */
.example-pill:focus-visible {
  outline: 3px solid var(--color-primary-400);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgb(99 102 241 / 0.25);
}

.radio-option:focus-visible {
  outline: 3px solid var(--color-primary-400);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgb(99 102 241 / 0.25);
}

.btn-back:focus-visible,
.btn-next:focus-visible,
.btn-submit:focus-visible {
  outline: 3px solid var(--color-primary-400);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgb(99 102 241 / 0.25);
}

/* Slider focus state */
.slider:focus-visible {
  outline: 3px solid var(--color-primary-400);
  outline-offset: 2px;
}

.slider:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgb(99 102 241 / 0.4);
}

.slider:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 4px rgb(99 102 241 / 0.4);
}

/* Touch Target Improvements - 44px minimum */
.example-pill {
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-3) var(--space-4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.radio-option {
  min-height: 44px;
}

/* Larger slider thumb for better touch accessibility */
.slider::-webkit-slider-thumb {
  width: 32px;
  height: 32px;
}

.slider::-moz-range-thumb {
  width: 32px;
  height: 32px;
}

/* Checkbox touch target improvement */
.checkbox-group {
  min-height: 44px;
  padding: var(--space-2) 0;
}

.checkbox-group input[type="checkbox"] {
  width: 24px;
  height: 24px;
  margin-top: 0;
  cursor: pointer;
}

.checkbox-group label {
  cursor: pointer;
  padding: var(--space-2) 0;
}

/* Input Hint Styles */
.input-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Validation Error Styles */
.error-message {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
  min-height: 1.25em;
}

.error-message:empty {
  display: none;
}

/* Form Group Error State */
.form-group.error input,
.form-group.error textarea {
  border-color: var(--color-error);
  background-color: rgb(239 68 68 / 0.05);
}

.form-group.error input:focus,
.form-group.error textarea:focus {
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.2);
}

/* Form Group Success State */
.form-group.success input,
.form-group.success textarea {
  border-color: var(--color-success);
}

.form-group.success input:focus,
.form-group.success textarea:focus {
  box-shadow: 0 0 0 3px rgb(34 197 94 / 0.2);
}

/* Checkbox Error State */
.checkbox-group.error {
  color: var(--color-error);
}

.checkbox-group.error label {
  color: var(--color-error);
}

/* Required Field Indicator */
.required {
  color: var(--color-error);
  font-weight: var(--font-bold);
}

/* Keyboard-specific focus styling (distinct from mouse click) */
.example-pill.keyboard-focus,
.radio-option.keyboard-focus {
  outline: 3px solid var(--color-primary-400);
  outline-offset: 3px;
}

/* High contrast focus for accessibility */
@media (prefers-contrast: more) {
  .example-pill:focus-visible,
  .radio-option:focus-visible,
  .btn-back:focus-visible,
  .btn-next:focus-visible,
  .btn-submit:focus-visible {
    outline: 4px solid currentColor;
    outline-offset: 3px;
  }
}

/* Feasibility badge variants */
.feasibility.feasibility-high {
  background-color: rgb(34 197 94 / 0.2);
  color: var(--color-success);
}

.feasibility.feasibility-medium {
  background-color: rgb(245 158 11 / 0.2);
  color: var(--color-warning);
}

.feasibility.feasibility-low {
  background-color: rgb(239 68 68 / 0.2);
  color: var(--color-error);
}

/* ROI message variants */
.roi-label.roi-excellent {
  color: var(--color-success);
  font-weight: var(--font-semibold);
}

.roi-label.roi-moderate {
  color: var(--color-warning);
}

/* Current cost section styling */
.current-cost-section {
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.current-cost-section h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.current-cost-breakdown {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Optional support text styling */
.optional-support {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}

/* Trust signals in results */
.trust-signals {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-primary);
}

.trust-signal-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.trust-icon {
  color: var(--color-success);
  font-weight: var(--font-bold);
}

/* ==========================================================================
   CONTACT SECTION
   Two-column layout: form (1.5fr) + contact info sidebar (1fr)
   ========================================================================== */

#contact.contact-section {
  padding: var(--space-32) 0;
  background-color: var(--bg-secondary);
}

#contact.contact-section .section-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
}

#contact.contact-section .section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-16);
  line-height: var(--leading-relaxed);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* --- Contact Form Card --- */
.contact-form-wrapper {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

#contact .contact-form .form-group {
  margin-bottom: var(--space-6);
}

#contact .contact-form label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

#contact .contact-form label .required {
  color: var(--color-error);
  margin-left: var(--space-1);
}

#contact .contact-form input[type="text"],
#contact .contact-form input[type="email"],
#contact .contact-form input[type="tel"],
#contact .contact-form textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

#contact .contact-form input::placeholder,
#contact .contact-form textarea::placeholder {
  color: var(--text-muted);
}

#contact .contact-form input:focus,
#contact .contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(99 102 241 / 0.2);
}

#contact .contact-form textarea {
  resize: vertical;
}

/* Validation: error state */
#contact .form-group.has-error input,
#contact .form-group.has-error textarea {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.15);
}

#contact .form-group.has-error .checkbox-group input[type="checkbox"] {
  outline: 2px solid var(--color-error);
  outline-offset: 2px;
}

#contact .error-message {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-2);
}

#contact .form-group.has-error .error-message {
  display: block;
}

/* Validation: success state */
#contact .form-group.has-success input,
#contact .form-group.has-success textarea {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgb(34 197 94 / 0.15);
}

#contact .success-indicator {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-success);
  margin-top: var(--space-2);
}

#contact .form-group.has-success .success-indicator {
  display: block;
}

/* Disabled state */
#contact .contact-form input:disabled,
#contact .contact-form textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Checkbox */
#contact .checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

#contact .checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-primary-500);
  flex-shrink: 0;
  cursor: pointer;
}

#contact .checkbox-group label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: 0;
  cursor: pointer;
}

#contact .checkbox-group a {
  color: var(--color-primary-400);
  text-decoration: underline;
}

/* Submit button */
#contact .btn-submit {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  background-color: var(--color-primary-600);
  border: none;
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-base);
  min-height: 48px;
  margin-top: var(--space-4);
}

#contact .btn-submit:hover {
  background-color: var(--color-primary-500);
}

#contact .btn-submit:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

#contact .btn-submit:active {
  transform: scale(0.98);
}

#contact .btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --- Contact Info Sidebar --- */
.contact-info-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
}

.contact-info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary-900);
  border-radius: var(--radius-lg);
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.contact-info-details h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.contact-info-details p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.contact-info-details a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.contact-info-details a:hover {
  color: var(--color-primary-400);
}

/* Trust signals - sidebar variant */
.trust-signals {
  padding: var(--space-6);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
}

.trust-signals h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
}

.trust-signals-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.trust-signals-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.trust-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: rgb(34 197 94 / 0.15);
  border-radius: var(--radius-full);
  color: var(--color-success);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

/* Trust signals - below-contact horizontal variant */
.trust-signals.trust-signals--horizontal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-8);
  margin-top: var(--space-12);
  border-top: 1px solid var(--border-primary);
  background-color: transparent;
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-bottom: none;
}

.trust-signal-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.trust-signal-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: rgb(34 197 94 / 0.15);
  border-radius: var(--radius-full);
  color: var(--color-success);
  font-size: var(--text-base);
  flex-shrink: 0;
}

/* Contact section responsive */
@media (max-width: 768px) {
  #contact.contact-section {
    padding: var(--space-16) 0;
  }

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

  .contact-form-wrapper {
    padding: var(--space-6);
  }

  #contact.contact-section .section-title {
    font-size: var(--text-3xl);
  }

  #contact.contact-section .section-subtitle {
    margin-bottom: var(--space-8);
  }
}

/* ==========================================================================
   SECTION HEADER (common pattern)
   ========================================================================== */

.section-header h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

.hidden {
  display: none !important;
}

/* ==========================================================================
   WHY US RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet (640px+) */
@media (min-width: 640px) {
  .why-us-section {
    padding: var(--space-20) 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .industries-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 800px;
  }

  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet calculator-specific adjustments (640-1023px) */
@media (min-width: 640px) and (max-width: 1023px) {
  .calculator-card {
    padding: var(--space-6);
  }

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

  .progress-circle {
    width: 36px;
    height: 36px;
    font-size: var(--text-base);
  }

  .progress-bar::before {
    top: 18px;
  }

  .savings-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-options {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile-specific adjustments */
@media (max-width: 639px) {
  .why-us-section {
    padding: var(--space-12) 0;
  }

  .why-us-section .section-header {
    margin-bottom: var(--space-8);
  }

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

  .stat-number {
    font-size: var(--text-3xl);
  }

  .tech-stack {
    flex-direction: column;
    align-items: center;
  }

  .tech-badge {
    width: 100%;
    max-width: 200px;
    justify-content: center;
  }

  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  /* Calculator mobile-specific styles */
  .calculator-card {
    padding: var(--space-4);
  }

  .progress-bar {
    padding: 0 var(--space-2);
    margin-bottom: var(--space-6);
  }

  .progress-bar::before {
    left: calc(var(--space-2) + 16px);
    right: calc(var(--space-2) + 16px);
    top: 16px;
  }

  .progress-circle {
    width: 32px;
    height: 32px;
    font-size: var(--text-sm);
  }

  .progress-label {
    font-size: 10px;
  }

  .radio-group {
    flex-direction: column;
  }

  .radio-option {
    min-height: 44px;
  }

  .example-pill {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

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

  .pricing-options {
    grid-template-columns: 1fr;
  }

  .results-card {
    padding: var(--space-4);
  }
}

/* ==========================================================================
   ABOUT US RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet (640px+) */
@media (min-width: 640px) {
  .about-us-section {
    padding: var(--space-20) 0;
  }

  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Mobile-specific adjustments */
@media (max-width: 639px) {
  .about-us-section {
    padding: var(--space-12) 0;
  }

  .about-us-section .section-header {
    margin-bottom: var(--space-8);
  }

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

  .about-intro p {
    font-size: var(--text-base);
  }

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

  .expertise-grid,
  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .team-photo-placeholder {
    aspect-ratio: 4 / 3;
  }

  .team-photo-wrapper {
    margin-bottom: var(--space-8);
  }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
  body {
    background: white;
    color: black;
  }

  .site-header,
  .site-footer,
  footer {
    display: none;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}