/* CSS Variables */
:root {
  --ice-cold: #a0d2eb;
  --freeze-purple: #e5eaf5;
  --medium-purple: #d0bdf4;
  --purple-pain: #8458B3;
  --heavy-purple: #a28089;
  
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --white: #ffffff;
  --black: #000000;
  
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  --container-max: 1200px;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  --transition: all 0.2s ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1rem + 0.2vw, 1.125rem);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--purple-pain);
  color: var(--white);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius);
  z-index: 1000;
  transition: var(--transition);
}

.skip-link:focus {
  top: 6px;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 2rem;
  }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.25rem, 2.25rem + 1.5vw, 3.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.875rem, 1.875rem + 1vw, 2.5rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 1.5rem + 0.5vw, 1.875rem);
  font-weight: 600;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

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

a:hover, a:focus {
  color: var(--heavy-purple);
  text-decoration: underline;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--border-radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  min-height: 48px;
}

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

.btn-primary {
  background: var(--purple-pain);
  color: var(--white);
  border-color: var(--purple-pain);
}

.btn-primary:hover, .btn-primary:focus {
  background: var(--heavy-purple);
  border-color: var(--heavy-purple);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover, .btn-secondary:focus {
  background: var(--purple-pain);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--freeze-purple);
  z-index: 100;
  transition: var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--text-primary);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover, .nav-link:focus {
  color: var(--purple-pain);
  text-decoration: none;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--purple-pain);
}

.nav-cta {
  background: var(--purple-pain);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
}

.nav-cta:hover, .nav-cta:focus {
  background: var(--heavy-purple);
  color: var(--white);
  text-decoration: none;
  transform: translateY(-1px);
}

/* Mobile Navigation */
@media (max-width: 959px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 6rem 2rem 2rem;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    transition: right 0.3s ease-in-out;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-link {
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid var(--freeze-purple);
  }
  
  .nav-cta {
    margin-top: 1rem;
    width: 100%;
    text-align: center;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--freeze-purple) 0%, var(--ice-cold) 100%);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/img/pattern.svg');
  background-size: 100px 100px;
  background-repeat: repeat;
  opacity: 0.1;
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

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

.hero h1 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 1.125rem + 0.5vw, 1.375rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 960px) {
  .hero {
    padding: 6rem 0;
  }
  
  .hero .container {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
  
  .hero-content {
    text-align: left;
  }
  
  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }
  
  .hero-cta {
    flex-direction: row;
    justify-content: flex-start;
    gap: 1.5rem;
  }
}

@media (min-width: 640px) and (max-width: 959px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
    gap: 1.5rem;
  }
}

/* Trust Strip */
.trust-strip {
  background: var(--white);
  padding: 3rem 0;
  border-bottom: 1px solid var(--freeze-purple);
}

.trust-text {
  text-align: center;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.trust-logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 2rem;
  align-items: center;
  justify-items: center;
}

.trust-logos img {
  max-width: 120px;
  height: auto;
  opacity: 0.6;
  filter: grayscale(100%);
  transition: var(--transition);
}

.trust-logos img:hover {
  opacity: 0.8;
  filter: grayscale(50%);
}

@media (min-width: 640px) {
  .trust-logos {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* Services Section */
.services {
  padding: 6rem 0;
  background: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--freeze-purple);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--freeze-purple) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
  z-index: 1;
}

.service-card:hover::before {
  opacity: 1;
}

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

.service-card > * {
  position: relative;
  z-index: 2;
}

.service-icon {
  margin-bottom: 1.5rem;
}

.service-icon img {
  width: 48px;
  height: 48px;
}

.service-card h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.service-card p {
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.service-usps {
  list-style: none;
  margin-bottom: 2rem;
}

.service-usps li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.service-usps li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0.5rem;
  color: var(--purple-pain);
  font-weight: bold;
}

.service-cta {
  display: inline-flex;
  align-items: center;
  color: var(--purple-pain);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.service-cta:hover, .service-cta:focus {
  color: var(--heavy-purple);
  transform: translateX(4px);
}

.service-cta::after {
  content: '→';
  margin-left: 0.5rem;
  transition: var(--transition);
}

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

@media (min-width: 960px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Process Section */
.process {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--freeze-purple) 0%, var(--ice-cold) 100%);
}

.process h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.process-step {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow);
}

.step-number {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--purple-pain);
  color: var(--white);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.125rem;
}

.process-step h3 {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

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

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

@media (min-width: 960px) {
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Cases Section */
.cases {
  padding: 6rem 0;
  background: var(--white);
}

.cases h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--freeze-purple);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

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

.case-metric {
  font-size: 3rem;
  font-weight: 800;
  color: var(--purple-pain);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading);
}

.case-card h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.case-card p {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.case-cta {
  color: var(--purple-pain);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition: var(--transition);
}

.case-cta:hover, .case-cta:focus {
  color: var(--heavy-purple);
}

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

@media (min-width: 960px) {
  .cases-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* FAQ Section */
.faq {
  padding: 6rem 0;
  background: linear-gradient(135deg, var(--freeze-purple) 0%, var(--ice-cold) 100%);
}

.faq h2 {
  text-align: center;
  margin-bottom: 4rem;
}

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

.faq-item {
  background: var(--white);
  border: 1px solid var(--freeze-purple);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--medium-purple);
  box-shadow: var(--shadow);
}

.faq-item summary {
  padding: 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
  position: relative;
  transition: var(--transition);
}

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

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--purple-pain);
  transition: var(--transition);
}

.faq-item[open] summary::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}

.faq-item summary:hover {
  background: var(--freeze-purple);
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  border-top: 1px solid var(--freeze-purple);
}

.faq-answer p {
  margin-bottom: 0;
  line-height: 1.7;
}

/* CTA Banner */
.cta-banner {
  padding: 6rem 0;
  background: var(--purple-pain);
  color: var(--white);
  text-align: center;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.cta-banner .btn-primary {
  background: var(--white);
  color: var(--purple-pain);
  border-color: var(--white);
}

.cta-banner .btn-primary:hover, .cta-banner .btn-primary:focus {
  background: var(--freeze-purple);
  color: var(--purple-pain);
  border-color: var(--freeze-purple);
}

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

.cta-banner .btn-secondary:hover, .cta-banner .btn-secondary:focus {
  background: var(--white);
  color: var(--purple-pain);
}

@media (min-width: 640px) {
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
    gap: 1.5rem;
  }
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand img {
  filter: brightness(0) invert(1);
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-column h4 {
  color: var(--white);
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}

.footer-column a:hover, .footer-column a:focus {
  color: var(--white);
  text-decoration: underline;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-social a:hover, .footer-social a:focus {
  background: var(--purple-pain);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0;
  font-size: 0.875rem;
}

@media (min-width: 960px) {
  .footer-content {
    grid-template-columns: 1fr 2fr 1fr;
    align-items: start;
  }
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--purple-pain);
  color: var(--white);
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 50;
  box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover, .back-to-top:focus {
  background: var(--heavy-purple);
  transform: translateY(-2px);
}

.back-to-top:focus {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

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

/* Focus States */
*:focus {
  outline: 2px solid var(--purple-pain);
  outline-offset: 2px;
}

button:focus, a:focus {
  outline-offset: 4px;
}

/* Print Styles */
@media print {
  .header, .nav, .back-to-top, .cta-banner {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
  
  .service-card, .case-card, .faq-item {
    page-break-inside: avoid;
  }
}