/* ========================================
   CSS Variables (Design Tokens)
======================================== */
:root {
  --background: #FFFFFF;
  --foreground: #111111;
  --primary: #C41E3A;
  --primary-foreground: #FFFFFF;
  --secondary: #F7F7F7;
  --muted-foreground: #666666;
  --border: #E5E5E5;
  --radius: 0.75rem;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

input, textarea {
  font-family: inherit;
}

/* ========================================
   Utility Classes
======================================== */
.container {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

.section {
  padding: 6rem 0;
}

@media (min-width: 1024px) {
  .section {
    padding: 8rem 0;
  }
}

.section-secondary {
  background-color: var(--secondary);
}

.section-title {
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
  margin-bottom: 1rem;
}

@media (min-width: 1024px) {
  .section-title {
    font-size: 3.75rem;
  }
}

.section-subtitle {
  font-size: 1rem;
  color: var(--muted-foreground);
}

@media (min-width: 1024px) {
  .section-subtitle {
    font-size: 1.125rem;
  }
}

.section-header {
  margin-bottom: 5rem;
}

.section-header-split {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 1024px) {
  .section-header-split {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: 4rem;
  }
  
  .section-header-split .section-title {
    max-width: 24rem;
  }
  
  .section-header-split .section-subtitle {
    max-width: 36rem;
    padding-top: 0.5rem;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-full {
  width: 100%;
  padding: 0.75rem 1.25rem;
}

.bullet {
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.highlight {
  color: var(--primary);
  font-weight: 700;
}

.link-underline {
  font-size: 0.875rem;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.link-underline:hover {
  color: var(--muted-foreground);
}

/* ========================================
   Header
======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: var(--background);
  border-bottom: 1px solid var(--border);
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  max-width: 1152px;
  margin: 0 auto;
}

@media (min-width: 1024px) {
  .header-nav {
    padding: 1.25rem 2rem;
  }
}

.logo {
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.mobile-menu-btn {
  display: block;
  color: var(--foreground);
}

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

.nav-links {
  display: none;
  align-items: center;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--foreground);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 50;
}

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

@media (min-width: 1024px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(17, 17, 17, 0.1);
}

.mobile-menu-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 24rem;
  background-color: var(--background);
  border-left: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu-close {
  color: var(--foreground);
}

.mobile-menu-links {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-size: 1.125rem;
  color: var(--foreground);
}

.mobile-cta {
  margin-top: 1rem;
  text-align: center;
  padding: 0.75rem 1.25rem;
}

/* ========================================
   Hero Section
======================================== */
.hero {
  background-color: var(--background);
  padding-top: 8rem;
  padding-bottom: 6rem;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .hero {
    padding-top: 11rem;
    padding-bottom: 8rem;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

@media (min-width: 1024px) {
  .hero-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
  }
}

.hero-text {
  max-width: 36rem;
  flex-shrink: 0;
}

.hero-title {
  font-size: 2.25rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 3rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 3.75rem;
  }
}

.hero-title-bold {
  display: block;
  font-weight: 600;
}

.hero-title-light {
  display: block;
  font-weight: 400;
}

.hero-subtitle {
  margin-top: 2rem;
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

.hero-stats {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.hero-stats li {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.stat-highlight {
  color: var(--primary);
  font-weight: 500;
}

.hero-cta {
  margin-top: 2.5rem;
}

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

@media (min-width: 1024px) {
  .hero-image {
    justify-content: flex-end;
    margin-right: -6rem;
  }
}

@media (min-width: 1280px) {
  .hero-image {
    margin-right: -8rem;
  }
}

.hero-image img {
  width: 100%;
  max-width: 500px;
}

@media (min-width: 1024px) {
  .hero-image img {
    max-width: 580px;
  }
}

@media (min-width: 1280px) {
  .hero-image img {
    max-width: 650px;
  }
}

/* ========================================
   Services Section
======================================== */
.services-grid {
  display: grid;
  gap: 2rem;
}

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

.service-card {
  background-color: var(--background);
  padding: 2rem;
  border-radius: var(--radius);
}

@media (min-width: 1024px) {
  .service-card {
    padding: 2.5rem;
  }
}

.service-accent {
  width: 2rem;
  height: 2px;
  background-color: var(--primary);
  margin-bottom: 1.25rem;
}

.service-title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.service-items {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-items li {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* ========================================
   Pricing Section
======================================== */
.pricing-grid {
  display: grid;
  gap: 2rem;
}

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

.pricing-card {
  background-color: var(--secondary);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.pricing-image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background-color: #e5e5e5;
  overflow: hidden;
}

.pricing-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.pricing-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

@media (min-width: 1024px) {
  .pricing-content {
    padding: 2.5rem;
  }
}

.pricing-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.pricing-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.pricing-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-price {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.875rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.pricing-cta {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.125rem;
  width: 100%;
}

.pricing-cta:hover {
  color: var(--primary);
}

/* ========================================
   Platforms Section
======================================== */
.section-platforms {
  padding-top: 0.5rem;
  padding-bottom: 4rem;
}

@media (min-width: 1024px) {
  .section-platforms {
    padding-top: 1rem;
    padding-bottom: 5rem;
  }
}

.platforms-title {
  text-align: center;
  font-size: 1rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 3rem;
}

.platforms-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 3rem;
}

@media (min-width: 1024px) {
  .platforms-grid {
    gap: 4rem;
  }
}

.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.platform-item img {
  width: 4rem;
  height: 4rem;
  object-fit: contain;
}

@media (min-width: 1024px) {
  .platform-item img {
    width: 5rem;
    height: 5rem;
  }
}

.platform-item p {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-align: center;
}

/* ========================================
   Case Studies Section
======================================== */
.cases-grid {
  display: grid;
  gap: 2rem;
  margin-top: 4rem;
}

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

.case-card {
  background-color: var(--background);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

@media (min-width: 1024px) {
  .case-card {
    flex-direction: row;
  }
}

.case-content {
  padding: 2rem;
  flex: 1;
  min-width: 0;
}

@media (min-width: 1024px) {
  .case-content {
    padding: 2.5rem;
  }
}

.case-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.case-metrics {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.case-metrics li {
  font-size: 0.875rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.metric-value {
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.metric-label {
  color: var(--muted-foreground);
}

.case-description {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.case-image {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  flex-shrink: 0;
  padding: 1rem;
  width: 9rem;
  background-color: var(--background);
}

@media (min-width: 1024px) {
  .case-image {
    width: 10rem;
    padding-top: 5.75rem;
    padding-bottom: 2.5rem;
  }
}

.case-image img {
  width: 100%;
  max-height: 13rem;
  object-fit: contain;
  border-radius: 0.5rem;
}

/* ========================================
   About Section
======================================== */
.about-header {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-title {
  text-align: center;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.about-accent {
  width: 1.5rem;
  height: 1px;
  background-color: var(--primary);
  margin-bottom: 3rem;
}

@media (min-width: 1024px) {
  .about-accent {
    margin-bottom: 4rem;
  }
}

.about-content {
  max-width: 50rem;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-content p {
  font-size: 1rem;
  line-height: 1.6;
}

/* ========================================
   Testimonials Section
======================================== */
.testimonials-grid {
  display: grid;
  gap: 3rem;
  margin-top: 4rem;
}

@media (min-width: 768px) {
  .testimonials-grid {
    gap: 4rem;
  }
}

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

.testimonial {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.testimonial blockquote {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
}

.testimonial-footer {
  margin-top: auto;
  padding-top: 1.5rem;
}

.testimonial-accent {
  width: 1.5rem;
  height: 1px;
  background-color: var(--primary);
  margin-bottom: 1rem;
}

.testimonial-author {
  font-size: 0.875rem;
  font-weight: 600;
}

.testimonial-company {
  font-size: 0.75rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* ========================================
   Contact Section
======================================== */
#contact.section {
  padding: 5rem 0;
}

@media (min-width: 1024px) {
  #contact.section {
    padding: 6rem 0;
  }
}

.contact-grid {
  display: grid;
  gap: 4rem;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
  }
}

.contact-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.contact-subtitle {
  font-size: 1rem;
  color: var(--muted-foreground);
  line-height: 1.6;
  max-width: 32rem;
}

@media (min-width: 1024px) {
  .contact-subtitle {
    font-size: 1.125rem;
  }
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.contact-icon {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.25rem;
  width: 18px;
  height: 18px;
}

.contact-item p,
.contact-item a {
  font-size: 1rem;
}

@media (min-width: 1024px) {
  .contact-item p,
  .contact-item a {
    font-size: 1.125rem;
  }
}

.contact-item a {
  transition: color 0.2s ease;
}

.contact-item a:hover {
  color: var(--primary);
}

@media (min-width: 1024px) {
  .contact-cta {
    justify-self: end;
    padding-top: 4.5rem;
  }
}

.contact-cta-buttons {
  margin-top: 2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  background-color: var(--background);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--foreground);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted-foreground);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--foreground);
}

.form-group textarea {
  resize: none;
}

/* ========================================
   Footer
======================================== */
.footer {
  background-color: var(--foreground);
  color: var(--background);
  padding: 4rem 0;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .footer-container {
    padding: 0 2rem;
  }
}

.footer-grid {
  display: grid;
  gap: 3rem 3.5rem;
  grid-template-columns: 1fr;
}

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
  }
}

.footer-logo {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.footer-description {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
  max-width: 16.25rem;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links li,
.footer-links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--background);
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Modals
======================================== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
}

.modal-container {
  position: relative;
  background-color: var(--background);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  color: var(--muted-foreground);
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--foreground);
}

.modal-content {
  padding: 2rem;
}

@media (min-width: 1024px) {
  .modal-content {
    padding: 3rem;
  }
}

.modal-option {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.modal-title {
  font-size: 1.875rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.modal-tagline {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.modal-price {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 2rem;
}

.modal-intro {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.modal-divider {
  border-top: 1px solid var(--border);
  margin-bottom: 2rem;
}

.modal-section-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.modal-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.modal-list li {
  font-size: 0.875rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.modal-expect {
  background-color: var(--secondary);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.modal-expect-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.modal-expect-headline {
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.modal-expect-text {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.modal-cta {
  margin-top: 2rem;
}

/* Body scroll lock when modal is open */
body.modal-open {
  overflow: hidden;
}