/* Layout Styles */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
  min-height: 100vh;
}

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

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.logo img {
  width: auto;
  height: 30px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  transition: color var(--transition-base);
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  height: 24px;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* Hero */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.perspective-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1040px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-black);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-2xl);
  max-width: 873px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text);
}

/* Clients */
.clients {
  padding: var(--space-3xl) 0;
  overflow: hidden;
}

.clients-heading {
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: var(--space-2xl);
}

.clients-wrapper {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.clients-scroll {
  display: flex;
  width: fit-content;
}

.clients-track {
  display: flex;
  align-items: center;
  gap: 4rem;
  padding: var(--space-lg) 0;
  flex-shrink: 0;
}

.clients-track img {
  height: 40px;
  width: auto;
  max-width: 160px;
  min-width: 80px;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity var(--transition-base);
  filter: grayscale(100%) brightness(0);
  flex-shrink: 0;
  margin: 0 2rem;
  display: inline-block;
}

.clients-track img:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* Portfolio */
.portfolio {
  padding: var(--space-3xl) 0;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-black);
  text-align: center;
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #22c55e 0%, #16a34a 100%);
  border-radius: 2px;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text);
}

/* How It Works */
.how-it-works {
  padding: var(--space-3xl) 0;
}

.process-tabs {
  max-width: 1000px;
  margin: var(--space-3xl) auto 0;
}

.tab-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.tab-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xl);
  background: white;
  border: 3px solid var(--color-border);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tab-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(48, 49, 44, 0.05), rgba(48, 49, 44, 0.15));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tab-button:hover::before {
  opacity: 1;
}

.tab-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(48, 49, 44, 0.15);
  border-color: var(--color-primary);
}

.tab-button.active {
  background: linear-gradient(135deg, var(--color-primary), #43464d);
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(48, 49, 44, 0.25), 0 0 40px rgba(48, 49, 44, 0.2);
}

.tab-button.active .tab-number,
.tab-button.active .tab-label {
  color: white;
}

.tab-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-light);
  border-radius: 50%;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.tab-button.active .tab-number {
  background: rgba(255, 255, 255, 0.2);
}

.tab-label {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  transition: color var(--transition-base);
  text-align: center;
}

.tab-content-wrapper {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  min-height: 200px;
  box-shadow: var(--shadow-md);
}

.tab-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

.tab-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.tab-content p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

@media (max-width: 768px) {
  .tab-buttons {
    grid-template-columns: 1fr;
  }

  .tab-button {
    flex-direction: row;
    justify-content: flex-start;
  }
}

/* Why Choose */
.why-choose {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-light);
}

.flip-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  max-width: 1100px;
  margin: var(--space-2xl) auto 0;
}

/* Pricing */
.pricing {
  padding: var(--space-3xl) 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
  max-width: 1200px;
  margin: var(--space-2xl) auto 0;
}

/* FAQ */
.faq {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-light);
}

.faq-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-3xl);
  max-width: 1200px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

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

.footer-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.footer-brand .logo {
  color: white;
  font-size: var(--font-size-2xl);
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.footer-nav a {
  font-weight: var(--font-weight-medium);
  transition: opacity var(--transition-base);
}

.footer-nav a:hover {
  opacity: 0.7;
}

.footer-social {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
}

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

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .faq-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-wrapper {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-nav,
  .footer-social {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

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

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .flip-cards {
    grid-template-columns: 1fr;
  }

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