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

:root {
  --color-bg: #0a0a0a;
  --color-bg-alt: #111111;
  --color-bg-card: #1a1a1a;
  --color-border: #2a2a2a;
  --color-text: #e5e5e5;
  --color-text-muted: #a3a3a3;
  --color-text-heading: #ffffff;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-glow: rgba(59, 130, 246, 0.15);
  --color-secondary: #6366f1;
  --color-accent: #10b981;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.1);
  --transition: 0.3s ease;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

ul {
  list-style: none;
}

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

/* ===================================
   Typography
   =================================== */
.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--color-text-heading);
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

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

.btn-small {
  padding: 12px 24px;
  font-size: 0.95rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  margin-top: 24px;
}

.btn-small:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-heading);
}

.logo span {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--color-text-muted);
}

.nav-links a:hover {
  color: var(--color-text-heading);
}

.nav-cta {
  padding: 10px 20px;
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
}

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

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 999;
  padding: 100px 24px 40px;
}

.mobile-menu.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: center;
}

.mobile-nav-link {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
}

.mobile-nav-cta {
  display: inline-block;
  padding: 16px 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  margin-top: 16px;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, var(--color-primary-glow) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  color: var(--color-text-heading);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-text-muted);
  margin-bottom: 40px;
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-trust {
  margin-top: 60px;
}

.hero-trust p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.hero-logos {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.logo-placeholder {
  padding: 12px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===================================
   Problems Section
   =================================== */
.problems {
  padding: 100px 24px;
  background: var(--color-bg-alt);
}

.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.problem-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
}

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

.problem-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 12px;
}

.problem-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ===================================
   Services Section
   =================================== */
.services {
  padding: 100px 24px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  transition: var(--transition);
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.service-number {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
}

.service-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 16px;
  padding-right: 60px;
}

.service-desc {
  color: var(--color-text-muted);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.service-benefits {
  margin-bottom: 24px;
}

.benefit-item {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.benefit-check {
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.service-stages {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.stage {
  padding: 8px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

/* ===================================
   Advantages Section
   =================================== */
.advantages {
  padding: 100px 24px;
  background: var(--color-bg-alt);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.advantage-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.advantage-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.advantage-metric {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.advantage-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ===================================
   Process Section
   =================================== */
.process {
  padding: 100px 24px;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  position: relative;
}

.process-step {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.process-step:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.process-step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 12px;
}

.process-step p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ===================================
   Cases Section
   =================================== */
.cases {
  padding: 100px 24px;
  background: var(--color-bg-alt);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.case-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.case-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.case-header {
  padding: 32px 32px 24px;
  border-bottom: 1px solid var(--color-border);
}

.case-industry {
  display: inline-block;
  padding: 6px 12px;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.case-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-heading);
}

.case-body {
  padding: 24px 32px 32px;
}

.case-section {
  margin-bottom: 20px;
}

.case-section h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.case-section p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.case-results {
  padding-left: 0;
}

.case-results li {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}

.case-results li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.case-results li strong {
  color: var(--color-text-heading);
}

/* ===================================
   FAQ Section
   =================================== */
.faq {
  padding: 100px 24px;
}

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

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  background: var(--color-bg-card);
  border: none;
  color: var(--color-text-heading);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--color-bg-card);
}

.faq-toggle {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-question[aria-expanded="true"] .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  max-height: 500px;
  padding: 0 24px 24px;
}

.faq-answer p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

/* ===================================
   Final CTA Section
   =================================== */
.final-cta {
  padding: 100px 24px;
  background: var(--color-bg-alt);
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 650px;
  margin: 0 auto 48px;
}

/* Form Wrapper & Loader */
.form-wrapper {
  width: 100%;
  max-width: 650px;
  margin: 0 auto;
  position: relative;
}

.form-loader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: opacity 0.3s ease;
}

.form-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.skeleton-form {
  width: 100%;
  padding: 32px;
}

.skeleton-line {
  background: linear-gradient(90deg, var(--color-border) 25%, #3a3a3a 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-title {
  height: 32px;
  width: 60%;
}

.skeleton-input {
  height: 48px;
}

.skeleton-button {
  height: 48px;
  width: 40%;
  background: var(--color-primary);
  opacity: 0.3;
}

.form-wrapper iframe {
  width: 100%;
  min-height: 600px;
  border: none;
  border-radius: var(--radius-md);
  display: block;
}

/* ===================================
   Footer
   =================================== */
.footer {
  padding: 60px 24px 32px;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text-heading);
  display: inline-block;
  margin-bottom: 16px;
}

.footer-logo span {
  color: var(--color-primary);
}

.footer-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: var(--color-primary);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  color: var(--color-text-muted);
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-legal a:hover {
  color: var(--color-primary);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .cases-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .burger {
    display: flex;
  }
  
  .hero {
    min-height: auto;
    padding: 140px 24px 80px;
  }
  
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .section-title {
    margin-bottom: 40px;
  }
  
  .problems-grid,
  .advantages-grid,
  .process-timeline {
    grid-template-columns: 1fr;
  }
  
  .service-card {
    padding: 32px 24px;
  }
  
  .service-number {
    font-size: 3rem;
    top: 16px;
    right: 24px;
  }
  
  .service-stages {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .stage-arrow {
    transform: rotate(90deg);
  }
  
  .case-header,
  .case-body {
    padding: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-legal {
    justify-content: center;
  }
  
  .form-wrapper iframe {
    min-height: 800px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero-content {
    padding: 0;
  }
  
  .hero-logos {
    flex-direction: column;
    align-items: center;
  }
  
  .logo-placeholder {
    width: 100%;
    text-align: center;
  }
}

/* ===================================
   Animations
   =================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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