/* ========================================
   CSS Reset & Base Styles
======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Linear/Starlink inspired monochromatic palette */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1a1a1a;
  --bg-card: #111111;

  /* Pure monochrome system */
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-tertiary: #737373;
  --text-muted: #525252;

  /* Accent - minimal color usage */
  --accent-primary: #ffffff;
  --accent-hover: #f5f5f5;
  --accent-subtle: #262626;

  /* Borders */
  --border-primary: #262626;
  --border-secondary: #1a1a1a;
  --border-focus: #ffffff;

  /* Shadows - very subtle */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

  /* Spacing */
  --container-max-width: 1200px;
  --section-padding: 6rem 0;
  --element-padding: 2rem;

  /* Border Radius - minimal, clean */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 4rem;
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ========================================
   Utilities & Components
======================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
}

.section-header {
  margin-bottom: 4rem;
}

/* Button Styles - Linear inspired */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: var(--text-primary);
  color: var(--bg-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: all 0.15s ease;
  border: 1px solid var(--text-primary);
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: transparent;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}

.btn-arrow {
  font-size: 1em;
  transition: transform 0.15s ease;
}

.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow {
  transform: translateX(2px);
}

/* ========================================
   Navigation
======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-primary);
  transition: all 0.2s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--font-size-lg);
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  font-size: 1.25em;
}

.brand-text {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: color 0.15s ease;
  position: relative;
}

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

.nav-link.cta-button {
  padding: 0.5rem 1rem;
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-link.cta-button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 3px;
  cursor: pointer;
}

.nav-mobile span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.2s ease;
}

/* ========================================
   Hero Section
======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: var(--bg-primary);
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-content {
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-weight: 500;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--text-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.hero-title .highlight {
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.5;
  font-weight: 400;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-bottom: 3rem;
  justify-content: center;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  font-weight: 500;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================================
   Services Section
======================================== */

.services {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
  position: relative;
}

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

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  display: block;
}

.service-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.service-card > p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
  font-weight: 400;
}

.service-features {
  list-style: none;
}

.service-features li {
  padding: 0.5rem 0;
  color: var(--text-tertiary);
  position: relative;
  padding-left: 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--text-primary);
  font-weight: 600;
}

/* ========================================
   Case Studies Section
======================================== */

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

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.case-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
  position: relative;
}

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

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.case-industry {
  color: var(--text-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  background: var(--accent-subtle);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
}

.case-country {
  font-size: var(--font-size-lg);
}

.case-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.case-card > p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
  font-style: italic;
  position: relative;
  padding-left: 1rem;
  border-left: 2px solid var(--border-primary);
}

.case-metrics {
  display: flex;
  gap: 2rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.case-author {
  text-align: right;
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.case-author strong {
  color: var(--text-secondary);
}

/* ========================================
   Contact Section
======================================== */

.contact {
  padding: var(--section-padding);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h2 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.6;
  font-size: var(--font-size-lg);
}

.founder-card {
  display: flex;
  gap: 1rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  margin-top: 2rem;
}

.founder-avatar {
  font-size: 2.5rem;
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-subtle);
  border-radius: var(--radius-md);
}

.founder-info h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.founder-info p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: var(--font-size-sm);
}

.founder-stats {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.founder-stats span {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  font-weight: 500;
}

.contact-form-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background: var(--bg-secondary);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-submit {
  margin-top: 1rem;
}

/* ========================================
   Footer
======================================== */

.footer {
  background: var(--bg-primary);
  padding: 3rem 0 1.5rem 0;
  border-top: 1px solid var(--border-primary);
}

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

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 2rem;
}

.footer-brand .brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-brand p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
}

.footer-section h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

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

.footer-section ul li a {
  color: var(--text-tertiary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color 0.15s ease;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-primary);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: 0.5rem;
}

/* ========================================
   Responsive Design
======================================== */

@media (max-width: 1024px) {
  :root {
    --container-max-width: 90%;
    --section-padding: 4rem 0;
  }

  .hero-stats {
    gap: 2rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --font-size-6xl: 3rem;
    --section-padding: 3rem 0;
  }

  .nav-links {
    display: none;
  }

  .nav-mobile {
    display: flex;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

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

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

  .case-metrics {
    flex-direction: column;
    gap: 1rem;
  }

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

  .founder-card {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .nav-container {
    padding: 0.75rem 1rem;
  }

  .hero {
    padding-top: 60px;
  }

  .hero-badge {
    flex-direction: column;
    text-align: center;
    gap: 0.25rem;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .service-card,
  .case-card {
    padding: 1.5rem;
  }
}

/* ========================================
   Accessibility & Performance
======================================== */

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

  .badge-dot {
    animation: none;
  }
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #ffffff;
    --text-secondary: #e5e5e5;
    --text-tertiary: #d4d4d4;
  }
}

/* Print styles */
@media print {
  .nav {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .service-card,
  .case-card {
    border: 1px solid #ccc;
    background: white;
  }
}