/* Base */
:root {
  --bg: #0b0f14;
  --bg-elev: #0f141b;
  --text: #eef2f7;
  --muted: #a8b0bb;
  --primary: #6ea8fe;
  --accent: #7c5cff;
  --success: #10b981;
  --card: #111825;
  --border: #1a2230;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.4);
  --gradient-primary: linear-gradient(135deg, var(--accent), var(--primary));
  --gradient-text: linear-gradient(135deg, var(--accent), var(--primary));
}

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

html, body { 
  height: 100%; 
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background:
    url('assets/it-bg.svg') repeat,
    radial-gradient(1200px 800px at 80% -10%, rgba(124,92,255,0.12), rgba(0,0,0,0) 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(110,168,254,0.1), rgba(0,0,0,0) 55%),
    var(--bg);
  line-height: 1.6;
  background-size: auto, 1200px 800px, 900px 600px, auto;
  animation: bgPan 30s linear infinite;
}

@keyframes bgPan { 
  0% { background-position: 0 0, 80% -10%, -10% 20%, 0 0; } 
  50% { background-position: 48px 48px, 78% -6%, -8% 24%, 0 0; } 
  100% { background-position: 0 0, 80% -10%, -10% 20%, 0 0; } 
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
  padding: 0 20px;
}

a { 
  color: var(--primary); 
  text-decoration: none; 
  transition: all 0.2s ease;
}

a:hover { 
  opacity: 0.8; 
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,15,20,0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  font-weight: 800;
  font-size: 24px;
  letter-spacing: 0.5px;
  color: var(--text);
}

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

.nav { 
  display: flex; 
  gap: 24px; 
  align-items: center; 
}

.nav a { 
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: var(--shadow);
  cursor: pointer;
}

.btn:hover { 
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary { 
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
}

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

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.highlight {
  color: var(--accent);
}

.hero__subtitle {
  font-size: 20px;
  color: var(--muted);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Bot Interface Visual */
.hero__visual {
  position: relative;
}

.bot-interface {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  margin: 0 auto;
}

.bot-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.bot-avatar {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.bot-info {
  flex: 1;
}

.bot-name {
  font-weight: 600;
  color: var(--text);
}

.bot-status {
  font-size: 12px;
  color: var(--success);
}

.bot-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  display: flex;
  max-width: 80%;
}

.bot-message {
  align-self: flex-start;
}

.user-message {
  align-self: flex-end;
}

.message-bubble {
  background: var(--bg-elev);
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.4;
}

.user-message .message-bubble {
  background: var(--gradient-primary);
  color: white;
}

/* Sections */
.section {
  padding: 80px 0;
}

.section__title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text);
}

/* About Section */
.about {
  background: rgba(255,255,255,0.02);
}

.about__text {
  font-size: 18px;
  line-height: 1.7;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  max-width: 600px;
  margin: 0 auto;
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat__label {
  color: var(--muted);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Services Section */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: white;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.service-card p {
  color: var(--muted);
  line-height: 1.6;
}

/* Advantages Section */
.advantages {
  background: rgba(255,255,255,0.02);
}

.advantages__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.advantage {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.advantage__icon {
  width: 24px;
  height: 24px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 2px;
}

.advantage__text {
  line-height: 1.6;
}

.advantage__text strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
}

/* Portfolio Section */
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
  margin-bottom: 40px;
}

.portfolio-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.portfolio__image {
  height: 200px;
  background: var(--bg-elev);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.portfolio__placeholder {
  color: var(--muted);
  font-size: 18px;
  font-weight: 600;
}

.portfolio__content {
  padding: 24px;
}

.portfolio__content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

.portfolio__task,
.portfolio__solution {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.5;
}

.portfolio__task strong,
.portfolio__solution strong {
  color: var(--accent);
}

.portfolio__results {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.result {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.result__icon {
  font-size: 16px;
}

.result__text {
  color: var(--muted);
}

.portfolio__cta {
  text-align: center;
}

/* Technologies Section */
.technologies {
  background: rgba(255,255,255,0.02);
}

.technologies__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.tech-item {
  text-align: center;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.3s ease;
}

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

.tech-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.tech-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.tech-name {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}

/* Related Services */
.related-services {
  margin-top: 30px;
  padding: 20px;
  background: var(--card);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.related-services h3 {
  margin-bottom: 15px;
  color: var(--text);
  font-size: 18px;
}

.service-links {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.service-link {
  display: inline-block;
  padding: 8px 16px;
  background: var(--gradient-primary);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  color: white;
}

/* Blog Section */
.blog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.blog-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.blog-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog__image {
  height: 160px;
  background: var(--bg-elev);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog__placeholder {
  color: var(--muted);
  font-weight: 600;
}

.blog__content {
  padding: 24px;
}

.blog__content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
  line-height: 1.4;
}

.blog__content h3 a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

.blog__content h3 a:hover {
  color: var(--primary);
}

.blog__content p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 16px;
}

.blog__meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--muted);
}

/* CTA Section */
.cta {
  background: var(--gradient-primary);
  color: white;
  text-align: center;
}

.cta__title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta__subtitle {
  font-size: 18px;
  margin-bottom: 40px;
  opacity: 0.9;
}

.contact-form {
  max-width: 500px;
  margin: 0 auto 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  background: rgba(255,255,255,0.1);
  color: white;
  font-size: 16px;
  transition: all 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.7);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.15);
}

.cta__alternatives {
  margin-top: 40px;
}

.cta__alternatives p {
  margin-bottom: 20px;
  opacity: 0.9;
}

.contact-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  color: white;
  text-decoration: none;
  transition: all 0.2s ease;
}

.contact-link:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.contact-icon {
  font-size: 16px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 20px;
  background: var(--bg-elev);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer__brand .logo {
  font-size: 24px;
  margin-bottom: 8px;
}

.footer__brand p {
  color: var(--muted);
  font-size: 14px;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer__section h4 {
  color: var(--text);
  font-size: 16px;
  margin-bottom: 16px;
}

.footer__section a {
  display: block;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

/* Reveal animations */
.reveal { 
  opacity: 0; 
  transform: translateY(20px); 
  transition: opacity 0.6s ease, transform 0.6s ease; 
}

.reveal.visible { 
  opacity: 1; 
  transform: translateY(0); 
}

/* Mobile Navigation */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }
  
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    flex-direction: column;
    gap: 16px;
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
  }
  
  .nav.mobile-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav a:not(.btn) {
    display: block;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
  }
  
  .nav a:last-child {
    border-bottom: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 80px 0 60px;
  }
  
  .hero__content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero__title {
    font-size: 32px;
    line-height: 1.2;
  }
  
  .hero__subtitle {
    font-size: 18px;
  }
  
  .hero__actions {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .btn-large {
    width: 100%;
    max-width: 280px;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section__title {
    font-size: 28px;
  }
  
  .about__stats {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .stat__number {
    font-size: 28px;
  }
  
  .services__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .service-card {
    padding: 24px;
  }
  
  .advantages__list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .advantage {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  
  .portfolio__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .technologies__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .tech-item {
    padding: 16px;
  }
  
  .blog__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer__links {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .contact-links {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  
  .contact-link {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .related-services {
    margin-top: 20px;
    padding: 16px;
  }
  
  .service-links {
    flex-direction: column;
    gap: 10px;
  }
  
  .service-link {
    text-align: center;
    padding: 12px 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
  
  .hero {
    padding: 60px 0 40px;
  }
  
  .hero__title {
    font-size: 24px;
    line-height: 1.3;
  }
  
  .hero__subtitle {
    font-size: 16px;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .section__title {
    font-size: 24px;
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  
  .btn-large {
    width: 100%;
    max-width: 280px;
    padding: 14px 20px;
    font-size: 14px;
  }
  
  .service-card {
    padding: 20px;
  }
  
  .service-card h3 {
    font-size: 18px;
  }
  
  .technologies__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .tech-item {
    padding: 12px;
  }
  
  .tech-icon {
    font-size: 24px;
  }
  
  .tech-name {
    font-size: 11px;
  }
  
  .portfolio__content h3 {
    font-size: 18px;
  }
  
  .blog__content h3 {
    font-size: 16px;
  }
  
  .contact-form {
    padding: 0 10px;
  }
  
  .form-group input,
  .form-group textarea {
    padding: 12px;
    font-size: 14px;
  }
  
  .cta__title {
    font-size: 24px;
  }
  
  .cta__subtitle {
    font-size: 16px;
  }
  
  .related-services {
    padding: 12px;
  }
  
  .related-services h3 {
    font-size: 16px;
  }
  
  .service-link {
    padding: 10px 12px;
    font-size: 13px;
  }
}