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

:root {
  --bg: #0a0a0f;
  --card: #12121a;
  --card-border: #1e1e2e;
  --text: #e0e0e0;
  --text-muted: #888;
  --accent: #00d4ff;
  --accent2: #7c3aed;
  --glow: 0 0 20px rgba(0, 212, 255, 0.3);
  --glow-strong: 0 0 30px rgba(0, 212, 255, 0.5);
  --gradient: linear-gradient(135deg, var(--accent), var(--accent2));
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 1.15rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--accent2);
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ===== Page Transition ===== */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  opacity: 1;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.page-transition.done {
  opacity: 0;
}

/* ===== Language Switcher ===== */
span[data-lang="ru"] {
  display: none;
}

html[lang="ru"] span[data-lang="ru"] {
  display: inline;
}

html[lang="ru"] span[data-lang="uz"] {
  display: none;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: 24px;
  font-size: 0.85rem;
  font-weight: 600;
}

.lang-switch button {
  background: none;
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  padding: 4px 10px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.lang-switch button:first-child {
  border-radius: 6px 0 0 6px;
  border-right: none;
}

.lang-switch button:last-child {
  border-radius: 0 6px 6px 0;
}

.lang-switch button.active {
  background: var(--gradient);
  color: #fff;
  border-color: var(--accent);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  padding: 0 20px;
  transition: background 0.4s, border-color 0.4s, box-shadow 0.4s;
}

.header.scrolled {
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--card-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Main ===== */
main {
  flex: 1;
  padding-top: 64px;
}

section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

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

/* ===== Hero ===== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 64px);
  padding: 60px 20px;
  position: relative;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero > *:not(#hero-canvas) {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeInDown 0.8s ease 0.1s both;
}

.hero h1 .gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 36px;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInDown 0.8s ease 0.3s both;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-strong);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
  color: var(--accent);
}

/* ===== About Section ===== */
.about-section {
  border-top: 1px solid var(--card-border);
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
}

.about-content .lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.about-list li {
  padding-left: 28px;
  position: relative;
  color: var(--text);
  font-size: 1rem;
}

.about-list li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.about-statement {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  padding-top: 16px;
  border-top: 1px solid var(--card-border);
}

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

/* ===== Stats Section ===== */
.stats-section {
  border-top: 1px solid var(--card-border);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== Glow Card (gradient border on hover) ===== */
.glow-card {
  position: relative;
  background: var(--card);
  border-radius: 16px;
  overflow: hidden;
}

.glow-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, transparent, transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: background 0.5s;
  pointer-events: none;
}

.glow-card:hover::before {
  background: linear-gradient(135deg, var(--accent), var(--accent2), var(--accent));
}

.glow-card:hover {
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.15), 0 0 60px rgba(124, 58, 237, 0.1);
}

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

.service-card {
  border: 1px solid var(--card-border);
  padding: 32px 28px;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  opacity: 0;
  transform: translateY(30px);
}

.service-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s, border-color 0.3s;
}

.service-card:hover {
  transform: translateY(-6px);
}

.service-card .icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.93rem;
  margin-bottom: 16px;
}

.service-card .price {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.btn-card {
  padding: 10px 24px;
  font-size: 0.9rem;
  text-align: center;
}

.btn-small {
  padding: 6px 16px;
  font-size: 0.82rem;
}

/* ===== Case Studies ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.case-card {
  border: 1px solid var(--card-border);
  padding: 32px 28px;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  opacity: 0;
  transform: translateY(30px);
}

.case-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s, border-color 0.3s;
}

.case-card:hover {
  transform: translateY(-6px);
}

.case-card .case-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.case-card h3 {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.case-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.case-meta-item {
  display: flex;
  gap: 10px;
  font-size: 0.93rem;
}

.case-meta-label {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  min-width: 80px;
}

.case-meta-value {
  color: var(--text-muted);
}

.case-result {
  padding-top: 16px;
  border-top: 1px solid var(--card-border);
  font-weight: 600;
  color: var(--accent);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.case-links {
  display: flex;
  gap: 10px;
}

/* ===== Process Section ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.process-step {
  text-align: center;
  padding: 24px 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  transition: transform 0.3s, border-color 0.3s;
  opacity: 0;
  transform: translateY(30px);
}

.process-step.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s;
}

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

.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.process-step h4 {
  font-size: 0.9rem;
  font-weight: 600;
}

/* ===== Tech Section ===== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.tech-group {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
}

.tech-group h4 {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.tech-group p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  text-align: center;
  background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.03), transparent);
  border-top: 1px solid var(--card-border);
}

.cta-section h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-section p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

/* ===== Contacts ===== */
.contacts-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 14px 18px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .btn {
  align-self: flex-start;
}

.contact-info h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

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

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 0.95rem;
  transition: color 0.3s;
}

.contact-link:hover {
  color: var(--accent);
}

.contact-link .link-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success.show {
  display: block;
}

.form-success .checkmark {
  font-size: 3rem;
  margin-bottom: 16px;
}

.form-success h3 {
  margin-bottom: 8px;
}

.form-success p {
  color: var(--text-muted);
}

/* ===== Form Error ===== */
.form-error {
  display: none;
  color: #ff4d4d;
  background: rgba(255, 77, 77, 0.1);
  border: 1px solid rgba(255, 77, 77, 0.3);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.9rem;
}

.form-error.show {
  display: block;
}

/* ===== Character Counter ===== */
.char-counter {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: -8px;
}

.char-counter.near-limit {
  color: #ff4d4d;
  font-weight: 600;
}

/* ===== Form Labels (visually hidden) ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Tags ===== */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--card-border);
  padding: 32px 20px;
  text-align: center;
}

.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: border-color 0.3s, color 0.3s, box-shadow 0.3s;
}

.social-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow);
}

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

/* ===== Animations ===== */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Focus Visible ===== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .service-card,
  .case-card,
  .process-step {
    opacity: 1;
    transform: none;
  }
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .burger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .lang-switch {
    margin-left: auto;
    margin-right: 12px;
  }

  .contacts-wrapper {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2rem;
  }

  section {
    padding: 60px 0;
  }

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

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-number {
    font-size: 2.2rem;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
  }

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

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

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