/* ============================================
   BATYRMEDIA.RU — VR/AR/IT Media Company
   Production CSS — v1.0
   ============================================ */

/* ----------------------------------------
   1. Custom Properties
   ---------------------------------------- */
:root {
  --nav-height: 72px;
  --bg-primary: #08080e;
  --bg-secondary: #0c0c14;
  --bg-card: rgba(255, 255, 255, 0.03);
  --border-default: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(0, 240, 255, 0.2);
  --cyan: #00f0ff;
  --purple: #b400ff;
  --pink: #ff006a;
  --gradient-main: linear-gradient(135deg, var(--cyan), var(--purple));
  --gradient-secondary: linear-gradient(135deg, var(--purple), var(--pink));
  --text-primary: #f0f0f5;
  --text-secondary: rgba(240, 240, 245, 0.6);
  --text-muted: rgba(240, 240, 245, 0.4);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: 20px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-glow-cyan: 0 0 30px rgba(0, 240, 255, 0.15);
  --shadow-glow-purple: 0 0 30px rgba(180, 0, 255, 0.15);
  --transition-fast: 0.2s ease;
  --transition-medium: 0.35s ease;
  --transition-slow: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
}

/* ----------------------------------------
   2. CSS Reset
   ---------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea {
  font: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

::selection {
  background: rgba(0, 240, 255, 0.25);
  color: #fff;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 240, 255, 0.25);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 240, 255, 0.45);
}

/* ----------------------------------------
   3. Container
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ----------------------------------------
   4. Preloader
   ---------------------------------------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.loader-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.06);
  border-top-color: var(--cyan);
  border-right-color: var(--purple);
  animation: loaderSpin 1s linear infinite;
}

.loader-text {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-secondary);
  animation: loaderPulse 1.5s ease-in-out infinite;
}

@keyframes loaderSpin {
  to {
    transform: rotate(360deg);
  }
}

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

/* ----------------------------------------
   5. Cursor Glow
   ---------------------------------------- */
.cursor-glow {
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  will-change: transform;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cursor-glow-text {
  font-family: var(--font-display);
  font-size: 80px;
  font-weight: 800;
  letter-spacing: 12px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.18;
  transition: opacity 0.25s ease;
  user-select: none;
}

/* ----------------------------------------
   6. Navbar
   ---------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition-medium), backdrop-filter var(--transition-medium),
    box-shadow var(--transition-medium);
}

.navbar.scrolled {
  background: rgba(8, 8, 14, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border-default);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-main);
  border-radius: var(--radius-sm);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
}

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

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: var(--cyan);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-medium), opacity var(--transition-fast);
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: rgba(8, 8, 14, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-default);
  padding: 24px;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform var(--transition-medium), opacity var(--transition-medium), visibility var(--transition-medium);
  z-index: 999;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-link {
  display: block;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.mobile-link:hover,
.mobile-link.active {
  color: var(--cyan);
  background: rgba(0, 240, 255, 0.05);
}

/* ----------------------------------------
   7. Hero Section
   ---------------------------------------- */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) - 20px);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  transform: perspective(500px) rotateX(30deg) translateY(-10%);
  transform-origin: center bottom;
}

.floating-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: orbFloat 8s ease-in-out infinite;
}

.floating-orb:nth-child(2) {
  width: 400px;
  height: 400px;
  background: var(--cyan);
  top: 15%;
  right: -8%;
  animation-delay: 0s;
}

.floating-orb:nth-child(3) {
  width: 350px;
  height: 350px;
  background: var(--purple);
  bottom: 10%;
  left: -5%;
  animation-delay: -3s;
}

.floating-orb:nth-child(4) {
  width: 200px;
  height: 200px;
  background: var(--pink);
  top: 40%;
  left: 30%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(30px, -20px) scale(1.05);
  }
  50% {
    transform: translate(-15px, 25px) scale(0.95);
  }
  75% {
    transform: translate(20px, 15px) scale(1.02);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 10px;
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--cyan);
  margin-bottom: 32px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 240, 255, 0); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--cyan);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: cursorBlink 1s step-end infinite;
}

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

.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-medium),
    background var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gradient-main);
  color: #08080e;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.2);
}

.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(0, 240, 255, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1px solid transparent;
  background-image: linear-gradient(var(--bg-primary), var(--bg-primary)),
    var(--gradient-main);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  color: var(--text-primary);
}

.btn-outline:hover {
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.12);
}

.btn-full {
  width: 100%;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  padding: 0 32px;
}

.stat:first-child {
  padding-left: 0;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
}

.stat-plus {
  color: var(--cyan);
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-default);
}

/* ----------------------------------------
   8. Scroll Indicator
   ---------------------------------------- */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 2;
  animation: scrollBounce 2s ease-in-out infinite;
}

.mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  position: relative;
}

.wheel {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--cyan);
  border-radius: 3px;
  animation: wheelScroll 1.5s ease-in-out infinite;
}

@keyframes wheelScroll {
  0% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(12px); opacity: 0; }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ----------------------------------------
   9. Section Base
   ---------------------------------------- */
.section {
  padding: 64px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ----------------------------------------
   10. Services
   ---------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 36px 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: border-color var(--transition-medium), transform var(--transition-medium),
    box-shadow var(--transition-medium);
  overflow: visible;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.03), transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-medium);
  pointer-events: none;
}

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

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 240, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: 24px;
  margin-bottom: 24px;
  transition: background var(--transition-medium);
}

.service-card:hover .service-icon {
  background: rgba(0, 240, 255, 0.14);
}

.service-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tags span {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.service-card-wide {
  grid-column: span 2;
}

/* ----------------------------------------
   11. About
   ---------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-medium);
}

.about-feature:hover {
  border-color: var(--border-hover);
}

.feature-icon {
  width: 42px;
  height: 42px;
  min-width: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 240, 255, 0.08);
  border-radius: 10px;
  font-size: 20px;
}

.about-feature h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-feature p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

.about-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.visual-card {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  overflow: hidden;
}

.visual-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-xl);
  background: var(--gradient-main);
  opacity: 0.1;
  z-index: 0;
  transition: opacity var(--transition-medium);
}

.visual-card:hover::after {
  opacity: 0.2;
}

.vr-headset {
  position: relative;
  z-index: 1;
  font-size: 120px;
  animation: vrFloat 4s ease-in-out infinite;
}

@keyframes vrFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.visual-label {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  z-index: 1;
}

/* ----------------------------------------
   12. Advantages
   ---------------------------------------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  padding: 36px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: border-color var(--transition-medium), transform var(--transition-medium),
    box-shadow var(--transition-medium);
  text-align: center;
}

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

.advantage-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.advantage-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.advantage-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ----------------------------------------
   13. Target / Clients
   ---------------------------------------- */
.target-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.target-card {
  padding: 40px 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  text-align: center;
  transition: border-color var(--transition-medium), transform var(--transition-medium),
    box-shadow var(--transition-medium);
}

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

.target-emoji {
  font-size: 48px;
  margin-bottom: 20px;
  display: block;
}

.target-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.target-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ----------------------------------------
   14. Articles (listing)
   ---------------------------------------- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  overflow: hidden;
  transition: border-color var(--transition-medium), transform var(--transition-medium),
    box-shadow var(--transition-medium);
}

.article-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow-cyan);
}

.article-card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(180, 0, 255, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.article-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.article-card:hover .article-card-img::after {
  opacity: 1;
}

.article-card-icon {
  font-size: 40px;
  z-index: 1;
  transition: transform var(--transition-medium);
}

.article-card:hover .article-card-icon {
  transform: scale(1.1);
}

.article-card-body {
  padding: 28px;
}

.article-card-date {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.article-card:hover .article-card-title {
  color: var(--cyan);
}

.article-card-excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  transition: gap var(--transition-fast);
}

.article-card-link:hover {
  gap: 10px;
}

/* ----------------------------------------
   15. Article Page (single)
   ---------------------------------------- */
.article-page {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 100px;
}

.article-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 40px;
  transition: color var(--transition-fast), gap var(--transition-fast);
}

.article-back:hover {
  color: var(--cyan);
  gap: 12px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-meta-date {
  font-size: 13px;
  color: var(--text-muted);
}

.article-meta-cat {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(0, 240, 255, 0.08);
  border-radius: 100px;
  border: 1px solid rgba(0, 240, 255, 0.15);
}

.article-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 40px;
}

.article-lead {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-default);
}

.article-content {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-content h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

.article-content blockquote {
  margin: 32px 0;
  padding: 24px 28px;
  border-left: 3px solid var(--cyan);
  background: rgba(0, 240, 255, 0.04);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-primary);
}

.article-nav-bottom {
  display: flex;
  gap: 20px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border-default);
}

.article-nav-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-medium), transform var(--transition-fast);
}

.article-nav-link:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.article-nav-link span:first-child {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

.article-nav-link span:last-child {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ----------------------------------------
   16. Contact
   ---------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-medium), transform var(--transition-fast);
}

.contact-channel:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.contact-channel-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 240, 255, 0.08);
  border-radius: 10px;
  font-size: 18px;
}

.contact-channel-text {
  display: flex;
  flex-direction: column;
}

.contact-channel-text small {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-channel-text span {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-form-wrap {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: 40px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 15px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

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

/* ----------------------------------------
   17. Footer
   ---------------------------------------- */
.footer {
  border-top: 1px solid var(--border-default);
  padding: 60px 0 0;
  background: var(--bg-secondary);
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .nav-logo {
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 320px;
}

.footer-links h4 {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links li a:hover {
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-default);
  padding: 24px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom-inner p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom-inner a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-bottom-inner a:hover {
  color: var(--cyan);
}

.footer-privacy {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-privacy:hover {
  color: var(--cyan);
}

.footer-bottom-socials {
  display: flex;
  gap: 16px;
}

/* ----------------------------------------
   18. Back to Top
   ---------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 20px;
  cursor: pointer;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition-medium), visibility var(--transition-medium),
    transform var(--transition-medium), background var(--transition-fast);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: rgba(0, 240, 255, 0.2);
  transform: translateY(-3px);
}

body.menu-open {
  overflow: hidden;
}

/* ----------------------------------------
   19. Scroll Animations
   ---------------------------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="fade-up"] {
  transform: translateY(32px);
}

[data-animate="fade-left"] {
  transform: translateX(-32px);
}

[data-animate="fade-right"] {
  transform: translateX(32px);
}

[data-animate="fade-up"].visible,
[data-animate="fade-left"].visible,
[data-animate="fade-right"].visible {
  transform: translate(0, 0);
}

[data-animate="scale"] {
  transform: scale(0.92);
}

[data-animate="scale"].visible {
  transform: scale(1);
}

[data-animate-delay="1"] { transition-delay: 0.1s; }
[data-animate-delay="2"] { transition-delay: 0.2s; }
[data-animate-delay="3"] { transition-delay: 0.3s; }
[data-animate-delay="4"] { transition-delay: 0.4s; }
[data-animate-delay="5"] { transition-delay: 0.5s; }

/* ----------------------------------------
   20. Media Queries
   ---------------------------------------- */

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

  .service-card-wide {
    grid-column: span 2;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    min-height: 320px;
  }

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

  .footer-brand {
    grid-column: span 2;
  }
}

/* ---- Max 768px ---- */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .section {
    padding: 24px 0;
  }

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

  /* Nav */
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    min-height: 80vh;
    padding-top: calc(var(--nav-height) + 16px);
    padding-bottom: 24px;
  }

  .hero-title {
    letter-spacing: -1px;
    margin-bottom: 8px;
  }

  .hero-title .gradient-text {
    display: block;
    margin-top: 4px;
  }

  .hero-title br {
    display: none;
  }

  .hero-buttons {
    margin-bottom: 28px;
  }

  .hero-subtitle {
    margin-bottom: 20px;
  }

  .hero-badge {
    margin-bottom: 16px;
  }

  .hero-stats {
    gap: 16px;
  }

  .stat {
    padding: 0 20px;
  }

  .stat-number {
    font-size: 28px;
  }

  .stat-divider {
    height: 32px;
  }

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

  .service-card-wide {
    grid-column: span 1;
  }

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

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .scroll-indicator {
    display: none;
  }

  .about-visual {
    display: none;
  }

  .about-grid {
    gap: 16px;
  }

  /* Article */
  .article-nav-bottom {
    flex-direction: column;
  }
}

/* ---- Max 480px ---- */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-stats {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .stat {
    padding: 0;
    text-align: center;
  }

  .stat-divider {
    display: none;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .service-card {
    padding: 28px 24px;
  }

  .contact-form-wrap {
    padding: 28px 20px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 18px;
  }

  .scroll-indicator {
    display: none;
  }
}

/* ---- 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;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }

  .side-panel,
  .particles-canvas {
    display: none !important;
  }
}

/* ============================================
   SCI-FI Features (desktop only)
   ============================================ */

/* --- 1. HUD Corner Brackets --- */
.hud-corners {
  position: relative;
}

.hud-corners .hud-corner {
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--cyan);
  border-style: solid;
  opacity: 0.5;
  transition: opacity var(--transition-medium), width var(--transition-medium), height var(--transition-medium);
  pointer-events: none;
  z-index: 2;
}

.hud-corners .hud-tl {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
  border-radius: var(--radius-lg) 0 0 0;
}

.hud-corners .hud-br {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
  border-radius: 0 0 var(--radius-lg) 0;
}

.hud-corners .hud-tr {
  top: -1px;
  right: -1px;
  border-width: 2px 2px 0 0;
  border-radius: 0 var(--radius-lg) 0 0;
  border-color: var(--purple);
  opacity: 0.3;
}

.hud-corners .hud-bl {
  bottom: -1px;
  left: -1px;
  border-width: 0 0 2px 2px;
  border-radius: 0 0 0 var(--radius-lg);
  border-color: var(--purple);
  opacity: 0.3;
}

.hud-corners:hover .hud-corner {
  opacity: 0.9;
  width: 28px;
  height: 28px;
}

.hud-corners:hover .hud-tr,
.hud-corners:hover .hud-bl {
  opacity: 0.7;
}

/* --- 2. Side Data Panels --- */
.side-panel {
  position: fixed;
  z-index: 50;
  pointer-events: none;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.25;
  white-space: nowrap;
}

.side-panel-left {
  left: 18px;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: center center;
}

.side-panel-right {
  right: 18px;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center center;
}

.side-panel-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.side-panel-line {
  display: inline-block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.5;
}

.side-panel-dots {
  display: inline-flex;
  gap: 5px;
  margin-left: 8px;
}

.side-panel-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.2;
}

.side-panel-dot.active {
  opacity: 1;
  box-shadow: 0 0 6px var(--cyan);
}

/* --- 3. Scan Line --- */
html::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  opacity: 0.3;
  z-index: 9998;
  pointer-events: none;
  animation: scanLine 4s linear infinite;
  box-shadow: 0 0 30px 8px rgba(0, 240, 255, 0.4), 0 0 80px 20px rgba(0, 240, 255, 0.15);
}

@keyframes scanLine {
  0% { top: -2px; }
  100% { top: 100vh; }
}

/* --- 4. Particles Canvas --- */
.particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* --- 5. Section Grid Pattern --- */
.section-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  pointer-events: none;
}

/* --- Mobile: hide all SCI-FI --- */
@media (max-width: 1024px) {
  .side-panel,
  .particles-canvas {
    display: none;
  }
}

@media (max-width: 768px) {
  .hud-corners .hud-corner {
    display: none;
  }
}