:root {
  --bg-primary: #e0e5ec;
  --bg-card: rgba(224, 229, 236, 0.85);
  --text-primary: #2d3436;
  --shadow-light: #fafafa;
  --shadow-dark: #000000;
  --accent-color: #0551b694;
  --accent-solid: #0551b6;
  --accent-p: #265ea8;
  --font-family: "Quicksand", sans-serif;
  --radius-card: 30px;
  --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-bounce: 0.4s var(--ease-bounce);
  --shadow-neo-out: 8px 8px 16px #000000, -8px -8px 16px #000000;
  --shadow-neo-in: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.app-container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 2vh 0;
}

.main-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.spacer { flex: 1; min-height: 20px; }

.bg-gradient {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -2;
  background: linear-gradient(135deg, #14456db2 15%, #feffff 25%, #232b38 40.8%, #0f2e52 65%, #ffffff 90%, #14456db2 100%);
  background-size: 400% 400%;
  animation: gradientMove 20s ease-in-out infinite;
}

@keyframes gradientMove {
  0%, 100% { background-position: 0% 50%; }
  25% { background-position: 100% 0%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 0% 100%; }
}

#neuralCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.6;
}

.site-header {
  background: rgba(224, 229, 236, 0.8);
  padding: 26px 24px;
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: slideDown 0.8s var(--ease-bounce) forwards;
  transform: translateY(-100%);
  flex-shrink: 0;
  width: 100%;
  box-shadow: var(--shadow-neo-in);
}

@keyframes slideDown {
  to { transform: translateY(0); }
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-logo {
  font-weight: 700;
  font-size: 2rem;
  color: var(--accent-p);
  text-shadow: 1px 0px 1px #5d6066, -1px -0px 1px var(--shadow-light);
}

.site-logo a { text-decoration: none; color: inherit; }
.site-logo h1 { font-size: inherit; font-weight: inherit; margin: 0; }

.main-nav { position: relative; }

.menu-toggle {
  background: transparent;
  border: none;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-family);
  animation: btnPop 0.6s var(--ease-bounce) 0.6s forwards;
  opacity: 0;
  transform: scale(0.8);
}

@keyframes btnPop {
  0% { opacity: 0; transform: scale(0.8) rotate(-6deg); }
  60% { transform: scale(1.05) rotate(2deg); }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}

.menu-toggle:hover { box-shadow: var(--shadow-neo-in); transform: scale(0.96); }
.menu-toggle i { margin-right: 8px; }

.nav-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 58px;
  background: rgba(223, 232, 243, 1);
  min-width: 300px;
  border-radius: 20px;
  padding: 12px 0;
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
  animation: neoDrop 0.3s ease;
}

@keyframes neoDrop {
  from { opacity: 0; transform: translateY(-10px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.nav-dropdown.is-open { display: block; }

.nav-dropdown a {
  display: block;
  padding: 12px 24px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s;
  border-radius: 12px;
  margin: 0 8px;
}

.nav-dropdown a:hover {
  background: #d0d5dd;
  box-shadow: var(--shadow-neo-in);
}

.nav-dropdown a i { margin-right: 10px; color: var(--accent-color); }

.cards-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 550px;
  margin: 10% auto 0;
  position: relative;
  perspective: 1200px;
}

.cards-wrapper[hidden] { display: none; }

.welcome-card { width: 100%; }
.welcome-card[hidden] { display: none; }
.welcome-card.is-active { display: block; }

.welcome-card .hero-card-content {
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-neo-out), 0 40px 80px rgba(0,0,0,0.5);
  cursor: pointer;
  transform: perspective(1200px) rotateX(2deg) rotateY(1deg) translateZ(20px);
  animation: float3D 6s ease-in-out infinite;
  transition: transform var(--transition-bounce), box-shadow var(--transition-bounce);
}

@keyframes float3D {
  0%, 100% { transform: perspective(1200px) rotateX(2deg) rotateY(1deg) translateZ(20px) translateY(0); }
  50% { transform: perspective(1200px) rotateX(1.5deg) rotateY(-1deg) translateZ(30px) translateY(-10px); }
}

.welcome-card .hero-card-content:hover {
  transform: perspective(1200px) rotateX(0deg) rotateY(0deg) translateZ(40px) translateY(-15px) scale(1.02);
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 20px 40px rgba(0,0,0,0.3), 8px 8px 16px #ffffff, -8px -8px 16px #ffffff;
}

.card-image-wrapper {
  width: 100%;
  height: 320px;
  overflow: hidden;
  border: 2px solid #3b2514;
  border-radius: 20px;
  margin-bottom: 16px;
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.welcome-card .hero-card-content:hover .card-image { transform: scale(1.1); }

.welcome-card h2 {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-shadow: 1px 0px 1px #142441, -1px -0px 1px var(--shadow-light);
  margin: 12px 0;
}

.welcome-card p {
  font-size: 1.05rem;
  color: var(--accent-p);
  line-height: 1.6;
  margin-bottom: 1.6vh;
  font-weight: 500;
}

.card-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3vh;
  padding-top: 10px;
  border-top: 1px solid rgba(0,0,0,0.08);
}

.card-counter {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-p);
  padding: 6px 16px;
  border-radius: 20px;
}

.card-counter:hover { box-shadow: var(--shadow-neo-in); }

.btn-next {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 32px;
  background: transparent;
  border: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-bounce);
  color: var(--text-primary);
}

.btn-next:hover {
  box-shadow: var(--shadow-neo-in);
  transform: scale(0.94);
  color: var(--accent-solid);
}

.btn-next i { transition: transform 0.3s; }
.btn-next:hover i { transform: translateX(4px); }

.cards-app-wrapper {
  width: 100%;
  max-width: 550px;
  margin: 10% auto 0;
  perspective: 1200px;
}

.cards-app-wrapper[hidden] { display: none; }

.card-app {
  width: 100%;
  background: var(--bg-card);
  padding: 28px 36px 24px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-neo-out), 0 15px 40px rgba(0,0,0,0.3);
  transform: perspective(1200px) rotateX(1deg) rotateY(0.5deg) translateZ(15px);
  animation: floatApp3D 7s ease-in-out infinite;
  transition: transform var(--transition-bounce), box-shadow var(--transition-bounce);
}

.card-app[hidden] { display: none; }
.card-app.is-active { display: flex; flex-direction: column; }

@keyframes floatApp3D {
  0%, 100% { transform: perspective(1200px) rotateX(1deg) rotateY(0.5deg) translateZ(15px) translateY(0); }
  50% { transform: perspective(1200px) rotateX(0.5deg) rotateY(-0.5deg) translateZ(25px) translateY(-8px); }
}

.card-app:hover {
  transform: perspective(1200px) rotateX(0deg) rotateY(0deg) translateZ(35px) translateY(-12px) scale(1.02);
  box-shadow: 0 30px 60px rgba(0,0,0,0.4), 0 15px 30px rgba(0,0,0,0.2), 12px 12px 24px var(--shadow-dark), -12px -12px 24px var(--shadow-light);
}

.card-app.is-animating {
  animation: fadeInUp 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: perspective(1200px) translateY(30px) scale(0.96) rotateX(2deg); }
  to { opacity: 1; transform: perspective(1200px) translateY(0) scale(1) rotateX(0deg); }
}

.service-card-header {
  margin-bottom: 16px;
  flex-shrink: 0;
  text-align: center;
}

.card-icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--bg-primary);
  border-radius: 50%;
  box-shadow: var(--shadow-neo-in);
  margin-bottom: 12px;
  font-size: 1.6rem;
  color: var(--accent-solid);
}

.card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 8px 0 4px;
  display: inline-block;
  position: relative;
}

.card-title::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.4s;
}

.card-app:hover .card-title::after { width: 100%; }

.card-subtitle {
  font-size: 0.95rem;
  color: var(--accent-p);
  font-weight: 600;
  line-height: 1.5;
  margin-top: 4px;
}

.service-card-body { flex: 1; margin: 8px 0 16px; }

.service-card-body .card-image-wrapper { height: 180px; margin-bottom: 16px; }

.feature-list {
  list-style: none;
  display: grid;
  gap: 8px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  padding: 8px 12px;
  background: rgba(255,255,255,0.4);
  border-radius: 12px;
  transition: background 0.3s;
}

.feature-item:hover { background: #fff; }
.check-icon { color: var(--accent-solid); font-size: 1rem; margin-top: 2px; flex-shrink: 0; }
.feature-item strong { display: block; font-weight: 600; }
.feature-desc { display: block; font-weight: 500; font-size: 0.9rem; color: var(--accent-p); margin-top: 1px; }

.service-card-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(0,0,0,0.05);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.btn-app {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  background: var(--bg-primary);
  color: var(--accent-p);
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  font-family: var(--font-family);
  box-shadow: 2px 2px 4px var(--shadow-dark);
  transition: all var(--transition-bounce);
  border: none;
  cursor: pointer;
}

.btn-app:hover {
  box-shadow: var(--shadow-neo-in);
  transform: scale(0.94);
  color: var(--accent-solid);
}

.btn-app i { transition: transform 0.3s; }
.btn-app:hover i { transform: translateX(4px); }
.btn-app-back:hover i { transform: translateX(-4px); }

.btn-close-card {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  background: transparent;
  color: var(--text-primary);
  border: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all 0.3s;
  margin-left: auto;
}

.btn-close-card:hover { background: rgba(0,0,0,0.05); transform: scale(0.95); }

.site-footer {
  background: rgba(224, 229, 236, 0.7);
  padding: 20px 24px;
  box-shadow: var(--shadow-neo-in);
  flex-shrink: 0;
  width: 100%;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 16px;
}

.footer-info p { color: var(--accent-p); font-weight: 600; margin: 0; }

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

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  font-size: 1.6rem;
  color: var(--text-primary);
  border-radius: 50%;
  background: var(--bg-primary);
  box-shadow: var(--shadow-neo-in);
  transition: all var(--transition-bounce);
  text-decoration: none;
}

.social-links a[aria-label="Telegram"]:hover { color: #1877f2; transform: scale(0.92) translateY(-3px); }
.social-links a[aria-label="Facebook"]:hover { color: #0a66c2; transform: scale(0.92) translateY(-3px); }
.social-links a[aria-label="YouTube"]:hover { color: #ff0000; transform: scale(0.92) translateY(-3px); }
.social-links a[aria-label="Instagram"]:hover { color: #e4405f; transform: scale(0.92) translateY(-3px); }
.social-links a[aria-label="Twitter / X"]:hover { color: #2c5592; transform: scale(0.92) translateY(-3px); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .bg-gradient { animation: none; }
  .welcome-card .hero-card-content { animation: none; transform: none; }
  .welcome-card .hero-card-content:hover { transform: translateY(-5px); }
  .card-app { animation: none; transform: none; }
  .card-app:hover { transform: translateY(-5px); }
  .welcome-card .hero-card-content:hover .card-image { transform: none; }
}

@media (max-width: 1024px) {
  .header-inner { padding: 0 20px; }
  .site-logo { font-size: 1.6rem; }
  .menu-toggle { padding: 10px 22px; font-size: 0.85rem; }
  .nav-dropdown { top: 52px; min-width: 250px; }
  .nav-dropdown a { padding: 10px 16px; font-size: 0.85rem; }
  .cards-wrapper, .cards-app-wrapper { margin-top: 8%; }
  .welcome-card .hero-card-content { padding: 28px 24px; }
  .card-image-wrapper { height: 200px; }
  .welcome-card h2 { font-size: 1.5rem; line-height: 1.4; }
  .welcome-card p { font-size: 0.95rem; }
  .card-app { padding: 24px 20px; }
  .card-title { font-size: 1.2rem; }
  .service-card-body .card-image-wrapper { height: 160px; }
  .social-links a { width: 44px; height: 44px; font-size: 1.2rem; }
}

@media (max-width: 480px) {
  .app-container { padding: 1vh 0; }
  .main-content { padding: 0 16px; }
  .site-header { padding: 16px; }
  .header-inner { flex-direction: column; gap: 12px; padding: 0; }
  .site-logo { font-size: 1.4rem; text-align: center; }
  .menu-toggle { padding: 8px 24px; font-size: 0.8rem; }
  .nav-dropdown {
    top: 48px;
    min-width: 200px;
    width: 90vw;
    left: 5vw;
    right: 5vw;
    transform: none;
  }
  .nav-dropdown a { font-size: 0.8rem; padding: 10px 14px; }
  .cards-wrapper, .cards-app-wrapper { margin-top: 15%; }
  .welcome-card .hero-card-content { padding: 20px 16px; border-radius: 20px; }
  .card-image-wrapper { height: auto; aspect-ratio: 16/9; }
  .welcome-card h2 { font-size: 1.2rem; line-height: 1.3; }
  .welcome-card p { font-size: 0.85rem; text-align: center; line-height: 1.5; }
  .card-footer-nav { flex-direction: column; gap: 10px; align-items: stretch; margin-top: 2vh; }
  .btn-next { justify-content: center; }
  .card-app { padding: 16px 14px; }
  .card-title { font-size: 1.05rem; }
  .card-subtitle { font-size: 0.8rem; }
  .service-card-body .card-image-wrapper { height: 140px; }
  .feature-item { font-size: 0.75rem; padding: 5px 8px; }
  .feature-desc { font-size: 0.75rem; }
  .btn-app { padding: 8px 18px; font-size: 0.8rem; }
  .btn-close-card { padding: 6px 14px; font-size: 0.7rem; }
  .card-icon-wrapper { width: 44px; height: 44px; font-size: 1.1rem; }
  .service-card-footer { flex-direction: column; }
  .btn-close-card { margin-left: 0; }
  .site-footer { padding: 16px; }
  .footer-inner { flex-direction: column; text-align: center; gap: 12px; }
  .footer-info p { font-size: 0.85rem; }
  .social-links a { width: 36px; height: 36px; font-size: 1rem; }
  #neuralCanvas { opacity: 0.3; }
}

@media (max-width: 360px) {
  .site-logo { font-size: 1rem; }
  .menu-toggle { font-size: 0.7rem; padding: 6px 18px; }
  .nav-dropdown { min-width: 160px; }
  .welcome-card .hero-card-content { padding: 16px 12px; }
  .welcome-card h2 { font-size: 1rem; }
  .welcome-card p { font-size: 0.75rem; }
  .card-app { padding: 12px 10px; }
  .card-title { font-size: 0.95rem; }
  .card-subtitle { font-size: 0.7rem; }
  .service-card-body .card-image-wrapper { height: 110px; }
  .feature-item { font-size: 0.65rem; padding: 4px 6px; }
  .feature-desc { font-size: 0.65rem; }
  .btn-app { padding: 6px 14px; font-size: 0.7rem; }
  .btn-close-card { padding: 4px 10px; font-size: 0.6rem; }
  .card-icon-wrapper { width: 36px; height: 36px; font-size: 0.9rem; }
  .footer-info p { font-size: 0.75rem; }
  .social-links a { width: 32px; height: 32px; font-size: 0.85rem; }
  #neuralCanvas { opacity: 0.15; }
}

@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
  .cards-wrapper, .cards-app-wrapper { width: 60%; margin-top: 5%; }
  .welcome-card .hero-card-content { padding: 24px 20px; }
  .card-image-wrapper { height: 160px; }
  .welcome-card h2 { font-size: 1.3rem; }
  .welcome-card p { font-size: 0.85rem; }
  .card-app { padding: 20px 18px; }
  .card-title { font-size: 1.1rem; }
  .social-links a { width: 40px; height: 40px; font-size: 1.1rem; }
}

@media (max-width: 767px) and (orientation: landscape) {
  .cards-wrapper, .cards-app-wrapper { width: 60%; margin-top: 3%; }
  .welcome-card .hero-card-content { padding: 16px 14px; }
  .card-image-wrapper { height: 120px; }
  .welcome-card h2 { font-size: 1rem; }
  .welcome-card p { font-size: 0.75rem; }
  .card-app { padding: 14px 12px; }
  .card-title { font-size: 0.95rem; }
  .card-subtitle { font-size: 0.7rem; }
  .service-card-body .card-image-wrapper { height: 110px; }
  .feature-item { font-size: 0.7rem; padding: 4px 6px; }
  .feature-desc { font-size: 0.6rem; }
  .btn-app { padding: 6px 14px; font-size: 0.7rem; }
  .social-links a { width: 32px; height: 32px; font-size: 0.85rem; }
  .site-logo { font-size: 1rem; }
  .menu-toggle { padding: 4px 12px; font-size: 0.65rem; }
  .header-inner { flex-direction: row; gap: 8px; }
  .footer-inner { flex-direction: row; }
  #neuralCanvas { opacity: 0.15; }
}

@media (min-width: 1025px) and (max-width: 1366px) {
  .cards-wrapper, .cards-app-wrapper { margin-top: 6%; }
}