:root {
  --bg: #0D1421;
  --text: #FFFFFF;
  --text-muted: rgba(255,255,255,0.75);
  --text-dim: rgba(255,255,255,0.5);
  --accent1: #5A9AE5;
  --accent2: #6AC5EA;
  --accent3: #FFBB5D;
  --accent4: #7B8CFF;
  --card-bg: rgba(90,154,229,0.05);
  --card-border: rgba(90,154,229,0.15);
  --shadow-lg: 0 30px 60px rgba(0,0,0,0.5);
  --shadow-xl: 0 40px 100px rgba(0,0,0,0.7);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.1;
  font-weight: 700;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

::selection {
  background: var(--accent1);
  color: #fff;
}

/* АНІМАЦІЇ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(3deg); }
  66% { transform: translate(-20px, 20px) rotate(-3deg); }
}

@keyframes float2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, 40px) scale(1.08); }
}

@keyframes float3 {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -50px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.9; }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes shimmer {
  100% { transform: translateX(100%); }
}

/* ФОН */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(130px);
  opacity: 0.35;
}

.g1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent1), transparent 70%);
  top: -250px;
  left: -150px;
  animation: float 28s ease-in-out infinite;
}

.g2 {
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, var(--accent2), transparent 70%);
  bottom: -350px;
  right: -250px;
  animation: float2 32s ease-in-out infinite;
}

.g3 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent3), transparent 65%);
  top: 35%;
  right: 8%;
  animation: float3 24s ease-in-out infinite;
}

.grid {
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(rgba(90,154,229,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90,154,229,0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* ТОПБАР */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(13,20,33,0.75);
  border-bottom: 1px solid rgba(90,154,229,0.15);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  animation: fadeIn 0.6s ease-out;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  transition: transform 0.3s ease;
}

.brand:hover {
  transform: scale(1.05);
}

.brand__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent1), var(--accent3));
  box-shadow: 0 0 20px var(--accent1);
  animation: pulse 2s ease-in-out infinite;
}

/* КНОПКИ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 2px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.15), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: #fff;
  box-shadow: 0 10px 40px rgba(0,245,255,0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 50px rgba(0,245,255,0.4);
}

.btn--secondary {
  background: rgba(0,245,255,0.08);
  border: 2px solid var(--accent1);
  color: var(--accent1);
}

.btn--secondary:hover {
  background: rgba(0,245,255,0.15);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0,245,255,0.2);
}

.btn--small {
  padding: 10px 20px;
  font-size: 14px;
}

.btn--large {
  padding: 18px 36px;
  font-size: 16px;
}

.btn--huge {
  padding: 22px 44px;
  font-size: 18px;
  border-radius: 16px;
}

/* HERO */
.hero {
  padding: 100px 0 80px;
  position: relative;
}

.hero__container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero__content {
  animation: fadeIn 1s ease-out;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(90,154,229,0.1);
  border: 1px solid rgba(90,154,229,0.3);
  border-radius: 100px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  animation: fadeIn 1s ease-out 0.2s backwards;
}

.badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent3);
  animation: pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 700;
  margin-bottom: 28px;
  animation: fadeIn 1s ease-out 0.3s backwards;
  letter-spacing: -2px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent1), var(--accent2), var(--accent3));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 6s ease infinite;
}

.hero__subtitle {
  font-size: 19px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 600px;
  animation: fadeIn 1s ease-out 0.4s backwards;
}

.hero__cta {
  margin-bottom: 50px;
  animation: fadeIn 1s ease-out 0.5s backwards;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  animation: fadeIn 1s ease-out 0.6s backwards;
}

.stat {
  padding: 24px;
  background: rgba(90,154,229,0.08);
  border: 1px solid rgba(90,154,229,0.2);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.stat:hover {
  background: rgba(90,154,229,0.12);
  border-color: rgba(90,154,229,0.35);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(90,154,229,0.25);
}

.stat__value {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent2);
}

.stat__label {
  font-size: 14px;
  color: var(--text-dim);
}

/* HERO IMAGE */
.hero__image {
  animation: slideInRight 1s ease-out 0.4s backwards;
}

.hero__photo {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 24px;
  border: 3px solid rgba(90,154,229,0.3);
  box-shadow: 0 20px 60px rgba(90,154,229,0.2);
  transition: all 0.4s ease;
}

.hero__photo:hover {
  transform: scale(1.03);
  border-color: rgba(255,187,93,0.5);
  box-shadow: 0 30px 80px rgba(255,187,93,0.25);
}

/* ABOUT */
.about {
  padding: 60px 0;
}

.about__title {
  font-size: clamp(40px, 5vw, 56px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeIn 1s ease-out;
}

.about__content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.about__item {
  padding: 30px;
  background: rgba(90,154,229,0.06);
  border: 1px solid rgba(90,154,229,0.15);
  border-radius: 20px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: all 0.3s ease;
  animation: scaleIn 0.6s ease-out backwards;
}

.about__item:nth-child(1) { animation-delay: 0.1s; }
.about__item:nth-child(2) { animation-delay: 0.2s; }
.about__item:nth-child(3) { animation-delay: 0.3s; }
.about__item:nth-child(4) { animation-delay: 0.4s; }

.about__item:hover {
  transform: translateY(-6px);
  border-color: rgba(90,154,229,0.35);
  box-shadow: 0 15px 40px rgba(90,154,229,0.2);
  background: rgba(90,154,229,0.1);
}

.about__icon {
  font-size: 40px;
  flex-shrink: 0;
}

.about__item p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* CASES */
.cases {
  padding: 60px 0;
}

.cases__title {
  font-size: clamp(40px, 5vw, 56px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeIn 1s ease-out;
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.case-card:nth-child(5) {
  grid-column: 1 / -1;
  max-width: 800px;
  margin: 0 auto;
  aspect-ratio: auto;
  height: auto;
}

.case-card:nth-child(5) .case-card__image {
  aspect-ratio: auto;
  height: auto;
}

.case-card {
  aspect-ratio: 1;
  border-radius: 20px;
  overflow: hidden;
  border: 2px solid rgba(90,154,229,0.2);
  transition: all 0.4s ease;
  animation: scaleIn 0.6s ease-out backwards;
  background: rgba(90,154,229,0.05);
  cursor: pointer;
  position: relative;
}

.case-card:nth-child(1) { animation-delay: 0.1s; }
.case-card:nth-child(2) { animation-delay: 0.15s; }
.case-card:nth-child(3) { animation-delay: 0.2s; }
.case-card:nth-child(4) { animation-delay: 0.25s; }
.case-card:nth-child(5) { animation-delay: 0.3s; }

.case-card:hover {
  transform: scale(1.05);
  border-color: rgba(90,154,229,0.5);
  box-shadow: 0 15px 40px rgba(90,154,229,0.25);
  z-index: 10;
}

.case-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}

.case-card:hover .case-card__image {
  transform: scale(1.1);
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  padding: 10px;
  animation: fadeIn 0.3s ease-out;
  overflow: auto;
}

.modal.active {
  display: flex;
}

.modal__content {
  max-width: 95vw;
  max-height: 90vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__image {
  max-width: 95vw;
  max-height: 85vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

.modal__close {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(0,0,0,0.7);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.modal__close:hover {
  transform: scale(1.1);
  background: rgba(255,255,255,0.2);
}

/* REVIEWS */
.reviews {
  padding: 60px 0;
}

.reviews__title {
  font-size: clamp(40px, 5vw, 56px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeIn 1s ease-out;
}

.reviews__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.review-card {
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid rgba(90,154,229,0.2);
  transition: all 0.4s ease;
  animation: scaleIn 0.6s ease-out backwards;
  background: rgba(90,154,229,0.05);
  cursor: pointer;
  position: relative;
  height: 240px;
}

.review-card:nth-child(1) { animation-delay: 0.1s; }
.review-card:nth-child(2) { animation-delay: 0.15s; }
.review-card:nth-child(3) { animation-delay: 0.2s; }
.review-card:nth-child(4) { animation-delay: 0.25s; }

.review-card:hover {
  transform: translateY(-6px);
  border-color: rgba(90,154,229,0.5);
  box-shadow: 0 15px 40px rgba(90,154,229,0.25);
  z-index: 10;
}

.review-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.4s ease;
}

.review-card:hover .review-card__image {
  transform: scale(1.05);
}

/* COURSES */
.courses {
  padding: 60px 0;
}

.courses__title {
  font-size: clamp(40px, 5vw, 56px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeIn 1s ease-out;
}

.courses__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.course-card {
  padding: 40px;
  background: linear-gradient(135deg, rgba(90,154,229,0.06), rgba(255,187,93,0.05));
  border: 2px solid rgba(90,154,229,0.25);
  border-radius: 24px;
  text-align: center;
  transition: all 0.4s ease;
  animation: scaleIn 0.6s ease-out backwards;
}

.course-card:nth-child(1) { animation-delay: 0.1s; }
.course-card:nth-child(2) { animation-delay: 0.2s; }

.course-card:hover {
  transform: scale(1.03);
  border-color: rgba(90,154,229,0.5);
  box-shadow: 0 20px 60px rgba(90,154,229,0.3);
  background: linear-gradient(135deg, rgba(90,154,229,0.1), rgba(255,187,93,0.08));
}

.course-card__icon {
  font-size: 56px;
  margin-bottom: 20px;
}

.course-card__title {
  font-size: 28px;
  margin-bottom: 16px;
}

.course-card__text {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 30px;
  line-height: 1.6;
}

/* SOCIAL */
.social {
  padding: 60px 0;
}

.social__title {
  font-size: clamp(40px, 5vw, 56px);
  text-align: center;
  margin-bottom: 50px;
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeIn 1s ease-out;
}

.social__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.social-card {
  padding: 30px;
  background: rgba(90,154,229,0.08);
  border: 2px solid rgba(90,154,229,0.2);
  border-radius: 20px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: all 0.4s ease;
  animation: scaleIn 0.6s ease-out backwards;
}

.social-card:nth-child(1) {
  animation-delay: 0.1s;
  background: linear-gradient(135deg, rgba(0,242,234,0.1), rgba(255,0,80,0.1));
  border-color: rgba(0,242,234,0.35);
}

.social-card:nth-child(1):hover {
  border-color: rgba(0,242,234,0.5);
  box-shadow: 0 15px 40px rgba(0,242,234,0.25);
}

.social-card:nth-child(2) {
  animation-delay: 0.15s;
  background: linear-gradient(135deg, rgba(245,133,41,0.1), rgba(221,42,123,0.1));
  border-color: rgba(221,42,123,0.35);
}

.social-card:nth-child(2):hover {
  border-color: rgba(221,42,123,0.5);
  box-shadow: 0 15px 40px rgba(221,42,123,0.25);
}

.social-card:nth-child(3) {
  animation-delay: 0.2s;
  background: linear-gradient(135deg, rgba(90,154,229,0.1), rgba(123,97,255,0.1));
  border-color: rgba(90,154,229,0.35);
}

.social-card:nth-child(3):hover {
  border-color: rgba(0,245,255,0.5);
  box-shadow: 0 15px 40px rgba(0,245,255,0.25);
}

.social-card:nth-child(4) {
  animation-delay: 0.25s;
  background: linear-gradient(135deg, rgba(90,154,229,0.1), rgba(123,97,255,0.1));
  border-color: rgba(90,154,229,0.35);
}

.social-card:nth-child(4):hover {
  border-color: rgba(0,245,255,0.5);
  box-shadow: 0 15px 40px rgba(0,245,255,0.25);
}

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

.social-card__icon {
  color: var(--accent2);
  margin-bottom: 16px;
  transition: transform 0.3s ease;
}

.social-card:hover .social-card__icon {
  transform: scale(1.15);
}

.social-card__text {
  font-size: 16px;
  font-weight: 600;
}

/* CTA FINAL */
.cta-final {
  padding: 80px 0 100px;
  text-align: center;
}

.cta-final__title {
  font-size: clamp(42px, 6vw, 68px);
  margin-bottom: 50px;
  letter-spacing: -2px;
  animation: fadeIn 1s ease-out;
}

/* ФУТЕР */
.footer {
  padding: 50px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  background: rgba(0,0,0,0.2);
}

.footer__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.footer__text {
  font-size: 15px;
  color: var(--text-muted);
}

.footer__container > span {
  font-size: 14px;
  color: var(--text-dim);
}

/* АДАПТИВ */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr 0.6fr;
    gap: 40px;
  }

  .hero__image {
    max-width: 100%;
  }

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

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

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

  .case-card:nth-child(5) {
    grid-column: 1 / -1;
    max-width: 100%;
  }

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

  .review-card {
    height: 250px;
  }

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

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

@media (max-width: 768px) {
  .container {
    width: calc(100% - 32px);
  }

  .hero {
    padding: 60px 0 60px;
  }

  .hero__container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__image {
    max-width: 400px;
    margin: 0 auto;
    order: 1;
  }

  .hero__content {
    order: 0;
  }

  .hero__photo {
    max-height: none;
  }

  .hero__title {
    font-size: 36px;
  }

  .hero__subtitle {
    font-size: 17px;
  }

  .about, .cases, .courses, .social {
    padding: 50px 0;
  }

  .cta-final {
    padding: 60px 0 80px;
  }

  .cases__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .case-card:nth-child(5) {
    grid-column: 1 / -1;
    max-width: none;
  }

  .reviews__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .footer__container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .modal__close {
    top: 10px;
    right: 10px;
    width: 44px;
    height: 44px;
    font-size: 28px;
  }
}

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

  .hero__title {
    font-size: 32px;
  }

  .hero__subtitle {
    font-size: 16px;
  }

  .btn--large {
    padding: 14px 24px;
    font-size: 14px;
  }

  .cases__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .case-card:nth-child(5) {
    grid-column: 1;
  }

  .reviews__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .review-card {
    height: 220px;
  }

  .modal__image {
    max-width: 100vw;
    max-height: 75vh;
    border-radius: 4px;
  }

  .modal__close {
    width: 40px;
    height: 40px;
    font-size: 26px;
  }
}