@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  --primary-bg: #0d1117;
  --secondary-bg: #161b22;
  --tertiary-bg: #21262d;
  --accent-orange: #ff6b35;
  --accent-cyan: #00d4ff;
  --accent-gold: #ffd700;
  --accent-purple: #a855f7;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-neon: 0 0 30px rgba(255, 107, 53, 0.4);
  --shadow-cyan: 0 0 25px rgba(0, 212, 255, 0.3);
  --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.25);
}

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

body {
  font-family: 'Space Grotesk', sans-serif;
  background: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 0.95rem;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: linear-gradient(180deg, rgba(13, 17, 23, 0.95) 0%, rgba(13, 17, 23, 0) 100%);
  backdrop-filter: blur(10px);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-orange);
  text-decoration: none;
  letter-spacing: -0.02em;
  text-shadow: 0 0 20px var(--accent-orange);
  transition: var(--transition-smooth);
}

.brand:hover {
  text-shadow: 0 0 30px var(--accent-orange), 0 0 40px var(--accent-cyan);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-item a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: var(--transition-fast);
  position: relative;
}

.nav-item a::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
  transition: var(--transition-smooth);
}

.nav-item a:hover {
  color: var(--accent-cyan);
}

.nav-item a:hover::before {
  width: 100%;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}

.burger-line {
  width: 28px;
  height: 2px;
  background: var(--accent-orange);
  transition: var(--transition-smooth);
}

.burger.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
  animation: pulseGradient 8s ease-in-out infinite;
}

@keyframes pulseGradient {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  animation: slideInLeft 1s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  max-width: 600px;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
  animation: slideInRight 1s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.cta-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn {
  padding: 0.9rem 2rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
  color: var(--primary-bg);
  border: 1px solid transparent;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-neon), var(--shadow-cyan);
}

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

.btn-secondary:hover {
  background: var(--accent-cyan);
  color: var(--primary-bg);
  box-shadow: var(--shadow-cyan);
}

.section {
  padding: var(--space-xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: var(--space-sm);
  text-shadow: 0 0 15px var(--accent-cyan);
  text-align: center;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.diagonal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.feature-card {
  background: linear-gradient(135deg, var(--secondary-bg), var(--tertiary-bg));
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan), var(--accent-gold));
  transform: scaleX(0);
  transition: var(--transition-smooth);
}

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

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-cyan);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--accent-orange);
  margin-bottom: var(--space-md);
  display: block;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin-bottom: var(--space-sm);
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.asymmetric-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.content-block {
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.content-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.image-wrapper:hover img {
  transform: scale(1.05);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.course-card {
  background: var(--secondary-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 53, 0.2);
  transition: var(--transition-smooth);
  position: relative;
}

.course-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-orange);
  box-shadow: var(--shadow-neon);
}

.course-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.course-body {
  padding: var(--space-md);
}

.course-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin-bottom: var(--space-sm);
}

.course-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
}

.course-price {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-shadow: 0 0 10px var(--accent-gold);
}

.contact-section {
  background: linear-gradient(135deg, var(--secondary-bg), var(--primary-bg));
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.9rem;
  background: var(--primary-bg);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.checkbox-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
  color: var(--primary-bg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon), var(--shadow-cyan);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.info-block {
  padding: var(--space-md);
  background: var(--tertiary-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-orange);
}

.info-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin-bottom: var(--space-xs);
}

.info-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.info-link {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition-fast);
}

.info-link:hover {
  text-shadow: 0 0 10px var(--accent-cyan);
}

.map-container {
  margin-top: var(--space-lg);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

.map-container iframe {
  width: 100%;
  height: 350px;
  border: none;
}

.footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(255, 107, 53, 0.2);
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

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

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

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

.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  backdrop-filter: blur(5px);
}

.popup-box {
  background: var(--secondary-bg);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  border: 2px solid var(--accent-orange);
  box-shadow: var(--shadow-neon);
  position: relative;
}

.popup-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--accent-orange);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}

.popup-title {
  color: var(--accent-cyan);
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.popup-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.popup-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  margin-top: var(--space-md);
}

.popup-btn {
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.popup-btn-accept {
  background: var(--accent-cyan);
  color: var(--primary-bg);
}

.popup-btn-accept:hover {
  background: var(--accent-cyan);
  opacity: 0.9;
  transform: translateY(-2px);
}

.popup-btn-decline {
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--text-secondary);
}

.popup-btn-decline:hover {
  background: var(--text-secondary);
  color: var(--primary-bg);
  transform: translateY(-2px);
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: var(--transition-smooth);
}

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

@media (max-width: 968px) {
  .popup-buttons {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .popup-btn {
    width: 100%;
  }

  .nav-list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: var(--secondary-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition-smooth);
    border-left: 2px solid var(--accent-orange);
    display: none;
  }

  .nav-list.active {
    right: 0;
    display: flex;
  }

  body.nav-list-active {
    overflow: hidden;
  }

  .burger {
    display: flex;
  }

  .hero-grid,
  .asymmetric-layout,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

@media (max-width: 480px) {
  .hero-section {
    padding-top: 100px;
  }

  .cta-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

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

  .section-title {
    font-size: 1.5rem;
  }

  .brand {
    font-size: 1.2rem;
  }
}