:root {
  --primary: #667eea;
  --primary-dark: #5a67d8;
  --secondary: #764ba2;
  --dark: #1a202c;
  --gray-900: #1a202c;
  --gray-800: #2d3748;
  --gray-700: #4a5568;
  --gray-600: #718096;
  --gray-500: #a0aec0;
  --gray-400: #cbd5e0;
  --gray-300: #e2e8f0;
  --gray-200: #edf2f7;
  --gray-100: #f7fafc;
  --white: #ffffff;
  --success: #48bb78;
  --warning: #ed8936;
  --danger: #f56565;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-align: center;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(247,250,252,0.98) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(102, 126, 234, 0.15);
  z-index: 1000;
  border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

header::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0.8;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.logo img {
  width: 42px;
  height: 42px;
  filter: drop-shadow(0 2px 8px rgba(102, 126, 234, 0.3));
  transition: transform 0.3s ease;
}

.logo:hover img {
  transform: rotate(10deg) scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  color: var(--gray-700);
  font-weight: 600;
  position: relative;
  padding: 10px 18px;
  border-radius: 25px;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.nav-links a:hover {
  color: var(--primary);
  background: rgba(102, 126, 234, 0.08);
}

.nav-links a.active {
  color: var(--white);
  background: var(--gradient);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.35);
}

.nav-links a::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
  z-index: -1;
}

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

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
  background: rgba(102, 126, 234, 0.2);
}

.mobile-menu-btn span {
  width: 22px;
  height: 2.5px;
  background: var(--gradient);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hero {
  padding: 140px 0 80px;
  background: var(--gradient);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero-coding.jpg') center/cover;
  opacity: 0.15;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.hero-image img {
  border-radius: 15px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 60px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
}

.stat-label {
  opacity: 0.8;
  font-size: 0.9rem;
}

section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--gray-900);
  margin-bottom: 15px;
}

.section-header p {
  color: var(--gray-600);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.courses-section {
  background: var(--gray-100);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.course-card {
  background: var(--white);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.course-image {
  height: 200px;
  overflow: hidden;
}

.course-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.course-card:hover .course-image img {
  transform: scale(1.1);
}

.course-content {
  padding: 25px;
}

.course-tag {
  display: inline-block;
  padding: 5px 12px;
  background: var(--gray-200);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.course-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--gray-900);
}

.course-content p {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid var(--gray-200);
}

.course-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.course-duration {
  color: var(--gray-500);
  font-size: 0.9rem;
}

.features-section {
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.feature-card {
  text-align: center;
  padding: 30px 20px;
}

.feature-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  color: var(--white);
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--gray-900);
}

.feature-card p {
  color: var(--gray-600);
  font-size: 0.95rem;
}

.about-section {
  background: var(--gray-100);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image img {
  border-radius: 15px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-text h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: var(--gray-900);
}

.about-text p {
  color: var(--gray-600);
  margin-bottom: 15px;
}

.about-list {
  list-style: none;
  margin: 25px 0;
}

.about-list li {
  padding: 10px 0;
  padding-left: 30px;
  position: relative;
  color: var(--gray-700);
}

.about-list li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

.team-section {
  background: var(--white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.team-card {
  text-align: center;
  padding: 30px;
  border-radius: 15px;
  background: var(--gray-100);
  transition: all 0.3s ease;
}

.team-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.team-image {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 20px;
  border: 4px solid var(--white);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.team-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card h3 {
  font-size: 1.2rem;
  color: var(--gray-900);
  margin-bottom: 5px;
}

.team-card .role {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 15px;
}

.team-card p {
  color: var(--gray-600);
  font-size: 0.9rem;
}

.cta-section {
  background: var(--gradient);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.cta-section p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-section {
  background: var(--gray-100);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--gray-900);
}

.contact-info p {
  color: var(--gray-600);
  margin-bottom: 30px;
}

.contact-details {
  list-style: none;
}

.contact-details li {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px 0;
  border-bottom: 1px solid var(--gray-300);
}

.contact-details li:last-child {
  border-bottom: none;
}

.contact-icon {
  width: 45px;
  height: 45px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
}

.contact-text strong {
  display: block;
  color: var(--gray-800);
  margin-bottom: 3px;
}

.contact-text span {
  color: var(--gray-600);
}

.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
  font-size: 1.5rem;
  margin-bottom: 25px;
  color: var(--gray-900);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--gray-700);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--gray-300);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-submit {
  width: 100%;
  padding: 15px;
  font-size: 1.1rem;
}

footer {
  background: linear-gradient(180deg, #0f1729 0%, #1a202c 50%, #0d1321 100%);
  color: var(--gray-400);
  padding: 0;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
}

footer::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.footer-top {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.08) 100%);
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  position: relative;
}

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

.footer-cta-text h3 {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.footer-cta-text p {
  color: var(--gray-400);
  margin: 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
  padding: 60px 0 50px;
  position: relative;
  z-index: 1;
}

.footer-brand {
  padding-right: 40px;
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 20px;
  -webkit-text-fill-color: var(--white);
}

.footer-brand .logo span {
  background: linear-gradient(135deg, #fff 0%, #a0aec0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  line-height: 1.8;
  margin-bottom: 25px;
  font-size: 0.95rem;
}

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

.footer-social a {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-300);
  transition: all 0.3s ease;
  font-weight: 600;
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--gradient);
  border-color: transparent;
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.35);
}

.footer-column h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 700;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--gradient);
  border-radius: 2px;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 14px;
}

.footer-column a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.footer-column a::before {
  content: '';
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.footer-column a:hover {
  color: var(--primary);
  transform: translateX(5px);
}

.footer-column a:hover::before {
  width: 12px;
}

.footer-bottom {
  background: rgba(0,0,0,0.3);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 25px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 1;
}

.footer-bottom p {
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 25px;
}

.footer-links a {
  font-size: 0.9rem;
  padding: 5px 0;
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

.footer-links a:hover::after {
  width: 100%;
}

.page-header {
  padding: 140px 0 60px;
  background: var(--gradient);
  color: var(--white);
  text-align: center;
}

.page-header h1 {
  font-size: 2.8rem;
  margin-bottom: 15px;
}

.page-header p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  margin-top: 20px;
  opacity: 0.8;
}

.breadcrumb a {
  color: var(--white);
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.legal-content {
  padding: 60px 0;
}

.legal-content h2 {
  font-size: 1.8rem;
  color: var(--gray-900);
  margin: 40px 0 20px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content h3 {
  font-size: 1.3rem;
  color: var(--gray-800);
  margin: 30px 0 15px;
}

.legal-content p {
  color: var(--gray-700);
  margin-bottom: 15px;
}

.legal-content ul {
  margin: 15px 0 15px 30px;
  color: var(--gray-700);
}

.legal-content li {
  margin-bottom: 10px;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--gray-900);
  color: var(--white);
  padding: 20px;
  z-index: 9999;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.cookie-content p {
  margin: 0;
  flex: 1;
}

.cookie-content a {
  color: var(--primary);
  text-decoration: underline;
}

.cookie-buttons {
  display: flex;
  gap: 15px;
}

.cookie-buttons button {
  padding: 10px 25px;
  border-radius: 5px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}

.cookie-accept {
  background: var(--primary);
  color: var(--white);
}

.cookie-accept:hover {
  background: var(--primary-dark);
}

.cookie-decline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--gray-600);
}

.cookie-decline:hover {
  background: var(--gray-800);
}

.form-success {
  display: none;
  background: var(--success);
  color: var(--white);
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}

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

.form-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 5px;
  display: none;
}

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

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--danger);
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-image {
    display: none;
  }

  .hero-buttons {
    justify-content: center;
  }

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

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

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(247,250,252,0.98) 100%);
    flex-direction: column;
    padding: 25px 20px;
    gap: 8px;
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.15);
    border-bottom: 3px solid;
    border-image: var(--gradient) 1;
  }

  .nav-links a {
    width: 100%;
    text-align: center;
    padding: 12px 20px;
  }

  .nav-links a.active {
    border-radius: 10px;
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero {
    padding: 130px 0 60px;
  }

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

  .stats {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .stat-number {
    font-size: 2rem;
  }

  section {
    padding: 60px 0;
  }

  .section-header h2 {
    font-size: 1.8rem;
  }

  .courses-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }

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

  .about-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-image {
    order: -1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-top {
    padding: 30px 0;
  }

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

  .footer-cta-text h3 {
    font-size: 1.3rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 35px;
    padding: 40px 0;
  }

  .footer-brand {
    padding-right: 0;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-column h4::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-column a::before {
    display: none;
  }

  .footer-column a:hover {
    transform: none;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 15px;
  }

  .footer-links {
    justify-content: center;
  }

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

  .page-header h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 1.7rem;
  }

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

  .btn {
    width: 100%;
  }

  .contact-form {
    padding: 25px;
  }

  .cookie-buttons {
    flex-direction: column;
    width: 100%;
  }

  .cookie-buttons button {
    width: 100%;
  }
}