:root {
  /* Цветовая палитра */
  --primary: #7c4dff;
  --primary-dark: #5e35b1;
  --primary-light: #b388ff;
  --secondary: #ff4081;
  --accent: #ff9100;
  --dark: #121212;
  --darker: #0a0a0a;
  --light: #ffffff;
  --gray: #b0bec5;
  --success: #00c853;
  --warning: #ff7043;
  --error: #ff5252;
  
  /* Размеры и отступы */
  --sidebar-width: 280px;
  --border-radius: 12px;
  --section-spacing: 40px;
  
  /* Эффекты */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.2);
  --glass-bg: rgba(18, 18, 18, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
}

/* Основная структура */
html, body {
  height: 100%;
}

body {
  background-color: var(--darker);
  color: var(--light);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
}

/* Сайдбар */
.sidebar {
  width: var(--sidebar-width);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  padding: 25px 0;
  z-index: 1000;
  overflow-y: auto;
  transition: var(--transition);
  border-right: 1px solid var(--glass-border);
}

.sidebar-header {
  display: flex;
  align-items: center;
  padding: 0 25px 30px;
  margin-bottom: 15px;
}

.logo {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
  margin-right: 15px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.logo:hover {
  transform: rotate(15deg);
}

.sidebar-title {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.menu-category {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 20px 25px 12px;
  margin-top: 15px;
  font-weight: 600;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 14px 25px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
  margin: 6px 15px;
  border-radius: 8px;
  position: relative;
}

.menu-item:hover {
  background: rgba(124, 77, 255, 0.1);
  color: white;
  transform: translateX(5px);
}

.menu-item.active {
  background: rgba(124, 77, 255, 0.2);
  color: white;
  font-weight: 500;
}

.menu-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.menu-item i {
  font-size: 1.2rem;
  width: 26px;
  margin-right: 15px;
  color: var(--primary-light);
}

/* Основной контент */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--section-spacing);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

/* Герой секция */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--border-radius);
  padding: 60px;
  margin-bottom: var(--section-spacing);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
  animation: gradientShift 8s ease infinite;
  background-size: 200% 200%;
}

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

.hero::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  z-index: 0;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  font-weight: 800;
  line-height: 1.2;
  position: relative;
  z-index: 1;
  background: linear-gradient(to right, white, #e0e0e0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  max-width: 700px;
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  justify-content: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  background: var(--light);
  color: var(--primary-dark);
  box-shadow: var(--shadow);
  font-weight: 700;
}

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

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
  opacity: 0;
  transition: var(--transition);
  z-index: -1;
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--light);
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(5px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn i {
  margin-right: 10px;
  font-size: 1.1rem;
}

.btn-group {
  display: flex;
  gap: 20px;
  margin-top: 30px;
}

/* Статистика */
.stats-container {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 35px;
  margin-bottom: var(--section-spacing);
  box-shadow: var(--shadow);
  border: 1px solid var(--glass-border);
}

.section-title {
  font-size: 1.8rem;
  margin-bottom: 25px;
  color: white;
  font-weight: 700;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 70px;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  border-radius: 2px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 30px;
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

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

.stat-value {
  font-size: 3.2rem;
  font-weight: 800;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
  line-height: 1;
}

.stat-label {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

/* Карточки особенностей */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 25px;
  margin-bottom: var(--section-spacing);
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 35px;
  transition: var(--transition);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: rgba(124, 77, 255, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  color: var(--primary);
  font-size: 1.6rem;
  border: 1px solid rgba(124, 77, 255, 0.3);
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  transform: rotate(10deg) scale(1.1);
  background: rgba(124, 77, 255, 0.2);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: white;
  font-weight: 700;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 25px;
  line-height: 1.7;
  font-size: 1.05rem;
}

.feature-card .price {
  color: var(--primary);
  font-weight: 700;
  margin: 25px 0;
  font-size: 1.4rem;
}

/* Футер */
.footer {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  padding: 25px 35px;
  margin-top: auto;
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  border-top: 1px solid var(--glass-border);
  width: 100%;
  box-sizing: border-box;
}

.footer p {
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-copyright {
  margin-top: 20px;
  opacity: 0.8;
  font-size: 0.9rem;
}

@media (min-width: 993px) {
  .footer {
    width: calc(100% - var(--sidebar-width));
    margin-left: var(--sidebar-width);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
  }
}

/* Анимации */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeIn 0.6s forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* Адаптивность */
@media (max-width: 1200px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: 1000;
    transition: var(--transition);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: 30px;
  }
  
  .hero {
    padding: 50px 35px;
  }
  
  .menu-toggle {
    display: flex;
  }

  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .feature-card {
    padding: 30px;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
}

@media (max-width: 576px) {
  .hero {
    padding: 40px 25px;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .main-content {
    padding: 25px 20px;
  }
  
  .stats-container,
  .feature-card {
    padding: 25px;
  }
  
  .footer {
    padding: 20px 15px;
  }
}

/* Кнопка меню для мобильных */
.menu-toggle {
  position: fixed;
  top: 25px;
  right: 25px;
  width: 52px;
  height: 52px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1001;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: none;
  outline: none;
}

.menu-toggle:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.menu-toggle i {
  font-size: 1.4rem;
}

/* Сообщение об ошибке */
.error-message {
  background: rgba(255, 82, 82, 0.1);
  border-left: 4px solid var(--error);
  padding: 18px 25px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  margin: 25px 0;
}

.error-message i {
  color: var(--error);
  margin-right: 15px;
  font-size: 1.6rem;
}

.error-message p {
  color: var(--error);
  margin: 0;
  font-weight: 600;
  font-size: 1rem;
}

/* Дополнительные эффекты */
a, button {
  transition: var(--transition);
}

/* Плавный скролл */
html {
  scroll-behavior: smooth;
}

/* Подсветка активного элемента */
:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

/* Стили для секции скриншотов */
.screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}