/* ===== CSS VARIABLES ===== */
:root {
  --primary: #667eea;
  --primary-dark: #5a6fd8;
  --secondary: #764ba2;
  --accent: #ffd84d;
  --text-dark: #231f1f;
  --text-white: #ffffff;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-light: rgba(255, 255, 255, 0.2);
  
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #8454b4 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #8454b4 100%);
  --gradient-text: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
  
  --section-padding: 100px 0;
  --container-padding: 0 40px;
  
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-sm: 0.9rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.1rem;
  --font-size-xl: 1.2rem;
  --font-size-2xl: 1.4rem;
  --font-size-3xl: 1.7rem;
  --font-size-4xl: 2.2rem;
  --font-size-5xl: 2.5rem;
  
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 15px 40px rgba(0, 0, 0, 0.15);
  --shadow-large: 0 20px 50px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 10px 25px rgba(102, 126, 234, 0.3);
  --transition: all 0.3s ease;
}

/* ===== RESET & BASE STYLES ===== */
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  font-family: var(--font-family);
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

/* ===== LAYOUT UTILITIES ===== */
.container {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: var(--container-padding);
}

.section-padding {
  padding: var(--section-padding);
}

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

.text-primary {
  color: var(--primary);
}

.text-white {
  color: var(--text-white);
}

/* ===== HERO SECTION ===== */
.hero-section {
  background: var(--gradient-hero);
  color: var(--text-white);
  padding: 40px 0;
  position: relative;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* ===== AUTH BUTTONS - DESKTOP ===== */
.auth-buttons {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 12px;
  z-index: 1000;
}

.auth-buttons .btn {
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  text-decoration: none;
  border: 2px solid;
  font-size: 0.9rem;
  position: relative;
  z-index: 1001;
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-block;
}

.auth-buttons .btn-outline-primary {
  border-color: rgba(255, 255, 255, 0.8);
  color: #ffffff;
  background: transparent;
}

.auth-buttons .btn-outline-primary:hover {
  background-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-2px);
}

.auth-buttons .btn-primary {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  color: #667eea;
  font-weight: 700;
}

.auth-buttons .btn-primary:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

/* ===== MOBILE BURGER MENU ===== */
.mobile-burger {
  display: none;
  position: fixed;
  top: 15px;
  right: 15px;
  z-index: 9999;
}

.burger-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10001;
}

.burger-toggle span {
  display: block;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

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

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

.mobile-menu {
  display: none;
  flex-direction: column;
  align-items: center;
  background: rgba(0, 0, 0, 0.95);
  padding: 1rem;
  border-radius: 12px;
  margin-top: 0.5rem;
  width: 180px;
  backdrop-filter: blur(10px);
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 10000;
}

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

.mobile-menu .btn {
  width: 100%;
  margin-bottom: 0.5rem;
  color: #fff;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 8px;
  text-align: center;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  white-space: nowrap;
  flex-shrink: 0;
  display: block;
}

.mobile-menu .btn.btn-outline-primary {
  border: 2px solid #fff;
  background: transparent;
}

.mobile-menu .btn.btn-outline-primary:hover {
  background-color: #fff;
  color: #000;
}

.mobile-menu .btn-primary {
  background: #fff;
  color: #667eea;
  font-weight: 600;
  border: 2px solid #fff;
}

.mobile-menu .btn-primary:hover {
  background: #f8f9fa;
}

/* Hero Content */
.hero-content {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-text {
  padding-right: 30px;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: 25px;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.5;
  font-weight: 400;
}

.hero-cta {
  margin-top: 25px;
}

.cta-button {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-white);
  padding: 14px 30px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-size: var(--font-size-base);
  backdrop-filter: blur(10px);
}

.cta-button:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  padding: 30px;
  backdrop-filter: blur(15px);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-medium);
  transform: perspective(800px) rotateY(-5deg) rotateX(5deg);
  transition: var(--transition);
}

.hero-card:hover {
  transform: perspective(800px) rotateY(0deg) rotateX(0deg);
}

.card-content {
  text-align: center;
}

.ai-badge {
  background: var(--gradient-primary);
  color: var(--text-white);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: var(--font-size-xl);
  margin: 0 auto 15px;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.hero-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 8px;
  color: #ffffff;
}

.hero-card p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-sm);
}

/* ===== BENEFITS SECTION ===== */
.benefits-section {
  background: var(--bg-white);
  padding: var(--section-padding);
}

.section-title {
  text-align: center;
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 15px;
  padding: var(--container-padding);
}

.section-subtitle {
  text-align: center;
  color: var(--text-dark);
  font-size: var(--font-size-xl);
  max-width: 600px;
  margin: 0 auto 50px;
  line-height: 1.6;
  padding: var(--container-padding);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--container-padding);
}

.benefit-card {
  background: var(--bg-white);
  border-radius: var(--border-radius-xl);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.benefit-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-large);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.benefit-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 15px;
}

.benefit-description {
  color: var(--text-dark);
  line-height: 1.6;
  font-size: var(--font-size-base);
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials-section {
  background: var(--bg-light);
  padding: var(--section-padding);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 50px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--container-padding);
}

.testimonial-card {
  background: var(--bg-white);
  border-radius: 20px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.testimonial-avatar {
  width: 100px;
  height: 100px;
  border-radius: 12%;
  object-fit: cover;
}

.testimonial-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-dark);
  margin: 0;
}

.testimonial-role {
  font-size: 0.9rem;
  color: #666;
  margin: 0;
}

.testimonial-text {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.4;
  text-align: left;
}

/* ===== PRICING SECTION ===== */
.pricing-section {
  background: var(--bg-white);
  padding: var(--section-padding);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 50px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--container-padding);
}

.pricing-card {
  background: var(--bg-white);
  border-radius: var(--border-radius-xl);
  padding: 40px 30px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 280px;
  margin: 0 auto;
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-large);
}

.pricing-card.featured {
  border-color: var(--primary);
  background: var(--gradient-primary);
  color: var(--text-white);
  transform: scale(1.05);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-10px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--text-white);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  z-index: 3;
}

.pricing-header {
  margin-bottom: 25px;
}

.pricing-icon {
  font-size: 3rem;
  margin-bottom: 15px;
  height: 60px;
}

.pricing-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.pricing-card.featured .pricing-title {
  color: var(--text-white);
}

.pricing-slides {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  font-weight: 500;
}

.pricing-card.featured .pricing-slides {
  color: rgba(255, 255, 255, 0.9);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 25px 0;
  text-align: left;
  flex-grow: 1;
}

.pricing-features li {
  padding: 12px 0;
  color: var(--text-dark);
  font-size: var(--font-size-base);
  line-height: 1.4;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  padding-left: 25px;
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.pricing-card.featured .pricing-features li {
  color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-card.featured .pricing-features li::before {
  color: var(--accent);
}

.pricing-price {
  margin: 25px 0;
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
}

.pricing-card.featured .price {
  color: var(--text-white);
}

.pricing-btn {
  display: block;
  background: var(--primary);
  color: var(--text-white);
  border: none;
  border-radius: var(--border-radius);
  padding: 16px 30px;
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  width: 100%;
  margin-top: auto;
}

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

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

.pricing-btn.primary:hover {
  background: #f8f9fa;
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.3);
}

/* ===== SUPPORT SECTION ===== */
.support-section {
  background: var(--bg-light);
  padding: var(--section-padding);
  display: flex;
  justify-content: center;
}

.support-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
  background: #fff;
}

.support-left {
  flex: 1;
  min-width: 300px;
  padding: 4rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  position: relative;
}

.support-left::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 70%;
  background: linear-gradient(to bottom, transparent, #e0e0e0, transparent);
}

.support-right {
  flex: 1;
  min-width: 300px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 4rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.support-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.support-right .support-title {
  background: linear-gradient(135deg, #fff, #f0f0f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.support-description {
  font-size: 1.15rem;
  opacity: 0.85;
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.support-left .support-description {
  color: #666;
}

.support-right .support-description {
  color: rgba(255, 255, 255, 0.9);
}

.support-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #667eea;
  text-decoration: none;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  padding: 8px 0;
}

.support-email:hover {
  color: #5a6fd8;
  transform: translateX(5px);
}

.support-right .support-email {
  color: #ffd84d;
}

.support-right .support-email:hover {
  color: #ffcd00;
}

/* Меняем цвет кнопок на белом фоне */
.auth-buttons.scrolled .btn-outline-primary {
  border-color: var(--primary) !important;
  color: var(--primary) !important;
}

.auth-buttons.scrolled .btn-primary {
  background: var(--primary) !important;
  color: white !important;
}

/* Для мобильного меню тоже */
.mobile-menu.scrolled .btn-outline-primary {
  border-color: var(--primary) !important;
  color: var(--primary) !important;
}

.mobile-menu.scrolled .btn-primary {
  background: var(--primary) !important;
  color: white !important;
}

/* ===== MOBILE ADAPTATION ===== */
@media (max-width: 1200px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }
  
  .pricing-card.featured {
    transform: scale(1.02);
  }
}

@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }

  .hero-text {
    padding-right: 0;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-card {
    transform: none;
    max-width: 280px;
    margin: 0 auto;
  }

  /* Всегда скрываем десктопные кнопки на мобильных */
  .auth-buttons {
    display: none !important;
  }
  
  /* Всегда показываем бургер-меню на мобильных */
  .mobile-burger {
    display: flex !important;
  }
}

@media (min-width: 969px) {
  .mobile-burger {
    display: none !important;
  }
  
  .auth-buttons {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
    --container-padding: 0 20px;
  }

  .hero-section {
    min-height: 45vh;
    padding: 30px 20px;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .section-title {
    font-size: 2rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 400px;
  }
  
  .pricing-card {
    max-width: 100%;
    padding: 25px 20px;
  }
  
  .pricing-card.featured {
    transform: none;
    order: -1;
  }

  .testimonials-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .support-container {
    flex-direction: column;
    margin: 0 1rem;
    border-radius: 16px;
  }
  
  .support-left,
  .support-right {
    padding: 3rem 2rem;
  }
  
  .support-left::after {
    display: none;
  }
}

@media (max-width: 480px) {
  .pricing-grid {
    gap: 15px;
  }
  
  .pricing-card {
    padding: 20px 15px;
  }
  
  .price {
    font-size: 2rem;
  }
  
  .pricing-title {
    font-size: var(--font-size-xl);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .section-title {
    font-size: 1.8rem;
  }
}