/* ================================
   AI-АССИСТЕНТ ДЛЯ БИЗНЕСА - СТИЛИ
   Современный, продающий дизайн
   ================================ */

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --dark: #1e293b;
  --gray: #64748b;
  --light: #f1f5f9;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --shadow: 0 10px 40px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
}

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

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

/* ============ ТИПОГРАФИКА ============ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }

p { margin-bottom: 1rem; }

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

/* ============ КОНТЕЙНЕРЫ ============ */

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

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--light);
}

/* ============ КНОПКИ ============ */

.btn {
  display: inline-block;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  box-shadow: var(--shadow);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-large {
  padding: 20px 48px;
  font-size: 1.3rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* ============ ХЕДЕР ============ */

.header {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  color: var(--dark);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

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

/* ============ ГЕРОЙ ============ */

.hero {
  background: var(--gradient);
  color: var(--white);
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
  opacity: 0.3;
  pointer-events: none; /* клики проходят к форме и кнопкам */
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 32px;
  opacity: 0.95;
}

.highlight {
  color: #fbbf24;
  font-weight: 700;
}

/* ============ КАРТОЧКИ ============ */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.card {
  background: var(--white);
  padding: 32px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.card-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.card h3 {
  color: var(--primary);
  margin-bottom: 12px;
}

/* ============ ПРАЙСИНГ ============ */

.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.pricing-card {
  background: var(--white);
  border: 3px solid var(--light);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
}

.pricing-card:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: var(--white);
  padding: 8px 24px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin: 20px 0;
}

.price-old {
  font-size: 1.5rem;
  text-decoration: line-through;
  color: var(--gray);
  margin-bottom: 10px;
}

.features-list {
  list-style: none;
  margin: 24px 0;
  text-align: left;
}

.features-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--light);
  position: relative;
  padding-left: 30px;
}

.features-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
  font-size: 1.2rem;
}

/* ============ ПРЕИМУЩЕСТВА ============ */

.benefits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin: 60px 0;
}

.benefit-item {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.benefit-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

@media (max-width: 768px) {
  .benefits {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .problem-solution-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ============ ОТЗЫВЫ ============ */

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.testimonial {
  background: var(--white);
  padding: 32px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.2;
  font-family: Georgia, serif;
}

.testimonial-text {
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.2rem;
}

.author-info h4 {
  margin-bottom: 0;
  font-size: 1rem;
}

.author-info p {
  margin: 0;
  color: var(--gray);
  font-size: 0.9rem;
}

/* ============ CTA СЕКЦИЯ ============ */

.cta {
  background: var(--gradient);
  color: var(--white);
  text-align: center;
  padding: 80px 20px;
  border-radius: 20px;
  margin: 60px 0;
}

.cta h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: 32px;
  opacity: 0.95;
}

/* ============ ФУТЕР ============ */

.footer {
  background: var(--dark);
  color: var(--white);
  padding: 40px 0 20px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  list-style: none;
  margin-bottom: 20px;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.footer-links a:hover {
  opacity: 1;
}

/* ============ ФОРМЫ ============ */

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

.form-control {
  width: 100%;
  padding: 14px 20px;
  font-size: 1rem;
  border: 2px solid var(--light);
  border-radius: 8px;
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

/* ============ ТАЙМЕР ============ */

.countdown {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 30px 0;
}

.countdown-item {
  background: rgba(255,255,255,0.2);
  padding: 20px;
  border-radius: 12px;
  min-width: 80px;
}

.countdown-number {
  font-size: 2.5rem;
  font-weight: 700;
  display: block;
}

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

/* ============ БЕЙДЖИ ============ */

.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 5px;
}

.badge-success {
  background: var(--success);
  color: var(--white);
}

.badge-warning {
  background: var(--warning);
  color: var(--white);
}

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

/* ============ АНИМАЦИИ ============ */

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

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* ============ УТИЛИТЫ ============ */

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

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }
.mt-5 { margin-top: 60px; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }
.mb-5 { margin-bottom: 60px; }

.color-primary { color: var(--primary); }
.color-success { color: var(--success); }
.color-warning { color: var(--warning); }

.bg-light { background: var(--light); }
.bg-white { background: var(--white); }