/* ================================================================= *
 * БАЗОВЫЕ ПЕРЕМЕННЫЕ И СБРОС СТИЛЕЙ
 * ================================================================= */
:root {
  --bdu-primary: #FF6B35;
  --bdu-primary-hover: #e85a24;
  --bdu-dark: #0a1a2e;
  --bdu-light: #f8fafc;
  --bdu-gray: #64748b;
  --bdu-gray-light: #94a3b8;
  --bdu-border: #e2e8f0;
  --bdu-white: #ffffff;
  --bdu-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --bdu-shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.1);
  --bdu-radius: 16px;
  --bdu-container-width: 1200px;
}

/* Общие контейнеры и сетки */
.bdu-container {
  max-width: var(--bdu-container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  box-sizing: border-box;
}

.bdu-grid {
  display: grid;
  gap: 2rem;
}

.bdu-grid-2 { grid-template-columns: repeat(2, 1fr); }
.bdu-grid-3 { grid-template-columns: repeat(3, 1fr); }
.bdu-grid-4 { grid-template-columns: repeat(4, 1fr); }

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

/* Общие заголовки секций */
.bdu-section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}

.bdu-section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  color: var(--bdu-dark);
  margin: 0 0 0.75rem;
  font-weight: 700;
  line-height: 1.2;
}

.bdu-section-subtitle {
  font-size: 1.05rem;
  color: var(--bdu-gray);
  margin: 0;
  line-height: 1.6;
}

/* Кнопки */
.bdu-btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: all 0.25s ease;
  cursor: pointer;
  font-size: 0.95rem;
}

.bdu-btn-primary {
  background-color: var(--bdu-primary);
  color: var(--bdu-white);
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
}

.bdu-btn-primary:hover {
  background-color: var(--bdu-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.45);
}

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

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

.bdu-btn-large {
  padding: 1.1rem 2.5rem;
  font-size: 1.05rem;
}

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


/* ================================================================= *
 * 1. HEADER (ШАПКА)
 * ================================================================= */
.bdu-header {
  background: var(--bdu-white);
  border-bottom: 1px solid var(--bdu-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.bdu-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.bdu-logo-block {
  display: flex;
  flex-direction: column;
}

.bdu-logo-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--bdu-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bdu-logo-tagline {
  font-size: 0.75rem;
  color: var(--bdu-gray);
}

.bdu-header-info {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.bdu-header-region {
  font-size: 0.85rem;
  color: var(--bdu-gray);
}

.bdu-header-phone {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bdu-dark);
  text-decoration: none;
}

.bdu-header-phone:hover {
  color: var(--bdu-primary);
}

.bdu-header-email {
  font-size: 0.85rem;
  color: var(--bdu-gray);
  text-decoration: none;
}

.bdu-header-email:hover {
  color: var(--bdu-primary);
}


/* ================================================================= *
 * 1. HERO-БЛОК
 * ================================================================= */
.bdu-hero {
  padding: 4rem 0 5rem;
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  position: relative;
  overflow: hidden;
}

.bdu-hero-badge {
  display: inline-block;
  background-color: rgba(255, 107, 53, 0.1);
  color: var(--bdu-primary);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.bdu-hero-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  color: var(--bdu-dark);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  max-width: 900px;
}

.bdu-hero-description {
  font-size: 1.15rem;
  color: var(--bdu-gray);
  line-height: 1.6;
  margin: 0 0 2rem;
  max-width: 800px;
}

.bdu-hero-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 2.5rem;
  max-width: 900px;
}

.bdu-hero-feature-item {
  background: var(--bdu-white);
  padding: 1.25rem;
  border-radius: var(--bdu-radius);
  border: 1px solid var(--bdu-border);
}

.bdu-hero-feature-title {
  display: block;
  font-weight: 700;
  color: var(--bdu-dark);
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
}

.bdu-hero-feature-text {
  font-size: 0.85rem;
  color: var(--bdu-gray);
  line-height: 1.4;
}

.bdu-hero-actions {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.bdu-hero-phone-link {
  color: var(--bdu-dark);
  font-weight: 600;
  text-decoration: none;
}

.bdu-hero-phone-link:hover {
  color: var(--bdu-primary);
}


/* ================================================================= *
 * 2. ПРЕИМУЩЕСТВА
 * ================================================================= */
.bdu-features {
  padding: 5rem 0;
  background: var(--bdu-white);
}

.bdu-feature-card {
  background: var(--bdu-light);
  padding: 2.5rem 2rem;
  border-radius: var(--bdu-radius);
  border: 1px solid var(--bdu-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.bdu-feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bdu-dark);
  margin: 0 0 0.75rem;
}

.bdu-feature-text {
  font-size: 0.95rem;
  color: var(--bdu-gray);
  margin: 0;
  line-height: 1.5;
}


/* ================================================================= *
 * 3. ВАРИАНТЫ ОСТЕКЛЕНИЯ
 * ================================================================= */
.bdu-options {
  padding: 5rem 0;
  background: var(--bdu-light);
}

.bdu-option-card {
  background: var(--bdu-white);
  border-radius: var(--bdu-radius);
  padding: 2.5rem;
  border: 1px solid var(--bdu-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--bdu-shadow);
}

.bdu-option-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--bdu-dark);
  margin: 0 0 0.5rem;
}

.bdu-option-brands {
  font-size: 0.85rem;
  color: var(--bdu-primary);
  font-weight: 600;
  display: block;
  margin-bottom: 1.25rem;
}

.bdu-option-desc {
  color: var(--bdu-gray);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

.bdu-option-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}

.bdu-option-feature-item {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: var(--bdu-dark);
}

.bdu-option-feature-item::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--bdu-primary);
  font-weight: bold;
}


/* ================================================================= *
 * 4. ЦЕНЫ
 * ================================================================= */
.bdu-pricing {
  padding: 5rem 0;
  background: var(--bdu-white);
}

.bdu-price-card {
  background: var(--bdu-light);
  border-radius: var(--bdu-radius);
  padding: 2rem;
  border: 1px solid var(--bdu-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
}

.bdu-price-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bdu-dark);
  margin: 0 0 1rem;
}

.bdu-price-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--bdu-primary);
  margin-bottom: 1rem;
}

.bdu-price-desc {
  font-size: 0.9rem;
  color: var(--bdu-gray);
  line-height: 1.5;
  margin: 0 0 1.5rem;
}

.bdu-pricing-note {
  margin-top: 2.5rem;
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
}

.bdu-note-text {
  font-size: 0.85rem;
  color: var(--bdu-gray-light);
  line-height: 1.5;
  margin: 0;
}


/* ================================================================= *
 * 5. ПОРТФОЛИО
 * ================================================================= */
.bdu-portfolio {
  padding: 5rem 0;
  background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
}

.bdu-portfolio-card {
  background: var(--bdu-white);
  border-radius: var(--bdu-radius);
  overflow: hidden;
  box-shadow: var(--bdu-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

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

.bdu-portfolio-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bdu-border);
}

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

.bdu-portfolio-card:hover .bdu-portfolio-img img {
  transform: scale(1.05);
}

.bdu-portfolio-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}

.bdu-portfolio-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.bdu-badge {
  background: var(--bdu-primary);
  color: var(--bdu-white);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.bdu-portfolio-city {
  font-size: 0.8rem;
  color: var(--bdu-gray-light);
}

.bdu-portfolio-title {
  font-size: 1.1rem;
  color: var(--bdu-dark);
  margin: 0 0 0.5rem;
  font-weight: 700;
}

.bdu-portfolio-desc {
  color: var(--bdu-gray);
  font-size: 0.9rem;
  line-height: 1.4;
  margin: 0 0 1rem;
}

.bdu-portfolio-link {
  color: var(--bdu-primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.bdu-portfolio-link:hover {
  text-decoration: underline;
}

.bdu-portfolio-footer {
  margin-top: 3rem;
}


/* ================================================================= *
 * 6. ДОПОЛНИТЕЛЬНЫЕ УСЛУГИ
 * ================================================================= */
.bdu-services {
  padding: 5rem 0;
  background: var(--bdu-white);
}

.bdu-service-card {
  background: var(--bdu-light);
  border-radius: var(--bdu-radius);
  padding: 2rem;
  border: 1px solid var(--bdu-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bdu-service-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bdu-dark);
  margin: 0 0 0.75rem;
}

.bdu-service-desc {
  font-size: 0.9rem;
  color: var(--bdu-gray);
  line-height: 1.5;
  margin: 0 0 1.5rem;
}

.bdu-service-link {
  font-size: 0.9rem;
  color: var(--bdu-primary);
  font-weight: 600;
  text-decoration: none;
}

.bdu-service-link:hover {
  text-decoration: underline;
}


/* ================================================================= *
 * 7. ЭТАПЫ РАБОТЫ
 * ================================================================= */
.bdu-steps {
  padding: 5rem 0;
  background: var(--bdu-light);
}

.bdu-step-card {
  background: var(--bdu-white);
  border-radius: var(--bdu-radius);
  padding: 2rem;
  border: 1px solid var(--bdu-border);
  position: relative;
}

.bdu-step-number {
  width: 40px;
  height: 40px;
  background: rgba(255, 107, 53, 0.1);
  color: var(--bdu-primary);
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.1rem;
}

.bdu-step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bdu-dark);
  margin: 0 0 0.75rem;
}

.bdu-step-desc {
  font-size: 0.9rem;
  color: var(--bdu-gray);
  line-height: 1.5;
  margin: 0;
}


/* ================================================================= *
 * 8. FINAL CTA + КОНТАКТЫ
 * ================================================================= */
.bdu-cta-section {
  padding: 5rem 0 6rem;
  background: var(--bdu-dark);
  color: var(--bdu-white);
}

.bdu-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  color: var(--bdu-white);
  margin: 0 0 1rem;
  line-height: 1.2;
}

.bdu-cta-desc {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0 0 2rem;
}

.bdu-cta-desc strong {
  color: var(--bdu-white);
}

.bdu-contacts-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--bdu-radius);
  padding: 2.5rem;
}

.bdu-contacts-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--bdu-white);
  margin: 0 0 1.5rem;
}

.bdu-contacts-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.bdu-contacts-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.bdu-contacts-text-wrap {
  display: flex;
  flex-direction: column;
}

.bdu-contacts-label {
  font-size: 0.8rem;
  color: #94a3b8;
}

.bdu-contacts-link, .bdu-contacts-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--bdu-white);
  text-decoration: none;
}

.bdu-contacts-link:hover {
  color: var(--bdu-primary);
}

.bdu-contacts-note {
  font-size: 0.85rem;
  color: #94a3b8;
  margin: 0;
  line-height: 1.5;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.25rem;
}


/* ================================================================= *
 * АДАПТИВНЫЕ МЕДИА-ЗАПРОСЫ
 * ================================================================= */
@media (max-width: 1024px) {
  .bdu-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .bdu-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .bdu-hero-features { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .bdu-header-inner {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }
  .bdu-header-info {
    flex-direction: column;
    gap: 0.5rem;
  }
  .bdu-grid-4, 
  .bdu-grid-3, 
  .bdu-grid-2 { 
    grid-template-columns: 1fr; 
  }
  .bdu-hero-actions {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 1rem;
  }
}