/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --color-primary:      #1c2635;
  --color-primary-mid:  #243044;
  --color-accent:       #2e7d32;
  --color-accent-hover: #1b5e20;
  --color-accent-pale:  rgba(46, 125, 50, 0.06);
  --color-text:         #2c2c2c;
  --color-muted:        #6c757d;
  --color-bg:           #ffffff;
  --color-bg-alt:       #f4f6f8;
  --color-bg-gray:      #eef0f3;
  --color-border:       #dee2e6;
  --color-white:        #ffffff;

  --icon-brown:  #8b4513;
  --icon-orange: #e67e22;
  --icon-green:  #2e7d32;

  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               Oxygen, Ubuntu, Cantarell, sans-serif;

  --shadow-sm: 0 1px 5px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.11);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);

  --radius-sm: 6px;
  --radius-md: 12px;

  --transition: 0.25s ease;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-text-size-adjust: 100%;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

img { max-width: 100%; height: auto; display: block; }
ul  { list-style: none; }
address { font-style: normal; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
}

/* ============================================================
   Site Header
   ============================================================ */
.site-header {
  background: var(--color-primary);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-top {
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.brand-link {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--color-white);
  text-transform: uppercase;
  line-height: 1.2;
}

.brand-city {
  font-size: 0.85rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 1px;
}

.header-tel {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: 0.5px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.35);
  padding-bottom: 2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}

.header-tel:hover {
  color: #a5d6a7;
  border-color: #a5d6a7;
}

/* ============================================================
   Navigation
   ============================================================ */
.site-nav {
  background: var(--color-primary-mid);
}

.site-nav .navbar-nav {
  gap: 0.25rem;
}

.site-nav .nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 0.55rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.site-nav .nav-link:hover,
.site-nav .nav-link.active {
  color: var(--color-white) !important;
  background: rgba(255, 255, 255, 0.1);
}

.navbar-toggler {
  border-color: rgba(255, 255, 255, 0.3);
  padding: 0.35rem 0.6rem;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.15rem rgba(255, 255, 255, 0.25);
}

/* ============================================================
   Ad Section
   ============================================================ */
.ad-section {
  padding: 0.5rem 0;
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero-section {
  background: var(--color-bg-alt);
  padding: 3rem 0;
  text-align: center;
}

.hero-title {
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 1px;
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  font-size: clamp(0.85rem, 2vw, 1rem);
  font-weight: 400;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.9;
}

/* ============================================================
   Features Section
   ============================================================ */
.features-section {
  padding: 3.5rem 0;
  background: var(--color-bg-gray);
}

.feature-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  height: 100%;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 1rem;
}

.feature-icon svg {
  transition: transform var(--transition);
}

.feature-card:hover .feature-icon svg {
  transform: scale(1.12);
}

.feature-title {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--color-primary);
}

/* ============================================================
   Parts Section
   ============================================================ */
.parts-section {
  padding: 3rem 0;
  text-align: center;
  background: var(--color-bg);
}

.section-heading {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  margin-bottom: 0.85rem;
}

.parts-brands {
  font-size: 1.05rem;
  font-weight: 600;
  color: #c0392b;
  letter-spacing: 0.5px;
  line-height: 1.7;
}

.delivery-note {
  margin-top: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-muted);
  font-weight: 500;
}

/* ============================================================
   Address & Map Section
   ============================================================ */
.address-section {
  background: var(--color-bg-alt);
  padding: 2.5rem 0 0;
}

.address-heading {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 0.35rem;
}

.address-text {
  text-align: center;
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}

.map-wrapper {
  max-width: 700px;
  margin: 0 auto;
  overflow: hidden;
}

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section {
  padding: 2.5rem 0;
  text-align: center;
  background: var(--color-accent-pale);
}

.btn-call {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.9rem 2.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
  transition: background var(--transition), box-shadow var(--transition),
              transform var(--transition), color var(--transition);
}

.btn-call:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 22px rgba(46, 125, 50, 0.42);
  transform: translateY(-2px);
  color: var(--color-white);
}

/* ============================================================
   Content Pages (О нас, Запчасти, Контакты)
   ============================================================ */
.content-section {
  padding: 3rem 0;
}

.page-title {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  text-transform: uppercase;
  text-align: center;
  color: var(--color-primary);
  letter-spacing: 1px;
  margin-bottom: 2rem;
}

.content-block {
  max-width: 780px;
  margin: 0 auto;
}

.content-para {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text);
  text-indent: 1.5em;
  margin-bottom: 1.25rem;
}

.content-para:last-child {
  margin-bottom: 0;
}

.content-highlight {
  font-weight: 600;
  color: var(--color-primary);
}

/* ============================================================
   Contacts Page
   ============================================================ */
.contacts-cta {
  text-align: center;
  padding: 2rem 0;
}

.contacts-label {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

.contacts-tel {
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  font-weight: 700;
  color: var(--color-primary);
  display: inline-block;
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}

.contacts-tel:hover {
  color: var(--color-accent);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
  padding: 1.1rem 1rem;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 3px;
  text-transform: uppercase;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
  .header-top .d-flex {
    flex-direction: column;
    gap: 0.6rem;
    text-align: center;
  }

  .brand-title {
    font-size: 1.1rem;
  }

  .hero-section {
    padding: 2rem 0;
  }

  .features-section {
    padding: 2rem 0;
  }

  .feature-card {
    padding: 1.5rem 1rem;
  }

  .parts-section,
  .content-section {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  .brand-title {
    font-size: 0.95rem;
    letter-spacing: 0.5px;
  }

  .header-tel {
    font-size: 1rem;
  }

  .btn-call {
    padding: 0.8rem 1.8rem;
    font-size: 0.95rem;
  }
}