/* CSS Variables for Theming */
:root {
  /* Colors - Light Theme */
  --color-primary: #C62828;
  --color-primary-dark: #A02020;
  --color-secondary: #1a1a1a;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-border: #e0e0e0;
  --color-success: #4caf50;
  --color-error: #f44336;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-family-heading: Georgia, serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;
  
  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --transition-base: 200ms ease;
  --transition-slow: 400ms ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e0e0e0;
    --color-text-light: #b0b0b0;
    --color-bg: #1a1a1a;
    --color-bg-alt: #2a2a2a;
    --color-border: #404040;
    --color-secondary: #ffffff;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-base: 0ms;
    --transition-slow: 0ms;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header__content {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.header__logo img {
  height: 50px;
  width: auto;
  transition: filter var(--transition-base);
}

/* Logo visibility on dark theme */
@media (prefers-color-scheme: dark) {
  .header__logo img {
    filter: brightness(0) invert(1);
  }
}

.footer__logo img {
  transition: filter var(--transition-base);
}

.header__nav {
  position: relative;
}

.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 101;
}

.header__burger span {
  width: 25px;
  height: 3px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__burger[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.header__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__burger[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.header__menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.header__link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: color var(--transition-base), background-color var(--transition-base);
}

.header__link:hover,
.header__link:focus {
  color: var(--color-primary);
  background-color: var(--color-bg-alt);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (max-width: 768px) {
  .header__burger {
    display: flex;
  }
  
  .header__menu {
    position: fixed;
    top: 70px;
    right: -100%;
    flex-direction: column;
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 300px;
    transition: right var(--transition-base);
    border: 1px solid var(--color-border);
  }
  
  .header__menu.active {
    right: 0;
  }
}

/* Hero Section */
.hero {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  text-align: center;
  animation: fadeInUp 0.6s ease;
}

.hero__content {
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: var(--font-size-2xl);
  font-weight: bold;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--font-size-3xl);
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn:hover,
.btn:focus {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover,
.btn--secondary:focus {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn--small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn--full {
  width: 100%;
}

/* Section Styles */
section {
  padding: var(--spacing-xl) 0;
  scroll-margin-top: 80px;
}

.section__title {
  font-size: var(--font-size-2xl);
  font-weight: bold;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

/* Services Grid */
.services {
  background-color: var(--color-bg-alt);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  animation: fadeInUp 0.6s ease;
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background-color: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  animation: fadeInUp 0.6s ease both;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

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

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.service-card__description {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.service-card__price {
  font-size: var(--font-size-xl);
  font-weight: bold;
  color: var(--color-primary);
}

/* About Section */
.about__text {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-light);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.about__benefits {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .about__benefits {
    grid-template-columns: repeat(2, 1fr);
  }
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  animation: fadeInUp 0.6s ease both;
}

.benefit-item:nth-child(1) { animation-delay: 0.1s; }
.benefit-item:nth-child(2) { animation-delay: 0.2s; }
.benefit-item:nth-child(3) { animation-delay: 0.3s; }
.benefit-item:nth-child(4) { animation-delay: 0.4s; }

.benefit-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  font-weight: bold;
  flex-shrink: 0;
}

.benefit-item__text {
  color: var(--color-text);
}

/* Contacts Section */
.contacts {
  background-color: var(--color-bg-alt);
}

.contacts__content {
  max-width: 600px;
  margin: 0 auto;
}


/* Contact Phone Groups */
.contacts__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .contacts__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

.contact-phone-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeInUp 0.6s ease both;
}

.contact-phone-group:nth-child(1) { animation-delay: 0.1s; }
.contact-phone-group:nth-child(2) { animation-delay: 0.2s; }

.contact-phone {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  margin-bottom: var(--spacing-md);
  text-align: center;
  transition: color var(--transition-base);
}

.contact-phone:hover,
.contact-phone:focus {
  color: var(--color-primary);
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--border-radius);
}

.contact-messengers {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
}

.messenger-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: var(--color-text);
  background-color: var(--color-bg-alt);
  border-radius: 50%;
  transition: all var(--transition-base);
  text-decoration: none;
}

.messenger-link:hover,
.messenger-link:focus {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.messenger-icon {
  width: 24px;
  height: 24px;
}

.messenger-icon--max {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.map-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
}

.map-link:hover,
.map-link:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--border-radius);
}

.messenger-link--disabled {
  cursor: default;
  opacity: 0.6;
}

.messenger-link--disabled:hover {
  background-color: var(--color-bg-alt);
  transform: none;
  opacity: 0.6;
}

.messenger-link--max {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}


/* Map Section */
.map-section {
  padding: var(--spacing-xl) 0;
}

.map-address {
  text-align: center;
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease;
}

.address-text {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  font-style: normal;
  font-weight: 500;
}

.map-container {
  width: 100%;
  height: 450px;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.6s ease 0.2s both;
}


@media (max-width: 768px) {
  .map-container {
    height: 350px;
  }
}

/* Footer */
.footer {
  background-color: var(--color-secondary);
  color: #ffffff;
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer__content {
    grid-template-columns: auto 1fr;
    align-items: start;
  }
}

.footer__logo img {
  filter: brightness(0) invert(1);
}

.footer__contacts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .footer__contacts {
    flex-direction: row;
    gap: var(--spacing-xl);
  }
}

.footer__contact-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__label {
  font-weight: bold;
  opacity: 0.8;
}

.footer__contact-item a,
.footer__contact-item address {
  color: #ffffff;
  text-decoration: none;
  font-style: normal;
}

.footer__contact-item a:hover,
.footer__contact-item a:focus {
  text-decoration: underline;
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.footer__copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  opacity: 0.7;
  font-size: var(--font-size-sm);
  font-style: italic;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background-color: var(--color-success);
  color: #ffffff;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  transform: translateY(200%);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
  z-index: 1000;
  max-width: 300px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast__message {
  display: block;
  font-weight: 500;
}

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

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}