/* ===== CSS Variables ===== */
:root {
  --bg-primary: #0d0d0d;
  --bg-secondary: #161616;
  --bg-card: #1f1f1f;
  --bg-hover: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #7a7a7a;
  --accent: #e8e0d5;
  --accent-hover: #f5f0e8;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1140px;
  --header-h: 72px;
  --font: 'Manrope', system-ui, -apple-system, sans-serif;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo__icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo__text {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn--primary:hover,
.btn--primary.revealed {
  background: var(--bg-hover);
}

.btn--secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn--secondary:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ===== Burger ===== */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 1px;
}

.burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  padding: calc(var(--header-h) + 80px) 0 80px;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}

.hero__title {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.hero__subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero__desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.hero__address {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero__address svg {
  flex-shrink: 0;
  opacity: 0.7;
}

.logo-card {
  width: 160px;
  height: 160px;
  background: var(--accent);
  color: var(--bg-primary);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
  text-transform: uppercase;
}

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

.section__title {
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
}

/* ===== Catalog ===== */
.services {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}

.service-card:hover {
  background: var(--bg-card);
  border-color: rgba(232, 224, 213, 0.2);
}

.service-card__num {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.service-card__title {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
}

.service-card__text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.service-card__list li {
  position: relative;
  padding-left: 18px;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 4px;
}

.service-card__tags li {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 999px;
}

/* ===== Free Blocks ===== */
.section--free {
  padding: 40px 0;
}

.free-block {
  min-height: 320px;
  background: var(--bg-secondary);
  border: 1px dashed rgba(232, 224, 213, 0.15);
  border-radius: var(--radius);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.free-block::before {
  content: attr(data-label);
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0.6;
}

.free-block::after {
  content: 'Свободный блок — будет заполнен позже';
  font-size: 14px;
  color: var(--text-muted);
  opacity: 0.5;
}

/* ===== About ===== */
.about__content {
  max-width: 800px;
}

.about__lead {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
}

.about__subtitle {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

.about__text {
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.advantages {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.advantages__item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.advantages__num {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 28px;
}

.advantages__item strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.advantages__item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about__footer-text {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 15px;
}

/* ===== Contacts ===== */
.contacts {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}

.contacts__info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contacts__address {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contacts__address svg {
  flex-shrink: 0;
  margin-top: 2px;
  opacity: 0.7;
}

.contacts__map {
  height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

.contacts__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: grayscale(30%) brightness(0.85);
}

/* ===== Footer ===== */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo--footer .logo__icon {
  width: 32px;
  height: 32px;
}

.logo--footer .logo__text {
  font-size: 12px;
}

.footer__requisites {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  text-align: center;
}

.footer__copy {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__logo-block {
    display: none;
  }

  .contacts {
    grid-template-columns: 1fr;
  }

  .contacts__map {
    height: 280px;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .burger {
    display: flex;
  }

  .hero {
    padding: calc(var(--header-h) + 48px) 0 60px;
    min-height: auto;
  }

  .section {
    padding: 60px 0;
  }

  .services {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .service-card {
    padding: 20px;
  }

  .service-card__title {
    font-size: 18px;
  }

  .free-block {
    min-height: 240px;
  }

  .advantages__item {
    flex-direction: column;
    gap: 12px;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__requisites {
    order: 1;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .section__title {
    margin-bottom: 28px;
  }
}