:root {
  --primary: #1a365d;
  --primary-light: #2a4a7f;
  --primary-dark: #0f1f3d;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --accent-light: #fbbf24;
  --dark: #0f172a;
  --text: #334155;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f1f5f9;
  --border: #e2e8f0;
  --success: #10b981;
  --error: #ef4444;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --font: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font);
  color: var(--dark);
  line-height: 1.2;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section__title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--dark);
}

.section__subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn--primary {
  background: var(--accent);
  color: var(--dark);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn--outline {
  background: transparent;
  color: var(--bg);
  border-color: var(--bg);
}

.btn--outline:hover {
  background: var(--bg);
  color: var(--dark);
}

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

.btn--lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  font-family: var(--font);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text);
  transition: all var(--transition);
}

.nav__link:hover {
  background: var(--bg-alt);
  color: var(--primary);
}

.header__phone {
  font-family: var(--font);
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
  white-space: nowrap;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 70px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url('../img/5fb06fee-9c52-48a6-901e-88d0ea46f80b.jpg') center/cover no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,31,61,0.92) 0%, rgba(26,54,93,0.85) 50%, rgba(15,31,61,0.92) 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero__tagline {
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 16px;
}

.hero__title {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--bg);
  margin-bottom: 20px;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero__social {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.hero__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: var(--bg);
  transition: all var(--transition);
}

.hero__social-link:hover {
  background: var(--accent);
  color: var(--dark);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.service-card__icon {
  color: var(--accent);
  margin-bottom: 20px;
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-card__text {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.about {
  background: var(--bg-alt);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about__content .section__title {
  text-align: left;
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}

.about__feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.about__feature-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--dark);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 2px;
}

.about__feature h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about__feature p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.about__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  background: var(--bg);
  border: none;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 500;
  color: var(--dark);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}

.faq__question:hover {
  background: var(--bg-alt);
}

.faq__arrow {
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--text-light);
}

.faq__item.active .faq__arrow {
  transform: rotate(180deg);
}

.faq__item.active .faq__question {
  background: var(--bg-alt);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq__item.active .faq__answer {
  max-height: 300px;
}

.faq__answer p {
  padding: 0 24px 18px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq__answer a {
  color: var(--primary);
  font-weight: 500;
}

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

.form-section__inner {
  max-width: 560px;
  margin: 0 auto;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form__label {
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--dark);
}

.form__input {
  padding: 14px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
  background: var(--bg);
}

.form__input:focus {
  border-color: var(--primary-light);
}

.form__input.error {
  border-color: var(--error);
}

.form__input.success {
  border-color: var(--success);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  font-size: 0.85rem;
  color: var(--error);
  display: none;
}

.form__group.error .form__error {
  display: block;
}

.form__note {
  font-size: 0.8rem;
  color: var(--text-light);
  text-align: center;
}

.form__status {
  text-align: center;
  font-family: var(--font);
  font-weight: 500;
  padding: 12px;
  border-radius: var(--radius-sm);
  display: none;
}

.form__status--success {
  display: block;
  background: #d1fae5;
  color: #065f46;
}

.form__status--error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
}

.form__status--loading {
  display: block;
  background: var(--bg-alt);
  color: var(--text-light);
}

.social__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.social__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 20px;
  border-radius: var(--radius);
  color: var(--bg);
  transition: all var(--transition);
  text-align: center;
}

.social__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.social__card--tg { background: #0088cc; }
.social__card--tg:hover { background: #0077b5; }
.social__card--wa { background: #25d366; }
.social__card--wa:hover { background: #20bd5a; }
.social__card--vk { background: #4a76a8; }
.social__card--vk:hover { background: #3d6391; }
.social__card--max { background: #1a1a2e; }
.social__card--max:hover { background: #0f0f1f; }

.social__card-title {
  font-family: var(--font);
  font-weight: 700;
  font-size: 1.1rem;
}

.social__card-desc {
  font-size: 0.85rem;
  opacity: 0.8;
}

.contact {
  background: var(--bg-alt);
}

.contact__inner {
  max-width: 720px;
  margin: 0 auto;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact__value {
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--dark);
}

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

.footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 48px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}

.footer .logo {
  color: var(--bg);
  display: inline-block;
  margin-bottom: 12px;
}

.footer__text {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__nav a {
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: var(--accent);
}

.footer__social {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.75rem;
  transition: all var(--transition);
}

.footer__social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--dark);
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  font-size: 0.85rem;
  text-align: center;
}

@media (max-width: 768px) {
  .header__phone {
    display: none;
  }

  .burger {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    gap: 4px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .section {
    padding: 56px 0;
  }

  .section__title {
    font-size: 1.6rem;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about__image {
    order: -1;
  }

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

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .footer__text {
    max-width: 100%;
  }

  .footer__nav {
    align-items: center;
  }

  .footer__social {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.7rem;
  }

  .hero__actions {
    flex-direction: column;
  }

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

  .social__grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .social__card {
    padding: 24px 16px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .hero__title {
    font-size: 2.6rem;
  }
}