/* ==========================================================
   RESPONSIVE.CSS — все медиазапросы проекта
   Порядок: min-width (mobile-first) затем max-width (overrides)
   ========================================================== */

/* ----------------------------------------------------------
   768px+ — планшет
   ---------------------------------------------------------- */
@media (min-width: 768px) {
  :root { --container-pad: 1.5rem; }

  /* Хедер */
  .header-contacts { display: flex; }
  .burger-btn { display: none; }

  /* Навигация — горизонтальная */
  .main-nav { display: block; }
  .nav-list {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .nav-list > li > a .nav-arrow { margin-left: 0.25rem; }
  .nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
  }
  .nav-list > li:hover > .nav-dropdown { display: block; }
  .nav-list > li.is-open > .nav-dropdown { display: block; }

  /* Хиро */
  .hero-stats .container { grid-template-columns: repeat(3, 1fr); }

  /* Сетки */
  .products-grid   { grid-template-columns: repeat(2, 1fr); }
  .projects-grid   { grid-template-columns: repeat(2, 1fr); }
  .popular-kits    { grid-template-columns: repeat(2, 1fr); }
  .about-layout    { grid-template-columns: 1fr 1fr; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid    { grid-template-columns: repeat(2, 1fr); }
  .seo-block__body { grid-template-columns: 1fr 1fr; }

  /* Каталог */
  .catalog-layout  { grid-template-columns: 260px 1fr; }

  /* Товар */
  .product-layout  { grid-template-columns: 1fr 1fr; }

  /* Контакты */
  .contacts-layout { grid-template-columns: 1fr 1fr; }
  .contacts-top    { grid-template-columns: 1fr 1fr; align-items: start; }
  .contacts-map    { min-height: 380px; }
  .contacts-map iframe { min-height: 380px; }
  .contacts-bottom { grid-template-columns: 1fr 1fr; }

  /* Сотрудничество */
  .coop-intro      { grid-template-columns: 1fr 1fr; }
  .coop-directions { grid-template-columns: repeat(3, 1fr); }
  .coop-form-wrap  { grid-template-columns: 1fr 1fr; }

  /* Футер */
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ----------------------------------------------------------
   1024px+ — десктоп
   ---------------------------------------------------------- */
@media (min-width: 1024px) {
  :root { --container-pad: 2rem; }

  h1 { font-size: var(--fs-3xl); }
  h2 { font-size: var(--fs-2xl); }

  .categories-grid { grid-template-columns: repeat(4, 1fr); }
  .products-grid   { grid-template-columns: repeat(3, 1fr); }
  .projects-grid   { grid-template-columns: repeat(3, 1fr); }
  .popular-kits    { grid-template-columns: repeat(3, 1fr); }
  .advantages-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid     { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer-map      { height: 260px; }

  /* Контакты */
  .contacts-top   { grid-template-columns: 5fr 7fr; }
  .contacts-cards { grid-template-columns: repeat(2, 1fr); }
}

/* ----------------------------------------------------------
   1280px+ — широкий экран
   ---------------------------------------------------------- */
@media (min-width: 1280px) {
  .products-grid { grid-template-columns: repeat(4, 1fr); }
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid  { grid-template-columns: repeat(4, 1fr); }
  .carousel-wrapper { --carousel-cols: 3; }
}

/* ----------------------------------------------------------
   max-width: 1280px — уплотняем навигацию
   ---------------------------------------------------------- */
@media (max-width: 1280px) {
  .nav-list > li > a {
    padding: 0.85rem 0.5rem;
    font-size: 0.7rem;
  }
  .categories-grid { grid-template-rows: repeat(4, 135px); }
}

/* ----------------------------------------------------------
   max-width: 1024px — планшет горизонтальный
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .nav-list > li > a {
    padding: 0.8rem 0.4rem;
    font-size: 0.67rem;
  }
  .header-phone { font-size: var(--fs-base); }
  .header-contacts { gap: 0.6rem; }

  .hero { min-height: 420px; }
  .hero-wrap { height: auto; }

  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(6, 120px);
  }
  .cat-1  { grid-column: 1 / 3; grid-row: 1 / 3; }
  .cat-2  { grid-column: 3 / 5; grid-row: 1 / 2; }
  .cat-3  { grid-column: 3 / 5; grid-row: 2 / 3; }
  .cat-4  { grid-column: 1 / 2; grid-row: 3 / 4; }
  .cat-5  { grid-column: 2 / 3; grid-row: 3 / 4; }
  .cat-6  { grid-column: 3 / 5; grid-row: 3 / 5; }
  .cat-7  { grid-column: 1 / 3; grid-row: 4 / 6; }
  .cat-8  { grid-column: 1 / 2; grid-row: 5 / 6; }
  .cat-9  { grid-column: 2 / 3; grid-row: 5 / 6; }
  .cat-10 { grid-column: 3 / 4; grid-row: 5 / 6; }
  .cat-11 { grid-column: 4 / 5; grid-row: 5 / 6; }
  .cat-12 { grid-column: 3 / 5; grid-row: 6 / 7; }

  .catalog-layout   { grid-template-columns: 220px 1fr; }
  .coop-directions  { grid-template-columns: repeat(3, 1fr); }

  /* Карусель: 2 карточки */
  .carousel-wrapper { --carousel-cols: 2; }

  /* Проекты и отзывы: 2 колонки */
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid  { grid-template-columns: repeat(2, 1fr); }
}

/* ----------------------------------------------------------
   max-width: 767px — мобильные + drawer-меню
   ---------------------------------------------------------- */
@media (max-width: 767px) {
  /* Хедер */
  .header-top  { display: none; }
  .header-main { padding: 0.6rem 0; }
  .logo-sub    { display: none; }

  /* Drawer-меню */
  .main-nav {
    position: fixed;
    top: var(--header-h, 60px); right: -100%;
    width: 85%;
    max-width: 320px;
    height: calc(100vh - var(--header-h, 60px));
    background: var(--color-dark-bg);
    z-index: 950;
    overflow-y: auto;
    transition: right var(--transition-slow);
    padding-top: 0;
  }
  .main-nav.is-open { right: 0; }
  .nav-list { display: flex; flex-direction: column; }
  .nav-list > li > a { border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-dropdown { position: static; box-shadow: none; border-top: none; }
  .nav-dropdown a { padding-left: 2rem; }

  /* Паззл-сетка — 2 колонки */
  .categories-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    grid-template-rows: auto !important;
    gap: 4px;
  }
  .categories-grid [class*="cat-"] {
    grid-column: auto !important;
    grid-row: auto !important;
    min-height: 110px;
  }
  .categories-grid [class*="cat-"] .category-card__img {
    width: 52px !important;
    height: 52px !important;
    position: absolute;
    bottom: 0;
    right: 0;
  }
  .category-card__title { font-size: var(--fs-xs); }
  .category-card__links { display: none; }

  /* Хиро */
  .hero { min-height: 360px; }
  .hero-wrap { height: auto; }
  .hero .container { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
  .hero-content  { max-width: 100%; }
  .hero-title    { font-size: clamp(1.5rem, 6vw, 2.2rem); }
  .hero-subtitle { font-size: var(--fs-sm); margin-bottom: var(--space-md); }
  .hero-actions  { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .hero-actions .btn { width: 100%; max-width: 300px; }

  /* Статистика */
  .stat-card     { padding: var(--space-sm) 0.5rem; }
  .stat-card__num   { font-size: var(--fs-xl); }
  .stat-card__label { font-size: 0.65rem; }

  /* Секции */
  .section       { padding: var(--space-lg) 0; }
  .section-title { font-size: var(--fs-lg); margin-bottom: var(--space-md); }

  /* О нас */
  .about-layout  { grid-template-columns: 1fr; gap: var(--space-md); }
  .about-image   { max-height: 260px; overflow: hidden; }
  .about-badge   { bottom: 1rem; left: 1rem; padding: 0.5rem 0.9rem; }
  .about-badge__num { font-size: var(--fs-xl); }

  /* Преимущества */
  .advantages-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }
  .advantage-card  { padding: var(--space-sm); }

  /* Популярные комплекты */
  .popular-kits { grid-template-columns: 1fr; }
  .kit-card__header { flex-direction: column; align-items: flex-start; gap: 0.25rem; }

  /* Проекты и отзывы: 1 колонка */
  .projects-grid { grid-template-columns: 1fr; }
  .reviews-grid  { grid-template-columns: 1fr; }

  /* Карусель: 1 карточка */
  .carousel-wrapper { padding: 0 44px; --carousel-cols: 1; }
  .carousel-btn { width: 38px; height: 38px; }

  /* Каталог */
  .catalog-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }

  /* Страница товара */
  .product-layout { grid-template-columns: 1fr; }
  .product-info__title  { font-size: var(--fs-lg); }
  .product-info__price  { font-size: var(--fs-xl); }
  .product-info__actions { flex-direction: column; }
  .product-info__actions .btn { width: 100%; }
  .gallery-thumb { flex: 0 0 60px; height: 60px; }

  /* Таблица */
  .specs-table th,
  .specs-table td { padding: 0.5rem 0.6rem; font-size: var(--fs-xs); }

  /* SEO */
  .seo-block__body  { grid-template-columns: 1fr; }
  .seo-block__title { font-size: clamp(1.2rem, 4vw, 1.6rem); }
  .seo-block__facts { grid-template-columns: repeat(2, 1fr); }
  .seo-fact__num    { font-size: var(--fs-xl); }

  /* Контакты */
  .contacts-top    { grid-template-columns: 1fr; }
  .contacts-cards  { grid-template-columns: 1fr; }
  .contacts-bottom { grid-template-columns: 1fr; }
  .contacts-map    { min-height: 250px; }
  .contacts-map iframe { min-height: 250px; }

  /* Сотрудничество */
  .coop-intro      { grid-template-columns: 1fr; }
  .coop-directions { grid-template-columns: 1fr; }
  .coop-form-wrap  { grid-template-columns: 1fr; }
  .coop-form       { padding: var(--space-md); }

  /* Футер */
  .footer-grid   { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-col    { text-align: center; }
  .footer-col__title { display: block; }
  .footer-col p,
  .footer-col address { text-align: center; }
  .footer-nav    { text-align: center; }
  .social-links  { justify-content: center; }

  /* Разное */
  .breadcrumbs { font-size: 0.75rem; }
  .scroll-top  { bottom: 1.25rem; right: 1.25rem; width: 42px; height: 42px; }

  /* 404 */
  .error-404__num     { font-size: clamp(5rem, 20vw, 10rem); }
  .error-404__title   { font-size: var(--fs-lg); }
  .error-404__text    { font-size: var(--fs-sm); }
  .error-404__actions { flex-direction: column; align-items: center; }
  .error-404__actions .btn { width: 100%; max-width: 280px; }
  .ruler-decor { display: none; }
}

/* ----------------------------------------------------------
   max-width: 480px — смартфоны среднего размера
   ---------------------------------------------------------- */
@media (max-width: 480px) {
  :root { --container-pad: 0.875rem; }

  .logo-text { font-size: 0.9rem; }

  .hero { min-height: 300px; }
  .hero-title    { font-size: clamp(1.3rem, 7vw, 1.9rem); }
  .hero-subtitle { font-size: var(--fs-xs); }
  .hero-label    { font-size: 0.6rem; }
  .hero-actions .btn { font-size: var(--fs-xs); padding: 0.7rem 1.2rem; }

  .stat-card__num   { font-size: var(--fs-lg); }
  .stat-card__label { font-size: 0.6rem; }

  .section       { padding: var(--space-md) 0; }
  .section-title { font-size: var(--fs-base); }

  .about-image { max-height: 210px; }

  .categories-grid [class*="cat-"] { min-height: 95px; }
  .categories-grid [class*="cat-"] .category-card__img {
    width: 44px !important;
    height: 44px !important;
  }

  .advantages-grid { grid-template-columns: 1fr; }
  .projects-grid   { grid-template-columns: 1fr; }
  .reviews-grid    { grid-template-columns: 1fr; }
  .project-card__title { font-size: var(--fs-sm); }

  .carousel-wrapper { padding: 0 40px; }
  .carousel-item__title { font-size: var(--fs-xs); }

  .product-info__title { font-size: var(--fs-base); }
  .product-info__price { font-size: var(--fs-lg); }
  .gallery-thumb { flex: 0 0 52px; height: 52px; }

  .specs-table th,
  .specs-table td { padding: 0.4rem 0.5rem; font-size: 0.72rem; }

  .seo-fact__num { font-size: var(--fs-lg); }

  .contacts-cards { grid-template-columns: 1fr; }
  .contact-requisites > div { flex-direction: column; gap: 0.1rem; }
  .contact-requisites strong { text-align: left; }

  .coop-form { padding: var(--space-sm); }
  .coop-card { padding: var(--space-sm); }

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

  .modal__header { padding: 1rem 1.25rem; }
  .modal__body   { padding: 1.25rem; }
  .modal__title  { font-size: var(--fs-base); }

  .btn-lg { padding: 0.85rem 1.75rem; font-size: var(--fs-sm); }

  .error-404__num     { font-size: clamp(4.5rem, 18vw, 8rem); }
  .error-404__title   { font-size: var(--fs-base); }
  .error-404__content { padding: var(--space-md); }
  .terminal-line      { font-size: 0.75rem; }
}

/* ----------------------------------------------------------
   max-width: 375px — стандартный смартфон
   ---------------------------------------------------------- */
@media (max-width: 375px) {
  :root { --container-pad: 0.75rem; }

  .logo-text   { font-size: 0.82rem; }
  .header-main { padding: 0.5rem 0; }
  .burger-btn  { width: 36px; height: 36px; }

  .hero { min-height: 260px; }
  .hero-title    { font-size: clamp(1.2rem, 8vw, 1.6rem); }
  .hero-subtitle { display: none; }
  .hero-actions .btn { padding: 0.65rem 1rem; font-size: 0.7rem; }

  .stat-card     { padding: 0.75rem 0.25rem; }
  .stat-card__num   { font-size: var(--fs-base); }
  .stat-card__label { font-size: 0.55rem; }

  .section       { padding: 1.5rem 0; }
  .section-title { font-size: var(--fs-sm); }

  .categories-grid [class*="cat-"] { min-height: 85px; padding: 0.6rem; }
  .categories-grid [class*="cat-"] .category-card__img {
    width: 36px !important;
    height: 36px !important;
  }
  .category-card__title { font-size: 0.7rem; }

  .carousel-wrapper { padding: 0 36px; }
  .carousel-btn { width: 32px; height: 32px; }

  .product-info__price { font-size: var(--fs-base); }
  .gallery-thumb { flex: 0 0 46px; height: 46px; }

  .specs-table th,
  .specs-table td { padding: 0.35rem 0.4rem; font-size: 0.7rem; }

  .seo-fact__num   { font-size: var(--fs-lg); }
  .seo-fact__label { font-size: 0.6rem; }

  .contact-block       { padding: 0.75rem; }
  .contact-block__value { font-size: var(--fs-sm); }
  .contact-block__title { font-size: var(--fs-xs); }

  .footer-nav a { font-size: var(--fs-xs); }
  .social-link  { width: 32px; height: 32px; }

  .modal__body   { padding: 1rem; }
  .modal__header { padding: 0.85rem 1rem; }
  .form-control  { padding: 0.6rem 0.75rem; font-size: var(--fs-sm); }

  .btn    { padding: 0.65rem 1.25rem; font-size: var(--fs-xs); }
  .btn-lg { padding: 0.75rem 1.5rem;  font-size: var(--fs-xs); }
  .btn-sm { padding: 0.4rem 0.85rem; }

  .scroll-top     { width: 38px; height: 38px; bottom: 1rem; right: 1rem; }
  .scroll-top svg { width: 18px; height: 18px; }

  .error-404__num   { font-size: clamp(3.5rem, 16vw, 6rem); }
  .error-404__title { font-size: var(--fs-sm); }
  .error-404__label { font-size: 0.6rem; }
}

/* ----------------------------------------------------------
   max-width: 320px — минимальная ширина
   ---------------------------------------------------------- */
@media (max-width: 320px) {
  :root { --container-pad: 0.625rem; }

  .logo-text  { font-size: 0.75rem; }
  .burger-btn { width: 32px; height: 32px; }

  .hero { min-height: 230px; }
  .hero-title { font-size: 1.15rem; }
  .hero-label { display: none; }
  .hero-actions .btn { font-size: 0.65rem; padding: 0.6rem 0.9rem; }

  .stat-card     { padding: 0.6rem 0.2rem; }
  .stat-card__num   { font-size: var(--fs-sm); }
  .stat-card__label { font-size: 0.5rem; }

  .section       { padding: 1.25rem 0; }
  .section-title { font-size: var(--fs-xs); }
  .section-title::after { width: 36px; height: 3px; }

  .about-badge { display: none; }

  .categories-grid { gap: 2px; }
  .categories-grid [class*="cat-"] { min-height: 75px; padding: 0.5rem; }
  .categories-grid [class*="cat-"] .category-card__img {
    width: 30px !important;
    height: 30px !important;
  }
  .category-card__title { font-size: 0.65rem; }

  .advantage-card { padding: 0.75rem; }
  .advantage-card__icon { width: 2rem; height: 2rem; }
  .advantage-card__icon .icon { width: 1rem; height: 1rem; }
  .advantage-card__title { font-size: var(--fs-xs); }
  .advantage-card__text  { font-size: 0.7rem; }

  .kit-card__name  { font-size: var(--fs-xs); }
  .kit-card__price { font-size: var(--fs-sm); }

  .carousel-wrapper { padding: 0 32px; }
  .carousel-btn { width: 28px; height: 28px; }

  .products-grid { grid-template-columns: 1fr; }
  .product-card__title  { font-size: var(--fs-sm); }
  .product-info__title  { font-size: var(--fs-base); }
  .product-info__price  { font-size: var(--fs-md); }
  .gallery-thumb  { flex: 0 0 40px; height: 40px; }
  .gallery-thumbs { gap: 0.25rem; }

  .specs-table th,
  .specs-table td { padding: 0.3rem 0.35rem; font-size: 0.65rem; }

  .seo-fact     { padding: 0.75rem 0.5rem; }
  .seo-fact__num   { font-size: var(--fs-md); }
  .seo-fact__label { font-size: 0.55rem; }

  .contact-block       { padding: 0.6rem; }
  .contact-block__title { font-size: 0.65rem; }
  .contact-block__value { font-size: var(--fs-xs); }
  .contact-hours { font-size: 0.7rem; }
  .contact-requisites > div { font-size: 0.7rem; flex-direction: column; gap: 0.1rem; }
  .contact-requisites strong { text-align: left; }

  .coop-card       { padding: 0.75rem; }
  .coop-card__icon { width: 2rem; height: 2rem; }
  .coop-card__title { font-size: var(--fs-xs); }
  .coop-card__text  { font-size: 0.7rem; }
  .coop-form { padding: 0.75rem; }

  .footer-col__title { font-size: 0.7rem; }
  .footer-nav a { font-size: 0.7rem; }
  .social-link  { width: 28px; height: 28px; font-size: 0.65rem; }
  .footer-bottom { font-size: 0.65rem; }

  .modal__header { padding: 0.75rem; }
  .modal__body   { padding: 0.75rem; }
  .modal__title  { font-size: var(--fs-sm); }
  .form-control  { padding: 0.5rem 0.65rem; font-size: var(--fs-xs); }
  .form-label    { font-size: var(--fs-xs); }

  .btn    { padding: 0.55rem 1rem;   font-size: 0.65rem; }
  .btn-lg { padding: 0.65rem 1.25rem; font-size: 0.7rem; }
  .btn-sm { padding: 0.35rem 0.75rem; }

  .breadcrumbs { font-size: 0.65rem; }

  .scroll-top     { width: 34px; height: 34px; bottom: 0.75rem; right: 0.75rem; }
  .scroll-top svg { width: 16px; height: 16px; }

  .error-404__num     { font-size: clamp(3rem, 15vw, 5.5rem); -webkit-text-stroke: 2px var(--color-accent); }
  .error-404__title   { font-size: var(--fs-xs); }
  .error-404__text    { font-size: 0.7rem; }
  .error-404__label   { font-size: 0.55rem; }
  .error-404__content { padding: var(--space-sm); }
  .terminal-line      { font-size: 0.65rem; }
}