/* ═══════════════════════════════════════
   RESPONSIVE — Desktop-first breakpoints
   ═══════════════════════════════════════ */

@layer responsive {
  /* ── Medium screens (≤ 1150px) ── */
  @media (max-width: 1150px) {
    .header__inner {
      gap: var(--sp-md);
    }
    .header__phone {
      font-size: 0.85rem;
    }
    .header__actions {
      gap: 0.75rem;
    }
  }

  /* ── Compact header (≤ 1050px) ── */
  @media (max-width: 1050px) {
    .header__phone {
      display: none;
    }
  }

  /* ── Tablet (≤ 1024px) ── */
  @media (max-width: 1024px) {
    .header__nav {
      display: none;
    }
    .header__phone {
      display: none;
    }
    .header__logo-full {
      display: none;
    }
    .header__burger {
      display: flex;
    }

    /* Mobile nav overlay */
    .header__nav.is-open {
      display: flex;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(10, 10, 10, 0.98);
      backdrop-filter: blur(20px);
      z-index: var(--z-nav-overlay);
      align-items: center;
      justify-content: center;
      flex-direction: column;
      animation: navSlideIn 0.4s var(--ease-out);
      transform: none;
    }
    .header__nav.is-open .header__nav-list {
      flex-direction: column;
      align-items: center;
      gap: var(--sp-xl);
    }
    .header__nav.is-open .header__nav-link {
      font-size: 1.25rem;
      color: var(--c-white);
      animation: navLinkFadeIn 0.5s var(--ease-out) forwards;
      opacity: 0;
    }
    .header__nav.is-open .header__nav-link:nth-child(1) {
      animation-delay: 0.1s;
    }
    .header__nav.is-open .header__nav-link:nth-child(2) {
      animation-delay: 0.2s;
    }
    .header__nav.is-open .header__nav-link:nth-child(3) {
      animation-delay: 0.3s;
    }
    .header__nav.is-open .header__nav-link:nth-child(4) {
      animation-delay: 0.4s;
    }
    .header__nav.is-open .header__nav-link:nth-child(5) {
      animation-delay: 0.5s;
    }
    .header__nav.is-open .header__nav-link:nth-child(6) {
      animation-delay: 0.6s;
    }
    .header__nav.is-open .header__nav-close {
      display: flex;
      animation: closeButtonFadeIn 0.4s var(--ease-out);
    }

    /* About */
    .about__grid {
      grid-template-columns: 1fr;
      gap: var(--sp-xl);
    }
    .about__image {
      aspect-ratio: 4/3;
      max-height: 400px;
      width: 100%;
    }
    .about__image-frame {
      display: none;
    }

    /* Mastery */
    .mastery__header {
      flex-direction: column;
      align-items: stretch;
      gap: var(--sp-md);
    }
    .mastery__header-divider {
      width: 100%;
      height: 1px;
      align-self: auto;
      background: linear-gradient(to right, transparent, var(--c-gold), transparent);
    }

    /* Care */
    .care__card:last-child {
      grid-column: 1 / -1;
    }

    /* Puzzle */
    .puzzle__grid {
      grid-template-columns: repeat(2, 1fr);
      grid-template-areas:
        "experience experience"
        "promo1     materials"
        "promo2     approach"
        "quality    quality"
        "promo3     promo3";
    }
    .puzzle__piece--approach {
      text-align: left;
      align-items: flex-start;
    }
    .puzzle__piece--approach .puzzle__icon {
      margin-inline: 0;
    }
    .puzzle__promo3-inner {
      gap: var(--sp-md);
    }

    /* Contacts */
    .contacts__grid {
      grid-template-columns: 1fr;
      gap: var(--sp-xl);
      width: 100%;
    }
    .contacts__map {
      aspect-ratio: 16/9;
      min-height: 300px;
      width: 100%;
      max-width: 100%;
      box-sizing: border-box;
      overflow: hidden;
    }

    /* Fix */
    .fix__grid {
      grid-template-columns: 1fr;
      gap: var(--sp-xl);
    }

    /* Portfolio */
    .portfolio__spotlight {
      grid-template-columns: 1fr;
    }
    .portfolio__editorial {
      grid-template-columns: 1fr;
      gap: var(--sp-sm);
    }
    .portfolio__grid {
      grid-template-columns: repeat(6, minmax(0, 1fr));
    }
    .portfolio__item {
      grid-column: span 2;
    }
    .portfolio__item:nth-child(7n + 1),
    .portfolio__item:nth-child(7n + 5) {
      grid-column: span 2;
    }
    .portfolio__item:nth-child(7n + 1) .portfolio__item-img,
    .portfolio__item:nth-child(7n + 5) .portfolio__item-img {
      aspect-ratio: 4/5;
    }
    .portfolio__item-img img {
      object-position: 50% 22%;
    }
    .portfolio__item:not(.portfolio__item--cta) {
      border: 0;
      -webkit-mask-image: none;
      mask-image: none;
    }
    .portfolio__item:not(.portfolio__item--cta) .portfolio__item-overlay {
      left: -1px;
      right: -1px;
      bottom: 0;
      -webkit-clip-path: none;
      clip-path: none;
      transform: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      background-clip: border-box;
      background: linear-gradient(to top, rgba(10, 10, 10, 0.95) 0%, rgba(10, 10, 10, 0.34) 72%, rgba(10, 10, 10, 0) 100%);
    }
    .portfolio__item--cta {
      grid-column: span 6;
      min-height: 160px;
    }
    .portfolio__load-more {
      padding: 0.75rem 2rem;
      font-size: 0.95rem;
    }
  }


  /* ── Mobile (≤ 640px) ── */
  @media (max-width: 640px) {
    /* Buttons mobile fixes */
    .btn {
      padding: 0.9rem 1.8rem;
      font-size: clamp(0.9rem, 2.5vw, 1rem);
      white-space: normal;
      text-align: center;
      max-width: 100%;
      min-width: auto;
    }
    .btn--lg {
      padding: 1rem 2rem;
    }


    /* Marquee mobile fix */
    .marquee {
      width: 100%;
      max-width: 100%;
      overflow-x: hidden;
    }
    .marquee__item {
      font-size: clamp(1.25rem, 5vw, 1.5rem);
    }

    /* Hero */
    .hero__bg-img {
      background-position: center 20%;
    }
    .hero__content {
      padding-top: 6rem;
      padding-inline: var(--sp-md);
    }
    .hero__title {
      font-size: clamp(2.5rem, 12vw, 4rem);
    }
    .hero__buttons {
      flex-direction: column;
      align-items: center;
      gap: var(--sp-sm);
      width: 100%;
      padding: 0 var(--sp-sm);
    }
    .hero__buttons .btn {
      width: 100%;
      max-width: 280px;
    }

    /* About stats */
    .about__stats {
      flex-direction: column;
      gap: var(--sp-md);
    }

    /* Mastery header */
    .mastery__header {
      padding: var(--sp-md);
    }
    .mastery__header-buttons {
      flex-direction: column;
      gap: var(--sp-xs);
    }
    .mastery__header-buttons .btn {
      width: 100%;
      min-width: auto;
    }

    /* Mastery */
    .mastery__panels-container {
      position: relative;
      width: 100%;
      min-height: 580px;
      overflow-x: auto;
      overflow-y: hidden;
      box-sizing: border-box;
      -webkit-overflow-scrolling: touch;
      scroll-snap-type: x mandatory;
      touch-action: pan-x pan-y;
      scrollbar-width: none;
      padding-inline: var(--sp-xs);
    }
    .mastery__panels-container::-webkit-scrollbar {
      display: none;
    }
    .mastery__panel {
      grid-template-columns: 1fr;
      gap: 0;
      height: auto;
      width: 100%;
      min-height: 0;
    }
    .mastery__panel--active {
      min-height: 580px;
    }
    .mastery__panel-image {
      position: absolute;
      inset: 0;
      z-index: 0;
      height: 100%;
      width: 100%;
      border-radius: var(--radius-lg);
      top: 0;
      left: 0;
    }
    .mastery__panel-image::after {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: inherit;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(6, 6, 6, 0.34) 0%, rgba(8, 8, 8, 0.22) 24%, rgba(10, 10, 10, 0.62) 62%, rgba(10, 10, 10, 0.82) 100%);
      pointer-events: none;
    }
    .mastery__panel-image img {
      transition: none;
    }
    .mastery__panel-info {
      padding: var(--sp-lg);
      position: relative;
      z-index: 1;
      background: linear-gradient(180deg, rgba(10, 10, 10, 0.06) 0%, rgba(10, 10, 10, 0.46) 36%, rgba(10, 10, 10, 0.84) 100%);
      width: 100%;
      margin: 0;
      border-radius: 0 0 var(--radius-lg) var(--radius-lg);
      border: none;
      align-self: flex-end;
    }
    .mastery__panel-title,
    .mastery__panel-desc,
    .mastery__panel-meta-label,
    .mastery__panel-meta-value {
      text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    }
    .mastery__panel-desc {
      color: rgba(255, 255, 255, 0.92);
    }
    .mastery__panel-meta-label {
      color: rgba(255, 255, 255, 0.78);
    }
    .mastery__panel-meta {
      grid-template-columns: 1fr 1fr;
      gap: var(--sp-sm);
    }
    .mastery__tabs-nav {
      gap: var(--sp-xs);
      max-width: 100%;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
      flex-wrap: nowrap;
      justify-content: flex-start;
      padding-bottom: var(--sp-xs);
      box-sizing: border-box;
    }
    .mastery__tabs-nav::-webkit-scrollbar {
      display: none;
    }
    .mastery__tab-btn {
      padding: var(--sp-xs) var(--sp-sm);
      font-size: 0.75rem;
      flex-shrink: 0;
    }
    .mastery__cta-buttons .btn,
    .mastery__panel-btn {
      width: 100%;
      max-width: none;
      min-width: auto;
    }

    /* Care */
    .care__grid {
      grid-template-columns: 1fr;
    }
    .care__card:last-child {
      grid-column: auto;
    }
    .care__card-header {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--sp-xs);
    }
    .care__card-badge {
      font-size: 0.7rem;
      padding: 0.25rem 0.6rem;
    }

    /* Puzzle — mobile */
    .puzzle__grid {
      grid-template-columns: 1fr;
      grid-template-areas:
        "experience"
        "promo1"
        "materials"
        "promo2"
        "approach"
        "quality"
        "promo3";
    }
    .puzzle__piece {
      border-radius: var(--radius-md);
    }
    .puzzle__piece--approach {
      text-align: left;
      align-items: flex-start;
    }
    .puzzle__piece--approach .puzzle__icon {
      margin-inline: 0;
    }
    .puzzle__piece--accent {
      text-align: right;
      align-items: flex-end;
    }
    .puzzle__promo3-inner {
      flex-direction: column;
      gap: var(--sp-sm);
      align-items: flex-end;
    }
    .puzzle__piece--promo3 .puzzle__promo-text {
      text-align: right;
    }
    .puzzle__piece--promo1 .puzzle__percent {
      font-size: clamp(2.5rem, 5vw, 3.5rem);
    }



    /* Header on small screens */
    .header__inner {
      gap: var(--sp-xs);
    }
    .header__logo-text {
      font-size: 1.5rem;
    }
    .header__actions {
      gap: var(--sp-xs);
    }
    .header__actions .btn--sm {
      padding: 0.6rem 1rem;
      font-size: 0.75rem;
      white-space: normal;
      min-width: auto;
    }
    .header__burger {
      padding: 0.5rem;
      margin-inline-start: 0.25rem;
    }

    /* Footer */
    .footer__inner {
      flex-direction: column;
      text-align: center;
      gap: var(--sp-lg);
    }
    .footer__links {
      flex-direction: column;
      gap: var(--sp-sm);
    }

    /* Portfolio mobile */
    .portfolio__grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 0.5rem;
    }
    .portfolio__item {
      grid-column: span 1;
    }
    .portfolio__item:nth-child(7n + 1),
    .portfolio__item:nth-child(7n + 5) {
      grid-column: span 1;
    }
    .portfolio__item:nth-child(7n + 1) .portfolio__item-img,
    .portfolio__item:nth-child(7n + 5) .portfolio__item-img {
      aspect-ratio: 4/5;
    }
    .portfolio__item-img img {
      object-position: 50% 20%;
    }
    .portfolio__item:not(.portfolio__item--cta) {
      border: 0;
      -webkit-mask-image: none;
      mask-image: none;
    }
    .portfolio__item:not(.portfolio__item--cta) .portfolio__item-overlay {
      left: -1px;
      right: -1px;
      bottom: 0;
      -webkit-clip-path: none;
      clip-path: none;
      transform: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      background-clip: border-box;
      background: linear-gradient(to top, rgba(10, 10, 10, 0.96) 0%, rgba(10, 10, 10, 0.38) 74%, rgba(10, 10, 10, 0) 100%);
    }
    .portfolio__editorial-title {
      font-size: 1.15rem;
    }
    .portfolio__editorial-text {
      font-size: 0.84rem;
    }
    .portfolio__item-category {
      font-size: 0.9rem;
    }
    .portfolio__item-author {
      font-size: 0.75rem;
    }
    .portfolio__item--cta {
      grid-column: span 1;
      min-height: 0;
      aspect-ratio: 4/5;
    }
    .portfolio__cta-title {
      font-size: 0.82rem;
      letter-spacing: 0.03em;
    }
    .portfolio__cta-desc {
      font-size: 0.72rem;
      max-width: 160px;
    }
    .portfolio__cta-icon svg {
      width: 28px;
      height: 28px;
    }
    .portfolio__cta-inner {
      padding: 1.2rem 0.8rem;
      gap: 0.4rem;
    }
    .portfolio__cta-arrow {
      width: 30px;
      height: 30px;
      margin-top: 0.2rem;
    }
    .portfolio__cta-arrow svg {
      width: 16px;
      height: 16px;
    }
    .portfolio__load-more {
      padding: 0.7rem 1.6rem;
      font-size: 0.88rem;
      letter-spacing: 0.06em;
      width: 100%;
    }

    /* CTA */
    .cta__buttons,
    .fix__buttons {
      flex-direction: column;
      align-items: center;
      gap: var(--sp-sm);
      width: 100%;
      padding: 0 var(--sp-sm);
    }
    .cta__buttons .btn,
    .fix__buttons .btn {
      width: 100%;
      max-width: 280px;
      text-align: center;
    }

    /* Contacts Map */
    .contacts__map {
      min-height: 250px;
    }
  }


  /* ── Small Mobile (≤ 375px) ── */
  @media (max-width: 375px) {
    /* Content padding */
    .container {
      padding-inline: var(--sp-sm);
    }

    /* Buttons */
    .btn {
      padding: 0.8rem 1.5rem;
      font-size: 0.9rem;
    }

    /* Hero - only if really necessary */
    .hero__content {
      padding-inline: var(--sp-sm);
    }
    .hero__title {
      overflow-wrap: break-word;
    }
    .hero__desc {
      overflow-wrap: break-word;
    }
    .hero__badge {
      padding: 0.4rem 1rem;
    }
    .hero__badge-text {
      font-size: 0.7rem;
    }

    /* Care badge */
    .care__card-badge {
      font-size: 0.65rem;
      padding: 0.2rem 0.5rem;
      letter-spacing: 0.04em;
    }
  }


  /* ── Large Desktop (≥ 1600px) ── */
  @media (min-width: 1600px) {
    :root {
      --container-max: 1400px;
    }
  }

  /* ── Reduced motion ── */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms;
      animation-iteration-count: 1;
      transition-duration: 0.01ms;
      scroll-behavior: auto;
    }
    .anim-fade {
      opacity: 1;
      transform: none;
    }
    .marquee__track {
      animation: none;
    }
  }

}