/* =========================================================
   PHASE 6 — RESPONSIVE
   Breakpoints fixed by Design System:
   Mobile: 0–767px
   Tablet: 768–1023px
   Desktop: 1024–1439px
   Large desktop: 1440px+
   ========================================================= */

/* ---------- Global responsive safeguards ---------- */
html,
body {
  max-width: 100%;
  overflow-x: clip;
}

body,
button,
input,
select,
textarea {
  overflow-wrap: anywhere;
}

.site-main {
  min-width: 0;
}

.site-container,
.page-hero__grid,
.product-detail__grid,
.form-shell,
.grid-2,
.grid-3,
.grid-4,
.product-grid,
.process-grid {
  min-width: 0;
}

.table-wrap {
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

/* ---------- Desktop below 1440 ---------- */
@media (max-width: 1439px) {
  .site-container,
  .phase-placeholder__inner {
    width: min(100% - 48px, var(--container-width));
  }

  .page-hero__grid {
    gap: 48px;
  }

  .product-detail__grid {
    gap: 44px;
  }
}

/* ---------- Compact desktop ---------- */
@media (max-width: 1199px) {
  .site-nav__inner {
    gap: var(--space-4);
  }

  .site-nav__link,
  .site-nav__mega-trigger {
    padding-inline: 0.7rem;
  }

  .site-footer__main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8) var(--space-12);
  }

  .page-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.8fr);
    gap: 40px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3,
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-detail__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
    gap: 36px;
  }

  .product-visual {
    min-height: 440px;
  }
}

/* ---------- Tablet ---------- */
@media (max-width: 1023px) {
  .site-container,
  .phase-placeholder__inner {
    width: min(100% - 32px, var(--container-width));
  }

  /* Header */
  .site-header__main-inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
    min-height: 72px;
    gap: var(--space-4);
  }

  .site-brand__logo {
    max-width: 185px;
    max-height: 48px;
  }

  .site-brand__text {
    max-width: 180px;
    font-size: var(--text-sm);
  }

  .site-search__results {
    max-height: min(55vh, 440px);
    overflow-y: auto;
  }

  .site-nav,
  .mega-menu {
    display: none !important;
  }

  .mobile-nav-toggle {
    display: inline-grid;
  }

  .mobile-nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: calc(var(--mobile-nav-z) - 1);
    background: var(--color-overlay);
  }

  .mobile-nav-backdrop.is-open {
    display: block;
  }

  .mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: var(--mobile-nav-z);
    width: min(88vw, 420px);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(100%);
    background: var(--color-white);
    box-shadow: -12px 0 30px rgba(15, 23, 42, 0.18);
    transition: transform 200ms ease;
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }

  .mobile-nav.is-open {
    display: block;
    transform: translateX(0);
  }

  .mobile-nav__header {
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    padding: 0 var(--space-4);
  }

  .mobile-nav__title {
    font-family: var(--font-heading);
    font-weight: 800;
  }

  .mobile-nav__body {
    padding: var(--space-4);
  }

  .mobile-nav__primary {
    display: grid;
    gap: 0;
  }

  .mobile-nav__primary > a,
  .mobile-nav__accordion-trigger {
    display: flex;
    width: 100%;
    min-height: 48px;
    align-items: center;
    justify-content: space-between;
    border: 0;
    border-bottom: 1px solid var(--color-border);
    background: transparent;
    padding: 0;
    font-family: var(--font-heading);
    font-weight: 700;
    text-align: left;
  }

  .mobile-nav__accordion-panel {
    padding: var(--space-3) 0 var(--space-4) var(--space-4);
  }

  .mobile-nav__group {
    margin-bottom: var(--space-4);
  }

  .mobile-nav__group:last-child {
    margin-bottom: 0;
  }

  .mobile-nav__group-title {
    margin-bottom: var(--space-2);
    color: var(--color-secondary);
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
  }

  .mobile-nav__group-links {
    display: grid;
    gap: 0;
  }

  .mobile-nav__group-links a {
    display: flex;
    min-height: 42px;
    align-items: center;
    color: #475569;
    font-size: var(--text-sm);
  }

  .mobile-nav__quote {
    width: 100%;
    margin-top: var(--space-6);
  }

  /* General page layout */
  .page-hero {
    padding: 64px 0;
  }

  .page-hero__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .page-section {
    padding: 64px 0;
  }

  .hero-showcase {
    width: 100%;
    min-height: 300px;
  }

  .section-heading {
    align-items: flex-start;
  }

  /* Product detail */
  .product-detail {
    padding-bottom: 64px;
  }

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

  .product-visual {
    position: relative;
    top: auto;
    width: 100%;
    min-height: 380px;
    aspect-ratio: 4 / 3;
  }

  .product-summary {
    min-width: 0;
  }

  /* Forms */
  .form-shell {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .form-side {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .quote-summary {
    grid-column: 1 / -1;
  }
}

/* ---------- Mobile ---------- */
@media (max-width: 767px) {
  :root {
    --text-4xl: 2.35rem;
    --text-3xl: 2rem;
    --text-2xl: 1.55rem;
  }

  .site-container,
  .phase-placeholder__inner {
    width: min(100% - 32px, var(--container-width));
  }

  /* Header: row 1 logo/menu, row 2 search */
  .site-header__main-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px 12px;
    min-height: auto;
    padding-block: 12px;
  }

  .site-brand {
    min-height: 44px;
  }

  .site-brand__logo {
    max-width: min(180px, 58vw);
    max-height: 46px;
  }

  .site-brand__text {
    max-width: 64vw;
    font-size: 0.8rem;
  }

  .site-search {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .site-search__form {
    min-height: 46px;
  }

  .site-search__submit {
    width: 48px;
  }

  .site-search__results {
    top: calc(100% + 6px);
    max-height: 52vh;
    border-radius: 8px;
  }

  .search-result {
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
  }

  .search-result__description {
    max-width: 100%;
  }

  .mobile-nav {
    width: min(92vw, 390px);
  }

  /* Breadcrumb */
  .breadcrumb {
    gap: 6px;
    padding: 16px 0;
    font-size: 0.8rem;
  }

  .breadcrumb span:not(:last-child)::after {
    margin-left: 6px;
  }

  /* Hero */
  .page-hero {
    padding: 46px 0;
  }

  .page-hero__grid {
    gap: 30px;
  }

  .page-eyebrow {
    margin-bottom: 12px;
    font-size: 0.78rem;
  }

  .page-hero h1,
  .product-summary h1 {
    font-size: clamp(2rem, 10vw, 2.8rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
  }

  .page-hero__lead,
  .product-summary__description {
    margin-top: 16px;
    font-size: 1rem;
    line-height: 1.65;
  }

  .page-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 24px;
  }

  .page-actions .btn,
  .cta-band .btn {
    width: 100%;
  }

  /* Home hero showcase becomes normal flow on small screens. */
  .hero-showcase {
    display: grid;
    min-height: 0;
    gap: 12px;
    padding: 16px;
    border-radius: 18px;
  }

  .hero-showcase::before {
    width: 190px;
    height: 190px;
    right: -70px;
    top: -80px;
  }

  .hero-showcase__card,
  .hero-showcase__card--one,
  .hero-showcase__card--two,
  .hero-showcase__card--three {
    position: relative;
    inset: auto;
    width: 100%;
    min-width: 0;
    padding: 18px;
    transform: none;
  }

  /* Sections and grids */
  .page-section {
    padding: 48px 0;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
  }

  .section-heading h2 {
    font-size: clamp(1.55rem, 8vw, 2rem);
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .product-grid,
  .process-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .category-card {
    min-height: 150px;
    padding: 20px;
  }

  .category-card__title {
    margin-top: 20px;
  }

  .info-card,
  .service-card,
  .price-card {
    padding: 20px;
  }

  .service-card {
    min-height: 200px;
  }

  .process-step {
    padding: 20px;
  }

  .portfolio-card__visual,
  .product-card__media {
    min-height: 190px;
  }

  .product-card__body {
    padding: 20px;
  }

  .product-card__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
    padding: 26px 22px;
    border-radius: 18px;
  }

  /* Tables retain columns and scroll horizontally. */
  .table-wrap {
    border-radius: 12px;
  }

  .data-table {
    min-width: 640px;
  }

  .data-table th,
  .data-table td {
    padding: 12px 14px;
    font-size: 0.875rem;
  }

  /* Long-form content */
  .content-shell h2 {
    margin: 34px 0 12px;
  }

  .content-shell h3 {
    margin: 24px 0 8px;
  }

  .faq-item summary {
    padding: 16px;
  }

  .faq-item p {
    padding: 0 16px 16px;
  }

  /* Product */
  .product-detail {
    padding-bottom: 48px;
  }

  .product-detail__grid {
    gap: 26px;
  }

  .product-visual {
    min-height: 260px;
    aspect-ratio: 4 / 3;
    border-radius: 18px;
    font-size: var(--text-lg);
  }

  .product-price {
    margin-top: 20px;
    padding: 18px;
  }

  .product-price__value {
    font-size: 1.75rem;
  }

  .option-preview {
    margin-top: 20px;
  }

  .spec-grid,
  .product-options-grid {
    grid-template-columns: 1fr;
  }

  .spec-item {
    padding: 18px;
  }

  .product-configurator {
    margin-top: 22px;
    padding: 18px;
  }

  .product-price-box__primary {
    padding: 18px;
  }

  .product-price-box__primary strong {
    font-size: 1.6rem;
  }

  .product-price-row {
    align-items: flex-start;
    gap: 14px;
    padding: 12px 18px;
  }

  .product-configurator__actions .btn {
    width: 100%;
  }

  /* Forms */
  .form-shell,
  .form-side,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-shell {
    gap: 22px;
  }

  .form-card {
    padding: 20px;
  }

  .form-field--full,
  .quote-summary {
    grid-column: auto;
  }

  .form-control {
    min-height: 48px;
    font-size: 16px; /* prevents automatic zoom on iOS */
  }

  textarea.form-control {
    min-height: 130px;
  }

  .form-choice {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .form-choice label {
    min-height: 46px;
  }

  .form-card .btn[type="submit"] {
    width: 100%;
  }

  /* Footer */
  .site-footer {
    margin-top: var(--space-16);
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding-block: 48px;
  }

  .site-footer__brand {
    max-width: none;
  }

  .site-footer__links a {
    display: flex;
    min-height: 38px;
    align-items: center;
  }

  .site-footer__bottom-inner {
    min-height: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-block: 18px;
  }
}

/* ---------- Small mobile ---------- */
@media (max-width: 479px) {
  .site-container,
  .phase-placeholder__inner {
    width: min(100% - 24px, var(--container-width));
  }

  .site-brand__logo {
    max-width: min(160px, 58vw);
  }

  .mobile-nav {
    width: 100%;
    max-width: none;
  }

  .mobile-nav__body,
  .mobile-nav__header {
    padding-inline: 14px;
  }

  .page-hero {
    padding: 40px 0;
  }

  .page-section {
    padding: 42px 0;
  }

  .page-hero h1,
  .product-summary h1 {
    font-size: clamp(1.9rem, 10.5vw, 2.45rem);
  }

  .btn {
    min-height: 46px;
  }

  .category-card,
  .info-card,
  .service-card,
  .price-card,
  .product-card__body,
  .process-step {
    padding: 18px;
  }

  .hero-showcase {
    padding: 12px;
  }

  .hero-showcase__card {
    padding: 16px;
  }

  .cta-band {
    padding: 24px 18px;
  }

  .product-visual {
    min-height: 230px;
  }

  .product-configurator,
  .form-card {
    padding: 16px;
  }

  .product-price-row {
    padding-inline: 16px;
  }

  .search-result__type {
    display: none;
  }
}

/* ---------- Pointer-specific interaction ---------- */
@media (hover: none) and (pointer: coarse) {
  .category-card:hover,
  .product-card:hover {
    transform: none;
    box-shadow: none;
  }

  .btn,
  .icon-button,
  .site-search__submit,
  .mobile-nav__primary > a,
  .mobile-nav__accordion-trigger,
  .mobile-nav__group-links a {
    min-height: 44px;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}