/*==============================
  SOLARICHI - Responsive Styles
  Mobile First — MD3
==============================*/

/* ── Tablet (≤ 1024px) ── */

@media (max-width: 1024px) {
  :root {
    --header-height: 88px;
  }

  .md3-search__panel {
    padding: 64px var(--space-3) var(--space-3);
  }

  .md3-topbar__text {
    display: none;
  }

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

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

  .footer-grid,
  .md3-footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .about-grid {
    gap: 40px;
  }

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

  ul.products {
    grid-template-columns: repeat(2, 1fr);
  }

  .solarichi-shop-layout {
    flex-direction: column;
  }

  .solarichi-shop-layout > .solarichi-filter-sidebar {
    display: none;
  }

  .mobile-filter-btn {
    display: inline-flex;
  }

  .solarichi-product-grid,
  .md3-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .md3-shop-layout {
    flex-direction: column;
  }

  .md3-shop-layout > .md3-filter-sidebar {
    display: none;
  }

  .md3-toolbar__filter-btn {
    display: inline-flex;
  }
}

/* ── Mobile (≤ 768px) ── */

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
  }

  .section-padding {
    padding: 50px 0;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .section-desc {
    font-size: var(--font-size-base);
  }

  .md3-topbar {
    display: none;
  }

  .md3-header__inner {
    overflow: hidden;
  }

  .md3-hamburger {
    display: flex;
  }

  .md3-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    max-width: 80vw;
    height: 100vh;
    background: var(--color-surface);
    box-shadow: var(--elevation-5);
    padding: 72px var(--space-2) var(--space-3);
    transition: right 0.35s cubic-bezier(0.32, 0.72, 0, 1);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 999;
    display: block;
    flex: none;
  }

  .md3-nav.open {
    right: 0;
  }

  .md3-nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .md3-nav__list > li > a {
    padding: var(--space-2);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xs);
  }

  .md3-nav__list .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-radius: var(--radius-xs);
    padding: 0 var(--space-2);
    margin: 4px 0;
    background: var(--color-surface-container-low);
  }

  .md3-nav__list .menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: auto;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23334155' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat center;
    transition: transform var(--transition);
  }

  .md3-nav__list .menu-item-has-children.submenu-open > a::after {
    transform: rotate(180deg);
  }

  .md3-nav__mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: var(--space-2);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-surface-container-high);
  }

  .md3-nav__mobile-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border-radius: var(--radius-xs);
    color: var(--color-on-surface-variant);
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: background var(--transition);
    text-decoration: none;
  }

  .md3-nav__mobile-link:hover {
    background: var(--color-primary-container);
    color: var(--color-primary);
  }

  .hero-section {
    min-height: 70vh;
    margin-top: var(--header-height);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-number {
    font-size: var(--font-size-3xl);
  }

  .cta-title {
    font-size: var(--font-size-2xl);
  }

  .cta-actions {
    flex-direction: column;
  }

  .footer-grid,
  .md3-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .footer-bottom-content,
  .md3-footer__bar {
    flex-direction: column;
    text-align: center;
    gap: var(--space-1);
  }

  .content-wrapper {
    grid-template-columns: 1fr;
  }

  .posts-grid,
  .md3-posts-grid {
    grid-template-columns: 1fr;
  }

  ul.products {
    grid-template-columns: 1fr;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }

  .error-code {
    font-size: 5rem;
  }

  .filter-row {
    grid-template-columns: 1fr;
  }

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

  .solarichi-product-grid,
  .md3-product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .archive-header-title,
  .md3-archive-header__title {
    font-size: 1.35rem;
  }

  .archive-header-desc,
  .md3-archive-header__desc {
    font-size: var(--font-size-sm);
  }

  .products-toolbar,
  .md3-toolbar {
    flex-wrap: wrap;
    gap: 8px;
  }

  .toolbar-view-switcher,
  .md3-toolbar__views {
    display: none;
  }

  .solarichi-filter-drawer,
  .md3-filter-drawer {
    width: 100%;
    max-width: 100%;
  }

  .md3-card-content {
    padding: 12px;
  }

  .md3-archive-title,
  .md3-single-title {
    font-size: var(--font-size-2xl);
  }

  .md3-post-body {
    padding: 16px;
  }

  .md3-post-title {
    font-size: var(--font-size-base);
  }

  .md3-single-header {
    padding: 20px 20px 0;
  }

  .md3-single-content {
    padding: 20px;
    font-size: var(--font-size-sm);
  }

  .md3-single-footer {
    padding: 16px 20px 24px;
  }

  .comments-area {
    padding: 20px;
    border-radius: 20px;
  }

  .post-navigation .nav-links {
    grid-template-columns: 1fr;
  }

  .md3-card-title {
    font-size: 0.875rem;
  }

  .md3-card-price {
    font-size: 1rem;
  }

  .md3-search {
    align-items: center;
  }

  .md3-search__panel {
    padding: var(--space-3);
  }

  .md3-cart {
    width: 100%;
    max-width: 100vw;
  }

  .md3-landing-header__inner {
    gap: var(--space-1);
  }

  .md3-landing-header__actions .md3-btn--text span {
    display: none;
  }
}

/* ── Small Mobile (≤ 480px) ── */

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .action-row {
    flex-direction: column;
  }

  .trust-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solarichi-product-grid,
  .md3-product-grid {
    gap: 10px;
  }

  .md3-card-content {
    padding: 10px;
  }

  .products-toolbar,
  .md3-toolbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px;
  }

  .toolbar-end,
  .md3-toolbar__end {
    width: 100%;
    justify-content: space-between;
  }

  .toolbar-start,
  .md3-toolbar__start {
    width: 100%;
    justify-content: space-between;
  }

  .toolbar-result-count,
  .md3-toolbar__count {
    font-size: 0.8125rem;
  }

  .toolbar-orderby,
  .md3-toolbar__orderby {
    flex: 1;
    font-size: 0.75rem;
    padding: 6px 8px;
  }

  .solarichi-archive-header,
  .md3-archive-header {
    padding: 4px 0 12px;
  }

  .archive-header-title,
  .md3-archive-header__title {
    font-size: 1.15rem;
  }

  .archive-header-desc,
  .md3-archive-header__desc {
    font-size: 0.8rem;
    padding: 8px 12px;
    margin-top: 6px;
  }

  .solarichi-filter-drawer,
  .md3-filter-drawer {
    max-width: 100vw;
  }

  .md3-card-actions {
    opacity: 1;
    transform: none;
  }

  .md3-search__panel {
    padding: var(--space-2);
  }

  .floating-cta {
    bottom: 16px;
    left: 16px;
    gap: 10px;
  }

  .floating-btn {
    width: 48px;
    height: 48px;
  }

  .md3-archive-title {
    font-size: var(--font-size-xl);
  }

  .md3-archive-desc {
    font-size: var(--font-size-xs);
  }

  .md3-post-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .md3-single-title {
    font-size: var(--font-size-xl);
  }

  .md3-single-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .md3-toast {
    white-space: normal;
    max-width: calc(100vw - 32px);
    text-align: center;
  }

  .comment-list .children {
    padding-right: 16px;
  }
}

/* ── Extra Small (≤ 380px) ── */

@media (max-width: 380px) {
  .solarichi-product-grid,
  .md3-product-grid {
    grid-template-columns: 1fr;
  }
}