/* ==========================================================================
   IndoSmartHub - Mobile-First Responsive Breakpoints
   Zero horizontal overflow | Fluid touch targets | Clean readability
   ========================================================================== */

/* --- Prevent horizontal scroll on ALL viewports --- */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

*, *::before, *::after {
  max-width: 100%;
}

/* Ensure images/media never overflow */
img, video, iframe, embed, object {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Tablet / Medium Devices (max-width: 1024px)
   ========================================================================== */
@media screen and (max-width: 1024px) {
  :root {
    --header-height: 70px;
  }

  .section {
    padding: 64px 0;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

  .hero-content .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-stats-bar {
    justify-content: center;
    gap: 20px;
  }

  .hero-visual {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }

  .product-card {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 26px;
  }

  .product-card.reverse .product-visual {
    order: 2;
  }

  .product-card.reverse .product-info {
    order: 1;
  }

  .calculator-card {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 26px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

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

/* ==========================================================================
   Tablet & Mobile (max-width: 1024px) — Clean Drawer Navigation Activates
   ========================================================================== */
@media screen and (max-width: 1024px) {

  /* Show hamburger, hide desktop CTA */
  .mobile-toggle {
    display: flex;
  }

  .nav-actions .btn-sm {
    display: none;
  }

  /* --- Sleek Slide-Down Mobile Nav --- */
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
    z-index: 999;
    overflow-y: auto;
    max-height: calc(100vh - var(--header-height));
  }

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

  .nav-link {
    width: 100%;
    font-size: 1rem;
    font-weight: 600;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-main);
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(2, 132, 199, 0.1);
    color: var(--primary-light);
  }

  .nav-link::after {
    display: none;
  }

  .mobile-lang-wrapper {
    display: flex;
  }

  /* Typography */
  h1 {
    font-size: clamp(1.7rem, 6vw, 2.2rem);
    line-height: 1.25;
  }

  h2 {
    font-size: clamp(1.4rem, 4.5vw, 1.75rem);
  }

  h3 {
    font-size: clamp(1.1rem, 3.5vw, 1.35rem);
  }

  /* Grids: single column */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .feature-preview-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .calc-grid-options {
    grid-template-columns: 1fr 1fr;
  }

  /* Hero */
  .floating-badge-1,
  .floating-badge-2 {
    display: none;
  }

  .hero-stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding-top: 18px;
  }

  .hero-stat-number {
    font-size: 1.45rem;
  }

  .hero-stat-label {
    font-size: 0.74rem;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 14px;
  }

  /* Floating WA */
  .floating-wa-container {
    bottom: 18px;
    right: 18px;
  }

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

  .floating-wa-btn svg {
    width: 24px;
    height: 24px;
  }

  /* WA popup: don't overflow screen edge */
  .floating-wa-popup {
    width: calc(100vw - 36px);
    max-width: 300px;
    right: 0;
    bottom: 60px;
  }
}

/* ==========================================================================
   Mobile Devices (max-width: 640px)
   ========================================================================== */
@media screen and (max-width: 640px) {
  :root {
    --header-height: 64px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 30px;
  }

  /* Prevent any grid min from causing overflow */
  .services-grid,
  .articles-grid,
  .feature-preview-grid,
  .calc-features-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .calc-grid-options {
    grid-template-columns: 1fr;
  }

  /* Hero */
  .hero-section {
    padding-top: calc(var(--header-height) + 24px);
    padding-bottom: 48px;
    min-height: auto;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stats-bar {
    grid-template-columns: 1fr;
    gap: 14px;
    text-align: center;
  }

  .hero-visual {
    max-width: 100%;
  }

  /* Cards */
  .card-glass {
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }

  .product-card {
    padding: 18px 16px;
  }

  .product-visual {
    padding: 14px;
  }

  .calculator-card {
    padding: 16px 14px;
  }

  .contact-form-card {
    padding: 20px 16px;
  }

  .modal-card {
    padding: 22px 16px;
  }

  /* Buttons: fluid on small phones */
  .btn-lg {
    padding: 13px 22px;
    font-size: 0.95rem;
  }

  /* Article */
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .article-single-body {
    font-size: 0.97rem;
    line-height: 1.75;
  }

  /* Page banner */
  .page-banner {
    padding-top: calc(var(--header-height) + 24px);
    padding-bottom: 28px;
  }

  .page-banner h1 {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .footer-about p {
    max-width: 100%;
  }

  .site-footer {
    padding: 40px 0 20px;
  }

  /* WA popup full-width on very small screens */
  .floating-wa-popup {
    width: calc(100vw - 32px);
    right: 0;
    bottom: 58px;
  }

  /* Marquee */
  .marquee-item {
    font-size: 0.82rem;
    gap: 6px;
  }

  /* Trust strip */
  .trust-strip {
    padding: 18px 0;
  }

  /* FAQ */
  .faq-question {
    font-size: 0.9rem;
    padding: 14px 16px;
  }

  /* Highlight badge */
  .highlight-badge {
    font-size: 0.76rem;
    padding: 5px 12px;
  }

  /* Mockup: prevent overflow in hero visual */
  .hero-dashboard-mockup {
    padding: 14px;
  }

  .mockup-widget {
    padding: 10px;
    gap: 8px;
  }

  .mockup-widget-icon {
    width: 34px;
    height: 34px;
    font-size: 1rem;
    flex-shrink: 0;
  }

  .mockup-widget-info h5 {
    font-size: 0.82rem;
  }

  .mockup-widget-info p {
    font-size: 0.72rem;
  }

  /* Nav action area: keep theme toggle visible */
  .nav-actions {
    gap: 8px;
  }

  .theme-toggle-btn {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }

  .mobile-toggle {
    width: 36px;
    height: 36px;
  }

  .lang-switcher-btn {
    padding: 3px 8px;
    font-size: 0.72rem;
  }
}

/* ==========================================================================
   Ultra-Small (max-width: 380px) — Galaxy Fold, etc.
   ========================================================================== */
@media screen and (max-width: 380px) {
  .container {
    padding-left: 10px;
    padding-right: 10px;
  }

  .nav-actions {
    gap: 5px;
  }

  .lang-switcher-btn {
    padding: 2px 6px;
    font-size: 0.68rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .brand-logo {
    font-size: 1.1rem;
  }

  .brand-logo .logo-icon {
    width: 32px;
    height: 32px;
  }

  .hero-stat-number {
    font-size: 1.25rem;
  }

  .card-glass {
    padding: 14px 12px;
  }

  .btn {
    font-size: 0.88rem;
    padding: 10px 16px;
  }
}