/* ================================================================
   Responsive layout
   Natural section height, consistent spacing, and non-overlapping artwork.
   ================================================================ */

@media (max-width: 1499.98px) {
  :root {
    --container: 1320px;
    --section-space: clamp(82px, 7vw, 118px);
    --content-gap: clamp(42px, 5vw, 82px);
  }

  body { font-size: 16px; }
  .page-container { width: min(calc(100% - 56px), var(--container)); }

  .site-header { height: 112px; }
  .site-header .navbar-brand img { width: 160px; }
  .site-header .navbar-nav { gap: clamp(28px, 3vw, 52px); }
  .site-header .nav-link { font-size: 16px; }

  .hero-section {
    min-height: max(790px, 100svh);
    padding-top: clamp(145px, 11vw, 185px);
  }

  .hero-copy { width: min(680px, 56%); }
  .hero-scene { width: min(80vw, 1260px); }
  .hero-title.hero-title-art { width: min(690px, 100%); }

  .btn-ibma {
    min-height: 56px;
    padding-inline: 31px;
    font-size: 15px;
  }

  .button-wide { min-width: 330px; }
}

@media (max-width: 1199.98px) {
  :root {
    --container: 980px;
    --section-space: clamp(80px, 9vw, 110px);
    --content-gap: clamp(46px, 7vw, 72px);
  }

  .page-container { width: min(calc(100% - 48px), var(--container)); }

  .site-header,
  .site-header.is-sticky { height: 92px; }

  .site-header { position: absolute; }
  .site-header.is-sticky { position: fixed; }

  .site-header .navbar-brand img,
  .site-header.is-sticky .navbar-brand img { width: 146px; }

  .hero-section {
    min-height: max(790px, 100svh);
    padding: 155px 0 100px;
  }

  .hero-copy { width: min(700px, 72%); }
  .hero-scene {
    right: -12%;
    width: 112%;
    opacity: .76;
  }

  .hero-ambient {
    background:
      linear-gradient(90deg, rgba(2,10,36,.99) 0%, rgba(2,10,36,.94) 44%, rgba(2,10,36,.58) 69%, rgba(2,10,36,.12) 100%),
      radial-gradient(circle at 18% 23%, rgba(0,123,255,.09), transparent 28%);
  }

  .hero-title.hero-title-art { width: min(640px, 100%); }
  .hero-hex { right: -5%; }

}

@media (max-width: 991.98px) {
  :root {
    --section-space: clamp(76px, 10vw, 98px);
    --content-gap: clamp(38px, 7vw, 60px);
  }

  body { font-size: 15px; }
  .page-container { width: min(calc(100% - 42px), 820px); }

  .navbar-toggler { display: block; }

  .hero-section {
    min-height: 820px;
    padding-top: 145px;
  }

  .hero-copy { width: min(660px, 80%); }
  .hero-scene {
    right: -22%;
    width: 126%;
    opacity: .6;
  }

  .hero-ambient {
    background:
      linear-gradient(90deg, rgba(2,10,36,.995) 0%, rgba(2,10,36,.95) 52%, rgba(2,10,36,.66) 76%, rgba(2,10,36,.25) 100%),
      linear-gradient(180deg, rgba(2,10,36,.02), rgba(2,10,36,.45));
  }

  .hero-title.hero-title-art { width: min(590px, 100%); }
  .hero-actions { gap: 16px 20px; }

  .whats-layout,
  .speakers-section .full-width-layout > .row,
  .schedule-section .full-width-layout > .row,
  .why-layout,
  .about-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .whats-copy,
  .speakers-copy,
  .schedule-copy,
  .why-copy,
  .about-copy {
    width: 100%;
    max-width: 900px;
    margin-inline: auto;
  }

  .speakers-copy,
  .why-copy { order: 1; }

  .speakers-visual,
  .why-visual { order: 2; }

  .whats-visual > img { max-width: 720px; }
  .speakers-visual img { max-width: 700px; }
  .schedule-visual img { max-width: 790px; }
  .why-visual img { max-width: 790px; }
  .about-visual img { max-width: 820px; }

  .section-lead,
  .section-lead.compact { max-width: 820px; }

  .feature-grid,
  .speaker-grid { max-width: 860px; }

  .schedule-copy .section-lead { max-width: 760px; }
  .schedule-list { max-width: 700px; }

  .hotel-hex {
    left: 7%;
    width: 36%;
  }

  .feature-grid,
  .speaker-grid {
    gap: 22px 30px;
  }

  .venue-row {
    align-items: flex-start;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-space: clamp(70px, 12vw, 88px);
    --content-gap: clamp(34px, 9vw, 48px);
  }

  .page-container { width: calc(100% - 34px); }

  .site-header,
  .site-header.is-sticky { height: 80px; }

  .site-header .navbar-brand img,
  .site-header.is-sticky .navbar-brand img { width: 128px; }

  section[id] { scroll-margin-top: 84px; }

  .hero-section {
    min-height: 820px;
    padding: 126px 0 84px;
  }

  .hero-scene {
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 68% center;
    opacity: .38;
  }

  .hero-ambient {
    background:
      linear-gradient(90deg, rgba(2,10,36,.995) 0%, rgba(2,10,36,.96) 62%, rgba(2,10,36,.64) 100%),
      linear-gradient(180deg, rgba(2,10,36,.08), rgba(2,10,36,.78));
  }

  .hero-copy {
    width: 100%;
    max-width: none;
  }

  .hero-hex { display: none; }
  .hero-title.hero-title-art { width: min(520px, 100%); }
  .hero-tagline { margin: 22px 0 27px; }

  .event-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
  }

  .countdown {
    min-height: 104px;
    margin-bottom: 32px;
    border-radius: 9px;
  }

  .countdown-cell { padding: 15px 4px; }
  .countdown-cell strong { font-size: clamp(26px, 7vw, 36px); }
  .countdown-cell span { margin-top: 8px; font-size: clamp(8px, 2.2vw, 10px); }
  .countdown-cell:not(:last-child)::after { top: 18px; bottom: 18px; }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    /* width: min(390px, 100%); */
  }

  .hero-actions .btn-outline,
  .hero-actions .btn-gradient {
    width: 100%;
    min-width: 0;
  }

  .btn-ibma {
    min-height: 52px;
    padding-inline: 25px;
    font-size: 13px;
  }

  .button-medium,
  .button-wide { min-width: min(100%, 300px); }

  .section-title.section-title-art { margin-bottom: 20px; }
  #whatsOnTitle img { width: min(315px, 85vw); }
  #speakersTitle img { width: min(325px, 85vw); }
  #scheduleTitle img { width: min(320px, 85vw); }
  #whyTitle img { width: min(365px, 90vw); }
  #aboutTitle img { width: min(500px, 92vw); }

  .feature-grid,
  .speaker-grid {
    margin-top: 38px;
  }

  .icon-label {
    min-height: 78px;
    gap: 18px;
  }

  .line-icon {
    flex-basis: 64px;
    width: 64px;
    height: 64px;
  }

  .schedule-list { margin-top: 34px; }
  .schedule-list li { grid-template-columns: 90px minmax(0, 1fr); }

  .why-list { margin-top: 34px; }

  .stats-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 24px;
  }

  .venue-row {
    align-items: stretch;
    flex-direction: column;
    margin-top: 62px;
  }

  .venue-row p { flex-basis: auto; text-align: center;}
  .venue-row .venue-art { display: block; margin: 0 0 12px; }
  .venue-row .venue-art img { width: 112px; }
  .venue-row .btn-ibma { align-self: center; }

  .registration-modal .modal-header { padding: 23px 20px 10px; }
  .registration-modal .modal-body { padding: 10px 20px 24px; }
}

@media (max-width: 679.98px) {
  .feature-grid,
  .speaker-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0px;
  }

  .whats-copy,
  .speakers-copy,
  .schedule-copy,
  .why-copy,
  .about-copy {
    max-width: none;
  }
}

@media (max-width: 575.98px) {
  :root {
    --section-space: clamp(64px, 16vw, 78px);
    --content-gap: 34px;
  }

  .page-container { width: calc(100% - 28px); }

  .hero-section {
    min-height: 790px;
    padding-top: 116px;
  }

  .hero-scene {
    object-position: 64% center;
    opacity: .32;
  }

  .hero-title.hero-title-art { width: min(480px, 100%); }
  .hero-tagline { font-size: 17px; }

  .countdown-cell strong { font-size: clamp(23px, 7vw, 30px); }
  .countdown-cell span { letter-spacing: 0; }

  .whats-visual > img,
  .speakers-visual img,
  .schedule-visual img,
  .why-visual img,
  .about-visual img {
    width: 100%;
  }

  .schedule-list li {
    grid-template-columns: 82px minmax(0, 1fr);
    font-size: 14px;
  }

  .schedule-list time { font-size: 13px; }
  .why-list li { font-size: 15px; }

  .stat-item strong { font-size: 32px; }
  .stat-item span { font-size: 13px; }

  .center-action .btn-ibma { width: min(100%, 290px); }
  .mobile-menu { width: min(88vw, 340px) !important; }
}

@media (max-width: 399.98px) {
  .page-container { width: calc(100% - 22px); }

  .hero-section {
    min-height: 760px;
    padding-top: 108px;
  }

  .meta-item { font-size: 12px; }
  .meta-item img { width: 31px; height: 31px; }

  .countdown-cell { padding-inline: 2px; }
  .countdown-cell strong { font-size: 21px; }
  .countdown-cell span { font-size: 7px; }

  .line-icon {
    flex-basis: 58px;
    width: 58px;
    height: 58px;
  }

  .icon-label h3 { font-size: 16px; }
  .schedule-list li { grid-template-columns: 76px minmax(0, 1fr); }
}