/*
 * Pop-up shell (inc/popups.php, assets/js/popup.js): overlay, dialog, close button, motion.
 * Centred dialog on desktop, bottom sheet at 620px and below. Each campaign styles its own
 * content in assets/css/popups/{id}.css under .scm-pop--{id}, and may set:
 *   --scm-pop-w        dialog max width (default 560px)
 *   --scm-pop-bg       dialog background (default #fff)
 *   --scm-pop-close-bg / --scm-pop-close-fg  close button colours
 * Buttons are qualified with .scm-pop (0,2,x) to beat the theme's bare <button> rule (DESIGN.md §10 #18).
 */

html.scm-pop-locked, html.scm-pop-locked body { overflow: hidden; }
html.scm-pop-locked body { padding-right: var(--scm-pop-sbw, 0px); }

.scm-pop {
  position: fixed; inset: 0; z-index: 100000;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6; color: var(--ink);
}
.scm-pop[hidden] { display: none; }
.scm-pop *, .scm-pop *::before, .scm-pop *::after { box-sizing: border-box; }

.scm-pop__backdrop {
  position: absolute; inset: 0;
  background: rgba(6, 29, 73, .64);
  -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px);
  opacity: 0; transition: opacity .2s ease;
}

.scm-pop__dialog {
  position: relative; width: 100%; max-width: var(--scm-pop-w, 560px);
  max-height: calc(100vh - 48px); max-height: calc(100dvh - 48px);
  overflow-x: hidden; overflow-y: auto; overscroll-behavior: contain;
  background: var(--scm-pop-bg, #fff);
  border-radius: var(--radius-panel);
  box-shadow: 0 30px 80px -24px rgba(6, 29, 73, .7), 0 10px 28px -10px rgba(13, 71, 161, .5);
  opacity: 0; transform: translateY(18px) scale(.98);
  transition: opacity .2s ease, transform .2s ease;
}
.scm-pop__dialog:focus { outline: none; }

.scm-pop.is-open .scm-pop__backdrop { opacity: 1; }
.scm-pop.is-open .scm-pop__dialog { opacity: 1; transform: none; }

.scm-pop button.scm-pop__close {
  -webkit-appearance: none; appearance: none;
  position: absolute; top: 12px; right: 12px; z-index: 3;
  width: 44px; height: 44px; padding: 0; margin: 0;
  display: flex; align-items: center; justify-content: center;
  border: 0; border-radius: 50%;
  background: var(--scm-pop-close-bg, rgba(13, 71, 161, .08));
  color: var(--scm-pop-close-fg, var(--navy));
  font-size: 18px; line-height: 1; cursor: pointer;
  transition: background var(--ease), transform var(--ease);
}
.scm-pop button.scm-pop__close:hover,
.scm-pop button.scm-pop__close:focus {
  background: var(--scm-pop-close-bg-hover, rgba(13, 71, 161, .16));
  color: var(--scm-pop-close-fg, var(--navy));
  transform: rotate(90deg);
}
.scm-pop button.scm-pop__close:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* Phones: bottom sheet */
@media (max-width: 620px) {
  .scm-pop { align-items: flex-end; padding: 0; }
  .scm-pop__dialog {
    max-width: none;
    max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px);
    border-radius: var(--radius-panel) var(--radius-panel) 0 0;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    transform: translateY(100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .scm-pop__backdrop, .scm-pop__dialog, .scm-pop button.scm-pop__close { transition: none; }
  .scm-pop__dialog { transform: none; }
}