/* -------------------------------------------------------------------------- */
/* QT modal — reusable overlay dialog.                                        */
/* Depends on ChatQT theme tokens from assets/css/tailwind.css (:root / .dark). */
/* Markup reference: partials/qt-modal.example.html                           */
/* Behavior: assets/js/qt-modal.js                                            */
/* -------------------------------------------------------------------------- */

.qt-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  box-sizing: border-box;
  padding-top: max(0.75rem, env(safe-area-inset-top));
  padding-right: max(0.75rem, env(safe-area-inset-right));
  padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
  padding-left: max(0.75rem, env(safe-area-inset-left));
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-end;
}

@media (min-width: 640px) {
  .qt-modal {
    align-items: center;
    justify-content: center;
    padding: 2.5rem;
  }
}

.qt-modal:not([hidden]) {
  display: flex;
}

.qt-modal[hidden] {
  display: none !important;
}

.qt-modal__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  background-color: rgba(10, 10, 10, 0.25);
  transition: background-color 0.15s ease;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

html.dark .qt-modal__backdrop {
  background-color: rgba(10, 10, 10, 0.4);
}

.qt-modal__backdrop:hover,
.qt-modal__backdrop:focus-visible {
  background-color: rgba(10, 10, 10, 0.35);
}

html.dark .qt-modal__backdrop:hover,
html.dark .qt-modal__backdrop:focus-visible {
  background-color: rgba(10, 10, 10, 0.5);
}

.qt-modal__panel {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 32rem;
  margin-inline: auto;
  max-height: min(
    calc(100vh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 1.5rem),
    36rem
  );
  border-radius: 1rem;
  border: 1px solid var(--brand-line);
  background-color: var(--brand-paper);
  box-shadow: 0 24px 64px -24px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  outline: none;
}

@supports (height: 100dvh) {
  .qt-modal__panel {
    max-height: min(
      calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 1.5rem),
      36rem
    );
  }
}

@media (min-width: 640px) {
  .qt-modal__panel {
    max-height: min(calc(100vh - 5rem), 40rem);
  }

  @supports (height: 100dvh) {
    .qt-modal__panel {
      max-height: min(calc(100dvh - 5rem), 40rem);
    }
  }
}

.qt-modal__header {
  flex: 0 0 auto;
  padding: 1.5rem max(1.25rem, env(safe-area-inset-left)) 1.25rem
    max(1.25rem, env(safe-area-inset-right));
  border-bottom: 1px solid var(--brand-line);
}

@media (min-width: 640px) {
  .qt-modal__header {
    padding: 2.5rem 2rem 1.75rem;
  }
}

.qt-modal__title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--brand-ink);
}

.qt-modal__subtitle {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--brand-subtle);
}

.qt-modal__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 1.5rem max(1.25rem, env(safe-area-inset-left)) 1.5rem
    max(1.25rem, env(safe-area-inset-right));
}

@media (min-width: 640px) {
  .qt-modal__body {
    padding: 2.25rem 2rem;
  }
}

.qt-modal__list {
  margin: 0;
  padding-inline-start: 1.25rem;
  padding-inline-end: 0;
  list-style: disc;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--brand-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.qt-modal__list li {
  padding-inline-start: 0.25rem;
}

.qt-modal__callout {
  margin: 1.25rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  font-weight: 600;
  color: var(--brand-ink);
}

.qt-modal__footer {
  flex: 0 0 auto;
  padding: 1.25rem max(1.25rem, env(safe-area-inset-left)) max(1rem, env(safe-area-inset-bottom))
    max(1.25rem, env(safe-area-inset-right));
  border-top: 1px solid var(--brand-line);
  background-color: var(--brand-soft);
}

@media (min-width: 640px) {
  .qt-modal__footer {
    padding: 2rem;
  }
}

.qt-modal__cta {
  box-sizing: border-box;
  display: inline-flex;
  width: 100%;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 9999px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  background-color: var(--brand-inverse-bg);
  color: var(--brand-on-inverse);
  transition: background-color 0.15s ease;
}

.qt-modal__cta:hover {
  background-color: var(--brand-inverse-hover);
}

.qt-modal__cta:focus-visible {
  outline: 2px solid var(--brand-focus-ring);
  outline-offset: 3px;
}