/* 数电智境 · 通知与操作弹窗。最后加载，也可作为线上独立样式层发布。 */
.ui-modal-backdrop {
  padding: max(1.25rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right))
    max(1.25rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left));
  background: rgb(28 32 45 / 30%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  overscroll-behavior: contain;
}

.ui-modal.ui-modal,
.ui-toast.ui-toast {
  --popup-ink: var(--color-text-primary, #1d1d1f);
  --popup-muted: var(--color-neutral-700, #515154);
  --popup-surface: #fdfdfe;
  --popup-soft: #f3f4f8;
  --popup-line: rgb(63 67 87 / 10%);
  color: var(--popup-ink);
  background: var(--popup-surface);
  border: 0;
  box-shadow: 0 24px 72px rgb(25 30 48 / 20%), 0 4px 12px rgb(25 30 48 / 6%);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  text-shadow: none;
}

.ui-modal { width: min(100%, 32rem); }

.ui-modal.ui-modal {
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - max(1.25rem, env(safe-area-inset-top)) - max(1.25rem, env(safe-area-inset-bottom)));
  border-radius: 1.5rem;
  overflow: hidden;
  animation: popup-enter 200ms var(--ease-decel, ease-out);
}

.ui-modal .ui-modal-header {
  flex: 0 1 auto;
  min-height: 0;
  gap: 1rem;
  padding: 1.75rem 1.75rem 1.25rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.ui-modal-header > div { min-width: 0; }

.ui-modal .ui-modal-header h2 {
  padding-top: .25rem;
  color: var(--popup-ink);
  font-size: 1.25rem;
  font-weight: 650;
  line-height: 1.45;
  letter-spacing: -.02em;
  overflow-wrap: anywhere;
}

.ui-modal .ui-modal-header p {
  margin-top: .65rem;
  color: var(--popup-muted);
  font-size: .9375rem;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.ui-modal .ui-modal-body {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  padding: .25rem 1.75rem 1.75rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  overflow-wrap: anywhere;
  scrollbar-width: thin;
  scrollbar-color: #b8bdcc transparent;
}

.ui-modal-body > :first-child { margin-top: 0; }
.ui-modal-body > :last-child { margin-bottom: 0; }

.ui-modal .ui-modal-footer {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: .75rem;
  padding: 1.125rem 1.75rem 1.375rem;
  border-top: 1px solid var(--popup-line);
  background: #f7f8fb;
}

/* 同时兼容管理员表单在 body 内的操作栏。 */
.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button {
  min-width: 6rem;
  min-height: 2.75rem;
  height: auto;
  padding: .65rem 1.125rem;
  border-radius: .875rem;
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: normal;
  overflow-wrap: anywhere;
  text-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: background-color 150ms ease, box-shadow 150ms ease;
}

.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button--primary {
  color: #fff;
  border: 1px solid transparent;
  background: var(--color-primary, #514fcf);
  box-shadow: 0 3px 8px rgb(69 65 167 / 16%);
}

.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button--primary:not(:disabled):hover {
  background: var(--color-primary-hover, #4643b5);
  transform: none;
}

.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button--secondary {
  color: #424451;
  border: 1px solid #dcdfe8;
  background: #fff;
  box-shadow: none;
}

.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button--secondary:not(:disabled):hover {
  color: var(--popup-ink);
  border-color: #c3c7d5;
  background: #edeff5;
  box-shadow: none;
  transform: none;
}

.ui-modal :is(.ui-modal-footer, .admin-modal-actions) .ui-button:disabled {
  box-shadow: none;
  opacity: .55;
  transform: none;
}

/* 统一关闭图形；保留原按钮的可访问名称和事件。 */
.ui-modal-header > .ui-icon-button,
.ui-toast > .ui-icon-button {
  position: relative;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  min-height: 2.75rem;
  margin: -.25rem -.5rem 0 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #666b7b;
  background: transparent;
  box-shadow: none;
  font-size: 0;
  transition: background-color 150ms ease, color 150ms ease;
}

.ui-modal-header > .ui-icon-button::before,
.ui-modal-header > .ui-icon-button::after,
.ui-toast > .ui-icon-button::before,
.ui-toast > .ui-icon-button::after {
  content: "";
  position: absolute;
  width: .875rem;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  transform: rotate(45deg);
}

.ui-modal-header > .ui-icon-button::after,
.ui-toast > .ui-icon-button::after { transform: rotate(-45deg); }

.ui-modal-header > .ui-icon-button:hover,
.ui-toast > .ui-icon-button:hover {
  color: var(--popup-ink);
  background: var(--popup-soft);
  transform: none;
}

.ui-modal :is(button, a, select, input, textarea):focus-visible,
.ui-toast button:focus-visible {
  outline: 2px solid var(--color-primary, #514fcf);
  outline-offset: 3px;
}

/* 公告以阅读为主，题目、日期与正文有各自的层次。 */
.ui-modal.ui-modal:has(.announcement-reader) { width: min(100%, 36rem); }
.ui-modal:has(.announcement-reader) .ui-modal-header { padding-bottom: 1rem; }
.announcement-reader h3 {
  margin: .25rem 0 .5rem;
  color: var(--popup-ink);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.65;
}
.announcement-reader .announcement-date {
  margin: 0 0 1.25rem;
  color: var(--popup-muted);
  font-size: .8125rem;
  font-variant-numeric: tabular-nums;
  opacity: 1;
}
.announcement-reader .announcement-body {
  padding-top: 1.25rem;
  border-top: 1px solid var(--popup-line);
  color: #3e414e;
  font-size: .9375rem;
  line-height: 1.9;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.announcement-reader .announcement-picker {
  gap: .5rem;
  margin-bottom: 1.5rem;
  color: var(--popup-muted);
}
.announcement-reader .announcement-picker select {
  min-height: 2.75rem;
  padding: .625rem .75rem;
  border: 1px solid #dcdfe8;
  border-radius: .75rem;
  background: #fff;
  color: var(--popup-ink);
  font: inherit;
}

/* 轻量通知：移除发光竖条，语义色用于小尺寸状态标记。 */
.ui-toast-viewport {
  top: max(1.25rem, env(safe-area-inset-top));
  right: max(1.25rem, env(safe-area-inset-right));
  bottom: auto;
  width: min(25rem, calc(100vw - 2.5rem));
  max-height: calc(100dvh - 2.5rem);
  gap: .625rem;
  overflow-y: auto;
  scrollbar-width: thin;
}
.ui-toast.ui-toast {
  --toast-signal: var(--color-primary, #514fcf);
  --toast-tint: #efeffc;
  align-items: start;
  grid-template-columns: 1.875rem minmax(0, 1fr) 2.75rem;
  gap: .75rem;
  padding: 1rem 1rem 1rem 1.125rem;
  border-radius: 1rem;
  box-shadow: 0 8px 28px rgb(25 30 48 / 13%), 0 2px 6px rgb(25 30 48 / 5%);
  animation: popup-toast-enter 180ms ease-out;
}
.ui-toast.ui-toast--success { --toast-signal: #237d47; --toast-tint: #eaf5ee; }
.ui-toast.ui-toast--warning { --toast-signal: #91630c; --toast-tint: #fbf3df; }
.ui-toast.ui-toast--danger { --toast-signal: #bb354a; --toast-tint: #fbedf0; }
.ui-toast .ui-toast-indicator {
  display: grid;
  place-items: center;
  width: 1.875rem;
  height: 1.875rem;
  margin-top: .0625rem;
  border-radius: 50%;
  background: var(--toast-tint);
  color: var(--toast-signal);
  box-shadow: none;
}
.ui-toast-indicator::before {
  content: "";
  width: .25rem;
  height: .75rem;
  border-radius: .125rem;
  background: currentColor;
}
.ui-toast--success .ui-toast-indicator::before {
  width: .625rem;
  height: .375rem;
  margin-top: -.125rem;
  border: solid currentColor;
  border-width: 0 0 2px 2px;
  border-radius: 0;
  background: transparent;
  transform: rotate(-45deg);
}
.ui-toast.ui-toast strong {
  margin: .1875rem 0 0;
  color: var(--popup-ink);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.ui-toast.ui-toast p {
  margin: .25rem 0 0;
  color: var(--popup-muted);
  font-size: .875rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}
.ui-toast > .ui-icon-button { margin-top: -.375rem; }

@keyframes popup-enter {
  from { opacity: .5; transform: translateY(8px) scale(.985); }
  to { opacity: 1; transform: none; }
}
@keyframes popup-toast-enter {
  from { opacity: .5; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 36rem) {
  .ui-modal-backdrop,
  .ui-modal-backdrop:has(.announcement-reader),
  .ui-modal-backdrop:has(.announcement-publish-form) {
    place-items: center;
    padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right))
      max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  }
  .ui-modal.ui-modal {
    max-height: calc(100dvh - max(1rem, env(safe-area-inset-top)) - max(1rem, env(safe-area-inset-bottom)));
    border-radius: 1.25rem;
  }
  .ui-modal .ui-modal-header { padding: 1.25rem 1.25rem 1rem; }
  .ui-modal .ui-modal-header h2 { font-size: 1.1875rem; }
  .ui-modal .ui-modal-body { padding: .25rem 1.25rem 1.25rem; }
  .ui-modal .ui-modal-footer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 7.5rem), 1fr));
    gap: .625rem;
    padding: 1rem 1.25rem 1.25rem;
  }
  .ui-modal .ui-modal-footer .ui-button { min-width: 0; width: 100%; }
  .ui-toast-viewport {
    top: max(.75rem, env(safe-area-inset-top));
    right: max(.75rem, env(safe-area-inset-right));
    left: max(.75rem, env(safe-area-inset-left));
    bottom: auto;
    width: auto;
    max-height: calc(100dvh - var(--mobile-sticky-offset, 6rem) - 1.5rem);
  }
  .ui-toast.ui-toast { gap: .625rem; padding: .875rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ui-modal.ui-modal, .ui-toast.ui-toast { animation: none; }
  .ui-modal .ui-button, .ui-modal .ui-icon-button, .ui-toast .ui-icon-button { transition: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .ui-modal-backdrop { background: rgb(28 32 45 / 48%); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media (forced-colors: active) {
  .ui-modal.ui-modal, .ui-toast.ui-toast { border: 1px solid CanvasText; }
  .ui-modal-header > .ui-icon-button::before, .ui-modal-header > .ui-icon-button::after,
  .ui-toast > .ui-icon-button::before, .ui-toast > .ui-icon-button::after { background: ButtonText; }
}