.msg-preview-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(var(--black-color-rgb), 0.32);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.msg-preview-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.msg-preview-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 720px;
  max-width: 100vw;
  background: var(--white-color);
  border-left: 1px solid rgba(var(--black-color-rgb), 0.08);
  z-index: 999;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition:
    transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0s 0.35s;
  box-shadow: -10px 0 40px rgba(var(--black-color-rgb), 0.08);
}

.msg-preview-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
  transition:
    transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0s 0s;
}

.msg-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid rgba(var(--black-color-rgb), 0.08);
  flex-shrink: 0;
}

.msg-preview-title {
  color: var(--text-color);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.msg-preview-sub {
  font-size: 0.82rem;
  color: var(--color-gray-400);
  margin: 3px 0 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.msg-preview-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 0.5rem;
  background: var(--color-neutral-off-white);
  border: 1px solid rgba(var(--black-color-rgb), 0.08);
  color: var(--color-gray-400);
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.msg-preview-close:hover {
  color: var(--text-color);
  border-color: rgba(var(--black-color-rgb), 0.2);
}

.msg-preview-close svg.lucide,
.msg-preview-close i[data-lucide] {
  width: 20px;
  height: 20px;
}

.msg-preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1.75rem 2rem;
}

.msg-preview-body::-webkit-scrollbar {
  width: 4px;
}

.msg-preview-body::-webkit-scrollbar-track {
  background: transparent;
}

.msg-preview-body::-webkit-scrollbar-thumb {
  background: var(--color-gray-200);
  border-radius: 2px;
}

.msg-preview-body::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

.msg-preview-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .msg-preview-drawer {
    width: 100vw;
  }
  .msg-preview-header {
    padding: 1rem 1.125rem;
  }
  .msg-preview-body {
    padding: 1.125rem 1.125rem 1.75rem;
  }
}