/* ============================================
   MD3 Message Bubbles & Content
   ============================================ */
.message {
  display: flex;
  flex-direction: column;
  max-width: 75%;
  position: relative;
}

.message + .message { margin-top: 2px; }
.message.own { align-self: flex-end; align-items: flex-end; }
.message.other { align-self: flex-start; align-items: flex-start; }

/* ---- MD3 Message Bubble ---- */
.message-content {
  background: var(--bubble-other);
  color: var(--bubble-other-text);
  padding: 10px 14px;
  border-radius: var(--md-sys-shape-corner-large);
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: var(--md-sys-typescale-body-large-line);
  font-size: var(--md-sys-typescale-body-large-size);
  position: relative;
  width: fit-content;
  max-width: 100%;
  -webkit-user-select: text;
  user-select: text;
}

/* MD3 Shape: own messages → extra-small (more square) */
.message.own .message-content {
  background: var(--bubble-own);
  color: var(--bubble-own-text);
  border-radius: var(--md-sys-shape-corner-large) var(--md-sys-shape-corner-extra-small)
                   var(--md-sys-shape-corner-large) var(--md-sys-shape-corner-large);
}

/* MD3 Shape: other messages → extra-small */
.message.other .message-content {
  border-radius: var(--md-sys-shape-corner-extra-small) var(--md-sys-shape-corner-large)
                   var(--md-sys-shape-corner-large) var(--md-sys-shape-corner-large);
}

/* ---- Text Messages ---- */
.text-message {
  white-space: pre-wrap;
  -webkit-user-select: text;
  user-select: text;
  cursor: text;
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* ---- Markdown Rendered ---- */
.text-message.markdown-rendered {
  white-space: normal;
  padding-right: 28px;
}
.text-message.markdown-rendered h1, .text-message.markdown-rendered h2,
.text-message.markdown-rendered h3, .text-message.markdown-rendered h4 { margin: 0.4em 0 0.2em; font-weight: 600; line-height: 1.3; }
.text-message.markdown-rendered h1 { font-size: 1.3em; }
.text-message.markdown-rendered h2 { font-size: 1.15em; }
.text-message.markdown-rendered h3 { font-size: 1.05em; }
.text-message.markdown-rendered p { margin: 0.25em 0; line-height: 1.5; }
.text-message.markdown-rendered > *:first-child { margin-top: 0; }
.text-message.markdown-rendered > *:last-child { margin-bottom: 0; }
.text-message.markdown-rendered ul, .text-message.markdown-rendered ol { margin: 0.3em 0; padding-left: 1.2em; }
.text-message.markdown-rendered li { margin: 0.1em 0; }
.text-message.markdown-rendered blockquote {
  margin: 0.3em 0; padding: 0.3em 0.6em;
  border-left: 3px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-surface-variant);
  border-radius: var(--md-sys-shape-corner-extra-small);
}
.message.own .text-message.markdown-rendered blockquote {
  border-left-color: rgba(0,0,0,0.12);
  background: rgba(0,0,0,0.04);
}
.text-message.markdown-rendered code {
  background: var(--md-sys-color-surface-variant);
  padding: 0.1em 0.35em;
  border-radius: var(--md-sys-shape-corner-extra-small);
  font-family: var(--font-mono);
  font-size: 0.88em;
}
.message.own .text-message.markdown-rendered code {
  background: rgba(0,0,0,0.06);
}
.text-message.markdown-rendered pre {
  background: var(--md-sys-color-surface-variant);
  padding: 0.5em 0.6em;
  border-radius: var(--md-sys-shape-corner-extra-small);
  overflow-x: auto;
  margin: 0.4em 0;
  font-size: 0.88em;
}
.message.own .text-message.markdown-rendered pre {
  background: rgba(0,0,0,0.04);
}
.text-message.markdown-rendered pre code { background: none; padding: 0; font-size: inherit; }
.text-message.markdown-rendered strong { font-weight: 600; }
.text-message.markdown-rendered em { font-style: italic; }
.text-message.markdown-rendered a {
  color: var(--md-sys-color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.message.own .text-message.markdown-rendered a {
  color: color-mix(in srgb, var(--md-sys-color-on-primary-container) 80%, transparent);
  text-decoration: underline;
  font-weight: 600;
}

/* ---- Markdown Toggle ---- */
.markdown-toggle {
  position: absolute;
  bottom: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  background: var(--md-sys-color-surface-variant);
  border-radius: var(--md-sys-shape-corner-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  opacity: 0;
  z-index: 1;
  -webkit-user-select: none;
  user-select: none;
  transition: opacity var(--md-sys-duration-medium1) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-duration-medium1) var(--md-sys-motion-easing-emphasized-decelerate);
  transform: scale(0.8);
}
.message-content:hover .markdown-toggle,
.message-content:focus-within .markdown-toggle {
  opacity: 0.7;
  transform: scale(1);
}
.markdown-toggle:hover, .markdown-toggle:focus-visible {
  opacity: 1 !important;
  background: var(--md-sys-color-outline-variant);
  transform: scale(1.1);
}
.message.own .markdown-toggle {
  background: rgba(255,255,255,0.2);
}
.message.own .markdown-toggle:hover {
  background: rgba(255,255,255,0.3);
}

/* ---- Message Meta ---- */
.message-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 4px 0;
  font-size: var(--md-sys-typescale-label-small-size);
  color: var(--md-sys-color-outline);
  letter-spacing: var(--md-sys-typescale-label-small-tracking);
}
.message.own .message-meta { justify-content: flex-end; }
.message.other .message-meta { justify-content: flex-start; }

.message-meta .message-time {
  color: var(--md-sys-color-outline);
  font-size: var(--md-sys-typescale-label-small-size);
}

/* ---- Message Status ---- */
.message-status {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: var(--md-sys-typescale-label-small-size);
}
.message-status.status-sent { color: var(--md-sys-color-outline); }
.message-status.status-sending { color: var(--md-sys-color-secondary); }
.message-status.status-failed { color: var(--md-sys-color-error); }
.message-status.status-read { color: var(--md-sys-color-primary); }

/* ---- Retry Button ---- */
.message-retry-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 10px;
  cursor: pointer;
  transition: transform var(--md-sys-duration-short3) var(--md-sys-motion-easing-emphasized-decelerate);
}
.message-retry-btn:active { transform: scale(1.3); }

/* ---- File Message ---- */
.file-message {
  min-width: 220px;
  max-width: 280px;
}
.file-info {
  display: flex;
  align-items: center;
  gap: 10px;
}
.file-icon { font-size: 28px; flex-shrink: 0; }
.file-details { flex: 1; min-width: 0; }
.file-name {
  font-size: var(--md-sys-typescale-body-medium-size);
  font-weight: var(--font-weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-all;
  line-height: var(--md-sys-typescale-body-medium-line);
}
.file-size {
  font-size: var(--md-sys-typescale-body-small-size);
  color: var(--md-sys-color-outline);
  margin-top: 2px;
}
.file-download-btn {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-primary);
  transition: transform var(--md-sys-duration-short3) ease;
}
.file-download-btn:active { transform: scale(0.9); }

/* ---- Image Preview ---- */
.image-preview {
  max-width: 240px;
  max-height: 200px;
  border-radius: var(--md-sys-shape-corner-small);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}
.image-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--md-sys-duration-medium2) ease;
}
.image-preview img[data-loaded="false"] { opacity: 0; }
.image-preview img[data-loaded="true"] { opacity: 1; }
.image-preview img:not([src]) { opacity: 0; }

.image-loading-placeholder {
  position: absolute;
  inset: 0;
  background: var(--md-sys-color-surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-outline);
  font-size: var(--md-sys-typescale-body-small-size);
  animation: pulse 1.5s ease infinite;
}