/* ============================================
   Message Bubbles & Content
   WeChat-accurate design
   ============================================ */

/* ---- Message Container ---- */
.message {
  display: flex;
  flex-direction: column;
  max-width: 75%;
  position: relative;
  padding: 0;
}

.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;
}

/* ---- Message Bubble ---- */
.message-content {
  background: var(--bubble-other);
  color: var(--bubble-other-text);
  padding: 8px 12px;
  border-radius: 4px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: 1.45;
  font-size: 15px;
  position: relative;
  width: fit-content;
  max-width: 100%;
  -webkit-user-select: text;
  user-select: text;
}

.message.own .message-content {
  background: var(--bubble-own);
  color: var(--bubble-own-text);
}

/* ---- 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: 24px;
}

.text-message.markdown-rendered h1,
.text-message.markdown-rendered h2,
.text-message.markdown-rendered h3,
.text-message.markdown-rendered h4,
.text-message.markdown-rendered h5,
.text-message.markdown-rendered h6 {
  margin: 0.4em 0 0.2em;
  font-weight: var(--font-bold);
  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(--color-gray-300);
  background: var(--color-gray-50);
  border-radius: 2px;
}

.message.own .text-message.markdown-rendered blockquote {
  border-left-color: rgba(0, 0, 0, 0.15);
  background: rgba(0, 0, 0, 0.05);
}

.text-message.markdown-rendered code {
  background: var(--color-gray-100);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.88em;
}

.message.own .text-message.markdown-rendered code {
  background: rgba(0, 0, 0, 0.08);
}

.text-message.markdown-rendered pre {
  background: var(--color-gray-100);
  padding: 0.5em 0.6em;
  border-radius: 4px;
  overflow-x: auto;
  margin: 0.4em 0;
  font-size: 0.88em;
}

.message.own .text-message.markdown-rendered pre {
  background: rgba(0, 0, 0, 0.06);
}

.text-message.markdown-rendered pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.text-message.markdown-rendered strong { font-weight: var(--font-bold); }
.text-message.markdown-rendered em { font-style: italic; }

.text-message.markdown-rendered a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.message.own .text-message.markdown-rendered a {
  color: #1a6a1a;
  text-decoration: underline;
}

.text-message.markdown-rendered hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: 0.5em 0;
}

/* ---- Markdown Toggle ---- */
.markdown-toggle {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  opacity: 0;
  z-index: 1;
  -webkit-user-select: none;
  user-select: none;
  transition: opacity var(--duration-fast) ease;
}

.message-content:hover .markdown-toggle {
  opacity: 0.6;
}

.markdown-toggle:hover {
  opacity: 1 !important;
  background: rgba(0, 0, 0, 0.12);
}

.message.own .markdown-toggle {
  background: rgba(255, 255, 255, 0.25);
}

/* ---- Message Meta ---- */
.message-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--color-gray-500);
  padding: 2px 2px 0;
  line-height: 1;
}

.message.own .message-meta {
  justify-content: flex-end;
}

.message.other .message-meta {
  justify-content: flex-start;
}

.message-time {
  font-size: 11px;
  color: var(--color-gray-500);
}

.message-status {
  font-size: 11px;
  opacity: 0.8;
}

.status-sending { color: var(--color-warning); }
.status-sent { color: var(--color-success); }
.status-failed { color: var(--color-danger); }

/* ---- File Message ---- */
.file-message {
  min-width: 220px;
  max-width: 280px;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-icon {
  font-size: 2rem;
  flex-shrink: 0;
  line-height: 1;
}

.file-details {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.file-name {
  font-weight: var(--font-medium);
  font-size: 14px;
  line-height: 1.3;
  word-break: break-all;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.file-size {
  font-size: 12px;
  color: var(--color-gray-500);
  margin-top: 2px;
}

.message.own .file-size {
  color: rgba(0, 0, 0, 0.5);
}

.download-btn {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: var(--font-medium);
  flex-shrink: 0;
  white-space: nowrap;
  transition: opacity var(--duration-fast) ease;
}

.download-btn:active {
  opacity: 0.8;
}

.message.own .download-btn {
  background: rgba(0, 0, 0, 0.12);
  color: var(--bubble-own-text);
}

/* ---- Image Preview ---- */
.image-preview {
  margin-top: 8px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-gray-100);
  max-width: 240px;
  position: relative;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-preview img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 200px;
  object-fit: cover;
}

.image-preview img:active {
  opacity: 0.9;
}

.image-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--color-gray-500);
  font-size: 13px;
  gap: 6px;
}

.image-loading .loading-spinner {
  font-size: 18px;
}

.image-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  color: var(--color-gray-500);
  font-size: 13px;
  gap: 8px;
}

.image-error .retry-btn {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
}

/* ---- Top Loading Indicator ---- */
.top-loading-indicator {
  display: none;
  justify-content: center;
  align-items: center;
  padding: 8px 0;
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}

.top-loading-indicator.fade-in {
  opacity: 1;
}

.top-loading-content {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-gray-500);
  font-size: 13px;
}

.top-loading-spinner {
  animation: spin 1s linear infinite;
  font-size: 14px;
}