/* ── Main layout ─────────────────────────────────────────────────────────── */
#main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* ── Welcome view ────────────────────────────────────────────────────────── */
.welcome-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  gap: 32px;
}

.welcome-title {
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--text);
  text-align: center;
}

.welcome-input-wrap {
  width: 100%;
  max-width: 760px;
}

/* ── Chat view ───────────────────────────────────────────────────────────── */
.chat-view {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0 8px;
  display: flex;
  flex-direction: column;
}

.chat-messages {
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ── Message bubbles ─────────────────────────────────────────────────────── */
.msg-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: relative;
}

/* User bubble */
.msg-user {
  align-self: flex-end;
  max-width: 78%;
  padding: 10px 16px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 18px 18px 4px 18px;
  font-size: 15px;
  color: var(--text);
  word-break: break-word;
  position: relative;
}

/* Assistant bubble - transparent */
.msg-assistant {
  align-self: flex-start;
  max-width: 92%;
  padding: 4px 0 24px;
  font-size: 15px;
  color: var(--text);
  word-break: break-word;
  position: relative;
}

.msg-assistant.editing {
  background: #1e2028;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 14px 16px 50px;
}

/* Version navigator */
.msg-version-nav {
  position: absolute;
  bottom: -4px;
  right: 0;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity var(--transition);
}

.msg-group:hover .msg-version-nav { opacity: 1; }

.msg-version-nav button {
  display: flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.msg-version-nav button:hover { color: var(--text); background: var(--bg-hover); }

/* Message actions */
.msg-actions {
  position: absolute;
  bottom: 4px;
  left: 0;
  display: flex;
  gap: 3px;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.msg-group:hover .msg-actions {
  opacity: 1;
  pointer-events: auto;
}

.msg-action-btn {
  display: flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
}
.msg-action-btn:hover { color: var(--text); background: var(--bg-hover); }

/* Edit toolbar in bubble */
.edit-actions {
  position: absolute;
  bottom: 10px;
  right: 12px;
  display: flex;
  gap: 6px;
}

/* Thinking animation */
.msg-thinking {
  display: flex; gap: 4px; align-items: center;
  padding: 10px 0;
}
.thinking-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-muted);
  animation: thinkBounce 1.4s infinite ease-in-out;
}
.thinking-dot:nth-child(2) { animation-delay: 0.2s; }
.thinking-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes thinkBounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-6px); opacity: 1; }
}

/* Code blocks */
.code-block {
  margin: 10px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0d0e11;
}
[data-theme="light"] .code-block { background: #1a1b20; }

.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 14px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid var(--border);
}
.code-lang {
  font-size: 12px; font-family: var(--font-mono);
  color: var(--text-muted);
}
.code-copy-btn {
  font-size: 11px; color: var(--text-muted);
  padding: 2px 8px; border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}
.code-copy-btn:hover { color: var(--text); background: var(--bg-hover); }

.code-block pre {
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  font-family: var(--font-mono);
  line-height: 1.6;
  color: #e2e8f0;
}
.code-block code { background: none; padding: 0; }

/* Inline code */
.msg-assistant code, .msg-user code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-active);
  padding: 1px 5px;
  border-radius: 4px;
}

/* Tables */
.msg-assistant table {
  border-collapse: collapse;
  width: 100%;
  margin: 10px 0;
  font-size: 14px;
}
.msg-assistant th, .msg-assistant td {
  border: 1px solid var(--border-bright);
  padding: 7px 12px;
  text-align: left;
}
.msg-assistant th { background: var(--bg-raised); font-weight: 600; }
.msg-assistant tr:nth-child(even) { background: rgba(255,255,255,0.02); }

/* Images/video/audio in chat */
.msg-media {
  max-width: 420px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 8px 0;
  position: relative;
}
.msg-media img {
  display: block; width: 100%;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity var(--transition);
}
.msg-media img:hover { opacity: 0.9; }
.msg-media video, .msg-media audio {
  width: 100%;
  border-radius: var(--radius-md);
}
.media-download-btn {
  position: absolute; top: 8px; right: 8px;
  padding: 4px 10px; border-radius: var(--radius-full);
  background: rgba(0,0,0,0.6); color: white; font-size: 11px;
  opacity: 0; transition: opacity var(--transition);
}
.msg-media:hover .media-download-btn { opacity: 1; }

/* Tool call bubble */
.msg-tool-call {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-full);
  background: var(--bg-raised); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-dim);
  cursor: pointer; margin: 4px 0;
  transition: border-color var(--transition), color var(--transition);
}
.msg-tool-call:hover { border-color: var(--blue-bright); color: var(--text); }
.msg-tool-call svg { color: var(--yellow); }

/* Span colors from AI */
span[data-color="green"] { color: #4ade80; }
span[data-color="blue"] { color: #60a5fa; }
span[data-color="red"] { color: #f87171; }
span[data-color="orange"] { color: #fb923c; }
span[data-color="yellow"] { color: #facc15; }
span[data-color="purple"] { color: #c084fc; }
span[data-color="teal"] { color: #2dd4bf; }
span[data-color="gold"] { color: #e5c846; }
span[data-color="coral"] { color: #f97316; }
span[data-color="pink"] { color: #f472b6; }

/* Pasted content chip */
.pasted-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--radius-full);
  background: var(--bg-raised); border: 1px solid var(--border-bright);
  font-size: 12px; color: var(--text-dim); cursor: pointer;
  margin: 4px 0;
}
.pasted-chip .chip-remove {
  width: 14px; height: 14px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--text-muted);
  transition: background var(--transition);
}
.pasted-chip .chip-remove:hover { background: var(--bg-hover); color: var(--text); }

/* Attached image thumb */
.attach-thumb {
  display: inline-block;
  width: 48px; height: 48px;
  border-radius: var(--radius-sm); overflow: hidden;
  position: relative; cursor: pointer;
}
.attach-thumb img { width: 100%; height: 100%; object-fit: cover; }
.attach-thumb .thumb-remove {
  position: absolute; top: -4px; right: -4px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--border-bright);
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; color: var(--text);
}

/* SVG side panel */
#svg-panel {
  position: fixed; right: 0; top: 0; bottom: 0;
  width: 320px; background: var(--bg-surface);
  border-left: 1px solid var(--border-bright);
  z-index: 200; display: flex; flex-direction: column;
  animation: slideInRight 0.2s ease;
}
#svg-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
}
#svg-panel-content { flex: 1; overflow: auto; padding: 16px; }
#svg-panel img { max-width: 100%; border-radius: var(--radius-sm); }

/* Generating animation */
.msg-generating {
  animation: generatingGlow 2s ease infinite;
}
@keyframes generatingGlow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}