/* ========================================================
   Messages — message list, rows, bubbles, avatar.
   ======================================================== */

.messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* Message row */
.msg-row {
  display: flex;
  gap: var(--spacing-md);
  max-width: 85%;
}

.msg-row.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-row.assistant {
  align-self: flex-start;
}

/* Avatar */
.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  font-weight: 600;
}

.msg-row.user .msg-avatar {
  background: var(--c-accent);
  color: #fff;
}

.msg-row.assistant .msg-avatar {
  background: #e5e7eb;
  color: var(--c-text-secondary);
}

/* Bubble */
.msg-bubble {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  line-height: 1.65;
  word-break: break-word;
}

.msg-row.user .msg-bubble {
  background: var(--c-user-bubble);
  color: var(--c-user-text);
  border-bottom-right-radius: var(--spacing-xs);
}

.msg-row.assistant .msg-bubble {
  background: var(--c-surface);
  color: var(--c-text);
  border: 1px solid var(--c-border);
  border-bottom-left-radius: var(--spacing-xs);
  box-shadow: var(--shadow-sm);
}

.msg-row.assistant .msg-bubble.naked {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
}

/* Bubble content — paragraphs */
.msg-bubble p { margin: 6px 0; }
.msg-bubble p:first-child { margin-top: 0; }
.msg-bubble p:last-child { margin-bottom: 0; }

/* Bubble content — code */
.msg-bubble code {
  background: var(--c-code-bg);
  padding: 2px 5px;
  border-radius: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.msg-row.user .msg-bubble code {
  background: var(--c-code-user-bg);
}

/* Bubble content — pre */
.msg-bubble pre {
  background: var(--c-pre-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
}

.msg-row.user .msg-bubble pre {
  background: var(--c-pre-user-bg);
}

/* Bubble content — lists */
.msg-bubble ul, .msg-bubble ol {
  padding-left: var(--spacing-xl);
  margin: var(--spacing-xs) 0;
}

/* Bubble content — blockquote */
.msg-bubble blockquote {
  border-left: 3px solid #d1d5db;
  padding-left: var(--spacing-md);
  color: var(--c-text-secondary);
  margin: 6px 0;
}

.msg-row.user .msg-bubble blockquote {
  border-color: rgba(255, 255, 255, 0.3);
  color: rgba(255, 255, 255, 0.85);
}

/* Bubble content — tables */
.msg-bubble table {
  border-collapse: collapse;
  width: 100%;
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
}

.msg-bubble th, .msg-bubble td {
  border: 1px solid #e5e7eb;
  padding: 6px 10px;
  text-align: left;
}

.msg-bubble th {
  background: #f9fafb;
  font-weight: 600;
}

/* ========================================================
   Assistant message body (simplified Claude Code CLI style)
   ======================================================== */

.msg-body {
  flex: 1;
  min-width: 0;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: var(--spacing-xs);
  box-shadow: var(--shadow-sm);
  line-height: 1.65;
}

/* Thinking: collapsed by default */
.think-line { margin-bottom: 4px; }

.think-badge {
  display: inline-block;
  font-size: 11px;
  color: var(--c-text-secondary);
  cursor: pointer;
  user-select: none;
  padding: 2px 6px;
  border-radius: var(--spacing-xs);
  background: #f3f4f6;
}
.think-badge:hover { background: #e5e7eb; }

.think-content {
  margin: 4px 0 8px 12px;
  font-size: var(--font-size-sm);
  color: var(--c-text-secondary);
  white-space: pre-wrap;
  max-height: 200px;
  overflow-y: auto;
  border-left: 2px solid #d1d5db;
  padding-left: 8px;
}

/* Tools: compact inline badge */
.tool-line { margin-bottom: 4px; }

.tool-badge {
  display: inline-block;
  font-size: 11px;
  cursor: pointer;
  user-select: none;
  padding: 2px 8px;
  border-radius: var(--spacing-xs);
  font-family: monospace;
  color: var(--c-text-secondary);
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
}
.tool-badge:hover { border-color: #d1d5db; }
.tool-badge.done { color: #059669; border-color: #a7f3d0; background: #ecfdf5; }
.tool-badge.running { color: #d97706; border-color: #fde68a; background: #fffbeb; }
.tool-badge.error { color: #dc2626; border-color: #fecaca; background: #fef2f2; }
.tool-badge.denied { color: #b45309; border-color: #fde68a; background: #fffbeb; }

.tool-detail {
  margin: 4px 0 8px 4px;
  padding: 8px 10px;
  background: #f9fafb;
  border-radius: var(--radius-md);
  border: 1px solid #e5e7eb;
  font-size: var(--font-size-sm);
  max-height: 260px;
  overflow-y: auto;
}
.tool-args { margin-bottom: 4px; }
.tool-args code { font-size: 11px; word-break: break-all; }
.tool-result pre {
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
  margin: 0;
}
.tool-error { color: #dc2626; font-size: 11px; }
.tool-status-icon { display: inline-block; margin-right: 3px; }
.tool-badge.running .tool-status-icon { animation: tool-spin 1.2s linear infinite; }
.tool-elapsed { color: var(--c-text-secondary); opacity: 0.7; margin-left: 6px; font-size: 10px; }
@keyframes tool-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Sub-agent run (nested under an `agent` tool card) */
.subagent-run {
  margin: 4px 0 8px 6px;
  border: 1px solid #e5e7eb;
  border-left: 2px solid var(--c-accent, #6366f1);
  border-radius: var(--radius-md);
  background: #fafbff;
  font-size: var(--font-size-sm);
}
.subagent-run .sa-hdr {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  cursor: pointer;
  user-select: none;
}
.subagent-run .sa-hdr:hover { background: #f3f4f6; }
.subagent-run .sa-status { font-size: 12px; }
.subagent-run .sa-status.done { color: #059669; }
.subagent-run .sa-status.running { color: #d97706; animation: tool-spin 1.2s linear infinite; }
.subagent-run .sa-status.failed, .subagent-run .sa-status.error { color: #dc2626; }
.subagent-run .sa-status.killed { color: #6b7280; }
.subagent-run .sa-type { font-weight: 600; color: var(--c-text-primary); }
.subagent-run .sa-meta { color: var(--c-text-secondary); font-size: 11px; }
.subagent-run .sa-arrow { margin-left: auto; font-size: 10px; color: var(--c-text-secondary); transition: transform 0.15s; }
.subagent-run .sa-arrow.open { transform: rotate(180deg); }
.subagent-run .sa-body {
  border-top: 1px solid #eef0f4;
  padding: 6px 10px;
  max-height: 320px;
  overflow-y: auto;
}
.subagent-run .sa-step { padding: 2px 0; }
.subagent-run .sa-tool-line { color: var(--c-text-primary); font-family: monospace; font-size: 11px; }
.subagent-run .sa-tool-icon { color: var(--c-accent, #6366f1); }
.subagent-run .sa-tool-args { margin: 2px 0 4px 16px; }
.subagent-run .sa-tool-args code { font-size: 10px; word-break: break-all; color: var(--c-text-secondary); }
.subagent-run .sa-result { margin: 2px 0 4px 16px; }
.subagent-run .sa-result pre {
  margin: 0;
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--c-text-secondary);
  max-height: 160px;
  overflow-y: auto;
}
.subagent-run .sa-text { margin: 4px 0; line-height: 1.6; }

/* Main text content */
.msg-text {
  font-size: var(--font-size-base);
  line-height: 1.7;
}
.msg-text p { margin: 6px 0; }
.msg-text p:first-child { margin-top: 0; }
.msg-text p:last-child { margin-bottom: 0; }
.msg-text code {
  background: var(--c-code-bg);
  padding: 2px 5px;
  border-radius: var(--spacing-xs);
  font-size: var(--font-size-sm);
}
.msg-text pre {
  background: var(--c-pre-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
}
.msg-text ul, .msg-text ol {
  padding-left: var(--spacing-xl);
  margin: var(--spacing-xs) 0;
}
.msg-text blockquote {
  border-left: 3px solid #d1d5db;
  padding-left: var(--spacing-md);
  color: var(--c-text-secondary);
  margin: 6px 0;
}
.msg-text table {
  border-collapse: collapse;
  width: 100%;
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
}
.msg-text th, .msg-text td {
  border: 1px solid #e5e7eb;
  padding: 6px 10px;
  text-align: left;
}
.msg-text th { background: #f9fafb; font-weight: 600; }

/* ========================================================
   File chips inside the input area
   ======================================================== */

.input-file-chips {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 0 2px;
}

.input-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #e0f2fe;
  border: 1px solid #7dd3fc;
  border-radius: 12px;
  padding: 2px 10px;
  font-size: 12px;
  color: #0369a1;
}

.input-file-chip-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: #0284c7;
  font-size: 14px;
  line-height: 1;
  padding: 0 2px;
  margin-left: 2px;
}
.input-file-chip-remove:hover { color: #dc2626; }

/* ========================================================
   File card — inline preview card in message stream
   ======================================================== */

.file-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  margin: 4px 0 8px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  max-width: 420px;
  transition: border-color var(--transition-fast);
}

.file-card:hover {
  border-color: var(--c-accent);
}

/* Preview — icon or image thumbnail */
.file-card-preview {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
}

.file-card-icon {
  width: 24px;
  height: 24px;
  color: var(--c-text-secondary);
}

.file-card-icon svg {
  width: 24px;
  height: 24px;
  display: block;
}

.file-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Info — file name and size */
.file-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.file-card-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-card-size {
  font-size: var(--font-size-xs);
  color: var(--c-text-tertiary);
}

/* Action buttons */
.file-card-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.file-card-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-bg);
  color: var(--c-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.file-card-btn:hover {
  background: var(--c-accent-light);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.file-card-btn svg {
  width: 16px;
  height: 16px;
}

/* ========================================================
   Full-width inline image preview (file-card-image)
   ======================================================== */

.file-card-wrapper {
  margin: 12px 0;
}

.file-card-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
}

.file-card-img-full {
  display: block;
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  background: #f5f5f5;
}

.file-card-img-full:hover {
  opacity: 0.92;
}

.file-card-image-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid var(--c-border);
  background: var(--c-surface);
  font-size: var(--font-size-sm);
}

.file-card-image-bar .file-card-name {
  flex: 1;
  font-weight: 500;
  color: var(--c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-card-image-bar .file-card-size {
  color: var(--c-text-tertiary);
  font-size: var(--font-size-xs);
}

/* ========================================================
   Inline markdown images (md-img-wrap)
   ======================================================== */

.md-img-wrap {
  display: block;
  margin: 12px 0;
}

.md-img-wrap img {
  display: block;
  max-width: 100%;
  max-height: 480px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.md-img-wrap img:hover {
  opacity: 0.88;
}

/* ========================================================
   Lightbox — full-screen image viewer
   ======================================================== */

.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox-overlay.visible {
  display: flex;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 24px;
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 28px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  z-index: 1;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.3);
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  z-index: 1;
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.3);
}

/* ========================================================
   Inline file chip (non-image files embedded in text)
   ======================================================== */

.inline-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  margin: 2px 4px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  text-decoration: none;
  color: var(--c-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
  vertical-align: middle;
}

.inline-file-chip:hover {
  border-color: var(--c-accent);
  background: var(--c-accent-light);
}

.inline-file-chip-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--c-text-secondary);
}

.inline-file-chip-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

.inline-file-chip-name {
  font-weight: 500;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inline-file-chip-size {
  color: var(--c-text-tertiary);
  font-size: var(--font-size-xs);
}

/* ========================================================
   Question popup (ask_user confirmation dialog)
   ======================================================== */

.qpopup-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease;
}

.qpopup-card {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  max-width: 480px;
  width: 90%;
  padding: var(--spacing-xl);
  animation: slideUp 0.2s ease;
}

.qpopup-header {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.qpopup-body {
  font-size: var(--font-size-base);
  color: var(--c-text);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.qpopup-context {
  font-size: var(--font-size-sm);
  color: var(--c-text-secondary);
  background: var(--c-bg);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  white-space: pre-wrap;
  max-height: 120px;
  overflow-y: auto;
}

.qpopup-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.qpopup-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  background: var(--c-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.qpopup-btn:hover {
  border-color: var(--c-accent);
  background: var(--c-accent-light);
}

.qpopup-btn.primary {
  border-color: var(--c-accent);
  background: var(--c-accent-light);
  font-weight: 500;
}

.qpopup-btn-label {
  font-size: var(--font-size-base);
  color: var(--c-text);
}

.qpopup-btn-desc {
  font-size: var(--font-size-xs);
  color: var(--c-text-secondary);
  margin-top: 2px;
}

.qpopup-input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: var(--font-size-base);
  outline: none;
  transition: border-color var(--transition-fast);
}

.qpopup-input:focus {
  border-color: var(--c-accent);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ========================================================
   Input area — single-row toolbar
   ======================================================== */

.input-area {
  border-top: 1px solid var(--c-border);
  background: var(--c-surface);
  padding: 10px 14px;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
}

.input-file-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.input-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--c-surface-hover);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 12px;
}

.input-file-chip-remove {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  color: var(--c-text-tertiary);
}

/* 消息上的「朗读」按钮：平时低调，hover 才亮，避免每条回复下面挂一排控件。 */
.msg-speak {
  align-self: flex-start;
  margin-top: 4px;
  font: inherit;
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--c-text-tertiary);
  cursor: pointer;
  transition: color 0.14s, border-color 0.14s;
}
.msg-speak:hover { color: var(--c-text); border-color: var(--c-border); }
.msg-speak.on { color: var(--c-accent); border-color: var(--c-accent-border); background: var(--c-accent-light); }

.input-hint {
  font-size: 11px;
  color: var(--c-text-tertiary);
  text-align: center;
  margin-top: 6px;
}

/* 语音识别失败时必须说清楚为什么，而不是静默什么都不发生 */
.input-hint-error {
  color: var(--c-danger, #dc2626);
  font-size: 12px;
  margin-top: 6px;
  word-break: break-word;
}

/* ---------- 对话模式（L3）：状态条 + 按钮 ---------- */
.talk-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding: 6px 10px;
  border: 1px solid var(--c-accent, #4f8cff);
  border-radius: 10px;
  background: color-mix(in srgb, var(--c-accent, #4f8cff) 10%, transparent);
  font-size: 12px;
}
.talk-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent, #4f8cff);
  box-shadow: 0 0 10px var(--c-accent, #4f8cff);
  transition: opacity 90ms linear;
}
.talk-phase { font-weight: 500; }
.talk-heard { opacity: 0.75; max-width: 42%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.talk-err { color: #e5484d; }
.talk-btn {
  margin-left: auto;
  padding: 3px 9px;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 12px;
}
.talk-btn + .talk-btn { margin-left: 0; }
.talk-btn:hover { border-color: var(--c-accent, #4f8cff); }
.talk-on { color: var(--c-accent, #4f8cff); }
.real-bar { border-color: #7c5cff; background: color-mix(in srgb, #7c5cff 12%, transparent); }
.real-bar .talk-dot { background: #7c5cff; box-shadow: 0 0 10px #7c5cff; }
.real-say { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--c-text, inherit); }