/* FileCraft Web 样式 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f3f4f6;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

button { font-family: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
.brand {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .3px;
}
.web-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: 1px 8px;
  vertical-align: 2px;
}
.tagline { color: var(--muted); font-size: 13px; }

/* ---------- 布局 ---------- */
.layout {
  max-width: 1180px;
  margin: 16px auto;
  padding: 0 20px 40px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.pad { padding: 18px; }

/* ---------- 左侧文件区 ---------- */
.files-panel {
  width: 330px;
  flex-shrink: 0;
  padding: 16px;
  position: relative;
  overflow: hidden;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.panel-head h2 { font-size: 15px; margin: 0; }
.upload-btns { display: flex; gap: 6px; }

.drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(37, 99, 235, .08);
  border: 2px dashed var(--primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--primary);
  z-index: 5;
  pointer-events: none;
}

.list-tools {
  display: flex;
  align-items: center;
  padding: 6px 2px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.check-all-label { display: flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }
.spacer { flex: 1; }

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-height: 120px;
  max-height: 46vh;
  overflow-y: auto;
}
.file-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 4px;
  border-bottom: 1px solid #f1f2f4;
}
.file-list li:hover { background: #f8fafc; }
.file-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: default;
}
.file-name .fname { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-name .fmeta { display: block; font-size: 11px; color: var(--muted); }
.badge {
  flex-shrink: 0;
  font-size: 11px;
  border-radius: 999px;
  padding: 1px 8px;
}
.badge.ok { color: #047857; background: #ecfdf5; border: 1px solid #a7f3d0; }
.badge.no { color: #92400e; background: #fffbeb; border: 1px solid #fde68a; }
.file-ops { display: flex; gap: 4px; flex-shrink: 0; }
.empty-hint { color: var(--muted); padding: 24px 8px !important; text-align: center; }

.hint {
  color: var(--muted);
  font-size: 12px;
  margin: 12px 2px 0;
}

/* ---------- 右侧主区 ---------- */
.main { flex: 1; min-width: 0; }

.tabs {
  display: flex;
  padding: 4px;
  gap: 4px;
  margin-bottom: 14px;
}
.tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 9px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  border-radius: 8px;
  cursor: pointer;
}
.tab:hover { background: #f3f4f6; }
.tab.active { background: var(--primary); color: #fff; }

.tab-page { display: none; }
.tab-page.active { display: block; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.muted { color: var(--muted); font-size: 13px; }

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: background .12s, border-color .12s;
}
.btn:hover:not(:disabled) { background: #f8f9fa; border-color: #d1d5db; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn.subtle { padding: 5px 10px; font-size: 12px; }
.btn.small { padding: 5px 11px; font-size: 12px; }
.btn-link {
  border: none;
  background: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 4px;
}
.btn-link:hover { text-decoration: underline; }
.btn-link.danger { color: var(--danger); }

.text-input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}
.text-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }

/* ---------- 转换结果 ---------- */
.convert-results { display: flex; flex-direction: column; gap: 8px; }
.convert-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fafbfc;
}
.convert-item .cname {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}
.convert-item.err { border-color: #fecaca; background: #fef2f2; }
.convert-item .cerr { color: var(--danger); font-size: 12px; flex: 1; }
.convert-item.ok .cstat { color: #047857; font-size: 12px; flex-shrink: 0; }
.empty-state { color: var(--muted); text-align: center; padding: 36px 10px; }

/* ---------- 总结 ---------- */
.summary-controls {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.progress {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  color: #1e40af;
  margin-bottom: 14px;
}
.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid #bfdbfe;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.seg-group { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg {
  border: none;
  background: #fff;
  padding: 5px 14px;
  font-size: 12px;
  cursor: pointer;
  color: var(--muted);
}
.seg.active { background: var(--primary); color: #fff; }

.summary-textarea {
  width: 100%;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-family: ui-monospace, Consolas, "Microsoft YaHei", monospace;
  font-size: 13px;
  line-height: 1.7;
  resize: vertical;
  outline: none;
}
.summary-textarea:focus { border-color: var(--primary); }

/* ---------- Markdown 渲染 ---------- */
.md-preview {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 22px;
  background: #fff;
  overflow-x: auto;
}
.md-preview h1, .md-preview h2, .md-preview h3, .md-preview h4 { margin: 1.1em 0 .5em; line-height: 1.4; }
.md-preview h1:first-child, .md-preview h2:first-child, .md-preview h3:first-child { margin-top: 0; }
.md-preview h1 { font-size: 21px; border-bottom: 2px solid var(--border); padding-bottom: 6px; }
.md-preview h2 { font-size: 17px; }
.md-preview h3 { font-size: 15px; }
.md-preview table { border-collapse: collapse; margin: 10px 0; width: 100%; font-size: 13px; }
.md-preview th, .md-preview td { border: 1px solid #d1d5db; padding: 6px 10px; text-align: left; }
.md-preview th { background: #eef2f8; }
.md-preview code {
  background: #f3f4f6;
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 12.5px;
  font-family: ui-monospace, Consolas, monospace;
}
.md-preview pre {
  background: #f6f8fa;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
}
.md-preview pre code { background: none; padding: 0; }
.md-preview blockquote {
  border-left: 3px solid #d1d5db;
  margin: 10px 0;
  padding: 2px 14px;
  color: var(--muted);
}
.md-preview hr { border: none; border-top: 1px solid var(--border); margin: 18px 0; }

/* ---------- 问答 ---------- */
.qa-card { display: flex; flex-direction: column; }
.chat-box {
  min-height: 320px;
  max-height: 56vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 4px 2px;
  margin-bottom: 14px;
}
.chat-system {
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
  padding: 10px 30px;
}
.bubble {
  max-width: 86%;
  padding: 9px 14px;
  border-radius: 12px;
  font-size: 13.5px;
  overflow-x: auto;
}
.bubble.user {
  align-self: flex-end;
  background: var(--primary);
  color: #fff;
  border-bottom-right-radius: 4px;
  white-space: pre-wrap;
  word-break: break-word;
}
.bubble.assistant {
  align-self: flex-start;
  background: #fff;
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}
.bubble.assistant.md { padding: 12px 16px; }
.bubble .md-preview { border: none; padding: 0; }
.bubble.pending { color: var(--muted); }
.chat-form { display: flex; gap: 10px; }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 24px;
}
.modal-box {
  width: min(860px, 100%);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
}
.modal-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.modal-title {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.btn-close {
  border: none;
  background: none;
  font-size: 16px;
  cursor: pointer;
  color: var(--muted);
  padding: 4px 8px;
  border-radius: 6px;
}
.btn-close:hover { background: #f3f4f6; color: var(--text); }
.modal-body { overflow-y: auto; }

/* ---------- 提示条 ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  background: #111827;
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 99;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
  max-width: 80vw;
}
.toast.err { background: var(--danger); }

.hidden { display: none !important; }

/* ---------- 顶栏用户区 ---------- */
.user-area { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.user-name { font-size: 13px; color: var(--muted); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-inner .spacer { flex: 1; }

/* ---------- 历史记录面板 ---------- */
.history-section { margin-top: 16px; }
.history-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: #fafbfc;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
}
.history-toggle:hover { background: #f3f4f6; }
.history-toggle .arrow { display: inline-block; transition: transform .15s; color: var(--muted); }
.history-toggle.open .arrow { transform: rotate(90deg); }
.history-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: none;
  flex-direction: column;
  gap: 6px;
  max-height: 300px;
  overflow-y: auto;
}
.history-list.open { display: flex; }
.history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
.history-item:hover { background: #f8fafc; }
.history-main { flex: 1; min-width: 0; }
.history-title {
  font-weight: 500;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.history-meta { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-src {
  flex-shrink: 0;
  font-size: 10.5px;
  border-radius: 999px;
  padding: 1px 7px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.history-src.ai { color: #1d4ed8; border-color: #bfdbfe; background: #eff6ff; }
.history-src.manual { color: #047857; border-color: #a7f3d0; background: #ecfdf5; }
.history-empty { color: var(--muted); font-size: 12.5px; text-align: center; padding: 10px; }

/* ---------- 问答工具条 ---------- */
.chat-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.qa-card .history-list { margin-bottom: 10px; max-height: 220px; }

/* ---------- 登录页 ---------- */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #eff6ff 0%, #f3f4f6 55%, #eef2ff 100%);
}
.login-card {
  width: min(400px, calc(100vw - 32px));
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 10px 40px rgba(30, 64, 175, .10);
  padding: 34px 32px 26px;
}
.login-brand { font-size: 24px; font-weight: 700; text-align: center; }
.login-tagline { text-align: center; color: var(--muted); font-size: 12.5px; margin: 6px 0 26px; }
.login-form { display: flex; flex-direction: column; gap: 8px; }
.login-label { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.login-btn { margin-top: 16px; padding: 10px; font-size: 14px; }
.login-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 12.5px;
  margin-top: 6px;
}
.login-hint {
  margin-top: 24px;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  font-size: 12px;
  color: var(--muted);
}
.login-hint-title { font-weight: 600; margin-bottom: 6px; color: var(--text); }
.login-hint-row { margin: 3px 0; }
.login-hint code {
  background: #f3f4f6;
  border-radius: 4px;
  padding: 0 5px;
  font-size: 11.5px;
}
.login-hint-note { margin-top: 8px; color: #9ca3af; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .layout { flex-direction: column; }
  .files-panel { width: 100%; }
  .file-list { max-height: 32vh; }
}