/* 个人工作站：对话常驻，模块按需打开；不把功能表单塞进对话侧栏。 */
:root { --accent: #2f7d6d; --user: #dcebe6; }
@media (prefers-color-scheme: dark) { :root { --accent: #58ac97; --user: #243d37; } }
#tab-sessions.active { grid-template-columns: 224px minmax(0, 1fr); min-height: calc(100dvh - 175px); }
.assistant-identity { display: flex; align-items: center; gap: 12px; padding: 8px 2px 18px; }
.assistant-identity p { margin: 3px 0 0; }
.assistant-mark { border-radius: 50%; background: var(--accent); color: white; width: 42px; height: 42px; display: grid; place-items: center; font-family: serif; font-size: 22px; }
.workspace-nav { display: grid; gap: 3px; margin-bottom: 22px; }
.workspace-nav button { background: transparent; color: var(--text); text-align: left; padding: 10px 12px; display: flex; justify-content: space-between; }
.workspace-nav button:hover, .workspace-nav button[aria-expanded="true"] { background: var(--user); }
.workspace-nav span { color: var(--muted); font-size: 12px; }
.session-history { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 12px; }
.session-history summary { cursor: pointer; color: var(--muted); margin-bottom: 12px; }
.workspace-window { position: fixed; z-index: 50; top: 110px; right: 24px; bottom: 28px; width: min(600px, calc(100vw - 270px)); border: 1px solid var(--line); border-radius: 14px; background: var(--panel); box-shadow: 0 12px 45px #0003; display: flex; flex-direction: column; overflow: hidden; }
.workspace-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.workspace-header h2 { margin: 0; font-size: 18px; }
.workspace-toolbar { padding: 12px 16px 0; display: flex; flex-wrap: wrap; gap: 8px; }
.workspace-toolbar input { flex: 1; min-width: 80px; }
#workspace-feedback { margin: 8px 16px; overflow-wrap: anywhere; }
.workspace-content { padding: 4px 16px 20px; overflow: auto; flex: 1; min-height: 0; }
.workspace-empty { padding: 36px 12px; text-align: center; color: var(--muted); }
.workspace-record { padding: 14px 0; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.workspace-record h3 { margin: 0 0 5px; font-size: 15px; }
.workspace-record p { margin: 5px 0; white-space: pre-wrap; }
.workspace-record .row { margin: 10px 0 0; }
.workspace-record .meta { color: var(--muted); font-size: 12px; }
.workspace-form { display: grid; gap: 12px; }
.workspace-form label { display: grid; gap: 5px; font-size: 13px; }
.workspace-form input, .workspace-form select, .workspace-form textarea { width: 100%; min-width: 0; }
.workspace-form textarea { resize: vertical; min-height: 84px; }
.workspace-form input[type="checkbox"] { width: auto; }
.workspace-form .row { margin-top: 6px; }
.workspace-form button { padding: 8px 16px; }
.workspace-detail { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 360px; overflow: auto; }
.workspace-breadcrumb { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; width: 100%; }
.workspace-breadcrumb button { padding: 4px 8px; }
.file-drop-active { outline: 2px dashed var(--accent); outline-offset: -6px; }
.attachment-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 12px; }
.attachment-chips:empty { display: none; }
.attachment-chip { display: flex; align-items: center; gap: 6px; padding: 4px 8px; background: var(--user); border-radius: 6px; max-width: 100%; overflow-wrap: anywhere; }
.attachment-chip button { padding: 0 4px; }
/* 正文和底部工具置于同一输入框内，菜单独立浮起，不挤动对话或确认卡。 */
.send { display: flex; flex: none; flex-direction: column; gap: 8px; margin: 12px; padding: 14px 14px 10px; border: 1px solid var(--line); border-radius: 24px; background: var(--panel); box-shadow: 0 2px 8px #00000006; }
.send:focus-within { border-color: var(--accent); }
.send textarea { flex: none; width: 100%; min-height: 64px; max-height: 220px; padding: 2px 4px; border: 0; border-radius: 0; background: transparent; outline: none; resize: none; }
.send .attachment-chips { padding: 0 4px; }
.composer-toolbar, .composer-actions { display: flex; align-items: center; gap: 8px; }
.composer-toolbar { justify-content: space-between; }
.composer-tools { position: relative; }
#attach-file { display: grid; place-items: center; width: 40px; height: 40px; padding: 8px; border: 0; border-radius: 50%; color: var(--text); }
#attach-file svg { width: 24px; height: 24px; }
#attach-file:hover, #attach-file[aria-expanded="true"] { background: var(--assistant); }
.composer-actions button { min-height: 40px; border-radius: 20px; padding: 8px 18px; }
.attachment-menu { position: absolute; z-index: 60; bottom: calc(100% + 10px); left: 0; width: min(270px, calc(100vw - 70px)); max-height: min(280px, calc(100dvh - 240px)); overflow-y: auto; display: grid; gap: 2px; padding: 8px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); box-shadow: 0 8px 30px #0002; }
.attachment-menu-title { color: var(--muted); font-size: 12px; margin: 2px 10px 4px; }
.attachment-menu button { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 10px; border-radius: 9px; color: var(--text); background: transparent; text-align: left; }
.attachment-menu button:hover, .attachment-menu button:focus { background: var(--assistant); }
.attachment-menu svg { width: 20px; height: 20px; flex: none; }
.send button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#workspace-draft:empty { display: none; }
#workspace-draft .workspace-form { max-height: 320px; overflow: auto; }
.workspace-context { color: var(--accent); border-left: 3px solid var(--accent); padding: 8px 12px; margin-bottom: 12px; }
.chat-pane { max-height: calc(100dvh - 150px); min-height: 480px; }
.transcript { min-height: 0; }
@media (min-width: 1400px) { body.workspace-open #tab-sessions { padding-right: 620px; } }
@media (max-width: 800px) {
  #tab-sessions.active { grid-template-columns: 1fr; }
  .list-pane { padding: 10px; }
  .assistant-identity { padding: 0 0 8px; }
  .workspace-nav { display: flex; flex-wrap: wrap; margin: 0 0 8px; gap: 2px; }
  .workspace-nav button { padding: 6px 10px; gap: 8px; }
  .session-history { margin: 0; padding: 4px; }
  #new-session { margin: 4px 0; }
  .workspace-window { top: 76px; right: 12px; bottom: 12px; width: calc(100vw - 24px); }
  .chat-pane { min-height: 480px; max-height: none; }
  .workspace-header { padding: 12px; }
  .workspace-content { padding: 8px 12px; }
}