* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overscroll-behavior: none; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: #f2f3f7;
  font-size: 15px;
  color: #222;
}

.app { height: 100vh; height: 100dvh; overflow: hidden; position: relative; }
.hidden { display: none !important; }

/* ---- 页面滑动 ---- */
.page {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  background: #f2f3f7;
  transition: transform 0.28s ease;
  will-change: transform;
}
.page.off-right { transform: translateX(100%); }
.page.off-left { transform: translateX(-100%); }

/* ---- 顶部栏 ---- */
.header {
  display: flex; align-items: center;
  background: linear-gradient(135deg, #1e3c72, #2a5299);
  color: #fff; padding: 12px 12px;
  padding-top: calc(12px + env(safe-area-inset-top));
  gap: 8px;
}
.header-left { display: flex; align-items: center; gap: 8px; flex: 1; }
.header h2 { font-size: 17px; font-weight: 600; white-space: nowrap; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: default;
  padding: 4px 8px;
  border-radius: 6px;
}
.chat-title {
  flex: 1; text-align: center; font-size: 16px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.header-right { display: flex; gap: 2px; }

.icon-btn {
  background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
}
.icon-btn:active { background: rgba(255,255,255,0.15); }
.icon-btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
#files-panel .icon-btn, .files-panel-header .icon-btn { color: #555; }
#files-panel .icon-btn:active { background: #eee; }

.version {
    text-align: center;
    font-size: 12px;
    color: #aaa;
    margin-top: 16px;
}

/* ---- 模型池条 ---- */
.model-strip {
  display: flex; gap: 6px; padding: 8px 12px 0;
  flex-wrap: wrap;
}
.model-chip {
  font-size: 11px; padding: 3px 8px; border-radius: 10px;
  background: #e3f2e6; color: #217a34;
}
.model-chip.busy { background: #fdecea; color: #b3382c; }

/* ---- 会话列表 ---- */
.session-list { flex: 1; overflow-y: auto; padding: 10px 12px calc(16px + env(safe-area-inset-bottom)); }
.session-card {
  background: #fff; border-radius: 12px; padding: 12px 14px; margin-bottom: 10px;
  box-shadow: 0 1px 4px rgba(30,40,90,0.06);
  display: flex; align-items: center; gap: 10px; cursor: pointer;
}
.session-card:active { background: #f7f8fb; }
.session-main { flex: 1; overflow: hidden; }
.session-name { font-weight: 600; font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-meta { font-size: 12px; color: #888; margin-top: 3px; display: flex; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 11px; padding: 1px 7px; border-radius: 8px; white-space: nowrap; }
.badge.active { background: #e3f2e6; color: #217a34; }
.badge.queued { background: #e8eefc; color: #4a5f87; }
.badge.completed { background: #eceff5; color: #5c6674; }
.badge.held { background: #fff4dc; color: #a06a00; }
.badge.cancelled { background: #fdecea; color: #b3382c; }
.session-del { color: #c33; background: none; border: none; font-size: 12px; padding: 6px; }

/* ---- 任务状态栏 ---- */
.phase-bar {
  display: flex; align-items: center;
  padding: 8px 12px; background: #fff; border-bottom: 1px solid #e8e8ee;
}
/* 会话窗口顶部状态栏随状态染色：执行中=绿底、保持中=黄底，一眼区分 */
.phase-bar.active { background: #f0f9f2; border-bottom-color: #cde8d3; }
.phase-bar.held { background: #fffbe8; border-bottom-color: #f5e3b3; }
/* 状态胶囊：带圆点，按状态配色（活跃=绿、保持=黄、排队=蓝灰、终止=红） */
.status-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; padding: 3px 10px; border-radius: 10px;
  background: #eceff5; color: #5c6674;
}
.status-pill::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: currentColor; flex-shrink: 0;
}
.status-pill.active { background: #e3f2e6; color: #1c7a2e; }
.status-pill.active::before { animation: pill-pulse 1.2s ease-in-out infinite; }
.status-pill.held { background: #fff4dc; color: #8a6400; }
.status-pill.queued { background: #e8eefc; color: #4a5f87; }
.status-pill.cancelled { background: #fdecea; color: #b3382c; }
@keyframes pill-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.stop-link {
  background: none; border: none; cursor: pointer;
  color: #c33; font-size: 12px; padding: 2px 6px; margin-left: 2px;
}
.stop-link.muted { color: #8a6400; }
.stop-link:active { opacity: 0.6; }

/* ---- 消息 ---- */
.messages {
  flex: 1; overflow-y: auto; padding: 12px 12px 8px;
  display: flex; flex-direction: column; gap: 10px;
  scroll-behavior: smooth;
}
.msg { display: flex; flex-direction: column; max-width: 86%; }
.msg.me { align-self: flex-end; align-items: flex-end; }
.msg.other { align-self: flex-start; align-items: flex-start; }
.msg-user { font-size: 11px; color: #98a; margin-bottom: 3px; display: flex; gap: 6px; align-items: center; }
.ai-avatar {
  width: 18px; height: 18px; border-radius: 50%;
  background: linear-gradient(135deg, #2a5299, #4d7fd6);
  display: inline-block;
}
.ai-avatar.gray { background: #b9bec9; filter: grayscale(); }
.msg-bubble {
  padding: 9px 12px; border-radius: 12px; line-height: 1.55;
  word-break: break-word; overflow-wrap: break-word; font-size: 14.5px;
  background: #fff; box-shadow: 0 1px 3px rgba(30,40,90,0.07);
}
.msg.me .msg-bubble { background: #d7e7ff; border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.other .msg-bubble { border-bottom-left-radius: 4px; }
.msg-bubble pre {
  background: #f0f2f6; padding: 8px 10px; border-radius: 8px;
  overflow-x: auto; font-size: 12.5px; margin: 6px 0;
}
.msg-bubble code { background: #f0f2f6; padding: 1px 4px; border-radius: 4px; font-size: 12.5px; }
.msg-bubble pre code { background: none; padding: 0; }
.msg-bubble img { max-width: 100%; border-radius: 8px; }
.msg-bubble table { border-collapse: collapse; margin: 6px 0; display: block; overflow-x: auto; }
.msg-bubble th, .msg-bubble td { border: 1px solid #dde; padding: 4px 8px; font-size: 13px; }
.msg-bubble blockquote { border-left: 3px solid #ccd; padding-left: 8px; color: #667; margin: 4px 0; }
.msg-bubble.pending-bubble { color: #889; }
.pending-dots { display: inline-flex; gap: 3px; margin-left: 6px; vertical-align: middle; }
.pending-dots i {
  width: 4px; height: 4px; border-radius: 50%; background: #9ab;
  display: inline-block; animation: blink 1.2s infinite;
}
.pending-dots i:nth-child(2) { animation-delay: 0.2s; }
.pending-dots i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 60%, 100% { opacity: 0.25; } 30% { opacity: 1; } }
.pending-timer { margin-left: 8px; font-size: 11px; color: #aab; font-variant-numeric: tabular-nums; }
.msg-bubble ul, .msg-bubble ol { padding-left: 1.5em; margin: 6px 0; }
.msg-bubble li { margin: 2px 0; }
.msg-time { font-size: 10px; color: #aab; margin-top: 3px; }

/* 工具卡片 */
.tool-card {
  align-self: stretch; max-width: 100%;
  background: #fbf7ee; border: 1px solid #eadfc4; border-radius: 10px;
  padding: 8px 12px; font-size: 13px; color: #6b5b2a;
}
.tool-card .tool-name { font-weight: 600; }
.tool-card summary { cursor: pointer; list-style: none; display: flex; gap: 8px; align-items: center; }
.tool-card summary::-webkit-details-marker { display: none; }
.tool-card .tool-args { color: #8a763b; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; font-size: 12px; }
.tool-card pre {
  background: #f6f1e3; padding: 8px; border-radius: 8px; margin-top: 6px;
  white-space: pre-wrap; overflow-x: auto; max-height: 300px; overflow-y: auto;
  font-size: 12px; color: #55492a;
}
.tool-card.error { background: #fdecea; border-color: #f2c4bd; color: #a3352a; }
.tool-card .spin { display: inline-block; width: 1em; text-align: center; }
.tool-card .tool-args-full { color: #6b5b2a; }

/* ---- 文件面板 ---- */
.files-panel {
  position: absolute; left: 0; right: 0; bottom: 0;
  max-height: 55%; background: #fff; border-radius: 16px 16px 0;
  box-shadow: 0 -4px 20px rgba(20,30,70,0.15); z-index: 9;
  display: flex; flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom);
}
.files-panel-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; font-weight: 600; border-bottom: 1px solid #eee;
}
.files-list { overflow-y: auto; padding: 6px 8px; }
.file-row {
  display: flex; align-items: center; gap: 8px; padding: 8px 8px;
  border-radius: 8px; font-size: 13.5px;
}
.file-row:active { background: #f4f5f9; }
.file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { color: #99a; font-size: 12px; }
.file-act { color: #2a5299; text-decoration: none; font-size: 13px; padding: 2px 6px; background: none; border: none; cursor: pointer; }
.file-act.del { color: #c33; }
.empty-tip { color: #99a; text-align: center; padding: 18px; font-size: 13px; }

/* ---- 输入区 ---- */
.input-area {
  display: flex; align-items: flex-end; gap: 8px;
  padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  background: #fff; border-top: 1px solid #e8e8ee;
}
.input-area textarea {
  flex: 1; resize: none; border: none; outline: none;
  background: #f2f3f7; border-radius: 18px; padding: 9px 14px;
  font-size: 15px; line-height: 1.4; max-height: 120px;
  font-family: inherit;
}
.file-upload-btn {
  width: 38px; height: 38px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: #667; cursor: pointer; flex-shrink: 0;
}
.file-upload-btn:active { background: #eee; }
.file-upload-btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.send-btn {
  width: 38px; height: 38px; border-radius: 50%; border: none; cursor: pointer;
  background: linear-gradient(135deg, #2a5299, #4d7fd6);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.send-btn:active { opacity: 0.8; }
.send-btn svg { width: 18px; height: 18px; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---- 弹窗 ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(20,25,50,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal {
  background: #fff; border-radius: 14px; padding: 20px; width: 84%; max-width: 360px;
  position: relative;
}
.modal h3 { margin-bottom: 12px; font-size: 16px; }
.modal input {
  width: 1; border: 1px solid #dde; border-radius: 8px;
  padding: 10px 12px; font-size: 15px; margin-bottom: 10px; outline: none;
}
.modal input:focus { border-color: #2a5299; }
.modal select {
  width: 100%; border: 1px solid #dde; border-radius: 8px;
  padding: 10px 12px; font-size: 15px; margin-bottom: 10px; outline: none;
  background: #fff; color: #334; appearance: none;
}
.modal select:focus { border-color: #2a5299; }
.modal-close-btn {
  position: absolute; right: 10px; top: 10px;
  background: none; border: none; cursor: pointer; color: #99a;
  width: 28px; height: 28px;
}
.modal-close-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }
.primary-btn {
  width: 1; background: linear-gradient(135deg, #1e3c72, #2a5299);
  color: #fff; border: none; border-radius: 10px; padding: 11px;
  font-size: 15px; font-weight: 600; cursor: pointer;
}
.primary-btn:active { opacity: 0.9; }
.ghost-btn {
  flex: 1; background: #f2f3f7; color: #445; border: 1px solid #dde;
  border-radius: 10px; padding: 11px; font-size: 15px; cursor: pointer;
}
.ghost-btn:active { background: #e8eaf0; }
.btn-row { display: flex; gap: 10px; }
.btn-row .primary-btn { flex: 1; }
.modal .modal-text { font-size: 14px; color: #556; margin-bottom: 12px; }
.modal .del-dir {
  display: flex; align-items: center; gap: 7px;
  font-size: 14px; color: #334; margin-bottom: 14px; cursor: pointer;
}
.modal .del-dir input {
  width: 16px; height: 16px; padding: 0; margin: 0; flex-shrink: 0;
  accent-color: #c33;
}

/* ---- Toast ---- */
.toast {
  position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%);
  background: rgba(20,25,45,0.85); color: #fff;
  padding: 9px 16px; border-radius: 20px; font-size: 13.5px; z-index: 200;
  max-width: 80%; text-align: center;
}

/* ================= 2.0:底部导航 + Tab 页 ================= */
.tabbar {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 50;
  display: flex; background: #fff; border-top: 1px solid #e8e8ee;
  height: calc(56px + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
}
.tab-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; padding-top: 6px;
  color: #8a93a6; text-decoration: none; font-size: 11px;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.tab-item svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tab-item.active { color: #2a5299; font-weight: 600; }
.tab-item:active { opacity: 0.7; }

/* Tab 内容页:占满除底部导航外的区域(导航隐藏时被聊天页盖住,无影响) */
.tab-page {
  position: absolute; top: 0; left: 0; right: 0;
  bottom: calc(56px + env(safe-area-inset-bottom));
  display: flex; flex-direction: column; background: #f2f3f7;
}
.tab-body-area { flex: 1; overflow-y: auto; padding: 10px 12px 16px; }

/* 聊天详情为全屏覆盖页,需盖住底部导航 */
#chat-page { z-index: 60; }

/* ---- 模型占位卡片(阶段 4 会扩展为用量/费用卡) ---- */
.model-card {
  background: #fff; border-radius: 12px; padding: 12px 14px; margin-bottom: 10px;
  box-shadow: 0 1px 4px rgba(30,40,90,0.06);
}
.model-card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.model-card-name { font-weight: 600; font-size: 15px; }
.model-card-state { font-size: 11px; padding: 2px 8px; border-radius: 9px; }
.model-card-state.idle { background: #e3f2e6; color: #217a34; }
.model-card-state.busy { background: #fdecea; color: #b3382c; }
.model-card-meta { font-size: 12px; color: #888; margin-top: 4px; }

/* ---- 设置页行 ---- */
.settings-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: #fff; border-radius: 12px; padding: 12px 14px; margin-bottom: 10px;
  box-shadow: 0 1px 4px rgba(30,40,90,0.06); font-size: 14px;
}
.ghost-btn.small { flex: none; padding: 6px 12px; font-size: 13px; border-radius: 8px; }

/* ---- 技能页(阶段 3) ---- */
.skill-desc {
  font-size: 12px; color: #888; margin-top: 3px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
/* 代码/配置编辑器:全屏覆盖所在 Tab(盖住列表/详情与顶栏,不遮底部导航) */
#skill-editor, #cfg-editor {
  position: absolute; inset: 0; z-index: 6; background: #f2f3f7;
  display: flex; flex-direction: column;
}
#skill-editor-area, #cfg-editor-area {
  flex: 1; margin: 10px 12px 12px; resize: none; outline: none;
  border: 1px solid #dde; border-radius: 10px; background: #fff; color: #223;
  padding: 10px 12px; font-size: 12.5px; line-height: 1.55; tab-size: 4;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  white-space: pre; overflow: auto;
}

/* ---- 设置页(阶段 5) ---- */
.settings-card {
  background: #fff; border-radius: 12px; padding: 10px 14px 12px; margin-bottom: 12px;
  box-shadow: 0 1px 4px rgba(30,40,90,0.06);
}
.settings-card h4 { font-size: 14px; color: #334; margin: 4px 0 2px; display: flex; align-items: center; gap: 8px; }
.cfg-kv {
  display: flex; align-items: baseline; gap: 10px;
  font-size: 13px; padding: 7px 0; border-bottom: 1px dashed #eef0f5;
}
.cfg-kv:last-of-type { border-bottom: none; }
.cfg-kv label { color: #889; flex: none; max-width: 42%; }
.cfg-kv b {
  font-weight: 500; flex: 1; text-align: right; color: #223;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.cfg-note { font-size: 11.5px; color: #99a; line-height: 1.5; margin-top: 6px; }
/* 原文编辑器保存前的校验错误条 */
.cfg-err {
  margin: 8px 12px 0; padding: 8px 12px; border-radius: 8px;
  background: #fdecea; color: #a3352a; font-size: 12.5px;
  white-space: pre-wrap; word-break: break-all;
}