/* 止水 —— 优美 · 清晰 · 精简 */

:root {
  color-scheme: light;  /* 让浏览器窗口框与滚动条随主题走 */
  --paper: #f3f5f2;
  --panel: #fbfcfa;
  --panel-2: #ecefeb;
  --ink: #262b29;
  --ink-2: #5c6663;
  --ink-3: #96a09b;
  --line: #dce2dd;
  --celadon: #6e9987;
  --zhu: #ae3d2c;
  --mist: #b9c4be;
  --shadow: 0 1px 3px rgba(38, 43, 41, .06), 0 4px 16px rgba(38, 43, 41, .05);
  --font-display: "KaiTi", "STKaiti", "DFKai-SB", serif;
  --font-body: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-mono: Consolas, "Courier New", monospace;
}

[data-theme="dark"] {
  color-scheme: dark;
  --paper: #191c1b;
  --panel: #202422;
  --panel-2: #262b28;
  --ink: #d6dad6;
  --ink-2: #9aa39e;
  --ink-3: #626b66;
  --line: #2e3431;
  --celadon: #7fae9a;
  --zhu: #c65441;
  --mist: #4a5450;
  --shadow: 0 1px 3px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

input,
select {
  font-family: inherit;
  font-size: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* ---------- 顶栏 ---------- */

#topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 2px;
}

.brand-sub {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 4px;
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

#searchInput {
  flex: 0 1 320px;
}

.scopes {
  display: flex;
  gap: 4px;
}

.scope-chip {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  transition: all .15s;
}

.scope-chip[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--celadon);
  background: color-mix(in srgb, var(--celadon) 12%, transparent);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 刻漏 */
.ring-wrap {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 10px 3px 4px;
  border-radius: 20px;
  cursor: default;
}

.ring-wrap svg {
  display: block;
}

.ring-track {
  stroke: var(--line);
  fill: none;
}

.ring-arc {
  stroke: var(--celadon);
  fill: none;
  stroke-linecap: round;
  transition: stroke .3s;
}

.ring-wrap.overdue .ring-arc {
  stroke: var(--zhu);
}

.ring-label {
  font-size: 12px;
  color: var(--ink-2);
  font-family: var(--font-mono);
}

.ring-wrap.overdue .ring-label {
  color: var(--zhu);
}

.icon-btn {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--ink-2);
  font-size: 15px;
}

.icon-btn:hover {
  background: var(--panel-2);
  color: var(--ink);
}

/* ---------- 布局 ---------- */

#layout {
  display: flex;
  flex: 1;
  min-height: 0;
}

#sidebar {
  width: 200px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 14px 10px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--ink-2);
  text-align: left;
  margin-bottom: 1px;
}

.nav-item:hover {
  background: var(--panel-2);
}

.nav-item.active {
  background: var(--panel-2);
  color: var(--ink);
  font-weight: 600;
}

.nav-item .count {
  font-size: 11px;
  color: var(--ink-3);
  font-family: var(--font-mono);
}

.nav-sep {
  border: none;
  border-top: 1px solid var(--line);
  margin: 12px 8px;
}

#main {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
}

/* ---------- 会话清单 ---------- */

.list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px 6px;
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 2;
}

.view-title {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 1px;
}

.legend {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--ink-3);
}

.legend span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.session-list {
  padding: 4px 24px 40px;
  max-width: 860px;
}

.card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .12s, border-color .12s;
}

.card:hover {
  background: var(--panel);
  border-color: var(--line);
}

.card.selected {
  background: color-mix(in srgb, var(--celadon) 8%, var(--panel));
  border-color: var(--celadon);
}

.card input[type="checkbox"] {
  opacity: 0;
  width: 14px;
  height: 14px;
  accent-color: var(--celadon);
  flex-shrink: 0;
}

.card:hover input[type="checkbox"],
.card.selected input[type="checkbox"],
.card input[type="checkbox"]:checked {
  opacity: 1;
}

/* 对账状态点 */
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot.same {
  background: var(--celadon);
}

.dot.native_newer {
  background: var(--zhu);
}

.dot.native_only {
  background: none;
  border: 1.5px solid var(--ink-3);
}

.dot.archive_only {
  background: var(--mist);
}

.dot.archive_newer {
  background: none;
  border: 1.5px solid var(--zhu);
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.card-meta {
  font-size: 11.5px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  display: flex;
  gap: 10px;
}

.badge-fork {
  color: var(--ink-3);
  font-size: 12px;
}

.seal {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--zhu);
  border: 1px solid var(--zhu);
  border-radius: 3px;
  padding: 0 3px;
  line-height: 15px;
  flex-shrink: 0;
  opacity: .85;
}

.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-3);
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 2px;
}

/* 搜索结果 */
.result-snips {
  margin-top: 6px;
  display: grid;
  gap: 3px;
}

.snip {
  font-size: 12.5px;
  color: var(--ink-2);
  display: flex;
  gap: 8px;
}

.snip .role {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 5px;
  height: 18px;
  line-height: 16px;
}

.snip mark {
  background: color-mix(in srgb, var(--celadon) 30%, transparent);
  color: inherit;
  border-radius: 2px;
}

/* ---------- 阅读视图 ---------- */

.reader {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 28px 80px;
}

.reader-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.back-btn {
  color: var(--ink-3);
  font-size: 18px;
  padding: 4px 8px;
  border-radius: 6px;
}

.back-btn:hover {
  background: var(--panel-2);
  color: var(--ink);
}

.reader-title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 1px;
  flex: 1;
  min-width: 0;
  cursor: text;
  border-radius: 6px;
  padding: 2px 6px;
}

.reader-title:hover {
  background: var(--panel-2);
}

.reader-title-input {
  font-family: var(--font-display);
  font-size: 20px;
  flex: 1;
}

.reader-meta {
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  padding-left: 44px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.reader-meta .fork-link {
  color: var(--celadon);
  cursor: pointer;
}

.reader-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 12px 0 18px 44px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}

.act-btn {
  font-size: 12.5px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--ink-2);
  transition: all .15s;
}

.act-btn:hover {
  border-color: var(--ink-3);
  color: var(--ink);
}

.act-btn[aria-pressed="true"] {
  border-color: var(--celadon);
  color: var(--ink);
  background: color-mix(in srgb, var(--celadon) 12%, transparent);
}

.act-btn.danger:hover {
  border-color: var(--zhu);
  color: var(--zhu);
}

/* 消息流 */
.msg {
  margin-bottom: 20px;
}

.msg-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 5px;
}

.msg-who {
  font-weight: 600;
  font-size: 13.5px;
}

.msg.user .msg-who {
  color: var(--celadon);
}

.msg-time {
  font-size: 11px;
  color: var(--ink-3);
  font-family: var(--font-mono);
}

.msg-text {
  white-space: pre-wrap;
  overflow-wrap: break-word;
  line-height: 1.75;
  font-size: 13.5px;
}

/* 就地装点式 Markdown */
.msg-text code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--panel-2);
  border-radius: 4px;
  padding: 1px 5px;
}

.md-h {
  font-weight: 700;
}

.md-h1,
.md-h2 {
  font-size: 15.5px;
  font-family: var(--font-display);
  letter-spacing: 1px;
}

.md-h3,
.md-h4 {
  font-size: 14px;
}

.md-code,
.md-tbl {
  display: inline-block;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  background: var(--panel-2);
  padding: 0 8px;
}

.md-q {
  color: var(--ink-2);
  border-left: 2px solid var(--line);
  padding-left: 10px;
  display: inline-block;
}

.md-hr {
  display: inline-block;
  width: 100%;
  border-top: 1px solid var(--line);
  vertical-align: middle;
}

.msg.user .msg-text {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
}

/* 思考折叠块 */
.think {
  margin: 8px 0;
}

.think-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  text-align: left;
  font-size: 12px;
  color: var(--ink-3);
  padding: 3px 6px;
  border-radius: 6px;
}

.think-toggle:hover {
  background: var(--panel-2);
  color: var(--ink-2);
}

.think-preview {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-style: italic;
  opacity: .7;
}

.think-body {
  margin: 4px 0 4px 14px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  color: var(--ink-2);
  font-size: 12.5px;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.tools-line {
  font-size: 11.5px;
  color: var(--ink-3);
  margin: 6px 0;
}

/* 协作痕迹 */
.annot {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--ink-3);
  margin: 14px 0;
  letter-spacing: 1px;
}

/* 别枝 */
.discard-toggle {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
  padding: 14px 0 6px;
  margin-top: 30px;
  border-top: 1px dashed var(--line);
  letter-spacing: 1px;
}

.discard-toggle:hover {
  color: var(--ink-2);
}

.discard-zone {
  opacity: .65;
  margin-top: 14px;
}

.discard-zone .msg-who {
  color: var(--ink-3) !important;
}

/* ---------- 删洗 ---------- */

.cleanup {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 28px 80px;
}

.cleanup h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

.panel h3 {
  font-size: 14px;
  margin-bottom: 4px;
}

.panel .hint {
  font-size: 12.5px;
  color: var(--ink-3);
  margin-bottom: 12px;
  line-height: 1.6;
}

.panel-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.panel-row input[type="number"] {
  width: 68px;
}

.btn {
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: all .15s;
}

.btn:hover {
  border-color: var(--ink-3);
}

.btn.primary {
  background: var(--celadon);
  border-color: var(--celadon);
  color: #fff;
}

.btn.primary:hover {
  filter: brightness(1.06);
}

.btn.danger {
  color: var(--zhu);
  border-color: color-mix(in srgb, var(--zhu) 40%, transparent);
}

.btn.danger:hover {
  background: color-mix(in srgb, var(--zhu) 8%, transparent);
  border-color: var(--zhu);
}

/* 墨池列表 */
.trash-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.trash-item:last-child {
  border-bottom: none;
}

.trash-info {
  flex: 1;
  min-width: 0;
}

.trash-reason {
  font-family: var(--font-mono);
  font-size: 12px;
}

.trash-detail {
  font-size: 11.5px;
  color: var(--ink-3);
  margin-top: 1px;
}

/* ---------- 批量操作栏 ---------- */

#batchBar {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 8px 18px;
  box-shadow: var(--shadow);
  z-index: 20;
}

#batchBar[hidden] {
  display: none;
}

#batchBar .count {
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- 设置抽屉 ---------- */

#drawerMask {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 22, .25);
  z-index: 30;
}

#drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 400px;
  max-width: 92vw;
  background: var(--panel);
  border-left: 1px solid var(--line);
  z-index: 31;
  padding: 24px 26px;
  overflow-y: auto;
  box-shadow: var(--shadow);
}

#drawer h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 12.5px;
  color: var(--ink-2);
  margin-bottom: 5px;
}

.field input[type="text"],
.field input[type="number"] {
  width: 100%;
}

.field.inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.field.inline label {
  margin: 0;
}

.field .note {
  font-size: 11.5px;
  color: var(--ink-3);
  margin-top: 4px;
}

/* ---------- 弹窗 ---------- */

#modalMask {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 22, .3);
  display: grid;
  place-items: center;
  z-index: 40;
}

#modalBox {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  width: 560px;
  max-width: 92vw;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

#modalBox header {
  padding: 16px 22px 10px;
  font-size: 15px;
  font-weight: 600;
}

#modalBody {
  padding: 0 22px;
  overflow-y: auto;
  flex: 1;
  font-size: 13px;
  line-height: 1.7;
}

#modalBody .preview-item {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
}

#modalBody .preview-item:last-child {
  border-bottom: none;
}

#modalBody .preview-item .m {
  color: var(--ink-3);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

#modalBox footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 22px 18px;
}

/* ---------- 通知 ---------- */

#toast {
  position: fixed;
  left: 50%;
  bottom: 76px;
  transform: translateX(-50%) translateY(10px);
  background: var(--ink);
  color: var(--paper);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
  max-width: 80vw;
}

#toast.show {
  opacity: .95;
  transform: translateX(-50%) translateY(0);
}

/* 首次启动横幅 */
.banner {
  margin: 12px 24px 0;
  max-width: 812px;
  background: color-mix(in srgb, var(--celadon) 10%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--celadon) 40%, transparent);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.7;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.banner .close {
  margin-left: auto;
  color: var(--ink-3);
  flex-shrink: 0;
}

/* 窄屏 */
@media (max-width: 720px) {
  #sidebar {
    display: none;
  }

  .scopes {
    display: none;
  }

  .reader,
  .cleanup {
    padding-left: 16px;
    padding-right: 16px;
  }
}