:root {
  --accent: #ff84a9;
  --accent-strong: #f4628c;
  --accent-gradient: linear-gradient(135deg, #ff84a9 0%, #ffa06a 100%);
  --accent-contrast: #ffffff;
  --bg: #fdf7f9;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --surface-soft: #fdeef3;
  --border: #f5e3ea;
  --text: #505050;
  --text-soft: #7d7d7d;
  --text-faint: #b8aab0;
  --danger: #f47c7c;
  --danger-soft: rgba(244, 124, 124, 0.12);
  --success: #6ec79e;
  --warning: #f6c177;
  --shadow: 0 1px 30px -4px #e8d5dd;
  --shadow-hover: 0 1px 24px 6px #ecd9e1;
  --card-border: 1.5px solid #ffffff;
  --radius-xl: 14px;
  --radius-lg: 10px;
  --radius-md: 8px;
  --transition: all 0.3s cubic-bezier(0.07, 0.53, 0.65, 0.95);
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  padding: 24px 18px;
  box-sizing: border-box;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", -apple-system, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

button,
input,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

.shell {
  max-width: 1280px;
  height: 100%;
  min-height: 0;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.surface {
  background: var(--surface);
  border: var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: saturate(160%) blur(8px);
  padding: 16px 18px;
}

/* ---------- 顶部标题 ---------- */
.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.hero h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 6px 0 0;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.source-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--surface-soft);
  border-radius: 30px;
}

.source-switch button {
  border: 0;
  background: transparent;
  border-radius: 24px;
  padding: 7px 18px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-soft);
  transition: var(--transition);
}

.source-switch button.is-active {
  background: var(--accent-gradient);
  color: var(--accent-contrast);
  box-shadow: 0 4px 12px -4px var(--accent);
}

/* ---------- 顶部状态栏 ---------- */
.statusbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 18px;
  flex-wrap: wrap;
}
.statusbar .status-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.statusbar .status-text {
  margin: 0;
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.statusbar .stat-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-faint);
}
.statusbar .stat-strip b {
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 0.92rem;
  margin-left: 4px;
}
.statusbar .spacer {
  flex: 1 1 auto;
}
.statusbar .btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.panel-title {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--surface-soft);
  color: var(--text-soft);
}

.badge[data-tone="success"] {
  background: rgba(110, 199, 158, 0.18);
  color: #2f8a63;
}
.badge[data-tone="warning"] {
  background: rgba(246, 193, 119, 0.2);
  color: #b07d28;
}
.badge[data-tone="danger"] {
  background: var(--danger-soft);
  color: #c0504f;
}

.status-text {
  margin: 0 0 10px;
  font-size: 0.85rem;
  color: var(--text-soft);
  word-break: break-all;
}

.meta-line {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.meta-line b {
  color: var(--text-soft);
  font-weight: 600;
}

.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

button.primary,
button.secondary,
button.danger {
  border-radius: var(--radius-md);
  padding: 9px 14px;
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

button.primary {
  background: var(--accent-gradient);
  color: var(--accent-contrast);
  box-shadow: 0 6px 16px -8px var(--accent);
}
button.primary:hover:not(:disabled) {
  filter: brightness(1.04);
}

button.secondary {
  background: var(--surface-strong);
  border-color: var(--border);
  color: var(--text-soft);
}
button.secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent-strong);
}

button.danger {
  background: var(--surface-strong);
  border-color: color-mix(in srgb, var(--danger), transparent 60%);
  color: var(--danger);
}
button.danger:hover:not(:disabled) {
  background: var(--danger);
  color: #fff;
}
button.danger.solid {
  background: var(--danger);
  color: #fff;
  border-color: transparent;
}

button.small {
  padding: 6px 12px;
  font-size: 0.8rem;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-soft);
}

input[type="search"],
input[type="text"],
select {
  width: 100%;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-strong);
  font-size: 0.85rem;
  transition: var(--transition);
}
input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent), transparent 80%);
}

/* ---------- 左侧栏内的筛选条 ---------- */
.filter-bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.filter-bar .span-2 {
  grid-column: 1 / -1;
}
.filter-bar .field {
  gap: 3px;
  font-size: 0.74rem;
}
.filter-bar input[type="search"],
.filter-bar input[type="text"],
.filter-bar select {
  padding: 6px 9px;
  font-size: 0.82rem;
}

/* ---------- 双栏工作区 ---------- */
.workspace {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.55fr);
  gap: 14px;
  align-items: stretch;
}

/* 左列: 会话列表 + 详情 两个独立块上下排列, 一起撑满列高 */
.left-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
}
.list-card {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.detail-card {
  flex: 0 0 auto;
}

/* 右列: 完整对话块撑满列高 */
.conversation-card {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.section-head h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}
.section-head .caption {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin: 2px 0 0;
}
.head-actions {
  display: flex;
  gap: 8px;
}

/* 会话列表 */
.list-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
}

.session-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  padding: 10px 12px;
  transition: var(--transition);
}
.session-item.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent), transparent 78%);
}
.session-item:hover {
  border-color: color-mix(in srgb, var(--accent), transparent 50%);
}

.session-check {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  flex: none;
}

.session-main {
  flex: 1;
  min-width: 0;
  text-align: left;
  background: none;
  border: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.session-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.session-title {
  font-weight: 600;
  font-size: 0.88rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.session-size {
  font-size: 0.74rem;
  color: var(--text-faint);
  flex: none;
}
.session-sub {
  display: flex;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--text-faint);
}
.session-summary {
  font-size: 0.78rem;
  color: var(--text-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* 详情 */
.detail-overview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 0 0 14px;
}
.detail-overview div {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  padding: 7px 10px;
  min-width: 0;
}
.detail-overview dt {
  font-size: 0.72rem;
  color: var(--text-faint);
}
.detail-overview dd {
  margin: 2px 0 0;
  font-size: 0.82rem;
  word-break: break-all;
}

.conversation-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.conversation-head h3 {
  margin: 0;
  font-size: 0.9rem;
}
.chip-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-left: auto;
}
.chip {
  border: 1px solid var(--border);
  background: var(--surface-strong);
  border-radius: 20px;
  padding: 3px 11px;
  font-size: 0.76rem;
  color: var(--text-soft);
  transition: var(--transition);
}
.chip.is-active {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
}

.conversation-stream {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
}

.conversation-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 12px;
  background: var(--surface-strong);
}
.conversation-item.user {
  background: var(--surface-soft);
}
.conversation-item.system {
  background: #fbfbfc;
}
.conversation-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.conversation-role {
  font-weight: 600;
  color: var(--accent-strong);
}
.conversation-item.system .conversation-role {
  color: var(--text-soft);
}
.conversation-body {
  font-size: 0.84rem;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.55;
}

.empty-state {
  margin: 0;
  padding: 24px 8px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.85rem;
}
.list-more-hint {
  margin: 4px 0 2px;
  padding: 8px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.78rem;
}

.support-hint {
  color: var(--danger);
  font-size: 0.82rem;
  margin: 6px 0 0;
}

/* 滚动条 */
.list-scroll::-webkit-scrollbar,
.conversation-stream::-webkit-scrollbar {
  width: 8px;
}
.list-scroll::-webkit-scrollbar-thumb,
.conversation-stream::-webkit-scrollbar-thumb {
  background: #e8cdd8;
  border-radius: 8px;
}

/* 弹窗 */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}
.modal[hidden] {
  display: none;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(60, 40, 50, 0.32);
  backdrop-filter: blur(2px);
}
.modal-card {
  position: relative;
  width: min(440px, calc(100vw - 32px));
  background: var(--surface-strong);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px -20px rgba(120, 60, 90, 0.45);
  padding: 22px;
}
.modal-card h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}
.modal-desc {
  margin: 0 0 12px;
  font-size: 0.88rem;
  color: var(--text-soft);
}
.modal-warning {
  background: var(--danger-soft);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-size: 0.8rem;
  color: #b34a4a;
  margin-bottom: 16px;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 1080px) {
  body {
    height: auto;
    min-height: 100vh;
    overflow: auto;
  }
  .shell {
    height: auto;
    min-height: calc(100vh - 48px);
  }
  .workspace {
    display: flex;
    flex-direction: column;
  }
  .list-scroll {
    max-height: 40vh;
  }
  .conversation-stream {
    max-height: 60vh;
  }
}
@media (max-width: 560px) {
  body {
    padding: 14px 10px;
  }
  .filter-bar,
  .detail-overview {
    grid-template-columns: 1fr;
  }
  .statusbar .status-text {
    max-width: 180px;
  }
}