/* =========================================================
   客服任务目标 - 浅色简洁风
   ========================================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1f2329;
  --text-sec: #5c6b7a;
  --border: #e4e7ed;
  --primary: #3370ff;
  --primary-light: #e8f0ff;
  --green: #00b578;
  --green-light: #e6f8f1;
  --orange: #ff8800;
  --orange-light: #fff3e6;
  --red: #f53f3f;
  --red-light: #ffecec;
}

html, body { height: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  padding: 20px 28px 30px;
}

/* ---------- 顶部标题栏 ---------- */
.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1440px;
  margin: 0 auto 20px;
  gap: 20px;
  flex-wrap: wrap;
}
.header-title h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
}
.header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}
.header-date {
  font-size: 13px;
  color: var(--text-sec);
}

/* ---------- 日期筛选 ---------- */
.date-filter {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.date-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-sec);
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}
.date-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
}
.date-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.date-btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.date-btn-primary:hover {
  background: #2a60e0;
  color: #fff;
  border-color: #2a60e0;
}
.date-sep {
  color: var(--border);
  margin: 0 4px;
}
.date-tilde {
  color: var(--text-sec);
  font-size: 13px;
  margin: 0 2px;
}
.date-input {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 13px;
  color: var(--text);
  background: #fff;
  font-family: inherit;
  outline: none;
  transition: border-color .15s;
}
.date-input:focus {
  border-color: var(--primary);
}
.date-input::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: .6;
}
.date-input::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

/* ---------- 主体 ---------- */
.main {
  max-width: 1440px;
  margin: 0 auto;
}

/* ---------- KPI 卡片 ---------- */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.kpi-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.kpi-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: var(--primary-light);
}
.kpi-icon svg { width: 26px; height: 26px; }
.kpi-icon-blue { color: var(--green); background: var(--green-light); }
.kpi-icon-orange { color: var(--orange); background: var(--orange-light); }
.kpi-icon-red { color: var(--red); background: var(--red-light); }
.kpi-main { flex: 1; }
.kpi-label {
  font-size: 14px;
  color: var(--text-sec);
  margin-bottom: 6px;
}
.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  font-family: "DIN Alternate", "Segoe UI", Arial, sans-serif;
}
.kpi-value .unit {
  font-size: 16px;
  font-weight: 500;
  margin-left: 2px;
  color: var(--text-sec);
}

/* ---------- 面板通用 ---------- */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.panel-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.panel-body { padding: 16px 20px; }

/* ---------- 图表区 ---------- */
.chart-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
.chart-panel .panel-body { height: 340px; }

/* ---------- 表格 ---------- */
.table-panel { margin-bottom: 18px; }
.table-wrap { padding: 10px 20px 18px; overflow-x: auto; }
.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 1080px;
}
.detail-table th {
  color: var(--text-sec);
  font-weight: 500;
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  background: #fafbfc;
  white-space: nowrap;
}
.detail-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  color: var(--text);
}
.detail-table tbody tr { transition: background .15s; }
.detail-table tbody tr:hover { background: #f8f9fb; }
.detail-table tbody tr:last-child td { border-bottom: none; }
.detail-table .num { font-family: "DIN Alternate", "Segoe UI", Arial, sans-serif; }
.detail-table .rate-high { color: var(--green); }
.detail-table .rate-mid { color: var(--orange); }
.detail-table .rate-low { color: var(--red); }
.detail-table .neg { color: var(--red); }
.kpi-value .neg { color: var(--red); }

.btn-view {
  color: var(--primary);
  font-size: 13px;
  cursor: pointer;
}
.btn-view:hover { text-decoration: underline; }

.empty-tip { text-align: center; color: var(--text-sec); padding: 40px 0; font-size: 14px; }

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, 0.45);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 760px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
  font-size: 24px; color: var(--text-sec); cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text); }
.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}
.loading-tip { text-align: center; color: var(--text-sec); padding: 30px 0; }
.session-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
}
.session-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 14px;
  background: #f8f9fb;
  cursor: pointer;
  font-size: 13px;
}
.session-header:hover { background: #f1f3f6; }
.session-header .customer { font-weight: 500; }
.session-header .meta { color: var(--text-sec); }
.session-messages {
  display: none;
  padding: 10px 14px;
  background: #fff;
}
.session-messages.open { display: block; }
.msg-row {
  display: flex; gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed #f0f0f0;
  font-size: 13px;
}
.msg-row:last-child { border-bottom: none; }
.msg-time { color: var(--text-sec); white-space: nowrap; width: 130px; }
.msg-origin {
  width: 48px; text-align: center;
  padding: 1px 6px; border-radius: 4px;
  font-size: 12px;
}
.msg-origin.customer { color: #3370ff; background: #e8f0ff; }
.msg-origin.staff { color: #00b578; background: #e6f8f1; }
.msg-text { flex: 1; word-break: break-all; color: var(--text); }

/* ---------- 底部 ---------- */
.footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-sec);
  padding: 8px 0 2px;
}

/* ---------- 加载遮罩 ---------- */
.loading-overlay {
  position: fixed; inset: 0; z-index: 99;
  background: rgba(255, 255, 255, 0.75);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 14px;
}
.spinner {
  width: 38px; height: 38px;
  border: 3px solid rgba(51, 112, 255, 0.25);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay span { color: var(--text-sec); font-size: 13px; }

@media (max-width: 900px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .chart-row { grid-template-columns: 1fr; }
}