/* 坐席台 · 桌面优先（对齐国内在线客服三栏） */
:root {
  --bg: #eef1f6;
  --panel: #fff;
  --line: #e5e8ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0665d0;
  --primary-soft: #e8f1fc;
  --ok: #16a34a;
  --warn: #f59e0b;
  --danger: #e11d48;
  --aside: #0f172a;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; background: var(--bg); color: var(--text); }

.app {
  display: grid;
  grid-template-columns: 72px 280px 1fr 300px;
  height: 100vh;
  min-width: 1100px;
}

/* —— 最左导航 —— */
.rail {
  background: var(--aside);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 8px;
}
.rail .logo {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--primary); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 14px;
  margin-bottom: 12px;
}
.rail button {
  width: 48px; height: 48px; border: 0; border-radius: 12px;
  background: transparent; color: inherit; cursor: pointer; font-size: 11px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
}
.rail button .ico { font-size: 18px; line-height: 1; }
.rail button.active, .rail button:hover { background: rgba(255,255,255,.08); color: #fff; }
.rail .spacer { flex: 1; }

/* —— 访客列表 —— */
.visitors {
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; min-width: 0;
}
.visitors .head {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--line);
}
.visitors .head h1 { margin: 0 0 10px; font-size: 16px; font-weight: 650; }
.tabs { display: flex; gap: 6px; margin-bottom: 10px; }
.tabs button {
  flex: 1; border: 1px solid var(--line); background: #f8fafc; border-radius: 8px;
  padding: 6px 0; font-size: 12px; cursor: pointer; color: var(--muted);
}
.tabs button.active { background: var(--primary-soft); border-color: #bfd6f5; color: var(--primary); font-weight: 600; }
.search {
  width: 100%; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-size: 13px; outline: none;
}
.search:focus { border-color: var(--primary); }
.vlist { flex: 1; overflow: auto; }
.vitem {
  display: grid; grid-template-columns: 40px 1fr auto; gap: 10px;
  padding: 12px 14px; border-bottom: 1px solid #f1f5f9; cursor: pointer;
}
.vitem:hover { background: #f8fafc; }
.vitem.active { background: var(--primary-soft); }
.avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, #93c5fd, #0665d0);
  color: #fff; display: grid; place-items: center; font-size: 14px; font-weight: 600;
}
.vmeta .name { font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.vmeta .preview { font-size: 12px; color: var(--muted); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge {
  font-size: 10px; padding: 1px 6px; border-radius: 999px; background: #fee2e2; color: var(--danger);
}
.badge.wait { background: #ffedd5; color: #c2410c; }
.badge.bot { background: #e0e7ff; color: #3730a3; }
.vtime { font-size: 11px; color: var(--muted); text-align: right; }
.dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  display: inline-block;
}
.dot.off { background: #cbd5e1; }

/* —— 会话区 —— */
.chat {
  display: flex; flex-direction: column; min-width: 0; background: #f7f8fb;
}
.chat-bar {
  height: 56px; background: var(--panel); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; gap: 12px;
}
.chat-bar .who { font-weight: 650; font-size: 15px; }
.chat-bar .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.chat-bar .actions { display: flex; gap: 8px; }
.btn {
  border: 1px solid var(--line); background: #fff; border-radius: 8px;
  padding: 7px 12px; font-size: 12px; cursor: pointer; color: var(--text);
}
.btn:hover { background: #f8fafc; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.danger { color: var(--danger); border-color: #fecdd3; }

.msgs {
  flex: 1; overflow: auto; padding: 18px 20px 10px;
  display: flex; flex-direction: column; gap: 12px;
}
.day { text-align: center; font-size: 11px; color: var(--muted); margin: 4px 0; }
.bubble-row { display: flex; gap: 8px; max-width: 78%; }
.bubble-row.me { align-self: flex-end; flex-direction: row-reverse; }
.bubble {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 12px; font-size: 13px; line-height: 1.5; box-shadow: var(--shadow);
  white-space: pre-wrap; word-break: break-word;
}
.bubble-row.me .bubble { background: var(--primary); border-color: var(--primary); color: #fff; }
.bubble .time { display: block; margin-top: 6px; font-size: 10px; opacity: .65; }
.sys {
  align-self: center; font-size: 12px; color: var(--muted);
  background: #eef2ff; padding: 6px 10px; border-radius: 8px;
}

.composer {
  background: var(--panel); border-top: 1px solid var(--line);
  padding: 10px 14px 14px;
}
.tools { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.tools button {
  border: 0; background: #f1f5f9; border-radius: 6px; padding: 5px 10px;
  font-size: 12px; cursor: pointer; color: var(--muted);
}
.tools button:hover { background: var(--primary-soft); color: var(--primary); }
.composer textarea {
  width: 100%; min-height: 72px; resize: vertical; border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; font-size: 13px; outline: none;
  font-family: inherit;
}
.composer textarea:focus { border-color: var(--primary); }
.composer .row {
  display: flex; justify-content: space-between; align-items: center; margin-top: 8px;
}
.hint { font-size: 11px; color: var(--muted); }

/* —— 右侧资料 —— */
.side {
  background: var(--panel); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; min-width: 0;
}
.side .head {
  padding: 14px 14px 0; font-size: 14px; font-weight: 650;
}
.side-tabs {
  display: flex; gap: 0; padding: 10px 10px 0; border-bottom: 1px solid var(--line);
}
.side-tabs button {
  flex: 1; border: 0; background: transparent; padding: 8px 0 10px;
  font-size: 12px; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent;
}
.side-tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.side-body { padding: 14px; overflow: auto; flex: 1; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 11px; color: var(--muted); margin-bottom: 4px; }
.field .val { font-size: 13px; word-break: break-all; }
.tag {
  display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px;
  background: #f1f5f9; margin: 0 4px 4px 0;
}
.quick { display: flex; flex-direction: column; gap: 6px; }
.quick button {
  text-align: left; border: 1px solid var(--line); background: #fff;
  border-radius: 8px; padding: 8px 10px; font-size: 12px; cursor: pointer;
}
.quick button:hover { border-color: #bfd6f5; background: var(--primary-soft); }

.empty {
  flex: 1; display: grid; place-items: center; color: var(--muted); font-size: 13px;
}

@media (max-width: 1200px) {
  .app { grid-template-columns: 64px 240px 1fr 260px; }
}