:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #1e2429;
  --muted: #6b7480;
  --accent: #0f7a6c;
  --accent-soft: #e6f2f0;
  --danger: #b4432f;
  --warn: #9a6b12;
  --ok: #1f7a3d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); }

header.top {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

header.top h1 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
}

header.top .spacer { flex: 1; }

nav.tabs {
  display: flex;
  gap: 2px;
  padding: 0 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

nav.tabs button {
  border: 0;
  background: transparent;
  padding: 9px 13px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

nav.tabs button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

main { padding: 18px; max-width: 1240px; }

section.panel { display: none; }
section.panel.active { display: block; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
}

.stat .label { font-size: 12px; color: var(--muted); }
.stat .value { font-size: 22px; font-weight: 600; margin-top: 4px; }

.block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 16px;
}

.block > h2 {
  font-size: 13px;
  font-weight: 600;
  margin: 0;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.block > .body { padding: 14px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 500; font-size: 12px; }
tr:last-child td { border-bottom: 0; }
td.mono { font-family: ui-monospace, Consolas, monospace; font-size: 12px; }

input, select, textarea {
  font: inherit;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fff;
  color: var(--text);
  width: 100%;
}

textarea { min-height: 90px; resize: vertical; }

/* 勾选框用浏览器默认宽度，否则会被上面的 width:100% 撞成一条
input[type="checkbox"] { width: auto; margin: 0; }

/* 邮件预览块 */
.pre {
  background: #f7f8fa;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 10px 12px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
}

button.btn {
  font: inherit;
  padding: 6px 12px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  color: var(--text);
}

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

button.btn.danger { color: var(--danger); border-color: #e6c5bd; }
button.btn:hover { filter: brightness(0.97); }
button.btn:disabled { opacity: 0.5; cursor: default; }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }

.pill {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.pill.failed { background: #f7e6e2; color: var(--danger); }
.pill.pending { background: #f6eeda; color: var(--warn); }
.pill.sent { background: #e4f1e8; color: var(--ok); }

.muted { color: var(--muted); }
.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }
.toast {
  position: fixed; right: 18px; bottom: 18px;
  background: #1e2429; color: #fff; padding: 10px 14px;
  border-radius: 6px; font-size: 13px; opacity: 0; transition: opacity .2s;
  pointer-events: none; max-width: 460px;
  display: flex; align-items: center; gap: 12px;
}
.toast.show { opacity: 1; }
/* 提示里带「撤销」按钮时，得单独把这个按钮放行，否则会被父元素的
   pointer-events: none 一起禁掉，点不动 */
.toast button {
  pointer-events: auto;
  background: transparent; border-color: #6b7480; color: #fff;
  flex: none;
}

/* 会员搜索 */
.search-wrap { position: relative; }
.search-drop {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 30;
  background: #fff; border: 1px solid var(--border); border-top: 0;
  border-radius: 0 0 5px 5px; max-height: 280px; overflow-y: auto;
  box-shadow: 0 6px 16px rgba(0,0,0,.08);
}
.search-drop .item { padding: 8px 11px; cursor: pointer; border-bottom: 1px solid var(--border); }
.search-drop .item:last-child { border-bottom: 0; }
.search-drop .item:hover { background: var(--accent-soft); }
.search-drop .item .sub { font-size: 12px; color: var(--muted); margin-left: 6px; }
tr.hl td { background: #fff8dc; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 320px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 22px;
}
.login-card h1 { font-size: 16px; margin: 0 0 16px; }