* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #6d28d9;
  --primary-d: #5b21b6;
  --bg: #f4f5fb;
  --panel: #ffffff;
  --border: #e7e7ef;
  --text: #1f2430;
  --muted: #8a8fa3;
  --green: #16a34a;
  --red: #dc2626;
  --blue: #2563eb;
  --amber: #d97706;
}
html, body { height: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px;
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 登录 ---------- */
.login-screen {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1f2a52, #3a2b6b 45%, #7c3aed);
}
.login-box {
  width: 360px; background: #fff; border-radius: 18px; padding: 40px 34px;
  box-shadow: 0 24px 60px rgba(0,0,0,.25); text-align: center; color: var(--text);
}
.login-brand { font-size: 22px; font-weight: 700; color: var(--primary); }
.login-sub { font-size: 13px; color: var(--muted); margin: 6px 0 26px; }
.login-box label { display: block; text-align: left; font-size: 13px; color: #555; margin: 14px 0 6px; }
.login-box input {
  width: 100%; height: 42px; border: 1px solid var(--border); border-radius: 10px;
  padding: 0 12px; font-size: 14px; outline: none; transition: .2s;
}
.login-box input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(109,40,217,.12); }
.login-err { color: var(--red); font-size: 12px; min-height: 18px; margin-top: 10px; }
.login-box button {
  width: 100%; height: 44px; margin-top: 16px; border: none; border-radius: 10px;
  background: var(--primary); color: #fff; font-size: 15px; font-weight: 600; transition: .2s;
}
.login-box button:hover { background: var(--primary-d); }
.login-tip { font-size: 12px; color: var(--muted); margin-top: 16px; }
.login-back { display: inline-block; margin-top: 14px; font-size: 12px; color: var(--primary); text-decoration: none; }

/* ---------- 布局 ---------- */
.app { display: flex; height: 100vh; }
.sidebar {
  width: 220px; background: #1e1b3a; color: #cfcae0; display: flex; flex-direction: column;
}
.side-logo { padding: 20px 18px; font-size: 18px; font-weight: 700; color: #fff; }
.side-nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.side-nav a {
  display: flex; align-items: center; gap: 10px; padding: 12px 20px; color: #b9b4d0;
  text-decoration: none; font-size: 14px; border-left: 3px solid transparent; transition: .15s;
}
.side-nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
.side-nav a.active { background: rgba(124,58,237,.25); color: #fff; border-left-color: #a78bfa; }
.side-foot { padding: 14px 20px; border-top: 1px solid rgba(255,255,255,.08); }
.side-foot a { color: #8e89a8; font-size: 12px; text-decoration: none; }

.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  height: 60px; background: var(--panel); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; padding: 0 24px;
}
.top-title { font-size: 18px; font-weight: 600; }
.top-right { display: flex; align-items: center; gap: 14px; }
.top-user { font-size: 13px; color: var(--muted); }
.btn-ghost {
  border: 1px solid var(--border); background: #fff; border-radius: 8px; padding: 7px 14px; font-size: 13px; color: #555;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.content { flex: 1; overflow-y: auto; padding: 24px; }

/* ---------- 通用组件 ---------- */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  border: none; border-radius: 9px; padding: 9px 16px; font-size: 13px; font-weight: 600;
  background: var(--primary); color: #fff; transition: .15s;
}
.btn:hover { background: var(--primary-d); }
.btn-line { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-line:hover { background: rgba(109,40,217,.06); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-danger { background: #fff; color: var(--red); border: 1px solid var(--red); }
.btn-danger:hover { background: rgba(220,38,38,.06); }
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar .search {
  flex: 1; min-width: 200px; height: 38px; border: 1px solid var(--border); border-radius: 9px;
  padding: 0 12px; font-size: 13px; outline: none;
}
.toolbar .search:focus { border-color: var(--primary); }

/* 统计卡 */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; }
.stat .k { font-size: 13px; color: var(--muted); }
.stat .v { font-size: 26px; font-weight: 700; margin-top: 6px; }
.stat .s { font-size: 12px; margin-top: 4px; color: var(--muted); }

/* 表格 */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--border); }
th { color: #6b7080; font-weight: 600; background: #faf9fe; }
tbody tr:hover { background: #faf9fe; }
.ops a { color: var(--primary); margin-right: 10px; cursor: pointer; text-decoration: none; font-size: 13px; }
.ops a.del { color: var(--red); }

.tag { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; }
.tag.green { background: #dcfce7; color: var(--green); }
.tag.red { background: #fee2e2; color: var(--red); }
.tag.blue { background: #dbeafe; color: var(--blue); }
.tag.amber { background: #fef3c7; color: var(--amber); }
.tag.gray { background: #eef0f4; color: #6b7080; }

.panel-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; }

/* 弹窗 */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; }
.modal-mask { position: absolute; inset: 0; background: rgba(15,12,30,.5); }
.modal-card {
  position: relative; width: 520px; max-width: 92vw; max-height: 86vh; overflow: hidden;
  background: #fff; border-radius: 14px; display: flex; flex-direction: column;
}
.modal-head {
  padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 15px;
  display: flex; justify-content: space-between; align-items: center;
}
.modal-close { border: none; background: none; font-size: 22px; color: #999; line-height: 1; }
.modal-body { padding: 20px; overflow-y: auto; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.form-field { display: flex; flex-direction: column; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 12px; color: #666; margin-bottom: 5px; }
.form-field input, .form-field select, .form-field textarea {
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; font-size: 13px; outline: none; font-family: inherit;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--primary); }
.form-field textarea { resize: vertical; min-height: 64px; }

/* 报表 */
.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.bar-label { width: 120px; font-size: 13px; color: #555; text-align: right; }
.bar-track { flex: 1; background: #eef0f6; border-radius: 6px; height: 22px; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, #8b5cf6, #6d28d9); border-radius: 6px; }
.bar-val { width: 90px; font-size: 12px; color: #555; }

.empty { text-align: center; color: var(--muted); padding: 40px 0; }

@media (max-width: 980px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}