/* ============================================
   软件销售系统 - 管理后台样式
   简洁清爽 · 现代化
   ============================================ */
:root {
  --primary: #3b6ef6;
  --primary-dark: #2f5ad1;
  --primary-light: #eaf0fe;
  --bg: #f4f6fb;
  --card: #ffffff;
  --border: #e6e9f0;
  --text: #1f2733;
  --text-2: #6b7484;
  --success: #18a05e;
  --success-bg: #e8f8f0;
  --danger: #e5484d;
  --danger-bg: #fdecec;
  --warning: #d97706;
  --warning-bg: #fdf3e3;
  --info: #0e7490;
  --info-bg: #e6f6fa;
  --sidebar-w: 224px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: #101828;
  color: #cbd2df;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #fff;
}
.sidebar .brand .logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), #7aa2ff);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; color: #fff; font-weight: 700; flex-shrink: 0;
}
.sidebar .brand .name { font-size: 15px; font-weight: 600; }
.sidebar .nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar .nav .group { padding: 14px 12px 6px; font-size: 11px; color: #6b7280; letter-spacing: .5px; }
.sidebar .nav a.item {
  display: flex; align-items: center; gap: 11px;
  padding: 10px 12px; margin: 2px 0;
  border-radius: 9px; color: #cbd2df; font-size: 13.5px;
  transition: background .15s, color .15s;
}
.sidebar .nav a.item i { width: 18px; text-align: center; font-size: 15px; opacity: .9; }
.sidebar .nav a.item:hover { background: rgba(255,255,255,.06); color: #fff; }
.sidebar .nav a.item.active { background: var(--primary); color: #fff; }
.sidebar .foot { padding: 14px 18px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12px; color: #8a94a6; }

.main {
  flex: 1; margin-left: var(--sidebar-w);
  display: flex; flex-direction: column; min-width: 0;
}
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.topbar .page-title { font-size: 17px; font-weight: 600; }
.topbar .user {
  display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; color: var(--text-2);
}
.topbar .avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-weight: 600;
}
.content { padding: 22px 24px; flex: 1; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card .card-head {
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.card .card-head h3 { font-size: 15px; font-weight: 600; }
.card .card-body { padding: 18px; }

/* ---------- 统计卡 ---------- */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 20px;
}
.stat-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; display: flex; align-items: center; gap: 14px;
}
.stat-card .icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  flex-shrink: 0;
}
.stat-card .val { font-size: 22px; font-weight: 700; line-height: 1.2; }
.stat-card .label { font-size: 12.5px; color: var(--text-2); }
.ic-blue { background: var(--primary-light); color: var(--primary); }
.ic-green { background: var(--success-bg); color: var(--success); }
.ic-orange { background: var(--warning-bg); color: var(--warning); }
.ic-red { background: var(--danger-bg); color: var(--danger); }
.ic-cyan { background: var(--info-bg); color: var(--info); }
.ic-gray { background: #eef1f6; color: #5a6472; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; min-width: 680px; }
table.tbl th, table.tbl td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13.5px; }
table.tbl th {
  background: #fafbfd; color: var(--text-2); font-weight: 600; font-size: 12.5px;
  white-space: nowrap;
}
table.tbl tbody tr:hover { background: #f8faff; }
table.tbl .ops { white-space: nowrap; }
table.tbl .ops a { margin-right: 10px; font-size: 13px; cursor: pointer; }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 20px;
  font-size: 12px; font-weight: 500; line-height: 1.6;
}
.badge-green { background: var(--success-bg); color: var(--success); }
.badge-red { background: var(--danger-bg); color: var(--danger); }
.badge-orange { background: var(--warning-bg); color: var(--warning); }
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-gray { background: #eef1f6; color: #5a6472; }
.badge-cyan { background: var(--info-bg); color: var(--info); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 15px; border-radius: 8px; border: 1px solid transparent;
  font-size: 13.5px; font-weight: 500; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  background: #fff; color: var(--text);
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { border-color: #d4d9e3; background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #148a52; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c93a3f; color: #fff; }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
.form-item label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.form-item input[type=text], .form-item input[type=password], .form-item input[type=number], .form-item input[type=date],
.form-item select, .form-item textarea {
  width: 100%; padding: 9px 12px; border: 1px solid #d4d9e3; border-radius: 8px;
  font-size: 13.5px; font-family: inherit; color: var(--text); background: #fff;
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,110,246,.12);
}
.form-item textarea { resize: vertical; min-height: 70px; }
.form-actions { display: flex; gap: 10px; margin-top: 18px; justify-content: flex-end; }

/* ---------- 工具栏 ---------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .search {
  display: flex; align-items: center; gap: 8px; flex: 1; min-width: 220px; max-width: 360px;
  background: #fff; border: 1px solid #d4d9e3; border-radius: 8px; padding: 0 12px;
}
.toolbar .search input { border: none; outline: none; padding: 9px 0; flex: 1; font-size: 13.5px; background: transparent; }
.toolbar .search i { color: #9aa3b2; }
.toolbar select, .toolbar input[type=text].f {
  padding: 8px 12px; border: 1px solid #d4d9e3; border-radius: 8px; font-size: 13.5px; background: #fff; outline: none;
}

/* ---------- 分页 ---------- */
.pager { display: flex; align-items: center; gap: 6px; margin-top: 16px; justify-content: flex-end; flex-wrap: wrap; }
.pager .pg-btn {
  min-width: 32px; height: 32px; padding: 0 8px; border-radius: 8px;
  border: 1px solid #d4d9e3; background: #fff; cursor: pointer; font-size: 13px; color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
}
.pager .pg-btn:hover { border-color: var(--primary); color: var(--primary); }
.pager .pg-btn.cur { background: var(--primary); color: #fff; border-color: var(--primary); }
.pager .pg-btn.dis { opacity: .45; cursor: not-allowed; }
.pager .info { font-size: 12.5px; color: var(--text-2); margin-right: 8px; }

/* ---------- 弹窗 ---------- */
.mask {
  position: fixed; inset: 0; background: rgba(16,24,40,.45);
  display: none; align-items: flex-start; justify-content: center;
  z-index: 200; padding: 40px 16px; overflow-y: auto;
}
.mask.show { display: flex; }
.modal {
  background: #fff; border-radius: 14px; width: 100%; max-width: 560px;
  box-shadow: 0 20px 50px rgba(0,0,0,.2); margin: auto;
}
.modal .m-head { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal .m-head h3 { font-size: 15.5px; font-weight: 600; }
.modal .m-head .close { cursor: pointer; color: #9aa3b2; font-size: 18px; padding: 4px; }
.modal .m-head .close:hover { color: var(--danger); }
.modal .m-body { padding: 20px; }
.modal .m-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.modal-lg { max-width: 720px; }

/* ---------- 提示 ---------- */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-20px);
  background: #101828; color: #fff; padding: 10px 20px; border-radius: 10px;
  font-size: 13.5px; opacity: 0; pointer-events: none; transition: all .25s; z-index: 300;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { background: var(--success); }
.toast.err { background: var(--danger); }

/* ---------- 登录页 ---------- */
.login-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eaf0fe 0%, #f4f6fb 55%, #e8f8f0 100%);
  padding: 20px;
}
.login-box {
  width: 100%; max-width: 400px; background: #fff; border-radius: 16px;
  box-shadow: 0 20px 50px rgba(16,24,40,.10); padding: 34px 32px;
}
.login-box .logo {
  width: 52px; height: 52px; border-radius: 14px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), #7aa2ff);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 24px; font-weight: 700;
}
.login-box h1 { text-align: center; font-size: 19px; margin-bottom: 4px; }
.login-box .sub { text-align: center; color: var(--text-2); font-size: 13px; margin-bottom: 24px; }
.login-box .form-item { margin-bottom: 16px; }
.login-box .form-item input {
  width: 100%; padding: 11px 13px; border: 1px solid #d4d9e3; border-radius: 9px;
  font-size: 14px; outline: none;
}
.login-box .form-item input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,110,246,.12); }
.login-box .btn { width: 100%; justify-content: center; padding: 11px; font-size: 14.5px; margin-top: 6px; }
.login-err {
  background: var(--danger-bg); color: var(--danger); border-radius: 8px;
  padding: 9px 12px; font-size: 13px; margin-bottom: 14px; display: none;
}

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 44px 20px; color: #9aa3b2; }
.empty i { font-size: 36px; display: block; margin-bottom: 10px; opacity: .6; }

/* ---------- 图表区 ---------- */
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
@media (max-width: 900px) { .chart-row { grid-template-columns: 1fr; } }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .sidebar { width: 64px; }
  .sidebar .brand .name, .sidebar .nav .group, .sidebar .nav a.item span, .sidebar .foot { display: none; }
  .sidebar .nav a.item { justify-content: center; }
  .main { margin-left: 64px; }
  .content { padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
}

/* 列表页小卡 */
.mini-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.mini-card { background:#fff; border:1px solid var(--border); border-radius:10px; padding:12px 14px; }
.mini-card .n { font-size: 18px; font-weight: 700; }
.mini-card .t { font-size: 12px; color: var(--text-2); }