/* ============================================================
   星域科技官网 - 后台管理样式
   ============================================================ */
:root {
  --bg: #070d1c;
  --panel: #0d1730;
  --panel-2: #111d3d;
  --line: rgba(110, 190, 255, .16);
  --cyan: #38e8ff;
  --blue: #4d7cff;
  --violet: #8b5cf6;
  --green: #34f5c5;
  --red: #f87171;
  --txt-0: #eef4ff;
  --txt-1: #b9c8e6;
  --txt-2: #7d92b8;
  --grad: linear-gradient(92deg, #38e8ff, #4d7cff 55%, #8b5cf6);
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: var(--font);
  background:
    radial-gradient(800px 400px at 90% -10%, rgba(139, 92, 246, .14), transparent 60%),
    var(--bg);
  color: var(--txt-0);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; }

/* ---------- 布局 ---------- */
.adm-wrap { display: flex; min-height: 100vh; }
.adm-side {
  width: 224px; flex: 0 0 224px;
  background: rgba(8, 14, 32, .92);
  border-right: 1px solid var(--line);
  padding: 22px 14px;
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column;
}
.adm-logo { display: flex; align-items: center; gap: 10px; padding: 4px 10px 22px; font-size: 17px; font-weight: 800; }
.adm-logo small { display: block; font-size: 10px; letter-spacing: 2px; color: var(--txt-2); font-weight: 500; }
.adm-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.adm-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 9px;
  color: var(--txt-1);
  transition: background .2s, color .2s;
}
.adm-nav a:hover { background: rgba(56, 232, 255, .07); color: var(--cyan); }
.adm-nav a.active { background: linear-gradient(90deg, rgba(56, 232, 255, .16), rgba(139, 92, 246, .1)); color: var(--cyan); font-weight: 600; }
.adm-nav .badge {
  margin-left: auto;
  background: var(--red); color: #fff;
  font-size: 11px; min-width: 18px; height: 18px;
  border-radius: 9px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0 5px;
}
.adm-main { flex: 1; padding: 26px 34px 60px; min-width: 0; }
.adm-top {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 26px;
}
.adm-top h1 { font-size: 21px; font-weight: 800; }
.adm-top .spacer { flex: 1; }
.adm-user { color: var(--txt-1); font-size: 13px; }
.adm-user b { color: var(--cyan); }

/* ---------- 卡片 ---------- */
.adm-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 22px;
}
.adm-card h2 { font-size: 16px; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.adm-grid-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.adm-stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  display: flex; align-items: center; gap: 14px;
}
.adm-stat .num { font-size: 26px; font-weight: 800; font-variant-numeric: tabular-nums; }
.adm-stat .num.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.adm-stat .lbl { color: var(--txt-2); font-size: 12.5px; }
.adm-stat .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: rgba(56, 232, 255, .1); border: 1px solid rgba(56, 232, 255, .25); color: var(--cyan); }

/* ---------- 表格 ---------- */
.adm-table { width: 100%; border-collapse: collapse; }
.adm-table th {
  text-align: left; font-size: 12px; letter-spacing: 1px;
  color: var(--txt-2);
  text-transform: uppercase;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.adm-table td { padding: 12px; border-bottom: 1px solid rgba(110, 190, 255, .08); vertical-align: middle; }
.adm-table tr:hover td { background: rgba(56, 232, 255, .03); }
.adm-table .row-title { font-weight: 600; }
.adm-table .row-sub { color: var(--txt-2); font-size: 12.5px; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--txt-1);
}
.tag.on { color: var(--green); border-color: rgba(52, 245, 197, .45); background: rgba(52, 245, 197, .07); }
.tag.off { color: var(--txt-2); }
.tag.new { color: #ffd166; border-color: rgba(255, 209, 102, .45); background: rgba(255, 209, 102, .07); }
.tag.read { color: var(--text-2); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: 9px;
  font-size: 13px; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: filter .2s, background .2s;
}
.btn:hover { filter: brightness(1.12); }
.btn-primary { background: var(--grad); color: #04101f; }
.btn-ghost { border-color: var(--line); color: var(--txt-1); background: transparent; }
.btn-ghost:hover { color: var(--cyan); border-color: rgba(56, 232, 255, .5); }
.btn-danger { background: rgba(248, 113, 113, .12); color: var(--red); border-color: rgba(248, 113, 113, .4); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }
.btn-ico { padding: 6px 9px; font-size: 13px; }

/* ---------- 表单 ---------- */
.frm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.frm { margin-bottom: 16px; }
.frm.full { grid-column: 1 / -1; }
.frm label { display: block; font-size: 13px; color: var(--txt-1); margin-bottom: 7px; font-weight: 600; }
.frm label i { color: var(--red); font-style: normal; }
.frm input[type="text"], .frm input[type="password"], .frm input[type="email"], .frm input[type="number"], .frm select, .frm textarea {
  width: 100%;
  padding: 10px 13px;
  font-size: 14px;
  color: var(--txt-0);
  background: rgba(4, 10, 22, .65);
  border: 1px solid var(--line);
  border-radius: 9px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.frm input:focus, .frm select:focus, .frm textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(56, 232, 255, .12); }
.frm textarea { resize: vertical; min-height: 130px; }
.frm .hint { font-size: 12px; color: var(--txt-2); margin-top: 5px; }
.frm-actions { display: flex; gap: 12px; margin-top: 22px; }
.frm-actions .btn { padding: 10px 26px; }

/* ---------- 提示 ---------- */
.alert { padding: 12px 16px; border-radius: 10px; margin-bottom: 18px; font-size: 13.5px; }
.alert-ok { background: rgba(52, 245, 197, .08); color: var(--green); border: 1px solid rgba(52, 245, 197, .35); }
.alert-err { background: rgba(248, 113, 113, .08); color: var(--red); border: 1px solid rgba(248, 113, 113, .35); }

/* ---------- 空状态 ---------- */
.adm-empty { text-align: center; color: var(--txt-2); padding: 44px 0; font-size: 13.5px; }

/* ---------- 登录页 ---------- */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 24px;
}
.login-card {
  width: 100%; max-width: 400px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 40px 36px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .55);
}
.login-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-card .sub { color: var(--txt-2); font-size: 13px; margin-bottom: 26px; }

/* ---------- 移动端适配后台 ---------- */
@media (max-width: 860px) {
  .adm-wrap { flex-direction: column; }
  .adm-side { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 12px 16px; gap: 8px; }
  .adm-logo { padding: 4px 6px; }
  .adm-nav { flex-direction: row; flex-wrap: wrap; }
  .adm-nav a { padding: 7px 10px; font-size: 13px; }
  .adm-main { padding: 20px 16px 50px; }
  .adm-grid-stats { grid-template-columns: repeat(2, 1fr); }
  .frm-grid { grid-template-columns: 1fr; }
  .adm-table-wrap { overflow-x: auto; }
  .adm-table { min-width: 620px; }
}
@media (max-width: 480px) {
  .adm-grid-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .adm-stat { padding: 14px; flex-direction: column; text-align: center; gap: 8px; }
}