:root {
  --bg: #f4f5f7;
  --bg2: #ffffff;
  --panel: #ffffff;
  --panel2: #eef0f3;
  --line: #e6e8eb;
  --line2: #c9ced6;
  --text: #1f2937;
  --muted: #667085;
  --cyan: #2563eb;
  --cyan-dim: rgba(37, 99, 235, 0.12);
  --amber: #b45309;
  --amber-dim: rgba(180, 83, 9, 0.12);
  --green: #15803d;
  --red: #dc2626;
  --mono: "Consolas", "SF Mono", "Cascadia Mono", monospace;
  --sans: "Microsoft YaHei", "PingFang SC", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--cyan); text-decoration: none; }

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: #eef0f3;
}

.login-card {
  width: 400px;
  max-width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
}

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }

.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  color: #ffffff;
  background: var(--cyan);
  border-radius: 6px;
  letter-spacing: -0.5px;
}

.brand h1 { font-size: 17px; font-weight: 600; letter-spacing: 0.5px; }
.brand p { color: var(--muted); font-size: 12px; letter-spacing: 1.5px; }

.role-tabs { display: flex; gap: 6px; margin-bottom: 20px; background: var(--panel2); padding: 4px; border-radius: 7px; }
.role-tabs button {
  flex: 1; padding: 8px; border: 0; border-radius: 5px; cursor: pointer;
  background: transparent; color: var(--muted); font-family: var(--sans); font-size: 13px;
}
.role-tabs button.active { background: #ffffff; color: var(--text); font-weight: 600; border: 1px solid var(--line); }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--text); margin-bottom: 6px; }
.field input {
  width: 100%; padding: 9px 12px; border-radius: 6px;
  background: var(--bg2); border: 1px solid var(--line2); color: var(--text);
  font-family: var(--sans); font-size: 13px; outline: none;
}
.field input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-dim); }
.field textarea {
  width: 100%; padding: 9px 12px; border-radius: 6px;
  background: var(--bg2); border: 1px solid var(--line2); color: var(--text);
  font-family: var(--sans); font-size: 13px; line-height: 1.6; outline: none;
  resize: vertical;
}
.field textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-dim); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  padding: 8px 14px; border-radius: 6px; cursor: pointer; font-family: var(--sans);
  font-size: 13px; border: 1px solid var(--line2); background: var(--bg2); color: var(--text);
  white-space: nowrap;
}
.btn:hover { border-color: var(--cyan); color: var(--cyan); }
.btn.primary { background: var(--cyan); color: #ffffff; border-color: var(--cyan); font-weight: 600; }
.btn.primary:hover { background: #1d4ed8; border-color: #1d4ed8; color: #ffffff; }
.btn.danger { color: var(--red); }
.btn.danger:hover { border-color: var(--red); background: #fef2f2; }
.btn.amber { color: var(--amber); }
.btn.amber:hover { border-color: var(--amber); background: #fffbeb; }
.btn.sm { padding: 5px 9px; font-size: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- 布局 ---------- */
.app { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 24px; border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.topbar .brand { margin: 0; }
.topbar .brand h1 { font-size: 15px; }
.topbar .spacer { flex: 1; }
.topbar .who { text-align: right; }
.topbar .who b { color: var(--text); font-family: var(--sans); font-size: 13px; }
.topbar .who span { display: block; color: var(--muted); font-size: 11px; }

.nav {
  display: flex; gap: 2px; padding: 0 24px;
  border-bottom: 1px solid var(--line); background: var(--panel);
  overflow-x: auto;
}
.nav button {
  padding: 12px 14px; background: transparent; border: 0; color: var(--muted);
  font-family: var(--sans); font-size: 13px; cursor: pointer; border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav button:hover { color: var(--text); }
.nav button.active { color: var(--cyan); border-bottom-color: var(--cyan); font-weight: 600; }

.main { flex: 1; padding: 24px; max-width: 1280px; width: 100%; margin: 0 auto; }

/* ---------- 统计卡 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px;
}
.stat .k { color: var(--muted); font-size: 12px; }
.stat .v { font-family: var(--sans); font-size: 26px; font-weight: 600; margin-top: 4px; color: var(--text); }
.stat.green .v { color: var(--green); }
.stat.amber .v { color: var(--amber); }

/* ---------- 面板 ---------- */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.panel-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.panel-head h2 { font-size: 14px; font-weight: 600; }
.panel-head .spacer { flex: 1; }
.panel-body { padding: 16px; }

.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar select, .toolbar input {
  padding: 7px 10px; border-radius: 6px; background: var(--bg2);
  border: 1px solid var(--line2); color: var(--text); font-family: var(--sans); font-size: 13px; outline: none;
}
.toolbar input:focus, .toolbar select:focus { border-color: var(--cyan); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12px; background: #f9fafb; }
tbody tr:hover { background: #f8fafc; }
td.mono, .mono { font-family: var(--mono); font-size: 12.5px; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.tag.unused { background: #eff6ff; color: #1d4ed8; }
.tag.used { background: #ecfdf5; color: var(--green); }
.tag.banned { background: #fef2f2; color: var(--red); }
.tag.expired { background: #fffbeb; color: var(--amber); }
.tag.off { background: var(--panel2); color: var(--muted); }

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

/* ---------- 对话框 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(16, 24, 40, 0.45);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px;
}
.modal {
  width: 520px; max-width: 100%; max-height: 90vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 10px 40px rgba(16, 24, 40, 0.15);
}
.modal-head { display: flex; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.modal-head h3 { font-size: 14px; font-weight: 600; }
.modal-head .spacer { flex: 1; }
.modal-head .x { cursor: pointer; color: var(--muted); font-size: 20px; background: none; border: 0; }
.modal-body { padding: 18px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 12px 18px; border-top: 1px solid var(--line); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.card-preview { margin-top: 14px; padding: 12px; background: #f9fafb; border: 1px solid var(--line); border-radius: 6px; font-family: var(--mono); font-size: 12px; color: var(--text); max-height: 200px; overflow: auto; white-space: pre-wrap; word-break: break-all; }

.toast {
  position: fixed; right: 22px; bottom: 22px; z-index: 200;
  padding: 11px 16px; border-radius: 6px; font-size: 13px;
  background: var(--panel); border: 1px solid var(--line); box-shadow: 0 6px 24px rgba(16, 24, 40, 0.12);
}
.toast.ok { border-color: #a7f3d0; color: var(--green); }
.toast.err { border-color: #fecaca; color: var(--red); }

@keyframes slideIn { from { transform: translateY(8px); opacity: 0; } to { transform: none; opacity: 1; } }

@media (max-width: 720px) {
  .main { padding: 16px; }
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .topbar { padding: 10px 16px; }
  .nav { padding: 0 16px; }
}