/* 卡密管理后台样式 —— 手写 CSS，无需构建工具，可直接丢到 Cloudflare Pages */

:root {
  --bg: #0e1218;
  --bg2: #151b24;
  --card: #1a212c;
  --card2: #212a37;
  --line: #2a3543;
  --fg: #e6edf6;
  --sub: #8b9aae;
  --accent: #3b82f6;
  --accent2: #2563eb;
  --ok: #34d399;
  --warn: #fbbf24;
  --danger: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.6 "Microsoft YaHei UI", "PingFang SC", system-ui, -apple-system, sans-serif;
}

.hidden { display: none !important; }
.spacer { flex: 1; }

/* ---------------------------------------------------------------- 登录 */

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, #1b2740 0%, var(--bg) 55%);
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .5);
}

.logo { font-size: 34px; text-align: center; }
.login-card h1 { font-size: 20px; text-align: center; margin: 8px 0 4px; }
.login-card .sub { text-align: center; color: var(--sub); font-size: 13px; margin: 0 0 22px; }

label { display: block; font-size: 12px; color: var(--sub); margin: 14px 0 6px; }

input, select, textarea {
  width: 100%;
  background: #0c1017;
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
input.small { width: 92px; }
textarea { font-family: Consolas, "Courier New", monospace; font-size: 13px; line-height: 1.7; }

/* ---------------------------------------------------------------- 按钮 */

.btn {
  background: var(--card2);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 16px;
  font: inherit;
  cursor: pointer;
  transition: .15s;
  white-space: nowrap;
}
.btn:hover { background: #2a3444; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--accent2); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { background: var(--card2); }
.btn.danger { color: var(--danger); border-color: #4a2b2b; }
.btn.danger:hover { background: #2a1a1a; }
.btn.block { width: 100%; margin-top: 22px; padding: 12px; }
.btn.tiny { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------------------------------------------------------------- 布局 */

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background: var(--bg2);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 15px; }
.topbar .select { width: auto; min-width: 180px; }

.tabs {
  display: flex;
  gap: 4px;
  padding: 10px 20px 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 57px;
  z-index: 19;
  flex-wrap: wrap;
}
.tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--sub);
  padding: 10px 16px;
  font: inherit;
  cursor: pointer;
  border-radius: 8px 8px 0 0;
}
.tab:hover { color: var(--fg); background: var(--bg2); }
.tab.active { color: var(--fg); border-bottom-color: var(--accent); font-weight: 600; }

main { padding: 18px 20px 60px; max-width: 1400px; margin: 0 auto; }
.panel { display: none; }
.panel.active { display: block; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 12px; font-size: 14px; }

.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.row:last-child { margin-bottom: 0; }
.row label { margin: 0; white-space: nowrap; }
.grow { flex: 1; min-width: 180px; }
.chk { display: flex; align-items: center; gap: 6px; color: var(--fg); font-size: 13px; }
.chk input { width: auto; }

.hint { color: var(--sub); font-size: 12px; margin: 6px 0 0; }
.warn { color: var(--warn); font-size: 13px; }

.warn-bar {
  background: #3a2e10;
  border-bottom: 1px solid #6b5518;
  color: var(--warn);
  padding: 10px 20px;
  font-size: 13px;
}

/* ---------------------------------------------------------------- 统计卡 */

.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-bottom: 14px; }
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
}
.stat .n { font-size: 26px; font-weight: 700; line-height: 1.2; }
.stat .l { color: var(--sub); font-size: 12px; margin-top: 2px; }
.stat.ok .n { color: var(--ok); }
.stat.warn .n { color: var(--warn); }
.stat.danger .n { color: var(--danger); }
.stat.accent .n { color: var(--accent); }

/* ---------------------------------------------------------------- 表格 */

.table-card { padding: 0; overflow: hidden; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left;
  padding: 11px 14px;
  background: var(--bg2);
  color: var(--sub);
  font-weight: 600;
  font-size: 12px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
tbody td { padding: 10px 14px; border-bottom: 1px solid #1f2836; vertical-align: middle; }
tbody tr:hover { background: #1d2531; }
tbody tr:last-child td { border-bottom: none; }
.mono { font-family: Consolas, "Courier New", monospace; }
tbody td .btn { margin-right: 4px; }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid transparent;
}
.badge.unused { background: #1e2a3d; color: #7fb0f5; border-color: #2c3f5c; }
.badge.active { background: #14301f; color: var(--ok); border-color: #1f4a32; }
.badge.banned { background: #331a1a; color: var(--danger); border-color: #4d2626; }
.badge.revoked { background: #2a2a2a; color: #999; border-color: #3a3a3a; }
.badge.expired { background: #3a2e10; color: var(--warn); border-color: #5c4818; }
.badge.online { background: #14301f; color: var(--ok); border-color: #1f4a32; }
.badge.offline { background: #242424; color: #888; border-color: #333; }

.pager { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 12px; color: var(--sub); font-size: 13px; }

.code {
  background: #0c1017;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12.5px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: #9fd0ff;
  margin: 0 0 10px;
}

.steps { margin: 0; padding-left: 20px; }
.steps li { margin-bottom: 10px; }
.steps code, .help code { background: #0c1017; padding: 2px 6px; border-radius: 4px; font-size: 12px; color: #9fd0ff; }

.faq dt { font-weight: 600; margin-top: 12px; }
.faq dd { margin: 4px 0 0; color: var(--sub); }

/* ---------------------------------------------------------------- 弹窗 */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  width: 100%;
  max-width: 620px;
  max-height: 88vh;
  overflow: auto;
}
.modal-card h3 { margin: 0 0 10px; }

.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 11px 22px;
  border-radius: 24px;
  font-size: 13px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
  z-index: 200;
}
.toast.err { background: #b91c1c; }

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

.help { margin-top: 20px; border-top: 1px solid var(--line); padding-top: 14px; }
.help summary { cursor: pointer; color: var(--sub); font-size: 13px; }
.help ol { color: var(--sub); font-size: 13px; padding-left: 18px; }
.help p { font-size: 13px; }