:root {
  --bg: #06090f;
  --bg2: #0b1220;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-border: rgba(255, 255, 255, 0.09);
  --text: #e8edf6;
  --muted: #8b96ad;
  --accent: #7cc7ff;
  --accent2: #b98cff;
  --gold: #d9a94e;
  --danger: #ff6b6b;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(76, 116, 255, 0.22), transparent 60%),
    radial-gradient(900px 500px at 90% 0%, rgba(140, 80, 255, 0.18), transparent 55%),
    radial-gradient(700px 700px at 50% 120%, rgba(0, 180, 200, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  color: var(--text);
  min-height: 100vh;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }

/* ---- 品牌 ---- */
.brand { display: flex; align-items: center; gap: 12px; }
.brand-center { flex-direction: column; gap: 8px; margin-bottom: 16px; }
.brand-img {
  width: 52px; height: 52px;
  object-fit: cover;
  border-radius: 14px;
  box-shadow: 0 0 0 2px rgba(124, 199, 255, 0.25), 0 8px 24px rgba(80, 120, 255, 0.35);
}
.brand-center .brand-img { width: 72px; height: 72px; border-radius: 20px; }
.brand-text h1 { margin: 0; font-size: 20px; line-height: 1.25; letter-spacing: 0.3px; }
.brand-text h1 .star { color: var(--gold); font-size: 0.7em; vertical-align: super; margin-left: 2px; }
.brand-text .footnote { margin: 3px 0 0; font-size: 12px; color: var(--muted); }
.brand-center .brand-text { text-align: center; }
.brand-center .brand-text h1 { font-size: 24px; }

/* ---- 登录 ---- */
.login-view {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
}
.login-card {
  width: 100%; max-width: 400px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 34px 30px;
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}
.login-tip { margin: 0 0 18px; font-size: 12px; color: var(--muted); text-align: center; }
.field-name { display: block; font-size: 12px; color: var(--muted); margin: 12px 0 6px; }
input, select {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 199, 255, 0.15); }
.err { color: var(--danger); font-size: 13px; margin: 10px 0 0; }

/* ---- 按钮 ---- */
.btn {
  border: none; border-radius: 10px;
  padding: 10px 18px; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.15s;
}
.btn.primary {
  width: 100%; margin-top: 18px;
  background: linear-gradient(135deg, #4c74ff, #9a5cff);
  color: #fff; box-shadow: 0 6px 20px rgba(90, 110, 255, 0.35);
}
.btn.primary:hover { filter: brightness(1.12); }
.btn.ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--panel-border);
  padding: 8px 14px; width: auto; margin: 0;
}
.btn.ghost:hover { color: var(--text); border-color: var(--accent); }
.btn.danger:hover { color: var(--danger); border-color: var(--danger); }
.btn.small { padding: 5px 10px; font-size: 12px; margin: 0; }

/* ---- 顶栏 ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 26px;
  background: rgba(6, 9, 15, 0.72);
  border-bottom: 1px solid var(--panel-border);
  backdrop-filter: blur(14px);
  position: sticky; top: 0; z-index: 10;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
#refresh-time { font-size: 12px; font-family: var(--mono); }

/* ---- 布局 ---- */
.container { max-width: 1080px; margin: 0 auto; padding: 22px 20px 40px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 20px;
  backdrop-filter: blur(12px);
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.panel-head h2 { margin: 0; font-size: 16px; letter-spacing: 0.4px; }
.chip {
  background: rgba(124, 199, 255, 0.12);
  border: 1px solid rgba(124, 199, 255, 0.3);
  color: var(--accent);
  border-radius: 999px; padding: 5px 12px; font-size: 12px; font-weight: 600;
}
.chip-ghost { background: transparent; color: var(--muted); border-color: var(--panel-border); }

/* ---- 档位卡片 ---- */
.tier-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px;
}
.tier-card {
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--panel-border);
  border-radius: 14px; padding: 16px;
}
.tier-card .tier-label { font-size: 13px; color: var(--muted); font-weight: 600; }
.tier-card .tier-value { font-size: 12px; color: var(--gold); margin: 2px 0 10px; }
.tier-card .tier-num { font-size: 26px; font-weight: 700; font-family: var(--mono); }
.tier-card .tier-num small { font-size: 12px; color: var(--muted); font-weight: 400; }
.tier-card .bar { height: 6px; background: rgba(255,255,255,0.08); border-radius: 99px; margin: 12px 0 8px; overflow: hidden; }
.tier-card .bar > i {
  display: block; height: 100%;
  background: linear-gradient(90deg, #4c74ff, #9a5cff);
  border-radius: 99px;
  transition: width 0.4s ease;
}
.tier-card .tier-used { font-size: 12px; color: var(--muted); }
.exp-card { border-color: rgba(217, 169, 78, 0.4); background: linear-gradient(160deg, rgba(217,169,78,0.10), rgba(255,255,255,0.02)); }
.exp-card .tier-label { color: var(--gold); }
.exp-chip {
  margin-top: 10px; font-size: 11px; color: var(--gold);
  border: 1px dashed rgba(217, 169, 78, 0.5);
  border-radius: 8px; padding: 5px 8px;
}

/* ---- 创建区 ---- */
.create-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.create-row select { width: 190px; }
.create-row input[type="number"] { width: 110px; }
.create-row .btn { width: auto; margin: 0; }
.code-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 8px;
  margin-top: 14px;
}
.code-item {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--panel-border);
  border-radius: 10px; padding: 8px 10px;
}
.code-item code {
  font-family: var(--mono); font-size: 12.5px; word-break: break-all; line-height: 1.5;
  user-select: all;
}
.code-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ---- 剩余列表 ---- */
.tier-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.tier-tab {
  border: 1px solid var(--panel-border); background: transparent; color: var(--muted);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; cursor: pointer;
  transition: all 0.15s;
}
.tier-tab.active { background: linear-gradient(135deg, #4c74ff, #9a5cff); color: #fff; border-color: transparent; }
.list-note { font-size: 12px; margin: 0 0 12px; }
.code-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 8px; }
.code-list .code-item { background: rgba(0, 0, 0, 0.3); }

/* ---- 页脚 ---- */
.footer {
  max-width: 1080px; margin: 0 auto;
  padding: 10px 20px 26px;
  font-size: 12px; color: var(--muted); line-height: 1.7;
}
.footer .sup-note { color: var(--gold); }

/* ---- Toast ---- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: rgba(10, 16, 28, 0.95);
  border: 1px solid rgba(124, 199, 255, 0.4);
  color: var(--text);
  padding: 10px 18px; border-radius: 10px; font-size: 13px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.5);
  z-index: 99;
}

@media (max-width: 600px) {
  .topbar { flex-direction: column; align-items: flex-start; }
  .tier-cards { grid-template-columns: 1fr 1fr; }
  .code-grid, .code-list { grid-template-columns: 1fr; }
}