:root {
  --bg: #0a0a0a; --bg2: #0f0f0f; --card: #161616; --border: #262626;
  --text: #fff; --text2: #aaa; --muted: #777;
  --primary: #0ce09f; --primary-d: #08a578;
  --warn: #ffb547; --danger: #ff5e5d; --info: #4ea6ff;
  --nav-w: 240px; --hd-h: 56px;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px; }
a { color: var(--info); text-decoration: none; }
a:hover { text-decoration: underline; }

/* layout */
.app { display: flex; height: 100%; }
.nav { width: var(--nav-w); background: var(--bg2); border-right: 1px solid var(--border); overflow-y: auto; flex-shrink: 0; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.hd { height: var(--hd-h); display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; border-bottom: 1px solid var(--border); background: var(--bg2); }
.body { flex: 1; padding: 24px; overflow-y: auto; }

/* nav */
.nav .brand { padding: 18px 20px; border-bottom: 1px solid var(--border);
  font-weight: 700; font-size: 16px; color: var(--primary); }
.nav .group { padding: 6px 0; }
.nav .group-title { padding: 10px 20px 4px; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.nav .item { display: block; padding: 8px 20px 8px 28px; color: var(--text2); cursor: pointer; user-select: none; font-size: 13px; }
.nav .item:hover { background: rgba(12, 224, 159, 0.05); color: var(--text); }
.nav .item.active { background: rgba(12, 224, 159, 0.08); color: var(--primary); border-left: 3px solid var(--primary); padding-left: 25px; }
.nav .item.disabled { opacity: 0.4; cursor: not-allowed; }
.nav .item .dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--muted); margin-right: 8px; vertical-align: middle; }
.nav .item.active .dot { background: var(--primary); }

/* header */
.hd .title { font-weight: 600; font-size: 16px; }
.hd .who { display: flex; align-items: center; gap: 12px; color: var(--text2); font-size: 13px; }
.hd .totp-on { color: var(--primary); font-size: 11px; padding: 2px 8px; background: rgba(12, 224, 159, 0.1); border-radius: 99px; }
.hd .totp-off { color: var(--warn); font-size: 11px; padding: 2px 8px; background: rgba(255, 181, 71, 0.1); border-radius: 99px; }

/* card */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 16px; }
.card h2 { margin: 0 0 16px; font-size: 16px; }
.card h3 { margin: 16px 0 8px; font-size: 14px; color: var(--text2); }

/* form */
.row { margin-bottom: 14px; }
.row label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
input, textarea, select {
  width: 100%; padding: 9px 12px; background: #1f1f1f; border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; font-size: 13px; font-family: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); }
button {
  padding: 8px 16px; background: var(--primary); color: #000; border: 0; border-radius: 6px;
  font-weight: 600; cursor: pointer; font-size: 13px;
}
button:hover { background: var(--primary-d); }
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.ghost:hover { background: var(--card); }
button.danger { background: var(--danger); color: #fff; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.sm { padding: 6px 10px; font-size: 12px; }

/* status badges */
.badge { display: inline-block; padding: 2px 10px; font-size: 11px; border-radius: 99px; background: var(--border); color: var(--text2); }
.badge.ok { background: rgba(12, 224, 159, 0.15); color: var(--primary); }
.badge.warn { background: rgba(255, 181, 71, 0.15); color: var(--warn); }
.badge.danger { background: rgba(255, 94, 93, 0.15); color: var(--danger); }
.badge.info { background: rgba(78, 166, 255, 0.15); color: var(--info); }

.err { color: var(--danger); font-size: 13px; min-height: 16px; }
.ok { color: var(--primary); font-size: 13px; }
.muted { color: var(--muted); font-size: 12px; }

/* table */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
th { color: var(--muted); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; }
td.mono { font-family: monospace; font-size: 12px; color: var(--text2); }

/* login */
.login-wrap { display: flex; align-items: center; justify-content: center; height: 100%; }
.login-card { width: 380px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 32px; }
.login-card h1 { margin: 0 0 6px; font-size: 22px; }
.login-card .sub { color: var(--muted); margin-bottom: 24px; font-size: 13px; }
.login-card button { width: 100%; padding: 11px; margin-top: 6px; }

/* todo placeholder */
.todo { padding: 60px 20px; text-align: center; color: var(--muted); }
.todo .tag { font-size: 11px; color: var(--primary); padding: 4px 10px; border: 1px solid var(--primary); border-radius: 99px; display: inline-block; margin-bottom: 12px; }
.todo h3 { color: var(--text); margin: 12px 0; }

/* opt grid in recharge methods */
.opt { display: grid; grid-template-columns: 80px 1fr 80px; gap: 12px; align-items: center; padding: 10px 0; border-top: 1px solid var(--border); }
.opt:first-of-type { border-top: 0; }
.opt .alias { font-weight: 600; color: var(--primary); font-size: 13px; }
.opt input { font-family: monospace; font-size: 12px; }
.flash { font-size: 11px; padding-left: 8px; }