:root {
  --bg: #0e1620;
  --panel: #16212e;
  --panel-2: #1c2937;
  --line: #2a3a4d;
  --text: #e6edf5;
  --muted: #8ba0b5;
  --accent: #4aa3ff;
  --accent-2: #1a9fff;
  --good: #45c98a;
  --warn: #ffb020;
  --bad: #ff5c6c;
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, #1a2836 0%, var(--bg) 60%);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, sans-serif;
  min-height: 100%;
}

.hidden { display: none !important; }

/* ---------- layout ---------- */
.view { padding: 24px; max-width: 1000px; margin: 0 auto; }
.center { min-height: 100vh; display: grid; place-items: center; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  width: min(380px, 92vw);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.panel h1 { margin: 0 0 4px; font-size: 22px; }
.hint { color: var(--muted); font-size: 13px; margin: 0; }
.hint.small { font-size: 12px; }
.hint strong { color: var(--warn); }
.form-error {
  color: #ffd9dd;
  border: 1px solid var(--bad);
  background: rgba(255, 92, 108, .08);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 13px;
  margin: 0;
}

label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
input, textarea {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; }

button {
  cursor: pointer;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
}
.primary { background: var(--accent-2); color: #fff; }
.primary:hover { background: var(--accent); }
.ghost { background: transparent; color: var(--muted); border-color: var(--line); }
.ghost:hover { color: var(--text); border-color: var(--accent); }
.icon-btn {
  background: transparent; border: 1px solid var(--line);
  color: var(--muted); padding: 4px 10px; font-size: 12px;
}
.icon-btn:hover:not(:disabled) { color: var(--text); border-color: var(--accent); }
.icon-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px; gap: 12px; flex-wrap: wrap;
}
.topbar h1 { font-size: 20px; margin: 0; }
.actions { display: flex; gap: 8px; }

.empty { color: var(--muted); text-align: center; padding: 48px 12px; }
.empty code { color: var(--accent); }

/* ---------- account grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.meta { min-width: 0; }
.label { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.username { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.code-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.code {
  font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 30px; font-weight: 700; letter-spacing: 6px;
  color: var(--good);
}
.code-bad { color: var(--bad); font-size: 14px; letter-spacing: 0; font-weight: 500; }

.progress { height: 4px; background: var(--panel-2); border-radius: 4px; overflow: hidden; }
.bar { height: 100%; width: 100%; background: var(--accent); transition: width 1s linear; }
.bar.warn { background: var(--warn); }

/* ---------- dialog ---------- */
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  width: min(440px, 92vw);
}
dialog::backdrop { background: rgba(0,0,0,.6); }
dialog h2 { margin: 0 0 16px; }
dialog form { display: flex; flex-direction: column; gap: 12px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; top: 16px; left: 50%; transform: translateX(-50%);
  padding: 10px 18px; border-radius: 10px; font-size: 14px; z-index: 100;
  border: 1px solid var(--line); background: var(--panel-2); color: var(--text);
  max-width: 90vw;
}
.toast.ok { border-color: var(--good); }
.toast.err { border-color: var(--bad); color: #ffd9dd; }