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

:root {
  --bg: #f7f4ef;
  --card: #fff;
  --card2: #f2efe9;
  --border: #e4ded5;
  --border2: #ede8e0;
  --text: #2d2b28;
  --muted: #6e6a62;
  --faded: #9c978d;
  --accent: #cc785c;
  --accent-hover: #b8694f;
  --green: #0d7d5e;
  --red: #c94043;
  --blue: #5a7d9a;
  --amber: #b8852c;
  --r: 14px;
  --rs: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
}

html { font-size: 15px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Card */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.card-top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border2);
}
.card-top h2 { font-size: 0.95rem; font-weight: 600; color: var(--text); }

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.card-icon {
  width: 34px; height: 34px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.ds-icon { background: linear-gradient(135deg, #6366f1, #7c7af5); }
.cf-icon { background: linear-gradient(135deg, #e0713c, #ef8a55); }

.link-ext {
  font-size: 0.74rem;
  color: var(--blue);
  text-decoration: none;
  white-space: nowrap;
  font-weight: 500;
}
.link-ext:hover { color: var(--accent); }

.badge {
  font-size: 0.68rem;
  padding: 0.18rem 0.5rem;
  border-radius: 99px;
  font-weight: 500;
}
.badge-on { background: #e8f5f0; color: var(--green); }
.badge-off { background: #fce8e8; color: var(--red); }

.card-body { padding: 1.1rem; }

/* Skeleton */
.skeleton {
  height: 36px;
  background: linear-gradient(90deg, var(--card2) 25%, #ede9e3 50%, var(--card2) 75%);
  background-size: 200% 100%;
  animation: shim 1.2s infinite;
  border-radius: 6px;
}
@keyframes shim {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Gateway bar */
.gw-bar { display: flex; gap: 0.5rem; margin-bottom: 0.85rem; flex-wrap: wrap; }

.sel, .inp {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--rs);
  padding: 0.55rem 0.7rem;
  font-size: 0.84rem;
  flex: 1;
  min-width: 120px;
  transition: border-color 0.15s;
}
.sel { cursor: pointer; -webkit-appearance: none; }
.sel:focus, .inp:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(204,120,92,0.1); }
.sel option { background: var(--card); }
.sel-sm { flex: 0; min-width: auto; padding: 0.35rem 0.45rem; font-size: 0.74rem; }

.inp { flex: 1; min-width: 140px; }

.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--rs);
  padding: 0.55rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}
.btn:hover { background: var(--accent-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Stats */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}
.stat-box {
  background: var(--card2);
  border: 1px solid transparent;
  border-radius: var(--rs);
  padding: 0.65rem 0.4rem;
  text-align: center;
}
.stat-num { display: block; font-size: 1.1rem; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; }
.stat-num .stat-rmb { display: block; font-size: 0.64rem; color: var(--faded); font-weight: 400; margin-top: 0.1rem; }
.stat-lbl { display: block; font-size: 0.64rem; color: var(--faded); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.15rem; }

.subtitle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1rem 0 0.5rem;
}

/* Model rows */
.model-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border2);
}
.model-row:last-child { border-bottom: none; }
.model-name { flex: 1; color: var(--text); font-weight: 500; }
.model-req { color: var(--faded); font-size: 0.74rem; }
.model-cost { color: var(--green); font-weight: 600; font-size: 0.8rem; margin-left: 0.6rem; }
.rmb { font-size: 0.68rem; color: var(--faded); font-weight: 400; margin-left: 0.35rem; }

/* Log list */
.log-scroll {
  max-height: 460px;
  overflow-y: auto;
}
.log-item {
  background: var(--card2);
  border: 1px solid var(--border2);
  border-radius: var(--rs);
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.4rem;
  font-size: 0.78rem;
  transition: border-color 0.15s;
}
.log-item:hover { border-color: var(--border); }
.log-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.25rem;
}
.log-model { font-weight: 600; color: var(--text); }
.log-prov {
  font-size: 0.68rem;
  color: var(--faded);
  background: var(--card);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border2);
}
.log-time {
  margin-left: auto;
  font-size: 0.66rem;
  color: var(--faded);
  white-space: nowrap;
}
.log-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--muted);
}
.log-cost { color: var(--green); font-weight: 600; }
.log-dur { color: var(--faded); }
.log-cache {
  font-size: 0.6rem;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  background: #fdf3e0;
  color: var(--amber);
}

/* DS balance */
.ds-balance {
  text-align: center;
  padding: 0.5rem 0;
}
.ds-amount {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--green);
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.ds-amount .unit { font-size: 1.05rem; font-weight: 500; }
.ds-detail {
  display: flex;
  justify-content: center;
  gap: 1.75rem;
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
}
.ds-detail span { color: var(--muted); }
.ds-detail b { font-weight: 600; color: var(--text); }

/* Error / empty */
.err {
  background: #fef5f5;
  border: 1px solid #fcd5d5;
  border-radius: var(--rs);
  padding: 0.65rem 0.9rem;
  color: var(--red);
  font-size: 0.8rem;
}
.empty { text-align: center; padding: 1.5rem 0.5rem; color: var(--faded); font-size: 0.84rem; }

/* Mobile */
@media (max-width: 480px) {
  html { font-size: 14px; }
  main { padding: 1rem 0.6rem; gap: 1rem; }
  .ds-amount { font-size: 2.2rem; }
  .ds-detail { flex-wrap: wrap; gap: 0.8rem; }
  .stat-grid { gap: 0.4rem; }
  .stat-box { padding: 0.5rem 0.3rem; }
  .stat-num { font-size: 0.95rem; }
  .log-meta { gap: 0.4rem; }
}