:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e3e6ea;
  --ink: #171a1f;
  --ink-2: #5b636e;
  --ink-3: #8b93a0;
  --accent: #2f6df6;
  --accent-ink: #ffffff;
  --app-axis: #2f6df6;
  --cloud-axis: #12a594;
  --danger: #e5484d;
  --ok: #30a46c;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20,24,31,.06), 0 4px 16px rgba(20,24,31,.05);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  --sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1116;
    --surface: #171b22;
    --surface-2: #1e232c;
    --border: #2a3039;
    --ink: #e8ebef;
    --ink-2: #a3abb7;
    --ink-3: #6f7885;
    --accent: #4d82ff;
    --app-axis: #4d82ff;
    --cloud-axis: #2dd4bf;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { margin: 0; letter-spacing: -0.01em; }
button { font: inherit; cursor: pointer; }
a { color: var(--accent); }

.hidden { display: none !important; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 22px;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 15px; }
.brand .dot { width: 11px; height: 11px; border-radius: 3px;
  background: linear-gradient(135deg, var(--app-axis), var(--cloud-axis)); }
.brand small { color: var(--ink-3); font-weight: 500; }
.spacer { flex: 1; }
.who { color: var(--ink-2); font-size: 13px; }
select, .btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
  border-radius: 9px; padding: 7px 12px; font-size: 14px;
}
select { padding-right: 26px; }
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 9px; font-size: 13px; border-radius: 7px; }
.btn:disabled { opacity: .5; cursor: default; }

/* Layout */
main { max-width: 1080px; margin: 0 auto; padding: 26px 22px 80px; }

/* Login */
.login {
  min-height: 70vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 18px; text-align: center;
}
.login h1 { font-size: 26px; }
.login p { color: var(--ink-2); max-width: 34ch; }

/* Axis sections */
.axis-head { display: flex; align-items: baseline; gap: 10px; margin: 30px 0 12px; }
.axis-head h2 { font-size: 18px; }
.axis-head .tag {
  font: 600 11px/1 var(--sans); letter-spacing: .04em; text-transform: uppercase;
  padding: 4px 8px; border-radius: 999px; color: #fff;
}
.axis-head .tag.app { background: var(--app-axis); }
.axis-head .tag.cloud { background: var(--cloud-axis); }
.axis-head .sub { color: var(--ink-3); font-size: 13px; }

.tiers { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }

.tier {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.tier > header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px; border-bottom: 1px solid var(--border); background: var(--surface-2);
}
.tier header .name {
  font-weight: 700; font-family: var(--mono); font-size: 14px;
  background: transparent; border: 1px solid transparent; color: var(--ink);
  border-radius: 6px; padding: 3px 6px; min-width: 4ch;
}
.tier header .name:focus { border-color: var(--border); background: var(--bg); outline: none; }
.tier header .order { color: var(--ink-3); font-size: 12px; }
.tier .body { padding: 12px 14px; }
.tier .grp-label { font: 600 11px/1 var(--sans); letter-spacing: .05em; text-transform: uppercase;
  color: var(--ink-3); margin: 4px 0 8px; }

.cap { display: flex; align-items: center; gap: 9px; padding: 5px 0; }
.cap input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }
.cap label { font-size: 14px; }
.cap.off label { color: var(--ink-3); }

.limits { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border);
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.limit label { display: block; font-size: 11px; color: var(--ink-3); margin-bottom: 3px; }
.limit input { width: 100%; border: 1px solid var(--border); background: var(--bg);
  color: var(--ink); border-radius: 7px; padding: 6px 8px; font: 500 14px var(--mono); }
.limit .hint { font-size: 10px; color: var(--ink-3); }

.add-tier { border: 1px dashed var(--border); border-radius: var(--radius);
  background: transparent; color: var(--ink-2); min-height: 90px; font-weight: 600; }
.add-tier:hover { background: var(--surface-2); color: var(--ink); }

/* Toolbar under sections */
.publishbar {
  position: sticky; bottom: 0; margin-top: 26px;
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.publishbar .meta { color: var(--ink-2); font-size: 13px; }
.publishbar .meta b { color: var(--ink); }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px;
  font-size: 14px; opacity: 0; transition: .25s; pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--danger); color: #fff; }
.toast.ok { background: var(--ok); color: #fff; }

.dirty-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }