/* CMNS — one small stylesheet, no framework, no JS. Mobile-first. */
:root {
  --bg: #f6f7f9; --card: #fff; --ink: #1a222c; --muted: #66707c;
  --brand: #0b7a5c; --brand-ink: #fff; --line: #e3e7ec;
  --warn-bg: #fff7e6; --warn-ink: #8a5a00; --err-bg: #fdecec; --err-ink: #9a1c1c;
  --ok-bg: #e8f6ef; --ok-ink: #0b6b47;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 12px 14px 48px; }
a { color: var(--brand); }
h1 { font-size: 1.35rem; margin: .8em 0 .4em; }
h2 { font-size: 1.1rem; margin: 1.2em 0 .4em; }

nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--brand); color: var(--brand-ink);
  padding: 6px 10px; font-size: .95rem;
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
}
.nav-bar { display: flex; align-items: center; }
.nav-links {
  display: flex; gap: 2px; overflow-x: auto;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a { flex: none; }
nav .logo { font-weight: 700; margin-right: 8px; letter-spacing: .5px; }
nav a, nav button { color: var(--brand-ink); text-decoration: none; padding: 8px 10px; border-radius: 6px; }
nav a:hover, nav button:hover { background: rgba(255,255,255,.15); }
nav button { background: none; border: 0; font: inherit; cursor: pointer; }
nav .right { margin-left: auto; opacity: .9; }
@media (min-width: 560px) {
  nav { display: flex; align-items: center; }
  .nav-bar { display: contents; }
  .nav-bar .right { order: 1; }
}

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; margin: 12px 0;
}
.big { font-size: 1.6rem; font-weight: 700; }
.muted { color: var(--muted); font-size: .92rem; }
.tier {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-weight: 600; font-size: .9rem; background: var(--ok-bg); color: var(--ok-ink);
}
.tier.lapsed, .tier.guest { background: #eef0f3; color: var(--muted); }
.tier.borrowing { background: var(--warn-bg); color: var(--warn-ink); }

.msg { padding: 10px 14px; border-radius: 10px; margin: 10px 0; }
.msg.success, .msg.info { background: var(--ok-bg); color: var(--ok-ink); }
.msg.warning { background: var(--warn-bg); color: var(--warn-ink); }
.msg.error { background: var(--err-bg); color: var(--err-ink); }
.warnbox { background: var(--warn-bg); color: var(--warn-ink); border-radius: 10px; padding: 10px 14px; margin: 10px 0; }

form p { margin: 10px 0; }
label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: 3px; }
input[type=text], input[type=password], input[type=number], select {
  width: 100%; padding: 10px; font-size: 1rem;
  border: 1px solid var(--line); border-radius: 8px; background: #fff;
}
.helptext { display: block; color: var(--muted); font-size: .85rem; }
ul.errorlist { color: var(--err-ink); margin: 4px 0; padding-left: 18px; font-size: .9rem; }

button, .btn {
  display: inline-block; background: var(--brand); color: var(--brand-ink);
  border: 0; border-radius: 10px; padding: 11px 18px; font-size: 1rem;
  font-weight: 600; cursor: pointer; text-decoration: none;
}
button.secondary, .btn.secondary { background: #eef0f3; color: var(--ink); }
button.danger, .btn.danger { background: var(--err-ink); }
form.inline { display: inline; }

table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }

.qr { background: #fff; padding: 10px; border-radius: 12px; text-align: center; }
.qr svg { width: 100%; max-width: 280px; height: auto; }
.creds { font-family: ui-monospace, Menlo, monospace; background: #eef0f3; padding: 8px 12px; border-radius: 8px; font-size: 1.05rem; }
.bar { background: #eef0f3; border-radius: 999px; height: 10px; overflow: hidden; margin: 8px 0 12px; }
.bar span { display: block; height: 100%; background: var(--brand); }

.grid { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 6px; }
.grid .towercol { text-align: center; }
.grid .cell {
  width: 46px; height: 26px; border-radius: 6px; margin: 3px auto;
  background: #dfe3e8; color: #99a1ab; font-size: .75rem; line-height: 26px;
}
.grid .cell.lit { background: var(--brand); color: #fff; font-weight: 600; }
.grid .cell.reported { background: var(--warn-bg); color: var(--warn-ink); }

.steps li { margin: .6em 0; }
.screenshot {
  background: #eef0f3; border: 1px dashed #c4ccd4; border-radius: 8px;
  color: var(--muted); text-align: center; padding: 22px 10px; font-size: .85rem; margin: 6px 0;
}
footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 20px 0; }