:root {
  --bg: #f3efe6;
  --ink: #1c2a24;
  --muted: #5f6f66;
  --card: #fffdf8;
  --line: #d7cfc0;
  --accent: #0f6b4c;
  --accent-2: #c45c26;
  --ok: #166534;
  --err: #9b2c2c;
  --shadow: 0 10px 30px rgba(28, 42, 36, 0.08);
  --font: "Segoe UI", "Trebuchet MS", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #dceee4 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #f3d9c4 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255,253,248,0.9);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; gap: .75rem; align-items: center; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--accent), #184e3a);
  color: #fff; font-weight: 700;
}
.brand small { display: block; color: var(--muted); }
.topbar nav { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }

.container { width: min(1100px, 92%); margin: 1.5rem auto 3rem; }
.footer { text-align: center; color: var(--muted); padding: 1.5rem; font-size: .9rem; }

h1 { margin: 0 0 1rem; font-size: 1.7rem; }
h2 { margin: 0 0 .75rem; font-size: 1.15rem; }
.muted { color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}
.auth-card { max-width: 420px; margin: 3rem auto; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: var(--shadow);
}
.stat span { color: var(--muted); display: block; }
.stat strong { font-size: 1.6rem; }

label { display: grid; gap: .35rem; margin-bottom: .9rem; font-weight: 600; }
input, textarea, select, button {
  font: inherit;
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .7rem .8rem;
  background: #fff;
}
.form-grid fieldset {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin: 0 0 1rem;
}
.form-grid legend { padding: 0 .4rem; color: var(--muted); }
.check { display: flex; align-items: center; gap: .5rem; font-weight: 600; }
.check input { width: auto; }

.btn, button.btn, .btn-outline {
  display: inline-block;
  border: none;
  border-radius: 999px;
  padding: .7rem 1.2rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }

.alert { padding: .8rem 1rem; border-radius: 10px; margin-bottom: 1rem; }
.alert.ok { background: #e7f6ee; color: #14532d; }
.alert.err { background: #fde8e8; color: #9b2c2c; }

.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .65rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 700; }
.preview { max-width: 280px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge { padding: .15rem .5rem; border-radius: 999px; font-size: .8rem; background: #eee; }
.badge.sent { background: #dcfce7; color: #166534; }
.badge.failed { background: #fee2e2; color: #991b1b; }
.badge.queued { background: #fef9c3; color: #854d0e; }

.steps { margin: 0; padding-left: 1.2rem; }
.steps li { margin: 0 0 .75rem; line-height: 1.45; }
.flow {
  background: #efeae0;
  border-radius: 12px;
  padding: 1rem;
  line-height: 1.7;
  font-weight: 600;
}
.qr-wrap { margin: 1rem 0; min-height: 80px; }
.device-status { margin: .75rem 0 1rem; font-weight: 700; }
.row-actions { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.kv { list-style: none; padding: 0; margin: 0; }
.kv li { display: grid; grid-template-columns: 180px 1fr; gap: .5rem; padding: .4rem 0; border-bottom: 1px solid var(--line); }
code { background: #efeae0; padding: .15rem .4rem; border-radius: 6px; word-break: break-all; }

@media (max-width: 720px) {
  .kv li { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; }
}