/* iot-platform UI — dark, dependency-free */
:root {
  --bg: #0e1116;
  --bg2: #151a22;
  --card: #1a212c;
  --border: #2a3342;
  --text: #dce3ec;
  --dim: #8b98ab;
  --accent: #4da3ff;
  --ok: #3ecf8e;
  --warn: #f5a623;
  --err: #ff6b6b;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }

.topbar {
  display: flex; align-items: center; gap: 18px;
  padding: 10px 22px; background: var(--bg2); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: 0.4px; }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.topbar nav a { color: var(--text); opacity: 0.85; }
.topbar nav a:hover { opacity: 1; }
.who { color: var(--dim); font-size: 13px; }
.linklike {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font: inherit; padding: 0;
}
.inline { display: inline; }
.inline form, form.inline { display: inline; }

.container { max-width: 1100px; margin: 26px auto; padding: 0 18px 60px; }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.page-head h1 { font-size: 22px; margin: 0; }
.crumb { margin-right: 6px; font-weight: 400; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px; margin-bottom: 16px;
}
.card h2 { font-size: 15px; margin: 0 0 10px; text-transform: uppercase; letter-spacing: 0.6px; color: var(--dim); }
.card.empty { padding: 34px; text-align: center; color: var(--dim); }
.danger-zone { border-color: rgba(255, 107, 107, 0.45); }

.badge {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge.ok { background: rgba(62, 207, 142, 0.15); color: var(--ok); }
.badge.off { background: rgba(139, 152, 171, 0.15); color: var(--dim); }
.badge.warn { background: rgba(245, 166, 35, 0.15); color: var(--warn); }

.flash {
  max-width: 1100px; margin: 14px auto 0; padding: 10px 16px; border-radius: 8px; font-size: 14px;
  border: 1px solid var(--border); background: var(--bg2);
}
.flash-success { border-color: rgba(62, 207, 142, 0.5); }
.flash-error { border-color: rgba(255, 107, 107, 0.5); color: var(--err); }
.flash-info { border-color: rgba(77, 163, 255, 0.4); }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.tile { display: block; color: var(--text); }
.tile:hover { text-decoration: none; border-color: var(--accent); }
.tile-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tile-name { font-weight: 600; }

table { border-collapse: collapse; width: 100%; }
table.kv td { padding: 3px 8px 3px 0; vertical-align: top; }
table.kv.wide { max-width: 560px; }
table.kv td.num { font-family: var(--mono); text-align: right; white-space: nowrap; }
table.data { width: 100%; }
table.data th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--dim); border-bottom: 1px solid var(--border); padding: 6px 8px;
}
table.data td { padding: 6px 8px; border-bottom: 1px solid rgba(42, 51, 66, 0.6); font-size: 14px; vertical-align: top; }
table.data tr:last-child td { border-bottom: none; }
.c { text-align: center; }
.table-scroll { overflow-x: auto; }

.dim { color: var(--dim); }
.small { font-size: 12px; }

label { display: block; margin: 8px 0; font-size: 13px; color: var(--dim); }
label.check { display: inline-flex; align-items: center; gap: 6px; margin-right: 14px; }
input, select, textarea {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 7px 9px; font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 1px solid var(--accent); }
input.narrow { width: 74px; }
textarea { width: 100%; resize: vertical; }
.inline-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; }
.inline-form label { margin: 0; }

button {
  background: var(--bg2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 7px 14px; font: inherit; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #08121f; font-weight: 600; }
button.danger { background: transparent; border-color: var(--err); color: var(--err); }
button.danger:hover { background: rgba(255, 107, 107, 0.12); }

.admin-nav { display: flex; gap: 16px; margin-bottom: 16px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.admin-nav a { color: var(--dim); }
.admin-nav a.active, .admin-nav a:hover { color: var(--text); text-decoration: none; }

.login-wrap { display: flex; justify-content: center; padding-top: 8vh; }
.login-card { width: 340px; }
.login-card h1 { font-size: 18px; margin: 0 0 12px; }

.chart-block { margin: 14px 0 22px; }
.chart-title { font-size: 13px; color: var(--dim); margin-bottom: 4px; }
.chart-wrap { height: 220px; }
canvas.chart { width: 100%; height: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
.frame-buttons { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.frame-btn.active { background: var(--accent); border-color: var(--accent); color: #08121f; font-weight: 600; }

.sample { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px; overflow-x: auto; white-space: pre-wrap; }

.field-editor input, .field-editor select { width: 100%; padding: 4px 6px; font-size: 13px; }
.field-editor th { font-size: 11px; }