/* PowerPanel — industrial HMI base styles (shared by login, admin and main panel) */
:root {
  --panel: #c0c4c8;
  --panel-light: #f4f6f8;
  --panel-dark: #6b7076;
  --panel-darker: #3a3e42;
  --header: #1a3a8f;
  --header-text: #ffffff;
  --lcd-bg: #0f1a12;
  --lcd-text: #7dff9a;
  --ok: #1fa33a;
  --warn: #e0a000;
  --alarm: #d42020;
  --text: #111;
  --desk: #8a9096;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--desk);
  color: var(--text);
  font-family: Tahoma, Verdana, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.35;
}

/* Beveled raised panel */
.panel {
  background: var(--panel);
  border: 2px solid;
  border-color: var(--panel-light) var(--panel-darker) var(--panel-darker) var(--panel-light);
  box-shadow: inset 1px 1px 0 #fff, inset -1px -1px 0 var(--panel-dark);
}
.panel > h2, .panel-title {
  margin: 0;
  padding: 6px 12px;
  background: var(--header);
  color: var(--header-text);
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.panel-body { padding: 14px 16px; }

/* Sunken inset */
.inset {
  border: 2px solid;
  border-color: var(--panel-darker) var(--panel-light) var(--panel-light) var(--panel-darker);
  background: #e8eaec;
  padding: 8px 10px;
}

/* LCD readout */
.lcd {
  display: inline-block;
  min-width: 6ch;
  padding: 4px 10px;
  background: var(--lcd-bg);
  color: var(--lcd-text);
  font-family: "Consolas", "Lucida Console", "Courier New", monospace;
  font-size: 24px;
  text-align: right;
  border: 2px solid;
  border-color: var(--panel-darker) var(--panel-light) var(--panel-light) var(--panel-darker);
}

/* Buttons */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: bold;
  padding: 10px 22px;
  min-height: 48px;
  color: var(--text);
  background: var(--panel);
  border: 2px solid;
  border-color: var(--panel-light) var(--panel-darker) var(--panel-darker) var(--panel-light);
  cursor: pointer;
  text-decoration: none;
  text-transform: uppercase;
}
.btn:active { border-color: var(--panel-darker) var(--panel-light) var(--panel-light) var(--panel-darker); }
.btn:focus-visible { outline: 3px dashed var(--header); outline-offset: 2px; }
.btn-primary { background: #2f56c0; color: #fff; }
.btn-danger { background: #b02020; color: #fff; }

input[type=password], input[type=text] {
  font: inherit;
  font-size: 22px;
  width: 100%;
  padding: 10px;
  border: 2px solid;
  border-color: var(--panel-darker) var(--panel-light) var(--panel-light) var(--panel-darker);
  background: #fff;
}

/* Lamps: always paired with a text label */
.lamp {
  display: inline-block;
  width: 18px; height: 18px;
  border-radius: 50%;
  vertical-align: -3px;
  margin-right: 8px;
  border: 2px solid var(--panel-darker);
  background: #555;
}
.lamp.ok { background: radial-gradient(circle at 35% 35%, #9dff9d, var(--ok)); }
.lamp.warn { background: radial-gradient(circle at 35% 35%, #ffe38a, var(--warn)); }
.lamp.alarm { background: radial-gradient(circle at 35% 35%, #ff9a9a, var(--alarm)); }

.msg { padding: 10px 12px; margin: 0 0 14px; font-weight: bold; border: 2px solid var(--panel-darker); }
.msg.ok { background: #d8f5dc; }
.msg.error { background: #ffd9d9; }

/* Small-page layout (login / admin) */
.page { max-width: 720px; margin: 40px auto; padding: 0 16px; }
.page-narrow { max-width: 440px; }
.titlebar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px; margin-bottom: 14px;
  background: linear-gradient(#24459e, #142c70);
  color: #fff; font-weight: bold; font-size: 20px;
  border: 2px solid; border-color: #5f7fd0 #0a1a45 #0a1a45 #5f7fd0;
}
.titlebar a, .titlebar button { color: #fff; }
table.kv { border-collapse: collapse; width: 100%; }
table.kv th, table.kv td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--panel-dark); vertical-align: top; }
table.kv th { width: 40%; font-weight: normal; }
.row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.row form { margin: 0; }
.muted { color: #333; font-size: 15px; }
label { display: block; font-weight: bold; margin-bottom: 6px; }
label.check { font-weight: normal; font-size: 15px; }
.page > .panel + .panel { margin-top: 16px; }
.nav { display: flex; gap: 16px; align-items: center; font-size: 16px; }
.nav form { margin: 0; }
.linkbtn { font: inherit; color: #fff; background: none; border: 0; padding: 0; text-decoration: underline; cursor: pointer; }