:root {
  --bg: #f4f6f8;
  --bg-panel: #ffffff;
  --fg: #1e2a35;
  --fg-muted: #6b7a89;
  --ok: #1e8e3e;
  --warn: #e8a100;
  --err: #d93025;
  --accent: #1a73e8;
  --border: #d7dee5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  font-size: 15px;
}

header.topbar {
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  flex-wrap: wrap;
}

header.topbar .brand {
  font-weight: 700;
  padding: 12px 16px 12px 0;
  white-space: nowrap;
}

nav.tabs { display: flex; flex-wrap: wrap; }

nav.tabs a {
  padding: 14px 14px;
  text-decoration: none;
  color: var(--fg-muted);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

nav.tabs a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

main { padding: 16px; max-width: 1200px; margin: 0 auto; }

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 16px;
}

.scan-field { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.scan-field label { width: 220px; flex-shrink: 0; color: var(--fg); }
.scan-field input[type=text], .scan-field input[type=password] {
  flex: 1;
  font-family: Consolas, monospace;
  font-size: 16px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.status { font-size: 17px; font-weight: 600; padding: 8px 0; }
.status.ok { color: var(--ok); }
.status.warn { color: var(--warn); }
.status.err { color: var(--err); }
.status.muted { color: var(--fg-muted); }
.status.accent { color: var(--accent); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--fg-muted); font-weight: 600; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.pill.ok { background: #e6f4ea; color: var(--ok); }
.pill.warn { background: #fff4e0; color: var(--warn); }
.pill.invalid, .pill.print_error { background: #fdecea; color: var(--err); }
.pill.printed { background: #e6f4ea; color: var(--ok); }

button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.secondary, .btn.secondary { background: #eef1f4; color: var(--fg); }
button.danger, .btn.danger { background: var(--err); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }

.flash { padding: 10px 14px; border-radius: 4px; margin-bottom: 12px; }
.flash.error { background: #fdecea; color: var(--err); }
.flash.info, .flash.accent { background: #e8f0fe; color: var(--accent); }
.flash.ok { background: #e6f4ea; color: var(--ok); }
.flash.warn { background: #fff4e0; color: #8a5a00; }

.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; } }

@media (max-width: 600px) {
  .scan-field { flex-direction: column; align-items: stretch; }
  .scan-field label { width: auto; }
  .scan-field input[type=text], .scan-field input[type=password] { font-size: 18px; padding: 12px; }
  .scan-field button { padding: 12px; font-size: 16px; }
  table { font-size: 13px; }
}

.agent-print-toast {
  position: fixed; top: 16px; right: 16px; z-index: 1000;
  padding: 10px 16px; border-radius: 4px; box-shadow: 0 2px 8px rgba(0,0,0,.15);
  background: #e6f4ea; color: var(--ok);
}
.agent-print-toast.error { background: #fdecea; color: var(--err); }

.agent-status.ok { color: var(--ok); }
.agent-status.warn { color: var(--warn); }

.login-box {
  max-width: 360px;
  margin: 80px auto;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.login-box h1 { font-size: 20px; margin-top: 0; }
.login-box input { width: 100%; padding: 10px; margin-bottom: 10px; border: 1px solid var(--border); border-radius: 4px; }
.login-box button { width: 100%; padding: 10px; }

.kb-layout { display: flex; gap: 16px; }
.kb-topics { width: 260px; flex-shrink: 0; }
.kb-topics a { display: block; padding: 8px 10px; border-radius: 4px; text-decoration: none; color: var(--fg); }
.kb-topics a.active { background: #e8f0fe; color: var(--accent); font-weight: 600; }
.kb-content .warn-block { background: #fff4e0; color: #8a5a00; padding: 10px 12px; border-radius: 4px; margin: 8px 0; }
.kb-content code { background: #eef3fb; color: #0b5394; padding: 2px 6px; border-radius: 3px; }

.mode-toggle { display: flex; gap: 16px; margin-bottom: 12px; }
.mode-toggle label { display: flex; align-items: center; gap: 6px; }

.help-text { color: var(--fg-muted); font-size: 13px; }

/* Инвентаризация */
.new-session-form summary { cursor: pointer; margin-bottom: 12px; }
.new-session-form summary::-webkit-details-marker { display: none; }
.new-session-form[open] summary { margin-bottom: 16px; }

.filter-row th { padding: 4px 8px; }
.filter-row input {
  width: 100%;
  font-size: 12px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-sizing: border-box;
}

.product-group {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 10px;
}
.product-group summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.product-group summary::-webkit-details-marker { display: none; }
.product-group summary::before { content: "▸"; color: var(--fg-muted); }
.product-group[open] summary::before { content: "▾"; }
.product-name { font-weight: 600; margin-right: 4px; }
.pill.cell-pill { background: #e8f0fe; color: var(--accent); }
.product-code { color: var(--fg-muted); font-weight: 400; }
.product-group-body { padding: 0 14px 14px; }
.code-cell { font-family: Consolas, monospace; font-size: 13px; word-break: break-all; }
.copy-all-btn { margin-bottom: 10px; }

/* Конструктор этикеток */
.ld-layout { display: flex; gap: 16px; align-items: flex-start; margin-top: 12px; flex-wrap: wrap; }
.ld-palette { width: 200px; flex-shrink: 0; display: flex; flex-direction: column; gap: 6px; }
.ld-palette button { text-align: left; }
.ld-canvas-outer {
  flex: 1;
  min-width: 300px;
  overflow: auto;
  background: #dfe3e8;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
}
.ld-canvas {
  position: relative;
  background-color: #ffffff;
  background-image: linear-gradient(to right, #eeeeee 1px, transparent 1px),
                     linear-gradient(to bottom, #eeeeee 1px, transparent 1px);
  border: 1px solid #333333;
}
.ld-side { width: 300px; flex-shrink: 0; }
.ld-element {
  position: absolute;
  border: 2px solid #555555;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  cursor: move;
  background: rgba(255, 255, 255, 0.6);
  user-select: none;
  padding: 2px;
  box-sizing: border-box;
}
.ld-element.selected { border-width: 3px; }
.ld-handle {
  position: absolute;
  width: 9px;
  height: 9px;
  background: #ffffff;
  border: 1px solid #000000;
  box-sizing: border-box;
}
#ld-preview img { max-width: 100%; }