:root {
  --bg: #0b0d11;
  --panel: #1d222c;
  --panel-2: #343d52;
  --border: #3c4456;
  --text: #eef1f6;
  --dim: #9aa4b8;
  --accent: #4f8cff;
  --accent-light: #7fb2ff;
  --accent-dark: #33599c;
  --accent-2: #3ddc97;
  --danger: #ff5d6c;
  --warn: #ffd23f;
  font-family: "Segoe UI", Roboto, system-ui, sans-serif;
}

:root[data-theme="light"] {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel-2: #f0f2f6;
  --border: #dfe4ea;
  --text: #1c2530;
  --dim: #6b7787;
  --accent: #2563eb;
  --accent-light: #60a5fa;
  --accent-dark: #1e3a8a;
  --accent-2: #16a34a;
  --danger: #dc2626;
  --warn: #d97706;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }

body.controller {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 1px solid var(--accent-dark);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 { font-size: 18px; margin: 0; font-weight: 600; }
.topbar .dim { color: var(--dim); font-weight: 400; }
.topbar-subtitle { margin: 2px 0 0; font-size: 11.5px; color: var(--dim); }

.topbar-actions { display: flex; gap: 8px; align-items: center; }

.topbar-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  margin-left: 6px;
  padding-left: 12px;
  border-left: 1px solid var(--border);
}
.version-tag { color: var(--dim); font-weight: 400; font-size: 11px; white-space: nowrap; }
.clock { color: var(--text); font-weight: 600; font-size: 13px; font-variant-numeric: tabular-nums; }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  min-width: 30px;
  height: 30px;
  padding: 0 8px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent); }
.file-label { padding: 0 8px; }

/* ---------- Layout ---------- */

.layout {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 12px;
  padding: 12px;
  max-width: 1500px;
  margin: 0 auto;
  align-items: start;
}

@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 12px 14px;
}

.panel h2 { margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--dim); font-weight: 700; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin: 12px 0 6px; }
.panel-head:first-child { margin-top: 0; }
.panel-head h2 { margin: 0; }

/* ---------- Group panels (fieldsets) ---------- */

.group-panel {
  border: 1px solid var(--accent-light);
  border-radius: 10px;
  padding: 8px 10px 9px;
  margin: 0 0 8px;
  background: var(--panel-2);
}

.group-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}
.group-row .group-panel { flex: 1; margin: 0 0 8px; min-width: 0; }
.group-row .group-panel:first-child { flex: 2; }

@media (max-width: 560px) {
  .group-row { flex-direction: column; }
}

.group-panel legend {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--dim);
  font-weight: 700;
  padding: 0 6px;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: flex-end;
}

.field-compact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--dim);
}

.field-compact-inline {
  justify-content: flex-end;
}

.field-compact-spacer {
  visibility: hidden;
  line-height: 1;
}

.field-compact-inline .checkbox-label {
  height: 27px;
  display: flex;
  align-items: center;
}

.w-sm  { width: 76px; }
.w-md  { width: 100px; }
.w-lg  { width: 150px; }
.w-xl  { width: 210px; }
.w-full { width: 100%; }

@media (max-width: 480px) {
  .w-sm, .w-md, .w-lg, .w-xl { width: 100%; }
}

.field-row + .field-row { margin-top: 8px; }

/* ---------- Inputs ---------- */

input, select, textarea, button { font-family: inherit; font-size: 13px; }

input[type="text"], input[type="number"], select {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 8px;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.input-with-btn { display: flex; gap: 4px; }
.input-with-btn input { flex: 1; min-width: 0; }

.btn-icon {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
  padding: 0 8px;
  flex-shrink: 0;
}
.btn-icon:hover { border-color: var(--accent); color: var(--accent); }

.checkbox-label, .radio-label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
}
.checkbox-label input, .radio-label input { accent-color: var(--accent); width: 15px; height: 15px; }

.form-actions { display: flex; gap: 10px; margin-top: 4px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.98); }

.btn--primary { background: var(--accent); border-color: var(--accent); color: #ffffff; font-weight: 700; }
.btn--primary:hover { background: #3f77e0; border-color: #3f77e0; color: #fff; }

.btn--ghost { background: transparent; }

/* ---------- Table ---------- */

.validation-msg { min-height: 14px; font-size: 12px; color: var(--warn); margin: 4px 0; }
.validation-msg.error { color: var(--danger); }

.table-wrap {
  max-height: 280px;
  overflow: auto;
  border: 1px solid var(--accent-light);
  border-radius: 8px;
}

table { width: 100%; border-collapse: collapse; font-size: 12px; }

thead th {
  position: sticky;
  top: 0;
  background: var(--panel-2);
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--dim);
  font-weight: 700;
}

tbody td { padding: 4px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--panel-2); }
tbody tr.selected { background: rgba(79, 140, 255, .16); }
tbody td[data-key]:hover { background: rgba(79, 140, 255, .22); cursor: copy; }

@keyframes rowSavedFlash {
  0% { background: rgba(61, 220, 151, .38); }
  100% { background: transparent; }
}
tbody tr.row-flash { animation: rowSavedFlash 700ms ease-out; }

.row-delete {
  background: transparent;
  border: none;
  color: var(--danger);
  font-size: 14px;
  padding: 2px 6px;
  cursor: pointer;
}
.row-delete:hover { opacity: .7; }

.doc-empty { padding: 10px; color: var(--dim); font-size: 12.5px; text-align: center; }

.hint { color: var(--dim); font-size: 12.5px; margin: 6px 0 0; line-height: 1.4; }
.hint--tight { margin-top: 4px; }

/* ---------- Right panel ---------- */

.mode-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.mode-btn {
  display: block;
  background: var(--panel-2);
  border: 1px solid var(--accent-light);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 10px;
  text-align: center;
  line-height: 1.4;
  cursor: pointer;
  text-decoration: none;
}
.mode-btn small { color: var(--dim); font-weight: 400; }
.mode-btn:hover { border-color: var(--accent); }
.mode-btn.active { background: var(--accent); border-color: var(--accent); color: #ffffff; }
.mode-btn.active small { color: #ffffff; opacity: .85; }
.mode-btn:disabled { opacity: .4; cursor: not-allowed; }
.mode-btn:disabled:hover { border-color: var(--accent-light); }

.mode-warning {
  background: rgba(255, 210, 63, .12);
  border: 1px solid var(--warn);
  color: var(--warn);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12.5px;
  margin-bottom: 8px;
}

.feedback-options {
  padding: 5px 10px;
  border: 1px solid var(--accent-light);
  border-radius: 8px;
  margin-bottom: 8px;
  background: var(--panel-2);
}

.feedback-options-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}

.feedback-options-row .checkbox-label,
.feedback-options-row .radio-label { font-size: 11px; }

.feedback-options .hint { margin-top: 4px; font-size: 9.5px; line-height: 1.35; }
.feedback-options code {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 11px;
}

.result-box {
  border: 1px solid var(--accent-light);
  border-radius: 10px;
  padding: 12px;
  background: var(--panel-2);
}

.qr-wrap { display: flex; justify-content: center; padding: 4px 0 10px; }

#qrcode {
  background: #fff;
  padding: 8px;
  border-radius: 8px;
  display: inline-flex;
}
#qrcode:empty { display: none; }

#resultLink {
  width: 100%;
  min-height: 52px;
  resize: vertical;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px;
}

.result-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }

.status-bar { min-height: 16px; margin-top: 8px; font-size: 12px; color: var(--accent-2); }
.status-bar.error { color: var(--danger); }

.apps-panel { margin-top: 10px; }
.apps-panel .mode-buttons {
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 0;
}
.apps-panel .mode-btn {
  padding: 7px 4px;
  font-size: 11.5px;
  line-height: 1.35;
}
.apps-panel .mode-btn small { font-size: 10px; }

.print-only { display: none; }

@media print {
  body * { visibility: hidden; }
  .print-only, .print-only * { visibility: visible; }
  .print-only { display: block; position: absolute; top: 0; left: 0; width: 100%; padding: 20px; color: #000; }
  #printQr img, #printQr canvas { width: 220px; height: 220px; }
  #printTable { border-collapse: collapse; margin-top: 16px; }
  #printTable td { padding: 4px 10px 4px 0; }
}

/* ---------- Footer ---------- */

.app-footer {
  max-width: 1500px;
  margin: 0 auto;
  padding: 2px 16px 12px;
}
.app-footer p {
  margin: 0;
  font-size: 11px;
  color: var(--dim);
  line-height: 1.5;
  text-align: center;
}