:root {
  --bg: #0f1720;
  --panel: #182231;
  --border: #2a3648;
  --text: #e6edf3;
  --muted: #8b98a8;
  --accent: #3b82f6;
  --danger: #ef4444;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 0.85em; }
.error { color: var(--danger); font-size: 0.9em; }

/* ---------- Login ---------- */

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-card {
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.auth-card h1 { font-size: 1.2em; margin: 0 0 8px; }

.auth-card label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9em; }

input, select, button {
  font: inherit;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0d141d;
  color: var(--text);
}

button {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  cursor: pointer;
}

button.secondary { background: transparent; border-color: var(--border); }

.btn-link {
  display: inline-block;
  font: inherit;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
}

.btn-link:hover { border-color: var(--accent); }

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

/* ---------- Dashboard ---------- */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.topbar h1 { font-size: 1.1em; margin: 0; }
.topbar > div { display: flex; align-items: center; gap: 12px; }

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  padding: 16px 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.panel h2 { margin-top: 0; font-size: 1em; }

.install-guide-panel { margin: 16px 24px 0; }

.install-guide-steps { margin: 10px 0 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }

.collapsible-toggle { cursor: pointer; user-select: none; }

.architecture-panel { margin: 16px 24px 0; }

.architecture-pre {
  margin: 10px 0 0;
  padding: 12px;
  background: #0d141d;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow-x: auto;
  line-height: 1.5;
}

.account-panel { margin: 16px 24px 0; }

.stacked-form { display: flex; flex-direction: column; gap: 10px; max-width: 320px; }
.stacked-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9em; }

.unclaimed-panel { margin: 16px 24px 0; }

.unclaimed-list { margin-top: 10px; display: flex; flex-direction: column; gap: 10px; }

.unclaimed-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.unclaimed-card .claim-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.unclaimed-card .claim-form input, .unclaimed-card .claim-form select { width: auto; }

.user-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
}

.user-card-header { display: flex; justify-content: space-between; align-items: center; }

.device-list { margin-top: 8px; display: flex; flex-direction: column; gap: 4px; }

.device-row {
  display: flex;
  align-items: stretch;
  gap: 6px;
  background: #0d141d;
  border: 1px solid var(--border);
}

.device-row.selected { border-color: var(--accent); }

.device-select {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  color: inherit;
  text-align: left;
}

.device-delete {
  background: none;
  border: none;
  color: var(--danger);
  padding: 8px 10px;
}

.device-delete:hover { background: rgba(239, 68, 68, 0.12); }

.unclaimed-card .device-delete { border: 1px solid var(--border); border-radius: 6px; }

.mode-row { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }

.apps-list {
  margin-top: 12px;
  max-height: 360px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.app-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 6px 8px;
  border-radius: 6px;
}

.app-row:hover { background: #0d141d; }

.history-table { width: 100%; border-collapse: collapse; margin-top: 12px; }
.history-table th, .history-table td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9em;
}