/* Material Design-inspired styles for tools/ble-install (mobile-first).
   Distinct visual theme from ble_provisioner.html's Bootstrap 5 dark theme. */

:root {
  --md-brand-blue: #2B5BB5;
  --md-brand-blue-variant: #1E4489;
  --md-primary: #FFE16E;
  --md-primary-variant: #E0BE00;
  --md-secondary: #2B5BB5;
  --md-secondary-variant: #1E4489;
  --md-surface: #ffffff;
  --md-background: #f8f8f8;
  --md-error: #b00020;
  --md-on-primary: #1c1c1c;
  --md-on-secondary: #ffffff;
  --md-on-surface: #1c1c1c;
  --md-on-surface-muted: #5f6368;
  --md-outline: #dadce0;
  --md-success: #2e7d32;
  --md-elevation-1: 0 1px 2px rgba(0,0,0,.20), 0 1px 3px 1px rgba(0,0,0,.10);
  --md-elevation-2: 0 1px 2px rgba(0,0,0,.24), 0 2px 6px 2px rgba(0,0,0,.12);
  --md-radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Roboto', 'Segoe UI', system-ui, sans-serif;
  background: var(--md-background);
  color: var(--md-on-surface);
}

.md-appbar {
  background: var(--md-brand-blue);
  color: var(--md-on-secondary);
  padding: 1rem 1rem;
  box-shadow: var(--md-elevation-2);
}
.md-appbar h1 { font-size: 1.15rem; margin: 0; font-weight: 500; }
.md-appbar p { margin: .15rem 0 0; font-size: .8rem; opacity: .85; }
.md-appbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.md-locale-select {
  background: transparent;
  color: var(--md-on-secondary);
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 4px;
  padding: .3rem .5rem;
  font-size: .8rem;
  flex-shrink: 0;
}
.md-locale-select option { color: var(--md-on-surface); }

.md-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
  padding-bottom: 5.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.md-card {
  background: var(--md-surface);
  border-radius: var(--md-radius);
  border-left: 4px solid var(--md-brand-blue);
  box-shadow: var(--md-elevation-1);
  padding: 1rem 1.1rem;
  transition: border-color .2s;
}
.md-card.md-card-success { border-left-color: var(--md-success); }
.md-card.md-card-error { border-left-color: var(--md-error); }
.md-card.md-card-idle { border-left-color: var(--md-outline); }
.md-card h2 {
  font-size: .95rem;
  font-weight: 500;
  margin: 0 0 .75rem;
  color: var(--md-secondary-variant);
  text-transform: uppercase;
  letter-spacing: .03em;
}

.md-field { margin-bottom: .85rem; }
.md-field label {
  display: block;
  font-size: .78rem;
  color: var(--md-on-surface-muted);
  margin-bottom: .3rem;
}
.md-field input[type=password],
.md-field input[type=text],
.md-field select {
  width: 100%;
  padding: .6rem .7rem;
  border: 1px solid var(--md-outline);
  border-radius: 8px;
  font-size: .95rem;
  background: var(--md-surface);
  color: var(--md-on-surface);
}
.md-field input:focus, .md-field select:focus {
  outline: none;
  border-color: var(--md-brand-blue);
  box-shadow: 0 0 0 3px rgba(43,91,181,.15);
}

.md-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: none;
  border-radius: 999px;
  padding: .7rem 1.3rem;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: var(--md-elevation-1);
  transition: background .15s, opacity .15s, box-shadow .15s;
  width: 100%;
}
.md-btn:hover:not(:disabled) { background: var(--md-primary-variant); }
.md-btn:disabled { opacity: .4; cursor: not-allowed; box-shadow: none; }
.md-btn.md-btn-secondary { background: var(--md-secondary); color: var(--md-on-secondary); }
.md-btn.md-btn-outline {
  background: transparent;
  color: var(--md-primary-variant);
  border: 1px solid var(--md-primary-variant);
  box-shadow: none;
}
.md-btn.md-btn-danger { background: var(--md-error); color: var(--md-on-secondary); }
.md-btn-row { display: flex; gap: .6rem; flex-wrap: wrap; }
.md-btn-row .md-btn { width: auto; flex: 1 1 auto; min-width: 140px; }

.md-checkbox-row {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  margin: .6rem 0;
}
.md-checkbox-row input { width: 18px; height: 18px; }

/* Tab selector (e.g. Install / Client role) — underlined active tab, matching
   the brand blue used for structural/navigation accents. */
.md-tabs {
  display: flex;
  gap: 1.5rem;
  border-bottom: 1px solid var(--md-outline);
  margin-bottom: 1rem;
}
.md-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: .55rem .1rem;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--md-on-surface-muted);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.md-tab.active { color: var(--md-brand-blue); border-bottom-color: var(--md-brand-blue); }

/* iOS-style toggle switch, wraps a plain checkbox input (no JS changes needed). */
.md-switch-row { display: flex; align-items: center; gap: .75rem; margin: .6rem 0; }
.md-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.md-switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.md-switch-track {
  position: absolute;
  inset: 0;
  background: var(--md-outline);
  border-radius: 999px;
  transition: background .15s;
  pointer-events: none;
}
.md-switch-track::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .15s;
  box-shadow: var(--md-elevation-1);
}
.md-switch input:checked + .md-switch-track { background: var(--md-brand-blue); }
.md-switch input:checked + .md-switch-track::before { transform: translateX(20px); }
.md-switch-label { font-size: .85rem; }

/* Floating action button for the primary "start" action (Scan & connect). */
.md-fab {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border: none;
  border-radius: 999px;
  padding: .9rem 1.5rem;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: var(--md-elevation-2);
  transition: background .15s, box-shadow .15s;
}
.md-fab:hover:not(:disabled) { background: var(--md-primary-variant); }
.md-fab:disabled { opacity: .4; cursor: not-allowed; }

.md-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .35rem .8rem;
  font-size: .85rem;
}
.md-info-grid .md-lbl { color: var(--md-on-surface-muted); }
.md-info-grid .md-val { font-family: 'Roboto Mono', monospace; word-break: break-all; }

.md-banner {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: #fdecea;
  color: var(--md-error);
  border-radius: 8px;
  padding: .6rem .8rem;
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: .75rem;
}

.md-status-row { display: flex; align-items: center; gap: .5rem; font-size: .85rem; margin-bottom: .5rem; }
.md-dot { width: 10px; height: 10px; border-radius: 50%; background: #9e9e9e; flex-shrink: 0; }
.md-dot.connected { background: var(--md-success); }
.md-dot.error { background: var(--md-error); }

.md-log {
  background: #0f1115;
  color: #c9d1d9;
  border-radius: 8px;
  padding: .6rem .7rem;
  font-family: 'Roboto Mono', monospace;
  font-size: .72rem;
  line-height: 1.5;
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.log-ok { color: #4caf50; }
.log-err { color: #ef5350; }
.log-info { color: #64b5f6; }
.log-dim { color: #8b949e; }

.hidden { display: none !important; }

.md-unsupported {
  max-width: 480px;
  margin: 3rem auto;
  padding: 1.5rem;
  text-align: center;
}
.md-unsupported h1 { color: var(--md-error); font-size: 1.1rem; }

@media (min-width: 600px) {
  .md-container { padding: 1.5rem; }
}