/* ── Variables ─────────────────────────────────────── */
:root {
  --bg:           #111827;
  --surface:      #1f2937;
  --surface2:     #263040;
  --border:       #374151;
  --text:         #f3f4f6;
  --text-muted:   #9ca3af;
  --accent:       #8b5cf6;
  --accent-hover: #7c3aed;
  --success:      #10b981;
  --warning:      #f59e0b;
  --danger:       #ef4444;
  --info:         #3b82f6;
  --pending:      #f59e0b;
  --radius:       10px;
  --shadow:       0 2px 8px rgba(0,0,0,.4);
  --status-h:     56px;
  --tab-h:        48px;
}

/* ── Reset & Base ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  min-height: 100dvh;
  overscroll-behavior: none;
}

/* ── App shell ─────────────────────────────────────── */
#app { max-width: 680px; margin: 0 auto; }

/* ── Loading ───────────────────────────────────────── */
#view-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60dvh;
  gap: 16px;
  color: var(--text-muted);
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Error ─────────────────────────────────────────── */
#view-error {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60dvh;
  padding: 24px;
}
.error-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-width: 340px;
}
.error-icon { font-size: 48px; margin-bottom: 12px; }
.error-card h2 { margin-bottom: 8px; }
.error-card p { color: var(--text-muted); font-size: .9rem; }

/* ── Status Bar ────────────────────────────────────── */
#status-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-height: var(--status-h);
}
.status-left {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
}
.wearer-label { font-size: .75rem; color: var(--text-muted); white-space: nowrap; }
.wearer-name {
  font-weight: 600;
  font-size: .9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.status-badges { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
.status-role { flex-shrink: 0; }

.badge {
  font-size: .7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .04em;
  background: var(--surface2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.badge-online  { background: rgba(16,185,129,.15); color: var(--success); border-color: rgba(16,185,129,.3); }
.badge-offline { background: rgba(156,163,175,.1);  color: var(--text-muted); }
.badge-on      { background: rgba(139,92,246,.15);  color: var(--accent); border-color: rgba(139,92,246,.3); }
.badge-locked  { background: rgba(239,68,68,.15);   color: var(--danger); border-color: rgba(239,68,68,.3); }

.role-badge {
  font-size: .75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.role-owner   { background: rgba(245,158,11,.15); color: var(--warning); border: 1px solid rgba(245,158,11,.3); }
.role-trusted { background: rgba(59,130,246,.15);  color: var(--info);    border: 1px solid rgba(59,130,246,.3); }
.role-wearer  { background: rgba(156,163,175,.1);  color: var(--text-muted); border: 1px solid var(--border); }

/* ── Offline Banner ────────────────────────────────── */
.offline-banner {
  background: rgba(245,158,11,.12);
  border-bottom: 1px solid rgba(245,158,11,.3);
  color: var(--warning);
  font-size: .82rem;
  padding: 8px 16px;
  text-align: center;
}

/* ── Main Tabs ─────────────────────────────────────── */
#main-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: var(--status-h);
  z-index: 90;
}
.main-tab {
  flex: 1;
  padding: 14px 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: color .15s, border-color .15s;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  -webkit-tap-highlight-color: transparent;
}
.main-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.main-tab:hover:not(.active) { color: var(--text); }

/* ── Tab Content ───────────────────────────────────── */
.tab-content { padding: 0 0 80px; }

/* ── Sub Tabs ──────────────────────────────────────── */
.sub-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: calc(var(--status-h) + var(--tab-h));
  z-index: 80;
}
.sub-tab {
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all .15s;
  -webkit-tap-highlight-color: transparent;
}
.sub-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.sub-tab:hover:not(.active) { border-color: var(--accent); color: var(--text); }

/* ── Restriction List ──────────────────────────────── */
.list-card {
  background: var(--surface);
  margin: 10px 10px 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.restriction-row {
  display: flex;
  align-items: center;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
  min-height: 52px;
  transition: background .1s;
}
.restriction-row:last-child { border-bottom: none; }
.restriction-row.is-active { background: rgba(16,185,129,.04); }
.restriction-row.is-pending { background: rgba(245,158,11,.04); }
.restriction-row.is-disabled { opacity: .7; }

.restriction-label {
  flex: 1;
  font-size: .9rem;
  min-width: 0;
}
.restriction-label .r-name { display: block; }
.restriction-label .r-meta {
  display: block;
  font-size: .72rem;
  margin-top: 2px;
}
.meta-owner   { color: var(--warning); }
.meta-trusted { color: var(--info); }
.meta-pending { color: var(--pending); }

.restriction-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Numeric input */
.numeric-input {
  width: 58px;
  padding: 5px 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: .85rem;
  text-align: center;
  -moz-appearance: textfield;
}
.numeric-input::-webkit-outer-spin-button,
.numeric-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.numeric-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(139,92,246,.2);
}
.numeric-input:disabled { opacity: .45; cursor: not-allowed; }

/* ── Toggle Switch ─────────────────────────────────── */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 28px;
  transition: background .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 22px; height: 22px;
  left: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s, box-shadow .2s;
  box-shadow: 0 1px 4px rgba(0,0,0,.3);
}
input:checked + .toggle-slider { background: var(--success); }
input:checked + .toggle-slider::before { transform: translateX(22px); }
input:disabled + .toggle-slider { opacity: .4; cursor: not-allowed; }
.toggle-switch:has(input:disabled) { cursor: not-allowed; }

/* ── Section Cards ─────────────────────────────────── */
.section-card {
  margin: 10px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}
.section-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  padding: 12px 16px 8px;
  border-bottom: 1px solid var(--border);
}

/* ── Collar Controls ───────────────────────────────── */
.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  min-height: 52px;
}
.control-row:last-child { border-bottom: none; }
.control-label { font-size: .9rem; }

.override-section {
  padding: 14px 16px;
}
.override-title {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.override-row { display: flex; gap: 8px; }
.override-input {
  flex: 1;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .85rem;
  font-family: monospace;
}
.override-input:focus { outline: none; border-color: var(--accent); }

/* ── Buttons ───────────────────────────────────────── */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .1s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent);  color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-danger  { background: var(--danger);  color: #fff; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }
.btn-warning { background: var(--warning); color: #111; }
.btn-warning:hover:not(:disabled) { background: #d97706; }

/* ── Access Lists ──────────────────────────────────── */
.access-group-title {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  padding: 10px 16px 4px;
}
.access-entry {
  display: flex;
  align-items: center;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}
.access-entry:last-child { border-bottom: none; }
.access-info { flex: 1; min-width: 0; }
.access-name {
  font-size: .88rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.access-uuid {
  font-size: .7rem;
  color: var(--text-muted);
  font-family: monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.access-date { font-size: .72rem; color: var(--text-muted); white-space: nowrap; }
.access-actions { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }
.btn-resend {
  padding: 5px 10px;
  background: rgba(139,92,246,.12);
  color: var(--accent);
  border: 1px solid rgba(139,92,246,.25);
  border-radius: 6px;
  font-size: .78rem;
  cursor: pointer;
  flex-shrink: 0;
}
.btn-resend:hover { background: rgba(139,92,246,.22); }
.btn-resend:disabled { opacity: .4; cursor: not-allowed; }
.btn-remove {
  padding: 5px 12px;
  background: rgba(239,68,68,.12);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,.25);
  border-radius: 6px;
  font-size: .78rem;
  cursor: pointer;
  flex-shrink: 0;
}
.btn-remove:hover { background: rgba(239,68,68,.22); }

.add-access-form {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-title {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.form-input, .form-select {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: .88rem;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--accent); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239ca3af' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; background-size: 12px; padding-right: 32px; }
.form-row { display: flex; gap: 8px; }
.form-row .form-select { flex: 1; }
.form-error { font-size: .8rem; color: var(--danger); }

/* ── Relay Mode Buttons ────────────────────────────── */
.relay-mode-group { display: flex; gap: 4px; }
.relay-mode-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  -webkit-tap-highlight-color: transparent;
}
.relay-mode-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.relay-mode-btn:hover:not(.active):not(:disabled) { border-color: var(--accent); color: var(--text); }
.relay-mode-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ── Utility ───────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Desktop ───────────────────────────────────────── */
@media (min-width: 600px) {
  #app { padding: 0 8px; }
  .list-card, .section-card { margin: 12px 0 0; }
  .tab-content { padding: 0 0 40px; }
  .restriction-row { padding: 12px 20px; }
}