/* ============================================================
   VRC-Monitor Design System v2
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Custom Properties ────────────────────────────────────── */
:root {
  --c-purple-900: #3b0764;
  --c-purple-700: #6d28d9;
  --c-purple-600: #7c3aed;
  --c-purple-500: #8b5cf6;
  --c-purple-400: #a78bfa;
  --c-purple-200: #ddd6fe;
  --c-purple-100: #ede9fe;

  --c-bg: #f8f7ff;
  --c-surface: #ffffff;
  --c-surface-raised: #ffffff;
  --c-border: #e5e7eb;
  --c-border-subtle: #f3f4f6;

  --c-text: #111827;
  --c-text-secondary: #6b7280;
  --c-text-tertiary: #9ca3af;

  --c-shadow-xs: 0 1px 2px rgba(0,0,0,.05);
  --c-shadow-sm: 0 2px 6px rgba(0,0,0,.07);
  --c-shadow-md: 0 4px 16px rgba(0,0,0,.09);
  --c-shadow-lg: 0 8px 32px rgba(0,0,0,.12);

  --c-success: #059669; --c-success-bg: #d1fae5; --c-success-border: #a7f3d0;
  --c-error:   #dc2626; --c-error-bg:   #fee2e2; --c-error-border:   #fca5a5;
  --c-warning: #d97706; --c-warning-bg: #fef3c7; --c-warning-border: #fde68a;
  --c-info:    #0284c7; --c-info-bg:    #e0f2fe; --c-info-border:    #bae6fd;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --header-h: 60px;
}

/* ── Dark Mode ────────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --c-bg: #0f0e17;
    --c-surface: #1a1825;
    --c-surface-raised: #221f32;
    --c-border: #2d2b3d;
    --c-border-subtle: #1e1c2a;

    --c-text: #f1f0f7;
    --c-text-secondary: #a0a0b8;
    --c-text-tertiary: #6b6a80;

    --c-shadow-xs: 0 1px 2px rgba(0,0,0,.3);
    --c-shadow-sm: 0 2px 6px rgba(0,0,0,.4);
    --c-shadow-md: 0 4px 16px rgba(0,0,0,.5);
    --c-shadow-lg: 0 8px 32px rgba(0,0,0,.6);

    --c-success-bg: #052e16; --c-success-border: #14532d;
    --c-error-bg:   #450a0a; --c-error-border:   #7f1d1d;
    --c-warning-bg: #451a03; --c-warning-border: #78350f;
    --c-info-bg:    #082f49; --c-info-border:    #0c4a6e;
  }
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--c-purple-600); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── Nav Active ───────────────────────────────────────────── */
.nav-link--active {
  background: rgba(255,255,255,.2);
  color: white !important;
}

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: linear-gradient(135deg, var(--c-purple-900) 0%, var(--c-purple-700) 100%);
  box-shadow: 0 2px 12px rgba(109,40,217,.35);
}
.header-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  flex-shrink: 0;
}
.logo { height: 34px; width: auto; border-radius: 50%; }
.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  letter-spacing: -.3px;
}
.header-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: .25rem;
  flex-wrap: wrap;
}
.nav-link {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  padding: .35rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  transition: background .15s, color .15s;
}
.nav-link:hover { background: rgba(255,255,255,.15); color: white; text-decoration: none; }
.nav-btn {
  padding: .35rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  transition: all .15s;
  text-decoration: none;
}
.nav-btn--outline {
  color: white;
  border: 1.5px solid rgba(255,255,255,.5);
}
.nav-btn--outline:hover {
  background: white;
  color: var(--c-purple-700);
  text-decoration: none;
}

/* ── Main ─────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  width: 95%;
  max-width: 1200px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ── Sections ─────────────────────────────────────────────── */
.section {}
.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.section-title__sub { font-size: .85rem; font-weight: 400; color: var(--c-text-secondary); }
.section-title__badge {
  background: var(--c-purple-100);
  color: var(--c-purple-700);
  font-size: .8rem;
  font-weight: 700;
  padding: .1rem .5rem;
  border-radius: 999px;
}
@media (prefers-color-scheme: dark) {
  .section-title__badge { background: rgba(139,92,246,.2); color: var(--c-purple-400); }
}

/* ── Info Banner ──────────────────────────────────────────── */
.info-banner {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: 1rem 1.25rem;
  background: var(--c-warning-bg);
  border: 1px solid var(--c-warning-border);
  border-radius: var(--radius-md);
  color: var(--c-warning);
  font-size: .9rem;
}
.info-banner__icon { font-size: 1.1rem; flex-shrink: 0; margin-top: .1rem; }

/* ── Stat Card Icons ──────────────────────────────────────── */
.stat-card__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-bottom: .25rem;
}
.stat-card__icon--players  { background: rgba(139,92,246,.12); color: var(--c-purple-600); }
.stat-card__icon--instances{ background: rgba(2,132,199,.12);  color: #0284c7; }
.stat-card__icon--groups   { background: rgba(5,150,105,.12);  color: #059669; }
.stat-card__icon--regions  { background: rgba(217,119,6,.12);  color: #d97706; }
.stat-card__icon--peak     { background: rgba(220,38,38,.12);  color: #dc2626; }
@media (prefers-color-scheme: dark) {
  .stat-card__icon--players  { background: rgba(139,92,246,.2); color: var(--c-purple-400); }
  .stat-card__icon--instances{ background: rgba(56,189,248,.15); color: #38bdf8; }
  .stat-card__icon--groups   { background: rgba(52,211,153,.15); color: #34d399; }
  .stat-card__icon--regions  { background: rgba(251,191,36,.15); color: #fbbf24; }
  .stat-card__icon--peak     { background: rgba(248,113,113,.15); color: #f87171; }
}

/* ── Stats Grid ───────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}
.stat-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  box-shadow: var(--c-shadow-sm);
  transition: transform .2s cubic-bezier(.4,0,.2,1), box-shadow .2s;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-purple-600), var(--c-purple-400));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--c-shadow-md); }
.stat-card__label {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--c-text-secondary);
}
.stat-card__value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--c-purple-600);
  line-height: 1;
}
@media (prefers-color-scheme: dark) {
  .stat-card__value { color: var(--c-purple-400); }
}
.stat-card__sub { font-size: .75rem; color: var(--c-text-secondary); }
.stat-card--regions .stat-card__value { font-size: 1rem; font-weight: 400; color: var(--c-text); }
.stat-card__regions {
  font-size: .875rem;
  line-height: 1.8;
  max-height: 110px;
  overflow-y: auto;
}
.region-line {
  display: flex;
  gap: .4rem;
  align-items: center;
  padding: .1rem 0;
  font-size: .82rem;
}
.region-line span:first-child { font-size: 1rem; line-height: 1; }
.region-line strong { color: var(--c-purple-600); font-size: .8rem; min-width: 32px; }
.region-line span:last-child { color: var(--c-text); font-weight: 600; }
@media (prefers-color-scheme: dark) { .region-line strong { color: var(--c-purple-400); } }

/* ── Groups Grid ──────────────────────────────────────────── */
.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}
.group-card {
  display: block;
  text-decoration: none;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--c-shadow-sm);
  transition: transform .2s cubic-bezier(.4,0,.2,1), box-shadow .2s, border-color .2s;
  color: var(--c-text);
}
.group-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--c-shadow-lg);
  border-color: var(--c-purple-400);
  text-decoration: none;
  color: var(--c-text);
}
.group-card__banner {
  height: 90px;
  background-color: var(--c-purple-900);
  background-image: linear-gradient(135deg, var(--c-purple-900), var(--c-purple-700));
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
  transition: background-image .3s ease;
}
.group-card__banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.15) 0%, rgba(0,0,0,.6) 100%);
}
.group-card__body { padding: 1rem 1.25rem 1.25rem; }
.group-card__header { display: flex; align-items: flex-start; justify-content: space-between; gap: .5rem; margin-bottom: .75rem; }
.group-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  word-break: break-word;
}
.group-card__id {
  font-family: monospace;
  font-size: .7rem;
  color: var(--c-text-tertiary);
  margin-top: .15rem;
}
.group-card__stats {
  display: flex;
  justify-content: space-around;
  padding: .75rem 0;
  border-top: 1px solid var(--c-border-subtle);
  border-bottom: 1px solid var(--c-border-subtle);
  gap: .5rem;
  margin-bottom: .75rem;
}
.group-card__stat { text-align: center; flex: 1; }
.group-card__stat-label { font-size: .65rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--c-text-tertiary); display: block; margin-bottom: .15rem; }
.group-card__stat-value { font-size: 1.4rem; font-weight: 700; color: var(--c-purple-600); display: block; }
@media (prefers-color-scheme: dark) { .group-card__stat-value { color: var(--c-purple-400); } }
.group-card__instances { font-size: .8rem; display: flex; flex-direction: column; gap: .25rem; }
.instance-line { display: flex; justify-content: space-between; align-items: center; padding: .2rem 0; border-bottom: 1px solid var(--c-border-subtle); }
.instance-line:last-child { border-bottom: none; }
.pred-label { color: var(--c-text-secondary); font-size: .78rem; }

/* ── Private Badge ────────────────────────────────────────── */
.private-badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  font-size: .7rem;
  font-weight: 600;
  padding: .15rem .5rem;
  border-radius: 99px;
  background: rgba(220,38,38,.1);
  color: var(--c-error);
  white-space: nowrap;
  flex-shrink: 0;
}
@media (prefers-color-scheme: dark) {
  .private-badge { background: rgba(248,113,113,.15); }
}

/* ── Chart Section ────────────────────────────────────────── */
.section--chart {}
.chart-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--c-shadow-sm);
}
.chart-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.chart-card__title { font-size: 1rem; font-weight: 600; color: var(--c-text); }
.chart-wrap { min-height: 320px; }
#global-chart, #group-detail-chart { display: block; width: 100%; height: 320px; }

/* ── Timespan Buttons ─────────────────────────────────────── */
.timespan-selector { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
.timespan-btn {
  padding: .3rem .7rem;
  font-size: .8rem;
  font-weight: 600;
  background: var(--c-bg);
  color: var(--c-text-secondary);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  transition: all .15s;
  white-space: nowrap;
}
.timespan-btn:hover { background: var(--c-purple-100); border-color: var(--c-purple-400); color: var(--c-purple-700); }
.timespan-btn--active { background: var(--c-purple-600); color: white; border-color: var(--c-purple-600); }
.timespan-btn--active:hover { background: var(--c-purple-700); border-color: var(--c-purple-700); color: white; }
.timespan-btn:disabled { opacity: .5; cursor: not-allowed; }
@media (prefers-color-scheme: dark) {
  .timespan-btn { background: var(--c-surface-raised); }
  .timespan-btn:hover { background: rgba(139,92,246,.15); border-color: var(--c-purple-500); color: var(--c-purple-400); }
}

/* ── Instances Grid ───────────────────────────────────────── */
.instances-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.instance-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: var(--c-shadow-xs);
  font-size: .875rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  position: relative;
  overflow: hidden;
  transition: transform .15s, box-shadow .15s;
}
.instance-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--instance-fill-color, #22c55e);
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}
.instance-card:hover { transform: translateY(-2px); box-shadow: var(--c-shadow-sm); }

/* BEM instance card internals */
.instance-card__header { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.instance-card__id { font-weight: 600; color: var(--c-purple-600); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; font-size: .875rem; }
@media (prefers-color-scheme: dark) { .instance-card__id { color: var(--c-purple-400); } }
.instance-card__online {
  width: 9px; height: 9px;
  background: #22c55e;
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
  box-shadow: 0 0 4px #22c55e;
}
@keyframes pulse-dot { 0%,100%{transform:scale(.85);opacity:.7} 50%{transform:scale(1.15);opacity:1} }
.instance-card__world { font-size: .75rem; color: var(--c-text-tertiary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: .15rem 0; }
.instance-card__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: .5rem 0; }
.instance-card__stat { display: flex; flex-direction: column; gap: .1rem; }
.instance-card__stat-label { font-size: .65rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--c-text-tertiary); }
.instance-card__stat-value { font-size: .9rem; font-weight: 700; color: var(--c-text); }

/* Fill bar */
.fill-bar { height: 5px; background: var(--c-border); border-radius: 99px; overflow: hidden; margin: .35rem 0 .5rem; }
.fill-bar__inner { height: 100%; border-radius: 99px; background: var(--instance-fill-color, #22c55e); transition: width .4s ease; }

/* Queue badge */
.queue-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .6rem;
  background: rgba(217,119,6,.1);
  color: var(--c-warning);
  border: 1px solid rgba(217,119,6,.25);
  border-radius: var(--radius-sm);
  margin-top: .25rem;
}
@media (prefers-color-scheme: dark) { .queue-badge { background: rgba(251,191,36,.1); border-color: rgba(251,191,36,.2); } }

.instance-card__updated { font-size: .7rem; color: var(--c-text-tertiary); text-align: right; margin-top: .1rem; }
.instance-card__prediction { font-size: .75rem; color: var(--c-info); padding: .2rem 0; }
.instance-card__actions { margin-top: .5rem; padding-top: .5rem; border-top: 1px solid var(--c-border-subtle); display: flex; justify-content: flex-end; align-items: center; }
.instance-card__no-link { font-size: .8rem; color: var(--c-text-tertiary); }

/* ── Flash Messages ───────────────────────────────────────── */
.flashes { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.flash {
  padding: .75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: .9rem;
}
.flash--success { background: var(--c-success-bg); border-color: var(--c-success-border); color: var(--c-success); }
.flash--error   { background: var(--c-error-bg);   border-color: var(--c-error-border);   color: var(--c-error); }
.flash--warning { background: var(--c-warning-bg); border-color: var(--c-warning-border); color: var(--c-warning); }
.flash--info    { background: var(--c-info-bg);    border-color: var(--c-info-border);    color: var(--c-info); }

/* ── Status Text ──────────────────────────────────────────── */
.status-text {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  color: var(--c-text-secondary);
  font-style: italic;
}
.status-text--loading {}
.status-text--error { color: var(--c-error); font-style: normal; font-weight: 500; }

/* ── Skeleton ─────────────────────────────────────────────── */
.skeleton {
  display: inline-block;
  background: linear-gradient(90deg, var(--c-border) 25%, var(--c-border-subtle) 50%, var(--c-border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.6s ease-in-out infinite;
  border-radius: var(--radius-sm);
}
.skeleton--number { width: 80px; height: 2.2rem; }
.skeleton--text   { width: 120px; height: 1rem; }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ── Spinner ──────────────────────────────────────────────── */
.spinner {
  width: 18px; height: 18px;
  border: 2.5px solid var(--c-border);
  border-top-color: var(--c-purple-600);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: calc(var(--header-h) + 12px);
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 360px;
}
.toast {
  padding: .85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--c-shadow-lg);
  display: flex;
  align-items: center;
  gap: .75rem;
  animation: toast-in .3s cubic-bezier(.4,0,.2,1);
  cursor: pointer;
  font-size: .9rem;
  border-left: 4px solid transparent;
}
.toast.success { background: var(--c-success-bg); color: var(--c-success); border-left-color: var(--c-success); }
.toast.error   { background: var(--c-error-bg);   color: var(--c-error);   border-left-color: var(--c-error); }
.toast.warning { background: var(--c-warning-bg); color: var(--c-warning); border-left-color: var(--c-warning); }
.toast.info    { background: var(--c-info-bg);    color: var(--c-info);    border-left-color: var(--c-info); }
.toast.hiding  { animation: toast-out .3s cubic-bezier(.4,0,.2,1) forwards; }
@keyframes toast-in  { from{transform:translateX(120%);opacity:0} to{transform:translateX(0);opacity:1} }
@keyframes toast-out { from{transform:translateX(0);opacity:1} to{transform:translateX(120%);opacity:0} }

/* ── Forms ────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: .875rem; font-weight: 600; color: var(--c-text-secondary); margin-bottom: .4rem; }
.form-input {
  width: 100%;
  padding: .65rem .9rem;
  background: var(--c-bg);
  color: var(--c-text);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.form-input:focus {
  outline: none;
  border-color: var(--c-purple-500);
  box-shadow: 0 0 0 3px rgba(139,92,246,.15);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-hint { font-size: .75rem; color: var(--c-text-tertiary); margin-top: .3rem; display: block; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: all .15s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--c-purple-600);
  color: white;
  border-color: var(--c-purple-600);
}
.btn--primary:hover { background: var(--c-purple-700); border-color: var(--c-purple-700); }
.btn--full { width: 100%; justify-content: center; }
.btn--sm { padding: .35rem .8rem; font-size: .8rem; }
.btn--outline {
  background: transparent;
  color: var(--c-purple-600);
  border-color: var(--c-purple-600);
}
.btn--outline:hover { background: var(--c-purple-600); color: white; text-decoration: none; }
.btn--danger {
  background: transparent;
  color: var(--c-error);
  border-color: var(--c-error);
}
.btn--danger:hover { background: var(--c-error); color: white; }
@media (prefers-color-scheme: dark) {
  .btn--outline { color: var(--c-purple-400); border-color: var(--c-purple-500); }
  .btn--outline:hover { background: var(--c-purple-600); color: white; }
}

/* ── Admin Card ───────────────────────────────────────────── */
.admin-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--c-shadow-sm);
  max-width: 680px;
}
.admin-form { margin-top: 1.5rem; }
.admin-desc { color: var(--c-text-secondary); font-size: .9rem; margin-bottom: 1rem; }
.admin-sub-title { font-size: 1rem; font-weight: 600; color: var(--c-text); margin-bottom: 1rem; }
.balance-report { margin-top: 1.5rem; }
.balance-report__title, .balance-errors__title { font-size: .95rem; font-weight: 600; margin-bottom: .5rem; }
.balance-report__pre {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: .78rem;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
  font-family: monospace;
  color: var(--c-text-secondary);
}
.balance-errors { margin-top: 1rem; }
.balance-errors__title { color: var(--c-error); }
.balance-errors ul { padding-left: 1.25rem; color: var(--c-error); font-size: .875rem; }
.users-list { display: flex; flex-direction: column; gap: .75rem; }
.user-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .75rem 1rem;
  background: var(--c-bg);
  border: 1px solid var(--c-border-subtle);
  border-radius: var(--radius-md);
  gap: 1rem;
  font-size: .875rem;
  transition: border-color .15s;
}
.user-row:hover { border-color: var(--c-border); }
.user-row__info { display: flex; flex-direction: column; gap: .2rem; min-width: 0; flex: 1; }
.user-row__name { font-weight: 600; color: var(--c-text); }
.user-groups { color: var(--c-text-secondary); font-size: .78rem; word-break: break-all; }
.user-row__actions { display: flex; align-items: center; gap: .5rem; flex-shrink: 0; }

/* ── Toggle Switch ────────────────────────────────────────── */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--c-border);
  border-radius: 99px;
  cursor: pointer;
  transition: background .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: var(--c-shadow-xs);
}
.toggle-switch input:checked + .toggle-slider { background: var(--c-error); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* ── Group Settings (privacy page) ───────────────────────── */
.group-settings-list { display: flex; flex-direction: column; gap: .5rem; margin-top: 1.25rem; }
.group-settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1rem;
  background: var(--c-bg);
  border: 1px solid var(--c-border-subtle);
  border-radius: var(--radius-md);
  gap: 1rem;
  transition: border-color .15s;
}
.group-settings-row:hover { border-color: var(--c-border); }
.group-settings-row__info { display: flex; flex-direction: column; gap: .15rem; min-width: 0; }
.group-settings-row__name { font-weight: 600; color: var(--c-text); font-size: .9rem; }
.group-settings-row__id { font-family: monospace; font-size: .7rem; color: var(--c-text-tertiary); }
.group-settings-row__toggle { display: flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.group-visibility-label { font-size: .78rem; font-weight: 600; min-width: 72px; text-align: right; }
.group-visibility-label--public { color: var(--c-success); }
.group-visibility-label--private { color: var(--c-error); }

/* ── Group Checklist (user management) ───────────────────── */
.group-checklist {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: .4rem;
  padding: .75rem;
  background: var(--c-bg);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  max-height: 280px;
  overflow-y: auto;
}
.group-checklist__item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .45rem .6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .12s;
}
.group-checklist__item:hover { background: var(--c-surface-raised); }
.group-checklist__item input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--c-purple-600);
  flex-shrink: 0;
  cursor: pointer;
}
.group-checklist__name { font-size: .875rem; font-weight: 500; color: var(--c-text); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.group-checklist__id { font-family: monospace; font-size: .65rem; color: var(--c-text-tertiary); white-space: nowrap; }

/* ── Account Status ───────────────────────────────────────── */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.status-card {
  display: flex;
  align-items: center;
  gap: .875rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
}
.status-card--ok { border-color: var(--c-success); }
.status-card--fail { border-color: var(--c-error); }
.status-card__indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-card--ok .status-card__indicator { background: var(--c-success); box-shadow: 0 0 6px var(--c-success); }
.status-card--fail .status-card__indicator { background: var(--c-error); }
.status-card__body { display: flex; flex-direction: column; gap: .2rem; min-width: 0; }
.status-card__title { font-size: .8rem; font-weight: 600; color: var(--c-text-secondary); text-transform: uppercase; letter-spacing: .05em; }
.status-card__name { font-size: .95rem; font-weight: 600; color: var(--c-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status-card__badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  padding: .15rem .5rem;
  border-radius: 99px;
  letter-spacing: .03em;
}
.status-card__badge--ok { background: color-mix(in srgb, var(--c-success) 15%, transparent); color: var(--c-success); }
.status-card__badge--fail { background: color-mix(in srgb, var(--c-error) 15%, transparent); color: var(--c-error); }
.status-card__error { font-size: .78rem; color: var(--c-error); word-break: break-word; }

/* ── Login Page ───────────────────────────────────────────── */
.login-body { background: var(--c-bg); display: flex; align-items: center; min-height: 100vh; }
.login-wrap { width: 100%; padding: 1.5rem; display: flex; justify-content: center; align-items: center; }
.login-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--c-shadow-lg);
}
.login-card__brand { display: flex; flex-direction: column; align-items: center; gap: .5rem; margin-bottom: 2rem; }
.login-logo { height: 56px; width: auto; border-radius: 50%; }
.login-title { font-size: 1.5rem; font-weight: 700; color: var(--c-text); }
.login-form { display: flex; flex-direction: column; gap: .25rem; }

/* ── Breadcrumb ───────────────────────────────────────────── */
.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  color: var(--c-text-tertiary);
}
.page-breadcrumb a { color: var(--c-purple-600); }
.breadcrumb-sep { color: var(--c-border); }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 1.5rem;
  margin-top: auto;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  font-size: .85rem;
  color: var(--c-text-secondary);
}
.site-footer a { color: var(--c-purple-600); }

/* ── Focus visible ────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--c-purple-500); outline-offset: 2px; }

/* ── ApexCharts dark mode ─────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  .apexcharts-canvas { background: transparent !important; }
  .apexcharts-text, .apexcharts-xaxis-label, .apexcharts-yaxis-label { fill: var(--c-text-secondary) !important; }
  .apexcharts-gridline { stroke: var(--c-border) !important; }
  .apexcharts-tooltip { background: var(--c-surface-raised) !important; border: 1px solid var(--c-border) !important; color: var(--c-text) !important; }
  .apexcharts-tooltip-title { background: var(--c-surface) !important; border-bottom: 1px solid var(--c-border) !important; color: var(--c-text) !important; }
  .apexcharts-tooltip-text { color: var(--c-text) !important; }
  .apexcharts-legend-text { color: var(--c-text-secondary) !important; }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .main-content { width: 98%; margin: 1rem auto; gap: 1.5rem; }
  .header-nav { gap: .1rem; }
  .nav-link { padding: .3rem .5rem; font-size: .8rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card__value { font-size: 1.75rem; }
  .groups-grid { grid-template-columns: 1fr; }
  .chart-card__header { flex-direction: column; align-items: flex-start; }
  .admin-card { padding: 1.25rem; }
  .toast-container { left: 8px; right: 8px; max-width: none; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
  .stat-card { padding: 1rem; }
  .stat-card__value { font-size: 1.5rem; }
}