:root {
  /* No-Slop Professional Dark Palette (Linear / GitHub standard) */
  --bg-main: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2128;
  --bg-subtle: #21262d;
  --border: #30363d;
  --border-focus: #58a6ff;

  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-dim: #6e7681;

  --accent-green: #3fb950;
  --accent-green-bg: #15271a;
  --accent-blue: #58a6ff;
  --accent-blue-bg: #162436;
  --accent-amber: #d29922;
  --accent-amber-bg: #272115;
  --accent-red: #f85149;
  --accent-red-bg: #2c1a1a;

  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* Base Setup */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
  padding: 12px;
  padding-bottom: 24px;
}

.app-container {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Preview Banner */
.preview-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.preview-banner.hidden {
  display: none;
}

/* Header & Telemetry Bar */
.telemetry-header {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-section {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.2px;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

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

.status-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 500;
  border: 1px solid transparent;
}
.status-badge.live {
  background: var(--accent-green-bg);
  border-color: rgba(63, 185, 80, 0.4);
  color: var(--accent-green);
}

.btn-icon {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font-sans);
  transition: background 150ms ease, border-color 150ms ease;
}
.btn-icon:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
}

.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-12 { grid-column: span 12; }

@media (max-width: 768px) {
  .col-8, .col-6, .col-4 {
    grid-column: span 12;
  }
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid transparent;
}
.tag-green { background: var(--accent-green-bg); border-color: rgba(63, 185, 80, 0.4); color: var(--accent-green); }
.tag-amber { background: var(--accent-amber-bg); border-color: rgba(210, 153, 34, 0.4); color: var(--accent-amber); }
.tag-blue  { background: var(--accent-blue-bg);  border-color: rgba(88, 166, 255, 0.4); color: var(--accent-blue); }

/* Bandwidth Section */
.speed-hero {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
}

.speed-metric {
  display: flex;
  flex-direction: column;
}

.speed-val {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
}
.speed-val.dl { color: var(--accent-blue); }
.speed-val.ul { color: var(--accent-green); }

.speed-label {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sparkline-canvas {
  width: 100%;
  height: 72px;
  display: block;
  margin-top: 8px;
  border-radius: 4px;
  background: #090d12;
  border: 1px solid var(--border);
}

/* System Stats List */
.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid rgba(48, 54, 61, 0.4);
  font-size: 12px;
}
.stat-row:last-child {
  border-bottom: none;
}
.stat-label {
  color: var(--text-muted);
}
.stat-val {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Progress Bars */
.progress-bar-container {
  margin-top: 10px;
}
.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: var(--bg-subtle);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 4px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent-green);
  transition: width 200ms ease;
}

/* Access Point Grid */
.ap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
@media (max-width: 540px) {
  .ap-grid { grid-template-columns: 1fr; }
}
.ap-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
.ap-box-name {
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ap-box-ip {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}
.ap-box-clients {
  font-size: 11px;
  color: var(--accent-green);
  margin-top: 4px;
  font-family: var(--font-mono);
}

/* Action Grid */
.action-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
@media (max-width: 640px) {
  .action-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 400px) {
  .action-grid { grid-template-columns: 1fr; }
}
.btn-action {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font-sans);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background 150ms ease, border-color 150ms ease;
}
.btn-action:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}
.btn-action.active-saver {
  background: var(--accent-amber-bg);
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* Toolbar & Filter Tabs */
.table-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  margin-bottom: 12px;
}

.search-box {
  flex: 1;
  min-width: 220px;
}
.search-input {
  width: 100%;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 150ms ease;
}
.search-input:focus {
  border-color: var(--border-focus);
}

.filter-tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-subtle);
  padding: 2px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease;
}
.tab-btn:hover {
  color: var(--text-main);
}
.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-main);
}

/* User Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 12px;
}

.user-table th {
  background: var(--bg-subtle);
  color: var(--text-muted);
  padding: 8px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* Sortable Table Columns */
.user-table th.sortable {
  cursor: pointer;
  user-select: none;
  transition: background 150ms ease, color 150ms ease;
}
.user-table th.sortable:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.sort-icon {
  display: inline-block;
  font-size: 10px;
  margin-left: 4px;
  color: var(--text-dim);
}
.user-table th.sorted-asc {
  color: var(--text-main);
}
.user-table th.sorted-asc .sort-icon {
  color: var(--accent-blue);
}
.user-table th.sorted-desc {
  color: var(--text-main);
}
.user-table th.sorted-desc .sort-icon {
  color: var(--accent-blue);
}

.user-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.user-table tr:last-child td {
  border-bottom: none;
}
.user-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.user-info {
  display: flex;
  flex-direction: column;
}
.user-name {
  font-weight: 600;
  color: var(--text-main);
}
.user-account {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.device-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
}
.status-indicator.online { color: var(--accent-green); }
.status-indicator.offline { color: var(--text-dim); }

.mono-metric {
  font-family: var(--font-mono);
  font-size: 12px;
}

.btn-kick {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  transition: all 150ms ease;
}
.btn-kick:hover {
  border-color: var(--accent-red);
  color: var(--accent-red);
  background: var(--accent-red-bg);
}

/* Toast Notification (Simple Fade, No Bounce) */
.toast-container {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity 150ms ease;
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-top: 8px;
}