*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f1117;
  --surface:   #1a1d27;
  --surface2:  #222536;
  --border:    #2e3148;
  --accent:    #6c63ff;
  --accent2:   #4ade80;
  --danger:    #f87171;
  --text:      #e2e8f0;
  --text2:     #94a3b8;
  --text3:     #4a5568;
  --radius:    12px;
  --radius-sm: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
}

/* ── Nav ── */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.nav-inner {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.3px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 8px var(--accent2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

/* ── Layout ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── Stats ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.stat-label {
  font-size: 12px;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-weight: 600;
  font-size: 15px;
}

/* ── Add peer form ── */
.add-form {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: center;
}

.input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.input:focus {
  border-color: var(--accent);
}

.input::placeholder { color: var(--text3); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { opacity: 0.85; }

.btn-ghost {
  background: var(--surface2);
  color: var(--text2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text3); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* ── Table ── */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  padding: 12px 20px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.1s;
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--surface2); }

tbody td {
  padding: 14px 20px;
  vertical-align: middle;
}

.peer-name {
  font-weight: 600;
  font-size: 14px;
}

.monospace {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
  color: var(--text2);
  background: var(--surface2);
  padding: 2px 6px;
  border-radius: 4px;
}

.time { color: var(--text2); font-size: 13px; }

.traffic { color: var(--text2); font-size: 13px; }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.badge-active {
  background: rgba(74, 222, 128, 0.12);
  color: var(--accent2);
  border: 1px solid rgba(74, 222, 128, 0.25);
}

.badge-revoked {
  background: rgba(248, 113, 113, 0.1);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

/* ── Actions ── */
.actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ── Empty state ── */
.empty {
  padding: 60px 24px;
  text-align: center;
  color: var(--text2);
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-text {
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--text);
}

.empty-sub {
  font-size: 13px;
  color: var(--text2);
}

/* ── QR Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  max-width: 340px;
  width: 90%;
  animation: modal-in 0.2s ease;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.modal-sub {
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 20px;
}

.qr-wrap {
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 16px;
  display: inline-block;
  margin-bottom: 20px;
}

.qr-wrap img {
  display: block;
  width: 200px;
  height: 200px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .container { padding: 20px 16px; }
  .add-form { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .actions { flex-wrap: wrap; }
}