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

:root {
  --void: #070a14;
  --void-2: #0b0f1d;
  --glass: rgba(255, 255, 255, 0.045);
  --glass-hover: rgba(255, 255, 255, 0.07);
  --glass-strong: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --cyan: #52e0ff;
  --violet: #9b8bff;
  --success: #3ee8a8;
  --danger: #ff5d78;
  --warn: #ffc75f;

  --text: #f1f4fb;
  --muted: #8993ac;
  --muted-dim: #626a82;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  position: relative;
  overflow-x: hidden;
}

/* ---- signature: drifting aurora field behind the glass ---- */
body::before,
body::after {
  content: "";
  position: fixed;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.16;
  z-index: 0;
  pointer-events: none;
}
body::before {
  top: -20vmax;
  left: -15vmax;
  background: radial-gradient(circle, var(--cyan), transparent 70%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
body::after {
  bottom: -25vmax;
  right: -18vmax;
  background: radial-gradient(circle, var(--violet), transparent 70%);
  animation: drift-b 32s ease-in-out infinite alternate;
}
@keyframes drift-a {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(6vmax, 8vmax) scale(1.15); }
}
@keyframes drift-b {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-5vmax, -6vmax) scale(1.1); }
}
@media (prefers-reduced-motion: reduce) {
  body::before, body::after { animation: none; }
}

a { color: var(--cyan); }

::selection { background: rgba(82, 224, 255, 0.25); }

/* ---- layout shells ---- */
.center-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  z-index: 1;
}

.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 40px 24px 64px;
  position: relative;
  z-index: 1;
}

/* ---- headings ---- */
h1 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 6px;
  display: block;
}
p.sub { color: var(--muted); margin: 0 0 24px; font-size: 14px; line-height: 1.5; }

/* ---- glass surfaces ---- */
.card {
  background: var(--glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  margin-bottom: 14px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* ---- form controls ---- */
input[type=text], input[type=password], input[type=number], select {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-body);
  transition: border-color 0.15s ease, background 0.15s ease;
}
input[type=text]:focus, input[type=password]:focus, input[type=number]:focus, select:focus {
  outline: none;
  border-color: var(--cyan);
  background: rgba(0, 0, 0, 0.35);
}
input:focus-visible, select:focus-visible, button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
input[type=text], input[type=password] { width: 100%; }
select { cursor: pointer; }

button {
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  border: none;
  color: #05070d;
  font-weight: 600;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-body);
  white-space: nowrap;
  transition: filter 0.15s ease, transform 0.1s ease;
}
button:hover { filter: brightness(1.08); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.5; cursor: default; filter: none; }

button.secondary {
  background: var(--glass-strong);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
button.secondary:hover { background: var(--glass-hover); }

button.danger {
  background: linear-gradient(135deg, var(--danger), #ff3d5f);
  color: #1a0006;
}

.row { display: flex; gap: 8px; flex-wrap: wrap; }

.error-text {
  color: var(--danger);
  font-size: 13px;
  margin-top: 10px;
  min-height: 16px;
}

/* ---- links / codes ---- */
.link-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 12px;
  font-family: var(--font-mono);
  word-break: break-all;
  color: #b9d6ff;
  margin-bottom: 12px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.card-head .label { font-family: var(--font-display); font-size: 15px; font-weight: 600; }
.card-head .date { font-size: 11px; color: var(--muted); }

.actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---- top bar / stat chips ---- */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.stat-chips {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}
.stat-chip {
  display: flex;
  align-items: baseline;
  gap: 6px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: 12px;
  color: var(--muted);
}
.stat-chip strong {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.stat-chip.is-live strong { color: var(--success); }

/* ---- client card grid ---- */
.client-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 14px;
}

.client-card {
  background: var(--glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.client-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.client-card.capped { border-color: rgba(255, 93, 120, 0.35); background: rgba(255, 93, 120, 0.045); }

.client-head {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 16px;
}

/* signature micro-interaction: a pulsing signal ring on active clients,
   evoking a live proxy connection rather than a generic status dot */
.status-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted-dim);
  flex-shrink: 0;
}
.status-dot.active { background: var(--success); }
.status-dot.active::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1.5px solid var(--success);
  animation: pulse-ring 1.8s ease-out infinite;
}
.status-dot.capped { background: var(--danger); }
.status-dot.capped::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1.5px solid var(--danger);
}
@keyframes pulse-ring {
  0%   { transform: scale(0.5); opacity: 0.9; }
  100% { transform: scale(1.9); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .status-dot.active::after { animation: none; }
}

.client-label { font-family: var(--font-display); font-size: 15px; font-weight: 600; margin: 0; line-height: 1.3; }
.client-uuid {
  font-size: 11px;
  color: var(--muted);
  margin: 3px 0 0;
  font-family: var(--font-mono);
  letter-spacing: 0.2px;
}

.client-stats {
  display: flex;
  gap: 22px;
  margin-bottom: 14px;
}
.client-stats .stat-label {
  display: block;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 4px;
}
.client-stats .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ---- usage progress bar ---- */
.usage-bar-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
  margin-bottom: 10px;
}
.usage-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: width 0.4s ease;
}
.usage-bar-fill.is-warn { background: linear-gradient(90deg, var(--warn), var(--danger)); }
.usage-bar-fill.is-capped { background: var(--danger); }

.client-limit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}
.capped-badge {
  color: var(--danger);
  font-weight: 600;
}
.limit-edit-link {
  background: none;
  border: none;
  color: var(--cyan);
  font-size: 12px;
  padding: 0;
  cursor: pointer;
  font-weight: 500;
}
.limit-edit-link:hover { opacity: 0.8; }

.limit-editor {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.limit-editor .limit-value-input {
  flex: 1;
  min-width: 90px;
}
.limit-value-input, .limit-unit-select {
  padding: 9px 10px;
  font-size: 13px;
}
.limit-editor button {
  padding: 9px 11px;
  font-size: 12px;
}

.client-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.icon-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 52px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.icon-btn:hover {
  background: var(--glass-hover);
  color: var(--text);
  border-color: var(--border-strong);
  filter: none;
}
.icon-btn svg { width: 16px; height: 16px; }

.icon-btn-danger { color: #d98a91; }
.icon-btn-danger:hover {
  background: rgba(255, 93, 120, 0.12);
  color: var(--danger);
  border-color: rgba(255, 93, 120, 0.4);
}

.empty {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 48px 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}

.limit-value-input.limit-value-input,
.limit-unit-select.limit-unit-select { }

/* ---- QR code modal: single shared popup, lives outside .client-list so
   it is never touched by the periodic usage-refresh re-render, and never
   stretches a grid row the way an inline per-card box did ---- */
.qr-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(3, 5, 10, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}
.qr-modal-overlay.is-open { display: flex; }

.qr-modal {
  background: var(--void-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 22px;
  max-width: 300px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.qr-modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.qr-modal-head .label {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
}
.qr-modal-close {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  padding: 2px 8px;
  cursor: pointer;
}
.qr-modal-close:hover { color: var(--text); filter: none; }

.qr-modal-body {
  display: flex;
  justify-content: center;
  background: #f4f6fb;
  padding: 18px;
  border-radius: var(--radius-md);
}