:root {
  --bg: #050508;
  --bg-elevated: #0a0a12;
  --card: rgba(10, 12, 22, 0.82);
  --card-solid: #0c0e18;
  --border: rgba(0, 240, 255, 0.18);
  --border-bright: rgba(0, 240, 255, 0.45);
  --text: #e8f4ff;
  --muted: #6b8299;
  --cyan: #00f0ff;
  --magenta: #ff00aa;
  --yellow: #fcee0a;
  --green: #39ff14;
  --danger: #ff2a6d;
  --primary: #00f0ff;
  --radius: 4px;
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
  --glow-magenta: 0 0 20px rgba(255, 0, 170, 0.35);
  --font-display: "Orbitron", sans-serif;
  --font-body: "Rajdhani", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  position: relative;
}

/* ── Cyber background layers ── */
.cyber-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.cyber-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 20%, transparent 75%);
}

.cyber-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 15% 0%, rgba(0, 240, 255, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 35% at 85% 10%, rgba(255, 0, 170, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(0, 240, 255, 0.06) 0%, transparent 60%);
}

.cyber-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.12) 2px,
    rgba(0, 0, 0, 0.12) 4px
  );
  opacity: 0.35;
  animation: scanline-drift 8s linear infinite;
}

@keyframes scanline-drift {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(57, 255, 20, 0.4), inset 0 0 8px rgba(57, 255, 20, 0.08); }
  50% { box-shadow: 0 0 16px rgba(57, 255, 20, 0.7), inset 0 0 12px rgba(57, 255, 20, 0.15); }
}

@keyframes flicker-border {
  0%, 100% { border-color: rgba(0, 240, 255, 0.35); }
  50% { border-color: rgba(0, 240, 255, 0.55); }
}

@keyframes data-flow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ── Auth / Login ── */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-card {
  width: min(440px, 100%);
  position: relative;
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(135deg, var(--cyan), var(--magenta), var(--cyan));
  background-size: 200% 200%;
  animation: data-flow 6s ease infinite;
  z-index: -1;
  opacity: 0.7;
}

.auth-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 4px;
  background: linear-gradient(90deg, var(--cyan), #fff, var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.4));
}

.auth-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.7;
  margin: 0 0 20px;
}

.auth-card h1.auth-logo + .muted,
.auth-card .auth-subtitle + .muted {
  margin-bottom: 24px;
}

/* ── Shared card styles ── */
.auth-card, .modal-card, .node-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(12px);
  position: relative;
}

.node-card {
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.node-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-bright);
  box-shadow: var(--glow-cyan);
}

.node-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--magenta), transparent);
  opacity: 0.6;
}

/* ── Topbar ── */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  color: var(--cyan);
  filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.6));
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
}

.brand-domain {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.container { max-width: 1024px; margin: 0 auto; padding: 24px; }

/* ── Hero ── */
.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.hero h1 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
  opacity: 0.75;
  letter-spacing: 0.06em;
}

.muted { color: var(--muted); }

/* ── Forms ── */
.form label, .field label {
  display: block;
  margin: 14px 0 6px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.85;
}

input[type="text"],
input[type="password"],
input[readonly],
input.copy-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.5);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.15), var(--glow-cyan);
}

input.copy-input {
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--cyan);
  opacity: 0.9;
}

.link-hint {
  margin: 8px 0 0;
  font-size: 0.75rem;
  line-height: 1.5;
  word-break: break-all;
  font-family: var(--font-mono);
}

/* ── Buttons ── */
.btn {
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.4);
  color: var(--text);
  padding: 9px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.btn.primary {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(255, 0, 170, 0.15));
  border-color: var(--cyan);
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}

.btn.primary:hover {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.35), rgba(255, 0, 170, 0.25));
  color: #fff;
  text-shadow: 0 0 8px var(--cyan);
}

.btn.ghost {
  background: transparent;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.btn.danger {
  color: var(--danger);
  border-color: rgba(255, 42, 109, 0.45);
  font-size: 0.78rem;
}

.btn.danger:hover {
  border-color: var(--danger);
  box-shadow: 0 0 16px rgba(255, 42, 109, 0.4);
  color: #fff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Node list ── */
.node-list { display: grid; gap: 20px; }

.node-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.node-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.node-title {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid var(--border);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-badge.online {
  color: var(--green);
  border-color: rgba(57, 255, 20, 0.5);
  background: rgba(57, 255, 20, 0.08);
  animation: pulse-glow 2.5s ease-in-out infinite;
}

.status-badge.offline {
  color: var(--muted);
  background: rgba(0, 0, 0, 0.3);
  border-color: rgba(107, 130, 153, 0.3);
}

.status-text.ok {
  color: var(--green);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.5);
  font-family: var(--font-mono);
}

.status-text.err {
  color: var(--danger);
  text-shadow: 0 0 10px rgba(255, 42, 109, 0.5);
  font-family: var(--font-mono);
}

/* ── Summary HUD bar ── */
.summary-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.summary-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
  overflow: hidden;
  animation: flicker-border 4s ease-in-out infinite;
}

.summary-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--magenta));
}

.summary-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.summary-icon {
  width: 16px;
  height: 16px;
  color: var(--cyan);
  opacity: 0.8;
}

.summary-label {
  display: block;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.summary-item strong,
.summary-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
}

.summary-item.speed-up strong { color: var(--green); text-shadow: 0 0 12px rgba(57, 255, 20, 0.3); }
.summary-item.speed-down strong { color: var(--magenta); text-shadow: 0 0 12px rgba(255, 0, 170, 0.3); }

/* ── Node stats grid ── */
.node-stats {
  margin-bottom: 18px;
  padding: 14px;
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(0, 240, 255, 0.1);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border-left: 2px solid rgba(0, 240, 255, 0.15);
}

.stat-box.speed { border-left-color: rgba(57, 255, 20, 0.3); }
.stat-box.total { border-left-color: rgba(255, 0, 170, 0.3); }

.stat-label {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  transition: color 0.3s ease;
}

.stat-box.speed .stat-value { color: var(--green); }
.stat-box.total .stat-value { color: var(--magenta); }

.stat-value.stat-flash {
  animation: stat-flash 0.4s ease;
}

@keyframes stat-flash {
  0% { opacity: 0.5; transform: scale(0.98); }
  50% { opacity: 1; transform: scale(1.02); color: var(--cyan); }
  100% { transform: scale(1); }
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.4);
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid rgba(107, 130, 153, 0.25);
  letter-spacing: 0.06em;
}

.copy-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.node-actions { margin-top: 18px; text-align: right; }

.alert {
  background: rgba(255, 42, 109, 0.12);
  border: 1px solid rgba(255, 42, 109, 0.4);
  padding: 10px 14px;
  border-radius: var(--radius);
  margin: 14px 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--danger);
}

/* ── Toast ── */
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: var(--card-solid);
  border: 1px solid var(--cyan);
  padding: 12px 18px;
  border-radius: var(--radius);
  z-index: 200;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan);
  box-shadow: var(--glow-cyan);
  animation: toast-in 0.3s ease;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.hidden { display: none !important; }

/* ── Modal ── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 150;
}

.modal-card {
  width: min(440px, 100%);
  border-color: var(--border-bright);
  box-shadow: var(--glow-cyan), var(--glow-magenta);
}

.modal-card h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ── Empty state ── */
.empty-nodes {
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

@media (max-width: 640px) {
  .hero { flex-direction: column; align-items: flex-start; }
  .copy-row { grid-template-columns: 1fr; }
  .summary-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brand-domain { display: none; }
}