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

:root {
  --bg: #0a0a0a;
  --bg-panel: #111111;
  --border: #333333;
  --border-bright: #555555;
  --text: #e0e0e0;
  --text-muted: #888888;
  --green: #33ff33;
  --green-dim: #1a8c1a;
  --amber: #ffaa00;
  --cyan: #00cccc;
  --red: #ff4444;
  --yellow: #ffcc00;
  --font: 'Space Mono', 'Courier New', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  font-size: 14px;
  position: relative;
  overflow-x: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
}

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

.cyber-grid {
  position: absolute;
  inset: -60px;
  background-image:
    linear-gradient(rgba(0, 204, 204, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 204, 204, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: grid-drift 24s linear infinite;
}

.cyber-grid--diag {
  background-image:
    linear-gradient(45deg, rgba(51, 255, 51, 0.02) 1px, transparent 1px),
    linear-gradient(-45deg, rgba(51, 255, 51, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: grid-drift-rev 32s linear infinite;
  opacity: 0.6;
}

.cyber-floor {
  position: absolute;
  bottom: 0;
  left: -50%;
  width: 200%;
  height: 45%;
  background:
    linear-gradient(180deg, transparent 0%, rgba(0, 204, 204, 0.03) 100%),
    linear-gradient(rgba(0, 204, 204, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 204, 204, 0.06) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  transform: perspective(300px) rotateX(65deg);
  transform-origin: center bottom;
  animation: floor-scroll 12s linear infinite;
  mask-image: linear-gradient(180deg, transparent, black 30%, black 80%, transparent);
}

.cyber-streams {
  position: absolute;
  inset: 0;
}

.cyber-streams i {
  position: absolute;
  display: block;
}

/* Horizontal data streams */
.cyber-streams--h i {
  top: var(--y);
  left: -200px;
  width: 180px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--green), transparent);
  box-shadow: 0 0 8px rgba(0, 204, 204, 0.5), 0 0 2px var(--cyan);
  opacity: 0;
  animation: stream-h var(--dur) linear infinite;
  animation-delay: var(--delay);
}

.cyber-streams--h i:nth-child(even) {
  width: 120px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  box-shadow: 0 0 6px rgba(51, 255, 51, 0.4);
}

.cyber-streams--h i:nth-child(3n) {
  width: 260px;
  height: 2px;
  opacity: 0;
}

/* Vertical data streams */
.cyber-streams--v i {
  left: var(--x);
  top: -120px;
  width: 1px;
  height: 100px;
  background: linear-gradient(180deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 6px rgba(0, 204, 204, 0.4);
  opacity: 0;
  animation: stream-v var(--dur) linear infinite;
  animation-delay: var(--delay);
}

.cyber-streams--v i:nth-child(even) {
  height: 60px;
  background: linear-gradient(180deg, transparent, var(--green), transparent);
  box-shadow: 0 0 4px rgba(51, 255, 51, 0.3);
}

/* Diagonal streaks */
.cyber-streams--d i {
  top: 50%;
  left: -300px;
  width: 300px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 204, 204, 0.6), transparent);
  transform: rotate(var(--rot));
  transform-origin: left center;
  opacity: 0;
  animation: stream-d var(--dur) linear infinite;
  animation-delay: var(--delay);
}

.cyber-glow {
  position: absolute;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  animation: glow-pulse 6s ease-in-out infinite alternate;
}

.cyber-glow--tl {
  top: -20%;
  left: -15%;
  background: var(--cyan);
}

.cyber-glow--br {
  bottom: -20%;
  right: -15%;
  background: var(--green);
  animation-delay: 3s;
}

.cyber-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%, transparent 30%, var(--bg) 100%);
}

@keyframes grid-drift {
  from { transform: translate(0, 0); }
  to { transform: translate(48px, 48px); }
}

@keyframes grid-drift-rev {
  from { transform: translate(0, 0); }
  to { transform: translate(-80px, 80px); }
}

@keyframes floor-scroll {
  from { background-position: 0 0, 0 0, 0 0; }
  to { background-position: 0 0, 0 40px, 40px 0; }
}

@keyframes stream-h {
  0% { left: -200px; opacity: 0; }
  5% { opacity: 0.7; }
  95% { opacity: 0.7; }
  100% { left: 110%; opacity: 0; }
}

@keyframes stream-v {
  0% { top: -120px; opacity: 0; }
  5% { opacity: 0.5; }
  95% { opacity: 0.5; }
  100% { top: 110%; opacity: 0; }
}

@keyframes stream-d {
  0% { left: -300px; opacity: 0; }
  8% { opacity: 0.4; }
  92% { opacity: 0.4; }
  100% { left: 110%; opacity: 0; }
}

@keyframes glow-pulse {
  from { opacity: 0.08; transform: scale(1); }
  to { opacity: 0.16; transform: scale(1.1); }
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  pointer-events: none;
  z-index: 1000;
}

/* Terminal window */
.terminal {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 960px;
  margin: 0;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  box-shadow:
    0 0 0 1px rgba(0, 204, 204, 0.08),
    0 0 40px rgba(0, 0, 0, 0.8),
    0 0 80px rgba(0, 204, 204, 0.04);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: #0d0d0d;
}

.dot {
  width: 10px;
  height: 10px;
  border: 1px solid var(--border-bright);
}

.dot--red { background: var(--red); }
.dot--yellow { background: var(--yellow); }
.dot--green { background: var(--green); }

.terminal-title {
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.terminal-body {
  padding: 2rem 1.5rem 2.5rem;
}

/* Hero */
.hero {
  margin-bottom: 2.5rem;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 2rem;
}

.prompt {
  font-size: 13px;
  margin-bottom: 1.25rem;
  word-break: break-all;
}

.prompt-user { color: var(--green); }
.prompt-host { color: var(--cyan); }
.prompt-path { color: var(--amber); }
.cmd { color: var(--text); }

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.8;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.card {
  background: var(--bg-panel);
  padding: 1.5rem;
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.tag {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border: 1px solid;
  flex-shrink: 0;
  margin-top: 2px;
}

.tag--bank {
  color: var(--green);
  border-color: var(--green-dim);
}

.tag--crypto {
  color: var(--amber);
  border-color: #996600;
}

.card h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.card-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* QR */
.qr-frame {
  display: flex;
  justify-content: center;
  padding: 12px;
  background: #ffffff;
  border: 1px solid var(--border);
  margin-bottom: 1.25rem;
}

.qr-frame img {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
}

/* Details */
.details {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
}

.detail-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-row dt {
  font-size: 11px;
  color: var(--text-muted);
  padding: 8px 10px;
  border-right: 1px solid var(--border);
  background: #0d0d0d;
}

.detail-row dd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  padding: 8px 10px;
  word-break: break-all;
}

.mono {
  letter-spacing: 0.03em;
}

/* Wallet */
.wallet-block {
  margin-bottom: 1rem;
}

.wallet-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.wallet-label::before {
  content: '> ';
  color: var(--green);
}

.wallet-address {
  border: 1px solid var(--border);
  background: #0d0d0d;
}

.wallet-address code {
  display: block;
  font-family: var(--font);
  font-size: 11px;
  line-height: 1.6;
  color: var(--cyan);
  word-break: break-all;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.network-note {
  font-size: 12px;
  color: var(--text-muted);
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: #0d0d0d;
  line-height: 1.6;
}

.warn {
  color: var(--amber);
  font-weight: 700;
}

.network-note strong {
  color: var(--amber);
  font-weight: 700;
}

/* Copy button */
.copy-btn {
  font-family: var(--font);
  font-size: 11px;
  padding: 2px 6px;
  background: transparent;
  border: 1px solid var(--border-bright);
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}

.copy-btn:hover {
  color: var(--green);
  border-color: var(--green);
  background: rgba(51, 255, 51, 0.05);
}

.copy-btn--primary {
  width: 100%;
  padding: 10px 12px;
  font-size: 12px;
  border: none;
  border-top: 1px solid var(--border);
  color: var(--text);
}

.copy-btn--primary:hover {
  color: var(--green);
  background: rgba(51, 255, 51, 0.08);
}

.copy-btn.copied {
  color: var(--green);
  border-color: var(--green);
}

/* Footer */
.footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--border);
}

.prompt--footer {
  margin-bottom: 0.5rem;
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.footer-text {
  font-size: 12px;
  color: var(--text-muted);
  padding-left: 0;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: var(--bg-panel);
  border: 1px solid var(--green);
  color: var(--green);
  padding: 8px 16px;
  font-family: var(--font);
  font-size: 12px;
  z-index: 1001;
  opacity: 0;
  transition: transform 0.2s, opacity 0.2s;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast::before {
  content: '[OK] ';
  color: var(--text-muted);
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  .cyber-grid,
  .cyber-floor,
  .cyber-streams i,
  .cyber-glow {
    animation: none;
  }

  .cyber-streams {
    display: none;
  }
}

/* Responsive */
@media (max-width: 520px) {
  body {
    padding: 1rem 0;
    align-items: flex-start;
  }

  .terminal {
    border-left: none;
    border-right: none;
  }

  .terminal-body {
    padding: 1.25rem 1rem 2rem;
  }

  .detail-row {
    grid-template-columns: 1fr;
  }

  .detail-row dt {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
  }
}