/* ═══════════════════════════════════════════════════════════
   BTC Doctor — CRT Terminal Theme
   ═══════════════════════════════════════════════════════════ */

/* ─── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0a0a;
  --green:      #00ff41;
  --green-dim:  #008a1e;
  --green-bg:   rgba(0, 255, 65, 0.06);
  --warning:    #ffb000;
  --danger:     #ff3333;
  --clean:      #00cc66;
  --text:       #c0c0c0;
  --text-dim:   #555;
  --border:     #1a1a1a;
  --font-ui:    'Press Start 2P', monospace;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;
  --radius:     0;
  --scan-speed: 0.4s;
}

html {
  font-size: 15px;
  background: var(--bg);
  color: var(--green);
  font-family: var(--font-mono);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background: var(--bg);
  overflow-x: hidden;
}

#app {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 0;
  position: relative;
}

/* ─── CRT Scanline Overlay ─────────────────────────────── */
.crt-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* ─── Typography ────────────────────────────────────────── */
.mono { font-family: var(--font-mono); }
.dim { color: var(--green-dim); }
.nowrap { white-space: nowrap; }

a { color: var(--green); }
a:hover { color: var(--text); }

/* ─── Header ────────────────────────────────────────────── */
.terminal-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.drone-logo {
  flex-shrink: 0;
}

.app-title {
  font-family: var(--font-ui);
  font-size: 1.2rem;
  color: var(--green);
  letter-spacing: 3px;
  line-height: 1.3;
  margin: 0;
}

.app-subtitle {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--green-dim);
  letter-spacing: 1px;
  margin: 4px 0 0;
}

.header-buttons {
  display: flex;
  gap: 8px;
}

/* ─── Terminal Buttons ──────────────────────────────────── */
.terminal-btn {
  font-family: var(--font-ui);
  font-size: 0.55rem;
  color: var(--green-dim);
  background: none;
  border: 1px solid var(--border);
  padding: 8px 12px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.terminal-btn:hover,
.terminal-btn:focus-visible {
  color: var(--green);
  border-color: var(--green);
  background: var(--green-bg);
  outline: none;
}

.terminal-btn:active {
  color: var(--text);
}

/* ─── Overlays ───────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

.overlay[hidden] { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.overlay-content {
  position: relative;
  max-width: 680px;
  width: 100%;
  border: 1px solid var(--border);
  padding: 32px 28px;
}

.overlay-close {
  position: absolute;
  top: 8px;
  right: 12px;
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--green-dim);
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
}

.overlay-close:hover { color: var(--green); }

.robot-voice {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--green);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ─── Input Section ─────────────────────────────────────── */
.input-section {
  margin-bottom: 20px;
}

.prompt-line {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.prompt-prefix {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--green);
}

.prompt-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
}

.input-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.btc-input {
  flex: 1;
  background: #000;
  border: 1px solid var(--border);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 12px 14px;
  transition: border-color 0.2s;
}

.btc-input::placeholder { color: var(--text-dim); }
.btc-input:focus { outline: none; border-color: var(--green); }

.btc-textarea {
  resize: vertical;
  min-height: 80px;
  font-size: 0.85rem;
}

.primary-btn {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  color: #000;
  background: var(--green);
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: opacity 0.2s;
  white-space: nowrap;
}

.primary-btn:hover { opacity: 0.85; }
.primary-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.secondary-btn {
  font-family: var(--font-ui);
  font-size: 0.55rem;
  color: var(--green-dim);
  background: none;
  border: 1px solid var(--border);
  padding: 12px 14px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

.secondary-btn:hover:not(:disabled) {
  color: var(--green);
  border-color: var(--green);
}

.secondary-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.input-help {
  font-size: 0.75rem;
  color: var(--green-dim);
  margin-top: 8px;
}

.link-btn {
  font-family: inherit;
  font-size: inherit;
  color: var(--green);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.link-btn:hover { color: var(--text); }

.batch-area {
  margin-top: 12px;
  animation: fadeIn 0.2s ease;
}

/* ─── Scan Output ────────────────────────────────────────── */
.scan-output {
  background: #000;
  border: 1px solid var(--border);
  padding: 16px;
  min-height: 60px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  line-height: 1.7;
}

.scan-line {
  opacity: 0;
  animation: typeIn var(--scan-speed) ease forwards;
}

.scan-line.scan-line-dim { color: var(--green-dim); }
.scan-line.scan-line-warn { color: var(--warning); }
.scan-line.scan-line-err  { color: var(--danger); }
.scan-line.scan-line-ok   { color: var(--green); }
.scan-line.scan-line-done { color: var(--text); }

.scan-line.static {
  opacity: 1;
  animation: none;
}

@keyframes typeIn {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Results Area ───────────────────────────────────────── */
.results-area {
  margin-bottom: 24px;
}

/* Summary card */
.results-summary {
  border: 1px solid var(--border);
  padding: 16px;
  margin-bottom: 16px;
}

.summary-decision {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.decision-clean { color: var(--clean); }
.decision-flag   { color: var(--warning); }
.decision-block  { color: var(--danger); }

.summary-stats {
  display: flex;
  gap: 24px;
  font-size: 0.8rem;
  color: var(--text);
}

.stat-item { display: flex; gap: 6px; }

/* Cluster info */
.cluster-info {
  font-size: 0.8rem;
  color: var(--text);
  margin-bottom: 16px;
  border: 1px solid var(--border);
  padding: 12px;
}

.cluster-info .mono { color: var(--green); }

/* Section headings */
.section-title {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  color: var(--text);
  letter-spacing: 1px;
  margin: 20px 0 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

/* UTXO cards */
.utxo-item {
  border: 1px solid var(--border);
  padding: 12px;
  margin-bottom: 8px;
  font-size: 0.8rem;
}

.utxo-item.utxo-clean { border-left: 3px solid var(--clean); }
.utxo-item.utxo-flagged { border-left: 3px solid var(--warning); }
.utxo-item.utxo-blocked { border-left: 3px solid var(--danger); }

.utxo-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.utxo-badge {
  font-family: var(--font-ui);
  font-size: 0.5rem;
  letter-spacing: 1px;
  padding: 3px 6px;
}

.badge-clean { color: #000; background: var(--clean); }
.badge-flagged { color: #000; background: var(--warning); }
.badge-blocked { color: #fff; background: var(--danger); }

.utxo-amount {
  font-family: var(--font-mono);
  font-weight: 600;
}

.utxo-detail { margin-top: 2px; }
.utxo-txid, .utxo-counterparty { word-break: break-all; }
.utxo-source { color: var(--green-dim); }

/* Recommendation */
.recommendation {
  border: 1px solid var(--warning);
  background: rgba(255, 176, 0, 0.06);
  padding: 14px;
  margin: 16px 0;
  font-size: 0.85rem;
  color: var(--warning);
}

.recommendation.recommendation-ok {
  border-color: var(--clean);
  background: rgba(0, 204, 102, 0.06);
  color: var(--clean);
}

.recommendation.recommendation-block {
  border-color: var(--danger);
  background: rgba(255, 51, 51, 0.06);
  color: var(--danger);
}

/* Graph container */
.graph-container {
  border: 1px solid var(--border);
  padding: 10px;
  margin: 16px 0;
  background: #000;
  overflow: hidden;
}

.graph-container svg {
  display: block;
  width: 100%;
  height: auto;
}

.graph-container .node-label {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--green-dim);
}

.graph-container .node-label.user { fill: var(--green); font-weight: 600; }
.graph-container .node-label.flagged { fill: var(--danger); }
.graph-container .node-label.exchange { fill: var(--text-dim); }
.graph-container .link { stroke: var(--border); stroke-width: 1; }
.graph-container .link.flagged { stroke: var(--warning); stroke-width: 1.5; }
.graph-container .link.exchange { stroke: var(--text-dim); stroke-dasharray: 3 2; }

/* Deep scan toggle area */
.deep-area {
  margin: 12px 0;
}

/* ─── Footer ─────────────────────────────────────────────── */
.terminal-footer {
  border-top: 1px solid var(--border);
  padding: 16px 0 24px;
  font-size: 0.75rem;
  color: var(--green-dim);
}

.donation-line {
  margin-bottom: 8px;
  line-height: 1.6;
}

.donation-addr {
  font-family: var(--font-mono);
  color: var(--green);
  word-break: break-all;
}

.footer-disclaimer {
  color: var(--text-dim);
  line-height: 1.5;
}

.footer-version {
  display: block;
  margin-top: 4px;
  color: var(--text-dim);
  font-size: 0.65rem;
}

/* ─── Loading spinner ────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid var(--green-dim);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Error message ──────────────────────────────────────── */
.error-box {
  border: 1px solid var(--danger);
  background: rgba(255, 51, 51, 0.06);
  padding: 14px;
  margin: 12px 0;
  color: var(--danger);
  font-size: 0.85rem;
}

.error-box .retry-btn {
  font-family: var(--font-ui);
  font-size: 0.55rem;
  color: var(--danger);
  background: none;
  border: 1px solid var(--danger);
  padding: 6px 10px;
  margin-top: 8px;
  cursor: pointer;
  letter-spacing: 1px;
}

.error-box .retry-btn:hover {
  background: rgba(255, 51, 51, 0.1);
}

/* ─── Print Styles ───────────────────────────────────────── */
@media print {
  .crt-overlay { display: none; }
  .header-buttons { display: none; }
  .input-section { display: none; }
  .scan-output { display: none; }
  .primary-btn, .secondary-btn, .link-btn { display: none; }
  body { background: #fff !important; color: #000 !important; }
  .app-title { color: #000 !important; }
  .results-area { display: block !important; }
  .utxo-item { border-color: #ccc !important; }
  .terminal-footer { border-top-color: #ccc !important; }
  .graph-container { border-color: #ccc !important; }
  .recommendation { border-color: #999 !important; }
  #app { max-width: 100%; padding: 0; }
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 640px) {
  #app { padding: 16px 12px 0; }
  .input-row { flex-wrap: wrap; }
  .btc-input { min-width: 100%; }
  .primary-btn, .secondary-btn { flex: 1; justify-content: center; }
  .app-title { font-size: 1rem; }
  .app-subtitle { font-size: 0.5rem; }
  .drone-logo { width: 36px; height: 36px; }
  .logo-area { gap: 10px; }
  .header-buttons { flex-wrap: wrap; }
  .terminal-btn { font-size: 0.5rem; padding: 6px 10px; }
  .utxo-header { flex-direction: column; align-items: flex-start; gap: 4px; }
  .summary-stats { flex-wrap: wrap; gap: 12px; }
  .overlay-content { padding: 20px 16px; }
  .robot-voice { font-size: 0.8rem; }
}

/* ─── Utility ────────────────────────────────────────────── */
[hidden] { display: none !important; }