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

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

body {
  background: #0a0a0a;
  color: #00ff88;
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a0a0a; }
::-webkit-scrollbar-thumb { background: #ff3333; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #cc0000; }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
}

.terminal {
  border: 1px solid #00ff88;
  border-radius: 6px;
  overflow: hidden;
  background: #0d0d0d;
  box-shadow: 0 0 20px rgba(0,255,136,0.05);
}

.terminal-header {
  background: #1a1a1a;
  padding: 10px 16px;
  border-bottom: 1px solid #00ff88;
  display: flex;
  align-items: center;
  gap: 12px;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.r { background: #ff3333; }
.terminal-dot.y { background: #ffaa00; }
.terminal-dot.g { background: #00ff88; }

.terminal-title {
  color: #888;
  font-size: 12px;
  letter-spacing: 1px;
  flex: 1;
}

.terminal-body {
  padding: 24px;
  min-height: 400px;
}

.prompt { color: #ff3333; font-weight: 700; }
.prompt-cyan { color: #00ccff; }
.prompt-green { color: #00ff88; }

.main-title {
  color: #00ccff;
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin: 16px 0;
  letter-spacing: 2px;
}

.objective-box {
  background: #111;
  border: 1px solid #ffaa00;
  border-left: 3px solid #ffaa00;
  padding: 12px 16px;
  margin: 12px 0;
  color: #ccc;
  font-size: 13px;
}

.key { color: #ff3333; font-weight: 700; }
.val { color: #00ff88; }
.val-cyan { color: #00ccff; }

.divider {
  border: none;
  border-top: 1px solid #ff3333;
  margin: 20px 0;
  opacity: 0.3;
}

.section-title {
  color: #ff3333;
  font-weight: 700;
  font-size: 16px;
  margin: 24px 0 12px 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.section-title::before {
  content: '# ';
  color: #00ccff;
}

.controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  background: transparent;
  border: 1px solid #00ff88;
  color: #00ff88;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 3px;
  transition: all 0.2s;
  letter-spacing: 1px;
}

.btn:hover:not(:disabled) {
  background: #00ff88;
  color: #0a0a0a;
}

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

.btn-primary {
  border-color: #00ccff;
  color: #00ccff;
}

.btn-primary:hover:not(:disabled) {
  background: #00ccff;
  color: #0a0a0a;
}

.btn-accent {
  border-color: #ffaa00;
  color: #ffaa00;
}

.btn-accent:hover:not(:disabled) {
  background: #ffaa00;
  color: #0a0a0a;
}

.btn-accent.active {
  background: #ffaa00;
  color: #0a0a0a;
}

.btn-red {
  border-color: #ff3333;
  color: #ff3333;
}

.btn-red:hover:not(:disabled) {
  background: #ff3333;
  color: #0a0a0a;
}

.params {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.param {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.param label {
  font-size: 11px;
  color: #888;
}

.param input[type="range"] {
  width: 140px;
  accent-color: #00ff88;
}

.status-bar {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
}

.population {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pop-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 10px;
  border-radius: 3px;
  transition: background 0.2s;
}

.pop-row:hover {
  background: #111;
}

.pop-row.best {
  background: rgba(0,255,136,0.08);
  border: 1px solid rgba(0,255,136,0.3);
}

.pop-row.selected {
  background: rgba(0,204,255,0.1);
  border: 1px solid rgba(0,204,255,0.3);
}

.pop-row.parent {
  background: rgba(255,170,0,0.1);
  border: 1px solid rgba(255,170,0,0.3);
}

.pop-row.child {
  background: rgba(255,51,51,0.1);
  border: 1px solid rgba(255,51,51,0.3);
}

.pop-row.replaced {
  animation: replaceFlash 0.6s ease;
}

@keyframes replaceFlash {
  0% { background: rgba(255,51,51,0.3); }
  100% { background: transparent; }
}

.pop-index {
  color: #555;
  font-size: 11px;
  width: 20px;
  text-align: right;
}

.pop-bits {
  display: flex;
  gap: 3px;
}

.bit {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #333;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 700;
  transition: all 0.3s;
}

.bit-one {
  background: #00ff88;
  color: #0a0a0a;
  border-color: #00ff88;
  box-shadow: 0 0 6px rgba(0,255,136,0.3);
}

.bit-zero {
  background: #1a1a1a;
  color: #444;
  border-color: #333;
}

.bit.mutated {
  animation: bitMutate 0.5s ease;
}

@keyframes bitMutate {
  0% { transform: scale(1); }
  25% { transform: scale(1.3); background: #ff3333; color: #fff; border-color: #ff3333; }
  50% { transform: scale(1.3); background: #ffaa00; color: #0a0a0a; border-color: #ffaa00; }
  100% { transform: scale(1); }
}

.bit.crossover-left {
  border-left: 2px solid #ff3333;
}

.bit.crossover-right {
  border-right: 2px solid #ff3333;
}

.pop-fitness {
  color: #888;
  font-size: 12px;
  min-width: 60px;
}

.pop-fitness-bar {
  width: 100px;
  height: 8px;
  background: #1a1a1a;
  border-radius: 4px;
  overflow: hidden;
}

.pop-fitness-fill {
  height: 100%;
  background: linear-gradient(90deg, #ff3333, #ffaa00, #00ff88);
  border-radius: 4px;
  transition: width 0.4s ease;
}

.pop-label {
  color: #555;
  font-size: 10px;
  min-width: 50px;
}

#fitness-chart {
  width: 100%;
  border: 1px solid #222;
  border-radius: 3px;
  background: #0d0d0d;
}

.log {
  background: #0d0d0d;
  border: 1px solid #222;
  border-radius: 3px;
  padding: 12px;
  max-height: 200px;
  overflow-y: auto;
  font-size: 12px;
}

.log-line {
  margin-bottom: 2px;
  line-height: 1.4;
}

.log-line .prompt-cyan { margin-right: 6px; }

.flow-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 16px 0;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px;
  border: 1px solid #333;
  border-radius: 6px;
  min-width: 80px;
  transition: all 0.3s;
}

.flow-step.active {
  border-color: #00ff88;
  background: rgba(0,255,136,0.08);
  box-shadow: 0 0 10px rgba(0,255,136,0.2);
}

.flow-step.done {
  border-color: #00ccff;
  background: rgba(0,204,255,0.08);
}

.flow-icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #555;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  color: #888;
}

.flow-step.active .flow-icon {
  border-color: #00ff88;
  color: #00ff88;
}

.flow-step.done .flow-icon {
  border-color: #00ccff;
  color: #00ccff;
}

.flow-label {
  font-size: 10px;
  color: #666;
  text-align: center;
  line-height: 1.3;
}

.flow-step.active .flow-label { color: #00ff88; }
.flow-step.done .flow-label { color: #00ccff; }

.flow-arrow {
  color: #333;
  font-size: 18px;
}

.footer {
  text-align: center;
  padding: 20px;
  color: #444;
  font-size: 12px;
  border-top: 1px solid #1a1a1a;
  margin-top: 30px;
}

.footer a {
  color: #00ccff;
  text-decoration: none;
}

.footer a:hover { text-decoration: underline; }

.prompt-red { color: #ff3333; }

.solution-found {
  text-align: center;
  padding: 20px;
  border: 2px solid #00ff88;
  border-radius: 6px;
  background: rgba(0,255,136,0.05);
  margin: 16px 0;
  animation: solutionPulse 1s ease infinite;
}

@keyframes solutionPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0,255,136,0.2); }
  50% { box-shadow: 0 0 30px rgba(0,255,136,0.4); }
}

.solution-found .big-text {
  font-size: 24px;
  color: #00ff88;
  font-weight: 700;
}

.solution-found .sub-text {
  font-size: 14px;
  color: #888;
  margin-top: 8px;
}

@media (max-width: 600px) {
  .terminal-body { padding: 16px; }
  .ascii-box { font-size: 8px; }
  .container { padding: 10px; }
  .terminal-title { font-size: 10px; }
  .controls { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .params { flex-direction: column; }
  .status-bar { flex-direction: column; gap: 8px; }
  .flow-diagram { gap: 4px; }
  .flow-step { min-width: 60px; padding: 6px; }
  .bit { width: 24px; height: 24px; font-size: 12px; }
}