:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --text: #e4e4eb;
  --text-muted: #8b8b9a;
  --primary-color: #2563eb;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --font-sans: "Outfit", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--primary-color);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-cyan); text-decoration: none; }
a:hover { color: var(--primary-color); }
.container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; }

h1, h2, h3, .brand {
  color: var(--primary-color);
}

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(139, 139, 154, 0.12);
}
.nav { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary-color);
}
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 1.5rem 4rem;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: transparent;
  pointer-events: none;
}
.hero-content { position: relative; text-align: center; }
.hero-badge { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
.hero-headline { font-size: 3rem; font-weight: 700; margin: 0 0 1rem; letter-spacing: -0.02em; color: var(--primary-color); }
.hero-subheadline { font-size: 1.2rem; color: var(--text-muted); max-width: 560px; margin: 0 auto 2rem; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primary { background: var(--primary-color); color: #fff; border: none; }
.btn-primary:hover { background: var(--accent-blue); }
.btn-secondary { background: var(--bg-card); color: var(--text); border: 1px solid rgba(139, 139, 154, 0.3); }
.btn-secondary:hover { border-color: var(--primary-color); color: var(--primary-color); }

.problem, .how-it-works, .demo { padding: 4rem 0; }
.section-title { font-size: 1.75rem; margin-bottom: 1rem; color: var(--primary-color); }
.section-intro { color: var(--text-muted); margin-bottom: 1.5rem; }
.problem-list { list-style: none; padding: 0; margin: 0; }
.problem-list li { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 0.75rem; }
.bullet { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--primary-color); margin-top: 0.5rem; flex-shrink: 0; }

.steps { display: flex; flex-direction: column; gap: 1rem; }
.step { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem; background: var(--bg-card); border-radius: var(--radius); }
.step-num { width: 2rem; height: 2rem; border-radius: 50%; background: var(--primary-color); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.9rem; flex-shrink: 0; }
.step-content h3 { margin: 0 0 0.25rem; font-size: 1rem; color: var(--primary-color); }
.step-content p { margin: 0; color: var(--text-muted); font-size: 0.9rem; }

.demo-dashboard {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(139, 139, 154, 0.2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}
.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid rgba(139, 139, 154, 0.15);
}
.demo-label { font-weight: 600; color: var(--text-muted); }
.demo-label.brand { color: var(--primary-color); }
.btn-run {
  background: var(--primary-color);
  color: #fff;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-run:hover:not(:disabled) { background: var(--accent-blue); }
.btn-run:disabled { opacity: 0.6; cursor: not-allowed; }
.demo-body { padding: 1.25rem; }

.demo-task-label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.demo-task-input {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid rgba(139, 139, 154, 0.3);
  border-radius: var(--radius);
  resize: vertical;
  margin-bottom: 1rem;
  transition: border-color 0.15s;
}
.demo-task-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
.demo-task-input::placeholder { color: var(--text-muted); }

.demo-preset-label { margin-bottom: 0.5rem; display: block; }
.demo-preset-label .demo-field-label { color: var(--text-muted); font-size: 0.9rem; }
#demo-preset {
  width: 100%;
  max-width: 100%;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid rgba(139, 139, 154, 0.3);
  border-radius: var(--radius);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b8b9a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}
#demo-preset:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}
#demo-preset option { background: var(--bg-card); color: var(--text); }
.demo-preset-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border-radius: var(--radius);
  border-left: 3px solid var(--primary-color);
  display: none;
}
.demo-preset-desc.visible { display: block; }
.demo-task-display { font-size: 0.95rem; color: var(--primary-color); margin-bottom: 0.75rem; display: none; }
.demo-task-display.visible { display: block; }
.demo-agent-plan { margin-bottom: 1rem; display: none; }
.demo-agent-plan.visible { display: block; }
.assessment-heading { font-size: 0.95rem; margin: 0 0 0.5rem; color: var(--primary-color); }
.agent-plan-steps { list-style: none; padding: 0; margin: 0; font-size: 0.9rem; font-family: var(--font-mono); }
.agent-plan-steps .plan-step { padding: 0.35rem 0; color: var(--text-muted); border-left: 3px solid transparent; padding-left: 0.5rem; }
.agent-plan-steps .plan-step-current { color: var(--primary-color); border-left-color: var(--primary-color); font-weight: 500; }
.demo-current-step { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0.75rem; display: none; }
.demo-current-step.visible { display: block; }
.demo-current-step.step-allow { color: var(--success); }
.demo-current-step.step-warn { color: var(--warning); }
.demo-current-step.step-block { color: var(--danger); }
.demo-neolayer-assessment { margin-bottom: 1rem; padding: 1rem; background: var(--bg); border-radius: var(--radius); border: 1px solid rgba(139, 139, 154, 0.2); display: none; }
.demo-neolayer-assessment.visible { display: block; }
.assessment-row { margin-bottom: 0.5rem; font-size: 0.9rem; }
.assessment-label { display: inline-block; min-width: 120px; color: var(--text-muted); }
.assessment-value { color: var(--text); }
.assessment-explanation { font-size: 0.9rem; color: var(--text-muted); margin: 0.5rem 0; }
.assessment-risk-factors { margin: 0.5rem 0 0 1.25rem; padding: 0; font-size: 0.85rem; color: var(--text-muted); }
.demo-advanced { margin-bottom: 1rem; }
.btn-toggle {
  background: var(--bg);
  color: var(--primary-color);
  border: 1px solid rgba(139, 139, 154, 0.3);
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: var(--radius);
  transition: border-color 0.15s, background 0.15s;
}
.btn-toggle:hover { border-color: var(--primary-color); background: rgba(37, 99, 235, 0.08); }
.demo-advanced-fields {
  display: none;
  margin-top: 0.75rem;
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.2);
}
.demo-advanced-fields.visible { display: block; }
.demo-field { display: block; margin-bottom: 0.75rem; }
.demo-field:last-child { margin-bottom: 0; }
.demo-field-label { display: inline-block; min-width: 100px; font-size: 0.85rem; color: var(--text-muted); }
.demo-field select {
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid rgba(139, 139, 154, 0.3);
  border-radius: var(--radius);
}
.demo-field select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.demo-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.15);
}
.demo-meta code {
  background: var(--bg-card);
  color: var(--accent-cyan);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  font-size: 0.85em;
}
.demo-risk-timeline { margin-bottom: 1rem; }
.demo-risk-bar {
  height: 10px;
  background: var(--bg);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(139, 139, 154, 0.2);
}
.demo-risk-fill { height: 100%; border-radius: 5px; transition: width 0.3s ease; }
.demo-risk-allow { background: var(--success); }
.demo-risk-warn { background: var(--warning); }
.demo-risk-block { background: var(--danger); }
.demo-risk-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-family: var(--font-mono);
}
.demo-log {
  max-height: 220px;
  overflow-y: auto;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  border: 1px solid rgba(139, 139, 154, 0.15);
}
.demo-log-entry { display: flex; gap: 0.5rem; margin-bottom: 0.25rem; }
.demo-log-entry .log-time { color: var(--text-muted); flex-shrink: 0; }
.demo-log-entry .log-level { flex-shrink: 0; min-width: 4ch; }
.demo-log-entry.info .log-level { color: var(--success); }
.demo-log-entry.warn .log-level { color: var(--warning); }
.demo-log-entry.block .log-level { color: var(--danger); }
.demo-explanation-panel {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.2);
  display: none;
}
.demo-explanation-panel.visible { display: block; }
.explanation-title { margin: 0 0 0.5rem; font-size: 1rem; color: var(--primary-color); }
.explanation-intro { font-size: 0.85rem; color: var(--text-muted); margin: 0 0 0.75rem; }
.explanation-human { font-size: 0.9rem; color: var(--text); margin-bottom: 0.75rem; }
.explanation-risk-factors { margin: 0.5rem 0 0.75rem 1.25rem; font-size: 0.9rem; color: var(--text-muted); }
.explanation-signals, .explanation-breakdown { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.explanation-technical-details { margin-top: 0.75rem; font-size: 0.85rem; color: var(--text-muted); }
.explanation-technical-details summary { cursor: pointer; font-weight: 500; color: var(--primary-color); }
.explanation-json { margin-top: 0.5rem; padding: 0.75rem; background: var(--bg); border: 1px solid rgba(139, 139, 154, 0.2); border-radius: var(--radius); font-family: var(--font-mono); font-size: 0.75rem; overflow-x: auto; white-space: pre-wrap; word-break: break-word; max-height: 200px; overflow-y: auto; }
.demo-alert {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius);
  display: none;
}
.demo-alert.visible { display: flex; gap: 0.75rem; align-items: flex-start; }
.alert-icon { color: var(--danger); font-weight: 700; }
.demo-review-panel {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.2);
  display: none;
}
.demo-review-panel.visible { display: block; }
.review-panel-title { margin: 0 0 0.75rem; font-size: 1rem; color: var(--primary-color); }
.review-row { margin-bottom: 0.5rem; }
.review-label { display: inline-block; min-width: 120px; color: var(--text-muted); font-size: 0.9rem; }
.review-decision { margin-top: 0.75rem; font-weight: 600; color: var(--text); }

.demo-trace-replay-section {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(139, 139, 154, 0.2);
}
.trace-replay-intro {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.trace-replay-input {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid rgba(139, 139, 154, 0.3);
  border-radius: var(--radius);
  resize: vertical;
  margin-bottom: 0.75rem;
}
.trace-replay-input:focus {
  outline: none;
  border-color: var(--primary-color);
}
.trace-replay-actions {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.trace-replay-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.15);
  margin-bottom: 0.75rem;
}
.trace-replay-meta code { background: var(--bg-card); color: var(--accent-cyan); padding: 0.2rem 0.4rem; border-radius: 4px; font-size: 0.85em; }
.trace-replay-report {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.2);
  white-space: pre-wrap;
  word-break: break-word;
}
.trace-replay-log {
  margin-top: 0.75rem;
  max-height: 160px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.5rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid rgba(139, 139, 154, 0.15);
}

.site-footer { padding: 2rem 0; border-top: 1px solid rgba(139, 139, 154, 0.12); text-align: center; color: var(--text-muted); font-size: 0.9rem; }