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

:root {
  --bg: #070810;
  --bg-2: #0d0f1a;
  --bg-card: #0f1220;
  --fg: #e8eaf0;
  --fg-muted: #8b8fa8;
  --fg-dim: #555870;
  --accent: #00c9a7;
  --accent-dim: rgba(0, 201, 167, 0.12);
  --accent-glow: rgba(0, 201, 167, 0.06);
  --warn: #f59e0b;
  --bad: #ff6b6b;
  --border: rgba(255,255,255,0.06);
  --border-accent: rgba(0, 201, 167, 0.2);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== Layout ===== */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 16px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.molecule {
  position: absolute;
  opacity: 0.7;
}

.molecule-1 {
  width: 360px;
  height: 360px;
  top: 8%;
  right: -40px;
}

.molecule-2 {
  width: 280px;
  height: 280px;
  bottom: 15%;
  left: -20px;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 120px 32px 100px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 6px 14px;
  margin-bottom: 32px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent); }
  50% { opacity: 0.6; box-shadow: 0 0 16px var(--accent); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6.5vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 24px;
}

.hero-lede {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 400;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 12px;
}

.hero-explainer {
  font-size: 14px;
  font-weight: 400;
  color: var(--fg-dim);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  background: var(--accent);
  color: #070810;
  border: none;
  border-radius: 10px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.1s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.btn-hero-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-hero-secondary {
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
  letter-spacing: 0.02em;
}

.btn-hero-secondary:hover {
  border-color: var(--fg-dim);
  color: var(--fg);
}

.hero-proof {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

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

.proof-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.proof-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.proof-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ===== How It Works ===== */
.how-it-works {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 240px;
}

.step-num {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.step-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.step-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.7;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 32px;
}

/* ===== Features ===== */
.features {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-top: 56px;
}

.feature-card {
  background: var(--bg-card);
  padding: 36px 32px;
  transition: background 0.2s;
}

.feature-card:hover {
  background: #13172a;
}

.feature-icon {
  margin-bottom: 20px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ===== Difference ===== */
.difference {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

.diff-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.diff-body {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.diff-quote {
  margin-top: 32px;
  padding-left: 24px;
  border-left: 2px solid var(--accent);
}

.diff-quote blockquote {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  font-style: italic;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Comparison table */
.comparison-table {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.comp-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}

.comp-col-label {
  padding: 14px 20px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  text-align: center;
}

.comp-col-guard {
  color: var(--accent);
}

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

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

.comp-label {
  padding: 14px 20px;
  font-size: 13px;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
}

.comp-val {
  padding: 14px 20px;
  font-size: 13px;
  font-weight: 500;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.comp-val-warn {
  color: var(--warn);
}

.comp-val-good {
  color: var(--accent);
}

/* ===== Closing ===== */
.closing {
  padding: 120px 0;
}

.closing-content {
  max-width: 640px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--fg);
  margin-bottom: 24px;
  text-align: left;
}

.closing-body {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.75;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

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

.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--fg);
}

.footer-tagline {
  font-size: 12px;
  color: var(--fg-dim);
}

.footer-legal {
  font-size: 11px;
  color: var(--fg-dim);
  max-width: 480px;
  text-align: right;
  line-height: 1.6;
  margin-bottom: 8px;
}

.footer-legal-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.footer-citations {
  font-size: 10px;
  color: var(--fg-dim);
  max-width: 480px;
  text-align: right;
  line-height: 1.5;
}

.citation-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.citation-link:hover {
  text-decoration: underline;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .section-inner { padding: 0 20px; }
  .hero-content { padding: 80px 20px 80px; }
  .features-grid { grid-template-columns: 1fr; }
  .diff-layout { grid-template-columns: 1fr; gap: 48px; }
  .steps { flex-direction: column; }
  .step-connector { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-legal { text-align: left; }
  .hero-proof { gap: 20px; }
  .hero-title { font-size: 36px; }
  .comparison-table { overflow-x: auto; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 30px; }
  .proof-num { font-size: 26px; }
  .comp-header, .comp-row { grid-template-columns: 140px 100px 100px; }
}

/* ===== Early Access ===== */
.early-access {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.early-access-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.ea-left {
  padding-top: 8px;
}

.ea-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 20px;
}

.ea-body {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.ea-count {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-dim);
}

.ea-testimonial {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 28px 0;
}

.testimonial-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
}

.testimonial-text {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 12px;
}

.testimonial-author {
  font-size: 12px;
  color: var(--fg-dim);
}

.ea-demo-nudge {
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 20px;
}

.demo-nudge-text {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}

.demo-nudge-sub {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
}

.ea-count-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}

/* Form */
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.form-input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-input::placeholder {
  color: var(--fg-dim);
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.btn-submit {
  background: var(--accent);
  color: #070810;
  border: none;
  border-radius: 10px;
  padding: 16px 24px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  width: 100%;
  letter-spacing: 0.02em;
}

.btn-submit:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-submit:active:not(:disabled) {
  transform: translateY(0);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-success {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  text-align: center;
  padding: 12px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
}

.form-error {
  font-size: 13px;
  color: var(--bad);
  text-align: center;
}

/* ===== Demo Section ===== */
.demo-section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

.demo-header {
  max-width: 640px;
  margin-bottom: 48px;
}

.demo-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--fg);
  margin-bottom: 12px;
}

.demo-subtitle {
  font-size: 15px;
  color: var(--fg-muted);
}

.demo-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 32px;
}

.stack-builder {
  margin-bottom: 28px;
}

.stack-inputs {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 20px;
}

.stack-input-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stack-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.stack-input {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--fg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.stack-input::placeholder {
  color: var(--fg-dim);
}

.stack-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.stack-add-btn {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 20px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.stack-add-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.stack-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  min-height: 44px;
}

.stack-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 8px 14px 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
  animation: chipIn 0.15s ease-out;
}

@keyframes chipIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.chip-remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  transition: color 0.15s;
  border-radius: 50%;
  line-height: 0;
}

.chip-remove:hover {
  color: var(--bad);
}

.stack-empty-hint {
  font-size: 13px;
  color: var(--fg-dim);
  padding: 12px 0 4px;
  display: none;
}

.demo-evaluate {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.btn-evaluate {
  background: var(--accent);
  color: #070810;
  border: none;
  border-radius: 10px;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.btn-evaluate:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-evaluate:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.demo-rules-note {
  font-size: 12px;
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.5;
}

.demo-results {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.result-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding: 16px 20px;
  border-radius: 12px;
}

.result-header.status-high_risk {
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
}

.result-header.status-caution {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.result-header.status-clear {
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
}

.result-header.status-error {
  background: var(--bg-2);
  border: 1px solid var(--border);
}

.result-status-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.result-status-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.result-label {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
}

.result-sub {
  font-size: 12px;
  color: var(--fg-muted);
}

.signals-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signal-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.signal-card.sig-high {
  border-left: 3px solid var(--bad);
}

.signal-card.sig-moderate {
  border-left: 3px solid var(--warn);
}

.signal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.signal-badge {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 100px;
  color: #070810;
}

.sig-high .signal-badge { background: var(--bad); }
.sig-moderate .signal-badge { background: var(--warn); }

.signal-type {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.signal-mechanism {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 14px;
}

.signal-entities {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.entity-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
}

.sig-cite {
  font-size: 11px;
  color: var(--fg-dim);
  font-family: monospace;
}

.no-signals {
  padding: 16px 20px;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: 12px;
}

.no-signals-text {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 6px;
}

.no-signals-sub {
  font-size: 12px;
  color: var(--fg-dim);
}

.demo-suggestions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.suggestions-label {
  font-size: 13px;
  color: var(--fg-dim);
  white-space: nowrap;
}

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.suggestion-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.suggestion-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .early-access-card {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .early-access { padding: 80px 0; }
  .demo-widget { padding: 24px 20px; }
  .stack-inputs { flex-direction: column; }
  .stack-add-btn { width: 100%; }
  .demo-evaluate { flex-wrap: wrap; }
}