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

:root {
  --bg: #f8f7f4;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b6b7b;
  --accent: #00c9a7;
  --accent-dark: #00a889;
  --border: #e4e2dc;
  --dark-surface: #1a1a2e;
  --dark-text: #f0efe9;
  --dark-muted: #8b8a9e;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
}

html { font-size: 16px; scroll-behavior: smooth; }

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

/* ─── Navigation ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 247, 244, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ─── Section Commons ─── */
.section-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 16px;
}

.section-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 48px;
}

/* ─── Hero ─── */
.hero {
  padding: 80px 0 72px;
  overflow: hidden;
}

.hero-grid {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: rgba(0, 201, 167, 0.1);
  border: 1px solid rgba(0, 201, 167, 0.25);
  padding: 5px 12px;
  border-radius: 99px;
  margin-bottom: 24px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
}

.hero-lede {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 440px;
  margin-bottom: 48px;
}

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

.stat-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 4px;
}

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

/* ─── Agent Card (Hero Visual) ─── */
.hero-visual {
  display: flex;
  justify-content: center;
}

.agent-card {
  background: var(--dark-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 24px 60px rgba(26, 26, 46, 0.18), 0 4px 12px rgba(26, 26, 46, 0.12);
}

.agent-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--dark-muted);
  margin-bottom: 16px;
}

.agent-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.agent-dot.active { animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.agent-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.message {
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.8rem;
  line-height: 1.5;
}

.message.incoming {
  background: #2a2a45;
  color: var(--dark-text);
  align-self: flex-start;
  max-width: 85%;
}

.message.outgoing {
  background: var(--accent);
  color: #0a1a16;
  font-weight: 500;
  align-self: flex-end;
  max-width: 85%;
}

.agent-footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 12px;
}

.agent-status {
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 500;
}

/* ─── How It Works ─── */
.howitworks {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.step {
  flex: 1;
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.step-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.step-arrow {
  color: var(--border);
  flex-shrink: 0;
  margin-top: 36px;
}

/* ─── Features ─── */
.features {
  padding: 88px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: rgba(0, 201, 167, 0.4);
  box-shadow: 0 8px 24px rgba(0, 201, 167, 0.06);
}

.feature-card.large {
  grid-column: span 2;
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(0, 201, 167, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-dark);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* ─── Outcomes ─── */
.outcomes {
  padding: 80px 0;
  background: var(--dark-surface);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.outcomes-left .section-label { color: var(--accent); }

.outcomes-left .section-headline { color: var(--dark-text); }

.outcomes-body {
  font-size: 1rem;
  color: var(--dark-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.outcomes-right {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.outcome-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.outcome-metric {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.outcome-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.outcome-label {
  font-size: 0.85rem;
  color: var(--dark-muted);
}

.outcome-bar {
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 99px;
  overflow: hidden;
}

.outcome-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #00e5bf);
  border-radius: 99px;
}

/* ─── Testimonials ─── */
.testimonials {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-card {
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.testimonial-quote {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.65;
  font-style: italic;
  margin-bottom: 20px;
}

.testimonial-attr {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonial-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.testimonial-role {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ─── Closing ─── */
.closing {
  padding: 100px 0;
  background: var(--bg);
  text-align: center;
}

.closing-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 32px;
}

.closing-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  background: var(--border);
  padding: 5px 14px;
  border-radius: 99px;
  margin-bottom: 28px;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.closing-final {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

/* ─── Footer ─── */
.footer {
  background: var(--text);
  padding: 48px 0;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  text-align: center;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--dark-muted);
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 0.78rem;
  color: var(--dark-muted);
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .agent-card { max-width: 100%; }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); margin: 0 auto; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card.large { grid-column: span 1; }
  .outcomes-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hero { padding: 56px 0 48px; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 1.4rem; }
  .nav-inner, .section-inner { padding: 0 20px; }
  .section-headline { font-size: 1.6rem; }
  .closing-headline { font-size: 1.8rem; }
}