:root {
  --bg-dark: #0a0a0a;
  --bg-surface: #141414;
  --bg-card: #1a1a1a;
  --fg: #f0f0f0;
  --fg-dim: #8a8a8a;
  --fg-muted: #555;
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --accent-bright: #fbbf24;
  --danger: #ef4444;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-w: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-dark);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  width: 100%;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 8px 18px;
  border-radius: 4px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 28px;
  max-width: 800px;
}

.hero-sub {
  font-size: 19px;
  line-height: 1.7;
  color: var(--fg-dim);
  max-width: 600px;
  margin-bottom: 48px;
}

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

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

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.hero-stat-label {
  font-size: 13px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.hero-stat-divider {
  width: 1px;
  height: 48px;
  background: var(--fg-muted);
  opacity: 0.3;
}

.hero-gradient {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
  background: var(--bg-surface);
}

.problem-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.problem-label,
.how-label,
.numbers-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.problem h2,
.how h2,
.numbers h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 48px;
  max-width: 700px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 36px 28px;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: rgba(245, 158, 11, 0.2);
}

.problem-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

.problem-card p {
  color: var(--fg-dim);
  font-size: 15px;
  line-height: 1.6;
}

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
  background: var(--bg-dark);
}

.how-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.how-step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.how-step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: rgba(245, 158, 11, 0.2);
  min-width: 80px;
  line-height: 1;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-content p {
  color: var(--fg-dim);
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
}

/* ---- NUMBERS ---- */
.numbers {
  padding: 100px 24px;
  background: var(--bg-surface);
}

.numbers-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.numbers-text {
  margin-bottom: 48px;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.number-card {
  background: var(--bg-dark);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 40px 28px;
  text-align: center;
}

.number-val {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 14px;
}

.number-desc {
  color: var(--fg-dim);
  font-size: 15px;
  line-height: 1.5;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  background: var(--bg-dark);
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 28px;
}

.closing p {
  color: var(--fg-dim);
  font-size: 18px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.closing-accent {
  color: var(--accent) !important;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px !important;
}

/* ---- DEMO ---- */
.demo {
  padding: 100px 24px;
  background: var(--bg-dark);
}

.demo-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

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

.demo-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.demo-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 16px;
  max-width: 700px;
}

.demo-sub {
  color: var(--fg-dim);
  font-size: 16px;
  max-width: 580px;
  line-height: 1.6;
}

.demo-scenarios {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.scenario-btn {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 20px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.scenario-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.demo-custom-input {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  align-items: flex-start;
}

.demo-custom-input textarea {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  resize: none;
  outline: none;
  transition: border-color 0.2s;
}

.demo-custom-input textarea:focus {
  border-color: var(--accent);
}

.btn-accent {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

.btn-accent:hover {
  background: var(--accent-bright);
}

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

.demo-chat {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-width: 700px;
}

.demo-chat-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: var(--bg-surface);
}

.demo-chat-avatar {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: #000;
  flex-shrink: 0;
}

.demo-chat-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
}

.demo-chat-status {
  font-size: 12px;
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.demo-status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: #22c55e;
  border-radius: 50%;
}

.demo-restart-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--fg-dim);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.demo-restart-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.demo-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 280px;
  max-height: 380px;
}

.demo-message {
  display: flex;
}

.demo-message--user {
  justify-content: flex-end;
}

.demo-message--assistant {
  justify-content: flex-start;
}

.demo-bubble {
  max-width: 75%;
  padding: 11px 16px;
  border-radius: 14px;
  font-size: 15px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.demo-message--user .demo-bubble {
  background: var(--accent);
  color: #000;
  font-weight: 500;
  border-bottom-right-radius: 4px;
}

.demo-message--assistant .demo-bubble {
  background: var(--bg-surface);
  color: var(--fg);
  border-bottom-left-radius: 4px;
}

.demo-typing {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.demo-typing span {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--fg-muted);
  border-radius: 50%;
  animation: typing-bounce 1.2s infinite;
}

.demo-typing span:nth-child(2) { animation-delay: 0.2s; }
.demo-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40% { transform: translateY(-6px); opacity: 1; }
}

.demo-input-row {
  display: flex;
  gap: 10px;
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
  background: var(--bg-surface);
}

.demo-input-row input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}

.demo-input-row input:focus {
  border-color: var(--accent);
}

.demo-send-btn {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 0.2s;
}

.demo-send-btn:hover:not(:disabled) {
  background: var(--accent-bright);
}

.demo-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.demo-result {
  margin-top: 40px;
  max-width: 700px;
}

.demo-result-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.25);
  padding: 6px 14px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.demo-result-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
}

.demo-result-card {
  background: var(--bg-card);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 14px;
  padding: 28px;
  margin-bottom: 40px;
}

.demo-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
  margin-bottom: 20px;
}

.demo-result-field--full {
  grid-column: 1 / -1;
}

.demo-result-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.demo-result-value {
  font-size: 16px;
  font-weight: 500;
  color: var(--fg);
}

.demo-result-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 16px;
}

.demo-result-time {
  font-size: 13px;
  color: #22c55e;
}

.demo-waitlist {
  background: var(--bg-surface);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 14px;
  padding: 36px;
  text-align: center;
}

.demo-waitlist-headline {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.demo-waitlist-sub {
  color: var(--fg-dim);
  font-size: 15px;
  margin-bottom: 24px;
}

.demo-waitlist-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.demo-waitlist-form input {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  width: 200px;
  outline: none;
  transition: border-color 0.2s;
}

.demo-waitlist-form input:focus {
  border-color: var(--accent);
}

.demo-waitlist-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.demo-waitlist-check {
  width: 48px;
  height: 48px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #22c55e;
}

.demo-waitlist-success p {
  color: var(--fg-dim);
  font-size: 16px;
}

@media (max-width: 768px) {
  .demo-scenarios {
    flex-direction: column;
  }
  .demo-custom-input {
    flex-direction: column;
  }
  .demo-result-grid {
    grid-template-columns: 1fr;
  }
  .demo-waitlist-form {
    flex-direction: column;
    align-items: center;
  }
  .demo-waitlist-form input {
    width: 100%;
    max-width: 320px;
  }
}

/* ---- NAV ---- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.site-nav-brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}

.site-nav-brand span { color: var(--accent); }

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav-links a {
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
}

.site-nav-links a:hover { color: var(--fg); }

.site-nav-pricing {
  background: var(--accent);
  color: #000 !important;
  font-family: var(--font-display);
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 14px !important;
  transition: background 0.2s !important;
}

.site-nav-pricing:hover {
  background: var(--accent-bright);
  color: #000 !important;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 40px 24px;
  background: var(--bg-surface);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 14px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .problem-grid,
  .numbers-grid {
    grid-template-columns: 1fr;
  }

  .hero-stat-row {
    gap: 20px;
  }

  .hero-stat-divider {
    display: none;
  }

  .how-step {
    flex-direction: column;
    gap: 12px;
  }

  .step-num {
    font-size: 36px;
    min-width: auto;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero {
    min-height: 70vh;
    padding: 60px 20px 40px;
  }
}