:root {
  --bg: #0f172a;
  --bg-alt: #131c33;
  --card: #182140;
  --border: #2a3454;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #f97316;
  --accent-hover: #fb923c;
  --error: #f87171;
  --success: var(--accent);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

h1, h2, h3 {
  line-height: 1.15;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: inherit;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 720px;
}

/* Nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid transparent;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.wordmark {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

/* Buttons */

.btn {
  display: inline-block;
  background: var(--accent);
  color: #1a1205;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 12px 22px;
  cursor: pointer;
  text-decoration: none;
  font-size: 1rem;
  transition: background 0.15s ease;
}

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

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

.btn-small {
  padding: 8px 16px;
  font-size: 0.9rem;
}

/* Hero */

.hero {
  padding: 64px 0 80px;
}

.hero-inner {
  max-width: 640px;
}

.hero h1 {
  font-size: 2.6rem;
}

.hero .lead {
  font-size: 1.15rem;
  color: var(--text-muted);
}

/* Forms */

.signup-form {
  display: flex;
  gap: 10px;
}

.signup-form input[type="email"] {
  flex: 1;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 1rem;
}

.signup-form input[type="email"]::placeholder {
  color: var(--text-muted);
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.form-note {
  margin-top: 10px;
  min-height: 1.2em;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.form-note.success {
  color: var(--success);
}

.form-note.error {
  color: var(--error);
}

/* Chat mockup */

.chat-mockup {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.chat-msg {
  max-width: 90%;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 0.95rem;
}

.chat-msg-user {
  align-self: flex-end;
  background: var(--card);
  color: var(--text);
}

.chat-msg-agent {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--text);
}

.chat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 4px;
}

.chat-chips {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.chip {
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: default;
}

.chip-approve {
  background: var(--accent);
  color: #1a1205;
}

.chip-edit {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}

/* Push-to-talk indicator */

.chat-input-bar {
  display: flex;
  justify-content: center;
  padding-top: 14px;
  margin-top: 4px;
  border-top: 1px solid var(--border);
}

.mic-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #1a1205;
  border: none;
  border-radius: 999px;
  padding: 10px 20px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: default;
}

.mic-button svg {
  width: 18px;
  height: 18px;
}

.mic-ring {
  position: absolute;
  inset: -4px;
  border-radius: 999px;
  border: 2px solid var(--accent);
  opacity: 0.6;
  animation: mic-pulse 1.8s ease-out infinite;
}

@keyframes mic-pulse {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.35);
    opacity: 0;
  }
}

/* Features */

.features {
  padding: 80px 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
}

.feature-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 1.15rem;
}

.feature-card p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Example interaction */

.example {
  padding: 0 0 80px;
  text-align: center;
}

.example h2 {
  font-size: 1.8rem;
}

.chat-mockup-full {
  text-align: left;
  margin-top: 32px;
}

/* CTA */

.cta {
  padding: 64px 0;
}

.cta-inner {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  text-align: center;
}

.cta h2 {
  font-size: 1.6rem;
}

.cta .signup-form {
  justify-content: center;
  max-width: 440px;
  margin: 0 auto;
}

.cta .form-note {
  text-align: center;
}

/* Footer */

.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-inner {
  text-align: center;
}

.footer .wordmark {
  display: block;
  color: var(--text);
  margin-bottom: 12px;
}

.copyright {
  margin: 0;
  opacity: 0.7;
}

/* Responsive */

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .signup-form {
    flex-direction: column;
  }
}