:root {
  --bg: #0f0f17;
  --surface: #16161f;
  --surface-2: #1e1e28;
  --fg: #f0ece6;
  --fg-muted: #8a8a9a;
  --accent: #f5a623;
  --accent-dim: #a8731a;
  --border: #2a2a36;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
}

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

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

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

/* NAV */
.nav {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 28px 64px;
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-tagline {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 80px;
  align-items: center;
  padding: 96px 64px 80px;
  border-bottom: 1px solid var(--border);
}
.hero-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 4.5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  color: var(--fg);
}
.hero-lede {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 480px;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
}
.stat {
  padding: 0 28px;
}
.stat:first-child { padding-left: 0; }
.stat-value {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stat-sep {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* INBOX MOCK */
.inbox-mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.mock-header {
  background: var(--surface-2);
  padding: 12px 18px;
  font-size: 0.75rem;
  color: var(--fg-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mock-header::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3ecf8e;
}
.mock-thread { padding: 20px 18px; display: flex; flex-direction: column; gap: 14px; }
.mock-msg {
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.8rem;
  line-height: 1.55;
}
.mock-msg--reply {
  background: var(--surface-2);
  color: var(--fg);
  border-bottom-left-radius: 4px;
}
.mock-msg--sent {
  background: var(--accent-dim);
  color: var(--fg);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  max-width: 75%;
}

/* PROOF STEPS */
.proof { padding: 72px 64px; border-bottom: 1px solid var(--border); }
.proof-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 48px;
}
.proof-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.proof-step {
  padding: 0 36px 0 0;
  border-right: 1px solid var(--border);
}
.proof-step:last-child { border-right: none; }
.step-num {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  color: var(--accent-dim);
  margin-bottom: 16px;
  opacity: 0.6;
}
.step-body h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}
.step-body p { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.65; }

/* FEATURES */
.features { padding: 72px 64px; border-bottom: 1px solid var(--border); }
.features-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 40px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 24px;
}
.feature-icon {
  color: var(--accent);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.feature-card p { font-size: 0.82rem; color: var(--fg-muted); line-height: 1.6; }

/* MANIFESTO */
.manifesto {
  padding: 96px 64px;
  border-bottom: 1px solid var(--border);
}
.manifesto-inner { max-width: 820px; }
.manifesto blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  line-height: 1.4;
  color: var(--fg);
  font-style: italic;
  margin-bottom: 24px;
  border-left: 3px solid var(--accent);
  padding-left: 28px;
}
.manifesto-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  padding-left: 31px;
  max-width: 640px;
}

/* CLOSING */
.closing { padding: 96px 64px; }
.closing-inner { max-width: 760px; }
.closing h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 580px;
}

/* FOOTER */
.footer {
  padding: 40px 64px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--fg);
}
.footer-copy { font-size: 0.8rem; color: var(--fg-muted); flex: 1; }
.footer-meta { font-size: 0.72rem; color: var(--fg-muted); }

/* DEMO SECTION */
.demo {
  padding: 96px 64px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
}
.demo-inner { max-width: 760px; }
.demo-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 20px;
}
.demo-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.demo-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 48px;
  max-width: 560px;
}
.demo-form-wrap { margin-bottom: 32px; }
.demo-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.demo-field { display: flex; flex-direction: column; gap: 6px; }
.demo-field--wide { grid-column: 1 / -1; }
.demo-field label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}
.demo-required { color: var(--accent); }
.demo-optional { font-weight: 400; opacity: 0.7; }
.demo-field input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.9rem;
  color: var(--fg);
  font-family: var(--font-sans);
  transition: border-color 0.15s;
  outline: none;
}
.demo-field input::placeholder { color: var(--fg-muted); opacity: 0.6; }
.demo-field input:focus { border-color: var(--accent); }
.demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #0f0f17;
  border: none;
  border-radius: 8px;
  padding: 13px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: opacity 0.15s;
}
.demo-btn:hover { opacity: 0.88; }
.demo-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.demo-btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(15,15,23,0.3);
  border-top-color: #0f0f17;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.demo-btn--loading .demo-btn-spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

.demo-result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 0;
}
.demo-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.demo-result-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 7px;
}
.demo-result-label::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}
.demo-copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.demo-copy-btn:hover { border-color: var(--accent); color: var(--fg); }
.demo-email-body {
  padding: 20px 22px;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
}
.demo-caption {
  font-size: 0.75rem;
  color: var(--fg-muted);
  padding: 0 22px 8px;
  font-style: italic;
}
.demo-waitlist-link {
  display: block;
  padding: 14px 22px;
  font-size: 0.85rem;
  color: var(--accent);
  border-top: 1px solid var(--border);
  text-decoration: none;
  transition: opacity 0.15s;
}
.demo-waitlist-link:hover { opacity: 0.8; }
.demo-error {
  margin-top: 16px;
  background: rgba(220, 60, 60, 0.12);
  border: 1px solid rgba(220, 60, 60, 0.3);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: #ff7070;
  line-height: 1.5;
}

/* TWO-PANEL RESULT */
.demo-research-email {
  margin-bottom: 0;
}
.demo-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 0;
}
.demo-panel {
  display: flex;
  flex-direction: column;
}
.demo-panel--research {
  background: var(--surface);
  border-right: 1px solid var(--border);
}
.demo-panel--email {
  background: var(--surface-2);
}
.demo-panel-header {
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.demo-panel-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
}

/* Research items */
.demo-research-items {
  padding: 0;
  flex: 1;
}
.research-item {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.research-item:last-child { border-bottom: none; }
.research-item-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 5px;
}
.research-item-text {
  font-size: 0.82rem;
  color: var(--fg);
  line-height: 1.6;
}
.research-item--highlight {
  background: rgba(245, 166, 35, 0.05);
}
.research-item--highlight .research-item-text {
  color: #f5d9a8;
}

/* Email body inside right panel */
.demo-panel--email .demo-email-body {
  padding: 18px 20px;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--fg);
  white-space: pre-wrap;
  word-break: break-word;
  flex: 1;
}
.demo-panel--email .demo-caption {
  font-size: 0.75rem;
  color: var(--fg-muted);
  padding: 0 20px 12px;
  font-style: italic;
}
.demo-panel--email .demo-copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  font-size: 0.78rem;
  color: var(--fg-muted);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.demo-panel--email .demo-copy-btn:hover { border-color: var(--accent); color: var(--fg); }

/* WAITLIST SECTION */
.waitlist {
  padding: 96px 64px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
.waitlist-inner { max-width: 680px; }
.waitlist-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 20px;
}
.waitlist-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.waitlist-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 520px;
}
.waitlist-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.waitlist-field { display: flex; flex-direction: column; gap: 6px; }
.waitlist-field--wide { grid-column: 1 / -1; }
.waitlist-field label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}
.waitlist-required { color: var(--accent); }
.waitlist-field input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.9rem;
  color: var(--fg);
  font-family: var(--font-sans);
  transition: border-color 0.15s;
  outline: none;
}
.waitlist-field input::placeholder { color: var(--fg-muted); opacity: 0.6; }
.waitlist-field input:focus { border-color: var(--accent); }
.waitlist-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #0f0f17;
  border: none;
  border-radius: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: opacity 0.15s;
}
.waitlist-btn:hover { opacity: 0.88; }
.waitlist-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.waitlist-btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(15,15,23,0.3);
  border-top-color: #0f0f17;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.waitlist-btn--loading .waitlist-btn-spinner { display: block; }
.waitlist-error {
  margin-top: 14px;
  background: rgba(220,60,60,0.12);
  border: 1px solid rgba(220,60,60,0.3);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: #ff7070;
  line-height: 1.5;
}
.waitlist-success { padding: 32px 0 0; }
.waitlist-success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(245,166,35,0.15);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.waitlist-success-msg {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.waitlist-success-sub {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 460px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; gap: 48px; padding: 64px 40px 56px; }
  .hero-visual { display: none; }
  .proof-steps { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .proof-step { border-right: none; padding: 0; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav { padding: 20px 24px; }
  .hero { padding: 48px 24px 40px; }
  .proof, .features, .manifesto, .closing, .demo, .waitlist { padding: 56px 24px; }
  .proof-steps, .features-grid { grid-template-columns: 1fr; }
  .footer { flex-wrap: wrap; gap: 12px; padding: 32px 24px; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 16px; }
  .stat { padding: 0; }
  .stat-sep { display: none; }
  .demo-fields, .waitlist-fields { grid-template-columns: 1fr; }
}