/* === Base === */
:root {
  --bg: #FAF8F5;
  --bg-alt: #F0EDE8;
  --fg: #1B1B1A;
  --fg-muted: #6A6862;
  --green: #1B4332;
  --green-mid: #2D6A4F;
  --green-light: #D8F3DC;
  --amber: #C8843A;
  --amber-light: #FDF3E3;
  --white: #FFFFFF;
  --border: #E0DCD5;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 6rem;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
}

/* === Hero === */
.hero {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.hero-left {
  border-right: 1px solid var(--border);
  padding-right: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.stat-block {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 600;
  color: var(--green);
  line-height: 0.9;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin-top: 0.4rem;
  font-weight: 300;
  max-width: 280px;
}

.stat-block.secondary .stat-number { font-size: 3.5rem; }
.stat-block.tertiary .stat-number { font-size: 2.5rem; color: var(--green-mid); }
.stat-block.tertiary .stat-label { color: var(--green); font-weight: 500; }

.hero-right {
  padding-top: 0.5rem;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-md);
}

.headline {
  font-family: var(--font-display);
  font-size: 3.8rem;
  font-weight: 400;
  line-height: 1.05;
  color: var(--fg);
  margin-bottom: var(--space-lg);
}

.headline em {
  font-style: italic;
  color: var(--green);
}

.sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 460px;
}

.sub.secondary {
  font-size: 0.9rem;
  color: var(--green);
  font-weight: 500;
}

/* === Proof === */
.proof {
  padding: var(--space-lg) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.proof-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: var(--space-md);
}

.proof-stats {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.proof-stat {
  display: flex;
  flex-direction: column;
}

.proof-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--green);
}

.proof-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

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

/* === Features === */
.features {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: var(--space-xl);
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--fg);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-2xl);
}

.feature-row.bottom {
  direction: rtl;
}

.feature-row.bottom > * {
  direction: ltr;
}

.feature-text h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--fg);
  margin-bottom: var(--space-md);
}

.feature-text p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
  max-width: 380px;
}

/* === Email Stack Visual === */
.email-stack {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.email-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.email-from {
  font-weight: 500;
  color: var(--fg);
  min-width: 120px;
}

.email-sub {
  color: var(--fg-muted);
  flex: 1;
}

.email-action {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}

.email-card.promo .email-action {
  background: var(--bg-alt);
  color: var(--fg-muted);
}

.email-card.cold .email-action {
  background: var(--green-light);
  color: var(--green);
}

.email-card.urgent .email-action {
  background: var(--amber-light);
  color: var(--amber);
}

/* === Brief Card Visual === */
.brief-card {
  background: var(--green);
  color: var(--white);
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: 0 8px 32px rgba(27, 67, 50, 0.25);
}

.brief-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.brief-icon {
  font-size: 1.2rem;
}

.brief-title {
  font-weight: 500;
  flex: 1;
}

.brief-time {
  font-size: 0.75rem;
  opacity: 0.6;
}

.brief-items {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.brief-item {
  font-size: 0.82rem;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.item-badge {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 12px;
  display: inline-block;
  width: fit-content;
}

.brief-item.urgent .item-badge {
  background: var(--amber);
  color: var(--white);
}

.brief-item .item-badge.replied {
  background: var(--green-light);
  color: var(--green);
}

.brief-item .item-badge.unsubscribed {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.8);
}

/* === How === */
.how {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

.how h2 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--fg);
  margin-bottom: var(--space-xl);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.step {
  display: flex;
  flex-direction: column;
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
  color: var(--green-light);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--fg);
  margin-bottom: var(--space-sm);
}

.step p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === Closing === */
.closing {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

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

.closing-quote {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-style: italic;
  color: var(--fg);
  line-height: 1.4;
  margin-bottom: var(--space-lg);
}

.closing-cta {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--green);
  margin-bottom: var(--space-md);
}

.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === Footer === */
footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--border);
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--green);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-top: var(--space-sm);
}

/* === Responsive === */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-left { border-right: none; padding-right: 0; border-bottom: 1px solid var(--border); padding-bottom: var(--space-lg); }
  .stat-number { font-size: 4rem; }
  .headline { font-size: 3rem; }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row.bottom { direction: ltr; }
  .steps { grid-template-columns: 1fr; }
  .proof-stats { flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .hero { padding: var(--space-xl) var(--space-md); }
  .features, .how, .closing { padding: var(--space-xl) var(--space-md); }
  .proof { padding: var(--space-md); }
  .headline { font-size: 2.4rem; }
  .stat-number { font-size: 3rem; }
}