/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #090909;
  --surface: #141414;
  --surface2: #1e1e1e;
  --lime: #AAFF00;
  --lime-dim: rgba(170,255,0,0.15);
  --text: #F4F4F0;
  --muted: #888888;
  --border: #2a2a2a;
  --font-head: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

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

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

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9,9,9,0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nav-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ===== SECTION VARIABLES ===== */
section { padding: 5rem 2rem; }
.section-inner, .hero-inner, .how-inner, .features-inner, .pricing-inner, .closing-inner, .problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(170,255,0,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-headline .lime { color: var(--lime); }

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 480px;
}

/* ===== INVOICE CARD ===== */
.invoice-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(170,255,0,0.08);
}

.invoice-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--lime);
  border-radius: 16px 16px 0 0;
}

.invoice-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
  padding-top: 0.5rem;
}

.invoice-from {
  font-weight: 700;
  color: var(--text);
  font-size: 0.875rem;
}

.invoice-est-badge {
  background: var(--lime-dim);
  color: var(--lime);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-weight: 500;
}

.invoice-to { margin-bottom: 1.5rem; }
.invoice-label { color: var(--muted); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.2rem; }
.invoice-value { color: var(--text); font-size: 0.875rem; }

.invoice-items { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 1rem 0; margin-bottom: 1rem; }
.invoice-row { display: flex; justify-content: space-between; align-items: center; padding: 0.45rem 0; }
.item-name { color: var(--text); }
.item-price { color: var(--text); font-weight: 500; }

.invoice-divider { height: 1px; background: var(--border); margin-bottom: 1rem; }

.invoice-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text);
  margin-bottom: 1.75rem;
}

.total-amount { font-size: 1.75rem; font-weight: 700; }

.invoice-actions { display: flex; gap: 0.75rem; }

.action-btn-primary {
  background: var(--lime);
  color: #090909;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  text-align: center;
  cursor: default;
  width: 100%;
}

/* ===== PROBLEM ===== */
.problem { background: var(--surface); }
.problem-label, .how-label, .features-label, .pricing-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.problem-headline {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  max-width: 600px;
  line-height: 1.15;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.problem-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.problem-icon {
  font-size: 1.25rem;
  color: #FF5555;
  margin-bottom: 1rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.problem-card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ===== HOW ===== */
.how-headline {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  max-width: 600px;
  line-height: 1.15;
}

.steps {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.step { flex: 1; }
.step-arrow {
  font-size: 1.5rem;
  color: var(--lime);
  flex-shrink: 0;
  font-family: var(--font-mono);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--lime);
  margin-bottom: 0.75rem;
}

.step h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.step p { color: var(--muted); font-size: 0.95rem; line-height: 1.65; }

/* ===== FEATURES ===== */
.features { background: var(--surface); }
.features-headline {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  max-width: 560px;
  line-height: 1.15;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.feature {
  background: var(--surface2);
  padding: 2rem 2rem;
}

.feature-icon {
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--lime-dim);
  border-radius: 8px;
}

.feature h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature p { color: var(--muted); font-size: 0.875rem; line-height: 1.65; }

/* ===== PRICING ===== */
.pricing-headline {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
  max-width: 560px;
  line-height: 1.15;
}

.pricing-tier {
  background: var(--surface);
  border: 1px solid var(--lime);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 420px;
  position: relative;
}

.pricing-tier::before {
  content: 'Popular';
  position: absolute;
  top: -1px;
  right: 2rem;
  background: var(--lime);
  color: #090909;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.75rem;
  border-radius: 0 0 6px 6px;
  text-transform: uppercase;
}

.tier-name {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.tier-price { margin-bottom: 1.5rem; }
.price-amount {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}
.price-period { font-size: 1.1rem; color: var(--muted); font-family: var(--font-mono); }

.tier-features { list-style: none; margin-bottom: 1.5rem; }
.tier-features li {
  font-size: 0.9rem;
  color: var(--text);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.tier-features li::before {
  content: '✓';
  color: var(--lime);
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.tier-note {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ===== CLOSING ===== */
.closing { text-align: center; background: var(--surface); }
.closing-text {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.closing-sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer { padding: 2rem; border-top: 1px solid var(--border); }
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-logo { font-weight: 800; font-size: 1rem; letter-spacing: -0.02em; }
.footer-copy { font-size: 0.8rem; color: var(--muted); font-family: var(--font-mono); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  section { padding: 3.5rem 1.25rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-right { order: -1; }
  .problem-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .step-arrow { transform: rotate(90deg); }
  .features-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .invoice-card { padding: 1.25rem; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2rem; }
  .price-amount { font-size: 2.8rem; }
  .tier-price { margin-bottom: 1rem; }
}