/* ============================================
   EarnStack — Premium Fintech Landing Page
   Instrument Serif + DM Sans
   Deep Navy + Warm Amber Palette
   ============================================ */

:root {
  --bg: #080c14;
  --bg-surface: #0e1520;
  --bg-card: #111827;
  --bg-card-hover: #141e2e;
  --fg: #f0f2f5;
  --fg-muted: #8b9ab5;
  --fg-subtle: #4a5568;
  --accent: #f0b429;
  --accent-dim: rgba(240, 180, 41, 0.12);
  --accent-border: rgba(240, 180, 41, 0.2);
  --border: rgba(255,255,255,0.07);
  --border-accent: rgba(240, 180, 41, 0.3);
  --positive: #34d399;
  --positive-dim: rgba(52, 211, 153, 0.12);
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- Custom scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

em { font-style: italic; color: var(--accent); }

/* ---- NAVBAR ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  display: flex;
  align-items: center;
}

.brand-name {
  font-family: 'Instrument Serif', serif;
  font-size: 1.2rem;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.nav-tagline {
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 48px 80px;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(240,180,41,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(240,180,41,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(240,180,41,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 1200px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  width: fit-content;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-headline {
  font-size: clamp(2.8rem, 4.5vw, 4rem);
  color: var(--fg);
  margin-bottom: 24px;
  line-height: 1.08;
}

.hero-subhead {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 480px;
}

/* ---- DASHBOARD MOCKUP ---- */
.hero-visual {
  display: flex;
  justify-content: flex-end;
}

.dashboard-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(240,180,41,0.08);
  overflow: hidden;
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.mockup-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }

.mockup-title {
  font-size: 0.72rem;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
  flex: 1;
  text-align: center;
}

.mockup-live {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.68rem;
  color: var(--positive);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.live-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--positive);
  animation: pulse 1.5s infinite;
}

.mockup-body { padding: 20px; }

.mockup-kpis {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}

.kpi-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

.kpi-main {
  background: rgba(240,180,41,0.07);
  border-color: var(--accent-border);
}

.kpi-label {
  font-size: 0.65rem;
  color: var(--fg-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.kpi-value {
  font-family: 'Instrument Serif', serif;
  font-size: 1.5rem;
  color: var(--fg);
  line-height: 1;
}

.kpi-sm { font-size: 1.15rem; }

.kpi-change {
  font-size: 0.62rem;
  margin-top: 4px;
  font-weight: 500;
}

.kpi-change.up { color: var(--positive); }
.kpi-change.neutral { color: var(--fg-muted); }

.mockup-chart {}

.chart-label {
  font-size: 0.65rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 70px;
}

.bar {
  flex: 1;
  height: var(--h);
  background: var(--color, rgba(240,180,41,0.5));
  border-radius: 4px 4px 0 0;
  transition: all 0.3s ease;
}

/* ---- STATS BAR ---- */
.stats-bar {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 48px;
}

.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.stat-number {
  font-family: 'Instrument Serif', serif;
  font-size: 1.8rem;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin: 0 32px;
  flex-shrink: 0;
}

/* ---- SECTIONS SHARED ---- */
.section-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  color: var(--fg);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 560px;
}

/* ---- FEATURES ---- */
.features {
  padding: 120px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.features .section-header {
  text-align: center;
  margin-bottom: 72px;
}

.features .section-subtitle { margin: 0 auto; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent-border);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.feature-card-lg {
  grid-column: span 2;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto auto;
  gap: 0 24px;
}

.feature-card-wide {
  grid-column: 1 / -1;
}

.feature-icon {
  color: var(--accent);
  margin-bottom: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 10px;
  flex-shrink: 0;
}

.feature-number {
  font-family: 'Instrument Serif', serif;
  font-size: 3.5rem;
  color: var(--accent);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 12px;
  grid-column: 1 / -1;
}

.feature-card-lg .feature-number {
  grid-column: 1;
  grid-row: 1;
  font-size: 2.5rem;
  margin-bottom: 0;
  margin-right: 0;
}

.feature-card-lg .feature-icon {
  grid-row: 1;
  grid-column: 2;
  align-self: start;
  margin-bottom: 16px;
}

.feature-card-lg h3 { grid-column: 2; }
.feature-card-lg p { grid-column: 2; }
.feature-card-lg .feature-tags { grid-column: 2; }

.feature-card-wide .feature-icon,
.feature-card-wide .feature-number { display: inline-block; }

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--fg);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: rgba(240,180,41,0.07);
  border: 1px solid rgba(240,180,41,0.15);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  letter-spacing: 0.03em;
}

/* ---- HOW IT WORKS ---- */
.how-it-works {
  padding: 100px 48px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how-it-works .section-header {
  text-align: center;
  margin-bottom: 72px;
}

.steps-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 60px 1fr 60px 1fr;
  align-items: start;
  gap: 0;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.3s ease;
}

.step-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
}

.step-num {
  font-family: 'Instrument Serif', serif;
  font-size: 3rem;
  color: var(--accent);
  opacity: 0.18;
  line-height: 1;
  margin-bottom: 16px;
}

.step-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.step-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 14px;
  color: var(--accent);
}

.step-card h3 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.3rem;
  color: var(--fg);
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

.step-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
}

.connector-line {
  width: 1px;
  flex: 1;
  background: linear-gradient(to bottom, var(--accent-border), transparent);
}

.connector-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240,180,41,0.5);
  margin: 8px 0;
}

/* ---- OUTCOMES ---- */
.outcomes {
  padding: 120px 48px;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.outcomes-copy {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 32px;
}

.outcomes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.outcomes-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--fg);
}

.check-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 50%;
}

.outcomes-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.outcome-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 28px;
  transition: all 0.3s ease;
}

.outcome-card:hover {
  border-color: var(--accent-border);
  transform: translateX(-4px);
}

.outcome-headline {
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin-bottom: 12px;
  font-style: italic;
}

.outcome-stat {}

.outcome-stat-num {
  font-family: 'Instrument Serif', serif;
  font-size: 2.2rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.outcome-stat-label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ---- MANIFESTO ---- */
.manifesto {
  padding: 100px 48px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.manifesto-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.quote-mark {
  font-family: 'Instrument Serif', serif;
  font-size: 8rem;
  color: var(--accent);
  opacity: 0.2;
  line-height: 0.5;
  margin-bottom: 24px;
}

blockquote {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  color: var(--fg);
  line-height: 1.5;
  margin-bottom: 24px;
  font-style: italic;
}

.manifesto-attribution {
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
}

/* ---- CLOSING ---- */
.closing {
  padding: 140px 48px;
  text-align: center;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(240,180,41,0.05) 0%, transparent 70%);
}

.closing-eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.closing-headline {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  color: var(--fg);
  margin-bottom: 20px;
}

.closing-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 540px;
  margin: 0 auto;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}

.footer-brand-name {
  font-family: 'Instrument Serif', serif;
  font-size: 1.1rem;
  color: var(--fg);
}

.footer-tagline {
  font-size: 0.82rem;
  color: var(--fg-muted);
  margin-bottom: 16px;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-subtle);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { justify-content: flex-start; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card-lg { grid-column: span 2; }
  .outcomes { grid-template-columns: 1fr; gap: 48px; }
  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
  .step-connector { display: none; }
  .stats-inner { flex-wrap: wrap; gap: 24px; }
  .stat-divider { display: none; }
}

@media (max-width: 768px) {
  .navbar { padding: 16px 24px; }
  .nav-tagline { display: none; }
  .hero { padding: 100px 24px 60px; }
  .features { padding: 80px 24px; }
  .how-it-works { padding: 80px 24px; }
  .outcomes { padding: 80px 24px; }
  .manifesto { padding: 80px 24px; }
  .closing { padding: 100px 24px; }
  .stats-bar { padding: 24px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card-lg { grid-column: span 1; grid-template-columns: auto 1fr; }
  .mockup-kpis { grid-template-columns: 1fr 1fr; }
  .kpi-card:last-child { display: none; }
  .hero-headline { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  .navbar { padding: 14px 20px; }
  .nav-tagline { display: none; }
  .hero { padding: 90px 20px 50px; }
  .hero-headline { font-size: 1.9rem; }
  .features { padding: 60px 20px; }
  .feature-grid { gap: 12px; }
  .feature-card { padding: 24px 20px; }
  .feature-card-lg { grid-template-columns: 1fr; }
  .feature-card-lg .feature-icon,
  .feature-card-lg .feature-number { grid-column: 1; }
  .how-it-works { padding: 60px 20px; }
  .outcomes { padding: 60px 20px; }
  .stats-bar { padding: 20px; }
  .stat-item { flex: 0 0 calc(50% - 12px); }
  .manifesto { padding: 60px 20px; }
  .closing { padding: 80px 20px; }
  .site-footer { padding: 36px 20px; }
  .feature-card-wide .feature-icon,
  .feature-card-wide .feature-number { display: inline-block; }
}