/* Art direction: personal finance launch page → calm, trustworthy, precise
   Palette: warm neutral surfaces with restrained teal accent
   Typography: Zodiak + General Sans for editorial clarity with product readability
   Density: balanced */

:root, [data-theme="light"] {
  --font-display: 'Zodiak', Georgia, serif;
  --font-body: 'General Sans', 'Inter', sans-serif;
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --color-bg: #f7f6f2;
  --color-surface: #f9f8f5;
  --color-surface-2: #fbfbf9;
  --color-surface-offset: #f3f0ec;
  --color-divider: #dcd9d5;
  --color-border: #d4d1ca;
  --color-text: #28251d;
  --color-text-muted: #66645f;
  --color-text-faint: #9a9892;
  --color-text-inverse: #f9f8f4;
  --color-primary: #5a33a2;
  --color-primary-hover: #472784;
  --color-primary-highlight: #e2d8f4;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --content-default: 1120px;
  --content-narrow: 780px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-bg: #171614;
  --color-surface: #1c1b19;
  --color-surface-2: #201f1d;
  --color-surface-offset: #22211f;
  --color-divider: #262523;
  --color-border: #393836;
  --color-text: #e2e0db;
  --color-text-muted: #b2afaa;
  --color-text-faint: #7d7a74;
  --color-text-inverse: #2b2a28;
  --color-primary: #8f74c7;
  --color-primary-hover: #a58bd8;
  --color-primary-highlight: #312a42;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #171614;
    --color-surface: #1c1b19;
    --color-surface-2: #201f1d;
    --color-surface-offset: #22211f;
    --color-divider: #262523;
    --color-border: #393836;
    --color-text: #e2e0db;
    --color-text-muted: #b2afaa;
    --color-text-faint: #7d7a74;
    --color-text-inverse: #2b2a28;
    --color-primary: #8f74c7;
    --color-primary-hover: #a58bd8;
    --color-primary-highlight: #312a42;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  z-index: 100;
}
.skip-link:focus { top: var(--space-4); }
.container {
  width: min(calc(100% - 2rem), var(--content-default));
  margin-inline: auto;
}
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
}
.nav-wrap {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
}
.brand-image {
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
  object-fit: cover;
}

.hero-logo {
  width: 7rem;
  height: 7rem;
  border-radius: 1.35rem;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-5);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.site-nav a,
.theme-toggle {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
}
.theme-toggle {
  width: 44px;
  border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
  border-radius: var(--radius-full);
  background: var(--color-surface);
}
.hero-grid,
.callout-grid,
.footer-grid {
  display: grid;
  gap: var(--space-8);
}
.hero-grid {
  align-items: center;
}
.eyebrow,
.mini-label,
.meta {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--space-4);
}
h1, h2 {
  font-family: var(--font-display);
  line-height: 1.05;
}
h1 {
  font-size: var(--text-2xl);
  max-width: 13ch;
  margin-bottom: var(--space-4);
}
h2 {
  font-size: var(--text-xl);
  max-width: 18ch;
}
h3 {
  font-size: var(--text-lg);
  line-height: 1.2;
  margin-bottom: var(--space-3);
}
.hero-text,
.feature p,
.callout-card p,
.status-card p,
.footer-copy {
  color: var(--color-text-muted);
  max-width: 62ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-6) var(--space-4);
}
.button {
  min-height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  font-size: var(--text-sm);
  font-weight: 600;
}
.button-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.button-primary:hover { background: var(--color-primary-hover); }
.button-secondary {
  background: var(--color-surface);
  border-color: color-mix(in oklab, var(--color-text) 12%, transparent);
}
.device-card,
.feature,
.callout-card,
.status-card {
  background: var(--color-surface);
  border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.device-card {
  padding: var(--space-5);
}
.phone-frame {
  max-width: 21rem;
  margin-inline: auto;
  border-radius: 2rem;
  background: var(--color-text);
  padding: 0.75rem;
}
.phone-screen {
  min-height: 34rem;
  background: var(--color-surface-2);
  border-radius: 1.45rem;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}
.screen-top,
.screen-card,
.row-item {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
}
.screen-top strong,
.row-item strong,
.row-item b,
.screen-card strong {
  display: block;
}
.screen-top strong { font-size: 1.9rem; }
.accent-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-primary-highlight);
}
.pill {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: var(--text-xs);
  font-weight: 700;
}
.screen-list {
  display: grid;
  gap: var(--space-3);
}
.row-item {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
}
.row-item span,
.muted,
.meta { color: var(--color-text-muted); }
.positive { color: var(--color-primary); }
.section-heading {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.feature-layout,
.status-grid {
  display: grid;
  gap: var(--space-4);
}
.feature,
.status-card,
.callout-card {
  padding: var(--space-6);
}
.feature-large {
  background: var(--color-surface-offset);
}
.callout-section {
  background: color-mix(in oklab, var(--color-primary) 5%, var(--color-bg));
}
.narrow-stack {
  max-width: var(--content-narrow);
}
.site-footer {
  border-top: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
}
.footer-grid {
  align-items: start;
}
.footer-brand { margin-bottom: var(--space-4); }
.footer-links {
  display: grid;
  gap: var(--space-2);
}
.site-nav a:hover,
.footer-links a:hover {
  color: var(--color-primary);
}

@media (min-width: 800px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
  .feature-layout {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
  .callout-grid,
  .footer-grid,
  .status-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 0.8fr;
  }
}

@media (max-width: 720px) {
  .nav-wrap {
    padding-block: var(--space-3);
    align-items: flex-start;
    flex-direction: column;
  }
  .site-nav {
    width: 100%;
    justify-content: space-between;
  }
  .phone-screen {
    min-height: auto;
  }
}