/* Budgeture marketing site — main.css
   Plain CSS. System fonts only. No external assets.
   Palette anchored on the Budgeture app icon: deep navy + white serif. */

:root {
  --bg: #f3f1ec;
  --bg-2: #e6e3da;
  --surface: rgba(255, 254, 251, 0.62);
  --surface-strong: rgba(255, 254, 251, 0.88);
  --border: rgba(20, 28, 50, 0.10);
  --ink: #14213f;
  --ink-2: #2f3a58;
  --ink-3: #6a7388;
  --accent: #1e2a4a;
  --accent-ink: #ffffff;
  --accent-soft: rgba(30, 42, 74, 0.10);

  --radius: 18px;
  --radius-lg: 28px;
  --shadow-sm: 0 1px 2px rgba(14, 26, 54, 0.05), 0 4px 14px rgba(14, 26, 54, 0.07);
  --shadow-lg: 0 8px 24px rgba(14, 26, 54, 0.10), 0 24px 60px rgba(14, 26, 54, 0.14);

  --font-serif: ui-serif, "New York", "Charter", "Georgia", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
  --font-rounded: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  --max: 1080px;
  --gutter: clamp(20px, 5vw, 56px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1a36;
    --bg-2: #162244;
    --surface: rgba(28, 40, 70, 0.55);
    --surface-strong: rgba(28, 40, 70, 0.80);
    --border: rgba(220, 230, 250, 0.10);
    --ink: #ecf1fb;
    --ink-2: #c7d0e4;
    --ink-3: #8893ad;
    --accent: #9bb4dd;
    --accent-ink: #0e1a36;
    --accent-soft: rgba(155, 180, 221, 0.14);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Soft ambient backdrop — evokes the app's AmbientBackground */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 40% at 15% 10%, rgba(30, 42, 74, 0.10), transparent 70%),
    radial-gradient(50% 40% at 85% 0%, rgba(120, 145, 195, 0.10), transparent 70%),
    radial-gradient(70% 50% at 50% 100%, rgba(30, 42, 74, 0.06), transparent 70%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}

@media (prefers-color-scheme: dark) {
  .ambient {
    background:
      radial-gradient(60% 40% at 15% 10%, rgba(155, 180, 221, 0.10), transparent 70%),
      radial-gradient(50% 40% at 85% 0%, rgba(80, 110, 170, 0.14), transparent 70%),
      radial-gradient(70% 50% at 50% 100%, rgba(155, 180, 221, 0.06), transparent 70%),
      linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  }
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 0.4em;
}

h1 {
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  line-height: 1.1;
}

h3 {
  font-size: 1.18rem;
  font-family: var(--font-rounded);
  font-weight: 600;
  letter-spacing: -0.005em;
}

p { margin: 0 0 1em; }

.eyebrow {
  font-family: var(--font-rounded);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.8em;
}

.lede, .section-lede {
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--ink-2);
  max-width: 60ch;
}

.microcopy {
  font-size: 0.86rem;
  color: var(--ink-3);
}

.microcopy code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 6px;
}

.link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.link:hover { opacity: 0.8; }

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}

.wordmark {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.94rem;
  font-family: var(--font-rounded);
}

.site-nav a:hover { color: var(--ink); background: var(--surface); }

.nav-cta {
  background: var(--ink);
  color: var(--bg);
}
.nav-cta:hover { background: var(--ink); color: var(--bg); opacity: 0.9; }

@media (max-width: 640px) {
  .site-nav a:not(.nav-cta) { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--font-rounded);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.08s ease, opacity 0.15s ease;
  border: 1px solid transparent;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { opacity: 0.92; }

.btn-ghost {
  color: var(--ink);
  border-color: var(--border);
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}
.btn-ghost:hover { background: var(--surface-strong); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
}
.cta-row-center { justify-content: center; }

/* Sections */
main > section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(64px, 10vw, 120px) var(--gutter);
}

.section-head { margin-bottom: 36px; max-width: 60ch; }

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  padding-top: clamp(32px, 6vw, 64px) !important;
}

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
}

.hero-copy .lede { margin-bottom: 32px; }

/* Hero device mockup */
.hero-art {
  display: flex;
  justify-content: center;
}

.device-mock {
  width: min(360px, 100%);
  aspect-ratio: 9 / 17;
  border-radius: 44px;
  background: var(--surface);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  display: flex;
  align-items: stretch;
}

.device-screen {
  flex: 1;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255,254,251,0.6), rgba(255,254,251,0.3));
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .device-screen {
    background: linear-gradient(180deg, rgba(28,40,70,0.6), rgba(28,40,70,0.3));
  }
}

.mock-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.95rem;
  color: var(--ink-2);
}

.mock-header {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--ink);
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 4px;
}

.mock-title { font-weight: 600; }

.mock-amount {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  color: var(--ink);
  font-weight: 500;
}

.mock-bar {
  height: 8px;
  background: var(--accent-soft);
  border-radius: 999px;
  margin-top: auto;
  overflow: hidden;
}
.mock-bar span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
}

.mock-foot {
  font-size: 0.8rem;
  color: var(--ink-3);
  margin: 0;
  font-family: var(--font-rounded);
}

/* Features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card h3 { margin-bottom: 6px; }
.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.96rem;
  line-height: 1.5;
}

/* Palettes */
.palette-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.swatch {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, var(--b) 0%, var(--b) 55%, var(--a) 55%, var(--a) 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.swatch::after {
  content: "";
  position: absolute;
  right: 14px; top: 14px;
  width: 22px; height: 22px;
  border-radius: 999px;
  background: var(--c);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.swatch span {
  position: absolute;
  left: 14px; bottom: 12px;
  font-family: var(--font-rounded);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--b);
  letter-spacing: -0.005em;
}

.palette-note { margin-top: 8px; }

/* Screens */
.screens-row {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr 1.6fr 0.8fr;
  gap: 16px;
  margin-bottom: 14px;
}

@media (max-width: 820px) {
  .screens-row { grid-template-columns: 1fr 1fr; }
}

.screen-frame {
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-3);
  font-family: var(--font-rounded);
  font-size: 0.9rem;
  text-align: center;
  padding: 24px;
}

.screen-iphone { aspect-ratio: 9 / 19; }
.screen-ipad   { aspect-ratio: 4 / 5; }
.screen-mac    { aspect-ratio: 16 / 10; }
.screen-watch  { aspect-ratio: 4 / 5; }

/* Promise band */
.promise {
  position: relative;
}
.promise-inner {
  background: var(--surface-strong);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 5vw, 64px);
  box-shadow: var(--shadow-lg);
}

/* Download + Support */
.download .section-head,
.support .section-head { margin-left: auto; margin-right: auto; text-align: center; }
.download .section-lede,
.support .section-lede { margin-left: auto; margin-right: auto; }
.download, .support { text-align: center; }
.download .section-head, .support .section-head { max-width: 60ch; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  background: transparent;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 36px var(--gutter) 56px;
  display: grid;
  gap: 16px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
  color: var(--ink);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.site-footer nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-family: var(--font-rounded);
  font-size: 0.94rem;
}
.site-footer nav a:hover { color: var(--ink); }

.footer-meta {
  margin: 0;
  color: var(--ink-3);
  font-size: 0.84rem;
}

/* Long-form doc page (privacy, etc.) */
.doc {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(48px, 8vw, 96px) var(--gutter);
}

.doc-head { margin-bottom: 32px; }
.doc-head h1 { font-size: clamp(2rem, 4vw, 3rem); }
.doc-meta {
  margin: 0;
  color: var(--ink-3);
  font-family: var(--font-rounded);
  font-size: 0.92rem;
}

.doc h2 {
  font-size: 1.4rem;
  margin-top: 2em;
  margin-bottom: 0.5em;
}

.doc p, .doc li {
  color: var(--ink-2);
  line-height: 1.6;
}

.doc ul {
  padding-left: 1.2em;
  margin: 0 0 1em;
}
.doc li { margin-bottom: 0.4em; }

.doc strong { color: var(--ink); font-weight: 600; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}