/* =========================================================================
   Balant: shared styles for every page.
   Order: tokens, base, layout, header, buttons, type, surfaces, forms,
   footer, motion. Home-page sections live in landing.css.
   Palette: cool off-white, slate ink, navy actions, indigo accents, and a
   twilight painting behind the hero panel and the closing panel.
   ========================================================================= */

/* Tokens ---------------------------------------------------------------- */

/* Light surfaces. Cards re-declare them so they keep dark ink if they
   ever sit inside a dark band. */
:root,
.card {
  --bg: #f5f6f9;
  --bg-alt: #eceff5;
  --surface: #ffffff;
  --surface-2: #f8f9fc;
  --tile: #e7eaf1;
  --ink: #121726;
  --ink-2: #474f63;
  --ink-3: #5f687c;
  --line: #e2e6ee;
  --line-strong: #cbd2de;
  --link: #3450c8;
  --focus: #3450c8;
  --check: #3450c8;
  --btn-bg: #1f2d5c;
  --btn-ink: #ffffff;
  --btn-bg-hover: #2a3b74;
  --btn-2-bg: #e6e9f2;
  --btn-2-ink: #121726;
  --btn-2-bg-hover: #dadfeb;
}

/* Dark bands: the same names with inverted values, on deep navy. */
.theme-dark {
  --bg: #0f1630;
  --bg-alt: #172042;
  --ink: #f2f4fa;
  --ink-2: rgb(242 244 250 / .74);
  --ink-3: rgb(242 244 250 / .6);
  --line: rgb(242 244 250 / .14);
  --line-strong: rgb(242 244 250 / .28);
  --link: #aab8ff;
  --focus: #aab8ff;
  --check: #a8b6ff;
  --btn-bg: #ffffff;
  --btn-ink: #121726;
  --btn-bg-hover: #e6e9f4;
  --btn-2-bg: rgb(255 255 255 / .12);
  --btn-2-ink: #ffffff;
  --btn-2-bg-hover: rgb(255 255 255 / .2);
  background-color: var(--bg);
  color: var(--ink);
}

:root {
  --accent: #3450c8;
  --accent-ink: #26399e;
  --accent-soft: #e9edfb;
  --amber-ink: #7a4d0b;
  --amber-soft: #f6ead2;
  --danger: #b42318;
  --danger-soft: #fdf0ee;

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --r-xs: 4px;
  --r-sm: 7px;
  --r-md: 10px;
  --r-lg: 14px;

  --shadow-card: 0 1px 2px rgb(18 23 38 / .04), 0 12px 32px -18px rgb(18 23 38 / .22);
  --shadow-lift: 0 2px 6px rgb(18 23 38 / .06), 0 26px 50px -24px rgb(18 23 38 / .38);
  --shadow-panel: 0 2px 8px rgb(8 12 28 / .2), 0 44px 90px -34px rgb(8 12 28 / .62);

  --wrap: 1200px;
  --gutter: 40px;
  --nav-h: 64px;
  --band-pad: clamp(72px, 9vw, 120px);

  /* The painted backdrop. painting.jpg is rendered from painting.svg. */
  --painting: url("img/painting.1b9ead6cea15.jpg");
  --grain: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 .22 0'/></filter><rect width='180' height='180' filter='url(%23g)'/></svg>");
  --icon-check: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M3.5 8.4l2.9 2.9 6.1-6.6' fill='none' stroke='black' stroke-width='1.9' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  --icon-check-white: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M3.5 8.4l2.9 2.9 6.1-6.6' fill='none' stroke='white' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/></svg>");
}

@media (max-width: 720px) {
  :root { --gutter: 20px; --nav-h: 58px; }
}

/* Base ------------------------------------------------------------------ */

*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
main { display: block; flex: 1 0 auto; }
main:focus { outline: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.1; letter-spacing: -0.022em; text-wrap: balance; }
p, li, dd { text-wrap: pretty; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
::selection { background: #dfe4fb; color: #121726; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  top: -60px; left: 12px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  background: var(--btn-bg);
  color: var(--btn-ink);
  text-decoration: none;
}
.skip-link:focus { top: 12px; }
.nw { white-space: nowrap; }

/* Layout ---------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.page { padding-block: clamp(40px, 6vw, 72px) clamp(72px, 9vw, 112px); }
.band { padding-block: var(--band-pad); }
.band-alt { background-color: var(--bg-alt); }

/* Header ---------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(245 246 249 / .86);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid rgb(18 23 38 / .07);
}
.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.03em;
  text-decoration: none;
}
/* The logo mark: white B on a blue tile. Same drawing as icon.svg, inline so
   it never shows a stale cached image. */
.brand-mark {
  display: block;
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 22%;
  background: linear-gradient(135deg, #4f71f6, #26399e);
}
.brand-mark svg { display: block; width: 100%; height: 100%; }
.nav-right { display: flex; align-items: center; gap: 36px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link {
  color: var(--ink-2);
  font-size: 15px;
  text-decoration: none;
  transition: color .15s ease;
}
.nav-link:hover { color: var(--ink); }
@media (max-width: 960px) {
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .site-header .btn .arrow { display: none; }
}
@media (max-width: 380px) {
  .site-header .btn { padding: 0 12px; font-size: 13.5px; }
}

/* Buttons --------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 17px;
  border: 0;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, box-shadow .15s ease;
}
.btn .arrow { display: inline-block; transition: transform .18s ease; }
.btn:hover .arrow { transform: translateX(2px); }
.btn:hover .arrow.down { transform: translateY(2px); }
.btn-primary { background: var(--btn-bg); color: var(--btn-ink); }
.btn-primary:hover { background: var(--btn-bg-hover); }
.btn-secondary { background: var(--btn-2-bg); color: var(--btn-2-ink); }
.btn-secondary:hover { background: var(--btn-2-bg-hover); }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 14px; }
.btn-lg { min-height: 46px; padding: 0 20px; }
.btn-block { width: 100%; }
.btn:disabled,
.btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.btn-primary:disabled:hover { background: var(--btn-bg); }
.btn:disabled:hover .arrow { transform: none; }

/* Type ------------------------------------------------------------------ */

.eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.lede { font-size: 17px; line-height: 1.6; color: var(--ink-2); }
.small { font-size: 13px; color: var(--ink-3); }

/* Surfaces -------------------------------------------------------------- */

.card {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
}

/* The painted backdrop: painting + film grain, darkened inside dark bands.
   Set --painting-pos on a section to choose the crop. */
.painted {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: #2b2f52;
}
.painted::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    var(--grain) 0 0 / 180px 180px repeat,
    var(--painting) var(--painting-pos, 50% 50%) / cover no-repeat;
}
.theme-dark.painted::before {
  background:
    var(--grain) 0 0 / 180px 180px repeat,
    linear-gradient(rgb(10 14 30 / .7), rgb(10 14 30 / .8)),
    var(--painting) var(--painting-pos, 50% 50%) / cover no-repeat;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--btn-2-bg);
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0;
  white-space: nowrap;
}
.pill-accent { background: var(--accent-soft); color: var(--accent-ink); }
.pill-amber { background: var(--amber-soft); color: var(--amber-ink); }

/* Marks content that must be replaced before launch. */
.placeholder-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border: 1px dashed #c2862f;
  border-radius: 999px;
  background: #fff5e2;
  color: #8a5300;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.2;
  text-transform: uppercase;
  vertical-align: middle;
  white-space: nowrap;
}

.tick {
  position: relative;
  display: inline-block;
  flex: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
}
.tick::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #fff;
  -webkit-mask: var(--icon-check) 50% 50% / 11px 11px no-repeat;
  mask: var(--icon-check) 50% 50% / 11px 11px no-repeat;
}

.checklist { list-style: none; padding: 0; display: grid; gap: 10px; }
.checklist > li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.5;
}
.checklist > li::before {
  content: "";
  position: absolute;
  top: .1em;
  left: 0;
  width: 18px;
  height: 18px;
  background: var(--check);
  -webkit-mask: var(--icon-check) 50% 50% / 16px 16px no-repeat;
  mask: var(--icon-check) 50% 50% / 16px 16px no-repeat;
}

/* Forms ----------------------------------------------------------------- */

.label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
}
.label .small { font-weight: 400; }
.input {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: var(--surface);
  color: var(--ink);
  font-size: 15px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.input::placeholder { color: #9aa1af; }
.input:hover { border-color: #b3bccb; }
.input:focus { outline: none; border-color: var(--btn-bg); box-shadow: 0 0 0 3px rgb(52 80 200 / .14); }

/* Footer ---------------------------------------------------------------- */

.site-footer {
  padding-block: 44px 28px;
  border-top: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-3);
  font-size: 14px;
}
.foot-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px 64px;
}
.foot-tag { margin-top: 12px; max-width: 34ch; }
.foot-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
}
.foot-links a { color: var(--ink-2); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }
.foot-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.foot-tm { max-width: 62ch; }

/* Motion ---------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(12px);
  animation: rise .7s cubic-bezier(.2, .7, .2, 1) forwards;
}
.reveal.d1 { animation-delay: .04s; }
.reveal.d2 { animation-delay: .14s; }
.reveal.d3 { animation-delay: .26s; }
.reveal.d4 { animation-delay: .4s; }
.reveal.d5 { animation-delay: .52s; }
.reveal.d6 { animation-delay: .64s; }
@keyframes rise { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; animation: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}