/* balancebook — shared site styles
   Sourced from index.html (the canonical version we've synced
   support/privacy/terms/about against). Used by all pages. */

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

:root {
  --ink: #0f1720;
  --body: #4d5966;
  --muted: #6d7783;
  --line: rgba(15, 23, 32, 0.1);
  --line-soft: rgba(15, 23, 32, 0.06);
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --bg: #f8f8f5;
  --bg-soft: #f3f4ef;
  --accent: #236846;
  --accent-soft: rgba(35, 104, 70, 0.08);
  --shadow-sm: 0 6px 18px rgba(15, 23, 32, 0.05);
  --shadow-md: 0 18px 44px rgba(15, 23, 32, 0.08);
  --max: 1120px;
  --radius-lg: 18px;
  --radius-xl: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edf2f7;
    --body: #b5c0cb;
    --muted: #8f9baa;
    --line: rgba(255, 255, 255, 0.1);
    --line-soft: rgba(255, 255, 255, 0.06);
    --surface: rgba(17, 24, 31, 0.82);
    --surface-strong: rgba(20, 27, 34, 0.94);
    --bg: #0d1217;
    --bg-soft: #111820;
    --accent: #6abb8e;
    --accent-soft: rgba(106, 187, 142, 0.12);
    --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 20px 52px rgba(0, 0, 0, 0.34);
  }
}

html { scroll-behavior: smooth; color-scheme: light dark; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
  background:
    radial-gradient(circle at 12% 0%, rgba(201, 92, 78, 0.26), transparent 34%),
    radial-gradient(circle at 88% 0%, rgba(41, 113, 77, 0.24), transparent 34%),
    linear-gradient(90deg, rgba(201, 92, 78, 0.09) 0%, rgba(248, 248, 245, 0) 42%, rgba(41, 113, 77, 0.09) 100%),
    linear-gradient(180deg, #f6f4f1 0%, #f8f8f5 24%, #fbfbf9 100%);
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      radial-gradient(circle at 12% 0%, rgba(201, 92, 78, 0.18), transparent 32%),
      radial-gradient(circle at 88% 0%, rgba(41, 113, 77, 0.18), transparent 32%),
      linear-gradient(90deg, rgba(201, 92, 78, 0.07) 0%, rgba(13, 18, 23, 0) 42%, rgba(41, 113, 77, 0.07) 100%),
      linear-gradient(180deg, #0d1217 0%, #10161c 24%, #121920 100%);
  }
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

/* ---------- Nav ---------- */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0;
  background: linear-gradient(180deg, rgba(246, 244, 241, 0.82), rgba(248, 248, 245, 0.46));
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid rgba(15, 23, 32, 0.05);
}

.nav-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  box-shadow: 0 8px 20px rgba(15, 23, 32, 0.1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible { color: var(--ink); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 12px 24px rgba(15, 23, 32, 0.14);
  transition: background 0.15s ease, transform 0.15s ease;
}

.nav-cta:hover {
  background: #1b2430;
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  nav {
    background: linear-gradient(180deg, rgba(12, 18, 24, 0.84), rgba(12, 18, 24, 0.5));
    border-bottom-color: rgba(255, 255, 255, 0.05);
  }
  .nav-cta {
    background: #0f1720;
    color: #ffffff;
  }
  .nav-cta:hover {
    background: #1b2430;
  }
}

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

footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 36px;
  background: rgba(255, 255, 255, 0.56);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}

.footer-brand img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.footer-links {
  list-style: none;
  display: flex;
  gap: 22px;
}

.footer-links a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.15s ease;
}

.footer-links a:hover { color: var(--ink); }

@media (prefers-color-scheme: dark) {
  footer {
    background: rgba(10, 15, 20, 0.78);
    border-top-color: rgba(255, 255, 255, 0.06);
  }
}

/* ---------- Theme-attribute overrides (toggle wins over @media) ---------- */

:root[data-theme="light"] {
  --ink: #0f1720;
  --body: #4d5966;
  --muted: #6d7783;
  --line: rgba(15, 23, 32, 0.1);
  --line-soft: rgba(15, 23, 32, 0.06);
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --bg: #f8f8f5;
  --bg-soft: #f3f4ef;
  --accent: #236846;
  --accent-soft: rgba(35, 104, 70, 0.08);
  --shadow-sm: 0 6px 18px rgba(15, 23, 32, 0.05);
  --shadow-md: 0 18px 44px rgba(15, 23, 32, 0.08);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --ink: #edf2f7;
  --body: #b5c0cb;
  --muted: #8f9baa;
  --line: rgba(255, 255, 255, 0.1);
  --line-soft: rgba(255, 255, 255, 0.06);
  --surface: rgba(17, 24, 31, 0.82);
  --surface-strong: rgba(20, 27, 34, 0.94);
  --bg: #0d1217;
  --bg-soft: #111820;
  --accent: #6abb8e;
  --accent-soft: rgba(106, 187, 142, 0.12);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 20px 52px rgba(0, 0, 0, 0.34);
  color-scheme: dark;
}

:root[data-theme="light"] body {
  background:
    radial-gradient(circle at 12% 0%, rgba(201, 92, 78, 0.26), transparent 34%),
    radial-gradient(circle at 88% 0%, rgba(41, 113, 77, 0.24), transparent 34%),
    linear-gradient(90deg, rgba(201, 92, 78, 0.09) 0%, rgba(248, 248, 245, 0) 42%, rgba(41, 113, 77, 0.09) 100%),
    linear-gradient(180deg, #f6f4f1 0%, #f8f8f5 24%, #fbfbf9 100%);
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(circle at 12% 0%, rgba(201, 92, 78, 0.18), transparent 32%),
    radial-gradient(circle at 88% 0%, rgba(41, 113, 77, 0.18), transparent 32%),
    linear-gradient(90deg, rgba(201, 92, 78, 0.07) 0%, rgba(13, 18, 23, 0) 42%, rgba(41, 113, 77, 0.07) 100%),
    linear-gradient(180deg, #0d1217 0%, #10161c 24%, #121920 100%);
}

:root[data-theme="light"] nav {
  background: linear-gradient(180deg, rgba(246, 244, 241, 0.82), rgba(248, 248, 245, 0.46));
  border-bottom-color: rgba(15, 23, 32, 0.05);
}

:root[data-theme="dark"] nav {
  background: linear-gradient(180deg, rgba(12, 18, 24, 0.84), rgba(12, 18, 24, 0.5));
  border-bottom-color: rgba(255, 255, 255, 0.05);
}

:root[data-theme="light"] footer {
  background: rgba(255, 255, 255, 0.56);
  border-top-color: var(--line);
}

:root[data-theme="dark"] footer {
  background: rgba(10, 15, 20, 0.78);
  border-top-color: rgba(255, 255, 255, 0.06);
}

:root[data-theme="light"] .nav-cta {
  background: var(--ink);
  color: #fff;
}

:root[data-theme="dark"] .nav-cta {
  background: #0f1720;
  color: #ffffff;
}

:root[data-theme="light"] .nav-cta:hover {
  background: #1b2430;
}

:root[data-theme="dark"] .nav-cta:hover {
  background: #1b2430;
}

/* ---------- Lace backdrop (port of design "Lace Refined" V1) ---------- */

body { isolation: isolate; }

.lace-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.lace-backdrop__ink {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(135deg, #1d5a3c 0%, #236846 28%, #5a7a52 50%, #c95c4e 78%, #d97560 100%);
  -webkit-mask-image: var(--lace-mask, none);
          mask-image: var(--lace-mask, none);
  -webkit-mask-size: 100% 100%;
          mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  opacity: 0.75;
}

@media (prefers-color-scheme: dark) {
  .lace-backdrop__ink { opacity: 0.55; }
}

:root[data-theme="dark"] .lace-backdrop__ink { opacity: 0.55; }
:root[data-theme="light"] .lace-backdrop__ink { opacity: 0.75; }

/* ---------- Mobile responsive (shared elements only) ---------- */

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-inner { padding: 10px 14px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}