/* AdvisorCore — website styles
   Mirrors the app's design system (Theme.swift):
   indigo #312E81 · indigoBright #4F46E5 · purple #7C3AED
   lavender #EEF2FF · lavenderDeep #E0E7FF · teal #0D9488 */

:root {
  --indigo: #312E81;
  --indigo-bright: #4F46E5;
  --purple: #7C3AED;
  --lavender: #EEF2FF;
  --lavender-deep: #E0E7FF;
  --teal: #0B7A70;
  --sky: #0369A1;
  --amber: #B45309;
  --green: #047857;
  --rose: #E11D48;

  --text: #17171C;
  --text-secondary: #55555F;
  --text-tertiary: #83838D;
  --surface: rgba(255, 255, 255, 0.70);
  --card-border: rgba(49, 46, 129, 0.10);
  --page-top: #EEF2FF;
  --page-bottom: #FFFFFF;

  --gradient: linear-gradient(135deg, #312E81 0%, #7C3AED 100%);
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(49, 46, 129, 0.07);
  --shadow: 0 6px 24px rgba(49, 46, 129, 0.10);
  --shadow-lg: 0 14px 44px rgba(49, 46, 129, 0.18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --teal: #14B8A6;
    --sky: #38BDF8;
    --amber: #FBBF24;
    --green: #34D399;
    --text: #F4F4F7;
    --text-secondary: #ADADB8;
    --text-tertiary: #80808B;
    --surface: rgba(255, 255, 255, 0.055);
    --card-border: rgba(255, 255, 255, 0.10);
    --page-top: #0B0B12;
    --page-bottom: #14141D;
    --lavender-deep: rgba(199, 210, 254, 0.14);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.30);
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.38);
    --shadow-lg: 0 14px 44px rgba(0, 0, 0, 0.50);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
               system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 520px at 50% -8%, rgba(124, 58, 237, 0.13), transparent 62%),
    linear-gradient(180deg, var(--page-top) 0%, var(--page-bottom) 55%);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }

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

header.site { padding: 22px 0 4px; }

.nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

.brand {
  display: flex; align-items: center; gap: 11px;
  text-decoration: none; color: var(--text);
  font-weight: 700; font-size: 1.06rem; letter-spacing: -0.01em;
  margin-right: auto;
}

.brand img {
  width: 36px; height: 36px;
  border-radius: 9px;
  box-shadow: var(--shadow-sm);
}

.nav a.link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem; font-weight: 550;
  padding: 5px 0;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav a.link:hover,
.nav a.link[aria-current="page"] {
  color: var(--indigo-bright);
  border-bottom-color: var(--indigo-bright);
}

@media (prefers-color-scheme: dark) {
  .nav a.link:hover,
  .nav a.link[aria-current="page"] { color: #A5B4FC; border-bottom-color: #A5B4FC; }
}

/* ---------- Hero ---------- */

.hero { padding: 52px 0 34px; text-align: center; }

.hero img.app-icon {
  width: 96px; height: 96px;
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  margin-bottom: 26px;
}

h1 {
  font-size: clamp(2.05rem, 6vw, 2.95rem);
  line-height: 1.14;
  margin: 0 0 15px;
  letter-spacing: -0.025em;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

@media (prefers-color-scheme: dark) {
  h1 { background: linear-gradient(135deg, #A5B4FC 0%, #C4B5FD 100%);
       -webkit-background-clip: text; background-clip: text; }
}

.tagline {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 545px; margin: 0 auto 28px;
}

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

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--gradient); color: #fff;
  text-decoration: none; font-weight: 600; font-size: 1rem;
  padding: 14px 28px; border-radius: 999px;
  box-shadow: 0 6px 20px rgba(76, 46, 160, 0.32);
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 11px 28px rgba(76, 46, 160, 0.38); }
.btn:active { transform: translateY(0); }

.btn.ghost {
  background: transparent; color: var(--indigo-bright);
  border: 1.5px solid var(--card-border); box-shadow: none;
}

.btn-note { display: block; margin-top: 13px; font-size: 0.87rem; color: var(--text-tertiary); }

/* ---------- Cards ---------- */

.card, .feature {
  background: var(--surface);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card { padding: 22px 24px; margin: 16px 0; }
.card h3 { margin: 0 0 7px; font-size: 1.06rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--text-secondary); font-size: 0.97rem; }
.card.accent { border-color: rgba(124, 58, 237, 0.34); }

.features {
  display: grid; gap: 14px; grid-template-columns: 1fr; margin: 38px 0 8px;
}

@media (min-width: 640px) { .features { grid-template-columns: 1fr 1fr; } }

.feature { padding: 21px; transition: transform 0.16s ease, box-shadow 0.16s ease; }
.feature:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.feature .icon {
  width: 40px; height: 40px; border-radius: 11px;
  display: grid; place-items: center;
  margin-bottom: 13px; color: #fff;
}

.feature .icon svg { width: 20px; height: 20px; }

.i-indigo { background: linear-gradient(135deg, #4F46E5, #6366F1); }
.i-purple { background: linear-gradient(135deg, #7C3AED, #9333EA); }
.i-teal   { background: linear-gradient(135deg, #0D9488, #14B8A6); }
.i-amber  { background: linear-gradient(135deg, #D97706, #F59E0B); }
.i-sky    { background: linear-gradient(135deg, #0284C7, #0EA5E9); }
.i-green  { background: linear-gradient(135deg, #059669, #10B981); }

.feature h3 { margin: 0 0 6px; font-size: 1rem; letter-spacing: -0.01em; }
.feature p { margin: 0; font-size: 0.92rem; color: var(--text-secondary); }

/* ---------- Content pages ---------- */

.page-head { padding: 38px 0 4px; }
.page-head h1 { font-size: clamp(1.75rem, 5vw, 2.35rem); text-align: left; margin-bottom: 8px; }
.updated { color: var(--text-tertiary); font-size: 0.88rem; margin: 0 0 24px; }

.prose h2 {
  font-size: 1.15rem; margin: 34px 0 10px;
  letter-spacing: -0.015em; color: var(--text); scroll-margin-top: 20px;
}

.prose h2::before {
  content: ""; display: inline-block;
  width: 4px; height: 0.92em; border-radius: 2px;
  background: var(--gradient); margin-right: 11px; vertical-align: -0.08em;
}

.prose p, .prose li { color: var(--text-secondary); font-size: 0.98rem; }
.prose ul { padding-left: 21px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--text); font-weight: 640; }
.prose a { color: var(--indigo-bright); text-underline-offset: 2px; }

@media (prefers-color-scheme: dark) { .prose a { color: #A5B4FC; } }

.callout {
  border-left: 3px solid var(--green);
  background: rgba(4, 120, 87, 0.07);
  border-radius: 0 14px 14px 0;
  padding: 15px 19px; margin: 22px 0;
}

.callout p { margin: 0; color: var(--text-secondary); font-size: 0.95rem; }
.callout.warn { border-left-color: var(--amber); background: rgba(180, 83, 9, 0.07); }

@media (prefers-color-scheme: dark) {
  .callout { background: rgba(52, 211, 153, 0.09); }
  .callout.warn { background: rgba(251, 191, 36, 0.09); }
}

/* Table of contents on long legal pages */
.toc {
  background: var(--surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px 20px; margin: 0 0 6px;
  box-shadow: var(--shadow-sm);
}

.toc p { margin: 0 0 8px; font-size: 0.8rem; font-weight: 700;
         letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-tertiary); }
.toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 26px; }
.toc li { margin-bottom: 4px; font-size: 0.88rem; }
.toc a { color: var(--text-secondary); text-decoration: none; }
.toc a:hover { color: var(--indigo-bright); text-decoration: underline; }

@media (max-width: 560px) { .toc ol { columns: 1; } }

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

footer.site {
  margin-top: 58px; padding: 28px 0 44px;
  border-top: 1px solid var(--card-border);
  color: var(--text-tertiary); font-size: 0.86rem;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 14px; }
footer.site a { color: var(--text-secondary); text-decoration: none; }
footer.site a:hover { color: var(--indigo-bright); }
footer .legal { margin: 0; line-height: 1.6; font-size: 0.83rem; }
footer .legal + .legal { margin-top: 9px; }

.mail {
  display: inline-block; font-weight: 640;
  color: var(--indigo-bright); text-decoration: none; font-size: 1.02rem;
}

.mail:hover { text-decoration: underline; }

@media (prefers-color-scheme: dark) { .mail { color: #A5B4FC; } }

/* ---------- Accessibility ---------- */

a:focus-visible, .btn:focus-visible {
  outline: 2.5px solid var(--indigo-bright);
  outline-offset: 3px; border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .feature:hover, .btn:hover { transform: none; }
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}