/* FinanceHub v3: motion, depth and the sections that fill the empty space.
   Loaded after site.css. Everything animated sits inside prefers-reduced-motion: no-preference. */

/* ---------- Ambient background ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60vmax 42vmax at 88% -8%, color-mix(in srgb, var(--accent) 15%, transparent), transparent 62%),
    radial-gradient(48vmax 38vmax at -8% 34%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 62%);
}

/* ---------- Scroll progress + header ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 1200;
  transform-origin: 0 50%;
  transform: scaleX(var(--p, 0));
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 40%, #fff));
  pointer-events: none;
}
.site-header { transition: box-shadow 0.4s var(--ease), background-color 0.4s var(--ease); }
.site-header.is-scrolled { box-shadow: 0 10px 30px -18px rgb(0 0 0 / 0.55); }

/* ---------- Hero ---------- */
.hero { position: relative; isolation: isolate; overflow-x: clip; }
.hero h1 em {
  background: linear-gradient(100deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #7fd6c2) 60%, var(--accent));
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-visual {
  background: #0a1c20;
  perspective: 900px;
  transform-style: preserve-3d;
  will-change: transform;
}
.hero-chart { position: absolute; inset: 0; width: 100%; height: 100%; }
.hc-grid path { stroke: rgb(255 255 255 / 0.07); stroke-width: 1; fill: none; }
.hc-flat { stroke: rgb(255 255 255 / 0.4); stroke-width: 2; stroke-dasharray: 6 8; fill: none; }
.hc-line { stroke: #8bbb92; stroke-width: 3.5; stroke-linecap: round; fill: none; stroke-dasharray: 1; stroke-dashoffset: 0; filter: drop-shadow(0 0 10px rgb(139 187 146 / 0.55)); }
.hc-end circle { fill: #bfe3c4; }
.hc-end .hc-pulse { fill: #8bbb92; opacity: 0.35; transform-box: fill-box; transform-origin: center; }
.hc-labels text { font: 500 12px var(--mono); fill: rgb(255 255 255 / 0.5); letter-spacing: 0.08em; text-transform: uppercase; }
.chip {
  position: absolute;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px 8px 11px;
  border-radius: var(--r-pill);
  font-size: 0.82rem; font-weight: 600;
  color: #e3eee7;
  background: rgb(8 28 31 / 0.72);
  border: 1px solid rgb(255 255 255 / 0.12);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.chip i { color: #8bbb92; font-size: 1rem; }
.chip-a { top: 9%; left: 7%; }
.chip-b { bottom: 17%; right: 7%; }
.chip-b i { color: rgb(255 255 255 / 0.6); }
.hero-note {
  position: absolute; left: 16px; bottom: 10px;
  font-size: 0.72rem; color: rgb(255 255 255 / 0.55);
}

/* ---------- Ticker (fills the band between hero and facts) ---------- */
.ticker {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ticker-track { display: flex; width: max-content; }
.ticker ul { display: flex; flex: none; list-style: none; margin: 0; padding: 0; }
.ticker li {
  display: flex; align-items: center; gap: 28px;
  padding: 14px 0 14px 28px;
  font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); white-space: nowrap;
}
.ticker li::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); opacity: 0.7; }

/* ---------- Spotlight cards ---------- */
.tile, .term, .step a, .value, .community-inner { position: relative; }
.tile::before, .term::before, .step a::before, .value::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 65%);
}
.tile:hover::before, .term:hover::before, .step a:hover::before, .value:hover::before { opacity: 1; }
.tile > *, .term > *, .step a > *, .value > * { position: relative; }

/* ---------- Learning path ---------- */
.steps { list-style: none; margin: 0; padding: 18px 0 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; position: relative; isolation: isolate; }
.steps::before, .steps::after {
  content: ""; position: absolute; z-index: 0; top: 18px; left: 14px; right: 14px; height: 2px; border-radius: 2px;
}
.steps::before { background: var(--line); }
.steps::after { background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 35%, transparent)); transform-origin: 0 50%; transform: scaleX(0); }
.steps.is-in::after { transform: scaleX(1); transition: transform 1.6s var(--ease) 0.2s; }
.step { position: relative; z-index: 1; }
.step a {
  display: block; height: 100%;
  padding: 44px 22px 24px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.step a:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: var(--shadow); }
.step-n {
  position: absolute; top: 0; left: 0;
  transform: translate(18px, -14px);
  display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 50%;
  font: 600 0.72rem var(--mono);
  color: var(--accent-ink); background: var(--accent);
  box-shadow: 0 0 0 5px var(--bg);
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; gap: 16px; padding-left: 22px; }
  .steps::before, .steps::after { top: 30px; bottom: 30px; left: 14px; right: auto; width: 2px; height: auto; }
  .steps::after { transform-origin: 50% 0; transform: scaleY(0); }
  .steps.is-in::after { transform: scaleY(1); }
  .step a { padding: 22px 20px 20px 28px; }
  .step-n { top: 20px; left: -22px; transform: none; }
}

/* ---------- Terms ---------- */
.terms-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.term {
  display: flex; flex-direction: column; gap: 10px;
  padding: 24px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.term:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: var(--shadow); }
.term-k { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; }
.term p { color: var(--muted); max-width: 36ch; }
.term-go { margin-top: auto; padding-top: 6px; display: inline-flex; align-items: center; gap: 6px; font-size: 0.9rem; font-weight: 600; color: var(--accent); }
.term-go i { transition: transform 0.3s var(--ease); }
.term:hover .term-go i { transform: translateX(4px); }
@media (max-width: 900px) { .terms-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .terms-grid { grid-template-columns: 1fr; } }

/* ---------- Facts ---------- */
.facts dd { font-variant-numeric: tabular-nums; }

/* ---------- Page intros (About, Blog, Privacy) ---------- */
.page-intro { position: relative; isolation: isolate; overflow-x: clip; }
.page-intro::before {
  content: ""; position: absolute; z-index: -1; right: -6%; top: -40%;
  width: min(560px, 70vw); aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 18%, transparent), transparent);
  filter: blur(30px);
}

/* ---------- Lessons ---------- */
.lesson-body > p:first-child { font-size: 1.2rem; color: var(--ink); line-height: 1.65; }
.lesson-note {
  margin: 28px 0 0; padding: 18px 20px;
  display: flex; gap: 14px; align-items: flex-start;
  border-radius: var(--r-lg); border: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent-soft) 55%, transparent);
  color: var(--muted); font-size: 0.95rem;
}
.lesson-note i { color: var(--accent); font-size: 1.35rem; flex: none; margin-top: 1px; }
.lesson-note a { color: var(--accent); text-underline-offset: 3px; }

/* ---------- Footer ---------- */
.site-footer .container { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.3fr) minmax(0, 0.8fr); gap: 32px 48px; }
.footer-lessons h2, .footer-links-h { font: 600 0.78rem var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); margin-bottom: 12px; }
.footer-lessons ul { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 28px; }
.footer-lessons li { break-inside: avoid; margin-bottom: 6px; }
.footer-lessons a { color: var(--muted); text-decoration: none; }
.footer-lessons a:hover { color: var(--accent); }
.site-footer .footer-links { display: grid; gap: 6px; justify-items: start; align-content: start; }
@media (max-width: 900px) { .site-footer .container { grid-template-columns: 1fr 1fr; } .site-footer .container > div:first-child { grid-column: 1 / -1; } }
@media (max-width: 560px) { .site-footer .container { grid-template-columns: 1fr; } }

/* ---------- Buttons: soft sheen ---------- */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, transparent 35%, rgb(255 255 255 / 0.28) 50%, transparent 65%);
  transform: translateX(-120%);
}

/* ================= Motion (opt-in) ================= */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  ::view-transition-old(root) { animation: 0.25s var(--ease) both vt-out; }
  ::view-transition-new(root) { animation: 0.45s var(--ease) both vt-in; }
  @keyframes vt-out { to { opacity: 0; } }
  @keyframes vt-in { from { opacity: 0; transform: translateY(8px); } }
  .site-header { view-transition-name: site-header; }
  #music-player { view-transition-name: music-player; }

  /* Better reveal: rise, de-blur, settle */
  .js .reveal { transform: translateY(26px) scale(0.985); filter: blur(5px); transition: opacity 0.8s var(--ease), transform 0.9s var(--ease), filter 0.8s var(--ease); transition-delay: calc(var(--i, 0) * 80ms); }
  .js .reveal.is-in { transform: none; filter: none; }

  /* Hero: drifting aurora, gradient shimmer on the accent word, chart draws itself */
  .hero::before, .hero::after {
    content: ""; position: absolute; z-index: -1; border-radius: 50%; pointer-events: none; filter: blur(70px);
  }
  .hero::before { width: 44vmax; height: 44vmax; left: -10%; top: -30%; background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 24%, transparent), transparent); animation: drift-a 24s ease-in-out infinite alternate; }
  .hero::after { width: 36vmax; height: 36vmax; right: -8%; top: 0; background: radial-gradient(closest-side, rgb(40 150 150 / 0.2), transparent); animation: drift-b 28s ease-in-out infinite alternate; }
  @keyframes drift-a { to { transform: translate(8vmax, 5vmax) scale(1.15); } }
  @keyframes drift-b { to { transform: translate(-6vmax, 6vmax) scale(0.9); } }
  .hero h1 em { animation: shimmer 7s ease-in-out infinite; }
  @keyframes shimmer { 50% { background-position: 100% 0; } }

  .hc-line { stroke-dashoffset: 1; animation: draw 2.4s cubic-bezier(0.65, 0, 0.2, 1) 0.5s forwards; }
  .hc-area { opacity: 0; animation: fade-in 1.4s ease 1.6s forwards; }
  .hc-flat { stroke-dashoffset: 0; animation: dash 18s linear infinite; }
  .hc-end { opacity: 0; animation: fade-in 0.5s ease 2.7s forwards; }
  .hc-end .hc-pulse { animation: pulse 2.2s ease-out 2.9s infinite; }
  .chip-a { animation: float 7s ease-in-out infinite, enter 0.9s var(--ease) 0.9s both; }
  .chip-b { animation: float 8s ease-in-out -3s infinite, enter 0.9s var(--ease) 1.1s both; }
  @keyframes draw { to { stroke-dashoffset: 0; } }
  @keyframes fade-in { to { opacity: 1; } }
  @keyframes dash { to { stroke-dashoffset: -140; } }
  @keyframes pulse { from { transform: scale(1); opacity: 0.45; } to { transform: scale(3.4); opacity: 0; } }
  @keyframes float { 50% { translate: 0 -8px; } }

  /* Ticker scrolls; pauses when hovered or focused inside */
  .ticker-track { animation: ticker 55s linear infinite; }
  .ticker:hover .ticker-track { animation-play-state: paused; }
  @keyframes ticker { to { transform: translateX(-50%); } }

  .btn-primary:hover::after { animation: sheen 0.9s var(--ease); }
  @keyframes sheen { to { transform: translateX(120%); } }
  .tile { transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease); }
}
@media (prefers-reduced-motion: reduce) {
  .ticker { -webkit-mask-image: none; mask-image: none; overflow-x: auto; }
  .ticker-track { transform: none; }
  .ticker ul + ul { display: none; }
  .steps::after { transform: none !important; }
  .scroll-progress { display: none; }
}
@media print { .ticker, .scroll-progress, #consent-banner, #music-player { display: none !important; } }

/* ---------- All lessons page ---------- */
.lessons-page { padding: 8px 0 96px; }
.lesson-tools { display: grid; gap: 18px; margin-bottom: 14px; }
.search-field label { display: block; font-size: 0.92rem; font-weight: 600; margin-bottom: 8px; }
.search-field input {
  width: 100%; max-width: 520px; height: 50px; padding: 0 16px;
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--muted) 45%, var(--line)); border-radius: var(--r-md);
}
.search-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-btn {
  height: 40px; padding: 0 16px; border-radius: var(--r-pill); cursor: pointer;
  font-weight: 500; font-size: 0.93rem; color: var(--ink); background: transparent;
  border: 1px solid var(--line);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease);
}
.chip-btn:hover { border-color: var(--accent); color: var(--accent); }
.chip-btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.lesson-status { margin: 4px 0 28px; font-size: 0.9rem; color: var(--muted); min-height: 1.4em; }
.lesson-group + .lesson-group { margin-top: 44px; }
.lesson-group .section-head { margin-bottom: 18px; }
.lesson-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.lesson-card {
  position: relative; display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto; align-items: center; gap: 16px;
  height: 100%; padding: 20px 22px;
  border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--surface); text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.lesson-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: var(--shadow); }
.lesson-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity 0.35s var(--ease);
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 16%, transparent), transparent 65%);
}
.lesson-card:hover::before { opacity: 1; }
.lesson-card > * { position: relative; }
.lesson-n { font: 500 0.78rem var(--mono); color: var(--muted); letter-spacing: 0.08em; }
.lesson-card .ph-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); font-size: 1.4rem;
}
.lc-text h3 { font-size: 1.08rem; margin-bottom: 4px; }
.lc-text p { color: var(--muted); font-size: 0.93rem; }
.lesson-card .go { color: var(--muted); font-size: 1.2rem; transition: transform 0.3s var(--ease), color 0.3s var(--ease); }
.lesson-card:hover .go { transform: translateX(4px); color: var(--accent); }
.lesson-empty { padding: 40px 0; color: var(--muted); font-size: 1.05rem; }
@media (max-width: 760px) {
  .lesson-grid { grid-template-columns: 1fr; }
  .lesson-card { grid-template-columns: auto minmax(0, 1fr) auto; padding: 18px; }
  .lesson-n { display: none; }
}
/* ---------- No-image backgrounds (the old chart photo was removed: source and licence unknown) ---------- */
.tile--feature { background: radial-gradient(120% 120% at 100% 0%, #1f5f55 0%, #0b2a2e 55%, #08181b 100%); }
.login-visual { background: radial-gradient(120% 120% at 100% 0%, #1f5f55 0%, #0b2a2e 55%, #08181b 100%); }
.site-footer .disclaimer a { color: var(--accent); text-underline-offset: 3px; }

/* ---------- Calculators ---------- */
.calc-section { padding: 8px 0 28px; }
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 28px; align-items: start; }
.calc-form, .calc-out { border: 1px solid var(--line); background: var(--surface); border-radius: var(--r-lg); padding: 26px; }
.calc-out { position: sticky; top: calc(var(--header-h) + 20px); min-height: 220px; }
.calc input[type="number"] {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: var(--bg);
  border: 1px solid color-mix(in srgb, var(--muted) 45%, var(--line)); border-radius: var(--r-md); padding: 12px 14px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.calc input[type="number"]:hover { border-color: var(--muted); }
.calc input[type="number"]:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.calc-h { font-size: 1.1rem; letter-spacing: -0.01em; margin-bottom: 18px; }
h3.calc-h { margin: 22px 0 6px; }
.calc-big { font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; color: var(--accent); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.calc-sub { color: var(--muted); margin: 6px 0 14px; }
.calc-msg { color: var(--danger); font-weight: 500; }
.calc-out dl { margin: 8px 0 0; }
.calc-row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.calc-row dt { color: var(--muted); }
.calc-row dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }
.calc-row.strong dd { color: var(--accent); }
.calc-bar { height: 14px; border-radius: 99px; background: var(--surface-2); overflow: hidden; margin-top: 18px; }
.calc-bar span { display: block; height: 100%; background: var(--accent); border-radius: 99px; transition: width 0.5s var(--ease); }
.calc-legend { display: flex; gap: 18px; align-items: center; margin-top: 8px; font-size: 0.88rem; color: var(--muted); }
.calc-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; }
.calc-legend .k1 { background: var(--accent); }
.calc-legend .k2 { background: var(--surface-2); border: 1px solid var(--muted); }
.calc-table { overflow-x: auto; margin-top: 10px; }
.calc-table table { width: 100%; border-collapse: collapse; font-size: 0.93rem; font-variant-numeric: tabular-nums; }
.calc-table th, .calc-table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); color: var(--muted); }
.calc-table th { color: var(--ink); font-weight: 600; }
.calc details { margin-top: 18px; }
.calc summary { cursor: pointer; font-weight: 600; padding: 6px 0; }
.calc summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
@media (max-width: 860px) {
  .calc { grid-template-columns: 1fr; }
  .calc-out { position: static; }
  .calc-form, .calc-out { padding: 20px; }
}

/* ---------- Related block on lesson pages ---------- */
.related { margin-top: 36px; }
.related h2 { font-size: 1.15rem; letter-spacing: -0.01em; margin-bottom: 14px; }
.related-tool {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: center;
  padding: 18px 20px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--surface); text-decoration: none;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.related-tool:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); box-shadow: var(--shadow); }
.related-tool > i:first-child { font-size: 1.5rem; color: var(--accent); }
.related-tool strong { display: block; }
.related-tool small { color: var(--muted); font-size: 0.9rem; }
.related-list { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 4px; }
.related-list a { display: inline-block; padding: 8px 0; color: var(--ink); text-underline-offset: 3px; }
.related-list a:hover { color: var(--accent); }