/* ============================================================
   CryptoCalcy — shared styles for calculator & tool pages.
   Mirrors the homepage chrome, adds calculator/tool UI.
   ============================================================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--surface-canvas); color: var(--text-body);
  font-family: var(--font-body); -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }
::selection { background: color-mix(in srgb, var(--color-primary) 40%, transparent); }

.container { max-width: var(--container-xl); margin: 0 auto; padding: 0 24px; }
.overline { font-size: var(--text-overline-size); text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-muted); font-weight: var(--weight-semibold); }
.wordmark { font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -0.6px; color: var(--text-strong); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.up { color: var(--color-up); } .down { color: var(--color-down); }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: var(--z-sticky); background: color-mix(in srgb, var(--surface-canvas) 82%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border-hairline); }
.nav-inner { max-width: var(--container-xl); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-links { display: flex; gap: 24px; flex-wrap: wrap; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-muted); transition: color 140ms var(--ease-standard); }
.nav-links a:hover, .nav-links a.active { color: var(--text-strong); }
.nav-right { display: flex; align-items: center; gap: 12px; }
.theme-btn { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); background: transparent; color: var(--text-muted); cursor: pointer; transition: color 140ms, border-color 140ms; }
.theme-btn:hover { color: var(--text-strong); border-color: var(--border-strong); }

/* ---------- ad slots ---------- */
.ad-wrap { display: flex; justify-content: center; padding: 16px 24px 0; }
/* Ad-ready slots stay in the DOM for future ad code but show nothing while empty. */
.ad-slot.ad-ready { border: 0; background: none; min-height: 0; height: auto; }
.ad-slot.ad-ready:empty { display: none; }
.ad-wrap:has(.ad-ready:empty) { display: none; padding: 0; }
.ad-slot { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border: 1px dashed var(--border-strong); border-radius: var(--radius-md); color: var(--text-subtle); background: var(--surface-sunken); font-size: 11px; text-transform: uppercase; letter-spacing: 2px; }
.ad-slot.leaderboard { width: 100%; max-width: 728px; height: 90px; }
.ad-slot.rail { min-height: 250px; width: 100%; }
.ad-slot.inline { width: 100%; height: 100px; margin: 32px 0; }
.ad-dims { font-family: var(--font-mono); letter-spacing: 0.5px; opacity: 0.7; }

/* ---------- page header ---------- */
.page-head { max-width: var(--container-xl); margin: 0 auto; padding: 40px 24px 8px; }
.breadcrumb { font-size: 13px; color: var(--text-subtle); margin-bottom: 14px; display: flex; gap: 8px; align-items: center; }
.breadcrumb a { color: var(--text-muted); }
.page-title { font-family: var(--font-display); font-weight: 700; font-size: clamp(30px, 4vw, 46px); letter-spacing: -1.4px; color: var(--text-strong); margin: 0 0 10px; }
.page-sub { font-size: 17px; color: var(--text-muted); margin: 0; max-width: 620px; line-height: 1.5; }

/* ---------- calculator layout ---------- */
.calc-shell { max-width: var(--container-xl); margin: 0 auto; padding: 28px 24px 40px; display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }
@media (max-width: 980px) { .calc-shell { grid-template-columns: 1fr; } }
.calc-main { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 620px) { .calc-main { grid-template-columns: 1fr; } }
.calc-inputs, .calc-output { display: flex; flex-direction: column; gap: 16px; }
.panel-title { font-family: var(--font-display); font-weight: 600; font-size: 15px; letter-spacing: -0.2px; color: var(--text-strong); margin: 0 0 4px; display: flex; align-items: center; justify-content: space-between; }

/* ---------- fields ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font-size: 13px; font-weight: 500; color: var(--text-body); display: flex; justify-content: space-between; gap: 8px; }
.field-hint { color: var(--text-subtle); font-weight: 400; }
.field-input { display: flex; align-items: center; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); background: var(--surface-inset); overflow: hidden; transition: border-color 140ms; }
.field-input:focus-within { border-color: var(--color-primary); }
.field-input input, .field-input select { flex: 1; width: 100%; border: 0; background: transparent; color: var(--text-strong); font-family: var(--font-mono); font-size: 15px; padding: 11px 12px; outline: none; }
.field-input select { font-family: var(--font-body); cursor: pointer; }
.field-input select option { background: var(--surface-elevated); color: var(--text-strong); }
.field-input input::placeholder { color: var(--text-subtle); }
.field-affix { padding: 0 10px; color: var(--text-muted); font-family: var(--font-mono); font-size: 14px; background: var(--surface-elevated); align-self: stretch; display: flex; align-items: center; }
.field-affix.suffix { border-left: 1px solid var(--border-hairline); }
.field-error { font-size: 12px; color: var(--color-down); }

.segmented { display: inline-flex; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); overflow: hidden; background: var(--surface-inset); }
.seg { border: 0; background: transparent; color: var(--text-muted); font-family: var(--font-body); font-size: 13px; font-weight: 600; padding: 9px 16px; cursor: pointer; transition: color 120ms, background 120ms; }
.seg.on { background: var(--color-primary); color: #fff; }

/* ---------- results ---------- */
.result-big { display: flex; flex-direction: column; gap: 4px; padding: 20px; border-radius: var(--radius-lg); border: 1px solid var(--border-hairline); background: var(--surface-inset); }
.result-big.pos { border-color: color-mix(in srgb, var(--color-up) 45%, var(--border-hairline)); }
.result-big.neg { border-color: color-mix(in srgb, var(--color-down) 45%, var(--border-hairline)); }
.rb-label { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); }
.rb-value { font-family: var(--font-mono); font-weight: 700; font-size: clamp(28px, 4vw, 40px); letter-spacing: -1px; color: var(--text-strong); }
.result-big.pos .rb-value { color: var(--color-up); }
.result-big.neg .rb-value { color: var(--color-down); }
.rb-sub { font-family: var(--font-mono); font-size: 13px; color: var(--text-muted); }
.result-row { display: flex; justify-content: space-between; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--border-hairline); gap: 12px; }
.result-row:last-child { border-bottom: none; }
.rr-label { font-size: 14px; color: var(--text-muted); }
.rr-value { font-family: var(--font-mono); font-size: 15px; color: var(--text-strong); font-variant-numeric: tabular-nums; }

/* ---------- charts ---------- */
.linechart { display: block; border-radius: var(--radius-md); }
.chart-legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; font-size: 13px; color: var(--text-muted); }
.legend-dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: middle; }

/* ---------- rail ---------- */
.calc-rail { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 84px; }
.rail-card-title { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin: 0 0 12px; }
.rail-links { display: flex; flex-direction: column; gap: 2px; }
.rail-link { display: flex; justify-content: space-between; padding: 9px 10px; border-radius: var(--radius-sm); font-size: 14px; color: var(--text-muted); transition: background 120ms, color 120ms; }
.rail-link:hover { background: var(--surface-hover); color: var(--text-strong); }
.rail-link.on { background: var(--color-primary-subtle); color: var(--color-primary); font-weight: 600; }

/* ---------- YMYL ---------- */
.ymyl { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--radius-md); background: var(--color-warning-subtle); color: var(--color-warning); font-size: 13px; line-height: 1.45; }
.ymyl svg { flex-shrink: 0; margin-top: 1px; }
.ymyl-tax { background: var(--color-danger-subtle); color: var(--color-down); font-weight: 500; }

/* ---------- SEO content ---------- */
.seo-content { border-top: 1px solid var(--border-hairline); background: var(--surface-sunken); padding: 56px 24px; margin-top: 8px; }
.content-inner { max-width: var(--container-prose); margin: 0 auto; }
.content-inner h2, .content-h2 { font-family: var(--font-display); font-weight: 700; font-size: 26px; letter-spacing: -0.6px; color: var(--text-strong); margin: 36px 0 12px; }
.content-inner h3 { font-family: var(--font-display); font-weight: 600; font-size: 18px; color: var(--text-strong); margin: 24px 0 8px; }
.content-inner p, .content-inner li { font-size: 15px; line-height: 1.7; color: var(--text-muted); }
.content-inner ul, .content-inner ol { padding-left: 20px; }
.content-inner code { font-family: var(--font-mono); font-size: 13px; background: var(--surface-elevated); padding: 2px 6px; border-radius: var(--radius-xs); color: var(--text-strong); }
.formula-box { font-family: var(--font-mono); font-size: 14px; background: var(--surface-card); border: 1px solid var(--border-hairline); border-left: 3px solid var(--color-primary); border-radius: var(--radius-md); padding: 14px 16px; color: var(--text-strong); margin: 14px 0; overflow-x: auto; }
.worked-example { background: var(--surface-card); border: 1px solid var(--border-hairline); border-radius: var(--radius-lg); padding: 18px 20px; margin: 16px 0; }
.worked-example .overline { display: block; margin-bottom: 8px; }
.content-updated { font-family: var(--font-mono); font-size: 12px; color: var(--text-subtle); margin-top: 36px; padding-top: 16px; border-top: 1px solid var(--border-hairline); }

.faq { margin-top: 8px; }
.faq-item { border-bottom: 1px solid var(--border-hairline); padding: 4px 0; }
.faq-item summary { cursor: pointer; font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--text-strong); padding: 14px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-family: var(--font-mono); font-size: 20px; color: var(--text-muted); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin: 0 0 16px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--border-hairline); padding: 56px 24px 28px; }
.footer-inner { max-width: var(--container-xl); margin: 0 auto; display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.footer-brand { max-width: 320px; }
.footer-brand .wordmark { display: inline-block; margin-bottom: 14px; }
.footer-tag { font-size: 14px; color: var(--text-muted); line-height: 1.55; margin: 0 0 14px; }
.footer-attrib { font-family: var(--font-mono); font-size: 12px; color: var(--text-subtle); margin: 0; }
.footer-cols { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col-title { font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-strong); font-weight: 600; margin-bottom: 4px; }
.footer-col a { font-size: 14px; color: var(--text-muted); }
.footer-col a:hover { color: var(--text-strong); }
.footer-bottom { max-width: var(--container-xl); margin: 40px auto 0; padding-top: 20px; border-top: 1px solid var(--border-hairline); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--text-subtle); }
.footer-disc { max-width: 520px; }

/* ---------- cookie ---------- */
.cookie-banner { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: var(--z-toast); max-width: 640px; margin: 0 auto; background: var(--surface-elevated); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 16px 18px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cookie-banner p { font-size: 13px; color: var(--text-muted); margin: 0; flex: 1; min-width: 240px; line-height: 1.5; }
.cookie-actions { display: flex; gap: 8px; }

/* ---------- coin token ---------- */
.coin-token { position: relative; display: inline-flex; flex-shrink: 0; }
.coin-token img { border-radius: 50%; object-fit: contain; display: block; position: relative; z-index: 1; background: transparent; }
.coin-token-fb { position: absolute; inset: 0; display: none; border-radius: 50%; align-items: center; justify-content: center; color: #fff; font-family: var(--font-display); font-weight: 700; z-index: 0; }
.coin-token-fb.show { display: flex; }

/* ---------- tables (markets / portfolio / watchlist) ---------- */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: right; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-subtle); font-weight: 600; padding: 12px 14px; border-bottom: 1px solid var(--border-hairline); cursor: pointer; white-space: nowrap; }
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table th.left { text-align: left; }
.data-table td { text-align: right; padding: 14px; border-bottom: 1px solid var(--border-hairline); font-family: var(--font-mono); font-size: 14px; color: var(--text-body); white-space: nowrap; }
.data-table tr:hover td { background: var(--surface-hover); }
.coin-cell { display: flex; align-items: center; gap: 10px; font-family: var(--font-body); }
.coin-cell .cc-name { font-weight: 600; color: var(--text-strong); }
.coin-cell .cc-sym { color: var(--text-subtle); font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; }
.star-btn { background: none; border: 0; cursor: pointer; color: var(--text-subtle); padding: 4px; display: inline-flex; }
.star-btn.on { color: var(--amber-400); }
.star-btn:hover { color: var(--amber-400); }

.tabs-row { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.tab-pill { border: 1px solid var(--border-hairline); background: var(--surface-card); color: var(--text-muted); border-radius: var(--radius-pill); padding: 7px 16px; font-size: 13px; font-weight: 600; cursor: pointer; }
.tab-pill.on { background: var(--color-primary); color: #fff; border-color: transparent; }

.toolbar { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.search-input { flex: 1; min-width: 200px; border: 1px solid var(--border-hairline); background: var(--surface-inset); border-radius: var(--radius-md); padding: 10px 14px; color: var(--text-strong); font-family: var(--font-body); font-size: 14px; outline: none; }
.search-input:focus { border-color: var(--color-primary); }

.empty-state { text-align: center; padding: 56px 24px; color: var(--text-muted); }
.empty-state h3 { font-family: var(--font-display); color: var(--text-strong); font-size: 20px; margin: 0 0 8px; }

.spark { display: block; }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .footer-inner { flex-direction: column; gap: 32px; }
  .data-table th:nth-child(n+5), .data-table td:nth-child(n+5) { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; } }

/* ---------- prose (glossary defs, guide bodies) ---------- */
.prose { color: var(--text-body); }
.prose p { font-size: 16px; line-height: 1.75; margin: 0 0 16px; color: var(--text-muted); }
.prose h2 { font-family: var(--font-display); font-weight: 700; font-size: 24px; letter-spacing: -0.5px; color: var(--text-strong); margin: 32px 0 12px; }
.prose h3 { font-family: var(--font-display); font-weight: 600; font-size: 19px; color: var(--text-strong); margin: 24px 0 8px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 16px; }
.prose li { font-size: 16px; line-height: 1.7; color: var(--text-muted); margin-bottom: 6px; }
.prose strong { color: var(--text-strong); font-weight: 600; }
.prose a { color: var(--color-primary); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--color-primary) 35%, transparent); }
.prose a:hover { color: var(--color-primary-hover); border-bottom-color: var(--color-primary-hover); }
.prose .formula-box { font-family: var(--font-mono); font-size: 14px; white-space: pre-wrap; background: var(--surface-card); border: 1px solid var(--border-hairline); border-left: 3px solid var(--color-primary); border-radius: var(--radius-md); padding: 14px 16px; color: var(--text-strong); margin: 16px 0; }
.prose .ymyl { margin: 0 0 20px; }
.guide-body { max-width: none; }
.guide-body > p:first-child { font-size: 18px; color: var(--text-body); }

.guide-byline { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--text-subtle); font-family: var(--font-mono); margin-top: 6px; }

.chip-link { display: inline-flex; align-items: center; gap: 4px; padding: 8px 14px; border: 1px solid var(--border-hairline); border-radius: var(--radius-pill); font-size: 13px; font-weight: 600; color: var(--text-body); background: var(--surface-card); }
.chip-link:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ---------- glossary index ---------- */
.az-bar { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0 8px; position: sticky; top: 64px; background: color-mix(in srgb, var(--surface-canvas) 90%, transparent); padding: 8px 0; z-index: 5; backdrop-filter: blur(8px); }
.az-link { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--text-muted); border: 1px solid var(--border-hairline); }
.az-link:hover { background: var(--color-primary); color: #fff; border-color: transparent; }
.az-heading { font-family: var(--font-display); font-weight: 700; font-size: 22px; color: var(--color-primary); margin: 0 0 12px; }
.glossary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.gloss-card { display: flex; flex-direction: column; gap: 5px; padding: 14px 16px; border: 1px solid var(--border-hairline); border-radius: var(--radius-lg); background: var(--surface-card); transition: transform 140ms var(--ease-standard), border-color 140ms; }
.gloss-card:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.gloss-term { font-family: var(--font-display); font-weight: 600; font-size: 16px; color: var(--text-strong); }
.gloss-snippet { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

/* ---------- static content page tabs ---------- */
.page-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.prose textarea:focus { outline: none; }