/* ==========================================================================
   BitcoinNow.io — shared stylesheet
   Dark theme, system fonts, no external dependencies.
   ========================================================================== */

:root {
  --bg: #0b0e11;
  --card: #151a21;
  --card-2: #1b212a;
  --border: #283039;
  --text: #e8edf2;
  --dim: #9aa7b4;
  --orange: #f7931a;
  --green: #16c784;
  --red: #ea3943;

  --radius: 14px;
  --container: 1120px;
  --header-h: 62px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

/* --------------------------------------------------------------- reset --- */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--orange); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; font-weight: 700; }
h1 { font-size: 2rem; letter-spacing: -.02em; }
h2 { font-size: 1.35rem; letter-spacing: -.01em; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }

code, kbd, pre { font-family: var(--mono); }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ----------------------------------------------------------- container --- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

main { padding: 28px 0 56px; display: block; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--orange);
  color: #101010;
  padding: 10px 16px;
  z-index: 200;
  font-weight: 700;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* -------------------------------------------------------------- header --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 17, .92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  line-height: 1;
  flex: 0 0 28px;
}

.brand-tld { color: var(--dim); font-weight: 600; }

.nav { display: flex; align-items: center; gap: 4px; }

.nav a {
  color: var(--dim);
  font-size: .92rem;
  font-weight: 600;
  padding: 8px 11px;
  border-radius: 9px;
  white-space: nowrap;
}
.nav a:hover { color: var(--text); background: var(--card); text-decoration: none; }
.nav a.active { color: var(--orange); background: rgba(247, 147, 26, .1); }

.nav-toggle {
  display: none;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
  line-height: 0;
}
.nav-toggle svg { width: 20px; height: 20px; display: block; }

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px 20px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .nav.open { display: flex; }
  .nav a { padding: 11px 12px; font-size: 1rem; }
  .site-header { position: sticky; }
  .header-inner { position: relative; }
}

/* -------------------------------------------------------------- footer --- */

.site-footer {
  border-top: 1px solid var(--border);
  background: #090c0f;
  padding: 30px 0 40px;
  color: var(--dim);
  font-size: .88rem;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0 0 14px;
}
.footer-nav a { color: var(--dim); font-weight: 600; }
.footer-nav a:hover { color: var(--text); }
.footer-disclaimer { max-width: 760px; margin: 0; }
.footer-copy { margin: 12px 0 0; }

/* --------------------------------------------------------------- cards --- */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.section { margin: 0 0 30px; }
.section-title { font-size: 1.2rem; margin: 0 0 14px; }

/* ---------------------------------------------------------- stat grid --- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 860px) { .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 460px) { .stat-grid { grid-template-columns: 1fr; } }

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.stat-label {
  color: var(--dim);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
  margin: 0 0 6px;
}
.stat-value {
  font-size: 1.42rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin: 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.stat-sub { color: var(--dim); font-size: .82rem; margin: 4px 0 0; }

/* ---------------------------------------------------------------- hero --- */

.hero {
  background: linear-gradient(180deg, #131920 0%, var(--card) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  margin: 0 0 22px;
}
.hero h1 { font-size: clamp(1.9rem, 5vw, 2.7rem); margin: 0 0 6px; }
.hero-sub { color: var(--dim); margin: 0 0 20px; max-width: 60ch; }

.price-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
}
.price-big {
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 700;
  font-size: .95rem;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--card-2);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.chip.up { color: var(--green); background: rgba(22, 199, 132, .12); border-color: rgba(22, 199, 132, .3); }
.chip.down { color: var(--red); background: rgba(234, 57, 67, .12); border-color: rgba(234, 57, 67, .3); }

.up { color: var(--green); }
.down { color: var(--red); }

.live-dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--dim);
  font-size: .82rem;
  font-weight: 600;
  margin: 16px 0 0;
}
.live-dot::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.82); }
}
@media (prefers-reduced-motion: reduce) {
  .live-dot::before { animation: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------- chart --- */

.chart-card { padding: 18px; }
.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 14px;
}
.range-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.range-tabs button {
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--dim);
  font: inherit;
  font-size: .85rem;
  font-weight: 700;
  padding: 6px 13px;
  border-radius: 999px;
  cursor: pointer;
}
.range-tabs button:hover { color: var(--text); }
.range-tabs button[aria-selected="true"] {
  background: rgba(247, 147, 26, .14);
  border-color: rgba(247, 147, 26, .45);
  color: var(--orange);
}
.chart-wrap { position: relative; height: 340px; }
@media (max-width: 600px) { .chart-wrap { height: 260px; } }
.chart-note { color: var(--dim); font-size: .8rem; margin: 12px 0 0; }

/* --------------------------------------------------------------- table --- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  -webkit-overflow-scrolling: touch;
}
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
thead th {
  text-align: right;
  color: var(--dim);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  background: var(--card);
}
thead th:first-child, thead th.left { text-align: left; }
tbody td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
tbody td:first-child, tbody td.left { text-align: left; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--card-2); }

.coin-cell { display: flex; align-items: center; gap: 10px; }
.coin-cell img { width: 24px; height: 24px; border-radius: 50%; flex: 0 0 24px; }
.coin-name { font-weight: 600; }
.coin-sym { color: var(--dim); text-transform: uppercase; font-size: .82rem; margin-left: 4px; }

/* highlighted row on programmatic conversion pages */
tbody tr.is-current td {
  background: rgba(247, 147, 26, .1);
  color: var(--orange);
  font-weight: 700;
}
tbody tr.is-current td a { color: var(--orange); }
tbody tr.is-current:hover td { background: rgba(247, 147, 26, .16); }

/* -------------------------------------------------------------- forms --- */

label { display: block; font-weight: 600; font-size: .85rem; color: var(--dim); margin: 0 0 6px; }

input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  font-size: 1.05rem;
  padding: 12px 14px;
  border-radius: 11px;
  font-variant-numeric: tabular-nums;
  min-width: 0;
}
input:focus, select:focus { border-color: var(--orange); outline: none; }
select { cursor: pointer; appearance: none; -webkit-appearance: none; padding-right: 34px;
  background-image: linear-gradient(45deg, transparent 50%, var(--dim) 50%), linear-gradient(135deg, var(--dim) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.field { margin: 0 0 14px; }
.field-row { display: flex; gap: 10px; align-items: stretch; }
.field-row select { width: auto; flex: 0 0 108px; }
.field-row input { flex: 1 1 auto; }

.btn {
  display: inline-block;
  background: var(--orange);
  color: #10120f;
  border: 1px solid var(--orange);
  font: inherit;
  font-weight: 700;
  font-size: .95rem;
  padding: 12px 22px;
  border-radius: 11px;
  cursor: pointer;
  text-align: center;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; color: #10120f; }
.btn-secondary {
  background: var(--card-2);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { color: var(--text); border-color: var(--dim); }
.btn-sm { padding: 7px 14px; font-size: .84rem; border-radius: 9px; }

.presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }

/* --------------------------------------------------------- converter --- */

.converter-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: end;
}
.swap-mark { color: var(--dim); font-size: 1.4rem; padding-bottom: 12px; }
@media (max-width: 640px) {
  .converter-grid { grid-template-columns: 1fr; }
  .swap-mark { display: none; }
}
.rate-line {
  margin: 18px 0 0;
  color: var(--dim);
  font-size: .95rem;
  font-variant-numeric: tabular-nums;
}
.rate-line strong { color: var(--text); }

/* ------------------------------------------------------------ callouts --- */

.callout {
  border: 1px solid var(--border);
  border-left: 3px solid var(--orange);
  background: var(--card-2);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 0 0 20px;
  font-size: .93rem;
  color: var(--text);
}
.callout strong { color: var(--orange); }
.callout p:last-child { margin-bottom: 0; }
.callout-warn { border-left-color: var(--red); }
.callout-warn strong { color: var(--red); }

#error-banner {
  display: none;
  background: rgba(234, 57, 67, .1);
  border: 1px solid rgba(234, 57, 67, .4);
  color: #ffb3b8;
  border-radius: 11px;
  padding: 12px 16px;
  margin: 0 0 18px;
  font-size: .92rem;
}
#error-banner.show { display: block; }

.muted { color: var(--dim); }
.small { font-size: .85rem; }
.center { text-align: center; }
.mono { font-family: var(--mono); }

/* ----------------------------------------------------------- ad slots --- */
/* Hidden by default. app.js reveals them only when an A-Ads unit id is set. */

.ad-slot { display: none; margin: 26px 0; text-align: center; }
.ad-slot.is-active { display: block; }
.ad-label {
  color: var(--dim);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin: 0 0 6px;
}
.ad-slot iframe { border: 0; max-width: 100%; margin: 0 auto; display: block; }

/* ------------------------------------------------------ affiliate box --- */
/* Hidden by default. app.js reveals when a referral URL is configured. */

.aff-box { display: none; }
.aff-box.is-active {
  display: block;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--orange);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 0 0 22px;
}
.aff-box h3 { margin: 0 0 6px; font-size: 1rem; }
.aff-box p { margin: 0 0 12px; font-size: .92rem; color: var(--dim); }
.aff-disclosure {
  display: inline-block;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 700;
  color: var(--dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
  margin: 0 0 8px;
}

/* ----------------------------------------------------------- cta grid --- */

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.link-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--text);
}
.link-card:hover { border-color: var(--orange); text-decoration: none; }
.link-card h3 { margin: 0 0 6px; color: var(--text); font-size: 1.05rem; }
.link-card p { margin: 0; color: var(--dim); font-size: .9rem; }
.link-card .arrow { color: var(--orange); font-weight: 700; }

/* ---------------------------------------------------------- blog cards --- */

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 900px) { .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .post-grid { grid-template-columns: 1fr; } }

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--text);
  height: 100%;
}
.post-card:hover { border-color: var(--orange); text-decoration: none; }
.post-card h3 { font-size: 1.05rem; margin: 8px 0 8px; color: var(--text); }
.post-card p { color: var(--dim); font-size: .9rem; margin: 0 0 14px; }
.post-card .meta { margin-top: auto; }

.tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--orange);
  background: rgba(247, 147, 26, .1);
  border: 1px solid rgba(247, 147, 26, .28);
  border-radius: 999px;
  padding: 3px 10px;
}
.meta { color: var(--dim); font-size: .8rem; }

/* -------------------------------------------------------------- article --- */

.breadcrumb {
  font-size: .82rem;
  color: var(--dim);
  margin: 0 0 16px;
  overflow-wrap: anywhere;
}
.breadcrumb a { color: var(--dim); font-weight: 600; }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb span[aria-current] { color: var(--text); }

.article { max-width: 760px; margin: 0 auto; }
.article h1 { font-size: clamp(1.7rem, 4.6vw, 2.3rem); margin: 10px 0 12px; }
.article .lead { font-size: 1.08rem; color: var(--text); }
.article h2 { margin: 32px 0 12px; font-size: 1.3rem; scroll-margin-top: 78px; }
.article ul, .article ol { margin: 0 0 1em; padding-left: 22px; }
.article li { margin: 0 0 .45em; }
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 0 18px;
}

.toc {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 0 0 26px;
}
.toc h2 {
  font-size: .78rem !important;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--dim);
  margin: 0 0 10px !important;
}
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin: 0 0 5px; font-size: .93rem; }

details.faq {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 0;
  margin: 0 0 10px;
}
details.faq summary {
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+";
  color: var(--orange);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
  flex: 0 0 auto;
}
details.faq[open] summary::after { content: "\2212"; }
details.faq .faq-body { padding: 0 16px 14px; color: var(--dim); font-size: .94rem; }
details.faq .faq-body p:last-child { margin-bottom: 0; }

.related { margin: 40px 0 0; }
.disclaimer {
  margin: 34px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--card);
  color: var(--dim);
  font-size: .85rem;
}
.disclaimer p:last-child { margin-bottom: 0; }

/* --------------------------------------------------------- code boxes --- */

.code-box {
  position: relative;
  background: #0e1216;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 0 0 8px;
}
.code-box pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.55;
  color: #cfe3d8;
  white-space: pre;
}
.code-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 12px 10px 16px;
  border-bottom: 1px solid var(--border);
}
.code-head strong { font-size: .85rem; }

/* ---------------------------------------------------- convert page bits --- */

.convert-hero { text-align: center; padding: 26px 20px; }
.convert-value {
  font-size: clamp(2rem, 7vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin: 6px 0 4px;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.convert-eq { color: var(--dim); font-size: .95rem; margin: 0; }

.pill-links { display: flex; flex-wrap: wrap; gap: 8px; }
.pill-links a {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 13px;
  font-size: .86rem;
  font-weight: 600;
  color: var(--text);
}
.pill-links a:hover { border-color: var(--orange); color: var(--orange); text-decoration: none; }

.group-title {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--dim);
  font-weight: 700;
  margin: 26px 0 10px;
}

/* ----------------------------------------------------------- utilities --- */

.stack > * + * { margin-top: 14px; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-24 { margin-bottom: 24px; }
.nowrap { white-space: nowrap; }
.skeleton { color: var(--dim); }
.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;
}