/* Crypto Idiot — dark theme, mobile-first */
:root {
  --bg: #0d1117;
  --bg-alt: #131a23;
  --card: #1a2230;
  --card-border: #26314a;
  --text: #e8edf5;
  --muted: #9aa7bd;
  --accent: #f7931a; /* bitcoin orange */
  --accent-2: #22d3ee;
  --radius: 14px;
  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.accent { color: var(--accent); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.logo { font-weight: 800; font-size: 1.25rem; color: var(--text); text-decoration: none; letter-spacing: -0.5px; }
.logo .dot { color: var(--muted); font-weight: 500; }
.main-nav { display: flex; gap: 26px; align-items: center; }
.main-nav a { color: var(--muted); text-decoration: none; font-weight: 500; transition: color .2s; }
.main-nav a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent); color: #111 !important; padding: 8px 16px;
  border-radius: 999px; font-weight: 700 !important;
}
.nav-cta:hover { background: #ffa63d; }
.nav-toggle {
  display: none; background: none; border: none; color: var(--text);
  font-size: 1.5rem; cursor: pointer;
}

/* Hero */
.hero { padding: 84px 0 64px; text-align: center; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(247, 147, 26, 0.12), transparent 60%),
    radial-gradient(600px 300px at 80% 20%, rgba(34, 211, 238, 0.08), transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; }
.hero-badge {
  display: inline-block; background: rgba(247, 147, 26, 0.12); color: var(--accent);
  border: 1px solid rgba(247, 147, 26, 0.35); padding: 6px 14px; border-radius: 999px;
  font-size: 0.85rem; font-weight: 600; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(2.1rem, 5.5vw, 3.6rem); line-height: 1.12; letter-spacing: -1.5px; }
.hero-sub { max-width: 620px; margin: 20px auto 32px; color: var(--muted); font-size: 1.12rem; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; justify-content: center; margin-top: 44px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.6rem; font-weight: 800; color: var(--accent-2); }
.stat-label { font-size: 0.85rem; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 10px; font-weight: 700;
  text-decoration: none; border: none; cursor: pointer; font-size: 1rem; transition: transform .15s, background .2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #111; }
.btn-primary:hover { background: #ffa63d; }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--card-border); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-block { width: 100%; }

/* Ticker */
.ticker { background: var(--bg-alt); border-block: 1px solid var(--card-border); overflow: hidden; padding: 10px 0; }
.ticker-track { display: flex; gap: 34px; white-space: nowrap; overflow-x: auto; scrollbar-width: none; justify-content: center; flex-wrap: wrap; padding: 0 16px; }
.ticker-track::-webkit-scrollbar { display: none; }
.ticker-item { font-size: 0.92rem; color: var(--muted); }
.ticker-item b { color: var(--text); }
.ticker-item .up { color: #22c55e; }
.ticker-item .down { color: #ef4444; }
.ticker-loading { color: var(--muted); }

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: clamp(1.5rem, 3.5vw, 2.2rem); letter-spacing: -0.8px; text-align: center; }
.section-sub { text-align: center; color: var(--muted); margin: 10px 0 40px; }

/* Tool grid */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.tool-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 26px; transition: border-color .2s, transform .2s;
}
.tool-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.tool-card h3 { font-size: 1.15rem; margin-bottom: 6px; }
.tool-desc { color: var(--muted); font-size: 0.95rem; margin-bottom: 18px; }
.tool-note { color: var(--muted); font-size: 0.78rem; margin-top: 14px; line-height: 1.5; }

/* Converter */
.conv-row { display: flex; gap: 10px; margin-bottom: 10px; }
.conv-row input, .conv-row select, .dca input, .dca select {
  background: var(--bg); border: 1px solid var(--card-border); color: var(--text);
  padding: 11px 14px; border-radius: 9px; font-size: 1rem; width: 100%;
}
.conv-row input:first-child, .conv-row input[readonly] { flex: 1.4; }
.conv-row select { flex: 1; cursor: pointer; }
.conv-row input:focus, .conv-row select:focus, .dca input:focus, .dca select:focus { outline: 2px solid var(--accent); border-color: transparent; }
.conv-swap { text-align: center; color: var(--muted); font-size: 1.2rem; margin: 4px 0; }
#convResult { font-weight: 700; color: var(--accent-2); }
.conv-fixed { flex: 1; font-weight: 700; color: var(--muted); text-align: center; }

/* DCA */
.dca label { display: block; font-size: 0.88rem; color: var(--muted); margin-bottom: 12px; }
.dca input, .dca select { margin-top: 5px; }
.dca-result { margin-top: 18px; border-top: 1px dashed var(--card-border); padding-top: 14px; }
.dca-stat { display: flex; justify-content: space-between; padding: 5px 0; font-size: 0.95rem; }
.dca-stat span { color: var(--muted); }
.dca-stat strong { color: var(--accent-2); }
.dca-stat:last-of-type strong.pos { color: #22c55e; }
.dca-stat:last-of-type strong.neg { color: #ef4444; }

/* Countdown */
.countdown { display: flex; gap: 12px; justify-content: center; margin: 18px 0 8px; flex-wrap: wrap; }
.cd-unit {
  background: var(--bg); border: 1px solid var(--card-border); border-radius: 10px;
  padding: 14px 10px; min-width: 72px; text-align: center;
}
.cd-num { display: block; font-size: 1.7rem; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; }
.cd-label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }

/* Fear & Greed */
.fng-gauge { position: relative; max-width: 240px; margin: 0 auto; }
.fng-svg { width: 100%; display: block; }
.fng-value {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  font-size: 2rem; font-weight: 800; color: var(--text); font-variant-numeric: tabular-nums;
}
.fng-label { text-align: center; margin-top: 12px; font-weight: 700; font-size: 1.05rem; }

/* Learn grid */
.learn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.learn-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 24px; text-decoration: none; color: var(--text); transition: border-color .2s, transform .2s;
  display: block;
}
.learn-card:hover { border-color: var(--accent-2); transform: translateY(-3px); }
.learn-icon { font-size: 1.8rem; display: block; margin-bottom: 12px; }
.learn-card h4 { margin-bottom: 6px; font-size: 1.02rem; }
.learn-card p { color: var(--muted); font-size: 0.9rem; }

/* Blog */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.post-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: var(--radius);
  padding: 24px; display: flex; flex-direction: column; gap: 10px;
}
.post-tag {
  align-self: flex-start; background: rgba(34, 211, 238, 0.12); color: var(--accent-2);
  font-size: 0.75rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; text-transform: uppercase; letter-spacing: 0.5px;
}
.post-card h4 a { color: var(--text); text-decoration: none; font-size: 1.05rem; line-height: 1.4; }
.post-card h4 a:hover { color: var(--accent); }
.post-card p { color: var(--muted); font-size: 0.92rem; flex: 1; }
.post-meta { font-size: 0.8rem; color: var(--muted); }

/* Newsletter */
.newsletter-inner { text-align: center; }
.newsletter-form { display: flex; gap: 10px; justify-content: center; max-width: 480px; margin: 0 auto; }
.newsletter-form input {
  flex: 1; background: var(--card); border: 1px solid var(--card-border); color: var(--text);
  padding: 12px 16px; border-radius: 10px; font-size: 1rem;
}
.newsletter-form input:focus { outline: 2px solid var(--accent); }
.newsletter-msg { margin-top: 14px; color: #22c55e; font-weight: 600; }

/* Footer */
.site-footer { border-top: 1px solid var(--card-border); padding: 44px 0 24px; background: var(--bg-alt); }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
.footer-note { color: var(--muted); font-size: 0.88rem; margin-top: 10px; }
.footer-links { display: flex; gap: 22px; align-items: flex-start; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 0.92rem; }
.footer-links a:hover { color: var(--text); }
.copyright { text-align: center; color: var(--muted); font-size: 0.8rem; margin-top: 34px; }

/* Blog article pages */
.article-hero { padding: 60px 0 30px; text-align: center; }
.article-hero h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); letter-spacing: -1px; max-width: 760px; margin: 12px auto 0; }
.article-meta { color: var(--muted); font-size: 0.9rem; margin-top: 14px; }
.article-body { max-width: 720px; margin: 0 auto; padding: 20px 20px 80px; }
.article-body h2 { margin: 38px 0 12px; font-size: 1.35rem; letter-spacing: -0.4px; }
.article-body p { color: #c3cddc; margin-bottom: 16px; }
.article-body ul, .article-body ol { color: #c3cddc; margin: 0 0 16px 22px; }
.article-body li { margin-bottom: 8px; }
.article-body strong { color: var(--text); }
.callout {
  background: rgba(247, 147, 26, 0.08); border: 1px solid rgba(247, 147, 26, 0.3);
  border-radius: 10px; padding: 16px 18px; margin: 22px 0; color: #e8d9c4; font-size: 0.95rem;
}
.callout b { color: var(--accent); }
.article-nav { display: flex; justify-content: space-between; max-width: 720px; margin: 0 auto; padding: 0 20px 60px; }
.article-nav a { color: var(--accent-2); text-decoration: none; font-weight: 600; }
.article-nav a:hover { text-decoration: underline; }

/* Mobile */
@media (max-width: 640px) {
  .main-nav {
    display: none; position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; background: var(--bg-alt); padding: 18px 20px;
    border-bottom: 1px solid var(--card-border); gap: 16px;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero { padding: 56px 0 44px; }
  .hero-stats { gap: 24px; }
  .newsletter-form { flex-direction: column; }
  .footer-inner { flex-direction: column; }
}