/* RUOCrypto — site styles */
:root {
  --bg: #070b14;
  --bg-2: #0b1120;
  --surface: #0f172a;
  --surface-2: #141e35;
  --border: #1f2b47;
  --border-strong: #2c3b60;
  --text: #e8edf7;
  --muted: #8d9ab5;
  --faint: #5d6a86;
  --mint: #2ee6a8;
  --mint-ink: #04241a;
  --blue: #6c8cff;
  --danger: #ff7a7a;
  --ok: #2ee6a8;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --head: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--head); line-height: 1.15; margin: 0 0 0.5em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.mint { color: var(--mint); }
.hidden { display: none !important; }
.nowrap { white-space: nowrap; }
.center-text { text-align: center; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--mint); color: var(--mint-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip-link:focus { left: 8px; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 700px) { .container { padding: 0 28px; } }

/* ---------- header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font: 700 1.2rem var(--head); letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 32px; height: 32px; flex: none; }
.brand b { color: var(--mint); font-weight: 700; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav .btn { color: var(--mint-ink); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border-strong); border-radius: 8px; color: var(--text); padding: 7px 10px; cursor: pointer; }
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--border); padding: 8px 16px 16px;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 4px; border-bottom: 1px solid var(--border); }
  .site-nav .btn { margin-top: 12px; border-bottom: 0; text-align: center; justify-content: center; }
}

/* ---------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
  font: 600 0.98rem var(--body); cursor: pointer; transition: transform .15s ease, background .15s ease, border-color .15s ease;
  text-decoration: none !important; white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--mint); color: var(--mint-ink); }
.btn-primary:hover { background: #5cf0bf; }
.btn-outline { background: transparent; border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--mint); }
.btn-sm { padding: 8px 16px; font-size: 0.9rem; }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.6; cursor: wait; }

/* ---------- hero */
.hero { position: relative; padding: 72px 0 64px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto auto; width: 720px; height: 720px;
  background: radial-gradient(circle, rgba(46, 230, 168, 0.16), transparent 62%); pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: auto auto -50% -20%; width: 680px; height: 680px;
  background: radial-gradient(circle, rgba(108, 140, 255, 0.13), transparent 60%); pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px;
  font: 600 0.78rem var(--body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--mint);
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 40em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 32px; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 560px) { .hero-stats { grid-template-columns: repeat(2, 1fr); } }
.hero-stats div { border-left: 2px solid var(--border-strong); padding-left: 12px; }
.hero-stats strong { display: block; font: 700 1.35rem var(--head); }
.hero-stats span { color: var(--muted); font-size: 0.85rem; }

.flow-card {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border); border-radius: 20px; padding: 24px; box-shadow: var(--shadow);
}
.flow-step { display: flex; align-items: center; gap: 14px; padding: 14px; border-radius: 12px; background: rgba(255,255,255,0.025); border: 1px solid var(--border); }
.flow-step + .flow-arrow { display: flex; justify-content: center; color: var(--faint); padding: 6px 0; }
.flow-icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; flex: none; background: rgba(108,140,255,0.14); color: var(--blue); }
.flow-icon.mint { background: rgba(46,230,168,0.14); color: var(--mint); }
.flow-step strong { display: block; font-size: 0.98rem; }
.flow-step small { color: var(--muted); }
.flow-step .amount { margin-left: auto; font: 700 1.05rem var(--head); }
.flow-step .amount.mint { color: var(--mint); }

/* ---------- sections */
.section { padding: 84px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--muted); font-size: 1.08rem; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); margin: 0; }
.card-icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 16px; background: rgba(46,230,168,0.12); color: var(--mint); }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding: 26px 24px 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font: 700 0.85rem var(--head); color: var(--mint); letter-spacing: 0.1em; display: block; margin-bottom: 12px;
}
.step p { color: var(--muted); margin: 0; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .compare { grid-template-columns: 1fr; } }
.compare ul { list-style: none; margin: 0; padding: 0; }
.compare li { padding: 10px 0 10px 30px; position: relative; border-top: 1px solid var(--border); color: var(--muted); }
.compare li:first-child { border-top: 0; }
.compare .bad li::before { content: "✕"; position: absolute; left: 4px; color: var(--danger); }
.compare .good { border-color: rgba(46,230,168,0.4); }
.compare .good li { color: var(--text); }
.compare .good li::before { content: "✓"; position: absolute; left: 4px; color: var(--mint); font-weight: 700; }

/* ---------- pricing */
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
@media (max-width: 860px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card { background: linear-gradient(170deg, var(--surface-2), var(--surface)); border: 1px solid var(--border-strong); border-radius: 20px; padding: 30px; }
.price-row { display: flex; align-items: baseline; gap: 12px; padding-bottom: 14px; }
.price-row .value { font: 700 3rem var(--head); letter-spacing: -0.03em; }
.price-row .value.mint { color: var(--mint); }
.price-row .unit { color: var(--muted); line-height: 1.25; }
.price-plus { color: var(--faint); font: 600 1.4rem var(--head); padding: 0 0 10px; }
.check-list { list-style: none; padding: 0; margin: 18px 0 24px; }
.check-list li { padding: 7px 0 7px 28px; position: relative; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 2px; color: var(--mint); font-weight: 700; }
.check-list li strong { color: var(--text); }

.calc { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 30px; }
.calc label { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 12px; }
.calc output { font: 700 1.2rem var(--head); color: var(--mint); }
.calc input[type="range"] { width: 100%; accent-color: var(--mint); margin-bottom: 18px; }
.calc-rows div { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px solid var(--border); color: var(--muted); }
.calc-rows div strong { color: var(--text); }
.calc-rows .total strong { color: var(--mint); font-size: 1.1rem; }
.fine-print { font-size: 0.82rem; color: var(--faint); margin-top: 12px; }

/* ---------- partner band */
.partner-band { display: grid; grid-template-columns: auto 1fr auto; gap: 22px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 26px 28px; }
@media (max-width: 760px) { .partner-band { grid-template-columns: 1fr; } }
.partner-band h3 { margin: 0 0 4px; }
.partner-band p { margin: 0; color: var(--muted); }
.partner-badge { width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center; background: rgba(108,140,255,0.14); color: var(--blue); }

/* ---------- FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font: 600 1.05rem var(--head); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 1.5rem; color: var(--mint); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 12px; }

.cta-band { text-align: center; padding: 56px 24px; border-radius: 24px; border: 1px solid var(--border-strong);
  background: radial-gradient(circle at 20% 0%, rgba(46,230,168,0.16), transparent 50%), radial-gradient(circle at 90% 100%, rgba(108,140,255,0.16), transparent 50%), var(--surface); }
.cta-band p { color: var(--muted); max-width: 600px; margin: 0 auto 26px; }
.cta-band .hero-actions { justify-content: center; margin: 0; }

/* ---------- footer */
.site-footer { border-top: 1px solid var(--border); padding: 44px 0 30px; margin-top: 40px; color: var(--muted); font-size: 0.9rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: flex-start; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.footer-links a { color: var(--muted); }
.footer-note { margin-top: 26px; font-size: 0.8rem; color: var(--faint); max-width: 900px; }

/* ---------- page header (inner pages) */
.page-head { padding: 54px 0 26px; }
.page-head p { color: var(--muted); font-size: 1.08rem; max-width: 46em; }

/* ---------- forms */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--radius-sm);
  background: var(--bg-2); border: 1px solid var(--border-strong); color: var(--text); font: inherit;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--mint); box-shadow: 0 0 0 3px rgba(46,230,168,0.18); }
.field input[aria-invalid="true"], .field select[aria-invalid="true"] { border-color: var(--danger); }
.field small { color: var(--faint); font-size: 0.8rem; }
.check { display: flex; gap: 10px; align-items: flex-start; color: var(--muted); font-size: 0.9rem; }
.check input { margin-top: 4px; accent-color: var(--mint); }
.form-message { margin-top: 14px; font-size: 0.95rem; }
.form-message:empty { display: none; }
.form-message.error { color: var(--danger); }
.form-message.success { color: var(--mint); }

.two-col { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 24px; align-items: start; padding-bottom: 40px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.side-list { list-style: none; margin: 0; padding: 0; }
.side-list li { display: flex; justify-content: space-between; gap: 12px; padding: 11px 0; border-top: 1px solid var(--border); color: var(--muted); }
.side-list li:first-child { border-top: 0; }
.side-list strong { color: var(--text); text-align: right; }

/* ---------- calendar */
.scheduler { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; align-items: start; padding-bottom: 40px; }
@media (max-width: 900px) { .scheduler { grid-template-columns: 1fr; } }
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.cal-head h2 { font-size: 1.25rem; margin: 0; }
.cal-nav { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border-strong); background: transparent; color: var(--text); cursor: pointer; font-size: 1.1rem; }
.cal-nav:disabled { opacity: 0.3; cursor: default; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-dow { text-align: center; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); padding: 4px 0; }
.cal-day { aspect-ratio: 1; border-radius: 10px; border: 1px solid transparent; background: transparent; color: var(--faint); font: 600 0.95rem var(--body); }
.cal-day.available { background: var(--surface-2); border-color: var(--border-strong); color: var(--text); cursor: pointer; }
.cal-day.available:hover { border-color: var(--mint); }
.cal-day.today { box-shadow: inset 0 -2px 0 var(--blue); }
.cal-day.selected { background: var(--mint); color: var(--mint-ink); border-color: var(--mint); }
.tz-note { font-size: 0.85rem; color: var(--faint); margin-top: 14px; }
.slots-heading { font-weight: 600; margin: 22px 0 10px; }
.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px; }
.slot { padding: 10px 6px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--bg-2); color: var(--text); font: 600 0.9rem var(--body); cursor: pointer; }
.slot:hover { border-color: var(--mint); }
.slot.selected { background: var(--mint); color: var(--mint-ink); border-color: var(--mint); }
.selected-slot { padding: 12px 14px; border-radius: 10px; background: rgba(46,230,168,0.1); border: 1px solid rgba(46,230,168,0.35); color: var(--mint); font-weight: 600; margin-bottom: 18px; }
.selected-slot.empty { background: var(--bg-2); border-color: var(--border); color: var(--faint); font-weight: 500; }
.empty-state { color: var(--faint); }
.confirmation { text-align: center; padding: 48px 24px; max-width: 640px; margin: 0 auto 40px; }
.confirmation .big-check { width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 18px; display: grid; place-items: center; background: rgba(46,230,168,0.14); color: var(--mint); font-size: 1.8rem; }

/* ---------- payment */
#payment-element { margin: 18px 0; }
.secure-note { display: flex; gap: 8px; align-items: center; font-size: 0.85rem; color: var(--faint); margin-top: 12px; }

/* ---------- demo checkout */
.checkout-steps { display: flex; gap: 22px; list-style: none; padding: 0; margin: 0 0 24px; color: var(--faint); font-size: 0.9rem; flex-wrap: wrap; }
.checkout-steps span { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--border-strong); margin-right: 6px; font-size: 0.8rem; }
.checkout-steps .done { color: var(--muted); }
.checkout-steps .done span { background: var(--surface-2); }
.checkout-steps .current { color: var(--mint); }
.checkout-steps .current span { background: var(--mint); color: var(--mint-ink); border-color: var(--mint); }
.checkout-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 22px; align-items: start; }
@media (max-width: 900px) { .checkout-grid { grid-template-columns: 1fr; } }
.checkout-main { display: grid; gap: 18px; }
.checkout-side { display: grid; gap: 18px; }
.panel h2 { font-size: 1.15rem; }
.cart-item { display: grid; grid-template-columns: 64px 1fr auto; gap: 14px; align-items: center; }
.cart-thumb { width: 64px; height: 64px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); display: grid; place-items: center; }
.vial { width: 18px; height: 38px; border-radius: 4px 4px 7px 7px; background: linear-gradient(180deg, var(--blue) 0 22%, rgba(232,237,247,0.85) 22% 100%); }
.cart-item small { display: block; color: var(--faint); }
.ruo-tag { color: var(--mint) !important; }
.cart-price { font: 700 1.1rem var(--head); }
.ship-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; color: var(--muted); }
@media (max-width: 560px) { .ship-grid { grid-template-columns: 1fr; } }
.ship-grid address { font-style: normal; }
.ship-label { display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); margin-bottom: 4px; }
.pay-method { display: flex; gap: 12px; align-items: center; padding: 14px; border-radius: 12px; border: 1px solid var(--mint); background: rgba(46,230,168,0.06); }
.pay-method small { display: block; color: var(--muted); }
.radio-dot { width: 18px; height: 18px; border-radius: 50%; border: 5px solid var(--mint); flex: none; }
.pay-warning { display: flex; gap: 10px; font-size: 0.85rem; color: #ffcf7a; background: rgba(255,207,122,0.07); border: 1px solid rgba(255,207,122,0.3); border-radius: 10px; padding: 12px; margin: 14px 0 0; }
.pay-warning svg { flex: none; margin-top: 2px; }
.merchant-view .side-list .total strong { color: var(--mint); }

/* ---------- legal pages */
.legal { max-width: 820px; padding-bottom: 40px; }
.legal h2 { font-size: 1.35rem; margin-top: 2em; }
.legal p, .legal li { color: var(--muted); }
.legal li { margin-bottom: 0.5em; }
.legal strong { color: var(--text); }
.callout { padding: 18px 20px; border-radius: 12px; background: rgba(46,230,168,0.07); border: 1px solid rgba(46,230,168,0.3); color: var(--text); }
.callout p { color: var(--text); margin: 0; }