/* ==========================================================================
   riobetcasino513.top — сайт №4 сети, «эталон-2»
   Фиолет + золото на тёмном. Одноколоночный лонг-рид, answer-first.
   Дизайн намеренно отличен от sfd/best/gamble.
   ========================================================================== */

:root {
  --bg:        #0e0b14;
  --bg-2:      #14101f;
  --surface:   #1a1426;
  --elevated:  #221a33;
  --line:      #2e2542;
  --text:      #ece9f3;
  --muted:     #a39bb8;
  --violet:    #8b5cf6;
  --violet-soft:#a78bfa;
  --violet-deep:#6d28d9;
  --gold:      #f5c518;
  --green:     #34d399;
  --red:       #fb7185;
  --radius:    16px;
  --maxw:      840px;
  --shadow:    0 18px 48px rgba(0,0,0,.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto} *{transition:none!important} }

body {
  margin: 0;
  background:
    radial-gradient(900px 480px at 80% -160px, rgba(139,92,246,.14), transparent 60%),
    radial-gradient(700px 420px at 0% 6%, rgba(245,197,24,.06), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px; line-height: 1.74; -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--violet-soft); text-decoration: none; }
a:hover { color: var(--violet); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }
.skip-link { position:absolute; left:-9999px; top:0; z-index:100; background:var(--violet); color:#fff; padding:10px 16px; font-weight:700; border-radius:0 0 8px 0; }
.skip-link:focus { left:0; }

/* Disclosure */
.disclosure { background: var(--bg-2); border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12.5px; text-align: center; padding: 7px 12px; }
.disclosure b { color: var(--violet-soft); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(14,11,20,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; gap: 14px; padding: 11px 20px; }
.brand { display: flex; align-items: center; gap: 11px; margin-right: auto; }
.brand img { width: 42px; height: 42px; border-radius: 10px; }
.brand b { font-size: 20px; color: #fff; letter-spacing: .3px; }
.brand b span { color: var(--violet-soft); }
.age-badge { display: inline-flex; align-items: center; font-weight: 800; font-size: 12px; color: var(--violet-soft); border: 1.5px solid var(--violet); border-radius: 8px; padding: 4px 8px; }
.nav-main { display: flex; gap: 16px; }
.nav-main a { color: var(--muted); font-size: 14px; }
.nav-main a:hover { color: var(--violet-soft); }

/* Buttons */
.cta { display:inline-block; text-align:center; font-weight:800; letter-spacing:.4px; text-transform:uppercase; color:#fff;
  background: linear-gradient(180deg, var(--violet), var(--violet-deep)); border:1px solid rgba(255,255,255,.16); border-radius:12px;
  padding:15px 28px; font-size:15px; cursor:pointer; box-shadow:0 10px 26px rgba(109,40,217,.4), inset 0 1px 0 rgba(255,255,255,.25);
  transition: transform .15s, box-shadow .15s, filter .15s; }
.cta:hover { transform: translateY(-2px); filter: brightness(1.08); color:#fff; box-shadow:0 14px 32px rgba(109,40,217,.55); }
.cta:active { transform: translateY(0); }
.cta--gold { background: linear-gradient(180deg, #ffd766, var(--gold)); color:#2a1d00; box-shadow:0 10px 26px rgba(245,197,24,.3); }
.cta--gold:hover { color:#2a1d00; }
.cta--sm { padding:9px 16px; font-size:13px; }
.cta-row { text-align:center; margin:26px 0 4px; }
.cta-row .cta { min-width: 300px; max-width:100%; }

/* Hero */
.hero { padding: 42px 0 14px; }
.hero h1 { font-size: clamp(29px,5.2vw,46px); line-height:1.12; margin:0 0 16px; color:#fff; }
.hero h1 span { color: var(--violet-soft); }
.hero .lead { font-size:18px; margin:0 0 20px; }
.hero-figure { margin: 18px 0 6px; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }

/* TL;DR — answer-first box */
.tldr { margin: 8px 0 6px; background: linear-gradient(180deg, rgba(139,92,246,.12), rgba(139,92,246,.04)); border:1px solid rgba(139,92,246,.4); border-radius:var(--radius); padding:18px 20px; }
.tldr h2 { margin:0 0 10px; font-size:15px; text-transform:uppercase; letter-spacing:.6px; color:var(--violet-soft); padding-left:0; }
.tldr h2::before { display:none; }
.tldr ul { list-style:none; margin:0; padding:0; }
.tldr li { position:relative; padding:5px 0 5px 26px; font-size:15.5px; }
.tldr li::before { content:"→"; position:absolute; left:2px; color:var(--violet-soft); font-weight:700; }
.tldr b { color:#fff; }

/* Sections */
main section { padding: 30px 0; border-top: 1px solid var(--line); scroll-margin-top: 88px; }
h2 { font-size: clamp(22px,3.6vw,30px); line-height:1.25; margin:0 0 16px; color:#fff; position:relative; padding-left:18px; }
h2::before { content:""; position:absolute; left:0; top:.12em; bottom:.12em; width:6px; border-radius:4px; background:linear-gradient(180deg,var(--violet-soft),var(--violet-deep)); }
h3 { font-size:20px; color:var(--violet-soft); margin:26px 0 10px; }
p { margin:0 0 16px; }
.section-figure { margin:6px 0 18px; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }

/* Lists */
ul.ticks { list-style:none; padding:0; margin:0 0 18px; }
ul.ticks li { position:relative; padding:7px 0 7px 30px; border-bottom:1px dashed rgba(255,255,255,.07); }
ul.ticks li::before { content:"◆"; position:absolute; left:5px; top:7px; color:var(--violet-soft); font-size:13px; }
ol.steps { margin:0 0 18px; padding-left:22px; }
ol.steps li { padding:6px 0; }
ol.steps li::marker { color:var(--violet-soft); font-weight:700; }

/* «Кому подходит / не очень» */
.fit { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:8px 0 18px; }
.fit > div { border:1px solid var(--line); border-radius:12px; padding:16px 18px; background:var(--surface); }
.fit h4 { margin:0 0 10px; font-size:16px; }
.fit .yes h4 { color:var(--green); }
.fit .no h4 { color:var(--red); }
.fit ul { list-style:none; margin:0; padding:0; }
.fit li { padding:5px 0 5px 24px; position:relative; font-size:15px; }
.fit .yes li::before { content:"✓"; position:absolute; left:3px; color:var(--green); font-weight:800; }
.fit .no li::before { content:"✕"; position:absolute; left:4px; color:var(--red); font-weight:800; }

/* Callout */
.callout { border:1px solid rgba(245,197,24,.35); background:rgba(245,197,24,.06); border-radius:12px; padding:14px 18px; margin:0 0 18px; font-size:15px; }
.callout b { color:var(--gold); }

/* Bonus table */
.table-wrap { overflow-x:auto; margin:6px 0 18px; border-radius:var(--radius); border:1px solid var(--line); }
table.bonuses { width:100%; border-collapse:collapse; min-width:480px; background:var(--surface); }
table.bonuses caption { text-align:left; padding:12px 16px; color:var(--muted); font-size:13.5px; }
table.bonuses thead th { background:linear-gradient(180deg,var(--violet-soft),var(--violet-deep)); color:#fff; text-align:left; font-size:15px; padding:13px 18px; }
table.bonuses td { padding:13px 18px; border-top:1px solid var(--line); vertical-align:top; font-size:15.5px; }
table.bonuses td:first-child { font-weight:700; color:#fff; width:34%; }
table.bonuses tbody tr:nth-child(even) { background:rgba(255,255,255,.02); }

/* FAQ */
.faq details { background:var(--surface); border:1px solid var(--line); border-radius:12px; margin-bottom:12px; overflow:hidden; }
.faq summary { cursor:pointer; list-style:none; padding:16px 48px 16px 18px; position:relative; font-weight:700; color:#fff; font-size:16.5px; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; position:absolute; right:18px; top:50%; transform:translateY(-50%); color:var(--violet-soft); font-size:24px; font-weight:400; }
.faq details[open] summary::after { content:"\2212"; }
.faq details[open] summary { border-bottom:1px solid var(--line); }
.faq .faq-body { padding:14px 18px 4px; }

/* Responsible gambling */
.rg { margin:36px 0 0; padding:22px; border-radius:var(--radius); background:linear-gradient(180deg,rgba(139,92,246,.08),rgba(139,92,246,.02)); border:1px solid rgba(139,92,246,.3); }
.rg h2 { font-size:19px; padding-left:0; margin-bottom:10px; }
.rg h2::before { display:none; }
.rg p { color:var(--muted); font-size:14.5px; margin-bottom:8px; }
.rg .rg-links { display:flex; flex-wrap:wrap; gap:8px 18px; margin-top:8px; font-size:14px; }

/* Byline + sources */
.byline { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin:30px 0 0; padding:16px 18px; background:var(--bg-2); border:1px solid var(--line); border-radius:12px; font-size:14px; color:var(--muted); }
.byline .ava { width:40px; height:40px; border-radius:50%; background:var(--elevated); display:grid; place-items:center; color:var(--violet-soft); font-weight:800; }
.byline b { color:var(--text); }
.sources { margin:16px 0 0; font-size:13px; color:var(--muted); }
.sources b { color:var(--text); }

/* Footer */
.site-footer { border-top:1px solid var(--line); background:#0a0810; padding:34px 0 90px; margin-top:36px; }
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:26px; }
.site-footer img.flogo { width:56px; height:56px; border-radius:12px; margin-bottom:10px; }
.site-footer h4 { color:#fff; font-size:15px; margin:0 0 12px; }
.site-footer p, .site-footer li { color:var(--muted); font-size:13.5px; }
.site-footer ul { list-style:none; padding:0; margin:0; }
.site-footer ul li { padding:4px 0; }
.foot-legal { border-top:1px solid var(--line); margin-top:24px; padding-top:18px; color:var(--muted); font-size:12.5px; text-align:center; }

/* Sticky mobile CTA bar */
.mobile-cta { position:fixed; left:0; right:0; bottom:0; z-index:50; display:none; padding:10px 14px calc(10px + env(safe-area-inset-bottom)); background:rgba(14,11,20,.96); backdrop-filter:blur(8px); border-top:1px solid var(--line); }
.mobile-cta .cta { display:block; width:100%; }

/* Responsive */
@media (max-width: 600px) {
  body { font-size:16px; overflow-x:clip; }
  .nav-main { display:none; }
  .site-header .cta { display:none; } /* на мобайле CTA в шапке лишняя — есть липкая нижняя + в hero */
  .hero { padding-top:28px; }
  .hero h1 { font-size:27px; overflow-wrap:anywhere; }
  h2 { overflow-wrap:anywhere; }
  .cta-row .cta { min-width:0; width:100%; }
  .fit { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:20px; }
  .wrap { padding:0 15px; }
  .site-header .wrap { padding:10px 15px; gap:10px; }
  .mobile-cta { display:block; }
}