/* =========================================================================
   BLOCKCHAIN PAGE FIXES – responsive simulator + demos
   ========================================================================= */

:root{
  --bc-bg: linear-gradient(145deg, rgba(14,24,44,.96), rgba(6,14,28,.98));
  --bc-surface: rgba(6,12,24,.88);
  --bc-border: rgba(94,142,210,.25);
  --bc-glow: rgba(75,182,255,.55);
  --bc-primary: #4bb6ff;
  --bc-muted: #a8b3cf;
  --bc-text: #f4f6ff;
  --bc-radius-lg: 22px;
  --bc-radius-sm: 12px;
}

/* hero layout */
.page-hero--blockchain .container{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:42px;
  align-items:center;
}
.hero-eyebrow{ 
  display:inline-flex; gap:8px; padding:6px 14px; border-radius:999px;
  font:600 12px/1.1 system-ui,sans-serif; letter-spacing:.12em; text-transform:uppercase;
  color:var(--bc-primary); background:rgba(75,182,255,.12); border:1px solid var(--bc-border);
}
.page-hero--blockchain h1{ font-size: clamp(2.2rem, 4.2vw, 3.6rem); line-height:1.08; margin:8px 0 12px;}
.page-hero--blockchain p{ color:var(--bc-muted); max-width:560px; }
.page-hero--blockchain .hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top:8px; }

/* simulator card */
.bc-sim{
  position:relative; border:1px solid var(--bc-border); border-radius:24px;
  background:var(--bc-bg); box-shadow:0 30px 80px -50px rgba(8,14,28,.9);
  padding:18px; overflow:hidden;
  min-height:520px;
}
.bc-sim__meta{
  position:absolute; top:12px; right:16px; font:12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  color:var(--bc-muted);
}
.bc-sim__controls{ display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
.bc-button{
  padding:8px 14px; border-radius:999px; border:1px solid var(--bc-border); background:var(--bc-surface);
  color:var(--bc-text); font-weight:700; font-size:13px; cursor:pointer;
  transition:.2s ease; box-shadow:0 10px 24px -18px rgba(75,182,255,.6);
}
.bc-button.primary{ background:linear-gradient(135deg,#4bb6ff,#6a6cff); color:#041023; border-color:transparent; }
.bc-button:hover{ transform:translateY(-1px); border-color:var(--bc-glow); }
.bc-slider{ accent-color:#6aa6ff; }
.bc-select{ background:var(--bc-surface); color:var(--bc-text); border:1px solid var(--bc-border); border-radius:8px; padding:6px 10px; }

.bc-steps{ display:grid; grid-auto-flow:column; grid-auto-columns:1fr; gap:12px; margin:14px 0; overflow-x:auto; padding-bottom:6px; }
.bc-step{
  min-width:180px; padding:12px; border:1px dashed rgba(124,150,199,.35);
  border-radius:14px; background:rgba(6,12,24,.6); color:var(--bc-muted);
}
.bc-step strong{ display:block; color:var(--bc-text); margin-bottom:6px; }
.bc-step .k{ display:inline-grid; place-items:center; width:22px; height:22px; border-radius:999px; border:1px solid var(--bc-border); margin-right:8px; }

.bc-viewport{
  position:relative; border-radius:16px; border:1px solid var(--bc-border); background:rgba(6,12,24,.7);
  height:360px; overflow:auto; padding:14px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
}
.bc-block{
  background:rgba(6,14,28,.82); border:1px solid var(--bc-border); border-radius:12px; padding:10px 12px; 
  margin-bottom:10px; font:12px/1.35 ui-monospace, SFMono-Regular, Menlo, monospace; color:var(--bc-text);
  animation: bc-in .35s ease-out;
}
.bc-block.mining{ border-color:rgba(255,193,7,.6); background:rgba(255,193,7,.06); }
.bc-block .h{ color:#7ed6ff; font-weight:700; }
.bc-block .muted{ color:var(--bc-muted); }
.bc-connector{ height:16px; display:flex; justify-content:center; align-items:center; }
.bc-connector .pulse{ width:2px; height:100%; background:linear-gradient(180deg,transparent,rgba(75,182,255,.6),transparent); animation: bc-flow 1.8s ease-in-out infinite; }

@keyframes bc-in{ from{opacity:0; transform:translateX(-10px)} to{opacity:1; transform:none} }
@keyframes bc-flow{ 0%{opacity:0; transform:translateY(-8px)} 50%{opacity:1} 100%{opacity:0; transform:translateY(8px)} }

/* Section: Revolution + Tabs & Demos */
.section-blockchain-demos{ margin-top: 40px; }
.section-blockchain-demos .section-title{ margin: 0 0 8px; }
.tabs{
  display:flex; gap:14px; flex-wrap:wrap; margin: 14px 0 18px; overflow:auto; padding-bottom:6px;
}
.tab-btn{
  padding:10px 18px; border-radius:999px; border:1px solid var(--bc-border); background:rgba(6,12,24,.65);
  color:var(--bc-text); cursor:pointer; font-weight:700;
}
.tab-btn.active{ background:linear-gradient(135deg,#4bb6ff,#6a6cff); border-color:transparent; color:#041023; }
.tab-panels{ position:relative; }
.tab-panel{ display:none; }
.tab-panel.active{ display:block; }

.demo-card{
  border:1px solid var(--bc-border); border-radius:24px; background:var(--bc-bg); padding:22px; 
  box-shadow:0 34px 70px -54px rgba(8,14,28,.9);
}
.demo-grid{ display:grid; grid-template-columns: minmax(0,1.1fr) minmax(0,.9fr); gap:22px; align-items:start; }
.audit-box{
  border:1px solid var(--bc-border); border-radius:16px; padding:16px; background:rgba(6,12,24,.6);
  font:14px/1.4 ui-monospace, Menlo, monospace; color:var(--bc-text);
}
.audit-box .title{ font-weight:800; margin-bottom:6px; }
.kpi{ display:flex; gap:28px; margin-top:6px; color:var(--bc-muted); }
.kpi b{ color:var(--bc-text) }

.form-controls{ display:flex; gap:12px; flex-wrap:wrap; margin-top:10px; }
.form-controls .btn{ all:unset; }
.form-controls .btn{ padding:10px 16px; border-radius:10px; background:linear-gradient(135deg,#4bb6ff,#6a6cff); color:#041023; font-weight:800; cursor:pointer; }
.form-controls .btn.secondary{ background:rgba(6,12,24,.65); color:var(--bc-text); border:1px solid var(--bc-border); }

/* RESPONSIVE */
@media (max-width: 1024px){
  .page-hero--blockchain .container{ grid-template-columns:1fr; }
  .bc-sim{ min-height: 500px; }
  .demo-grid{ grid-template-columns:1fr; }
}
@media (max-width:640px){
  .bc-viewport{ height:300px; }
  .bc-step{ min-width:160px; }
  .page-hero--blockchain h1{ font-size: clamp(2rem, 7vw, 2.6rem); }
}