/* ===== oldmanrukus.com — dark cyber-tech ===== */
:root{
  --bg:#06080d;
  --bg2:#0a0e16;
  --panel:#0d1320;
  --panel2:#111a2b;
  --line:#1c2740;
  --txt:#c9d6e8;
  --txt-dim:#7e8ba6;
  --cyan:#22d3ee;
  --green:#39ff9e;
  --magenta:#b16bff;
  --amber:#ffcb6b;
  --glow:0 0 24px rgba(34,211,238,.35);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --sidebar:288px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:var(--sans);
  color:var(--txt);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(34,211,238,.08), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(177,107,255,.08), transparent 60%),
    var(--bg);
  overflow:hidden;
}
/* animated grid backdrop */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(34,211,238,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.05) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 60% 40%,#000,transparent 85%);
  animation:gridpan 40s linear infinite;
}
@keyframes gridpan{from{background-position:0 0}to{background-position:46px 46px}}

a{color:var(--cyan);text-decoration:none}
::selection{background:rgba(34,211,238,.35);color:#fff}

/* ===== Layout ===== */
.layout{position:relative;z-index:1;display:flex;height:100vh}

/* ===== Sidebar ===== */
.sidebar{
  width:var(--sidebar);flex:0 0 var(--sidebar);height:100vh;
  background:linear-gradient(180deg,var(--panel),#080c14);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 20px;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.brand .avatar{
  width:50px;height:50px;border-radius:12px;flex:0 0 50px;
  display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:20px;
  color:#04121a;background:linear-gradient(135deg,var(--cyan),var(--green));
  box-shadow:var(--glow);
}
.brand .who{line-height:1.15}
.brand .who h1{font-size:17px;margin:0;letter-spacing:.5px}
.brand .who span{font-size:11px;color:var(--cyan);font-family:var(--mono);text-transform:uppercase;letter-spacing:2px}
.tagline{font-size:12px;color:var(--txt-dim);margin:14px 2px 22px;line-height:1.5;font-family:var(--mono)}
.tagline .blink{color:var(--green);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.nav{display:flex;flex-direction:column;gap:4px;margin-top:4px}
.nav .nav-label{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--txt-dim);margin:16px 8px 6px;font-family:var(--mono)}
.nav a{
  display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;
  color:var(--txt);font-size:14px;font-weight:500;border:1px solid transparent;
  transition:.18s;position:relative;
}
.nav a .ix{font-family:var(--mono);font-size:11px;color:var(--txt-dim);width:22px}
.nav a .dot{width:7px;height:7px;border-radius:50%;background:var(--line);transition:.18s;margin-left:auto}
.nav a:hover{background:var(--panel2);border-color:var(--line);color:#fff}
.nav a:hover .dot{background:var(--cyan)}
.nav a.active{
  background:linear-gradient(90deg,rgba(34,211,238,.14),transparent);
  border-color:rgba(34,211,238,.4);color:#fff;
}
.nav a.active .dot{background:var(--cyan);box-shadow:var(--glow)}
.nav a.active .ix{color:var(--cyan)}
.nav a.cta{margin-top:6px;background:linear-gradient(135deg,rgba(57,255,158,.16),rgba(34,211,238,.12));border-color:rgba(57,255,158,.4)}
.nav a.cta:hover{box-shadow:0 0 22px rgba(57,255,158,.25)}

.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:11px;color:var(--txt-dim);font-family:var(--mono);line-height:1.7}
.side-foot .pill{display:inline-block;color:var(--green);border:1px solid rgba(57,255,158,.3);border-radius:20px;padding:2px 9px;margin-top:8px}

/* ===== Main / slides ===== */
.main{flex:1;height:100vh;overflow:hidden;position:relative}
.topbar{
  height:54px;display:flex;align-items:center;gap:14px;padding:0 30px;
  border-bottom:1px solid var(--line);background:rgba(8,12,20,.6);backdrop-filter:blur(8px);
  font-family:var(--mono);font-size:12px;color:var(--txt-dim);
}
.topbar .crumb{color:var(--cyan)}
.topbar .menu-toggle{display:none;background:none;border:1px solid var(--line);color:var(--txt);border-radius:8px;padding:5px 10px;cursor:pointer}
.topbar .live{margin-left:auto;display:flex;align-items:center;gap:8px}
.topbar .live .led{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.stage{position:absolute;top:54px;left:0;right:0;bottom:0;overflow:hidden}
.slide{
  position:absolute;inset:0;overflow-y:auto;padding:48px 56px 90px;
  opacity:0;visibility:hidden;transform:translateY(28px) scale(.985);
  transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.2,1);
}
.slide.active{opacity:1;visibility:visible;transform:none;z-index:2}
.slide.leaving{opacity:0;visibility:visible;transform:translateY(-22px) scale(.985);z-index:1}
.wrap{max-width:980px;margin:0 auto}

.kicker{font-family:var(--mono);font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--cyan);margin-bottom:14px;display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:30px;height:1px;background:var(--cyan);box-shadow:var(--glow)}
h2.title{font-size:clamp(28px,4vw,46px);line-height:1.08;margin:0 0 10px;letter-spacing:-.5px}
h2.title .accent{background:linear-gradient(120deg,var(--cyan),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--txt-dim);max-width:760px;line-height:1.6;margin:0 0 30px}

p{line-height:1.72;color:var(--txt)}
.section-block{margin:34px 0}
.section-block h3{font-size:20px;margin:0 0 10px;color:#fff;display:flex;align-items:center;gap:10px}
.section-block h3 .num{font-family:var(--mono);font-size:13px;color:var(--green);border:1px solid rgba(57,255,158,.3);border-radius:7px;padding:2px 8px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin:26px 0}
.card{
  background:linear-gradient(160deg,var(--panel),var(--bg2));
  border:1px solid var(--line);border-radius:16px;padding:22px;position:relative;overflow:hidden;
  transition:.25s;
}
.card::after{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);opacity:.6}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);box-shadow:0 14px 40px rgba(0,0,0,.5)}
.card .ic{font-size:24px;margin-bottom:12px}
.card h4{margin:0 0 8px;font-size:16px;color:#fff}
.card p{margin:0;font-size:14px;color:var(--txt-dim);line-height:1.6}

.tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.tag{font-family:var(--mono);font-size:12px;color:var(--cyan);border:1px solid rgba(34,211,238,.3);border-radius:20px;padding:4px 12px;background:rgba(34,211,238,.05)}
.tag.g{color:var(--green);border-color:rgba(57,255,158,.3);background:rgba(57,255,158,.05)}
.tag.m{color:var(--magenta);border-color:rgba(177,107,255,.3);background:rgba(177,107,255,.05)}

.stat-row{display:flex;flex-wrap:wrap;gap:30px;margin:26px 0}
.stat .n{font-family:var(--mono);font-size:34px;color:var(--cyan);line-height:1}
.stat .l{font-size:12px;color:var(--txt-dim);text-transform:uppercase;letter-spacing:1.5px;margin-top:6px}

.timeline{border-left:2px solid var(--line);margin:24px 0;padding-left:26px}
.timeline .ev{position:relative;margin-bottom:26px}
.timeline .ev::before{content:"";position:absolute;left:-33px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--cyan);box-shadow:var(--glow)}
.timeline .ev h4{margin:0 0 4px;color:#fff;font-size:16px}
.timeline .ev .when{font-family:var(--mono);font-size:12px;color:var(--green)}

/* hero */
.hero{display:flex;flex-direction:column;justify-content:center;min-height:calc(100vh - 200px)}
.hero h2{font-size:clamp(36px,6vw,72px);line-height:1.02;margin:0 0 18px;letter-spacing:-1px}
.hero .sub{font-size:20px;color:var(--txt-dim);max-width:680px;line-height:1.55}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border-radius:11px;cursor:pointer;
  font-weight:600;font-size:15px;border:1px solid var(--line);background:var(--panel2);color:#fff;transition:.2s;font-family:inherit;
}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:linear-gradient(135deg,var(--cyan),var(--green));color:#04121a;border:none;box-shadow:var(--glow)}
.btn.primary:hover{box-shadow:0 0 34px rgba(34,211,238,.5)}
.btn.ghost:hover{border-color:var(--cyan)}

/* ===== Vending machine ===== */
.vm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0}
.price{
  background:linear-gradient(160deg,var(--panel),var(--bg2));border:1px solid var(--line);
  border-radius:16px;padding:22px;position:relative;transition:.25s;
}
.price:hover{transform:translateY(-4px);border-color:rgba(57,255,158,.4)}
.price .cat{font-family:var(--mono);font-size:12px;color:var(--cyan);letter-spacing:1px;text-transform:uppercase}
.price .amt{font-size:38px;font-weight:700;margin:8px 0;color:#fff}
.price .amt small{font-size:15px;color:var(--txt-dim);font-weight:500}
.price .eta{font-family:var(--mono);font-size:12px;color:var(--green);margin-bottom:10px}
.price .desc{font-size:13px;color:var(--txt-dim);line-height:1.55}
.price.addon{border-style:dashed}
.price.addon .amt{color:var(--amber)}

.notice{border:1px solid rgba(255,203,107,.35);background:rgba(255,203,107,.06);border-radius:14px;padding:18px 20px;margin:22px 0;font-size:14px;line-height:1.65}
.notice b{color:var(--amber)}
.legal{font-size:13px;color:var(--txt-dim);line-height:1.7;border-top:1px solid var(--line);margin-top:26px;padding-top:18px}

/* chat */
.chat{
  display:flex;flex-direction:column;height:560px;max-height:72vh;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  background:linear-gradient(180deg,var(--panel),#070b12);box-shadow:0 14px 50px rgba(0,0,0,.5);
}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--panel2)}
.chat-head .led{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:pulse 1.6s infinite}
.chat-head h4{margin:0;font-size:14px}
.chat-head span{font-family:var(--mono);font-size:11px;color:var(--txt-dim);margin-left:auto}
.chat-log{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px}
.msg{max-width:82%;padding:12px 15px;border-radius:14px;font-size:14px;line-height:1.6;white-space:pre-wrap;word-wrap:break-word}
.msg.bot{align-self:flex-start;background:var(--panel2);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.me{align-self:flex-end;background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(57,255,158,.12));border:1px solid rgba(34,211,238,.35);border-bottom-right-radius:4px;color:#fff}
.msg.typing{color:var(--txt-dim);font-family:var(--mono)}
.chat-input{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:var(--panel2)}
.chat-input input{flex:1;background:var(--bg);border:1px solid var(--line);color:var(--txt);border-radius:10px;padding:12px 14px;font-size:14px;font-family:inherit}
.chat-input input:focus{outline:none;border-color:var(--cyan);box-shadow:var(--glow)}
.chat-input button{background:linear-gradient(135deg,var(--cyan),var(--green));color:#04121a;border:none;border-radius:10px;padding:0 20px;font-weight:700;cursor:pointer;font-family:inherit}
.chat-input button:disabled{opacity:.5;cursor:not-allowed}

/* finalize / checkout panel */
.checkout{display:none;margin-top:24px;border:1px solid rgba(57,255,158,.4);border-radius:18px;padding:24px;background:linear-gradient(160deg,rgba(57,255,158,.06),var(--bg2))}
.checkout.show{display:block;animation:fadein .5s ease}
@keyframes fadein{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.checkout h3{margin:0 0 6px;color:#fff}
.quote{display:flex;align-items:baseline;gap:14px;margin:10px 0 4px}
.quote .total{font-size:40px;font-weight:700;color:var(--green);font-family:var(--mono)}
.quote .bd{font-size:13px;color:var(--txt-dim)}
.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.pay{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--panel)}
.pay .lab{font-family:var(--mono);font-size:11px;color:var(--cyan);text-transform:uppercase;letter-spacing:1px}
.pay .val{font-size:20px;font-weight:700;color:#fff;margin-top:6px;user-select:all}
.uploader{margin-top:18px}
.uploader label{display:block;font-size:13px;color:var(--txt-dim);margin-bottom:8px}
.drop{border:1.5px dashed var(--line);border-radius:12px;padding:22px;text-align:center;color:var(--txt-dim);cursor:pointer;transition:.2s;font-size:14px}
.drop:hover{border-color:var(--cyan);color:var(--cyan)}
.filelist{font-family:var(--mono);font-size:12px;color:var(--green);margin-top:10px}
.prompt-box{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:16px;font-family:var(--mono);font-size:12.5px;color:var(--txt-dim);white-space:pre-wrap;max-height:220px;overflow:auto;margin-top:14px}
.ok-banner{display:none;margin-top:16px;padding:14px 18px;border-radius:12px;background:rgba(57,255,158,.1);border:1px solid rgba(57,255,158,.4);color:var(--green);font-size:14px}
.ok-banner.show{display:block}

/* scrollbars */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:#28365a}

/* mobile */
.backdrop{display:none}
@media(max-width:880px){
  .sidebar{position:fixed;z-index:50;transform:translateX(-100%);transition:transform .3s;box-shadow:0 0 60px rgba(0,0,0,.7)}
  .sidebar.open{transform:none}
  .topbar .menu-toggle{display:inline-block}
  .slide{padding:30px 22px 80px}
  .backdrop.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:40}
  .pay-methods{grid-template-columns:1fr}
}