/* Affiliate Shop — dark luxury: nền đen + vàng kim, mobile-first, chữ to rõ */
:root{
  --primary:#d4af37; --primary-dark:#b8912a; --accent:#f5d76e;
  --bg:#0c0c0c; --card:#161616; --text:#f2ede0; --muted:#a89f8d;
  --border:#2b2b2b; --danger:#f87171; --ok:#34d399; --radius:14px;
  --gold-metal:linear-gradient(135deg,#bf953f,#fcf6ba 25%,#d4af37 50%,#fbf5b7 75%,#aa771c);
}
/* hiệu ứng vàng kim lấp lánh */
@keyframes shimmer{0%{background-position:-200% center}100%{background-position:200% center}}
@keyframes sweep{0%{left:-80%}55%,100%{left:130%}}
@keyframes twinkle{0%,100%{opacity:.25;transform:scale(.8)}50%{opacity:1;transform:scale(1.15)}}
.shimmer-gold{
  background:linear-gradient(90deg,#b8912a 15%,#fff8dc 38%,#f5d76e 50%,#fff8dc 62%,#b8912a 85%);
  background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shimmer 3.2s linear infinite;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);font-size:17px;line-height:1.6}
a{color:var(--primary);text-decoration:none}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
/* header */
header.top{background:#000;color:var(--primary);position:sticky;top:0;z-index:50;border-bottom:1px solid #3a2f14}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;max-width:960px;margin:0 auto}
.brand{font-weight:800;font-size:20px;color:var(--primary)}
nav.main{display:flex;gap:4px;overflow-x:auto;padding:0 8px 10px;max-width:960px;margin:0 auto}
nav.main a{color:#cbbf9a;padding:8px 12px;border-radius:10px;white-space:nowrap;font-size:16px}
nav.main a:hover,nav.main a.on{background:rgba(212,175,55,.15);color:var(--accent)}
/* hero */
.hero{background:linear-gradient(135deg,#1a1405,#0c0c0c 60%,#1a1405);color:var(--accent);padding:40px 16px;text-align:center;border-bottom:1px solid #3a2f14}
.hero h1{margin:0 0 10px;font-size:30px;line-height:1.3;
  background:linear-gradient(90deg,#b8912a 15%,#fff8dc 38%,#f5d76e 50%,#fff8dc 62%,#b8912a 85%);
  background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shimmer 3.2s linear infinite}
.hero p{margin:0 0 20px;font-size:18px;opacity:.9}
.hero .price-big{font-size:44px;font-weight:800;margin:6px 0;
  background:linear-gradient(90deg,#b8912a 15%,#fffbe8 38%,#ffe45e 50%,#fffbe8 62%,#b8912a 85%);
  background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shimmer 2.6s linear infinite;filter:drop-shadow(0 2px 14px rgba(245,215,110,.4))}
.hero .price-old{opacity:.6;text-decoration:line-through;font-size:18px}
/* buttons */
.btn{display:inline-block;background:linear-gradient(135deg,#e8c547,#b8912a);color:#1a1405;font-weight:800;border:none;border-radius:12px;
  padding:14px 26px;font-size:18px;cursor:pointer;text-align:center;position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;top:0;left:-80%;width:45%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);animation:sweep 3.5s ease-in-out infinite;pointer-events:none}
.btn:hover{filter:brightness(1.08)}
.btn.primary{background:linear-gradient(135deg,#e8c547,#b8912a);color:#1a1405}
.btn.ghost{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn.small{padding:9px 16px;font-size:16px}
.btn.block{display:block;width:100%}
.btn.danger{background:#7f1d1d;color:#fecaca}
/* cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:16px 0;box-shadow:0 2px 12px rgba(0,0,0,.5)}
.card h2{margin-top:0;font-size:22px;
  background:linear-gradient(90deg,#b8912a 15%,#fff8dc 38%,#f5d76e 50%,#fff8dc 62%,#b8912a 85%);
  background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shimmer 4s linear infinite}
.grid{display:grid;gap:14px}
@media(min-width:640px){.grid.cols2{grid-template-columns:1fr 1fr}}
.tier{display:flex;align-items:center;gap:14px;background:#1d1808;border:1px solid #4a3d15;border-radius:12px;padding:14px}
.tier .n{background:var(--gold-metal);color:#1a1405;font-weight:800;border-radius:50%;width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none;box-shadow:0 2px 10px rgba(212,175,55,.35)}
.tier .amt{margin-left:auto;font-weight:800;font-size:22px;color:var(--accent)}
.kv{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px dashed var(--border);font-size:17px}
.kv:last-child{border-bottom:none}
.kv b{color:var(--accent)}
.wallet{background:linear-gradient(135deg,#2a2108,#0c0c0c);border:1px solid #4a3d15;color:var(--accent);border-radius:var(--radius);padding:22px;margin:16px 0}
.wallet .bal{font-size:40px;font-weight:800;margin:4px 0;color:#fff}
.wallet .sub{opacity:.8;font-size:15px}
.note{background:#1d1808;border:1px solid #4a3d15;border-radius:12px;padding:14px 16px;margin:14px 0;font-size:16px;color:#e8dfc0}
.alert{border-radius:12px;padding:14px 16px;margin:14px 0;font-size:16px}
.alert.ok{background:#0d2018;border:1px solid #14532d;color:#a7f3d0}
.alert.err{background:#2a0d0d;border:1px solid #7f1d1d;color:#fca5a5}
/* forms */
label{display:block;font-weight:600;margin:14px 0 6px;font-size:17px;color:#e8dfc0}
input,select,textarea{width:100%;padding:14px;font-size:17px;border:1.5px solid var(--border);border-radius:12px;background:#0f0f0f;color:var(--text);font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(212,175,55,.18)}
textarea{min-height:110px;resize:vertical}
.hint{color:var(--muted);font-size:15px;margin-top:6px}
table{width:100%;border-collapse:collapse;font-size:15px;background:var(--card)}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border);vertical-align:top}
th{background:#1d1808;color:var(--accent)}
.tblwrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px;margin:14px 0}
.badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:14px;font-weight:700}
.badge.pending{background:#3a2f10;color:#fcd34d}
.badge.activated,.badge.ok{background:#0d2b1a;color:#6ee7b7}
.badge.cancelled,.badge.rejected{background:#3a1212;color:#fca5a5}
.badge.approved{background:#0d2b1a;color:#6ee7b7}
.code{font-family:ui-monospace,Menlo,monospace;background:#1d1808;border:1.5px dashed var(--primary);border-radius:10px;padding:10px 16px;font-size:22px;font-weight:800;letter-spacing:2px;color:var(--accent);display:inline-block}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 16px 16px 64px;position:relative;margin:12px 0}
.steps li::before{content:counter(s);position:absolute;left:14px;top:14px;background:var(--gold-metal);color:#1a1405;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;box-shadow:0 2px 10px rgba(212,175,55,.35)}
footer{margin-top:40px;background:#000;color:#8a8272;padding:28px 16px;font-size:15px;border-top:1px solid #3a2f14}
footer .wrap{display:flex;flex-direction:column;gap:6px}
.adminbar{background:#000;color:#cbbf9a;padding:10px 16px;font-size:15px;border-bottom:1px solid #3a2f14;position:sticky;top:0;z-index:10000}
.adminbar .wrap{display:flex;gap:14px;overflow-x:auto;align-items:center}
.adminbar a{color:#cbbf9a;white-space:nowrap}
.adminbar a:hover{color:var(--accent)}
.stat{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center}
.stat .v{font-size:28px;font-weight:800;color:var(--accent)}
.stat .l{color:var(--muted);font-size:15px}
details.faq{background:var(--card);border:1px solid var(--border);border-radius:12px;margin:10px 0;padding:0}
details.faq summary{padding:16px;font-weight:700;cursor:pointer;font-size:17px;list-style:none;color:#e8dfc0}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::before{content:"+ ";color:var(--primary);font-weight:800}
details.faq[open] summary::before{content:"− "}
details.faq .a{padding:0 16px 16px;color:var(--text)}
.example{background:#1d1808;border-radius:12px;padding:16px;margin:12px 0;font-size:16px}
.example b{color:var(--accent)}

/* ===== Nút ĐẶT MUA ruby đỏ lấp lánh — ba Phương chốt 2026-10-14 ===== */
.btn-ruby{
  background:linear-gradient(135deg,#6d0a16 0%,#9B111E 28%,#d21f3c 50%,#9B111E 72%,#6d0a16 100%);
  background-size:220% auto;
  color:#fff !important;
  font-weight:900;
  border:1px solid rgba(255,210,120,.55);
  box-shadow:0 0 18px rgba(200,30,60,.55),0 4px 14px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.28);
  animation:ruby-shimmer 3s linear infinite,ruby-glow 1.8s ease-in-out infinite alternate;
}
.btn-ruby:hover{filter:brightness(1.12)}
.btn-ruby::after{
  content:'';position:absolute;top:0;left:-85%;width:50%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.7),transparent);
  transform:skewX(-20deg);animation:ruby-sweep 2.6s ease-in-out infinite;pointer-events:none;
}
@keyframes ruby-shimmer{to{background-position:220% center}}
@keyframes ruby-sweep{0%{left:-85%}55%,100%{left:135%}}
@keyframes ruby-glow{
  from{text-shadow:0 0 6px rgba(150,195,255,.7),0 0 16px rgba(100,155,255,.35),0 1px 2px rgba(0,0,0,.55)}
  to{text-shadow:0 0 14px rgba(190,220,255,1),0 0 32px rgba(120,175,255,.85),0 1px 2px rgba(0,0,0,.55)}
}

.brandwrap{display:flex;flex-direction:column;align-items:flex-start;line-height:1.25}
.dateline{font-size:13px;font-weight:600;letter-spacing:1px;margin-top:8px;margin-left:4px;white-space:nowrap;color:#F5D76E;text-shadow:0 1px 3px rgba(0,0,0,.8);border-left:2px solid #F5D76E;padding-left:10px}

.slogan-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:12px 20px;margin:0 15px;
  background:radial-gradient(ellipse at center,rgba(20,20,30,.9) 0%,rgba(0,0,0,.95) 100%);
  border:2px solid #ff0040;border-radius:12px;
  box-shadow:0 0 20px rgba(255,0,64,.6),0 0 40px rgba(255,0,64,.3),inset 0 0 20px rgba(255,0,64,.15)}
.slogan-tien{font-size:32px;font-weight:900;letter-spacing:3px;text-align:center;color:#fff;
  text-shadow:0 0 10px #ff0040,0 0 20px #ff0040,0 0 30px #ff0040,0 0 40px #ff2266;
  animation:neonBlink 2s ease-in-out infinite}
@keyframes neonBlink{0%,100%{opacity:1}50%{opacity:.85}}