/* ============================================================
   Big7 — Dark casino theme (format Sun.win). Demo faithful.
   Màu/fact là placeholder; ảnh là ô placeholder ghi size.
   ============================================================ */
:root{
  --bg:#0b0a08; --bg-2:#13110c; --panel:#1a1710; --panel-2:#221d13;
  --line:#332b1c; --gold:#f5c542; --gold-2:#caa233; --red:#d93b3b;
  --text:#ece8df; --muted:#9c9484; --on-gold:#1a1409;
  --elev:0 12px 30px rgba(0,0,0,.45); --elev-hover:0 18px 46px rgba(0,0,0,.58);
}
/* ===== 7 GAM MÀU BRAND (màu THẬT trích từ site; iwin tạm chưa lấy được) ===== */
[data-palette="sunwin"]  { --bg:#0e0b06; --bg-2:#16110a; --panel:#1e1810; --line:#3a2f1d; --gold:#ffd388; --gold-2:#cfb689; --red:#d93b3b; }
[data-palette="go88"]    { --bg:#100c05; --bg-2:#181208; --panel:#20180c; --line:#3d2f16; --gold:#f7a600; --gold-2:#f6d21e; --red:#ff6a00; }
[data-palette="789club"] { --bg:#060516; --bg-2:#0a0820; --panel:#11102a; --line:#221f3d; --gold:#ffe0b6; --gold-2:#cfb689; --red:#a197ff; }
[data-palette="hitclub"] { --bg:#0c0807; --bg-2:#160d0a; --panel:#1f140f; --line:#3a2418; --gold:#ffd000; --gold-2:#fbbe0b; --red:#ee3100; }
[data-palette="rikvip"]  { --bg:#100808; --bg-2:#1a0d0d; --panel:#241212; --line:#3d2020; --gold:#fbbf24; --gold-2:#d99a1a; --red:#e11d2a; }
[data-palette="b52club"] { --bg:#07140c; --bg-2:#0c1c11; --panel:#112619; --line:#1f3d2a; --gold:#e9d18a; --gold-2:#bca64a; --red:#2ea043; }
[data-palette="iwin"]    { --bg:#070b14; --bg-2:#0c1322; --panel:#111a2e; --line:#1e2c48; --gold:#f5b300; --gold-2:#c79100; --red:#2563eb; }

/* Panel chuyển màu (chỉ để demo — không lên production) */
.b7-switch{position:fixed;top:0;left:0;right:0;z-index:9999;background:#111;border-bottom:2px solid var(--gold);
  display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:8px 14px;font-size:13px}
.b7-switch .lbl{color:#9CA3AF;font-weight:600;text-transform:uppercase;letter-spacing:1px;font-size:11px;margin-right:4px}
.b7-switch button,.b7-switch a.b7-vbtn{background:#1F2937;border:1px solid #374151;color:#fff;border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:600;text-decoration:none;display:inline-block}
.b7-switch button.active,.b7-switch a.b7-vbtn.active{background:var(--gold);border-color:var(--gold);color:#1a1409}
.b7-switch .div{border-left:1px solid #444;height:22px;margin:0 4px}
body.has-switch{padding-top:46px}

/* Header menu — ẩn, chỉ hiện khi kéo xuống */
.b7-header{position:fixed;top:46px;left:0;right:0;z-index:8000;
  background:rgba(10,8,6,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);box-shadow:0 6px 24px rgba(0,0,0,.5);
  transform:translateY(-130%);transition:transform .32s cubic-bezier(.16,1,.3,1)}
.b7-header.show{transform:translateY(0)}
.b7-header-top{max-width:1200px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:center;gap:36px}
.b7-header-logo{height:42px;width:auto}
.b7-header-auth{display:flex;gap:12px}
.b7-hnav{display:flex;gap:32px;justify-content:center;flex-wrap:wrap;padding:12px 24px;border-top:1px solid var(--line)}
/* hover: gạch chân trượt + đổi màu */
.b7-hnav a{position:relative;color:var(--text);font-weight:600;font-size:14px;padding:4px 2px;transition:color .18s ease}
.b7-hnav a::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--gold),var(--gold-2));transform:scaleX(0);transform-origin:left;transition:transform .22s cubic-bezier(.16,1,.3,1)}
.b7-hnav a:hover{color:var(--gold)}
.b7-hnav a:hover::after{transform:scaleX(1)}
/* Hover style: pill / glow (underline = mặc định) */
[data-hover="pill"] .b7-hnav a{padding:6px 14px;border-radius:999px}
[data-hover="pill"] .b7-hnav a::after{display:none}
[data-hover="pill"] .b7-hnav a:hover{background:rgba(255,255,255,.1);color:var(--gold)}
[data-hover="glow"] .b7-hnav a::after{display:none}
[data-hover="glow"] .b7-hnav a:hover{color:var(--gold);text-shadow:0 0 14px var(--gold),0 0 4px var(--gold)}
/* Dropdown menu */
.b7-darr{font-style:normal;font-size:11px;margin-left:4px;opacity:.85}
[data-dropdown="off"] .b7-darr{display:none}
.b7-hitem{position:relative;display:inline-flex;align-items:center}
.b7-dropdown{display:none;position:absolute;top:100%;left:0;min-width:190px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--elev);padding:6px;margin-top:8px;z-index:20}
.b7-dropdown a{display:block;padding:9px 12px;border-radius:8px;color:var(--text);font-size:14px;font-weight:500}
.b7-dropdown a::after{display:none}
.b7-dropdown a:hover{background:rgba(255,255,255,.07);color:var(--gold)}
[data-dropdown="on"] .b7-hitem:hover>.b7-dropdown{display:block}
@media(max-width:700px){.b7-hnav{display:none}}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Roboto',system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.7;color:var(--text);
  background:
    radial-gradient(1000px 480px at 50% -160px, var(--panel) 0%, transparent 58%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  background-attachment:fixed}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding-inline:16px}
.read{max-width:900px;margin:0 auto;padding-inline:16px}

/* placeholder ảnh */
.b7-img{background:repeating-linear-gradient(45deg,#1c1810,#1c1810 10px,#191510 10px,#191510 20px);
  border:1px dashed #443a26;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:#6f6850;font-size:13px;text-align:center;min-height:120px;padding:10px}

/* ---------- LAYOUT 3-6-3 (rail trái/phải STICKY, giữa cuộn) ---------- */
.b7-layout{max-width:1340px;margin:0 auto;padding:18px 16px;display:grid;grid-template-columns:3fr 6fr 3fr;gap:18px;align-items:start}
.b7-rail{position:sticky;top:58px}
.b7-main{min-width:0}
.b7-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}
.b7-find h4{color:var(--gold);font-size:13px;letter-spacing:1px;text-transform:uppercase;text-align:center;margin-bottom:4px}
.b7-find .ok{color:#2ecc71;text-align:center;font-size:12px;margin-bottom:12px}
.b7-step{display:flex;gap:10px;align-items:center;padding:8px 0;border-top:1px solid var(--line);font-size:14px}
.b7-step b{color:var(--gold)}
.b7-find .qr{margin-top:12px;text-align:center}
.b7-find .qr .b7-img{width:96px;height:96px;margin:0 auto;min-height:0}

.b7-login{text-align:center}
.b7-logo{font-size:34px;font-weight:800;color:var(--gold);letter-spacing:1px;margin-bottom:4px}
.b7-logo span{color:var(--red)}
.b7-login .tag{color:var(--muted);font-size:14px;margin-bottom:16px}
.b7-form{display:flex;flex-direction:column;gap:10px;max-width:360px;margin:0 auto}
.b7-form input{background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:12px 14px;color:var(--text);font-size:15px}
.b7-form input::placeholder{color:#6f6850}
.b7-btn{display:inline-block;background:linear-gradient(180deg,var(--gold),var(--gold-2));color:var(--on-gold);
  font-weight:800;padding:13px 22px;border-radius:8px;border:0;cursor:pointer;font-size:15px;text-decoration:none}
.b7-btn:hover{filter:brightness(1.06);text-decoration:none}
.b7-btn-ghost{background:transparent;border:1px solid var(--gold);color:var(--gold)}
.b7-or{color:var(--muted);font-size:13px;margin:6px 0}
.b7-note{color:var(--muted);font-size:12px;margin-top:14px;line-height:1.5}
.b7-note b{color:var(--red)}
.b7-social{display:flex;gap:12px;justify-content:center;margin-top:12px;font-size:20px}

.b7-warn h4{color:var(--red);font-size:13px;letter-spacing:1px;text-transform:uppercase;text-align:center;margin-bottom:10px}
.b7-warn .b7-img{height:220px}

/* ---------- BRAND STRIP ---------- */
.b7-brands{display:flex;gap:24px;justify-content:center;align-items:center;flex-wrap:wrap;
  padding:16px;border-block:1px solid var(--line);background:var(--bg-2)}
.b7-brands .lbl{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:1px}
.b7-brand{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 16px;color:var(--text);font-weight:700}

/* ---------- SECTION + HEADING ---------- */
.b7-section{padding:30px 0}
.b7-h2{text-align:center;color:var(--gold);font-size:26px;font-weight:800;text-transform:uppercase;letter-spacing:1px;margin-bottom:26px}
.b7-pillar p{margin-bottom:14px}
.b7-pillar .sapo{font-size:18px}
.b7-pillar ul{margin:10px 0 14px 22px}
.b7-pillar li{margin-bottom:8px}
.b7-banner .b7-img{height:240px;margin-top:8px}

/* ---------- FEATURE GRID ---------- */
.b7-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.b7-feat{display:flex;gap:12px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}
.b7-feat .ic{font-size:26px;flex:none}
.b7-feat h3{font-size:16px;color:var(--gold);margin-bottom:4px}
.b7-feat p{font-size:14px;color:var(--muted);margin:0}

/* ---------- ADVANTAGES 2 CỘT ---------- */
.b7-adv{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.b7-adv .col{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}
.b7-adv h3{color:var(--gold);font-size:18px;margin-bottom:12px}
.b7-adv ul{list-style:none}
.b7-adv li{padding:6px 0;border-top:1px solid var(--line);font-size:14px}

/* ---------- GAME SHOWCASE (ảnh + jackpot) ---------- */
.b7-games{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}
.b7-game{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.b7-game .b7-img{height:150px;border:0;border-radius:0;border-bottom:1px solid var(--line)}
.b7-game .info{padding:10px 12px;display:flex;justify-content:space-between;align-items:center}
.b7-game .nm{font-weight:700;font-size:14px}
.b7-game .jp{color:var(--gold);font-weight:800;font-size:13px;font-variant-numeric:tabular-nums}

/* ---------- GAME TYPES (cột) ---------- */
.b7-types{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}
.b7-type{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px}
.b7-type h3{color:var(--gold);font-size:16px;margin-bottom:8px}
.b7-type p{font-size:14px;color:var(--muted);margin:0}

/* ---------- SECURITY CARDS ---------- */
.b7-secs{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.b7-sec{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.b7-sec .b7-img{height:170px;border:0;border-radius:0}
.b7-sec .bd{padding:16px}
.b7-sec h3{color:var(--gold);font-size:15px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.b7-sec p{font-size:14px;color:var(--muted);margin:0}

/* ---------- CSKH ---------- */
.b7-cskh{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;align-items:center}
.b7-cskh .b7-img{height:200px}

/* ---------- FOOTER ---------- */
.b7-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:40px 16px 0;margin-top:40px}
.b7-footer-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.b7-footer h4{color:var(--gold);font-size:14px;margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}
.b7-footer ul{list-style:none}
.b7-footer li{margin-bottom:8px;font-size:14px}
.b7-footer a{color:var(--muted)}
.b7-footer a:hover{color:var(--gold)}
.b7-legal{max-width:1100px;margin:28px auto 0;border-top:1px solid var(--line);padding:18px 0;
  font-size:12px;color:#7a7464;line-height:1.6;text-align:center}

/* ---------- COMPONENT PAGES (dark) ---------- */
.b7-bc{background:var(--bg-2);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.b7-bc .wrap{padding-block:12px}
.b7-bc a{color:var(--muted)} .b7-bc a:hover{color:var(--gold)} .b7-bc .sep{margin:0 8px;color:var(--line)}
.b7-phero{background:linear-gradient(135deg,#1a1206,#0b0a08);border-bottom:1px solid var(--line)}
.b7-phero .read{padding:40px 16px}
.b7-phero h1{font-size:30px;color:var(--gold);line-height:1.3;margin-bottom:8px}
.b7-phero p{color:var(--muted)}
.b7-content{max-width:900px;margin:0 auto;padding:40px 16px}
.b7-content .sapo{font-size:18px;margin-bottom:16px}
.b7-content h2{color:var(--gold);font-size:24px;border-left:4px solid var(--red);padding-left:14px;margin:28px 0 14px}
.b7-content h3{color:var(--gold-2);font-size:18px;margin:18px 0 8px}
.b7-content p{margin-bottom:14px}
.b7-content ul{margin:10px 0 14px 22px}
.b7-cta-block{background:linear-gradient(135deg,#2a1d08,#1a1710);border:1px solid var(--line);border-radius:12px;
  padding:24px;text-align:center;margin:24px 0}
.b7-cta-block h3{color:var(--gold);margin-bottom:8px}
.b7-cta-block p{color:var(--muted);margin-bottom:14px}
.b7-postlist{max-width:900px;margin:0 auto;padding:36px 16px;display:grid;gap:16px}
.b7-post{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px}
.b7-post:hover{border-color:var(--gold-2)}
.b7-post .cat{color:var(--gold);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px}
.b7-post h3{margin:6px 0;font-size:19px} .b7-post h3 a{color:var(--text)} .b7-post h3 a:hover{color:var(--gold)}
.b7-post .meta{color:var(--muted);font-size:12px;margin-bottom:8px}
.b7-post .ex{color:var(--muted);font-size:14px;margin-bottom:10px}
.b7-archead{text-align:center;background:var(--bg-2);border-bottom:1px solid var(--line)}
.b7-archead .read{padding:40px 16px 28px}
.b7-archead h1{color:var(--gold);font-size:28px} .b7-archead p{color:var(--muted)}
.b7-faq{max-width:900px;margin:0 auto;padding:40px 16px}
.b7-faq-item{background:var(--panel);border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.b7-faq-item summary{padding:16px 20px;cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between}
.b7-faq-item summary::-webkit-details-marker{display:none}
.b7-faq-item summary::after{content:"+";color:var(--gold);font-size:22px}
.b7-faq-item[open] summary::after{content:"−"}
.b7-faq-content{padding:0 20px 16px;color:var(--muted)}
.b7-final{text-align:center;background:linear-gradient(135deg,#2a1d08,#0b0a08);padding:44px 16px;border-top:1px solid var(--line)}
.b7-final h2{color:var(--gold);font-size:26px;margin-bottom:10px}
.b7-final p{color:var(--muted);margin-bottom:18px}

/* ===== GRADIENT + FLOATING (nội dung nổi lên) ===== */
.b7-h2{background:linear-gradient(135deg,var(--gold),var(--gold-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.b7-card,.b7-feat,.b7-game,.b7-type,.b7-sec,.b7-post,.b7-cta-block,.b7-faq-item,.b7-adv .col{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,0) 44%),var(--panel);
  border-radius:16px;box-shadow:var(--elev);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.b7-card:hover,.b7-feat:hover,.b7-game:hover,.b7-type:hover,.b7-sec:hover,.b7-post:hover{
  transform:translateY(-5px);box-shadow:var(--elev-hover);border-color:var(--gold-2)}
.b7-brand{background:linear-gradient(180deg,var(--panel),var(--bg-2));border-radius:10px;box-shadow:var(--elev)}
.b7-btn{box-shadow:0 8px 20px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.45)}
.b7-logo-img{display:block;margin:0 auto 10px;width:auto;height:auto;max-width:260px;max-height:96px;filter:drop-shadow(0 6px 14px rgba(0,0,0,.55))}
.b7-logo-foot{height:42px;width:auto;filter:drop-shadow(0 4px 10px rgba(0,0,0,.5))}
.b7-game{overflow:hidden}

/* ===== COMPONENT BIẾN THỂ (v2/v3) ===== */
.b7-container{max-width:1100px;margin:0 auto;padding:0 16px}
/* v2: hero full-width (login giữa, 2 box dưới) */
.b7-hero-full{max-width:760px;margin:0 auto;padding:30px 16px 10px;text-align:center}
.b7-hero-boxes{max-width:1100px;margin:0 auto 10px;padding:0 16px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
/* v2: game cuộn ngang */
.b7-games-scroll{display:flex;gap:16px;overflow-x:auto;padding:4px 2px 12px;scroll-snap-type:x mandatory}
.b7-games-scroll .b7-game{flex:0 0 220px;scroll-snap-align:start}
/* v3: feature dạng list dọc */
.b7-feat-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
/* v3: game lưới 2 cột cố định */
.b7-games-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:760px;margin:0 auto}

/* ===== HEADER loại B / C ===== */
.b7-hdrb-inner{max-width:1200px;margin:0 auto;padding:10px 24px;display:flex;align-items:center;gap:32px}
.b7-hdrb-inner .b7-hnav{flex:1;border-top:0;padding:0;justify-content:center}
.b7-hdrc-inner{max-width:1000px;margin:0 auto;padding:12px 24px;display:flex;flex-direction:column;align-items:center;gap:10px}
.b7-hdrc-inner .b7-hnav{border-top:0;padding:0}

/* ===== FOOTER loại B / C ===== */
.b7-ftrb{max-width:900px;margin:0 auto;padding:30px 16px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.b7-ftrb-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.b7-ftrb-links a{color:var(--muted);font-size:14px}
.b7-ftrb-links a:hover{color:var(--gold)}
.b7-ftrc-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}

/* ===== BLOG (grid v1 / list v2) ===== */
.b7-blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.b7-blog-list{display:flex;flex-direction:column;gap:12px;max-width:840px;margin:0 auto}
.b7-bpost{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--elev);transition:transform .18s,box-shadow .18s,border-color .18s}
.b7-bpost:hover{transform:translateY(-4px);box-shadow:var(--elev-hover);border-color:var(--gold-2)}
.b7-bthumb{height:150px;border-radius:0;border:0;border-bottom:1px solid var(--line)}
.b7-bpost .bd{padding:14px}
.b7-bpost .cat{color:var(--gold);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px}
.b7-bpost h3{font-size:16px;margin:6px 0;color:var(--text)}
.b7-bpost p{font-size:13px;color:var(--muted);margin:0}
.b7-blog-list .b7-bpost{display:flex;align-items:stretch}
.b7-blog-list .b7-bthumb{width:220px;flex:none;border-bottom:0;border-right:1px solid var(--line)}
@media(max-width:600px){.b7-blog-list .b7-bpost{flex-direction:column}.b7-blog-list .b7-bthumb{width:auto;border-right:0;border-bottom:1px solid var(--line)}}

/* ---------- RESPONSIVE ---------- */
@media(max-width:760px){.b7-hero-boxes{grid-template-columns:1fr}.b7-games-2{grid-template-columns:1fr}}
@media(max-width:900px){
  .b7-layout{grid-template-columns:1fr;max-width:680px}
  .b7-rail{display:none}          /* mobile/tablet: ẩn 2 rail (find-link + cảnh báo) cho gọn */
  .b7-cskh{grid-template-columns:1fr}
  .b7-footer-grid{grid-template-columns:1fr;gap:20px}
}

/* ============================================================
   PRODUCTION overrides (trang thật — không configurator)
   ============================================================ */
.b7-header{top:0}              /* không còn thanh switch 46px */
.b7-rail{top:18px}
/* ảnh section thật (thay ô placeholder) */
.b7-secfig{margin:0 0 16px}
.b7-secfig img{width:100%;height:auto;display:block;border-radius:14px;border:1px solid var(--line);box-shadow:var(--elev)}
/* card game = link (icon + tên + mô tả) */
a.b7-feat{text-decoration:none}
a.b7-feat:hover{text-decoration:none;transform:translateY(-5px);box-shadow:var(--elev-hover);border-color:var(--gold-2)}
/* rail an toàn (không fabricate) */
.b7-find .b7-step:first-of-type{border-top:0}

/* ===== TINH CHỈNH MOBILE (điện thoại) ===== */
@media(max-width:700px){
  .b7-header-top{gap:14px;padding:10px 14px;flex-wrap:wrap}  /* không tràn ngang */
  .b7-header-logo{height:34px}
  .b7-logo-img{max-height:70px}                              /* logo hero nhỏ lại */
  .b7-h2{font-size:21px}
  .b7-phero h1,.b7-archead h1{font-size:23px;line-height:1.3}
  .b7-section{padding:22px 0}
  .b7-content,.b7-postlist,.b7-faq{padding-left:14px;padding-right:14px}
  .b7-login{padding:16px 14px}
  .b7-legal{font-size:11px}
}