/*
================================================================================
FILE: css/best-answering-service.css
================================================================================
v2 · Tuesday/19/05/2026 · BURGER CLOSE BUTTON + X TRANSFORMATION
- .nav-header updated to flex layout (title left, X button right)
- New .nav-close-btn rules for the visible X button inside .nav-sidebar
- New .burger-menu.active .burger-line:nth-child(n) rules for the
  burger→X icon transformation when menu is open
v1 · earlier · initial styles
================================================================================
*/

    *{margin:0;padding:0;box-sizing:border-box}
    :root{--blue:#0066FF;--purple:#6366F1;--green:#10B981;--red:#EF4444;--orange:#F59E0B;--g400:#9CA3AF;--g500:#6B7280;}
    body{line-height:1.7;color:#fff;background:#0a0a0f;}
    a{color:inherit;text-decoration:none;}
    .bg-wrap{position:relative;isolation:isolate;min-height:100vh;}
    .bg-wrap::before{content:"";position:fixed;inset:0;z-index:-1;background:linear-gradient(to bottom,rgba(0,0,0,0.2),rgba(0,0,0,0.1));}
    .bg-wrap::after{content:"";position:fixed;inset:0;z-index:-2;background:url('../assets/team-connect-main-office.webp') center top/cover no-repeat;}
    .header{position:fixed;top:0;left:0;right:0;background:rgba(0,0,0,0.2);border-bottom:1px solid #222;z-index:1000;transition:background 0.3s;}.header.scrolled{background:#000;}
    .nav{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;}
    .logo{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:800;color:#0066FF;}.logo-img{height:40px;width:auto;border-radius:6px;}
    .burger-menu{position:fixed;top:20px;right:20px;z-index:1001;background:#fff;border:1px solid #E5E7EB;border-radius:12px;padding:12px;cursor:pointer;box-shadow:0 4px 6px rgba(0,0,0,0.1);}
    .burger-icon{width:24px;height:24px;display:flex;flex-direction:column;justify-content:space-between;}.burger-line{width:20px;height:2px;background:#1F2937;border-radius:2px;transition:all 0.3s;}
    .nav-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);opacity:0;visibility:hidden;z-index:999;transition:all 0.3s;}.nav-overlay.active{opacity:1;visibility:visible;}
    .nav-sidebar{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:rgba(15,23,42,0.98);border-left:1px solid rgba(55,65,81,0.9);z-index:1001;overflow-y:auto;transition:right 0.3s;padding-bottom:2rem;}.nav-sidebar.active{right:0;}
    .nav-header{padding:1.2rem;border-bottom:1px solid rgba(55,65,81,0.9);display:flex;justify-content:space-between;align-items:center;gap:0.8rem;}.nav-title{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#10B981,#14B8A6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
    .nav-section{padding:0.8rem 1rem;}.nav-section-title{padding:0 0 12px;font-size:0.8em;color:#6B7280;text-transform:uppercase;font-weight:600;letter-spacing:0.05em;}
    .nav-item{display:block;padding:0.55rem 0.7rem;border-radius:8px;font-size:0.92rem;color:#CBD5E1;transition:background 0.15s;margin-bottom:2px;}.nav-item:hover,.nav-item.active{background:rgba(16,185,129,0.15);color:#fff;}
    .breadcrumb{max-width:1200px;margin:72px auto 0;padding:10px 2rem;font-size:14px;color:rgba(255,255,255,0.6);}.breadcrumb a{color:var(--blue);}.breadcrumb a:hover{text-decoration:underline;}
    .ac{max-width:900px;margin:0 auto;padding:0 2rem 4rem;}
    .ah{padding:2.5rem 0 1.5rem;}
    .ah h1{font-size:clamp(2rem,5vw,2.8rem);font-weight:900;line-height:1.15;color:#fff;margin-bottom:0.6rem;letter-spacing:-0.02em;}
    .ameta{display:flex;align-items:center;gap:10px;font-size:0.88rem;color:var(--g400);margin-bottom:1.5rem;flex-wrap:wrap;}.ameta time{color:var(--g500);}
    .def{background:rgba(0,102,255,0.08);border-left:4px solid var(--blue);border-radius:0 14px 14px 0;padding:1.3rem 1.5rem;margin-bottom:2rem;font-size:1.05rem;color:rgba(255,255,255,0.92);line-height:1.75;}.def strong{color:#fff;}
    .toc{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-radius:16px;padding:1.6rem 1.8rem;margin-bottom:2.5rem;}
    .toc-t{font-weight:800;font-size:1rem;color:#fff;margin-bottom:0.6rem;}
    .toc-l{list-style:none;counter-reset:t;display:grid;grid-template-columns:1fr 1fr;gap:5px;}
    @media(max-width:600px){.toc-l{grid-template-columns:1fr;}}
    .toc-l li{counter-increment:t;}.toc-l li a{display:flex;align-items:center;gap:7px;color:rgba(255,255,255,0.7);text-decoration:none;padding:5px 8px;border-radius:6px;font-size:0.88rem;transition:all 0.2s;}.toc-l li a:hover{background:rgba(0,102,255,0.1);color:#fff;}
    .toc-l li a::before{content:counter(t,decimal-leading-zero);font-weight:800;font-size:0.75rem;color:var(--blue);min-width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:rgba(0,102,255,0.1);border-radius:5px;}
    .sb{margin-bottom:2.5rem;}
    .g h2{font-size:1.45rem;font-weight:800;color:#fff;margin-bottom:0.7rem;line-height:1.3;}
    .g h3{font-size:1.1rem;font-weight:700;color:#fff;margin:1.2rem 0 0.4rem;}
    .g p{color:rgba(255,255,255,0.82);margin-bottom:0.85rem;font-size:0.96rem;}
    .g ul{margin:0 0 0.9rem 1.3rem;color:rgba(255,255,255,0.78);}.g ul li{margin-bottom:0.35rem;font-size:0.93rem;}.g ul li strong{color:#fff;}
    .lnk{color:var(--blue);text-decoration:underline;text-underline-offset:3px;}.lnk:hover{color:#3B82F6;}
    .src{font-size:0.8rem;color:var(--g500);font-style:italic;}

    /* Quick picks */
    .picks{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:1.2rem 0;}
    @media(max-width:700px){.picks{grid-template-columns:1fr;}}
    .pick{background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.08);border-radius:12px;padding:1.2rem;text-align:center;transition:transform 0.2s;}.pick:hover{transform:translateY(-3px);}
    .pick-cat{font-size:0.78rem;font-weight:700;color:var(--g400);text-transform:uppercase;letter-spacing:0.05em;}
    .pick-name{font-size:1.3rem;font-weight:900;color:#fff;margin:0.3rem 0;}
    .pick-why{font-size:0.82rem;color:rgba(255,255,255,0.6);}

    /* Provider cards */
    .prov:hover{border-color:rgba(0,102,255,0.3);}
    .prov-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:0.8rem;flex-wrap:wrap;}
    .prov-name{font-size:1.2rem;font-weight:800;color:#fff;}
    .prov-badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:0.72rem;font-weight:700;text-transform:uppercase;letter-spacing:0.04em;}
    .badge-human{background:rgba(99,102,241,0.15);color:#818CF8;}
    .badge-ai{background:rgba(16,185,129,0.15);color:#10B981;}
    .badge-hybrid{background:rgba(245,158,11,0.15);color:#F59E0B;}
    .prov-meta{display:flex;gap:1.5rem;flex-wrap:wrap;font-size:0.85rem;color:var(--g400);margin-bottom:0.7rem;}
    .prov-meta strong{color:#fff;}
    .prov-desc{color:rgba(255,255,255,0.78);font-size:0.93rem;margin-bottom:0.8rem;}
    .prov-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.8rem;margin-bottom:0.5rem;}
    @media(max-width:600px){.prov-grid{grid-template-columns:1fr;}}
    .prov-pros,.prov-cons{font-size:0.88rem;}
    .prov-pros strong{color:var(--green);}.prov-cons strong{color:var(--red);}
    .prov-pros ul,.prov-cons ul{margin:0.3rem 0 0 1.2rem;color:rgba(255,255,255,0.72);}
    .prov-pros ul li::marker{color:var(--green);}.prov-cons ul li::marker{color:var(--red);}
    .prov-link{display:inline-block;margin-top:0.5rem;color:var(--blue);font-weight:600;font-size:0.88rem;text-decoration:underline;text-underline-offset:3px;}
    .prov-best{display:inline-block;margin-top:0.6rem;padding:4px 12px;border-radius:999px;font-size:0.78rem;font-weight:700;background:rgba(0,102,255,0.1);color:var(--blue);}

    /* Master table */
    .tw{overflow-x:auto;margin:1.2rem 0;border-radius:12px;border:1px solid rgba(255,255,255,0.08);}
    table{width:100%;border-collapse:collapse;font-size:0.85rem;}
    thead{background:rgba(0,102,255,0.1);}
    th{padding:10px 12px;text-align:left;color:#fff;font-weight:700;border-bottom:2px solid rgba(255,255,255,0.1);white-space:nowrap;}
    td{padding:9px 12px;border-bottom:1px solid rgba(255,255,255,0.04);color:rgba(255,255,255,0.78);}
    tbody tr:hover{background:rgba(255,255,255,0.03);}
    .cg{color:var(--green);font-weight:600;}.cr{color:var(--red);font-weight:600;}.co{color:var(--orange);font-weight:600;}

    /* FAQ */
    .faq-list{display:flex;flex-direction:column;gap:8px;margin:1rem 0;}
    .fi{border:1px solid rgba(255,255,255,0.08);border-radius:12px;overflow:hidden;transition:border-color 0.2s;}.fi.open{border-color:rgba(0,102,255,0.25);}
    .fq{display:flex;justify-content:space-between;align-items:center;padding:0.9rem 1.2rem;cursor:pointer;font-weight:700;color:#fff;font-size:0.93rem;background:rgba(255,255,255,0.02);transition:background 0.2s;gap:10px;}.fq:hover{background:rgba(0,102,255,0.04);}
    .fa-arrow{width:18px;height:18px;transition:transform 0.3s;flex-shrink:0;color:var(--blue);}.fi.open .fa-arrow{transform:rotate(180deg);}
    .fa{max-height:0;overflow:hidden;transition:max-height 0.35s ease,padding 0.35s ease;padding:0 1.2rem;}.fi.open .fa{max-height:500px;padding:0 1.2rem 1rem;}
    .fa p{font-size:0.9rem;color:rgba(255,255,255,0.72);margin:0;}

    /* CTA */
    .cta-s{text-align:center;padding:3rem 0 1rem;}
    .cta-s h2{font-size:1.7rem;font-weight:800;color:#fff;margin-bottom:0.4rem;}
    .cta-s p{color:rgba(255,255,255,0.7);font-size:0.95rem;max-width:580px;margin:0 auto 1rem;line-height:1.6;}
    .btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;font-weight:700;font-size:0.95rem;border-radius:10px;text-decoration:none;transition:all 0.2s;border:none;cursor:pointer;}
    .btn-p{background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;box-shadow:0 4px 14px rgba(0,102,255,0.3);}.btn-p:hover{transform:translateY(-2px);}
    .btn-g{background:var(--green);color:#fff;margin-left:10px;}.btn-g:hover{transform:translateY(-2px);}
    /* Case Studies */
    .case-studies-home{padding:80px 2rem;background:transparent}
    .cs-stagger{display:flex;flex-direction:column;gap:48px;max-width:1100px;margin:0 auto}
    .cs-stagger-item{display:flex;align-items:center;gap:40px;text-decoration:none;background:rgba(255,255,255,.04);border:1px solid rgba(255,140,0,.35);border-radius:20px;overflow:hidden;transition:all .35s ease;cursor:pointer}
    .cs-stagger-item:hover{border-color:rgba(255,140,0,.8);transform:translateY(-4px);box-shadow:0 12px 40px rgba(255,140,0,.15)}
    .cs-stagger-item:nth-child(even){flex-direction:row-reverse}
    .cs-stagger-img{width:340px;min-height:240px;flex-shrink:0;overflow:hidden}
    .cs-stagger-img img{width:100%;height:100%;min-height:240px;object-fit:cover;display:block;transition:transform .5s ease}
    .cs-stagger-item:hover .cs-stagger-img img{transform:scale(1.05)}
    .cs-stagger-body{padding:32px 32px 32px 0;flex:1}
    .cs-stagger-item:nth-child(even) .cs-stagger-body{padding:32px 0 32px 32px}
    .cs-stagger-industry{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#ff8c00;margin-bottom:8px;transition:color .3s ease}
    .cs-stagger-item:hover .cs-stagger-industry{color:var(--green)}
    .cs-stagger-title{font-size:1.35rem;font-weight:800;color:#fff;line-height:1.3;margin-bottom:12px}
    .cs-stagger-desc{font-size:.92rem;color:rgba(255,255,255,.65);line-height:1.7;margin-bottom:20px}
    .cs-stagger-stats{display:flex;gap:20px;flex-wrap:wrap}
    .cs-stat-pill{background:rgba(16,185,129,.15);border:1px solid rgba(16,185,129,.3);color:#34d399;padding:6px 14px;border-radius:50px;font-size:.82rem;font-weight:700}
    .cs-stagger-arrow{color:rgba(255,255,255,.3);font-size:1.3rem;transition:color .3s ease,transform .3s ease;flex-shrink:0;padding-right:24px}
    .cs-stagger-item:nth-child(even) .cs-stagger-arrow{padding-right:0;padding-left:24px}
    .cs-stagger-item:hover .cs-stagger-arrow{color:rgba(255,140,0,.9);transform:translateX(4px)}
    .cs-view-all{text-align:center;margin-top:48px}
    /* Blog */
    .blog-home{padding:80px 2rem;background:transparent}
    .blog-scroll-wrapper{position:relative;max-width:1200px;margin:0 auto}
    .blog-scroll{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding-bottom:16px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent}
    .blog-scroll::-webkit-scrollbar{height:6px}
    .blog-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.05);border-radius:3px}
    .blog-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:3px}
    .blog-scroll-card{min-width:320px;max-width:340px;flex-shrink:0;scroll-snap-align:start;background:rgba(255,255,255,.04);border:1px solid rgba(255,140,0,.35);border-radius:16px;padding:28px;display:flex;flex-direction:column;text-decoration:none;transition:all .35s ease;cursor:pointer}
    .blog-scroll-card:hover{border-color:rgba(255,140,0,.8);transform:translateY(-4px);box-shadow:0 8px 30px rgba(255,140,0,.15)}
    .blog-scroll-tag{display:inline-block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:#ff8c00;margin-bottom:12px;transition:color .3s ease}
    .blog-scroll-card:hover .blog-scroll-tag{color:var(--green)}
    .blog-scroll-title{font-size:1.1rem;font-weight:700;color:#fff;line-height:1.35;margin-bottom:12px}
    .blog-scroll-excerpt{font-size:.88rem;color:rgba(255,255,255,.55);line-height:1.65;flex:1;margin-bottom:20px}
    .blog-scroll-meta{display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.08);padding-top:16px}
    .blog-scroll-date{font-size:.78rem;color:rgba(255,255,255,.4)}
    .blog-scroll-read{font-size:.82rem;font-weight:600;color:#ff8c00;transition:color .3s ease}
    .blog-scroll-card:hover .blog-scroll-read{color:var(--green)}
    .blog-scroll-nav{display:flex;justify-content:center;gap:12px;margin-top:24px}
    .blog-scroll-btn{width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:rgba(255,255,255,.7);font-size:18px;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center}
    .blog-scroll-btn:hover{background:rgba(255,140,0,.15);border-color:rgba(255,140,0,.5);color:#ff8c00}
    .blog-view-all{text-align:center;margin-top:32px}
    .section-header-cs{text-align:center;margin-bottom:3rem}
    .section-badge-cs{display:inline-block;background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff;padding:8px 20px;border-radius:999px;font-size:.8rem;font-weight:700;margin-bottom:20px;text-transform:uppercase}
    .section-title-cs{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:#fff;margin-bottom:1rem}
    .section-subtitle-cs{font-size:1.1rem;color:rgba(255,255,255,.7);max-width:600px;margin:0 auto}
    @media(max-width:768px){
    .cs-stagger-item,.cs-stagger-item:nth-child(even){flex-direction:column}
    .cs-stagger-img{width:100%;min-height:200px;max-height:220px}
    .cs-stagger-body,.cs-stagger-item:nth-child(even) .cs-stagger-body{padding:24px}
    .cs-stagger-arrow{display:none}
    .cs-stagger-title{font-size:1.15rem}
    .blog-scroll-card{min-width:280px;max-width:300px;padding:22px}
    .blog-scroll-title{font-size:1rem}
    .blog-scroll-nav{display:none}
    }
    /* Footer */
    .footer{background:rgba(0,0,0,0.9);border-top:1px solid #222;padding:4rem 2rem 2rem;}
    .fc{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;}
    .footer h3{font-size:1.1em;font-weight:700;color:#fff;margin-bottom:1rem;}.footer h4{font-size:0.9em;font-weight:600;color:var(--g400);margin-bottom:1rem;text-transform:uppercase;letter-spacing:0.05em;}
    .footer p{color:var(--g500);font-size:0.9em;line-height:1.6;}
    .fs a{display:block;color:var(--g400);text-decoration:none;padding:4px 0;font-size:0.9em;transition:color 0.2s;}.fs a:hover{color:var(--blue);}
    .fb{max-width:1200px;margin:2rem auto 0;padding-top:1.5rem;border-top:1px solid #222;text-align:center;color:var(--g500);font-size:0.85em;}
    .sl{display:flex;gap:12px;margin-top:1rem;}.social-link{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;transition:all 0.2s;}.social-link:hover{background:var(--blue);transform:translateY(-2px);}.social-icon{width:20px;height:20px;display:block;}
    @media(max-width:768px){.fc{grid-template-columns:1fr;text-align:center;gap:2rem;}.sl{justify-content:center;}}


/* === v7 Burger Menu Close Button + X Transformation === */
/* Visible X close button inside the .nav-sidebar header */
.nav-close-btn{
    background:rgba(255,255,255,0.05);
    border:1px solid rgba(255,255,255,0.12);
    color:#fff;
    width:36px;
    height:36px;
    border-radius:8px;
    font-size:1.5rem;
    line-height:1;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:0;
    font-family:inherit;
    transition:background 0.2s, border-color 0.2s, transform 0.15s;
    flex-shrink:0;
}
.nav-close-btn:hover{
    background:rgba(255,255,255,0.1);
    border-color:rgba(255,255,255,0.2);
}
.nav-close-btn:active{
    transform:scale(0.95);
}

/* Burger icon transforms to X when menu is active */
.burger-menu.active .burger-line:nth-child(1){
    transform:translateY(7px) rotate(45deg);
}
.burger-menu.active .burger-line:nth-child(2){
    opacity:0;
}
.burger-menu.active .burger-line:nth-child(3){
    transform:translateY(-7px) rotate(-45deg);
}
/* === end v7 burger close button === */