/* =========================================================================
   BV-MEDIA — STYLESHEET
   ========================================================================= */
:root{
    --primary:#1657ff;      /* xanh chủ đạo */
    --primary-dark:#0c3fd1;
    --accent:#ff5a2c;       /* cam nhấn */
    --ink:#0e1730;          /* chữ đậm */
    --body:#48526b;         /* chữ thường */
    --muted:#7a879e;        /* chữ phụ */
    --line:#e7ebf3;
    --bg:#ffffff;
    --bg-soft:#f5f8ff;
    --bg-dark:#0b1230;
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 10px 40px rgba(16,34,80,.08);
    --shadow-lg:0 24px 60px rgba(16,34,80,.14);
    --maxw:1200px;
    --font:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--body);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:700}
h1{font-size:clamp(2rem,4.5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-label{display:inline-block;color:var(--primary);font-weight:700;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
.section-head{margin-bottom:48px}
.section-head p{color:var(--muted);max-width:620px;margin-top:10px}
.section-head.center{text-align:center}
.section-head.center p{margin-left:auto;margin-right:auto}
.section-head.split{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:inherit;font-weight:600;font-size:.98rem;padding:13px 26px;border-radius:50px;border:2px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(22,87,255,.35)}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.18)}
.btn-sm{padding:9px 18px;font-size:.9rem}
.btn-lg{padding:16px 32px;font-size:1.02rem}
.btn-block{width:100%;justify-content:center}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:.3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(16,34,80,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800}
.logo-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:1.05rem;letter-spacing:-.02em}
.logo-text{font-size:1.25rem;color:var(--ink);line-height:1}
.logo-text small{display:block;font-size:.62rem;letter-spacing:.32em;color:var(--muted);font-weight:600}
.main-nav{display:flex;gap:6px;margin-left:auto}
.main-nav a{padding:9px 15px;border-radius:8px;font-weight:600;font-size:.96rem;color:var(--ink);transition:.2s}
.main-nav a:hover{color:var(--primary);background:var(--bg-soft)}
.main-nav a.active{color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:14px}
.header-phone{display:flex;align-items:center;gap:7px;font-weight:700;color:var(--ink);font-size:.95rem}
.header-phone svg{width:18px;height:18px;color:var(--primary)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--bg-soft),#fff)}
.hero-bg{position:absolute;inset:0;background:
    radial-gradient(600px 400px at 85% 10%,rgba(22,87,255,.14),transparent),
    radial-gradient(500px 400px at 10% 90%,rgba(255,90,44,.10),transparent)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:80px 24px 90px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:var(--primary);font-weight:600;font-size:.86rem;padding:8px 16px;border-radius:50px;box-shadow:var(--shadow);margin-bottom:22px}
.hero-badge svg{width:16px;height:16px}
.hero-content h1{margin-bottom:20px;letter-spacing:-.02em}
.hero-sub{font-size:1.12rem;color:var(--body);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-mini-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-mini-stats div{display:flex;flex-direction:column}
.hero-mini-stats strong{font-size:1.7rem;color:var(--ink);font-weight:800}
.hero-mini-stats span{font-size:.88rem;color:var(--muted)}
.hero-visual{position:relative;height:420px}
.hero-illustration{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;z-index:1;animation:floatSlow 6s ease-in-out infinite;filter:drop-shadow(0 20px 40px rgba(16,34,80,.10))}
@keyframes floatSlow{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hero-card{position:absolute;background:#fff;border-radius:14px;padding:16px 18px;box-shadow:var(--shadow-lg);font-size:.9rem;font-weight:600;color:var(--body);z-index:2;display:flex;align-items:center;gap:12px;animation:float 5s ease-in-out infinite}
.hero-card b{display:block;color:var(--ink);font-size:1.05rem}
.hero-card-1{top:30px;left:-10px}
.hero-card-2{bottom:36px;right:-6px;animation-delay:1.5s}
.hero-card-2 svg{width:34px;height:34px;color:var(--primary)}
.hero-card-2 span{font-size:.78rem;color:var(--muted);font-weight:500}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.dot-green{background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.2)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- Partners marquee ---------- */
.partners{padding:40px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.partners-label{text-align:center;color:var(--muted);font-size:.82rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:26px}
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;align-items:center;gap:64px;width:max-content;animation:scroll 26s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.partner-item img{height:38px;width:auto;filter:grayscale(1);opacity:.7;transition:.3s}
.partner-item:hover img{filter:none;opacity:1}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.about-media{position:relative}
.about-media img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.about-badge-float{position:absolute;right:-14px;bottom:-14px;background:var(--primary);color:#fff;border-radius:14px;padding:16px 22px;box-shadow:var(--shadow-lg);text-align:center}
.about-badge-float strong{display:block;font-size:1.8rem;font-weight:800;line-height:1}
.about-badge-float span{font-size:.8rem;opacity:.9}
.about-body p{color:var(--muted);margin-bottom:22px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.check-list li{display:flex;align-items:flex-start;gap:11px;font-weight:500;color:var(--ink)}
.check-list li svg{width:20px;height:20px;flex:none;color:#fff;background:var(--primary);border-radius:50%;padding:3px;margin-top:2px}
.check-list.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px}

/* ---------- Stats band ---------- */
.stats-band{background:var(--bg-dark);color:#fff;padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-number{font-size:clamp(2rem,4vw,3rem);font-weight:800;background:linear-gradient(135deg,#7ea8ff,#fff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{color:#aeb9d6;font-size:.95rem;margin-top:6px}

/* ---------- Services ---------- */
.services{background:var(--bg-soft)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;transition:.3s}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.service-icon{display:grid;place-items:center;width:60px;height:60px;border-radius:14px;background:linear-gradient(135deg,rgba(22,87,255,.12),rgba(255,90,44,.12));color:var(--primary);margin-bottom:20px}
.service-icon svg{width:28px;height:28px}
.service-icon.lg{width:110px;height:110px;border-radius:26px}
.service-icon.lg svg{width:52px;height:52px}
.service-card h3{margin-bottom:10px}
.service-card p{color:var(--muted);margin-bottom:18px;font-size:.96rem}
.service-card ul{display:flex;flex-direction:column;gap:9px;margin-bottom:22px}
.service-card ul li{display:flex;gap:9px;font-size:.92rem;color:var(--body)}
.service-card ul li svg{width:17px;height:17px;flex:none;color:var(--primary);margin-top:3px}
.service-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;font-size:.94rem}
.service-link svg{width:16px;height:16px;transition:.2s}
.service-link:hover svg{transform:translateX(4px)}

/* Service detail (services.php) */
.service-detail-list{display:flex;flex-direction:column;gap:64px}
.service-detail{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}
.service-detail.reverse{direction:rtl}
.service-detail.reverse>*{direction:ltr}
.service-detail-media{display:grid;place-items:center;background:linear-gradient(135deg,var(--bg-soft),#eef3ff);border-radius:var(--radius);padding:60px;min-height:280px}
.service-detail-body p{color:var(--muted);margin-bottom:22px}

/* ---------- Process ---------- */
.process.alt{background:var(--bg-soft)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-item{position:relative;padding-top:8px}
.process-step{display:inline-block;font-size:2.6rem;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--primary);line-height:1;margin-bottom:14px}
.process-item h3{margin-bottom:8px}
.process-item p{color:var(--muted);font-size:.94rem}

/* ---------- Projects ---------- */
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.project-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.3s}
.project-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.project-thumb{aspect-ratio:16/10;overflow:hidden}
.project-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.project-card:hover .project-thumb img{transform:scale(1.05)}
.project-body{padding:22px}
.tag{display:inline-block;background:rgba(22,87,255,.1);color:var(--primary);font-size:.78rem;font-weight:700;padding:5px 12px;border-radius:50px;margin-bottom:12px}
.project-body h3{margin-bottom:10px}
.project-result{display:flex;gap:8px;align-items:flex-start;color:var(--ink);font-weight:600;font-size:.92rem}
.project-result svg{width:18px;height:18px;flex:none;color:#22c55e;margin-top:3px}

/* Case studies (portfolio.php) */
.case-list{display:flex;flex-direction:column;gap:40px}
.case-card{display:grid;grid-template-columns:1fr 1.2fr;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.case-media{min-height:100%}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-body{padding:38px}
.case-body h2{margin-bottom:20px;font-size:1.7rem}
.case-block{margin-bottom:16px}
.case-block h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--primary);margin-bottom:5px}
.case-block p{color:var(--muted)}
.case-result{display:flex;align-items:center;gap:14px;margin-top:22px;padding:18px 20px;background:var(--bg-soft);border-radius:12px}
.case-result svg{width:30px;height:30px;flex:none;color:#fff;background:#22c55e;border-radius:50%;padding:6px}
.case-result span{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.case-result strong{display:block;color:var(--ink);font-size:1.05rem}

/* ---------- Networks (hệ thống website) ---------- */
.network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.network-card{background:var(--bg-soft);border:1px solid var(--line);border-top:4px solid var(--net,var(--primary));border-radius:var(--radius);padding:26px;transition:.3s}
.network-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.network-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.network-badge{font-weight:800;font-size:1.15rem;color:var(--net,var(--ink))}
.network-count{font-size:.78rem;font-weight:700;color:var(--muted);background:var(--bg-soft);padding:4px 12px;border-radius:50px}
.network-sites{display:flex;flex-direction:column;gap:2px}
.network-sites a{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;font-weight:600;font-size:.95rem;color:var(--ink);transition:.2s}
.network-sites a:hover{background:var(--bg-soft);color:var(--net,var(--primary))}
.network-sites .net-dot{width:8px;height:8px;border-radius:50%;background:var(--net,var(--primary));flex:none}
.network-sites a svg{width:15px;height:15px;margin-left:auto;opacity:0;transform:translateX(-4px);transition:.2s}
.network-sites a:hover svg{opacity:1;transform:none}

/* ---------- Testimonials ---------- */
.testimonials{background:var(--bg-soft)}
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.testimonial-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.stars{color:#ffb020;letter-spacing:2px;margin-bottom:14px}
.testimonial-card p{color:var(--body);margin-bottom:20px;font-style:italic}
.testimonial-card footer strong{display:block;color:var(--ink)}
.testimonial-card footer span{font-size:.86rem;color:var(--muted)}

/* ---------- Blog ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.blog-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.3s}
.blog-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.blog-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.blog-thumb img{width:100%;height:100%;object-fit:cover}
.blog-thumb .tag{position:absolute;top:14px;left:14px;margin:0;background:#fff}
.blog-body{padding:22px}
.blog-date{font-size:.82rem;color:var(--muted)}
.blog-body h3{margin:8px 0 10px;font-size:1.12rem}
.blog-body p{color:var(--muted);font-size:.92rem;margin-bottom:16px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:64px 0}
.cta-band-inner{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:8px}
.cta-band p{opacity:.9}

/* ---------- Page hero ---------- */
.page-hero{background:linear-gradient(180deg,var(--bg-soft),#fff);padding:56px 0 46px;border-bottom:1px solid var(--line)}
.page-hero h1{margin-bottom:12px}
.page-hero p{color:var(--muted);max-width:640px}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--primary)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:start}
.contact-form-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-weight:600;font-size:.9rem;color:var(--ink);margin-bottom:7px}
.form-group label span{color:var(--accent)}
.form-group input,.form-group select,.form-group textarea{width:100%;font-family:inherit;font-size:.96rem;padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--radius-sm);background:#fff;transition:.2s;color:var(--ink)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,87,255,.12)}
.form-group .err{display:block;color:var(--accent);font-size:.82rem;margin-top:5px}
.hp{position:absolute;left:-9999px;opacity:0;pointer-events:none}
.alert{display:flex;gap:14px;align-items:flex-start;padding:18px 20px;border-radius:12px;margin-bottom:22px}
.alert svg{width:24px;height:24px;flex:none}
.alert-success{background:#e9f9ee;color:#137a3a}
.alert-success svg{color:#fff;background:#22c55e;border-radius:50%;padding:4px}
.alert-success strong{display:block}
.alert-error{background:#fdecec;color:#c53030}
.contact-info{background:var(--bg-dark);color:#fff;border-radius:var(--radius);padding:34px}
.contact-info h3{color:#fff;margin-bottom:22px}
.contact-info-list{display:flex;flex-direction:column;gap:18px;margin-bottom:24px}
.contact-info-list li{display:flex;flex-direction:column;gap:3px;font-size:.98rem}
.contact-info-list a{color:#fff}
.ci-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:#8a97ba}
.contact-map{border-radius:12px;overflow:hidden}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-dark);color:#c3cbe0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.logo-footer .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:.94rem}
.footer-desc{color:#8a97ba;font-size:.9rem}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.08);color:#fff;font-weight:700;font-size:.82rem;transition:.2s}
.footer-social a:hover{background:var(--primary)}
.footer-col h4{color:#fff;margin-bottom:16px;font-size:1rem}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:.94rem;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:.92rem;margin-bottom:4px}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:.88rem;color:#8a97ba}

/* ---------- Floating call ---------- */
.float-call{position:fixed;right:22px;bottom:22px;z-index:90;display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;box-shadow:0 10px 30px rgba(255,90,44,.5);animation:pulse 2s infinite}
.float-call svg{width:26px;height:26px}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,90,44,.5)}70%{box-shadow:0 0 0 16px rgba(255,90,44,0)}100%{box-shadow:0 0 0 0 rgba(255,90,44,0)}}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:960px){
    .hero-inner{grid-template-columns:1fr;gap:20px}
    .hero-visual{height:300px;order:-1}
    .about-grid,.contact-grid,.service-detail,.case-card{grid-template-columns:1fr!important}
    .service-detail.reverse{direction:ltr}
    .stats-grid{grid-template-columns:1fr 1fr}
    .service-grid,.project-grid,.blog-grid,.testimonial-grid,.process-grid,.network-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
    .main-nav{position:fixed;inset:72px 0 auto 0;flex-direction:column;background:#fff;padding:16px 24px;gap:4px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translateY(-140%);transition:.35s;z-index:99}
    .main-nav.open{transform:translateY(0)}
    .main-nav a{padding:12px}
    .nav-toggle{display:flex}
    .header-phone{display:none}
    .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .nav-toggle.open span:nth-child(2){opacity:0}
    .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .section{padding:60px 0}
    .service-grid,.project-grid,.blog-grid,.testimonial-grid,.process-grid,.network-grid,.stats-grid,.form-row,.check-list.two-col{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .cta-band-inner{flex-direction:column;text-align:center}
    .header-actions .btn-sm{display:none}
}