/*
Theme Name: BACHDAT Corporate Tech v3
Theme URI: https://bachdat.com
Author: BACHDAT LABS
Description: Theme trang chủ cho bachdat.com - 4 cột bài viết, glassmorphism corporate, màu brand Cam #FF6600 + Navy #0E4EA6, Be Vietnam Pro, loading BACHDAT
Version: 3.0
License: GPL v2
Text Domain: bachdat
*/

:root{
  --bg:#f7f8fb;
  --card: rgba(255,255,255,0.72);
  --card-strong: rgba(255,255,255,0.88);
  --border: rgba(14,78,166,0.12);
  --border-strong: rgba(14,78,166,0.22);
  --text:#141a2a;
  --muted:#66708f;
  --navy:#0E4EA6;
  --navy-dark:#0a2e6b;
  --orange:#FF6600;
  --orange-dark:#e65c00;
  --red:#ED1C24;
  --radius:20px;
  --blur:16px;
  --shadow: 0 10px 36px rgba(14,78,166,0.08);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:'Be Vietnam Pro', sans-serif;
  background: var(--bg);
  color: var(--text);
  background-image:
    radial-gradient(900px 600px at -10% -10%, rgba(255,102,0,0.12), transparent 60%),
    radial-gradient(800px 500px at 110% 0%, rgba(14,78,166,0.12), transparent 60%);
  background-attachment:fixed;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}

/* GLASS */
.glass{
  background: var(--card);
  backdrop-filter: blur(var(--blur)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(160%);
  border:1px solid var(--border);
  box-shadow: var(--shadow);
}

/* LOADER */
#bachdat-loader{
  position:fixed; inset:0; z-index:9999; background:#050a18;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  transition: opacity .7s cubic-bezier(.77,0,.175,1), visibility .7s;
}
#bachdat-loader.hidden{opacity:0; visibility:hidden; pointer-events:none}
.loader-grid{
  position:absolute; inset:0;
  background-image: linear-gradient(rgba(255,102,0,0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(14,78,166,0.08) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image: radial-gradient(ellipse at center, black 50%, transparent 85%);
}
.loader-logo{position:relative; font-weight:800; font-size: clamp(36px,8vw,72px); letter-spacing:-2px; line-height:1}
.loader-logo span{background: linear-gradient(100deg, #fff 20%, #FF6600 60%, #ff9a57); -webkit-background-clip:text; -webkit-text-fill-color:transparent}
.loader-logo::after{content:''; position:absolute; left:-10%; bottom:-10px; height:3px; width:120%; background: linear-gradient(90deg, transparent, var(--orange), var(--navy), transparent); animation: scan 1.6s infinite}
@keyframes scan{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.loader-sub{margin-top:18px; font-size:11px; letter-spacing:3px; text-transform:uppercase; color:#8b93b5; display:flex; gap:10px; align-items:center}
.loader-dot{width:7px;height:7px;border-radius:50%; background:var(--orange); box-shadow:0 0 14px var(--orange); animation: blink 1s infinite alternate}
@keyframes blink{from{opacity:.4}to{opacity:1}}
.loader-progress{margin-top:24px; width:200px; height:3px; background: rgba(255,255,255,0.08); border-radius:99px; overflow:hidden}
.loader-bar{height:100%; width:0%; background: linear-gradient(90deg, var(--orange), #ff9a57); animation: loadBar 1.6s cubic-bezier(.77,0,.175,1) forwards}
@keyframes loadBar{to{width:100%}}

/* HEADER */
.site-header{
  position:sticky; top:14px; z-index:50; max-width:1320px; margin:14px auto; width: calc(100% - 24px);
  display:flex; justify-content:space-between; align-items:center; padding:10px 14px 10px 18px; border-radius:999px;
}
.brand{display:flex; align-items:center; gap:12px}
.brand-mark{width:38px;height:38px; border-radius:11px; background: linear-gradient(135deg, var(--navy), #1a6ae0); display:grid; place-items:center; color:#fff; font-weight:800; font-size:15px; box-shadow: 0 6px 18px rgba(14,78,166,0.35)}
.brand-name{font-weight:700; letter-spacing:-0.3px}
.brand-name b{font-weight:800; color: var(--navy)}
.brand-badge{font-size:10px; letter-spacing:1px; text-transform:uppercase; padding:4px 8px; border-radius:99px; background: rgba(255,102,0,0.12); border:1px solid rgba(255,102,0,0.22); color: var(--orange); font-weight:700}
.main-nav ul{display:flex; gap:4px; list-style:none; margin:0; padding:0}
.main-nav a{padding:8px 14px; border-radius:999px; font-size:13.5px; font-weight:500; color:var(--muted); transition:.2s}
.main-nav a:hover{background: rgba(14,78,166,0.08); color: var(--navy)}
.header-cta{display:flex; align-items:center; gap:8px}
.cta-hotline{background: var(--red); color:#fff; padding:9px 14px; border-radius:999px; font-weight:700; font-size:13px; display:flex; gap:6px; align-items:center; box-shadow:0 6px 18px rgba(237,28,36,0.3)}
.cta-hotline:hover{background:#c9141c}

/* FRONT PAGE SECTIONS */
.front-hero{
  max-width:1320px; margin: 8px auto 0; width: calc(100% - 24px);
  display:grid; grid-template-columns: 1.2fr .8fr; gap:20px;
}
@media(max-width:960px){.front-hero{grid-template-columns:1fr}}
.hero-card{border-radius:28px; padding: clamp(22px,4vw,42px); position:relative; overflow:hidden}
.hero-card::before{content:''; position:absolute; inset:0; background: radial-gradient(700px 400px at 0% 0%, rgba(255,102,0,0.14), transparent 60%), radial-gradient(600px 300px at 100% 100%, rgba(14,78,166,0.12), transparent 60%); pointer-events:none}
.hero-kicker{font-size:11px; letter-spacing:2px; text-transform:uppercase; font-weight:700; color: var(--orange); display:flex; gap:8px; align-items:center; margin-bottom:14px}
.hero-kicker::before{content:''; width:28px; height:2px; background: var(--orange); border-radius:99px}
.hero-title{font-size: clamp(28px,4.5vw,48px); line-height:0.98; letter-spacing:-1.8px; font-weight:800; margin:0 0 14px; color:#0d1630}
.hero-title b{color: var(--navy)}
.hero-title span{color: var(--orange)}
.hero-desc{color: var(--muted); font-size:15px; max-width:560px}
.hero-meta{margin-top:18px; display:flex; flex-wrap:wrap; gap:10px}
.meta-pill{padding:8px 12px; border-radius:999px; background: #fff; border:1px solid var(--border); font-size:12.5px; display:flex; gap:6px; align-items:center}
.meta-pill strong{color: var(--navy)}
.hero-side{display:flex; flex-direction:column; gap:14px}
.info-box{border-radius:20px; padding:18px; background: linear-gradient(180deg, #ffffff, #f8faff); border:1px solid var(--border)}
.info-box h4{margin:0 0 8px; font-size:13px; letter-spacing:1px; text-transform:uppercase; color: var(--navy)}
.info-box p, .info-box li{font-size:13.5px; line-height:1.6; color: var(--muted)}
.info-box ul{margin:8px 0 0; padding-left:18px}
.cta-row{display:flex; gap:10px; margin-top:16px}
.btn{padding:12px 18px; border-radius:999px; font-weight:700; font-size:13.5px; border:1px solid transparent; cursor:pointer; transition:.2s; display:inline-flex; align-items:center; gap:8px; justify-content:center}
.btn-primary{background: var(--orange); color:#fff; box-shadow:0 8px 22px rgba(255,102,0,0.3)}
.btn-primary:hover{background: var(--orange-dark); transform:translateY(-1px)}
.btn-secondary{background:#0E4EA6; color:#fff}
.btn-secondary:hover{background:var(--navy-dark)}

/* 5 factors */
.five-grid{display:grid; grid-template-columns: repeat(5,1fr); gap:14px; margin-top:20px}
@media(max-width:1100px){.five-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.five-grid{grid-template-columns:1fr}}
.factor-card{border-radius:18px; padding:18px; background: #fff; border:1px solid var(--border); transition:.25s; position:relative; overflow:hidden}
.factor-card:hover{transform:translateY(-3px); border-color: var(--border-strong); box-shadow: 0 12px 28px rgba(14,78,166,0.08)}
.factor-num{font-size:32px; font-weight:800; letter-spacing:-1px; color: rgba(14,78,166,0.12); line-height:1}
.factor-card h4{margin:6px 0 6px; font-size:14px; font-weight:700; color: var(--navy)}
.factor-card p{font-size:12.8px; color: var(--muted); line-height:1.6; margin:0}

/* Products */
.section-title{display:flex; align-items:center; gap:12px; margin: 36px 0 16px}
.section-title h2{margin:0; font-size:22px; letter-spacing:-0.6px; font-weight:800}
.section-title h2 b{color: var(--navy)}
.section-line{height:1px; flex:1; background: linear-gradient(90deg, var(--border-strong), transparent)}
.posts-grid{display:grid; grid-template-columns: repeat(4,1fr); gap:16px}
@media(max-width:1100px){.posts-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.posts-grid{grid-template-columns:1fr}}
.post-card{border-radius:18px; overflow:hidden; background:#fff; border:1px solid var(--border); transition:.3s; display:flex; flex-direction:column}
.post-card:hover{transform:translateY(-4px); box-shadow:0 16px 32px rgba(14,78,166,0.12); border-color: var(--border-strong)}
.thumb{aspect-ratio:16/11; background:#eef2fb; overflow:hidden; position:relative}
.thumb img{width:100%;height:100%;object-fit:cover; transition:.6s}
.post-card:hover .thumb img{transform:scale(1.06)}
.badge{position:absolute; left:10px; top:10px; font-size:10px; font-weight:800; letter-spacing:.6px; text-transform:uppercase; padding:5px 9px; border-radius:999px; background: var(--navy); color:#fff}
.content{padding:12px 14px 14px; flex:1; display:flex; flex-direction:column}
.content h3{font-size:14.5px; line-height:1.35; font-weight:600; margin:0 0 6px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.excerpt{font-size:12.8px; color:var(--muted); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin-top:auto}
.meta{margin-top:10px; display:flex; justify-content:space-between; font-size:11px; color:var(--muted); border-top:1px solid #eef2fb; padding-top:10px}

/* quote */
.quote-box{margin:28px 0; border-radius:22px; padding:22px 24px; background: linear-gradient(135deg, #0E4EA6, #123a7a); color:#fff; position:relative; overflow:hidden}
.quote-box::before{content:'“'; position:absolute; left:18px; top:-10px; font-size:90px; opacity:.12; font-weight:800}
.quote-box strong{display:block; font-size:18px; color:#FF6600; margin-bottom:6px}
.quote-box em{color:#c7d6f5}