/* ============ HAPPY MOULD VIETNAM — Global styles ============ */
:root{
  --ink:#0F2136;
  --navy:#123A5F;
  --brand:#15507F;
  --brand-soft:#EAF2F8;
  --accent:#E39A2A;
  --accent-dark:#C77F14;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FA;
  --line:#E3EAF1;
  --text:#253645;
  --muted:#6B7C8C;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,33,54,.08);
  --shadow-sm:0 4px 14px rgba(15,33,54,.06);
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Be Vietnam Pro","Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--ink);font-weight:700}
p{margin:0 0 14px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.section{padding:76px 0}
.section.alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.eyebrow{display:inline-block;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.01em}
.section-head p{color:var(--muted);margin-top:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--ink)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark)}
.btn-ghost{border-color:#c9d6e2;color:var(--navy);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- top bar + header ---------- */
.topbar{background:var(--ink);color:#c8d6e4;font-size:13.5px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:40px;flex-wrap:wrap}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:auto;height:52px;object-fit:contain}
nav.main ul{display:flex;gap:2px;align-items:center;flex-wrap:nowrap}
nav.main a{display:block;padding:10px 12px;border-radius:8px;font-size:14.5px;font-weight:500;color:var(--text);white-space:nowrap}
nav.main a:hover{background:var(--brand-soft);color:var(--brand)}
nav.main a.active{color:var(--brand);font-weight:700;position:relative}
nav.main a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);border-radius:2px}
.hdr-cta{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--ink)}
.hero .bg{position:absolute;inset:0;background:url("../img/hero.jpg") center/cover no-repeat;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,26,44,.92) 8%,rgba(10,32,54,.72) 45%,rgba(10,32,54,.35) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:104px;padding-bottom:112px;max-width:var(--max)}
.hero .tag{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.06em;margin-bottom:20px}
.hero h1{color:#fff;font-size:clamp(30px,4.6vw,52px);max-width:820px;letter-spacing:-.015em}
.hero h1 em{color:var(--accent);font-style:normal}
.hero p{max-width:640px;font-size:17.5px;color:#dbe6f0;margin:18px 0 30px}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;gap:0;flex-wrap:nowrap;margin-top:54px;border-top:1px solid rgba(255,255,255,.18);padding-top:26px}
.hero-stats div{flex:1;min-width:0;padding-right:24px;margin-right:24px;border-right:1px solid rgba(255,255,255,.18)}
.hero-stats div:last-child{border-right:0;margin-right:0}
.hero-stats b{display:block;font-size:28px;color:#fff}
.hero-stats span{font-size:13px;color:#a9bccd;line-height:1.45;display:block}

/* ---------- page banner ---------- */
.page-banner{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.page-banner .bg{position:absolute;inset:0;background:url("../img/banner.jpg") center/cover no-repeat;opacity:.35}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,26,44,.9),rgba(9,26,44,.5))}
.page-banner .wrap{position:relative;z-index:2;padding:64px 22px 58px}
.page-banner h1{color:#fff;font-size:clamp(24px,3vw,34px)}
.page-banner .crumb{font-size:13.5px;color:#b8c9d9;margin-top:8px}
.page-banner .crumb a:hover{color:#fff}

/* ---------- cards & grids ---------- */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d3e0ec}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:#eef3f7}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .thumb img{transform:scale(1.05)}
.card .body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.card .body h3{font-size:18px;margin-bottom:8px}
.card .body p{color:var(--muted);font-size:14.5px;flex:1}
.card .meta{font-size:12.5px;color:var(--muted);display:flex;gap:10px;align-items:center;margin-bottom:8px}
.chip{display:inline-block;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px}
.link-more{color:var(--brand);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;margin-top:12px}
.link-more:hover{color:var(--accent)}

/* feature blocks */
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:.25s}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .ico{width:52px;height:52px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:24px;margin-bottom:16px}
.feature h3{font-size:17.5px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14.5px;margin:0}

/* split section */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split .media{position:relative}
.split .media img{border-radius:var(--radius);box-shadow:var(--shadow)}
.split .media .mini{position:absolute;right:-18px;bottom:-24px;width:210px;border-radius:12px;border:5px solid #fff;box-shadow:var(--shadow)}
.tick-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:11px;color:var(--text);font-size:15.5px}
.tick-list li::before{content:"✓";flex:0 0 22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;font-size:13px;display:grid;place-items:center;margin-top:3px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;position:relative}
.step b.num{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;font-size:16px;margin-bottom:14px}
.step h4{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:13.8px;margin:0}

/* stats band */
.band{background:var(--ink);color:#fff;padding:56px 0}
.band .grid{gap:28px}
.band div{text-align:center}
.band b{display:block;font-size:38px;color:var(--accent)}
.band span{color:#a9bccd;font-size:14.5px}

/* logos */
.logos{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.logos .lg{background:#fff;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center;padding:14px;transition:.2s}
.logos .lg:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.logos img{max-height:74px;object-fit:contain}

/* news / video cards */
.card .thumb.video{aspect-ratio:16/9;position:relative;background:#0d1b2a}
.card .thumb.video img{opacity:.82}
.play{position:absolute;inset:0;display:grid;place-items:center}
.play span{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.9);color:var(--navy);display:grid;place-items:center;font-size:20px;padding-left:4px;box-shadow:0 6px 20px rgba(0,0,0,.25)}

/* filter pills */
.filters{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:36px}
.filters button{border:1px solid var(--line);background:#fff;color:var(--text);padding:8px 18px;border-radius:999px;font-size:14px;cursor:pointer;font-family:inherit;transition:.2s}
.filters button:hover{border-color:var(--brand);color:var(--brand)}
.filters button.on{background:var(--brand);border-color:var(--brand);color:#fff}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:40px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.info-card .row{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.info-card .row:last-child{border-bottom:0}
.info-card .row .ico{flex:0 0 44px;height:44px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:19px}
.info-card .row b{display:block;font-size:14px;color:var(--ink)}
.info-card .row p{margin:2px 0 0;color:var(--muted);font-size:15px}
form.hp-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;font-size:15px;color:var(--text);background:#fbfdff;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(21,80,127,.12)}
.field textarea{min-height:120px;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.notice{padding:12px 16px;border-radius:10px;font-size:14.5px;margin-bottom:16px;display:none}
.notice.ok{display:block;background:#EDF9F1;color:#1D7A45;border:1px solid #C9ECD7}
.notice.err{display:block;background:#FDF1F0;color:#B42318;border:1px solid #F6D6D2}

/* footer */
footer.site{background:var(--ink);color:#9fb3c6;font-size:14.5px;padding:60px 0 0;margin-top:0}
footer.site h4{color:#fff;font-size:16px;margin-bottom:16px}
footer.site a:hover{color:#fff}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.f-grid p{color:#8ba1b6}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13.5px;color:#7d93a8}

/* skeleton / empty / error */
.state{padding:60px 20px;text-align:center;color:var(--muted);font-size:15px}
.state .spin{width:26px;height:26px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;margin:0 auto 12px;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* reveal — the animation is a pure-CSS safety net: if the observer never runs
   (slow network, blocked script, old browser) content still becomes visible. */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;
  animation:revealSafe .01s 1.8s forwards}
.reveal.in{opacity:1;transform:none}
@keyframes revealSafe{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;animation:none}
}

/* article */
.article{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:44px 48px}
.article .cover{border-radius:12px;margin:22px 0}
.article h1{font-size:clamp(24px,3vw,32px)}
.article .meta{color:var(--muted);font-size:13.5px;margin:10px 0 4px}
.article .body{margin-top:10px}
.article .body h3{font-size:19px;margin:26px 0 10px}
.article .body p{color:#3a4a58}

/* modal */
.modal{position:fixed;inset:0;background:rgba(9,20,33,.72);display:none;place-items:center;z-index:100;padding:24px}
.modal.open{display:grid}
.modal .box{background:#0d1b2a;border-radius:14px;max-width:900px;width:100%;overflow:hidden;position:relative}
.modal video{width:100%;display:block;max-height:78vh;background:#000}
.modal .close{position:absolute;top:10px;right:12px;background:rgba(0,0,0,.5);color:#fff;border:0;border-radius:50%;width:36px;height:36px;font-size:18px;cursor:pointer}

/* admin */
.admin-shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.admin-side{background:var(--ink);color:#c6d5e3;padding:22px 14px}
.admin-side .as-brand{display:flex;gap:10px;align-items:center;margin-bottom:26px;color:#fff;font-weight:700}
.admin-side a{display:block;padding:10px 12px;border-radius:8px;font-size:14.5px;margin-bottom:4px}
.admin-side a:hover,.admin-side a.on{background:rgba(255,255,255,.1);color:#fff}
.admin-main{background:var(--bg-alt);padding:28px}
.admin-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:22px}
.admin-card h3{margin-bottom:14px;font-size:18px}
table.tbl{width:100%;border-collapse:collapse;font-size:14px}
table.tbl th,table.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
table.tbl th{color:var(--muted);font-weight:600;font-size:13px;background:#f7fafc}
table.tbl img{width:52px;height:40px;object-fit:cover;border-radius:6px}
.tag-new{background:#FDF1F0;color:#B42318;padding:2px 9px;border-radius:999px;font-size:12px}
.tag-done{background:#EDF9F1;color:#1D7A45;padding:2px 9px;border-radius:999px;font-size:12px}
.login-box{max-width:420px;margin:70px auto;background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px;box-shadow:var(--shadow)}
.tabs{display:flex;gap:6px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.tabs button{border:0;background:none;padding:10px 14px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent}
.tabs button.on{color:var(--brand);border-bottom-color:var(--brand)}

/* responsive */
@media(max-width:1024px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .logos{grid-template-columns:repeat(3,1fr)}
  .f-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:36px}
  .contact-grid{grid-template-columns:1fr}
  .admin-shell{grid-template-columns:1fr}
  .admin-side{display:flex;overflow:auto;gap:6px}
  .admin-side .as-brand{margin-bottom:0}
}
@media(max-width:760px){
  nav.main{position:fixed;inset:76px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);display:none;padding:12px 22px 20px}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;align-items:stretch;gap:2px}
  .hdr-cta .btn{display:none}
  .burger{display:block}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .logos{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr}
  .two{grid-template-columns:1fr}
  .hero .wrap{padding-top:70px;padding-bottom:80px}
  .hero-stats{flex-wrap:wrap}
  .hero-stats div{flex:none;padding-right:20px;margin-right:20px}
  .hero-stats b{font-size:24px}
  .article{padding:28px 22px}
  .section{padding:56px 0}
}

/* ===== Timeline - Hành trình phát triển (about) ===== */
.history{background:linear-gradient(160deg,#0F2136 0%,#123A5C 55%,#15507F 100%)}
.history .eyebrow{color:var(--accent)}
.history .section-head h2{color:#fff}
.tl{position:relative;max-width:980px;margin:8px auto 0;padding-top:6px}
.tl::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(227,154,42,.75) 18%,rgba(227,154,42,.75) 82%,rgba(255,255,255,.05))}
.tl-item{position:relative;width:50%;padding:0 46px 44px 0}
.tl-item.rt{margin-left:50%;padding:0 0 44px 46px}
.tl-item:last-child{padding-bottom:8px}
.tl-dot{position:absolute;top:24px;right:-8px;width:16px;height:16px;border-radius:50%;background:var(--accent);
  border:3px solid #0F2136;box-shadow:0 0 0 4px rgba(227,154,42,.25);z-index:1}
.tl-item.rt .tl-dot{right:auto;left:-8px}
.tl-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);
  padding:20px 24px;transition:transform .25s,background .25s}
.tl-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.1)}
.tl-year{display:inline-block;font-size:13.5px;font-weight:800;letter-spacing:.5px;color:#0F2136;
  background:var(--accent);border-radius:999px;padding:4px 14px;margin-bottom:10px}
.tl-card h3{color:#fff;font-size:17.5px;margin:0 0 7px}
.tl-card p{color:#b9c9d9;font-size:14.5px;line-height:1.7;margin:0}
@media (max-width:760px){
  .tl::before{left:9px;transform:none}
  .tl-item,.tl-item.rt{width:100%;margin-left:0;padding:0 0 30px 36px}
  .tl-item:last-child{padding-bottom:4px}
  .tl-dot,.tl-item.rt .tl-dot{left:2px;right:auto;top:20px}
  .tl-card{padding:16px 18px}
}

/* ===== Language switcher (VN / EN / 中文) ===== */
.lang-switch{display:inline-flex;gap:2px;margin-left:14px;padding:3px 4px;background:rgba(255,255,255,.14);border-radius:999px}
.lang-switch .lang-btn{border:0;background:transparent;color:#e8eef4;font:600 12px/1 system-ui,sans-serif;padding:5px 10px;border-radius:999px;cursor:pointer;transition:.2s}
.lang-switch .lang-btn:hover{color:#fff}
.lang-switch .lang-btn.active{background:var(--accent);color:#0F2136}
.topbar .tb-right{display:flex;align-items:center;gap:14px;flex-wrap:wrap}