/* ============================================
   COPYRIGHTS HUB VIETNAM — Shared Stylesheet
   ============================================ */
:root{
  --amber:#F5A623;
  --amber-bright:#FFB938;
  --amber-deep:#E08600;
  --ink:#0A0A0C;
  --ink-soft:#121216;
  --ink-card:#16161C;
  --ink-card-2:#1C1C24;
  --line:rgba(255,255,255,.08);
  --line-amber:rgba(245,166,35,.25);
  --txt:#F4F4F6;
  --txt-dim:#A0A0AC;
  --txt-faint:#6A6A76;
  --display:'Sora',sans-serif;
  --body:'Be Vietnam Pro',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--ink);color:var(--txt);overflow-x:hidden;line-height:1.6;-webkit-font-smoothing:antialiased}
::selection{background:var(--amber);color:var(--ink)}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* Ambient background */
.bg-noise{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.bg-glow{position:fixed;inset:0;z-index:0;pointer-events:none}
.bg-glow::before{content:'';position:absolute;top:-15%;right:-10%;width:55vw;height:55vw;background:radial-gradient(circle,rgba(245,166,35,.14),transparent 65%);filter:blur(40px)}
.bg-glow::after{content:'';position:absolute;bottom:5%;left:-15%;width:45vw;height:45vw;background:radial-gradient(circle,rgba(245,166,35,.07),transparent 65%);filter:blur(40px)}

.wrap{max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:2}
section{position:relative;z-index:2}

/* ===== Nav ===== */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:18px 0;transition:all .4s ease;border-bottom:1px solid transparent}
nav.scrolled,nav.solid{background:rgba(10,10,12,.82);backdrop-filter:blur(20px);border-bottom:1px solid var(--line);padding:12px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:38px;height:38px;flex-shrink:0}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt b{font-family:var(--display);font-weight:800;font-size:15px;letter-spacing:.02em;color:var(--amber)}
.brand-txt span{font-size:9px;letter-spacing:.22em;color:var(--txt-faint);text-transform:uppercase}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--txt-dim);font-weight:500;transition:color .25s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--txt)}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--amber);transition:width .3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{display:flex;gap:12px;align-items:center}
.btn{font-family:var(--body);font-weight:600;font-size:14px;cursor:pointer;border:none;border-radius:100px;padding:11px 22px;transition:all .25s;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:var(--amber-bright);transform:translateY(-2px);box-shadow:0 10px 30px rgba(245,166,35,.3)}
.btn-dark{background:var(--ink);color:var(--txt)}
.btn-dark:hover{background:#000;transform:translateY(-2px);box-shadow:0 14px 36px rgba(0,0,0,.3)}
.btn-lg{padding:15px 32px;font-size:15.5px}

/* ===== Section headers ===== */
.sec-head{max-width:680px;margin-bottom:56px}
.sec-head.center{margin:0 auto 56px;text-align:center}
.sec-tag{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);font-weight:600;margin-bottom:16px;display:block}
.sec-head h2{font-family:var(--display);font-weight:800;font-size:clamp(28px,3.6vw,44px);line-height:1.1;letter-spacing:-.015em;margin-bottom:18px}
.sec-head p{font-size:17px;color:var(--txt-dim);line-height:1.7}

/* ===== Page hero (inner pages) ===== */
.page-hero{padding:160px 0 60px;text-align:center}
.page-hero .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--amber);margin-bottom:24px;padding:7px 16px;border:1px solid var(--line-amber);border-radius:100px;background:rgba(245,166,35,.06)}
.page-hero h1{font-family:var(--display);font-weight:800;font-size:clamp(34px,5vw,58px);line-height:1.05;letter-spacing:-.02em;margin-bottom:20px}
.page-hero h1 .hl{color:var(--amber)}
.page-hero p{font-size:18px;color:var(--txt-dim);max-width:620px;margin:0 auto;line-height:1.7}

/* ===== Footer ===== */
footer{padding:70px 0 40px;border-top:1px solid var(--line);position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.foot-brand p{font-size:14px;color:var(--txt-faint);max-width:280px;line-height:1.6}
.foot-col h5{font-family:var(--display);font-size:14px;font-weight:700;margin-bottom:18px;color:var(--txt)}
.foot-col a{display:block;font-size:14px;color:var(--txt-faint);margin-bottom:12px;transition:color .2s}
.foot-col a:hover{color:var(--amber)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:30px;border-top:1px solid var(--line);font-size:13px;color:var(--txt-faint);flex-wrap:wrap;gap:16px}

/* Reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:980px){.nav-links{display:none}.foot-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media(max-width:560px){.wrap{padding:0 20px}.nav-cta .btn-ghost{display:none}}
.btn.btn-ghost{
   display: none;
}