/* ═══════════════════════════════════════════════
   AMY TRỊNH — TRADING EXPERT & MENTOR
   Stylesheet bám Design System v1.0 (đã duyệt)
═══════════════════════════════════════════════ */

:root{
  --navy:#0B1B2B;
  --navy-2:#13293D;
  --gold:#C9A24B;
  --gold-soft:#E3CC92;
  --amber:#E0904B;
  --cream:#FAF6EF;
  --cream-2:#F1EADD;
  --emerald:#2EA77D;
  --crimson:#C0392B;
  --ink:#14110D;
  --muted:#6E665A;
  --line:#E5DCCB;

  --ff-display:'Playfair Display', Georgia, serif;
  --ff-body:'Be Vietnam Pro', system-ui, sans-serif;
  --ff-num:'Space Grotesk', monospace;

  --maxw:1160px;
  --radius:16px;
  --shadow:0 18px 50px rgba(11,27,43,.10);
  --shadow-sm:0 6px 20px rgba(11,27,43,.08);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--ff-body);
  font-size:17px;
  line-height:1.7;
  color:var(--ink);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

h1,h2,h3,h4{font-family:var(--ff-display);font-weight:700;line-height:1.18;color:var(--ink)}
h1{font-size:clamp(34px,5vw,52px)}
h2{font-size:clamp(28px,3.6vw,38px)}
h3{font-size:24px}

.eyebrow{
  display:inline-block;font-family:var(--ff-num);font-size:13px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--amber);margin-bottom:14px;
}
.eyebrow--light{color:var(--gold-soft)}
.hl{color:var(--gold)}

/* ─── Buttons ─── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:600;font-size:16px;
  cursor:pointer;border:2px solid transparent;transition:.22s ease;white-space:nowrap;
}
.btn-gold{background:var(--gold);color:var(--navy);box-shadow:0 10px 26px rgba(201,162,75,.35)}
.btn-gold:hover{background:var(--gold-soft);transform:translateY(-2px)}
.btn-ghost{border-color:var(--navy);color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:var(--cream)}
.btn-ghost--dark{border-color:var(--gold);color:var(--gold)}
.btn-ghost--dark:hover{background:var(--gold);color:var(--navy)}
.btn-block{width:100%}

/* ─── Header ─── */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(250,246,239,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:.25s;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  font-family:var(--ff-num);font-weight:700;font-size:15px;color:var(--gold);
  background:var(--navy);border:1.5px solid var(--gold);letter-spacing:.04em;
}
.logo-text{font-family:var(--ff-display);font-weight:700;font-size:21px;color:var(--navy)}
.logo-accent{color:var(--gold)}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:15px;font-weight:500;color:var(--navy-2);transition:.2s}
.nav a:hover{color:var(--amber)}
.nav-cta{padding:9px 20px;border:1.5px solid var(--gold);border-radius:999px;color:var(--navy)!important}
.nav-cta:hover{background:var(--gold)}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--navy);cursor:pointer}

/* ─── Hero ─── */
.hero{
  background:radial-gradient(1100px 520px at 80% -10%, rgba(201,162,75,.12), transparent 60%), var(--cream);
  padding:72px 0 84px;overflow:hidden;
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.hero-copy h1{margin:6px 0 20px}
.lead{font-size:19px;color:var(--muted);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero-sign{font-family:var(--ff-num);font-size:13px;letter-spacing:.06em;color:var(--navy-2);opacity:.75}

.hero-visual{position:relative}
.portrait-frame{
  border-radius:28px;overflow:hidden;background:linear-gradient(160deg,var(--navy),var(--navy-2));
  aspect-ratio:4/5;box-shadow:var(--shadow);border:1px solid rgba(201,162,75,.25);
}
.portrait-img{width:100%;height:100%;object-fit:cover;object-position:center top}
.portrait-placeholder{
  width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;color:var(--gold-soft);text-align:center;font-family:var(--ff-display);font-size:22px;
  background:repeating-linear-gradient(45deg,rgba(201,162,75,.05) 0 14px,transparent 14px 28px);
}
.portrait-placeholder small{font-family:var(--ff-num);font-size:11px;opacity:.6;letter-spacing:.05em}
.float-card{
  position:absolute;background:var(--cream);border-radius:14px;padding:13px 18px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;border:1px solid var(--line);
}
.float-card--top{top:24px;left:-26px}
.float-card--bottom{bottom:30px;right:-22px}
.fc-label{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-family:var(--ff-num)}
.fc-value{font-family:var(--ff-display);font-weight:700;color:var(--navy)}
.fc-value.up{color:var(--emerald)}

/* ─── Trust strip ─── */
.trust-strip{background:var(--navy);color:var(--cream)}
.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 24px}
.trust-item{display:flex;flex-direction:column;gap:3px;border-left:2px solid var(--gold);padding-left:16px}
.trust-item strong{font-family:var(--ff-display);font-size:17px;color:var(--gold-soft)}
.trust-item span{font-size:13.5px;color:rgba(250,246,239,.72)}

/* ─── Sections ─── */
.section{padding:84px 0}
.section--cream{background:var(--cream-2)}
.section--dark{background:linear-gradient(165deg,var(--navy),var(--navy-2));color:var(--cream)}
.section-head{max-width:680px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-sub{color:var(--muted);font-size:18px;margin-top:12px}
.on-dark{color:var(--cream)}
.on-dark-sub{color:rgba(250,246,239,.74)}
.center{text-align:center}

/* ─── About ─── */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:54px;align-items:center}
.about-quote{
  position:relative;background:linear-gradient(165deg,var(--navy),var(--navy-2));color:var(--cream);
  border-radius:24px;padding:48px 40px 36px;box-shadow:var(--shadow);
  border:1px solid rgba(201,162,75,.28);overflow:hidden;
}
.about-quote::before{
  content:"";position:absolute;inset:0;background:repeating-linear-gradient(45deg,rgba(201,162,75,.05) 0 16px,transparent 16px 32px);pointer-events:none;
}
.aq-mark{
  position:absolute;top:6px;left:26px;font-family:var(--ff-display);font-size:96px;line-height:1;
  color:var(--gold);opacity:.5;
}
.about-quote p{
  position:relative;font-family:var(--ff-display);font-size:23px;line-height:1.5;
  color:var(--cream);margin:24px 0 26px;font-style:italic;
}
.about-quote p strong{color:var(--gold-soft)}
.about-quote footer{position:relative;display:flex;flex-direction:column;gap:2px;border-top:1px solid rgba(201,162,75,.25);padding-top:18px}
.aq-name{font-family:var(--ff-display);font-weight:700;font-size:20px;color:var(--gold)}
.aq-title{font-family:var(--ff-num);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:rgba(250,246,239,.66)}
.about-copy p{color:var(--muted);margin-top:16px}
.about-copy h2{margin-top:6px}
.about-points{list-style:none;margin-top:24px;display:grid;gap:12px}
.about-points li{position:relative;padding-left:30px;font-weight:500;color:var(--ink)}
.about-points li::before{content:"▲";position:absolute;left:0;color:var(--gold);font-size:13px;top:4px}

/* ─── Method ─── */
.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.method-card{
  background:rgba(255,255,255,.04);border:1px solid rgba(201,162,75,.22);
  border-radius:var(--radius);padding:32px 28px;transition:.25s;
}
.method-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.method-num{font-family:var(--ff-num);font-size:14px;color:var(--gold);letter-spacing:.1em}
.method-card h3{color:var(--gold-soft);margin:14px 0 10px}
.method-card p{color:rgba(250,246,239,.74);font-size:15.5px}

/* ─── Services ─── */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:22px}
.service-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 28px;display:flex;flex-direction:column;gap:10px;box-shadow:var(--shadow-sm);transition:.25s;
}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.service-card--feature{border-color:var(--gold);box-shadow:0 20px 50px rgba(201,162,75,.2)}
.ribbon{
  position:absolute;top:-12px;right:22px;background:var(--gold);color:var(--navy);
  font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px;letter-spacing:.02em;
}
.service-icon{font-size:32px}
.service-card p{color:var(--muted);font-size:15.5px;flex-grow:1}
.service-for{font-family:var(--ff-num);font-size:12.5px;letter-spacing:.05em;color:var(--amber);text-transform:uppercase}
.service-link{font-weight:600;color:var(--navy);margin-top:6px}
.service-link:hover{color:var(--gold)}
.services-note{text-align:center;font-size:14px;color:var(--muted)}

/* ─── Blog ─── */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:36px}
.blog-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);transition:.25s;min-height:170px;
}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.blog-tag{
  display:inline-block;font-family:var(--ff-num);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--amber);background:rgba(224,144,75,.12);padding:4px 10px;border-radius:6px;margin-bottom:14px;
}
.blog-card{display:flex;flex-direction:column;color:inherit}
.blog-card h3{font-size:20px;margin-bottom:8px;color:var(--navy)}
.blog-card p{color:var(--muted);font-size:15px;flex-grow:1}
.blog-read{margin-top:12px;font-family:var(--ff-num);font-size:14px;font-weight:600;color:var(--gold)}
.blog-card:hover h3{color:var(--amber)}

/* ─── Contact ─── */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.contact-list{list-style:none;margin-top:24px;display:grid;gap:12px}
.contact-list a{color:var(--gold-soft);font-weight:600}
.contact-list em{color:rgba(250,246,239,.5);font-style:normal;font-size:13px}
.contact-form{background:var(--cream);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.contact-form label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin-bottom:16px}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;margin-top:7px;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;
  font-family:var(--ff-body);font-size:15px;background:#fff;color:var(--ink);font-weight:400;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(201,162,75,.15)
}
.form-note{display:block;text-align:center;color:var(--muted);font-size:12.5px;margin-top:12px;font-weight:400}

/* ─── Footer ─── */
.site-footer{background:var(--ink);color:rgba(250,246,239,.8)}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;padding:56px 24px 30px}
.footer-brand .logo-text{color:var(--cream);font-size:24px}
.footer-brand p{margin-top:14px;max-width:380px;font-size:14.5px;color:rgba(250,246,239,.6)}
.footer-cols{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.footer-cols h4{font-family:var(--ff-num);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.footer-cols a{display:block;font-size:14.5px;padding:5px 0;color:rgba(250,246,239,.72)}
.footer-cols a:hover{color:var(--gold-soft)}
.risk-disclaimer{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;padding-bottom:6px}
.risk-disclaimer p{font-size:12.5px;line-height:1.65;color:rgba(250,246,239,.5)}
.risk-disclaimer strong{color:rgba(250,246,239,.72)}
.footer-bottom{display:flex;justify-content:space-between;padding:18px 24px 34px;font-size:13px;color:rgba(250,246,239,.45);font-family:var(--ff-num)}

/* ─── Floating CTA ─── */
.floating-cta{
  position:fixed;right:20px;bottom:20px;z-index:60;background:var(--gold);color:var(--navy);
  font-weight:700;padding:13px 20px;border-radius:999px;box-shadow:0 12px 30px rgba(201,162,75,.45);
  font-size:15px;transition:.22s;
}
.floating-cta:hover{background:var(--gold-soft);transform:translateY(-2px)}

/* ─── Responsive ─── */
@media (max-width:920px){
  .hero-inner,.about-grid,.contact-grid{grid-template-columns:1fr;gap:38px}
  .hero-visual{max-width:420px;margin:0 auto}
  .about-visual{max-width:360px;margin:0 auto}
  .trust-inner{grid-template-columns:1fr 1fr}
  .method-grid,.service-grid,.blog-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:30px}
}
@media (max-width:640px){
  .nav{
    position:absolute;top:72px;left:0;right:0;background:var(--cream);flex-direction:column;
    align-items:stretch;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-sm);display:none;
  }
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-cta{text-align:center;margin-top:10px;border-bottom:none!important}
  .nav-toggle{display:block}
  .trust-inner{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px;text-align:center}
  .float-card--top{left:0}
  .float-card--bottom{right:0}
}