/* coachluka.vn — hệ thống thiết kế dùng chung, khớp bảng màu navy/gold của
   90ngay.coachluka.vn và 121bni.coachluka.vn để đồng bộ thương hiệu cả họ domain. */

:root{
  --navy-950:#050b18;
  --navy-900:#081527;
  --navy-800:#0b1e38;
  --navy-700:#102a4c;
  --navy-600:#173b66;
  --navy-500:#204d82;
  --gold-300:#f3dfa0;
  --gold-400:#e6c264;
  --gold-500:#d4af37;
  --gold-600:#b3892a;
  --ivory:#f7f1e1;
  --ivory-dim:#ede3c8;
  --ink:#0b1e38;
  --text-light:#eef2f8;
  --text-muted:#9fb0c9;
  --text-muted-2:#c7b98a;
  --radius:18px;
  --maxw:1180px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{margin:0;padding:0;}
body{
  background:var(--navy-950);
  color:var(--text-light);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.65;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
section{position:relative;padding:64px 0;scroll-margin-top:88px;}
h1,h2,h3,h4{margin:0 0 .5em 0;line-height:1.2;}
p{margin:0 0 1em 0;}

.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;font-weight:700;
  color:var(--navy-900);background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
  padding:6px 14px;border-radius:999px;margin-bottom:16px;text-transform:uppercase;
}
.section-head{max-width:720px;margin:0 auto 44px;text-align:center;}
.section-title{font-size:32px;font-weight:800;color:#fff;margin-bottom:10px;}
.section-title .accent{color:var(--gold-400);}
.section-sub{font-size:17px;color:var(--text-muted);}

.btn{
  display:inline-block;text-align:center;
  font-weight:800;font-size:16px;padding:15px 28px;border-radius:12px;
  text-decoration:none;cursor:pointer;letter-spacing:.01em;transition:transform .12s ease;
  border:2px solid transparent;
}
.btn-gold{
  background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
  color:var(--navy-950);border-color:var(--navy-950);
  box-shadow:0 6px 0 var(--gold-600), 0 12px 20px rgba(0,0,0,.35);
}
.btn-gold:active{transform:translateY(3px);box-shadow:0 3px 0 var(--gold-600);}
.btn-outline{
  background:transparent;color:var(--text-light);border-color:rgba(212,175,55,.5);
}
.btn-outline:hover{border-color:var(--gold-400);}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}

/* ===== HEADER ===== */
header.site{
  position:sticky;top:0;z-index:500;
  background:rgba(5,11,24,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(212,175,55,.16);
}
.nav-wrap{
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.brand img{width:40px;height:40px;border-radius:50%;object-fit:cover;border:2px solid var(--gold-500);}
.brand-text{line-height:1.15;}
.brand-text .name{font-weight:800;color:#fff;font-size:15px;display:block;}
.brand-text .role{font-size:11px;color:var(--gold-400);letter-spacing:.04em;}
nav.main-nav{display:flex;gap:26px;align-items:center;}
nav.main-nav a{
  font-size:14.5px;font-weight:600;color:var(--text-muted);text-decoration:none;
  padding:6px 0;border-bottom:2px solid transparent;
}
nav.main-nav a:hover,nav.main-nav a.active{color:#fff;border-color:var(--gold-500);}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-cta .btn{padding:11px 20px;font-size:14px;}
.hotline{font-size:13.5px;color:var(--text-muted);white-space:nowrap;}
.hotline strong{color:var(--gold-300);}
#navToggle{display:none;background:none;border:1px solid rgba(212,175,55,.4);border-radius:10px;color:#fff;font-size:20px;padding:6px 12px;cursor:pointer;}

@media (max-width:900px){
  nav.main-nav{
    position:fixed;top:70px;left:0;right:0;bottom:0;background:var(--navy-950);
    flex-direction:column;align-items:flex-start;padding:24px;gap:6px;
    transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;
  }
  nav.main-nav.open{transform:translateX(0);}
  nav.main-nav a{width:100%;padding:14px 6px;border-bottom:1px solid rgba(212,175,55,.1);}
  nav.main-nav a.mobile-cta{
    margin-top:14px;text-align:center;border:none;
    background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
    color:var(--navy-950);font-weight:800;border-radius:12px;padding:14px 6px;
  }
  .nav-cta .hotline{display:none;}
  .nav-cta .btn{display:none;}
  #navToggle{display:block;}
  .brand-text .role{display:none;}
}
@media (max-width:420px){
  .brand-text .name{font-size:13px;}
  .brand img{width:34px;height:34px;}
}

/* ===== HERO ===== */
.hero{padding:56px 0 40px;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero h1{font-size:44px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.hero h1 .accent{color:var(--gold-400);}
.hero .lead{font-size:18px;color:var(--text-muted);margin:18px 0 28px;max-width:560px;}
.hero-photo{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid rgba(212,175,55,.3);aspect-ratio:4/5;
  background:linear-gradient(135deg,var(--navy-700),var(--navy-800));
}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 15%;}
.hero-badge{
  position:absolute;left:18px;bottom:18px;background:rgba(5,11,24,.85);
  border:1px solid rgba(212,175,55,.4);border-radius:14px;padding:12px 16px;
  backdrop-filter:blur(6px);
}
.hero-badge .num{font-size:22px;font-weight:800;color:var(--gold-400);}
.hero-badge .lbl{font-size:12px;color:var(--text-muted);}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero h1{font-size:32px;}
  .hero-photo{max-width:360px;margin:0 auto;}
}

/* ===== STATS BAR ===== */
.stats-bar{background:var(--navy-900);border-top:1px solid rgba(212,175,55,.14);border-bottom:1px solid rgba(212,175,55,.14);padding:36px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;text-align:center;}
.stat-num{font-size:30px;font-weight:800;color:var(--gold-400);}
.stat-lbl{font-size:13px;color:var(--text-muted);margin-top:4px;}
@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2,1fr);}}

/* ===== CARDS ===== */
.card{background:var(--navy-800);border:1px solid rgba(212,175,55,.18);border-radius:var(--radius);padding:26px;}
.card-ivory{background:var(--ivory);color:var(--ink);border-radius:var(--radius);padding:26px;}
.card-ivory h3{color:var(--navy-800);}

/* ===== 6-STEP FRAMEWORK ===== */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step-card{background:var(--navy-800);border:1px solid rgba(212,175,55,.18);border-radius:var(--radius);padding:24px;position:relative;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:50%;background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
  color:var(--navy-950);font-weight:800;font-size:15px;margin-bottom:14px;
}
.step-card h3{font-size:18px;color:#fff;}
.step-card p{font-size:14.5px;color:var(--text-muted);margin-bottom:0;}
@media (max-width:900px){.steps-grid{grid-template-columns:1fr;}}
@media (min-width:901px) and (max-width:1100px){.steps-grid{grid-template-columns:repeat(2,1fr);}}

.outcome-chain{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:24px;}
.outcome-chain .step{background:var(--ivory);color:var(--ink);border-radius:999px;padding:10px 20px;font-weight:700;font-size:14.5px;}
.outcome-chain .arrow{color:var(--gold-400);font-size:20px;}

/* ===== BENEFIT LIST ===== */
ul.clean{list-style:none;padding:0;margin:0;}
ul.clean li{padding-left:30px;position:relative;margin-bottom:14px;font-size:15.5px;color:var(--text-light);}
ul.clean li:before{content:"✓";position:absolute;left:0;top:0;color:var(--gold-400);font-weight:800;}
ul.no-list li:before{content:"⚠";color:#c47b4f;}

/* ===== SERVICES ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.service-card{background:var(--navy-800);border:1px solid rgba(212,175,55,.18);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;}
.service-card .icon{font-size:28px;margin-bottom:14px;}
.service-card h3{color:#fff;font-size:19px;}
.service-card p{color:var(--text-muted);font-size:14.5px;flex-grow:1;}
.service-card a.learn{color:var(--gold-400);font-weight:700;font-size:14px;text-decoration:none;}
@media (max-width:900px){.services-grid{grid-template-columns:1fr;}}

/* ===== TESTIMONIALS ===== */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.testi-card{background:var(--navy-800);border:1px solid rgba(212,175,55,.18);border-radius:var(--radius);padding:22px;}
.testi-quote{font-style:italic;color:var(--text-light);font-size:14.5px;margin-bottom:16px;}
.testi-who{display:flex;align-items:center;gap:12px;}
.testi-who img{width:46px;height:46px;border-radius:50%;object-fit:cover;border:2px solid var(--gold-500);}
.testi-name{font-weight:700;color:#fff;font-size:14px;}
.testi-role{font-size:12.5px;color:var(--gold-400);}
@media (max-width:900px){.testi-grid{grid-template-columns:1fr;}}

/* ===== CTA BANNER ===== */
.cta-banner{
  background:linear-gradient(135deg,var(--navy-800),var(--navy-700));
  border:1px solid rgba(212,175,55,.3);border-radius:24px;padding:48px;text-align:center;
}
.cta-banner h2{color:#fff;font-size:28px;}
.cta-banner p{color:var(--text-muted);font-size:16px;max-width:560px;margin:0 auto 26px;}

/* ===== FAQ ===== */
.faq-item{border-bottom:1px solid rgba(212,175,55,.15);padding:18px 0;}
.faq-item summary{font-weight:700;font-size:16px;color:#fff;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:after{content:"+";color:var(--gold-400);font-size:22px;font-weight:400;}
.faq-item[open] summary:after{content:"–";}
.faq-item p{color:var(--text-muted);margin:14px 0 0;font-size:15px;}

/* ===== FORM ===== */
.form-box{background:var(--ivory);border-radius:var(--radius);padding:30px;color:var(--ink);}
.form-box h3{color:var(--navy-800);margin-bottom:4px;}
.form-box .sub2{font-size:13.5px;color:#5a5138;margin-bottom:20px;}
.form-box label{display:block;font-size:12.5px;font-weight:700;color:#5a5138;margin:14px 0 6px;}
.form-box input{
  width:100%;padding:13px 14px;border-radius:10px;border:1px solid #d8cba4;
  background:#fffdf7;font-size:15px;color:var(--ink);font-family:inherit;
}
.form-note{font-size:12.5px;color:#8a7f5f;margin-top:10px;text-align:center;}
#formMsg{margin-top:14px;font-size:14px;font-weight:700;text-align:center;}

/* ===== GALLERY ===== */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.gallery-grid img{width:100%;height:100%;aspect-ratio:1/1;object-fit:cover;border-radius:14px;border:1px solid rgba(212,175,55,.25);}
@media (max-width:900px){.gallery-grid{grid-template-columns:repeat(2,1fr);}}

/* ===== FOOTER ===== */
footer.site{background:var(--navy-900);border-top:1px solid rgba(212,175,55,.16);padding:52px 0 26px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;margin-bottom:36px;}
.footer-grid h4{color:#fff;font-size:14.5px;margin-bottom:14px;}
.footer-grid p,.footer-grid a{font-size:14px;color:var(--text-muted);text-decoration:none;line-height:2;}
.footer-grid a:hover{color:var(--gold-400);}
.footer-bottom{border-top:1px solid rgba(212,175,55,.12);padding-top:20px;text-align:center;font-size:12.5px;color:var(--text-muted);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}

/* ===== UTIL ===== */
.mt-0{margin-top:0;}
.center{text-align:center;}
.wide-img{width:100%;border-radius:var(--radius);border:1px solid rgba(212,175,55,.25);aspect-ratio:16/9;object-fit:cover;}
.quote-block{
  background:var(--navy-900);border-left:3px solid var(--gold-500);
  border-radius:0 var(--radius) var(--radius) 0;padding:22px 26px;
  font-style:italic;color:var(--text-light);font-size:16px;
}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
@media (max-width:900px){.two-col{grid-template-columns:1fr;}}
.tag-pill{display:inline-flex;gap:8px;align-items:center;background:var(--navy-800);border:1px solid rgba(212,175,55,.25);border-radius:999px;padding:8px 16px;font-size:14px;color:var(--gold-300);margin-bottom:16px;}
.page-hero{padding:60px 0 20px;text-align:center;}
.page-hero h1{font-size:38px;color:#fff;}
.page-hero p{color:var(--text-muted);font-size:17px;max-width:640px;margin:14px auto 0;}

/* ===== MUSIC TOGGLE ===== */
#musicToggle{
  position:fixed;bottom:22px;right:22px;z-index:999;width:52px;height:52px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold-300),var(--gold-500));
  border:2px solid var(--navy-950);box-shadow:0 6px 16px rgba(0,0,0,.4);
  display:flex;align-items:center;justify-content:center;font-size:22px;cursor:pointer;
  transition:transform .15s ease;
}
#musicToggle:hover{transform:scale(1.06);}
@media (max-width:900px){#musicToggle{bottom:16px;right:16px;width:46px;height:46px;font-size:19px;}}