/* ============================================
   TRIGGER BOXING — SHARED DESIGN SYSTEM
   Dùng chung cho toàn bộ site (index + các trang phụ)
   ============================================ */
:root{
  --bg:#0a0a0b;
  --bg2:#131315;
  --bg3:#1b1b1e;
  --gold:#c9a24b;
  --gold-light:#e8caa0;
  --crimson:#7a1620;
  --crimson-light:#a3222f;
  --white:#f4f1ea;
  --gray:#9c9c9f;
  --line:rgba(244,241,234,0.09);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',Arial,sans-serif;
  background:var(--bg);
  color:var(--white);
  line-height:1.65;
}
h1,h2,h3,h4,.serif{font-family:'Playfair Display',Georgia,serif;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
a{text-decoration:none;color:inherit;}

/* RIBBON */
.ribbon{
  background:linear-gradient(90deg,var(--crimson),var(--crimson-light));
  text-align:center;font-size:13px;font-weight:600;letter-spacing:0.4px;
  padding:9px 16px;color:#fdece7;
}
.ribbon b{color:var(--gold-light);}

/* HEADER + NAV */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,10,11,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand img{height:34px;width:auto;}
.brand-text{font-family:'Playfair Display',serif;font-size:19px;font-weight:700;letter-spacing:1px;text-transform:uppercase;white-space:nowrap;}
.brand-text span{color:var(--gold);}
.menu{display:flex;align-items:center;gap:2px;flex-wrap:wrap;}
.menu-item{position:relative;}
.menu-item > a, .menu-item > span{
  display:block;padding:10px 14px;font-size:12.5px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.5px;color:var(--white);cursor:pointer;
}
.menu-item:hover > a, .menu-item:hover > span{color:var(--gold-light);}
.submenu{
  display:none;position:absolute;top:100%;left:0;background:var(--bg2);
  border:1px solid var(--line);border-radius:4px;min-width:210px;padding:8px 0;
  box-shadow:0 20px 40px rgba(0,0,0,0.4);
}
.menu-item:hover .submenu{display:block;}
.submenu a{display:block;padding:10px 18px;font-size:12.5px;color:var(--gray);white-space:nowrap;}
.submenu a:hover{color:var(--gold-light);background:var(--bg3);}
.nav-cta{flex:0 0 auto;}
.menu-toggle{display:none;}
@media(max-width:1080px){
  .menu{display:none;}
  .menu-toggle{display:block;font-size:22px;background:none;border:none;color:var(--white);cursor:pointer;}
}

.btn{
  display:inline-block;padding:13px 28px;font-weight:700;text-transform:uppercase;
  letter-spacing:0.6px;font-size:13.5px;border-radius:2px;cursor:pointer;
  transition:all .25s ease;border:1px solid transparent;
}
.btn-gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:#1a1408;}
.btn-gold:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-outline{background:transparent;border:1px solid var(--gold);color:var(--gold-light);}
.btn-outline:hover{background:var(--gold);color:#1a1408;}
.btn-header{padding:10px 22px;font-size:12.5px;}

/* PAGE HERO (banner cho các trang phụ) */
.page-hero{
  padding:70px 0 60px;
  background:linear-gradient(135deg,var(--bg3),var(--bg2));
  border-bottom:1px solid var(--line);
  text-align:center;
}
.breadcrumb{font-size:12px;color:var(--gray);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:14px;}
.breadcrumb a{color:var(--gold-light);}
.page-hero h1{font-size:clamp(30px,4.5vw,48px);font-weight:800;}
.page-hero p{color:var(--gray);max-width:620px;margin:16px auto 0;font-size:16px;}

/* GENERIC SECTIONS */
section{padding:80px 0;}
.kicker{
  text-align:center;color:var(--gold);font-size:12.5px;font-weight:700;
  letter-spacing:3px;text-transform:uppercase;margin-bottom:14px;
}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:800;text-align:center;margin-bottom:16px;}
.section-title .accent{color:var(--gold);font-style:italic;}
.section-sub{text-align:center;color:var(--gray);max-width:640px;margin:0 auto 56px;font-size:16px;}
.divider{width:60px;height:2px;background:var(--gold);margin:0 auto 40px;}

/* PAIN */
.pain{background:var(--bg2);}
.pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;}
.pain-card{background:var(--bg);border:1px solid var(--line);padding:26px 24px;border-radius:4px;position:relative;}
.pain-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,var(--crimson),transparent);}
.pain-card h3{font-size:16.5px;margin-bottom:9px;font-family:'Inter';font-weight:700;}
.pain-card p{color:var(--gray);font-size:14px;}

/* REASON */
.reason{background:linear-gradient(135deg,var(--bg3),var(--bg2));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.reason-inner{max-width:780px;margin:0 auto;text-align:center;}
.reason-quote{font-family:'Playfair Display',serif;font-style:italic;font-weight:600;font-size:clamp(20px,2.6vw,28px);line-height:1.5;color:var(--gold-light);margin-bottom:26px;}
.reason p{color:#d4d1c9;font-size:16px;max-width:680px;margin:0 auto 14px;}

/* BIO / FOUNDER LAYOUT (dùng cho Trịnh Sư Phụ + Solution section) */
.founder{display:grid;grid-template-columns:0.85fr 1.15fr;gap:60px;align-items:center;}
@media(max-width:860px){.founder{grid-template-columns:1fr;}}
.founder-img{border-radius:6px;overflow:hidden;border:1px solid var(--line);}
.founder-badge{
  display:inline-block;background:var(--crimson);color:#fce6e6;font-size:11.5px;font-weight:700;
  letter-spacing:1px;text-transform:uppercase;padding:6px 14px;border-radius:2px;margin-bottom:16px;
}
.founder h2{font-size:30px;margin-bottom:18px;}
.founder ul{list-style:none;margin-top:18px;}
.founder li{padding-left:26px;position:relative;margin-bottom:12px;color:#d4d1c9;font-size:15px;}
.founder li::before{content:"—";position:absolute;left:0;color:var(--gold);}
.founder-text{color:#d4d1c9;font-size:15.5px;margin-bottom:14px;}

/* CLASSES / CARD GRID (dùng cho Lớp Tập) */
.classes{background:var(--bg2);}
.class-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media(max-width:900px){.class-grid{grid-template-columns:repeat(2,1fr);}}
.class-card{position:relative;border-radius:6px;overflow:hidden;height:260px;border:1px solid var(--line);}
.class-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.class-card:hover img{transform:scale(1.06);}
.class-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(10,10,11,0.92) 100%);}
.class-label{position:absolute;bottom:0;left:0;right:0;padding:18px;z-index:2;}
.class-label h4{font-size:16px;font-family:'Inter';font-weight:700;}
.class-label span{font-size:12px;color:var(--gold-light);}

/* CREDENTIALS STRIP */
.credentials{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cred-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
@media(max-width:800px){.cred-grid{grid-template-columns:repeat(2,1fr);}}
.cred-item{text-align:center;padding:20px;border-right:1px solid var(--line);}
.cred-item:last-child{border-right:none;}
.cred-item .num{font-family:'Playfair Display',serif;font-size:30px;color:var(--gold);font-weight:700;}
.cred-item .lbl{font-size:12.5px;color:var(--gray);margin-top:4px;}

/* ROSTER GRID (Coach / Fighter) */
.coach-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
@media(max-width:900px){.coach-grid{grid-template-columns:repeat(3,1fr);}}
@media(max-width:560px){.coach-grid{grid-template-columns:repeat(2,1fr);}}
.coach-card{text-align:center;}
.coach-img{border-radius:6px;overflow:hidden;aspect-ratio:1/1;border:1px solid var(--line);margin-bottom:10px;position:relative;}
.coach-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.coach-card:hover .coach-img img{transform:scale(1.06);}
.coach-card h5{font-size:13.5px;font-family:'Inter';font-weight:700;}
.coach-card span{font-size:11.5px;color:var(--gold-light);}
.coach-link{position:absolute;inset:0;z-index:2;}

/* SIMPLE IMAGE GALLERY (dùng cho các trang Hình Ảnh) */
.gallery-simple{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media(max-width:760px){.gallery-simple{grid-template-columns:repeat(2,1fr);}}
.gallery-simple img{width:100%;height:280px;object-fit:cover;border-radius:6px;border:1px solid var(--line);}
.gallery-simple figure{margin:0;}
.gallery-simple figcaption{text-align:center;font-size:13px;color:var(--gold-light);margin-top:8px;font-family:'Playfair Display',serif;}

/* BRANCH GRID */
.branches{background:var(--bg2);}
.branch-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media(max-width:760px){.branch-grid{grid-template-columns:repeat(2,1fr);}}
.branch-card{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:16px;}
.branch-card img{width:100%;height:190px;object-fit:cover;border-radius:6px;border:1px solid var(--line);margin-bottom:12px;}
.branch-card h4{font-size:15px;font-family:'Inter';font-weight:700;margin-bottom:4px;}
.branch-card p{font-size:12.5px;color:var(--gray);margin-bottom:10px;}
.branch-card .btn-outline{font-size:11px;padding:8px 14px;}

/* TIER / RULES CARDS (Giải Đấu Nội Bộ) */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media(max-width:900px){.tier-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}}
.tier-card{background:var(--bg2);border:1px solid var(--line);border-radius:6px;overflow:hidden;}
.tier-card img{width:100%;height:220px;object-fit:cover;}
.tier-card .tier-body{padding:24px;}
.tier-card h3{font-size:18px;color:var(--gold-light);margin-bottom:12px;letter-spacing:1px;text-transform:uppercase;}
.tier-card ul{list-style:none;}
.tier-card li{font-size:14px;color:#d4d1c9;margin-bottom:10px;padding-left:20px;position:relative;}
.tier-card li::before{content:"—";position:absolute;left:0;color:var(--gold);}

/* STORY LAYOUT (Trigger Promotion) */
.story{max-width:760px;margin:0 auto;}
.story h3{font-size:22px;margin:30px 0 12px;color:var(--gold-light);}
.story p{color:#d4d1c9;font-size:15.5px;margin-bottom:14px;}
.story ul{list-style:none;margin:14px 0;}
.story li{padding-left:22px;position:relative;margin-bottom:10px;color:#d4d1c9;font-size:15px;}
.story li::before{content:"—";position:absolute;left:0;color:var(--gold);}
.story img{border-radius:6px;margin:24px 0;border:1px solid var(--line);}
.story-contact{background:var(--bg2);border:1px solid var(--line);border-radius:6px;padding:24px;margin-top:30px;}
.story-contact p{margin-bottom:6px;font-size:14.5px;}
.story-contact b{color:var(--gold-light);}

/* RECRUIT / CENTERED CTA PAGE */
.recruit-box{max-width:640px;margin:0 auto;text-align:center;}
.recruit-box img{border-radius:8px;margin-bottom:30px;border:1px solid var(--line);}
.recruit-box p{color:#d4d1c9;font-size:16px;margin-bottom:28px;}

/* SCHEDULE PAGE */
.schedule-box{max-width:640px;margin:0 auto;text-align:center;}
.schedule-box img{border-radius:8px;border:1px solid var(--line);}

/* TESTIMONIALS */
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;}
.testi-card{background:var(--bg2);border:1px solid var(--line);padding:28px;border-radius:6px;}
.testi-card .stars{color:var(--gold);margin-bottom:14px;letter-spacing:2px;font-size:14px;}
.testi-card p{color:#d4d1c9;font-size:14.5px;margin-bottom:18px;font-style:italic;}
.testi-person{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:14px;}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--bg3);flex:0 0 auto;}
.testi-person b{display:block;font-size:13.5px;}
.testi-person span{color:var(--gray);font-size:12px;}
.testi-flag{text-align:center;font-size:12px;color:var(--gray);margin-top:24px;}

/* PRICING */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
@media(max-width:900px){.pricing-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}}
.price-card{background:var(--bg2);border:1px solid var(--line);border-radius:6px;padding:34px 28px;display:flex;flex-direction:column;}
.price-card.featured{border:1px solid var(--gold);position:relative;background:linear-gradient(180deg,var(--bg3),var(--bg2));box-shadow:0 20px 50px rgba(201,162,75,0.08);}
.badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--gold);color:#1a1408;font-size:11.5px;font-weight:800;padding:6px 18px;border-radius:2px;text-transform:uppercase;letter-spacing:1px;}
.price-name{font-size:13px;color:var(--gray);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:12px;}
.price-value{font-family:'Playfair Display',serif;font-size:36px;font-weight:700;margin-bottom:4px;}
.price-value span{font-size:14px;color:var(--gray);font-weight:400;font-family:'Inter';}
.price-note{color:var(--gray);font-size:12.5px;margin-bottom:24px;}
.price-feat{list-style:none;margin-bottom:28px;flex:1;}
.price-feat li{font-size:14px;color:#d4d1c9;margin-bottom:13px;padding-left:24px;position:relative;}
.price-feat li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:900;}
.bonus-tag{background:rgba(201,162,75,0.1);border:1px dashed var(--gold);border-radius:4px;padding:10px 12px;font-size:12.5px;color:var(--gold-light);margin-bottom:20px;}

/* FAQ */
.faq{background:var(--bg2);max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);padding:24px 0;}
.faq-item h4{font-size:16px;margin-bottom:9px;display:flex;gap:10px;font-family:'Inter';font-weight:700;}
.faq-item h4 .q{color:var(--gold);font-family:'Playfair Display',serif;}
.faq-item p{color:var(--gray);font-size:14.5px;padding-left:26px;}

/* URGENCY */
.urgency{background:linear-gradient(135deg,var(--crimson),#4a0d13);text-align:center;}
.urgency h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:16px;}
.urgency p{color:#f2d9d9;max-width:560px;margin:0 auto 30px;font-size:15.5px;}

/* LEAD FORM / CTA */
.lead{background:var(--bg);border-top:1px solid var(--line);}
.lead-box{max-width:660px;margin:0 auto;background:var(--bg2);border-radius:8px;padding:44px;border:1px solid var(--line);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:12.5px;color:var(--gray);margin-bottom:7px;text-transform:uppercase;letter-spacing:0.6px;}
.form-row input,.form-row select{width:100%;padding:13px 14px;background:var(--bg);border:1px solid var(--line);border-radius:4px;color:var(--white);font-size:15px;font-family:'Inter';}
.form-row input:focus,.form-row select:focus{outline:none;border-color:var(--gold);}
.lead-cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px;}
.lead-cta-row .btn{flex:1;text-align:center;min-width:180px;}
.lead-note{font-size:12px;color:var(--gray);text-align:center;margin-top:18px;}

/* FOOTER */
footer{padding:56px 0 30px;border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1.2fr 2fr 1fr;gap:40px;margin-bottom:40px;}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr;gap:30px;}}
.footer-brand .brand-text{font-size:20px;margin-bottom:12px;}
.footer-brand p{color:var(--gray);font-size:13px;}
.footer-col h5{font-size:12.5px;text-transform:uppercase;letter-spacing:1px;color:var(--gold-light);margin-bottom:14px;}
.branch-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.branch-list div{font-size:13px;color:var(--gray);}
.branch-list b{color:var(--white);display:block;font-size:13.5px;margin-bottom:2px;}
.footer-col p{font-size:13px;color:var(--gray);margin-bottom:8px;}
.social-row{display:flex;gap:12px;margin-top:14px;}
.social-row a{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--gray);}
.footer-bottom{text-align:center;color:var(--gray);font-size:12.5px;border-top:1px solid var(--line);padding-top:24px;}

/* STICKY MOBILE CTA */
.sticky-cta{display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;background:var(--bg2);border-top:1px solid var(--line);padding:12px 16px;gap:10px;}
@media(max-width:700px){
  .sticky-cta{display:flex;}
  body{padding-bottom:70px;}
}
.sticky-cta .btn{flex:1;text-align:center;padding:12px 10px;font-size:12.5px;}

/* HERO (trang chủ) */
.hero{position:relative;min-height:94vh;display:flex;align-items:center;background-size:cover;background-position:center;}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(10,10,11,0.55) 0%, rgba(10,10,11,0.97) 100%),linear-gradient(90deg, rgba(10,10,11,0.85) 0%, rgba(10,10,11,0.35) 60%);}
.hero-content{position:relative;z-index:1;padding:90px 0;}
.eyebrow{color:var(--gold-light);font-weight:700;letter-spacing:3px;text-transform:uppercase;font-size:12.5px;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--gold);display:inline-block;}
h1{font-size:clamp(34px,5.2vw,60px);font-weight:800;line-height:1.15;max-width:760px;}
h1 .accent{color:var(--gold);font-style:italic;}
.hero-sub{font-size:17.5px;color:#d8d5cd;max-width:600px;margin:22px 0 34px;}
.hero-cta-row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px;}
.trust-row{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);max-width:760px;}
.trust-item{font-size:13px;color:var(--gray);padding:18px 28px 0 0;flex:1;min-width:180px;}
.trust-item b{color:var(--gold-light);font-size:14.5px;display:block;font-family:'Playfair Display',serif;margin-bottom:2px;}