/* ===== HERO ===== */
.hero{
  min-height:100vh;
  background:linear-gradient(145deg,var(--gb) 0%,#e8f8f0 40%,#d5f2e5 100%);
  display:flex;align-items:center;
  padding:100px 80px 60px;
  position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-100px;right:-100px;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(29,158,117,.12) 0%,transparent 70%);
  border-radius:50%;pointer-events:none;
}
.hero::after{
  content:'';position:absolute;bottom:-80px;left:10%;
  width:300px;height:300px;
  background:radial-gradient(circle,rgba(15,110,86,.08) 0%,transparent 70%);
  border-radius:50%;pointer-events:none;
}
.hero-content{max-width:560px;z-index:2;animation:fadeUp .8s ease both}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--gp);border:1px solid var(--ta);
  padding:6px 14px;border-radius:20px;font-size:12px;
  color:var(--gd);font-weight:600;margin-bottom:24px;
}
.hero h1{font-family:'Playfair Display',serif;font-size:52px;line-height:1.15;
  font-weight:700;color:var(--gd);margin-bottom:14px}
.hero h1 span{color:var(--gm)}
.hero-slogan{font-size:17px;color:var(--tm);font-style:italic;margin-bottom:20px}
.hero p{font-size:16px;line-height:1.8;color:#4a7060;margin-bottom:36px;max-width:480px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--gd);color:#fff;padding:13px 26px;border-radius:10px;
  font-size:15px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-block}
.btn-primary:hover{background:var(--gm);transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,110,86,.25)}
.btn-outline{border:2px solid var(--gd);color:var(--gd);padding:13px 26px;border-radius:10px;
  font-size:15px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-block}
.btn-outline:hover{background:var(--gd);color:#fff}
.hero-stats{display:flex;gap:32px;margin-top:44px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column}
.stat-num{font-size:26px;font-weight:700;color:var(--gd)}
.stat-lbl{font-size:12px;color:var(--tm)}
.hero-visual{
  position:absolute;right:80px;top:50%;transform:translateY(-50%);
  width:400px;height:400px;z-index:1;animation:fadeUp .8s .4s ease both;
}

/* ===== SECTION ===== */
.section{padding:72px 80px}
.section-alt{background:var(--gb)}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{
  display:inline-block;background:var(--gp);color:var(--gd);
  font-size:12px;font-weight:600;padding:5px 14px;border-radius:20px;
  border:1px solid var(--b);margin-bottom:12px;letter-spacing:.5px;text-transform:uppercase;
}
.section-header h2{font-family:'Playfair Display',serif;font-size:34px;color:var(--gd);margin-bottom:12px}
.section-header p{color:var(--tm);font-size:15px;max-width:500px;margin:0 auto;line-height:1.7}

/* ===== SERVICES ===== */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.service-card{
  background:var(--w);border-radius:16px;border:1px solid var(--b);
  padding:28px;transition:all .3s;position:relative;overflow:hidden;
}
.service-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--gd),var(--gl));
  transform:scaleX(0);transition:transform .3s;transform-origin:left;
}
.service-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(15,110,86,.12);border-color:var(--gl)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{
  width:52px;height:52px;background:var(--gp);border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;margin-bottom:18px;
}
.service-card h3{font-size:16px;font-weight:600;color:var(--gd);margin-bottom:9px}
.service-card p{font-size:13px;color:var(--tm);line-height:1.7}

/* ===== PROCESS ===== */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.process-steps::before{
  content:'';position:absolute;top:30px;left:12.5%;right:12.5%;height:2px;
  background:linear-gradient(90deg,var(--gl),var(--gd));z-index:0;
}
.process-step{text-align:center;padding:0 16px;position:relative;z-index:1}
.step-num{
  width:60px;height:60px;border-radius:50%;background:var(--gd);color:#fff;
  font-size:20px;font-weight:700;font-family:'Playfair Display',serif;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;border:4px solid var(--gb);
}
.process-step h4{font-size:14px;font-weight:600;color:var(--gd);margin-bottom:7px}
.process-step p{font-size:13px;color:var(--tm);line-height:1.6}

/* ===== WHY US ===== */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.why-list{display:flex;flex-direction:column;gap:20px}
.why-item{display:flex;gap:14px;padding:18px;background:var(--w);border-radius:12px;
  border:1px solid var(--b);transition:box-shadow .2s}
.why-item:hover{box-shadow:0 6px 20px rgba(15,110,86,.1)}
.why-dot{
  width:42px;height:42px;background:var(--gp);border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;
}
.why-item h4{font-size:14px;font-weight:600;color:var(--gd);margin-bottom:4px}
.why-item p{font-size:13px;color:var(--tm);line-height:1.6}
.why-visual{background:var(--gd);border-radius:18px;padding:36px;display:flex;flex-direction:column;gap:18px}
.cert-badge{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:12px;padding:16px 20px;display:flex;align-items:center;gap:14px;
}
.cert-icon{font-size:24px}
.cert-text{color:#fff}
.cert-text strong{display:block;font-size:14px;font-weight:600}
.cert-text span{font-size:12px;opacity:.7}

/* ===== TESTIMONIALS ===== */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testi-card{
  background:var(--w);border:1px solid var(--b);border-radius:16px;
  padding:26px;transition:box-shadow .2s;
}
.testi-card:hover{box-shadow:0 8px 30px rgba(15,110,86,.1)}
.stars{color:#f0b429;font-size:14px;margin-bottom:10px}
.testi-text{font-size:14px;color:#4a7060;line-height:1.75;margin-bottom:18px;font-style:italic}
.testi-author{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--gp);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;border:2px solid var(--b);
}
.author-name{font-size:13px;font-weight:600;color:var(--gd)}
.author-loc{font-size:12px;color:var(--tm)}

/* ===== CTA ===== */
.cta-section{
  background:var(--gd);padding:76px 80px;text-align:center;position:relative;overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;top:-60px;left:-60px;width:200px;height:200px;
  border-radius:50%;background:rgba(255,255,255,.05);
}
.cta-section h2{font-family:'Playfair Display',serif;font-size:36px;color:#fff;margin-bottom:12px}
.cta-section p{color:var(--ta);font-size:16px;margin-bottom:32px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--gd);padding:14px 30px;border-radius:10px;
  font-size:15px;font-weight:700;text-decoration:none;transition:all .2s;display:inline-block}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.btn-ghost{border:2px solid rgba(255,255,255,.4);color:#fff;padding:14px 30px;border-radius:10px;
  font-size:15px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-block}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1)}


/* =====================================================
   FLOATING BUTTONS
   PHẢI: Chat(trên) → Call(giữa) → Zalo(dưới)
   TRÁI: Scroll-top^(trên) → Call(giữa) → Zalo(dưới)
   ===================================================== */

/* Cột PHẢI */
.frc{
  position:fixed;bottom:24px;right:20px;z-index:1100;
  display:flex;flex-direction:column;gap:10px;align-items:center;
}
/* Cột TRÁI */
.flc{
  position:fixed;bottom:24px;left:20px;z-index:999;
  display:flex;flex-direction:column;gap:10px;
}
/* Nút tròn dùng chung */
.fb{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  text-decoration:none;border:none;cursor:pointer;
  box-shadow:0 4px 16px rgba(0,0,0,.2);
  transition:transform .25s,box-shadow .25s,opacity .3s;
  position:relative;flex-shrink:0;
}
.fb:hover{transform:scale(1.1);box-shadow:0 8px 24px rgba(0,0,0,.26)}
.fb svg{width:22px;height:22px;fill:#fff;pointer-events:none}
/* Màu sắc */
.fb-chat{background:var(--gm);color:var(--gm)}
.fb-call{background:var(--gd);color:var(--gd)}
.fb-zalo{background:#0068ff;color:#0068ff}
.fb-top{background:#fff;border:2px solid var(--gm);color:var(--gm)}
/* SVG ^ nâu xanh đậm, không bị override */
.fb-top svg{fill:var(--gd) !important}
/* Pulse ring */
.fb-chat::before,.fb-call::before,.fb-zalo::before{
  content:'';position:absolute;inset:0;border-radius:50%;
  border:2px solid currentColor;animation:fbPulse 2.2s ease-out infinite;opacity:0;
}
/* Scroll-top: ẩn khi đầu trang */
.fb-top{opacity:0;pointer-events:none}
.fb-top.visible{opacity:1;pointer-events:auto}

/* Tooltip phải → sang trái */
.frc .fb .tip{
  position:absolute;right:60px;top:50%;transform:translateY(-50%);
  background:rgba(10,30,20,.82);color:#fff;font-size:11px;
  padding:4px 9px;border-radius:6px;white-space:nowrap;
  opacity:0;pointer-events:none;transition:opacity .2s;
  font-family:'Be Vietnam Pro',sans-serif;
}
/* Tooltip trái → sang phải */
.flc .fb .tip{
  position:absolute;left:60px;top:50%;transform:translateY(-50%);
  background:rgba(10,30,20,.82);color:#fff;font-size:11px;
  padding:4px 9px;border-radius:6px;white-space:nowrap;
  opacity:0;pointer-events:none;transition:opacity .2s;
  font-family:'Be Vietnam Pro',sans-serif;
}
.fb:hover .tip{opacity:1}

/* Badge đỏ chat */
.cv-badge{
  position:absolute;top:-3px;right:-3px;width:18px;height:18px;
  background:#e53935;border-radius:50%;color:#fff;font-size:10px;font-weight:700;
  display:flex;align-items:center;justify-content:center;border:2px solid #fff;
}

@keyframes fbPulse{0%{transform:scale(1);opacity:.55}100%{transform:scale(1.75);opacity:0}}

/* =====================================================
   CHAT BOX
   bottom = 24 + 3×52 + 2×10 + 14 = 214px (desktop)
   Không che Call/Zalo
   ===================================================== */
#cv-chat-box{
  position:fixed;bottom:214px;right:20px;
  width:320px;background:#fff;
  border-radius:18px 18px 18px 4px;
  box-shadow:0 12px 40px rgba(15,110,86,.18);
  border:1px solid var(--b);overflow:hidden;
  display:none;flex-direction:column;z-index:1099;
  animation:cvUp .3s ease;
}
#cv-chat-box.open{display:flex}
@keyframes cvUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

.cv-hdr{background:var(--gd);padding:13px 15px;display:flex;align-items:center;gap:10px}
.cv-av{width:34px;height:34px;border-radius:50%;background:var(--gp);display:flex;
  align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.cv-info{flex:1}
.cv-name{color:#fff;font-size:13px;font-weight:600}
.cv-status{display:flex;align-items:center;gap:5px;font-size:11px;color:var(--ta)}
.cv-dot{width:6px;height:6px;border-radius:50%;background:#4ade80;animation:cvBlink 1.5s ease-in-out infinite}
@keyframes cvBlink{0%,100%{opacity:1}50%{opacity:.4}}
.cv-close{background:none;border:none;color:rgba(255,255,255,.7);font-size:20px;
  cursor:pointer;padding:2px 6px;border-radius:4px;line-height:1;transition:color .2s}
.cv-close:hover{color:#fff}

.cv-msgs{
  padding:12px;height:230px;overflow-y:auto;
  display:flex;flex-direction:column;gap:9px;background:#f9fdf9;
}
.cv-msgs::-webkit-scrollbar{width:4px}
.cv-msgs::-webkit-scrollbar-thumb{background:var(--b);border-radius:4px}

.cv-msg{display:flex;gap:7px;align-items:flex-end;max-width:85%}
.cv-msg.bot{align-self:flex-start}
.cv-msg.user{align-self:flex-end;flex-direction:row-reverse}
.cv-ico{width:24px;height:24px;border-radius:50%;background:var(--gp);
  display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0}
.cv-bub{padding:8px 11px;border-radius:14px;font-size:13px;line-height:1.55}
.cv-msg.bot .cv-bub{background:#fff;border:1px solid var(--b);color:var(--td);border-radius:4px 14px 14px 14px}
.cv-msg.user .cv-bub{background:var(--gd);color:#fff;border-radius:14px 4px 14px 14px}
.cv-time{font-size:10px;color:var(--tm);margin-top:4px;padding:0 4px}

.cv-typing{display:flex;gap:4px;padding:9px 13px;background:#fff;border:1px solid var(--b);
  border-radius:4px 14px 14px 14px;align-self:flex-start}
.cv-typing span{width:6px;height:6px;border-radius:50%;background:var(--gm);animation:cvDot .9s ease-in-out infinite}
.cv-typing span:nth-child(2){animation-delay:.15s}
.cv-typing span:nth-child(3){animation-delay:.3s}
@keyframes cvDot{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

.cv-qr{padding:7px 12px;display:flex;gap:6px;flex-wrap:wrap;background:#f9fdf9;border-top:1px solid var(--b)}
.cv-qr-btn{background:var(--gp);border:1px solid var(--b);color:var(--gd);font-size:11px;
  padding:4px 9px;border-radius:20px;cursor:pointer;transition:all .2s;
  font-family:'Be Vietnam Pro',sans-serif;white-space:nowrap}
.cv-qr-btn:hover{background:var(--gd);color:#fff;border-color:var(--gd)}

.cv-inp-wrap{padding:9px 11px;border-top:1px solid var(--b);display:flex;gap:7px;
  align-items:center;background:#fff}
.cv-inp{flex:1;border:1px solid var(--b);border-radius:20px;padding:7px 13px;
  font-size:13px;font-family:'Be Vietnam Pro',sans-serif;outline:none;transition:border-color .2s}
.cv-inp:focus{border-color:var(--gm)}
.cv-snd{width:32px;height:32px;border-radius:50%;background:var(--gd);border:none;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .2s;flex-shrink:0}
.cv-snd:hover{background:var(--gm)}
.cv-snd svg{width:15px;height:15px;fill:#fff}

/* =====================================================
   RESPONSIVE
   ===================================================== */
/* Tablet 768–1100px */
@media(max-width:1100px){
  header{padding:0 24px}
  .section,.cta-section,footer{padding-left:28px;padding-right:28px}
  .hero{padding:90px 28px 60px}
  .hero-visual-wrap{width:320px;right:28px}
  .hero h1{font-size:42px}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .testimonials-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .why-grid{gap:32px}
}

/* Mobile 768px */
@media(max-width:768px){
  header{padding:0 16px;height:62px}
  nav{
    display:none;position:fixed;top:62px;left:0;right:0;
    background:rgba(255,255,255,.98);flex-direction:column;gap:0;
    padding:6px 0 14px;box-shadow:0 8px 24px rgba(15,110,86,.1);
    border-bottom:1px solid var(--b);z-index:998;
  }
  nav.open{display:flex}
  nav a{padding:12px 24px;font-size:15px}
  nav a::after{display:none}
  .hamburger{display:flex}
  .logo-slogan-sm{display:none}
  .hero{
    flex-direction:column;padding:80px 16px 48px;
    min-height:auto;gap:32px;
  }
  .hero-content{max-width:100%}
  .hero h1{font-size:32px}
  .hero-visual-wrap{
    position:relative;right:auto;top:auto;transform:none;
    width:100%;
  }
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-outline{text-align:center}
  .hero-stats{gap:20px}
  .section{padding:44px 16px}
  .section-header h2{font-size:26px}
  .services-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr 1fr;gap:24px}
  .process-steps::before{display:none}
  .why-grid{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
  footer{padding:44px 16px 80px}
  .cta-section{padding:52px 16px}
  .cta-section h2{font-size:26px}

  /* Float nhỏ hơn mobile */
  .frc{right:10px;bottom:14px;gap:8px}
  .flc{left:10px;bottom:14px;gap:8px}
  .fb{width:44px;height:44px}
  .fb svg{width:19px;height:19px}
  .fb .tip{display:none}
  /* Chat box mobile: bottom = 14+3×44+2×8+12=158px */
  #cv-chat-box{bottom:158px;right:10px;width:calc(100vw - 28px);max-width:300px}
}

/* Mobile nhỏ */
@media(max-width:400px){
  .hero h1{font-size:26px}
  .hero-stats{flex-direction:column;gap:12px}
}

@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}