/* RESET */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family:'Inter',sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(0,255,255,0.12), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(138,43,226,0.12), transparent 40%),
    #0a0a0a;
  color:#fff;
  overflow-x:hidden;
}

/* NAVBAR */
.navbar{
  position:sticky;
  top:0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 30px;

  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);

  background:rgba(10,10,10,0.7);
  border-bottom:1px solid rgba(255,255,255,0.05);
  z-index:100;
}

.logo{
  font-weight:700;
  font-size:20px;
}

/* ===== MENU PRO UI ===== */

.menu{
  position:fixed;
  top:0;
  right:0;

  width:50%;
  max-width:320px;
  height:100%;

  /* 🌫 glass effect */
  background:rgba(20,20,40,0.75);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);

  padding:80px 20px;
  display:flex;
  flex-direction:column;
  gap:15px;

  transform:translateX(100%);
  transition:transform 0.4s cubic-bezier(.77,0,.18,1);

  z-index:9999;

  border-left:1px solid rgba(255,255,255,0.08);
  box-shadow:-20px 0 60px rgba(0,0,0,0.8);
}

/* mở menu */
.menu.active{
  transform:translateX(0);
}

/* ===== ITEM ===== */
.menu a{
  display:block;
  padding:16px;
  border-radius:14px;

  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);

  color:#eaeaff;
  text-decoration:none;
  font-weight:500;

  opacity:0;
  transform:translateX(20px);

  transition:all 0.3s ease;
}

/* 🌟 animation xuất hiện từng item */
.menu.active a{
  opacity:1;
  transform:translateX(0);
}

/* delay từng item */
.menu.active a:nth-child(2){ transition-delay:0.1s; }
.menu.active a:nth-child(3){ transition-delay:0.2s; }
.menu.active a:nth-child(4){ transition-delay:0.3s; }
.menu.active a:nth-child(5){ transition-delay:0.4s; }

/* hover */
.menu a:hover{
  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  color:#000;

  transform:translateX(8px);
  box-shadow:0 0 20px rgba(0,255,255,0.6);
}

/* 🎯 ACTIVE ITEM (bạn thêm class="active" vào link) */
.menu a.active{
  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  color:#000;
  box-shadow:0 0 15px rgba(0,255,255,0.5);
}

/* ===== CLOSE BUTTON ===== */
.menu-close{
  position:absolute;
  top:20px;
  right:20px;

  font-size:22px;
  color:#fff;

  cursor:pointer;

  opacity:0.7;
  transition:0.25s;
}

.menu-close:hover{
  opacity:1;
  transform:rotate(90deg) scale(1.2);
}

/* ===== OVERLAY (xịn hơn) ===== */
.menu-overlay{
  position:fixed;
  inset:0;

  background:rgba(0,0,0,0.5);
  backdrop-filter:blur(3px);

  opacity:0;
  pointer-events:none;

  transition:0.3s;

  z-index:1500;
}

.menu-overlay.active{
  opacity:1;
  pointer-events:auto;
}

/* HERO */
.hero{
  text-align:center;
  padding:140px 20px 100px;
}

.hero h1{
  font-size:60px;
  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  -webkit-background-clip:text;
  color:transparent;
}

.hero p{
  color:#aaa;
  margin:20px 0 30px;
}

/* BUTTON */
.buttons{
  display:flex;
  justify-content:center;
  gap:15px;
  flex-wrap:wrap;
}

.btnMain{
  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  padding:14px 28px;
  border-radius:12px;
  color:#fff;
  text-decoration:none;
  font-weight:600;
  transition:0.3s;
}

.btnMain:hover{
  transform:translateY(-3px);
}

.btnSub{
  border:1px solid #444;
  padding:14px 26px;
  border-radius:12px;
  color:#fff;
  text-decoration:none;
}

/* CONTAINER */
.container{
  max-width:1100px;
  margin:auto;
  padding:80px 20px;
}

/* INTRO */
.intro{
  text-align:center;
}

.intro h2{
  font-size:30px;
}

.intro-desc{
  color:#aaa;
  margin:20px auto 40px;
  max-width:600px;
}

/* GRID */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
}

/* CARD */
.intro-card{
  background:#111;
  padding:25px;
  border-radius:16px;
  transition:0.3s;
}

.intro-card:hover{
  transform:translateY(-6px);
  box-shadow:0 0 20px rgba(0,255,255,0.3);
}

/* CTA */
.cta{
  text-align:center;
}

.cta h2{
  margin-bottom:20px;
}

/* FOOTER */
.footer{
  text-align:center;
  padding:40px;
  color:#666;
}

/* ZALO */
.zalo-wrapper{
  position:fixed;
  bottom:20px;
  right:20px;
  opacity:0;
  transform:translateY(20px);
  transition:0.4s;
}

.zalo-wrapper.show{
  opacity:1;
  transform:translateY(0);
}

.zalo-float{
  width:60px;
  height:60px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(#00f0ff,#0084ff);
}

.zalo-float img{
  width:30px;
}

/* MOBILE */
@media(max-width:768px){
  .hero h1{
    font-size:38px;
  }

  .container{
    padding:60px 15px;
  }
}
/* ===== GUIDE PAGE STYLE ===== */

.back-btn{
  display:inline-block;
  margin-bottom:20px;
  color:#aaa;
  text-decoration:none;
  font-size:14px;
  transition:0.2s;
}

.back-btn:hover{
  color:#00f0ff;
  transform:translateX(-3px);
}

/* TITLE */
h1{
  font-size:42px;
  margin-bottom:10px;

  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  -webkit-background-clip:text;
  color:transparent;
}

.subtitle{
  color:#aaa;
  margin-bottom:40px;
}

/* SECTION */
.section{
  margin-bottom:50px;
}

.section h2{
  margin-bottom:15px;
}

/* GRID CARD */
.card{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);

  padding:20px;
  border-radius:14px;

  transition:0.3s;
}

/* hover card */
.card:hover{
  transform:translateY(-5px);
  box-shadow:0 0 20px rgba(0,255,255,0.3);
}

/* CTA riêng guide */
.cta{
  text-align:center;
  margin-top:60px;
}

.cta h2{
  margin-bottom:20px;
}
/* ===== COUNTER MARKETING ===== */

.counter-box{
  margin-top:30px;
  text-align:center;

  padding:18px 22px;
  border-radius:16px;

  /* 🔥 nổi bật hơn */
  background:linear-gradient(90deg,rgba(0,240,255,0.08),rgba(138,43,226,0.08));
  border:1px solid rgba(255,255,255,0.1);

  display:inline-block;

  box-shadow:0 0 25px rgba(0,255,255,0.15);
}

/* dòng chính */
.counter-main{
  font-size:22px;
  font-weight:700;

  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  -webkit-background-clip:text;
  color:transparent;
}

/* dòng phụ */
.counter-sub{
  font-size:13px;
  color:#aaa;
  margin-top:6px;
}
/* ===== DEMO SLIDER ===== */

.demo-wrap{
  margin-top:60px;
  text-align:center;
}

/* slider */
.demo-slider{
  position:relative;
  max-width:600px;
  margin:auto;
  overflow:hidden;
  border-radius:16px;
}

/* ảnh */
.demo-img{
  width:100%;
  display:none;

  border-radius:16px;

  box-shadow:0 20px 60px rgba(0,0,0,0.6);
  transition:0.4s;
}

.demo-img.active{
  display:block;
}

/* DOT */
.demo-dots{
  margin-top:15px;

  display:flex;
  justify-content:center;  /* 🔥 CĂN GIỮA */
  align-items:center;
}
.demo-dots{
  width:100%;
}

.dot{
  display:inline-block;
  width:8px;
  height:8px;
  margin:0 4px;

  border-radius:50%;
  background:#555;

  cursor:pointer;
  transition:0.3s;
}

.dot.active{
  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  width:18px;
  border-radius:10px;
}
.demo-img:hover{
  transform:scale(1.03);
}
.demo-wrap{
  margin-top:60px;
  display:flex;
  flex-direction:column;
  align-items:center; /* 🔥 đảm bảo tất cả ở giữa */
}
/* ===== TICKER SINGLE ===== */

.ticker-wrap{
  width:100%;
  overflow:hidden;

  padding:10px 0;

  background:rgba(255,255,255,0.03);
  border-top:1px solid rgba(255,255,255,0.05);
  border-bottom:1px solid rgba(255,255,255,0.05);

  display:flex;
  justify-content:center;
}

/* text */
.ticker{
  font-size:14px;
  color:#aaa;

  opacity:0;
  transform:translateY(10px);

  transition:all 0.4s ease;
}

/* hiện */
.ticker.show{
  opacity:1;
  transform:translateY(0);
}
/* ===== WELCOME POPUP FULL ===== */

.welcome-overlay{
  position:fixed;
  inset:0;

  background:rgba(0,0,0,0.7);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);

  display:flex;
  align-items:center;
  justify-content:center;

  opacity:0;
  pointer-events:none;

  transition:0.3s ease;

  z-index:99999;
}

/* 🔥 HIỆN POPUP */
.welcome-overlay.show{
  opacity:1;
  pointer-events:auto;
}

/* ===== BOX ===== */
.welcome-box{
  position:relative;

  width:90%;
  max-width:380px;

  padding:28px 22px;
  border-radius:18px;

  text-align:center;

  background:linear-gradient(180deg,#14142a,#0f0f1f);
  border:1px solid rgba(255,255,255,0.08);

  box-shadow:0 20px 60px rgba(0,0,0,0.8);

  transform:translateY(20px) scale(0.95);
  transition:0.3s ease;
}

/* animation khi hiện */
.welcome-overlay.show .welcome-box{
  transform:translateY(0) scale(1);
}

/* ===== TITLE ===== */
.welcome-box h2{
  margin-bottom:10px;

  font-size:20px;

  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  -webkit-background-clip:text;
  color:transparent;
}

/* ===== TEXT ===== */
.welcome-box p{
  font-size:14px;
  color:#aaa;

  margin-bottom:20px;
}

/* ===== BUTTON OK ===== */
.welcome-ok{
  padding:12px 24px;
  border-radius:12px;

  border:none;
  cursor:pointer;

  font-weight:600;

  background:linear-gradient(90deg,#00f0ff,#8a2eff);
  color:#000;

  transition:0.3s;
}

/* hover */
.welcome-ok:hover{
  transform:translateY(-2px);
  box-shadow:0 0 15px rgba(0,255,255,0.5);
}

/* ===== CLOSE BUTTON ===== */
.welcome-close{
  position:absolute;
  top:12px;
  right:14px;

  font-size:18px;
  color:#fff;

  cursor:pointer;

  opacity:0.6;
  transition:0.2s;
}

.welcome-close:hover{
  opacity:1;
  transform:scale(1.2);
}
/* ===== DESC ===== */
.welcome-desc{
  font-size:14px;
  color:#ccc;
  margin-bottom:15px;
}

/* ===== NOTE ===== */
.popup-note{
  text-align:left;
  font-size:13px;
  color:#aaa;

  margin-bottom:15px;
  padding:10px;

  background:rgba(255,255,255,0.04);
  border-radius:10px;
}

.popup-note ul{
  margin-top:5px;
  padding-left:18px;
}

/* ===== BANK ===== */
.popup-bank{
  text-align:left;
  font-size:13px;

  margin-bottom:15px;
  padding:12px;

  border-radius:12px;

  background:linear-gradient(90deg,rgba(0,240,255,0.08),rgba(138,43,226,0.08));
  border:1px solid rgba(255,255,255,0.1);
}

.popup-bank p{
  margin:3px 0;
}

.bank-note{
  margin-top:6px;
  color:#00f0ff;
}

/* ===== BUTTON GROUP ===== */
.welcome-actions{
  display:flex;
  gap:10px;
  justify-content:center;
}

/* nút phụ */
.welcome-skip{
  padding:12px 20px;
  border-radius:12px;

  border:1px solid #444;
  background:transparent;
  color:#aaa;

  cursor:pointer;
  transition:0.3s;
}

.welcome-skip:hover{
  color:#fff;
  border-color:#888;
}