/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }
body { background: #0d0d0d; color: #f5f5f5; overflow-x: hidden; padding-top: 70px; }
a { text-decoration: none; color: inherit; }

/* Navbar */
header {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 70px;
  background: rgba(0,0,0,0.9);
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 20px;
  z-index: 1000;
  border-bottom: 1px solid #ffb400;
}
.logo { display: flex; align-items: center; }
.logo img { height: 50px; margin-right: 8px; }
.logo span { font-size: 20px; font-weight: bold; color: #ffb400; }

nav { display: flex; align-items: center; }
nav a { margin-left: 20px; font-size: 1rem; transition: color 0.3s; }
nav a:hover { color: #ffb400; }

/* Hamburger */
.hamburger { display: none; flex-direction: column; cursor: pointer; }
.hamburger span {
  height: 3px; width: 25px; background: #fff; margin: 4px 0; border-radius: 2px;
}

/* Hero */
.hero {
  height: 100vh;
  background: url('assets/images/banner.png') center/cover no-repeat;
  display: flex; justify-content: center; align-items: center;
  text-align: center; padding: 20px; position: relative;
}
.hero::after {
  content: ''; position: absolute; top:0; left:0; width:100%; height:100%;
  background: rgba(0,0,0,0.7);
}
.hero-content { position: relative; z-index: 2; animation: fadeInUp 1.5s ease; }
.hero h2 { font-size: 2.5rem; color: #ffb400; margin-bottom: 20px; text-shadow: 0 0 15px rgba(255,180,0,0.7); }
.subtitle { font-size: 1.1rem; line-height: 1.6; max-width: 700px; margin: auto; margin-bottom: 30px; }
.hero-cta { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-cta button {
  padding: 12px 24px; border: none; border-radius: 30px; font-weight: 600;
  cursor: pointer; transition: all 0.3s ease;
}
.primary-btn { background: #ffb400; color: #0d0d0d; }
.primary-btn:hover { background: #ffcc33; transform: translateY(-3px); }
.secondary { background: transparent; border: 2px solid #ffb400; color: #ffb400; }
.secondary:hover { background: #ffb400; color: #0d0d0d; }

/* Highlights */
.hero-highlights { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.highlight-box {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,180,0,0.4);
  border-radius: 12px; padding: 12px 18px; min-width: 120px;
  text-align: center; font-size: 0.9rem; box-shadow: 0 0 10px rgba(255,180,0,0.15);
  transition: transform 0.3s;
}
.highlight-box:hover { transform: translateY(-5px); }
.highlight-box span { display: block; font-size: 1.4rem; margin-bottom: 5px; }

/* About */
.about { padding: 80px 20px; background: #111; text-align: center; }
.about-container {
  max-width: 1100px; margin: auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.about-text h3 { font-size: 2rem; margin-bottom: 20px; color: #ffae42; }
.about-text p { margin-bottom: 15px; line-height: 1.7; }
.about-graphics { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 20px; }
.about-graphics .symbol {
  flex: 1; min-width: 120px;
  background: rgba(255,255,255,0.05); border-radius: 12px; padding: 20px;
  transition: transform 0.3s ease;
}
.about-graphics .symbol:hover { transform: translateY(-8px); }
.about-graphics img { width: 50px; margin-bottom: 10px; filter: invert(80%) sepia(60%) hue-rotate(10deg); }
.about-graphics p { font-size: 0.85rem; color: #ccc; }

/* Product */
.product { padding: 80px 20px; text-align: center; background: #1a1a1a; }
.product h3 { font-size: 2rem; margin-bottom: 20px; color: #ffb400; text-shadow: 0 0 8px rgba(255,180,0,0.6); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1100px;
  margin: auto;
}
.product-card {
  background: #222;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.6);
}
.slider { position: relative; }
.slider img {
  width: 100%;
  display: none;
  border-bottom: 1px solid #333;
}
.slider img.active { display: block; }
.slider-nav {
  position: absolute; bottom: 12px; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: 8px;
}
.slider-nav span {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
}
.slider-nav span.active { background: #ffb400; }
.product-info { padding: 15px; text-align: left; }
.product-info h4 { font-size: 1.2rem; color: #ffb400; margin-bottom: 6px; }
.product-info p { font-size: 0.9rem; color: #ccc; margin-bottom: 10px; }
.price { font-size: 1.1rem; font-weight: bold; color: #ffcc33; }
.price .old { text-decoration: line-through; font-size: 0.9rem; color: #777; margin-left: 6px; }
.price .off { color: #4CAF50; font-size: 0.9rem; margin-left: 6px; }
.know-btn {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 18px;
  background: transparent;
  border: 1px solid #ffb400;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: bold;
  color: #ffb400;
  transition: all 0.3s;
}
.know-btn:hover {
  background: #ffb400;
  color: #111;
}

/* How It Works */
.how-it-works {padding:80px 20px; background:#111; text-align:center;}
.how-it-works h3 {font-size:2rem; margin-bottom:50px; color:#ffb400;}
.steps {display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:30px; max-width:1200px; margin:auto;}
.step {background:rgba(255,255,255,0.05); padding:30px; border-radius:15px; transition:transform 0.3s, box-shadow 0.3s; display:flex; flex-direction:column; align-items:center;}
.step:hover {transform:translateY(-8px); box-shadow:0 8px 20px rgba(255,180,0,0.3);}
.step img {
  width: 100px;
  margin-bottom: 25px;
  filter: drop-shadow(0 0 6px rgba(255,180,0,0.4));
  transition: transform 0.3s ease;
}
.step img:hover { transform: scale(1.08); }
.step h4 {font-size:1.2rem; color:#ffb400; margin-bottom:12px;}
.step p {font-size:0.9rem; color:#ccc; margin-bottom:15px;}
.cta-btn {padding:10px 20px; border-radius:25px; border:none; background:#ffb400; color:#0d0d0d; cursor:pointer; font-weight:bold; transition:all 0.3s;}
.cta-btn:hover {background:#ffcc33; transform:translateY(-2px);}

/* Gallery */
.gallery { padding: 80px 20px; background: #111; text-align: center; }
.gallery h3 { font-size: 1.8rem; margin-bottom: 30px; color: #ffb400; }
.gallery-container {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px; max-width: 1000px; margin: auto;
}
.gallery-item { border-radius: 12px; overflow: hidden; border: 2px solid rgba(255,180,0,0.3); }
.gallery-item img { width: 100%; transition: transform 0.4s; }
.gallery-item:hover img { transform: scale(1.1); }

/* Floater */
.floater {
  position: fixed; bottom: 20px; right: 20px;
  text-align: center; animation: bounce 2s infinite;
}
.floater img { width: 70px; }
.floater-btn {
  margin-top: 5px; padding: 8px 15px; background: #ffb400; border: none;
  border-radius: 20px; cursor: pointer; font-weight: bold;
}
@keyframes bounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* Footer */
footer { padding: 25px; text-align: center; background: #000; border-top: 1px solid #ffb400; margin-top: 40px; font-size: 0.9rem; }

/* Responsive */
@media(max-width: 768px) {
  nav {
    display: none; flex-direction: column;
    position: absolute; top: 70px; right: 0; width: 100%;
    background: rgba(0,0,0,0.95); text-align: center;
  }
  nav a { margin: 15px 0; display: block; }
  nav.active { display: flex; }
  .hamburger { display: flex; }
  .about-container { grid-template-columns: 1fr; text-align: center; }
  .hero h2 { font-size: 1.8rem; }
  .subtitle { font-size: 1rem; }
}

/* Animation */
@keyframes fadeInUp { 0% { opacity: 0; transform: translateY(40px); } 100% { opacity: 1; transform: translateY(0); } }