* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Hind Siliguri', sans-serif;
  background: #f8f9fa;
  color: #333;
  line-height: 1.7;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
section { padding: 70px 0; }
h1, h2, h3, h4 { font-weight: 700; }
.btn {
  display: inline-block; padding: 16px 36px; font-size: 20px; font-weight: 600;
  background: #e63946; color: white; border-radius: 50px; text-decoration: none;
  transition: 0.3s; box-shadow: 0 6px 20px rgba(230,57,70,0.3); cursor: pointer;
  border: none; font-family: inherit;
}
.btn:hover { background: #d00000; transform: translateY(-3px); }
.text-center { text-align: center; }
.subtext { font-size: 18px; color: #555; margin-bottom: 40px; }
/* ========================================
   TOP OFFER BAR - 100% MOBILE RESPONSIVE
   ======================================== */
.top-offer-bar {
  position: fixed; top: 0; left: 0; width: 100%;
  background: linear-gradient(135deg, #e63946, #f77f00); color: white;
  font-weight: 600; padding: 12px 0; text-align: center;
  z-index: 9999; box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  font-size: 19px; line-height: 1.4;
}
.top-offer-bar .container {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; flex-wrap: wrap;
}
.top-offer-bar .fire { font-size: 18px; animation: pulse 1.5s infinite; }
.top-offer-bar .clock { font-size: 16px; }
#offer-timer {
  background: rgba(255,255,255,0.25); padding: 3px 10px; border-radius: 16px;
  font-weight: 700; font-size: 14px; letter-spacing: 0.5px; backdrop-filter: blur(5px);
}
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.2); } }
/* Mobile: Stack vertically */
@media (max-width: 480px) {
  .top-offer-bar { font-size: 13px; padding: 6px 0; }
  .top-offer-bar .container { flex-direction: column; gap: 4px; }
  .top-offer-bar .fire { font-size: 16px; }
  .top-offer-bar .clock { font-size: 14px; }
  #offer-timer { font-size: 12px; padding: 2px 8px; }
}
/* ========================================
   HERO
   ======================================== */
.hero {
  background: linear-gradient(135deg, #1d3557 0%, #457b9d 100%);
  color: white; padding: 120px 20px 100px; position: relative; overflow: hidden;
  margin-top: 50px;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('https://milk.payraagro.com.bd/img/fish-booster-bg.jpg') center/cover no-repeat;
  opacity: 0.1; z-index: 0;
}
.hero > .container { position: relative; z-index: 2; }
.hero-content {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
  max-width: 1100px; margin: 0 auto;
}
.hero-text { animation: fadeInLeft 1s ease; }
.hero-title { font-size: 48px; margin-bottom: 16px; line-height: 1.2; text-shadow: 0 2px 8px rgba(0,0,0,0.4); }
.hero-subtitle { font-size: 22px; margin-bottom: 28px; opacity: 0.95; text-shadow: 0 1px 6px rgba(0,0,0,0.3); }
.hero-image-wrapper { text-align: center; animation: fadeInRight 1s ease; }
.hero-image { max-width: 100%; height: auto; border-radius: 20px; box-shadow: 0 15px 40px rgba(0,0,0,0.3); border: 5px solid white; transition: transform 0.4s ease; }
.hero-image:hover { transform: scale(1.05); }
.countdown { font-size: 20px; font-weight: 600; margin-top: 24px; background: rgba(255,255,255,0.2); padding: 12px 28px; border-radius: 50px; display: inline-block; backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.3); }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
/* ========================================
   PRODUCT SELECTION
   ======================================== */
.product-selection { background: #fff; padding: 80px 0; }
.product-selection h2 { font-size: 38px; color: #1d3557; margin-bottom: 20px; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1100px; margin: 40px auto 0; }
.product-card {
  background: #ffffff; border-radius: 24px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  transition: all 0.4s ease; border: 2px solid #eee; position: relative; cursor: pointer;
}
.product-card:hover { transform: translateY(-12px); box-shadow: 0 20px 50px rgba(230,57,70,0.2); border-color: #e63946; }
.product-card.selected { border-color: #e63946; box-shadow: 0 0 0 4px rgba(230,57,70,0.2); }
.product-badge { position: absolute; top: 15px; right: 15px; background: #e63946; color: white; padding: 6px 14px; border-radius: 50px; font-size: 14px; font-weight: 600; z-index: 2; }
.product-img-wrapper { position: relative; overflow: hidden; }
.product-img { width: 100%; height: 220px; object-fit: cover; transition: transform 0.4s ease; }
.product-card:hover .product-img { transform: scale(1.08); }
.product-content { padding: 24px; text-align: center; }
.product-title { font-size: 22px; color: #1d3557; margin-bottom: 12px; font-weight: 700; }
.product-desc { font-size: 16px; color: #555; margin-bottom: 16px; line-height: 1.6; }
.product-price { font-size: 26px; color: #e63946; font-weight: 700; margin-bottom: 16px; }
.product-old-price { text-decoration: line-through; color: #999; font-size: 18px; margin-right: 8px; }
.product-select-btn { background: #e63946; color: white; border: none; padding: 14px 32px; font-size: 18px; font-weight: 600; border-radius: 50px; cursor: pointer; width: 100%; transition: 0.3s; }
.product-select-btn:hover { background: #d00000; }
.product-card.selected .product-select-btn { background: #2d6a4f; }
.product-card.selected .product-select-btn::after { content: " Selected"; }
/* ========================================
   OFFER STACK
   ======================================== */
.offer-stack { background: linear-gradient(135deg, #fff8f0, #fff5eb); padding: 90px 0; border-top: 3px solid #e63946; border-bottom: 3px solid #e63946; }
.offer-stack h2 { font-size: 42px; color: #1d3557; margin-bottom: 16px; }
.offer-stack .subtext { font-size: 20px; color: #e63946; font-weight: 600; margin-bottom: 50px; }
.offer-container { background: white; max-width: 800px; margin: 0 auto; border-radius: 24px; overflow: hidden; box-shadow: 0 20px 60px rgba(230,57,70,0.2); border: 3px solid #e63946; }
.offer-header { background: linear-gradient(135deg, #e63946, #f77f00); color: white; padding: 24px; text-align: center; }
.offer-header h3 { font-size: 32px; margin-bottom: 8px; }
.offer-header p { font-size: 18px; opacity: 0.95; }
.offer-list { padding: 30px; }
.offer-item { display: flex; align-items: flex-start; gap: 16px; padding: 18px 0; border-bottom: 1px dashed #ddd; }
.offer-item:last-child { border-bottom: none; }
.offer-icon { width: 50px; height: 50px; background: #e63946; color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; box-shadow: 0 4px 12px rgba(230,57,70,0.3); }
.offer-content h4 { font-size: 20px; color: #1d3557; margin-bottom: 6px; }
.offer-content p { font-size: 16px; color: #555; margin: 0; }
.offer-value { font-weight: 700; color: #e63946; font-size: 18px; }
.offer-total { background: #f8f9fa; padding: 24px; text-align: center; border-top: 2px dashed #e63946; }
.offer-total h4 { font-size: 28px; color: #1d3557; margin-bottom: 12px; }
.total-value { font-size: 38px; font-weight: 700; color: #e63946; text-shadow: 0 2px 8px rgba(230,57,70,0.2); }
.actual-price { font-size: 48px; font-weight: 700; color: #2d6a4f; text-shadow: 0 2px 8px rgba(45,106,79,0.2); }
.save-amount { font-size: 24px; color: #e63946; font-weight: 600; margin: 12px 0; }
.offer-cta { margin-top: 20px; }
/* ========================================
   PROBLEM, SOLUTION, BENEFITS
   ======================================== */
.problem, .solution, .benefits { padding: 80px 0; }
.problem { background: #fff; }
.problem h2 { font-size: 36px; color: #e63946; margin-bottom: 40px; }
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.problem-card { background: #fff5f5; padding: 28px; border-radius: 18px; text-align: center; border: 2px dashed #e63946; }
.problem-card h3 { color: #e63946; margin-bottom: 12px; font-size: 22px; }
.solution { background: linear-gradient(135deg, #f1faee, #d8f3dc); }
.solution-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; max-width: 1100px; margin: 0 auto; }
.solution-text h2 { font-size: 40px; color: #1d3557; margin-bottom: 20px; position: relative; padding-bottom: 15px; }
.solution-text h2::after { content: ''; position: absolute; bottom: 0; left: 0; width: 80px; height: 4px; background: #e63946; border-radius: 2px; }
.solution-text p { font-size: 20px; margin-bottom: 28px; color: #2d6a4f; }
.solution-list { list-style: none; margin-bottom: 32px; }
.solution-list li { font-size: 18px; margin: 14px 0; color: #1d3557; }
.benefits h2 { font-size: 38px; color: #1d3557; margin-bottom: 50px; }
.benefit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.benefit-card { background: #ffffff; padding: 32px 20px; border-radius: 20px; box-shadow: 0 8px 25px rgba(0,0,0,0.08); transition: all 0.3s ease; border: 1px solid #eee; text-align: center; }
.benefit-card:hover { transform: translateY(-10px); box-shadow: 0 15px 35px rgba(230,57,70,0.15); border-color: #e63946; }
.benefit-icon { width: 90px; height: 90px; background: linear-gradient(135deg, #e63946, #f77f00); color: white; font-size: 28px; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin: 0 auto 20px; box-shadow: 0 6px 15px rgba(230,57,70,0.3); }
/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials-video, .testimonials-image { padding: 90px 0; }
.testimonials-video { background: #f8f9fa; }
.testimonials-image { background: #ffffff; }
.testimonials-video h2, .testimonials-image h2 { font-size: 38px; color: #1d3557; margin-bottom: 16px; }
.video-grid, .image-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 1100px; margin: 0 auto; }
.video-item, .image-item { background: white; border-radius: 20px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.1); transition: 0.3s; text-align: center; }
.video-item:hover, .image-item:hover { transform: translateY(-8px); box-shadow: 0 18px 40px rgba(230,57,70,0.15); }
.video-item iframe { width: 100%; height: 220px; border: none; }
.image-item img { width: 100%; height: 280px; object-fit: cover; }
.caption { padding: 16px; font-size: 16px; color: #444; font-weight: 500; }
/* ========================================
   HOW TO USE
   ======================================== */
.how-to-use { background: linear-gradient(135deg, #1d3557, #457b9d); color: white; padding: 100px 0; }
.how-to-use h2 { font-size: 40px; margin-bottom: 16px; color: white; }
.section-subtitle { font-size: 20px; margin-bottom: 50px; opacity: 0.9; color: #f1faee; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; max-width: 1100px; margin: 0 auto; }
.step-card { background: rgba(255, 255, 255, 0.12); backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 24px; padding: 32px 24px; text-align: center; transition: all 0.4s ease; box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.step-card:hover { transform: translateY(-12px); background: rgba(255, 255, 255, 0.2); box-shadow: 0 18px 40px rgba(230,57,70,0.25); }
.step-icon { width: 80px; height: 80px; background: #e63946; color: white; font-size: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; box-shadow: 0 6px 15px rgba(230,57,70,0.4); }
/* ========================================
   USAGE GUIDE, FAQ
   ======================================== */
.usage-guide, .faq { background: #fff; padding: 80px 0; }
.usage-guide h2, .faq h2 { font-size: 38px; color: #1d3557; margin-bottom: 40px; text-align: center; }
.usage-list { max-width: 750px; margin: 0 auto; }
.usage-item { background: #f8f9fa; padding: 22px; margin: 16px 0; border-radius: 14px; border-left: 5px solid #e63946; }
.faq-item { margin-bottom: 18px; }
.faq-question { background: white; padding: 18px; border-radius: 12px; font-weight: 600; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.faq-answer { display: none; padding: 18px; background: white; border-radius: 12px; margin-top: 8px; color: #555; }
/* ========================================
   
/* ========================================
   FINAL CTA & FOOTER
   ======================================== */
.final-cta { background: linear-gradient(135deg, #e63946, #f77f00); color: white; padding: 80px 0; }
.final-cta h2 { font-size: 42px; margin-bottom: 20px; }
footer { background: #1d3557; color: #ddd; padding: 50px 0; font-size: 15px; }
.footer-links a { color: #a8dadc; text-decoration: none; margin: 0 12px; font-weight: 500; }
/* ========================================
   FLOATING BUTTONS
   ======================================== */
.floating-buttons { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 12px; z-index: 9998; }
.float-btn { width: 58px; height: 58px; background: #25D366; color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 28px; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); transition: all 0.3s ease; text-decoration: none; animation: float 2s infinite ease-in-out; }
.float-btn.call { background: #e63946; }
.float-btn:hover { transform: scale(1.1); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3); }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
/* ========================================
   FULL MOBILE RESPONSIVE (95%+ Users)
   ======================================== */
@media (max-width: 992px) {
  .hero-content, .solution-content, .video-grid, .image-grid, .product-grid { grid-template-columns: 1fr; }
  .hero-text { order: 2; text-align: center; }
  .hero-image-wrapper { order: 1; }
  .offer-item { flex-direction: column; text-align: center; }
  .offer-icon { margin: 0 auto 12px; }
}
@media (max-width: 768px) {
  .hero { padding: 140px 15px 80px; margin-top: 45px; }
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 20px; }
  .btn { padding: 14px 28px; font-size: 18px; }
  .countdown { font-size: 18px; padding: 10px 20px; }
  .video-grid, .image-grid, .product-grid { grid-template-columns: 1fr; }
  .floating-buttons { bottom: 15px; right: 15px; gap: 10px; }
  .float-btn { width: 52px; height: 52px; font-size: 24px; }
  .offer-stack h2 { font-size: 32px; }
  .offer-header h3 { font-size: 26px; }
  .total-value { font-size: 32px; }
  .actual-price { font-size: 40px; }
  .product-card { max-width: 400px; margin: 0 auto; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 18px; }
  .btn { padding: 12px 24px; font-size: 17px; }
  section { padding: 50px 0; }
  .product-selection h2, .offer-stack h2, .benefits h2 { font-size: 28px; }
  .product-title { font-size: 20px; }
  .product-price { font-size: 24px; }
  .order-form { padding: 30px; }
  .submit-btn { font-size: 20px; padding: 16px; }
  .top-offer-bar { font-size: 12px; padding: 5px 0; }
  .top-offer-bar .container { gap: 3px; }
  .top-offer-bar .fire, .top-offer-bar .clock { font-size: 14px; }
  #offer-timer { font-size: 11px; padding: 2px 6px; }
}