:root {
  --primary: #651e1a;
  --secondary: #f4a460;
  --light: #fff;
  --shadow: 0 2px 8px rgba(0,0,0,0.07);
}
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
}
.header {
  background: var(--light);
  box-shadow: var(--shadow);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
}
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}
.header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  height: 52px;
  width: auto;
}
nav {
  position: relative;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--primary);
  cursor: pointer;
}
.nav-list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  align-items: center;
}
.nav-list li {
  position: relative;
}
.nav-list > li > a {
  text-decoration: none;
  color: var(--primary);
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 4px;
  transition: background 0.2s;
}
.nav-list > li > a:hover,
.nav-list > li > a:focus {
  background: var(--secondary);
  color: var(--light);
}
.has-submenu > a i {
  margin-left: 5px;
  font-size: 0.9em;
}
.submenu {
  display: none;
  position: absolute;
  left: 0;
  top: 110%;
  background: var(--light);
  box-shadow: var(--shadow);
  min-width: 210px;
  border-radius: 5px;
  z-index: 10;
  padding: 0.5rem 0;
}
.has-submenu:hover > .submenu,
.has-submenu:focus-within > .submenu {
  display: block;
}
.submenu li {
  position: relative;
}
.submenu a {
  display: block;
  padding: 10px 22px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  border-radius: 3px;
  transition: background 0.2s;
}
.submenu a:hover,
.submenu a:focus {
  background: var(--secondary);
  color: var(--light);
}
.submenu-right {
  left: 100%;
  top: 0;
}
@media (max-width: 900px) {
  .header-flex {
    height: auto;
    flex-direction: column;
    align-items: stretch;
  }
  .logo {
    height: 48px;
  }
}
@media (max-width: 820px) {
  .nav-toggle {
    display: block;
  }
  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--light);
    position: absolute;
    top: 70px;
    right: 0;
    width: 250px;
    box-shadow: var(--shadow);
    border-radius: 0 0 8px 8px;
    z-index: 99;
  }
  .nav-list.open {
    display: flex;
  }
  .nav-list > li > a {
    padding: 15px 22px;
    border-radius: 0;
  }
  .submenu {
    position: static;
    box-shadow: none;
    min-width: 100%;
    border-radius: 0;
    padding: 0;
  }
  .submenu-right {
    left: 0;
    top: 0;
  }
}
section {
  min-height: 100px;
  padding: 40px 0;
}



.hero-banner {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: center;
    background: linear-gradient(120deg, #651e1a 60%, #fff 100%);
    padding: 3rem 1.5rem 2rem 1.5rem;
    min-height: 70vh;
    gap: 2rem;
}

.hero-content {
    text-align: center;
    color: #fff;
    max-width: 500px;
    animation: fadeInUp 1.2s;
}

.hero-content h1 {
    font-family: 'Inter', sans-serif;
    font-size: 2.2rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.hero-content p {
    font-family: 'Open Sans', sans-serif;
    font-size: 1.15rem;
    margin-bottom: 2rem;
    color: #f5eaea;
}

.hero-cta {
    display: inline-block;
    background: #1a651e;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.85rem 2.2rem;
    border-radius: 30px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(101,30,26,0.12);
    transition: background 0.3s, transform 0.2s;
}

.hero-cta:hover, .hero-cta:focus {
    background: #138a3a;
    transform: translateY(-2px) scale(1.04);
    outline: none;
}

.hero-image img {
    width: 260px;
    max-width: 100%;
    border-radius: 1.5rem;
    box-shadow: 0 6px 24px rgba(101,30,26,0.15);
    animation: fadeIn 1.4s;
}


@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px);}
    to { opacity: 1; transform: translateY(0);}
}
@keyframes fadeIn {
    from { opacity: 0;}
    to { opacity: 1;}
}


@media (min-width: 700px) {
    .hero-banner {
        flex-direction: row;
        text-align: left;
        padding: 5rem 8%;
        min-height: 80vh;
    }
    .hero-content {
        flex: 1;
        text-align: left;
    }
    .hero-image {
        flex: 1;
        display: flex;
        justify-content: flex-end;
        align-items: center;
    }
}





.product-showcase {
    background: #fff;
    padding: 4rem 1.5rem 3rem 1.5rem;
    text-align: center;
}

.section-title {
    color: #651e1a;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    letter-spacing: 1px;
    font-family: 'Inter', sans-serif;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: #fff;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(101,30,26,0.10);
    padding: 2rem 1.2rem 1.5rem 1.2rem;
    transition: transform 0.25s, box-shadow 0.25s;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s;
}

.product-card:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 8px 32px rgba(101,30,26,0.18);
}

.product-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.2rem;
    /* এখানে ৩ডি আইকনের জন্য বর্ডার ও শ্যাডো */
    border-radius: 1rem;
    box-shadow: 0 2px 12px rgba(101,30,26,0.07);
    background: #f8eaea;
    object-fit: contain;
}

.product-card h3 {
    color: #651e1a;
    font-size: 1.18rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.product-desc {
    color: #6d3b36;
    font-size: 1rem;
    margin-bottom: 1.2rem;
    font-family: 'Open Sans', sans-serif;
}

.product-meta {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.97rem;
    color: #1a651e;
    font-weight: 500;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px);}
    to { opacity: 1; transform: translateY(0);}
}

/* Responsive */
@media (min-width: 600px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 900px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}



.user-experience-elements {
    background: #f8f5f5;
    padding: 4rem 1.5rem;
}

.ux-section {
    margin-bottom: 3.5rem;
    background: #fff;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(101,30,26,0.10);
    padding: 2.5rem 1.5rem;
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.ux-section h2 {
    color: #651e1a;
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
    font-family: 'Inter', sans-serif;
}


.comparison-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
}
.comparison-slider select, .comparison-slider button {
    padding: 0.5rem 1rem;
    border-radius: 0.7rem;
    border: 1px solid #d9cfcf;
    font-size: 1rem;
}
.comparison-slider button {
    background: #1a651e;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}
.comparison-slider button:hover {
    background: #138a3a;
}
.comparison-result {
    min-height: 2.5rem;
    color: #6d3b36;
    font-weight: 500;
}


.savings-calculator form {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    align-items: flex-end;
    margin-bottom: 1rem;
}
.savings-calculator label {
    display: flex;
    flex-direction: column;
    font-size: 1rem;
    color: #651e1a;
    font-weight: 500;
}
.savings-calculator input, .savings-calculator select {
    margin-top: 0.4rem;
    padding: 0.5rem 0.8rem;
    border-radius: 0.7rem;
    border: 1px solid #d9cfcf;
    font-size: 1rem;
}
.savings-calculator button {
    background: #1a651e;
    color: #fff;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}
.savings-calculator button:hover {
    background: #138a3a;
}
.calc-result {
    color: #6d3b36;
    font-weight: 500;
    min-height: 2.2rem;
}


.faq-list {
    max-width: 600px;
    margin: 0 auto;
}
.faq-item {
    margin-bottom: 1rem;
    border-radius: 0.7rem;
    background: #f3eaea;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    background: #651e1a;
    color: #fff;
    border: none;
    padding: 1rem;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}
.faq-question:hover {
    background: #8a2a25;
}
.faq-answer {
    display: none;
    padding: 1rem;
    color: #651e1a;
    background: #fff;
    font-size: 1rem;
    border-top: 1px solid #e5d1d1;
}



.mobile-bottom-nav {
    display: none;
}

@media (max-width: 700px) {
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100vw;
        background: #651e1a;
        box-shadow: 0 -2px 12px rgba(101,30,26,0.10);
        z-index: 1000;
        justify-content: space-around;
        align-items: center;
        padding: 0.5rem 0;
    }
    .nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        color: #fff;
        text-decoration: none;
        font-size: 0.95rem;
        font-family: 'Inter', sans-serif;
        transition: color 0.2s;
    }
    .nav-item img {
        width: 28px;
        height: 28px;
        margin-bottom: 0.2rem;
        filter: brightness(0) invert(1); /* সাদা আইকন */
    }
    .nav-item:active,
    .nav-item:focus {
        color: #1a651e;
    }
}


button, .cta-btn, .feature-cta, .carousel-btn {
    min-width: 44px;
    min-height: 44px;
    font-size: 1rem;
    border-radius: 1.5rem;
}


@media (max-width: 700px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    .feature-list {
        grid-template-columns: 1fr;
    }
    .ux-section {
        padding: 1.2rem 0.5rem;
    }
    .carousel-btn.prev-btn, .carousel-btn.next-btn {
        left: 0;
        right: 0;
    }
    .hero-content h1 {
        font-size: 1.3rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
}



.benefits-section {
    background: #fff;
    padding: 4rem 1.5rem 3rem 1.5rem;
    text-align: center;
}

.section-title {
    color: #651e1a;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    font-family: 'Inter', sans-serif;
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.benefit-card {
    background: #fcf5f5;
    border-radius: 1.2rem;
    box-shadow: 0 4px 24px rgba(101,30,26,0.10);
    padding: 2rem 1.2rem 1.5rem 1.2rem;
    transition: transform 0.25s, box-shadow 0.25s;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s;
}

.benefit-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 8px 32px rgba(101,30,26,0.18);
}

.benefit-icon {
    width: 65px;
    height: 65px;
    margin-bottom: 1.2rem;
    border-radius: 1rem;
    box-shadow: 0 2px 12px rgba(101,30,26,0.07);
    background: #f8eaea;
    object-fit: contain;
}

.benefit-card h3 {
    color: #651e1a;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    font-family: 'Inter', sans-serif;
}

.benefit-card p {
    color: #6d3b36;
    font-size: 0.98rem;
    font-family: 'Open Sans', sans-serif;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px);}
    to { opacity: 1; transform: translateY(0);}
}

@media (min-width: 600px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 900px) {
    .benefits-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}


.footer-section {
  background: #651e1a;
  color: #fff;
  padding: 48px 0 18px 0;
  font-size: 1rem;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.8rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  text-align: left;
  width: 100%;
  justify-content: center;
}

.footer-logo {
  width: 54px;
  height: 54px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  padding: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.13);
}

.footer-org-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-org-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}
.footer-org-address,
.footer-org-contact {
  font-size: 0.97rem;
  color: #f4eaea;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0.5rem 0 0.5rem 0;
}

.footer-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 2px 8px;
  border-radius: 6px;
  transition: background 0.18s, color 0.18s;
}
.footer-links a:hover,
.footer-links a:focus {
  background: #fff;
  color: #651e1a;
  outline: none;
}

.footer-social {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 0.5rem;
}
.footer-social-icon img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff;
  padding: 4px;
  transition: box-shadow 0.2s;
}
.footer-social-icon:hover img,
.footer-social-icon:focus img {
  box-shadow: 0 2px 10px #fff5;
}

.footer-newsletter {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 0.5rem;
  width: 100%;
  max-width: 400px;
}
.footer-newsletter input[type="email"] {
  padding: 0.6rem 1rem;
  border-radius: 30px;
  border: none;
  font-size: 1rem;
  width: 70%;
  outline: none;
}
.newsletter-btn {
  background: #fff;
  color: #651e1a;
  font-weight: 700;
  border: none;
  border-radius: 30px;
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.newsletter-btn:hover,
.newsletter-btn:focus {
  background: #f9f8fb;
  color: #a13e3a;
}

.footer-bottom {
  margin-top: 1.2rem;
  font-size: 0.97rem;
  color: #f4eaea;
  text-align: center;
  width: 100%;
}


.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}


@media (max-width: 700px) {
  .footer-brand {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.7rem;
  }
  .footer-newsletter {
    flex-direction: column;
    gap: 0.4rem;
    align-items: center;
  }
}


.back-to-top {
  display: none; /* Hidden by default */
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  background: #651e1a;
  color: #fff;
  border: none;
  outline: none;
  border-radius: 50px;
  padding: 0.7rem 1.5rem 0.7rem 1.1rem;
  font-size: 1.15rem;
  font-weight: 700;
  box-shadow: 0 4px 24px rgba(101,30,26,0.17);
  cursor: pointer;
  opacity: 0.92;
  transition: background 0.2s, opacity 0.2s, transform 0.18s;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.back-to-top:hover,
.back-to-top:focus {
  background: #a13e3a;
  opacity: 1;
  transform: translateY(-4px) scale(1.04);
  outline: 2px solid #fff;
}
.back-to-top-icon {
  font-size: 1.35rem;
  display: inline-block;
  vertical-align: middle;
}
.back-to-top-text {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-block;
}


@media (max-width: 600px) {
  .back-to-top {
    bottom: 16px;
    right: 16px;
    font-size: 1rem;
    padding: 0.6rem 1rem 0.6rem 0.8rem;
  }
  .back-to-top-icon { font-size: 1.1rem; }
  .back-to-top-text { font-size: 0.96rem; }
}