/* General Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    color: #333;
    line-height: 1.6;
    background-color: #f9f9f9;
    overflow-x: hidden;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}
section {
    padding: 60px 0;
}
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #0b2545;
}
.section-subtitle {
    text-align: center;
    color: #666;
    margin-top: -25px;
    margin-bottom: 30px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Navbar */
.navbar {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo img {
    max-height: 45px;
    width: auto;
}
.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}
.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    transition: color 0.3s;
}
.nav-links a:hover {
    color: #134074;
}
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #0b2545;
}

/* Hero Fullscreen Section */
.hero-fullscreen-section {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.hero-bg-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.5s ease-in-out, transform 6s ease-in-out;
    transform: scale(1);
}
.hero-slide.active {
    opacity: 1;
    z-index: 2;
    transform: scale(1.06);
}
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(5, 15, 35, 0.7), rgba(5, 15, 35, 0.5));
    z-index: 3;
}
.hero-content-wrapper {
    position: relative;
    z-index: 4;
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: flex-start;
}
.hero-text-container {
    max-width: 750px;
    color: #ffffff;
}
.hero-heading {
    font-size: 45px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
}
.hero-subheading {
    font-size: 19px;
    line-height: 1.6;
    margin-bottom: 25px;
    color: #e2e8f0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.hero-badges {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}
.hero-badges img {
    max-height: 55px;
    width: auto;
}
.hero-action-btn {
    display: inline-block;
    background-color: #154059;
    color: #ffffff;
    padding: 15px 36px;
    font-size: 17px;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}
.hero-action-btn:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 123, 255, 0.7);
}

/* About Section */
.about-section {
    background: #fff;
    text-align: center;
}
.lead-text {
    font-size: 1.15rem;
    color: #444;
    max-width: 850px;
    margin: 0 auto 30px auto;
    line-height: 1.8;
}
.about-grid {
    max-width: 900px;
    margin: 0 auto;
}
.about-text p {
    font-size: 1.05rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.7;
}

/* Image Slider Section */
.slider-section {
    background: #f0f4f8;
    overflow: hidden;
}
.slider-container {
    width: 100%;
    overflow: hidden;
    position: relative;
}
.slider-track {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scrollSlider 30s linear infinite;
}
.slider-track:hover {
    animation-play-state: paused;
}
.slide {
    width: 320px;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    padding-bottom: 10px;
    flex-shrink: 0;
}
.slide img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
@keyframes scrollSlider {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Services Section */
.services-section {
    background: #fff;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.service-card {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #e1e1e1;
    transition: transform 0.3s, box-shadow 0.3s;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}
.service-card i {
    font-size: 2.5rem;
    color: #134074;
    margin-bottom: 15px;
}
.service-card h3 {
    margin-bottom: 15px;
    color: #0b2545;
}
.service-card p {
    color: #666;
    margin-bottom: 15px;
}
.read-more-btn {
    background: none;
    border: none;
    color: #134074;
    font-weight: bold;
    cursor: pointer;
    padding: 0;
}

/* Port Status Section */
.port-status-section {
    background: #eef4f8;
}
.port-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.port-card {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}
.port-card i {
    font-size: 2rem;
    color: #134074;
    margin-bottom: 15px;
}

/* Why Us Section */
.why-us-section {
    background: #fff;
}
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    text-align: center;
}
.why-item {
    padding: 20px;
}
.why-item i {
    font-size: 2.5rem;
    color: #8da9c4;
    margin-bottom: 15px;
}

/* Testimonials */
.testimonials-section {
    background: #f4f6f8;
}
.testimonial-grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 800px;
    margin: 0 auto;
}
.testimonial-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
}
.testimonial-card img {
    max-width: 120px;
    margin: 0 auto 15px auto;
}
.testimonial-card h4 {
    margin-top: 15px;
    color: #134074;
}
.testimonial-card p {
    color: #555;
    margin-bottom: 15px;
    line-height: 1.7;
}

/* Clients Section */
.clients-section {
    background: #fff;
}
.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    align-items: center;
}
.client-box {
    background: #f9f9f9;
    padding: 20px 10px;
    text-align: center;
    border-radius: 6px;
    border: 1px solid #eee;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.client-box img {
    max-width: 90px;
    height: 45px;
    object-fit: contain;
    margin-bottom: 10px;
}

/* Query Section */
.query-section {
    background-color: #f8f9fa;
    padding: 60px 0;
}
.query-container {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}
.query-header {
    text-align: center;
    margin-bottom: 30px;
}
.query-header h2 {
    font-size: 30px;
    color: #333333;
    margin-bottom: 10px;
}
.query-header p {
    color: #666666;
    font-size: 15px;
}
.query-form {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.form-group {
    flex: 1 1 calc(50% - 10px);
    display: flex;
    flex-direction: column;
}
.form-group.full-width {
    flex: 1 1 100%;
}
.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #444444;
    font-size: 14px;
}
.form-group input,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    width: 100%;
    transition: border-color 0.3s ease;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #0b2545;
}
.form-submit.full-width {
    flex: 1 1 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 10px;
}
.submit-btn {
    background-color: #0b2545;
    color: #ffffff;
    border: none;
    padding: 12px 35px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.submit-btn:hover {
    background-color: #0056b3;
}

/* Footer */
.footer {
    background: #0b2545;
    color: #fff;
    padding: 50px 0 20px;
}
.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}
.footer-col {
    flex: 1;
    min-width: 280px;
}
.footer-col h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}
.footer-col p {
    margin-bottom: 12px;
    color: #ccc;
    font-size: 0.95rem;
}
.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    color: #aaa;
    font-size: 0.9rem;
}

/* WhatsApp Floating Button */
.whatsapp-float-btn {
    position: fixed !important;
    width: 100px;
    height: 100px;
    bottom: 30px;
    right: 30px;

    border-radius: 50%;
    text-align: center;

    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
}
.whatsapp-float-btn img {
    width: 100px !important;
    height: 100px !important;
    object-fit: contain;
}
.whatsapp-float-btn:hover {
 
    transform: scale(1.1);
 4
}

/* Responsive Queries */
@media (max-width: 992px) {
    .hero-heading {
        font-size: 38px;
    }
    .hero-subheading {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px 0;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        text-align: center;
        gap: 15px;
    }
    .nav-links.active {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }

    .hero-fullscreen-section {
        height: 85vh;
        min-height: 500px;
    }
    .hero-content-wrapper {
        justify-content: center;
        text-align: center;
    }
    .hero-heading {
        font-size: 26px;
    }
    .hero-subheading {
        font-size: 14px;
        margin-bottom: 25px;
    }
    .hero-badges {
        justify-content: center;
    }
    .hero-badges img {
        max-height: 45px;
    }
    .hero-action-btn {
        padding: 12px 28px;
        font-size: 15px;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    .form-group {
        flex: 1 1 100%;
    }
    .query-container {
        padding: 20px;
    }
    
    .whatsapp-float-btn {
        width: 100px;
        height: 100px;
        bottom: 20px;
        right: 20px;
    }
    .whatsapp-float-btn img {
        width: 30px !important;
        height: 30px !important;
    }
}

/* Fixed Floating WhatsApp Button */
.whatsapp-float-btn {
    position: fixed !important;
    width: 100px !important;
    height: 100px !important;
    bottom: 25px !important;
    right: 25px !important;

    border-radius: 50% !important;
    text-align: center !important;
  
    z-index: 1999999 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: hidden !important;
    transition: all 0.3s ease-in-out !important;
}

.whatsapp-float-btn img {
    width: 150px !important;
    height: 150px !important;
    object-fit: contain !important;
    display: block !important;
}

.whatsapp-float-btn:hover {
  
    transform: scale(1.1) !important;
}

/* মোবাইল ডিভাইসের জন্য নির্দিষ্ট সাইজ ও পজিশন */
@media (max-width: 768px) {
    .whatsapp-float-btn {
        width: 100px !important;
        height: 100px !important;
        bottom: 20px !important;
        right: 20px !important;
    }
    .whatsapp-float-btn img {
        width: 100px !important;
        height: 100px !important;
    }
}