:root {
    --navy: #0a1931;
    --warning: #ffc107;
    --white: #ffffff;
}

body {
    font-family: 'Hind Siliguri', sans-serif;
    color: #333;
    background-color: #fff;
}

/* Utils */
.bg-navy { background-color: var(--navy) !important; }
.text-navy { color: var(--navy); }
.btn-navy { background-color: var(--navy); color: #fff; border-radius: 4px; }
.btn-navy:hover { background-color: #0d2a4a; color: #fff; }

/* Top Bar */
.top-bar { background-color: var(--navy); border-bottom: 1px solid rgba(255,255,255,0.1); }

/* Navigation */
.navbar .nav-link { color: var(--navy) !important; font-size: 15px; margin: 0 5px; }
.navbar .nav-link.active, .navbar .nav-link:hover { color: var(--warning) !important; }

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(10, 25, 49, 0.85), rgba(10, 25, 49, 0.85)), url('https://images.unsplash.com/photo-1551808525-51a94da548ce?auto=format&fit=crop&w=1500&q=80');
    background-size: cover;
    background-position: center;
    padding: 80px 0;
}

.contact-card { border-top: 5px solid var(--warning); border-radius: 8px !important; }

/* ============================================
   FIXED SERVICES SECTION CSS
=============================================== */
.services-section .service-box {
    background: #fff;
    padding: 30px 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
    text-align: center;
    border-bottom: 3px solid var(--warning);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.services-section .service-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.services-section .service-icon {
    font-size: 40px;
    color: var(--navy);
    margin-bottom: 15px;
}

.services-section .service-box h6 {
    font-weight: bold;
    color: var(--navy);
    margin-bottom: 0;
    font-size: 16px;
}

/* Grayscale Clients */
.grayscale { filter: grayscale(100%); opacity: 0.6; transition: 0.3s; }
.grayscale:hover { filter: grayscale(0%); opacity: 1; }

/* Accordion */
.accordion-button:not(.collapsed) { background-color: var(--warning); color: var(--navy); }

/* Footer */
footer { border-top: 5px solid var(--warning); }

/* Clients Section Styling */
.clients-section {
    background-color: #ffffff;
}

.client-item {
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px; /* লোগোর উচ্চতা নির্দিষ্ট করা হলো */
}

.grayscale-img {
    max-height: 50px; /* লোগোগুলো যাতে সমান সাইজের দেখায় */
    width: auto;
    filter: grayscale(100%); /* লোগো সাদা-কালো করবে */
    opacity: 0.6; /* কিছুটা ঝাপসা করবে */
    transition: all 0.4s ease-in-out;
}

.client-item:hover .grayscale-img {
    filter: grayscale(0%); /* মাউস নিলে অরিজিনাল কালার আসবে */
    opacity: 1; /* উজ্জ্বলতা বাড়বে */
    transform: scale(1.1); /* হালকা বড় হবে */
}

/* মোবাইল রেসপন্সিভ এর জন্য */
@media (max-width: 768px) {
    .grayscale-img {
        max-height: 40px;
    }
}
/* About Us & Video Section Custom Styles */
.about-video-section .text-navy {
    color: #0a1931;
}

.experience-circle {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 3px solid #ffc107;
    text-align: center;
    transition: 0.3s;
}

.experience-circle:hover {
    transform: rotate(10px) scale(1.05);
    background-color: #0d2a4a;
}

.video-container {
    background: #000;
    transition: 0.4s;
}

.video-container:hover {
    transform: scale(1.02);
}

.transition-all {
    transition: all 0.3s ease;
}

.transition-all:hover {
    background-color: #ffc107 !important;
    color: #0a1931 !important;
    padding-left: 30px !important;
}

/* আই ফ্রেম মোবাইল রেসপনসিভ */
@media (max-width: 768px) {
    .experience-circle {
        width: 80px;
        height: 80px;
    }
    .video-container iframe {
        height: 250px;
    }
}