@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@300;400;500;600;700&display=swap');
body {
font-family: "Hind Siliguri", sans-serif;
}
html {
    scroll-behavior: smooth;
}
div{
scroll-margin-top: 180px;
}

/* Modern gray scrollbar */
::-webkit-scrollbar {
    width: 10px;
    /* slightly larger */
    height:9px;
}

::-webkit-scrollbar-track {
    background: #eff1f5;
    /* very light gray track */
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background-color: #cbd5e1;
    /* soft gray thumb */
    border-radius: 10px;
    border: 1px solid #f3f4f6;
    /* space around thumb for subtle look */
}

::-webkit-scrollbar-thumb:hover {
    background-color: #94a3b8;
    /* slightly darker gray on hover */
}
.arrow_top{
    position: relative;
}

.arrow_top::after {
    content: '';
    width: 13px;
    height: 13px;
    background: #fff;
    position: absolute;
    top: -7px;
    right: 16px;
    transform: rotate(45deg);
    border-top: 1px solid #cccccc;
    border-left: 1px solid #cccccc;
    z-index: -8;
}

@media (max-width:767px) {
    .arrow_top::after {
        right: 56px;
    }
}

.shadow-c {
    box-shadow: rgba(22, 23, 24, 0.1) 0px 2px 9px 3px,
        rgba(22, 24, 24, 0.06) 0px 2px 4px -1px;
}

.text-md{
    font-size: 15px;
}

.animation-pulse {
    display: flex;
    justify-content: center;
    border-radius: 100%;
    transition: all .3s ease-in-out 0s;
    box-shadow: 0 0 0 0 rgba(217, 193, 246, 0.698);
    animation: pulse 2.5s cubic-bezier(.8, 0, 0, 1) 0s infinite normal none running;
    align-items: center;
    border: 0
}

.animation-pulse:is(:hover, :focus) {
    transform: scale(1.1)
}

@keyframes pulse {
    to {
        box-shadow: 0 0 0 23px rgba(217, 193, 246, 0)
    }
}

header nav a{
    position: relative;
}

header nav a:not(.not-before)::before {
    content: '';
    position: absolute;
    height: 2px;
    width: 100%;
    left: 0;
    bottom: -2px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.7s ease;
    border-radius: 2px;
}

header nav a:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}



.description_content {
    /* বাংলা + English */
    font-size: 16px;
    line-height: 1.8 !important;
    color: #1f2937;
    /* slate-800 */
}

.description_content h1,
.description_content h2,
.description_content h3 {
    font-weight: 700;
    margin: 1.2em 0 0.6em;
    line-height: 1.4 !important;
}
.description_content span{
    line-height: 24px !important;
}

.description_content h1 {
    font-size: 28px;
}

.description_content h2 {
    font-size: 24px;
}

.description_content h3 {
    font-size: 20px;
}

.description_content p {
    margin: 0.8em 0;
}

.description_content strong {
    font-weight: 600;
    color: #111827;
    /* darker text */
}

.description_content ul,
.description_content ol {
    padding-left: 1.5em;
    margin: 0.8em 0;
}

.description_content li {
    margin-bottom: 0.5em;
}

.description_content hr {
    border: none;
    border-top: 1px solid #e5e7eb;
    /* slate-200 */
    margin: 1.5em 0;
}

.class-card {
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px -5px rgba(59, 130, 246, 0.15), 0 8px 10px -6px rgba(59, 130, 246, 0.1);
}

.class-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.4);

}


.swiper-button-next:after,
.swiper-rtl .swiper-button-prev:after,
.swiper-button-prev:after,
.swiper-rtl .swiper-button-next:after {
    font-size: 18px !important;
    color: white !important;
}


/* Base bullets */
.swiper-pagination-bullet {
    position: relative;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--color-secondary, #f59e0b);
    opacity: 0.8;
    transition: all 0.3s ease;
    cursor: pointer;
}

/* Hover effect */
.swiper-pagination-bullet:hover {
    transform: scale(1.15);
    opacity: 1;
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.5);
}

/* Active bullet with pulse */
.swiper-pagination-bullet-active {
    background: var(--color-secondary, #f59e0b);
    border-color: var(--color-secondary, #f59e0b);
    transform: scale(1.3);
    opacity: 1;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.6);
    animation: swiper-pulse 1.5s infinite;
}

/* Pulse animation */
@keyframes swiper-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(245, 158, 11, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
    }
}