/* Self-host Inter regular for core body and UI text. */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/inter-v20-latin-400.woff2') format('woff2');
    font-style: normal;
    font-weight: 400;
    font-display: swap;
}

/* Self-host Inter medium for labels and navigation emphasis. */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/inter-v20-latin-500.woff2') format('woff2');
    font-style: normal;
    font-weight: 500;
    font-display: swap;
}

/* Self-host Inter semibold for headings and CTA text. */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/inter-v20-latin-600.woff2') format('woff2');
    font-style: normal;
    font-weight: 600;
    font-display: swap;
}

/* Self-host Inter bold for strong visual hierarchy. */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/inter-v20-latin-700.woff2') format('woff2');
    font-style: normal;
    font-weight: 700;
    font-display: swap;
}

/* Self-host Hind Siliguri regular for Bengali rendering quality. */
@font-face {
    font-family: 'Hind Siliguri';
    src: url('../fonts/hind-siliguri-v14-bengali-400.woff2') format('woff2');
    font-style: normal;
    font-weight: 400;
    font-display: swap;
}

/* Self-host Hind Siliguri medium for Bengali UI readability. */
@font-face {
    font-family: 'Hind Siliguri';
    src: url('../fonts/hind-siliguri-v14-bengali-500.woff2') format('woff2');
    font-style: normal;
    font-weight: 500;
    font-display: swap;
}

/* Self-host Hind Siliguri semibold for section titles and chips. */
@font-face {
    font-family: 'Hind Siliguri';
    src: url('../fonts/hind-siliguri-v14-bengali-600.woff2') format('woff2');
    font-style: normal;
    font-weight: 600;
    font-display: swap;
}

/* Self-host Hind Siliguri bold for high-emphasis Bengali text. */
@font-face {
    font-family: 'Hind Siliguri';
    src: url('../fonts/hind-siliguri-v14-bengali-700.woff2') format('woff2');
    font-style: normal;
    font-weight: 700;
    font-display: swap;
}

:root {
    --primary-color: #4338ca;
    --secondary-color: #8b5cf6;
    --accent-color: #a855f7;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --bg-light: #f8fafc;
    --gradient-btn: linear-gradient(135deg, #4338ca, #8b5cf6);
    --gradient-hover: linear-gradient(135deg, #3730a3, #7c3aed);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* Keep Inter for Latin text and use Hind Siliguri for Bengali glyph fallback. */
    font-family: 'Inter', 'Hind Siliguri', 'Noto Sans Bengali', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn-gradient {
    border-radius: 8px;
    color: white;
    font-weight: 600;
    background: linear-gradient(270deg, #4338ca, #8b5cf6, #ec4899, #4338ca);
    background-size: 300% 300%;
    animation: gradient-move 4s ease infinite;
    box-shadow: 0 10px 20px -5px rgba(67, 56, 202, 0.4);
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-gradient--sm {
    padding: 10px 25px;
    font-size: 0.95rem;
}

.btn-gradient--lg {
    padding: 15px 35px;
    font-size: 1.1rem;
}

.btn-gradient:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 16px 30px -12px rgba(67, 56, 202, 0.55);
}

/* Watch Demo Button Styles */
.btn-demo {
    margin-left: 10px;
    gap: 8px;
}

@keyframes gradient-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.site-header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(248, 250, 252, 0.9);
    backdrop-filter: blur(10px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-left: auto;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.6);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-dark);
}

.nav-toggle:focus-visible {
    outline: 3px solid rgba(67, 56, 202, 0.35);
    outline-offset: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 26px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    /* Use a transparent container so uploaded logo images do not get boxed background. */
    background-color: transparent;
    color: inherit;
    font-weight: 800;
    padding: 0;
    border-radius: 0;
    font-size: 1.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Keep logo image rendering crisp and prevent inline baseline gap artifacts. */
.logo-icon img {
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: 700;
    font-size: 1.2rem;
    color: #1e1b4b;
}

.tagline {
    font-size: 0.7rem;
    color: var(--text-light);
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.95rem;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.arrow-down {
    position: relative;
    width: 8px;
    height: 8px;
    display: inline-block;
}

.arrow-down::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 6px;
    height: 6px;
    border-left: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-60%) rotate(-45deg);
    transform-origin: center;
}

/* Dropdown Menu Styles */
.nav-item.has-dropdown {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 20px;
    background: #ffffff;
    min-width: 260px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
    border: 1px solid rgba(148, 163, 184, 0.1);
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.nav-item.has-dropdown:hover .dropdown-menu,
.nav-item.has-dropdown .dropdown-menu.is-expanded {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    display: block;
    width: 100%;
    border-bottom: 1px solid rgba(148, 163, 184, 0.15);
    opacity: 0;
    transform: translateX(-10px);
}

.nav-item.has-dropdown:hover .dropdown-menu li,
.nav-item.has-dropdown .dropdown-menu.is-expanded li {
    animation: menuSlideIn 0.3s ease forwards;
}

@keyframes menuSlideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.dropdown-menu li:nth-child(1) { animation-delay: 0.05s; }
.dropdown-menu li:nth-child(2) { animation-delay: 0.1s; }
.dropdown-menu li:nth-child(3) { animation-delay: 0.15s; }
.dropdown-menu li:nth-child(4) { animation-delay: 0.2s; }
.dropdown-menu li:nth-child(5) { animation-delay: 0.25s; }
.dropdown-menu li:nth-child(6) { animation-delay: 0.3s; }
.dropdown-menu li:nth-child(7) { animation-delay: 0.35s; }
.dropdown-menu li:nth-child(8) { animation-delay: 0.4s; }
.dropdown-menu li:nth-child(9) { animation-delay: 0.45s; }
.dropdown-menu li:nth-child(10) { animation-delay: 0.5s; }
.dropdown-menu li:nth-child(11) { animation-delay: 0.55s; }
.dropdown-menu li:nth-child(12) { animation-delay: 0.6s; }
.dropdown-menu li:nth-child(n+13) { animation-delay: 0.65s; }

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    font-size: 0.9rem;
    color: var(--text-dark);
    transition: all 0.2s ease;
    white-space: nowrap;
    width: 100%;
}

.dropdown-menu li a::after {
    content: '➔';
    font-size: 1.1em;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.2s ease;
    color: var(--primary-color);
}

.dropdown-menu li a:hover {
    background: rgba(67, 56, 202, 0.05);
    color: var(--primary-color);
    padding-left: 25px;
}

.dropdown-menu li a:hover::after {
    opacity: 1;
    transform: translateX(0);
}

.section-heading {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 50px;
}

.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, #a855f7, #ec4899, #4338ca);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradient-text 5s ease infinite;
}

@keyframes gradient-text {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@media (max-width: 992px) {
    .navbar {
        flex-wrap: wrap;
        gap: 14px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-menu {
        display: none;
        width: 100%;
        flex-basis: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 14px;
        border-radius: 16px;
        border: 1px solid rgba(148, 163, 184, 0.55);
        background: rgba(248, 250, 252, 0.92);
        backdrop-filter: blur(12px);
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        gap: 0;
        align-items: stretch;
    }

    .nav-links > li {
        border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    }

    .nav-links > li:last-child {
        border-bottom: none;
    }

    .nav-links > li > a {
        padding: 12px 0;
        width: 100%;
    }

    .header-cta .btn {
        width: 100%;
        margin-top: 16px;
    }

    .nav-item.has-dropdown {
        width: 100%;
        display: block;
        height: auto;
    }

    .nav-item.has-dropdown > a {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding: 12px 0;
    }
    
    .dropdown-menu {
        position: static;
        margin-top: 0;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding-left: 20px;
        background: transparent;
        display: none; 
        min-width: 100%;
        padding-top: 5px;
        padding-bottom: 5px;
        border: 0;
        transition: none;
    }

    .dropdown-menu::before {
        display: none;
    }

    .dropdown-menu.is-expanded {
        display: block;
        animation: slideDown 0.3s ease-out forwards;
    }

    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .dropdown-menu li a {
        padding: 8px 0;
        font-size: 0.85rem;
        color: var(--text-light);
    }
    
    .dropdown-menu li a:hover {
        padding-left: 0;
        color: var(--primary-color);
        background: transparent;
    }
}

.site-footer {
    position: relative;
    background: #ffffff;
    color: var(--text-dark);
    margin-top: -1px;
    overflow: hidden;
}

.footer-surface {
    position: relative;
    background: #34349e;
    color: #ffffff;
    overflow: hidden;
}

.footer-wave {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 1;
    pointer-events: none;
}

.footer-wave-svg {
    display: block;
    width: 100%;
    height: 64px;
}

.footer-wave-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 9999px;
    background: #ff9f7e;
    transform: translate(-50%, -50%);
    display: none;
}

.footer-main {
    position: relative;
    z-index: 2;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-main .footer-container {
    position: relative;
    padding-top: 140px;
    padding-bottom: 48px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    font-size: 0.9rem;
}

.footer-col--brand {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand-badge {
    width: 40px;
    height: 40px;
    background: #ffffff;
    color: #34349e;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
}

.footer-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.footer-brand-name {
    font-size: 1.25rem;
    font-weight: 800;
}

.footer-brand-tagline {
    font-size: 0.62rem;
    color: rgba(226, 232, 240, 0.9);
    font-weight: 600;
    letter-spacing: 0.06em;
}

.footer-desc {
    color: rgba(226, 232, 240, 0.92);
    line-height: 1.7;
    max-width: 520px;
}

.footer-social {
    display: flex;
    gap: 14px;
}

.footer-social-link {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: background 0.2s ease, color 0.2s ease;
}

.footer-social-link:hover {
    background: #ffffff;
    color: #34349e;
}

.footer-map {
    width: 100%;
    max-width: 280px;
    height: 132px;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    display: block;
}

.footer-map-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.82;
    transition: opacity 0.25s ease;
}

.footer-map:hover .footer-map-img {
    opacity: 1;
}

.footer-map-pill {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.92);
    color: #34349e;
    padding: 6px 12px;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 800;
    box-shadow: 0 12px 20px rgba(15, 23, 42, 0.25);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.footer-heading {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: rgba(203, 213, 225, 0.95);
    display: inline-block;
    transition: transform 0.2s ease, color 0.2s ease;
}

.footer-link:hover {
    color: #ffffff;
    transform: translateX(4px);
}

.footer-col--split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.footer-contact-icon {
    color: rgba(203, 213, 225, 0.95);
    margin-top: 2px;
    flex: 0 0 auto;
}

.footer-contact-link,
.footer-contact-text {
    color: rgba(203, 213, 225, 0.95);
}

.footer-contact-link:hover {
    color: #ffffff;
}

.footer-contact-phones {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-scroll-top {
    position: absolute;
    right: 20px;
    bottom: 96px;
    width: 42px;
    height: 42px;
    border-radius: 9999px;
    background: #ffffff;
    color: #34349e;
    border: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 14px 24px rgba(15, 23, 42, 0.35);
    transition: transform 0.2s ease;
}

.footer-scroll-top:hover {
    transform: translateY(-4px);
}

.footer-bottom {
    position: relative;
    z-index: 2;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    background: #2b2b84;
}

.footer-bottom-inner {
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: rgba(226, 232, 240, 0.92);
}

.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: center;
}

.footer-bottom-strong {
    font-weight: 700;
    color: #ffffff;
}

.footer-bottom-link {
    text-decoration: underline;
    color: rgba(226, 232, 240, 0.92);
}

.footer-bottom-link:hover {
    color: #ffffff;
}

@media (min-width: 768px) {
    .footer-wave-svg {
        height: 128px;
    }

    .footer-wave-dot {
        display: block;
    }

    .footer-main .footer-container {
        padding-top: 190px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 32px;
        align-items: start;
    }

    .footer-col--split {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-bottom-inner {
        flex-direction: row;
    }
}

@media (min-width: 1024px) {
    .footer-wave-svg {
        height: 192px;
    }

    .footer-grid {
        grid-template-columns: 4fr 2fr 2fr 4fr;
        gap: 44px;
    }
}