/* =========================================
   4-COLOR PALETTE SYSTEM
   1. Pure White: #ffffff
   2. Deep Navy Blue: #0f172a
   3. Vibrant Orange: #ff6500
   4. Icy Blue: #e0f2fe
========================================= */
:root {
    --white: #ffffff;
    --navy-blue: #0f172a;
    --navy-blue-hover: #1e293b;
    --orange-vibrant: #ff6500;
    --orange-hover: #e05800;
    --icy-blue: #e0f2fe;
    --icy-blue-bg: #f4f9ff;
    --text-main: #0f172a;
    --text-muted: #475569;
    --border-color: #cbd5e1;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Hind Siliguri', sans-serif; }

body { background-color: var(--white); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }

/* =========================================
   Navbar & Mobile Menu
========================================= */
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 16px 5%; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(12px); position: fixed; width: 100%; top: 0; z-index: 1000; border-bottom: 1px solid var(--icy-blue); box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03); }
.brand-logo { height: 42px; width: auto; }
.nav-container { display: flex; align-items: center; gap: 35px; }
.nav-links { list-style: none; display: flex; gap: 25px; }
.nav-links a { color: var(--navy-blue); text-decoration: none; font-size: 16px; font-weight: 600; transition: color 0.3s ease; }
.nav-links a:hover { color: var(--orange-vibrant); }
.nav-buttons { display: flex; gap: 12px; }

/* Buttons System */
.btn { padding: 10px 22px; border-radius: 30px; text-decoration: none; font-size: 15px; font-weight: 600; transition: all 0.3s ease; cursor: pointer; display: inline-block; text-align: center; }
.btn-orange { background: var(--orange-vibrant); color: var(--white); border: 2px solid var(--orange-vibrant); box-shadow: 0 4px 12px rgba(255, 101, 0, 0.25); }
.btn-orange:hover { background: var(--orange-hover); border-color: var(--orange-hover); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--navy-blue); border: 2px solid var(--border-color); }
.btn-outline:hover { border-color: var(--orange-vibrant); color: var(--orange-vibrant); }
.btn-navy-outline { background: var(--white); color: var(--navy-blue); border: 2px solid var(--navy-blue); }
.btn-navy-outline:hover { background: var(--navy-blue); color: var(--white); }

/* Mobile Hamburger Toggle Icon */
.menu-toggle { display: none; flex-direction: column; justify-content: space-between; width: 28px; height: 20px; cursor: pointer; z-index: 1001; }
.menu-toggle span { height: 3px; width: 100%; background: var(--navy-blue); border-radius: 3px; transition: all 0.3s ease; }
.menu-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* =========================================
   Hero Section
========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center; /* ফাকা জায়গা দূর করার জন্য center */
    padding: 130px 5% 60px;
    background: linear-gradient(135deg, var(--icy-blue) 0%, var(--white) 80%);
    position: relative;
    gap: 60px; 
}
.hero-content { flex: 1; max-width: 580px; }
.hero-tag { display: inline-block; background: var(--white); color: var(--orange-vibrant); padding: 6px 16px; border-radius: 20px; font-size: 14px; font-weight: 700; margin-bottom: 15px; border: 1px solid var(--icy-blue); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04); }
.hero h1 { font-size: 3.2rem; line-height: 1.2; margin-bottom: 20px; font-weight: 700; color: var(--navy-blue); }
.hero p { color: var(--text-muted); font-size: 1.15rem; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 15px; margin-bottom: 35px; }
.stats p { font-size: 1rem; color: var(--text-muted); }
.stats strong { color: var(--navy-blue); }

/* Hero Carousel Slider */
.hero-slider-container {
    flex: 1; position: relative; max-width: 580px; height: 480px; border-radius: 24px; overflow: hidden; box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08); border: 4px solid var(--white); background-color: var(--icy-blue);
}
.slider { width: 100%; height: 100%; position: relative; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 0.8s ease-in-out; }
.slide.active { opacity: 1; z-index: 1; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.slide-caption { position: absolute; bottom: 20px; left: 20px; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(8px); padding: 10px 20px; border-radius: 12px; font-weight: 600; color: var(--navy-blue); border: 1px solid var(--icy-blue); }
.slider-dots { position: absolute; bottom: 20px; right: 20px; z-index: 2; display: flex; gap: 8px; }
.dot { width: 12px; height: 12px; background: rgba(255, 255, 255, 0.6); border-radius: 50%; cursor: pointer; transition: 0.3s; }
.dot.active { background: var(--orange-vibrant); transform: scale(1.3); }

/* =========================================
   Packages Section & Card Slider
========================================= */
.packages-section { padding: 90px 5%; background: var(--icy-blue-bg); text-align: center; }
.packages-section h2 { font-size: 2.5rem; color: var(--navy-blue); margin-bottom: 10px; }
.section-subtitle { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 50px; }
.package-category { margin-bottom: 50px; }
.mt-50 { margin-top: 50px; }
.category-title { font-size: 1.5rem; color: var(--navy-blue); margin-bottom: 35px; display: inline-block; border-bottom: 3px solid var(--orange-vibrant); padding-bottom: 6px; }

.package-slider-wrapper { position: relative; max-width: 1080px; margin: 0 auto; display: flex; align-items: center; }
.pricing-cards { display: flex; gap: 30px; overflow-x: auto; scroll-behavior: smooth; scroll-snap-type: x mandatory; padding: 30px 10px 50px; -ms-overflow-style: none; scrollbar-width: none; width: 100%; }
.pricing-cards::-webkit-scrollbar { display: none; }

.price-card { background: var(--white); border: 1px solid var(--border-color); border-radius: 20px; padding: 40px 30px; min-width: 320px; flex: 0 0 auto; scroll-snap-align: center; text-align: center; position: relative; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.price-card:hover { transform: translateY(-8px); box-shadow: 0 20px 35px rgba(15, 23, 42, 0.08); border-color: var(--orange-vibrant); }
.price-card.popular { border: 2px solid var(--orange-vibrant); box-shadow: 0 12px 30px rgba(255, 101, 0, 0.12); }
.price-card.popular:hover { transform: translateY(-6px); }

.price-badge { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background: var(--orange-vibrant); color: var(--white); padding: 5px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 700; }
.pack-name { font-size: 1.3rem; font-weight: 700; color: var(--navy-blue); margin-bottom: 15px; }
.pack-price { font-size: 2.8rem; font-weight: 700; color: var(--navy-blue); margin-bottom: 25px; }
.pack-price span { font-size: 1rem; color: var(--text-muted); font-weight: 500; }
.pack-features { list-style: none; margin-bottom: 30px; text-align: left; }
.pack-features li { margin-bottom: 12px; color: var(--text-muted); font-size: 0.95rem; position: relative; padding-left: 26px; }
.pack-features li::before { content: '✔'; position: absolute; left: 0; color: var(--orange-vibrant); font-weight: bold; }

.slider-btn { background: var(--white); color: var(--navy-blue); border: 2px solid var(--border-color); width: 45px; height: 45px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; cursor: pointer; position: absolute; top: 50%; transform: translateY(-50%); z-index: 10; transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.slider-btn:hover { background: var(--orange-vibrant); color: var(--white); border-color: var(--orange-vibrant); }
.prev-btn { left: -25px; }
.next-btn { right: -25px; }

/* =========================================
   Services Section
========================================= */
.services { padding: 90px 5%; text-align: center; background: var(--white); }
.services h2 { font-size: 2.5rem; margin-bottom: 50px; color: var(--navy-blue); }
.card-container { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.card { background: var(--icy-blue-bg); padding: 40px 30px; border-radius: 20px; width: 330px; text-align: left; position: relative; border: 1px solid var(--icy-blue); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card:hover { transform: translateY(-8px); border-color: var(--orange-vibrant); box-shadow: 0 15px 30px rgba(15, 23, 42, 0.06); }
.card-badge { position: absolute; top: 20px; right: 20px; padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 700; }
.speed-badge { background: #dcfce7; color: #166534; }
.coverage-badge { background: var(--icy-blue); color: #0369a1; }
.partner-badge { background: #fff7ed; color: #c2410c; }
.card-icon { width: 58px; height: 58px; background: var(--white); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04); }

/* =========================================
   Partner & Network Stats Section
========================================= */
.partner-stats-section { padding: 100px 5%; background: linear-gradient(135deg, var(--icy-blue-bg) 0%, var(--white) 100%); text-align: center; border-top: 1px solid var(--icy-blue); border-bottom: 1px solid var(--icy-blue); }
.partner-content h2 { font-size: 2.8rem; color: var(--navy-blue); margin-bottom: 15px; font-weight: 700; }
.partner-content p { color: var(--text-muted); font-size: 1.15rem; max-width: 700px; margin: 0 auto 50px; }
.stats-container { display: flex; justify-content: center; flex-wrap: wrap; gap: 30px; margin-bottom: 50px; }
.stat-box { background: var(--white); padding: 40px 30px; border-radius: 20px; min-width: 220px; box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04); border: 1px solid var(--icy-blue); transition: transform 0.3s ease, border-color 0.3s ease; }
.stat-box:hover { transform: translateY(-8px); border-color: var(--orange-vibrant); box-shadow: 0 20px 40px rgba(255, 101, 0, 0.08); }
.stat-number-wrapper { display: flex; justify-content: center; align-items: baseline; margin-bottom: 10px; }
.stat-number { font-size: 3.5rem; font-weight: 700; color: var(--orange-vibrant); line-height: 1; }
.stat-plus { font-size: 2.5rem; font-weight: 700; color: var(--orange-vibrant); }
.stat-box p { font-size: 1.2rem; font-weight: 600; color: var(--navy-blue); }
.partner-action { margin-top: 20px; }
.btn-large { padding: 16px 45px; font-size: 1.2rem; box-shadow: 0 10px 25px rgba(255, 101, 0, 0.2); }

/* =========================================
   Video Feedback Section
========================================= */
.video-feedback-section { padding: 90px 5%; background: var(--white); text-align: center; }
.feedback-header h2 { font-size: 2.5rem; color: var(--navy-blue); margin-bottom: 10px; font-weight: 700; }
.feedback-header p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 50px; }
.video-slider-wrapper { position: relative; max-width: 1100px; margin: 0 auto; display: flex; align-items: center; }
.video-cards { display: flex; gap: 25px; overflow-x: auto; scroll-behavior: smooth; scroll-snap-type: x mandatory; padding: 20px 10px 40px; -ms-overflow-style: none; scrollbar-width: none; width: 100%; }
.video-cards::-webkit-scrollbar { display: none; }

.video-card { min-width: 280px; aspect-ratio: 9 / 16; background: #000; border-radius: 20px; overflow: hidden; position: relative; scroll-snap-align: center; box-shadow: 0 15px 30px rgba(15, 23, 42, 0.1); transition: transform 0.3s ease; flex: 0 0 auto; border: 2px solid var(--icy-blue); }
.video-card:hover { transform: translateY(-8px); border-color: var(--orange-vibrant); box-shadow: 0 20px 40px rgba(255, 101, 0, 0.15); }
.video-card video { width: 100%; height: 100%; object-fit: cover; }
.video-info { position: absolute; bottom: 0; left: 0; width: 100%; background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent); padding: 30px 20px 15px; text-align: left; pointer-events: none; }
.video-info h4 { color: var(--white); font-size: 1.2rem; margin-bottom: 2px; }
.video-info p { color: var(--orange-vibrant); font-size: 0.9rem; font-weight: 600; margin: 0; }


/* =========================================
   Responsive 100% Fixes (Updated to 1200px)
========================================= */
@media (max-width: 1200px) {
    .navbar { padding: 15px 5%; }
    .menu-toggle { display: flex; }
    .nav-container { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: var(--white); padding: 30px 20px; box-shadow: 0 15px 30px rgba(15, 23, 42, 0.1); border-bottom: 2px solid var(--orange-vibrant); gap: 25px; transform: translateY(-150%); opacity: 0; visibility: hidden; transition: all 0.4s ease-in-out; }
    .nav-container.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-links { flex-direction: column; align-items: center; gap: 18px; }
    .nav-buttons { flex-direction: column; width: 100%; max-width: 280px; margin: 0 auto; gap: 12px; }

    .hero { flex-direction: column; padding-top: 130px; padding-bottom: 60px; text-align: center; min-height: auto; gap: 40px; }
    .hero-content { margin: 0 auto; max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero-slider-container { flex: none; width: 100%; max-width: 600px; height: 420px; margin: 0 auto; }

    .prev-btn { left: 5px; }
    .next-btn { right: 5px; }

    .stats-container { gap: 20px; }
    .stat-box { min-width: 200px; padding: 30px 20px; }
    .stat-number { font-size: 3rem; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .hero-slider-container { height: 300px; }
    
    .price-card { min-width: 280px; }
    .card { width: 100%; max-width: 400px; }

    .partner-content h2 { font-size: 2.2rem; }
    .stat-box { width: 45%; min-width: 140px; padding: 25px 15px; }
    .stat-number { font-size: 2.5rem; }
    .stat-plus { font-size: 1.8rem; }
    .btn-large { width: 100%; max-width: 350px; }

    .video-card { min-width: 260px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-slider-container { height: 220px; border-width: 2px; }
    .hero-actions { flex-direction: column; gap: 12px; }
    .hero-actions .btn { width: 100%; }
    
    .price-card { min-width: 250px; padding: 30px 20px; }
    .stat-box { width: 100%; max-width: 350px; margin: 0 auto; }
}


/* =========================================
   Contact Section
========================================= */
.contact-section {
    padding: 100px 5%;
    background: var(--icy-blue-bg);
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.05);
    border: 1px solid var(--border-color);
}

.contact-info {
    flex: 1;
    padding: 50px;
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-hover) 100%);
    color: var(--white);
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--white);
}

.contact-info > p {
    color: #94a3b8; /* Light slate text */
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.info-icon {
    width: 45px;
    height: 45px;
    background: rgba(255, 101, 0, 0.15);
    color: var(--orange-vibrant);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.info-item h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--white);
}

.info-item p {
    color: #cbd5e1;
    margin-bottom: 2px;
}

/* Contact Form */
.contact-form-wrapper {
    flex: 1;
    padding: 50px;
    background: var(--white);
}

.contact-form h3 {
    font-size: 1.8rem;
    color: var(--navy-blue);
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--white);
    color: var(--text-main);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--orange-vibrant);
    box-shadow: 0 0 0 3px rgba(255, 101, 0, 0.1);
}

.btn-full {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
}

/* =========================================
   Professional Dark Footer
========================================= */
.footer {
    background: var(--navy-blue);
    color: var(--white);
    padding-top: 80px;
}

.footer-top {
    padding: 0 5% 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-logo {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}
.footer-logo span {
    color: var(--orange-vibrant);
}

.footer-brand p {
    color: #94a3b8;
    margin-bottom: 25px;
    font-size: 1rem;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--orange-vibrant);
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: 25px;
    color: var(--white);
    position: relative;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 40px;
    height: 3px;
    background: var(--orange-vibrant);
    border-radius: 2px;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--orange-vibrant);
    padding-left: 5px; /* Hover effect */
}

.footer-bottom {
    text-align: center;
    padding: 25px 5%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: #0b1120; /* Slightly darker than navy blue */
    color: #64748b;
    font-size: 0.95rem;
}

/* =========================================
   Responsive for Contact & Footer
========================================= */
@media (max-width: 991px) {
    .contact-container {
        flex-direction: column;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .contact-info, .contact-form-wrapper {
        padding: 40px 25px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .footer-brand p {
        max-width: 100%;
    }
}