@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Outfit', sans-serif; }
body { line-height: 1.6; color: var(--text-dark); background: white; }
a { text-decoration: none; transition: 0.3s; }
ul { list-style: none; }

/* --- Header --- */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 5%; position: fixed; width: 100%; top: 0;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
    z-index: 1000; box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}
.logo { font-size: 1.5rem; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a { color: var(--text-dark); font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

.btn-primary {
    background: var(--primary); color: white; padding: 10px 25px;
    border-radius: 30px; font-weight: 600; box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* --- Hero Section --- */
.hero {
    padding: 140px 5% 80px; display: flex; align-items: center; justify-content: space-between;
    background: linear-gradient(135deg, #eef2ff 0%, #ffffff 100%);
}
.hero-text { max-width: 50%; }
.hero-text h1 { font-size: 3.5rem; line-height: 1.2; margin-bottom: 20px; background: linear-gradient(to right, #4f46e5, #9333ea); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-text p { font-size: 1.1rem; color: var(--text-light); margin-bottom: 30px; }
.hero-img img { max-width: 100%; height: auto; border-radius: 20px; box-shadow: 0 20px 50px rgba(0,0,0,0.1); }

/* --- Stats --- */
.stats { display: flex; justify-content: center; gap: 50px; padding: 40px 5%; margin-top: -50px; position: relative; z-index: 2; }
.stat-box { background: white; padding: 25px 40px; border-radius: 15px; text-align: center; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
.stat-num { font-size: 2rem; font-weight: 700; color: var(--primary); }

/* --- Features --- */
.features { padding: 80px 5%; background: white; text-align: center; }
.sec-title { font-size: 2rem; margin-bottom: 10px; }
.sec-desc { color: var(--text-light); margin-bottom: 50px; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.f-card { padding: 30px; border-radius: 20px; background: var(--bg-light); transition: 0.3s; }
.f-card:hover { transform: translateY(-10px); background: white; box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
.f-icon { font-size: 2.5rem; color: var(--primary); margin-bottom: 20px; }

/* --- CTA --- */
.cta { padding: 80px 5%; background: var(--primary); color: white; text-align: center; }
.cta h2 { font-size: 2.5rem; margin-bottom: 20px; }
.btn-white { background: white; color: var(--primary); padding: 12px 30px; border-radius: 30px; font-weight: 700; display: inline-block; }

/* --- Footer --- */
footer { background: #0f172a; color: white; padding: 50px 5% 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.f-logo { font-size: 1.5rem; font-weight: 700; color: white; margin-bottom: 15px; display: block; }
.f-links li { margin-bottom: 10px; }
.f-links a { color: #94a3b8; }
.f-links a:hover { color: white; }
.copyright { text-align: center; color: #64748b; border-top: 1px solid #1e293b; padding-top: 20px; }

/* --- Mobile --- */
.mobile-menu-btn { display: none; font-size: 1.5rem; cursor: pointer; }
@media (max-width: 768px) {
    .navbar { padding: 15px 5%; }
    .hero { flex-direction: column; padding-top: 100px; text-align: center; }
    .hero-text { max-width: 100%; margin-bottom: 40px; }
    .hero-text h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* Mobile menu JS needed for toggle */
    .stats { flex-direction: column; gap: 15px; }
}

/* Footer Logo Style */
.f-logo img {
    height: 50px; /* লোগোর হাইট */
    width: auto;
    object-fit: contain;
    /* যদি আপনার লোগো কালো হয় এবং ফুটার কালো হয়, তাহলে লোগো সাদা করতে নিচের ফিল্টারটি ব্যবহার করতে পারেন */
    /* filter: brightness(0) invert(1); */ 
}

.f-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: 0.3s;
}

.f-links a:hover {
    color: white;
    padding-left: 5px; /* হোভার করলে একটু ডানে সরবে */
}