/* --- Global Variables & Reset --- */
:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #38bdf8;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --glow: 0 0 20px rgba(99, 102, 241, 0.5);
}

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

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* প্রাইসিং কার্ডের ভেতরের প্রাইমারি বাটন ঠিক করার জন্য */
.price-card .btn-primary {
    display: block;
    width: 100%;
    text-align: center;
}

/* --- Buttons --- */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    transition: 0.3s;
    box-shadow: var(--glow);
    display: inline-block;
}

/* --- Buttons --- */
.btn-primary_two {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 400;
    transition: 0.3s;
    box-shadow: var(--glow);
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 25px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 8px;
    display: block;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    font-weight: 600;
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* --- Navbar --- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 15px 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.logo span { color: var(--accent-color); }

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

.nav-links a {
    font-weight: 500;
    color: var(--text-muted);
    transition: 0.3s;
}

.nav-links a:hover { color: var(--accent-color); }

/* --- Hero Section --- */
.hero-section {
    position: relative;
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99,102,241,0.3) 0%, rgba(15,23,42,0) 70%);
    z-index: -1;
}

.badge {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.hero-section h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(to right, var(--accent-color), var(--secondary-color));
    -webkit-background-clip: text;
    color: transparent;
}

.hero-section p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* --- Stats Bar --- */
.stats-bar {
    background: rgba(30, 41, 59, 0.5);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 30px 0;
}

.stats-grid {
    display: flex;
    justify-content: space-around;
    text-align: center;
    flex-wrap: wrap;
    gap: 20px;
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-item h3 { font-size: 1.8rem; }
.stat-item p { color: var(--text-muted); }

/* --- Special Offer --- */
.special-offer {
    padding: 80px 0;
}

.offer-box {
    background: linear-gradient(135deg, #1e1b4b, #312e81);
    border-radius: 20px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(49, 46, 129, 0.4);
}

.offer-content { flex: 1; z-index: 2; }

.offer-tag {
    background: #ef4444;
    color: white;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
}

.offer-content h2 {
    margin: 15px 0;
    font-size: 2rem;
}

.offer-features li {
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.offer-features i { color: #4ade80; }

.offer-price {
    text-align: center;
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    min-width: 200px;
}

.offer-price h3 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.btn-glow {
    background: white;
    color: var(--primary-color);
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: bold;
    text-transform: uppercase;
    animation: pulse 2s infinite;
    display: inline-block;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

/* --- Pricing Section --- */
.pricing-section {
    padding: 80px 0;
    background: #0b1120;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 { font-size: 2.5rem; color: white; }
.section-title p { color: var(--text-muted); }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.price-card {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 30px;
    position: relative;
    transition: 0.3s;
}

.price-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.popular {
    background: linear-gradient(160deg, #1e293b, #282e46);
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.popular:hover { transform: scale(1.05) translateY(-5px); }

.popular-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.card-header { text-align: center; margin-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 20px; }
.card-header h3 { font-size: 1.4rem; color: white; margin-bottom: 10px; }
.card-header .price { font-size: 2rem; font-weight: 700; color: var(--accent-color); }

.price-card .features li {
    margin-bottom: 15px;
    color: var(--text-muted);
    font-size: 0.95rem;
    text-align: center;
}

/* --- Features Section --- */
.features-section { padding: 80px 0; }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-box {
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,0.02);
    border-radius: 15px;
    transition: 0.3s;
    border: 1px solid transparent;
}

.feature-box:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--accent-color);
}

.feature-box i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.feature-box h3 { margin-bottom: 10px; color: white; }
.feature-box p { color: var(--text-muted); font-size: 0.9rem; }

/* --- Footer --- */
footer {
    background: #020617;
    padding: 30px 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.social-links a {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-left: 15px;
    transition: 0.3s;
}

.social-links a:hover { color: var(--primary-color); }

/* --- Responsive Media Queries --- */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Mobile Menu hidden for simplicity */
    
    .hero-section h1 { font-size: 2.2rem; }
    
    .offer-box { flex-direction: column; text-align: center; gap: 30px; }
    
    .offer-features li { justify-content: center; }
    
    .popular { transform: scale(1); }
    .popular:hover { transform: translateY(-5px); }
    
    .footer-content { flex-direction: column; text-align: center; }
}