body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

a { text-decoration: none; transition: 0.2s; }
ul { list-style: none; padding: 0; }

/* --- MODERN NAVBAR --- */
.navbar {
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%;
    height: 90px; 
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    box-sizing: border-box;
    z-index: 1000;

    /* Initial State: Transparent */
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease-in-out; 
}

/* The "Scrolled" State (Glassmorphism) */
.navbar.scrolled {
    height: 70px; 
    background: rgba(var(--bg-dark-rgb), 0.85); 
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(var(--tint-rgb), 0.05);
    box-shadow: 0 10px 30px rgba(var(--black-rgb), 0.1);
}

.nav-links { display: flex; gap: 40px; align-items: center; }
.nav-links a {
    color: var(--text-dim);
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    transition: color 0.3s;
}

/* Modern Hover Underline Animation */
.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-green);
    transition: width 0.3s;
}
.nav-links a:hover { color: var(--text-main); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; gap: 15px; }

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    display: inline-block;
    transition: transform 0.2s, opacity 0.2s;
}
.btn:hover { transform: translateY(-1px); opacity: 0.9; }

.btn-login { 
    color: var(--text-main); 
    border: 1px solid var(--accent-green);
    background: transparent;
}

.btn-primary { 
    background: var(--accent-green); 
    color: var(--text-on-accent); 
}

/* --- MOBILE MENU --- */
.hamburger { display: none; cursor: pointer; color: var(--text-main); font-size: 1.5rem; }

.mobile-menu {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%;
    height: 0; 
    background: rgba(var(--bg-dark-rgb), 0.98);
    backdrop-filter: blur(20px);
    overflow: hidden;
    display: flex; 
    flex-direction: column; 
    align-items: center;
    justify-content: center;
    gap: 30px;
    z-index: 1001; 
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active { height: 100vh; }

.mobile-menu a { font-size: 1.2rem; font-weight: 600; color: var(--text-main); }
.close-menu { position: absolute; top: 30px; right: 30px; font-size: 2rem; cursor: pointer; color: var(--text-dim); }

/* --- HERO --- */
.hero {
    text-align: center;
    padding: 160px 20px 60px; 
    background: radial-gradient(circle at top center, rgba(var(--green-rgb), 0.08) 0%, transparent 60%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
    color: var(--text-main);
}

.hero h1 span { color: var(--accent-green); }

.hero p {
    font-size: 1.1rem;
    color: var(--text-dim);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

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

/* --- STATS SECTION --- */
.stats-container {
    display: flex;
    justify-content: center;
    gap: 50px;
    padding: 40px 20px;
    border-bottom: 1px solid var(--border);
    max-width: 800px;
    margin: 0 auto 60px;
}

.stat-item { text-align: center; }
.stat-number { 
    font-size: 2rem; 
    font-weight: 800; 
    color: var(--text-main); 
    display: block; 
}
.stat-label { 
    color: var(--text-dim); 
    font-size: 0.85rem; 
    text-transform: uppercase; 
    letter-spacing: 1px; 
    margin-top: 5px;
}

/* --- METRICS --- */
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-main);
}
.section-subtitle {
    text-align: center;
    color: var(--text-dim);
    margin-bottom: 50px;
}

.metrics {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px 80px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: 12px;
    transition: transform 0.2s;
}
.metric-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-green);
}

.metric-icon {
    font-size: 1.8rem;
    margin-bottom: 20px;
    display: inline-block;
    padding: 12px;
    background: rgba(var(--green-rgb), 0.1);
    border-radius: 8px;
    color: var(--accent-green);
}

.metric-card h3 { margin-top: 0; color: var(--text-main); }
.metric-card p { color: var(--text-dim); line-height: 1.5; font-size: 0.95rem; }

/* --- FOOTER --- */
.footer {
    background: transparent; 
    border-top: 1px solid var(--border);
    padding: 40px 5%; 
    margin-top: auto; 
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-dim);
    font-weight: 500;
}
.footer a { color: var(--accent-green); font-weight: 600; }
.footer a:hover { opacity: 0.8; }

/* --- MOBILE RESPONSIVE --- */
@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }
    .hamburger { display: block; }
    .hero h1 { font-size: 1.8rem; }
    .hero-buttons { flex-direction: column; }

    .btn { width: 100%; text-align: center; box-sizing: border-box; }

    .mobile-menu .btn {
        width: 90%;       
        max-width: 350px; 
        margin: 0 auto;   
    }

    .stats-container { flex-direction: column; gap: 30px; }
}