:root {
    --bg-dark-primary: #1a1d24;
    --bg-dark-secondary: #272c36;
    --text-light: #f0f0f0;
    --text-dark: #333;
    --border-color: #404756;
    --primary-color: #6a8dcf;
    --success-color: #81C784;
    --delete-color: #E57373;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-dark-primary);
    color: var(--text-light);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.2s;
}

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

.navbar {
    background: var(--bg-dark-secondary);
    padding: 1rem 2rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

    .nav-links a {
        font-weight: 500;
        font-size: 0.95rem;
        color: var(--text-light);
    }

.hero {
    padding: 5rem 2rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

    .hero h1 {
        font-size: 3rem;
        font-weight: 800;
        line-height: 1.2;
        background: linear-gradient(135deg, #fff 0%, var(--primary-color) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .hero p {
        font-size: 1.2rem;
        color: #aaa;
        max-width: 600px;
        margin-bottom: 1rem;
    }

.cta-buttons {
    display: flex;
    gap: 1rem;
}

button {
    padding: 0.9rem 2rem;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
}

    button.primary {
        background: var(--primary-color);
        color: #fff;
        box-shadow: 0 4px 15px rgba(106, 141, 207, 0.3);
    }

        button.primary:hover {
            background: #5a7bbf;
            transform: translateY(-2px);
        }

    button.secondary {
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-light);
    }

        button.secondary:hover {
            background: var(--bg-dark-secondary);
            border-color: var(--primary-color);
        }

.features {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-dark-secondary);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease;
}

    .card:hover {
        transform: translateY(-5px);
        border-color: var(--primary-color);
    }

.card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-light);
}

.card p {
    color: #aaa;
    font-size: 1rem;
}

.stats-section {
    background: var(--bg-dark-secondary);
    padding: 4rem 2rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.stats-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.stat-item h2 {
    font-size: 3rem;
    color: var(--success-color);
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #aaa;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

footer {
    margin-top: 5rem ;
    margin-bottom: 1rem;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    background: var(--bg-dark-primary);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .stats-grid {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }
}