body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f8;
    color: #333;
}

/* --- HERO HEADER --- */
header {
    position: relative;
    background: linear-gradient(rgba(26,188,156,0.85), rgba(26,188,156,0.85)), url('https://images.unsplash.com/photo-1556761175-4b46a572b786?auto=format&fit=crop&w=1920&q=80') center/cover;
    color: white;
    text-align: center;
    padding: 100px 20px;
}

    header h1 {
        font-size: 3em;
        margin: 0;
    }

    header p {
        font-size: 1.3em;
        margin-top: 15px;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.5em;
    }

/* --- CTA BUTTONS --- */
.cta-buttons {
    margin-top: 35px;
}

    .cta-buttons a {
        background-color: white;
        color: #1abc9c;
        padding: 14px 32px;
        border-radius: 8px;
        text-decoration: none;
        font-weight: 600;
        margin: 10px;
        display: inline-block;
        transition: background 0.3s, color 0.3s, transform 0.2s;
    }

        .cta-buttons a:hover {
            background-color: #149174;
            color: white;
            transform: scale(1.05);
        }

        .cta-buttons a.login {
            background-color: #3498db;
            color: white;
        }

            .cta-buttons a.login:hover {
                background-color: #2b80b9;
            }

/* --- FEATURES --- */
.container {
    width: 90%;
    max-width: 1100px;
    margin: 60px auto;
}

    .container h2 {
        text-align: center;
        font-size: 2em;
        margin-bottom: 20px;
        color: #16a085;
    }

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.feature {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 25px;
    width: 280px;
    text-align: center;
    transition: transform 0.3s ease;
}

    .feature:hover {
        transform: translateY(-5px);
    }

    .feature h3 {
        color: #16a085;
        margin-bottom: 10px;
    }

/* --- FOOTER --- */
footer {
    text-align: center;
    background-color: #1abc9c;
    color: white;
    padding: 20px 0;
    margin-top: 60px;
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 900px) {
    header {
        padding: 80px 20px;
    }

        header h1 {
            font-size: 2.3em;
        }

        header p {
            font-size: 1.1em;
        }

    .cta-buttons a {
        padding: 12px 25px;
        font-size: 1em;
    }
}

@media (max-width: 600px) {
    header {
        padding: 70px 15px;
    }

        header h1 {
            font-size: 1.8em;
        }

        header p {
            font-size: 1em;
            width: 100%;
        }

    .cta-buttons {
        margin-top: 25px;
    }

        .cta-buttons a {
            display: block;
            margin: 10px auto;
            width: 80%;
            font-size: 1em;
        }

    .feature {
        width: 90%;
    }

    .container h2 {
        font-size: 1.6em;
    }
}