body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #fafafa;
    color: #222;
    line-height: 1.6;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    padding: 15px 30px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

    header img {
        height: 40px;
    }

    header a {
        text-decoration: none;
        font-weight: bold;
        color: #2980b9;
    }

section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 20px;
}

h1, h2 {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5rem;
    color: #2c3e50;
}

h2 {
    font-size: 2rem;
    color: #27ae60;
}

p {
    text-align: center;
    font-size: 1.1rem;
}

.highlight {
    font-weight: bold;
    color: #e67e22;
}

details {
    margin: 20px auto;
    max-width: 800px;
    background: #fff;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

    details summary {
        cursor: pointer;
        font-weight: bold;
        color: #2980b9;
    }

.cta {
    text-align: center;
    margin-top: 40px;
}

    .cta button {
        background: #27ae60;
        color: white;
        padding: 12px 25px;
        font-size: 1rem;
        border: none;
        border-radius: 8px;
        margin: 8px;
        cursor: pointer;
        transition: background 0.3s ease;
    }

        .cta button:hover {
            background: #219150;
        }

/* Modal styling */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    width: 90%;
    box-shadow: 0 2px 15px rgba(0,0,0,0.3);
    position: relative;
    /* animation start state */
    opacity: 0;
    transform: translateY(-30px);
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    opacity: 1;
    transform: translateY(0);
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    font-weight: bold;
    color: #888;
    cursor: pointer;
}

form label {
    display: block;
    margin: 10px 0 5px;
    font-weight: bold;
}

form input, form textarea, form select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 1rem;
}

form button {
    background: #2980b9;
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
}

    form button:hover {
        background: #216495;
    }

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    width: 90%;
    position: relative;
    opacity: 0;
    transform: translateY(-30px);
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    opacity: 1;
    transform: translateY(0);
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    font-weight: bold;
    color: #888;
    cursor: pointer;
}