/* Main */
main {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: 50px 20px;
}

.container-test {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.title-test {
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.test-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    text-align: left;
}

.form-group label {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 8px;
    display: block;
    font-weight: 500;
}

.dropdown {
    position: relative;
    width: 100%;
}

.dropdown-btn {
    width: 100%;
    padding: 12px 15px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.dropdown-btn:hover {
    background: #e0e0e0;
    border-color: #bbb;
}

.dropdown-btn::after {
    content: '▼';
    font-size: 0.8rem;
    color: #666;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    z-index: 10;
    max-height: 200px;
    overflow-y: auto;
}

.dropdown-content.show {
    display: block;
}

.option {
    padding: 12px 15px;
    font-size: 1rem;
    color: #333;
    cursor: pointer;
    transition: background 0.3s ease;
}

.option:hover {
    background: #f0f0f0;
}

.hidden {
    display: none;
}

.start-btn {
    padding: 15px;
    background: linear-gradient(135deg, #ff6200, #e05500);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease;
    margin-top: 20px;
}

.start-btn:hover {
    background: linear-gradient(135deg, #e05500, #ff6200);
    transform: translateY(-2px);
}

.start-btn:active {
    transform: translateY(0);
}